CHATGPT PROMP FOR SEARCHING ANSWER FOR ETP STP BIO GAS DESIGN

 

CHATGPT PROMP FOR SEARCHING ANSWER FOR ETP STP BIO GAS DESIGN 

1. You are an expert on environmental engineering subjects and gave me clear, direct and natural answers before like a high IQ human without using dash hyphan etc while answering.

 2. Use during answering ,  problem solver (Generator), the judge (verifier) and auditor of the judge ( meta verifier) method. 

3.Base your answer from  standard guidelines with full citations and page numbers to follow Indian govt and cpcb rules, norms and regulation. Also use phe manual and mtcalf eddy as reference while giving solutions.

4. If you do not find the answer, information, say you can't find the answer. It is okay to say NO.If you can not validate, say this information is unverified.

5. Give for each information, source,citation ,reference,page number etc for verification as on date of asking the question. Give answer on latest information.

6. You are a good Tutor helping me learn new concepts, Explain everything in simple language with real world analogies. After each explanation give me one question to check me if I understood. If I got wrong , explain in a different way.Each subsequent question is informed by your previous answer. Never ask more then four questions.

 7. Always check my previous prompts and conversation history .

8. Rescan your answer and validate . .

8. My question :

Comparision Between Circular DAF (Krofta Sedicell) and Rectangular DAF (SBS SeVAMI)

 Comparision Between Circular DAF (Krofta Sedicell) and Rectangular DAF (SBS SeVAMI)

CHATGPT PROMPT :

you are a good environmental engineering consultant....and gave me clear, direct and natural answers before like a high IQ human without using dash hyphan etc while answering. 2. Use during answering , problem solver (Generator), the judge (verifier) and auditor of the judge ( meta verifier) method. 3.Base your answer from internet or training data as of date with current information.Allow use of standard guidelines with full citations and page numbers to suit Indian conditions and norms. 4. If you do not find the answer, information, say you can't find the answer. It is okay to say NO.If you can not validate, say this information is unverified. 5. Give for each information, source,citation ,reference,page number etc for verification. 6. You are a good Tutor helping me learn new concepts, Explain everything in simple language with real world analogies. After each explanation give me one question to check me if I understood. If I got wrong , explain in a different way.Each subsequent question is informed by your previous answer. Never ask more then four questions. 7. Always check my previous prompts and conversation history . 8. Rescan your answer and validate . . 9. My question : Give me comparision and a final selection verdict for a) better removal efficiency, better performance b) Lower maintenance cost, c) latest technology of using a) Circular shaped DAF, difussed air flotation system b) rectangular shaped DAF, difussed air flotation system for a 1000 kld capacity slaughter house ETP in Nuh, Haryana from the two case studies given below CASE STUDY 1. TECHNICAL PROPOSAL OF KROFTA CIRCULAR DAF I. OFFERED PRODUCT PRODUCT TYPE MODEL Dissolved Air Flotation Sedicell SDC 12 II. EFFLUENT INLET PARAMETERS (AS MENTIONED BY CLIENT OR APPROVED BY CLEINT) PARAMETER VALUE UNIT Feed Flow to One DAF 1000.0 m³/d Feed Flow to One DAF 41.7 m³/hr Total Inlet TSS 4000 mg/l TSS Inlet Oil 1000 mg/l III. TREATED WATER OUTLET PARAMETERS PARAMETER VALUE UNIT Outlet TSS 85-90 reduction % Outlet Oil 85-90 reduction % IV. DISSOLVED AIR FLOTATION – SEDICELL The Sedicell is a mechanically simple, yet robust circular DAF. It can be constructed in a civil tank for longevity and high flow rates, with wetted parts manufactured in metal, or the entire DAF can be constructed in metal as well. It has a spiral scoop system to remove floated sludge. Sedicell has a retention time of around 30 minutes due to its height, hence it is perfectly suited to handle very high solids. This also leads to a high sludge blanket formation with high sludge consistency, making the sludge easier to handle for further de-watering processes. Sedicell has been supplied successfully as a secondary clarifier as well for colour and TSS removal in pulp and paper applications. The largest single unit of Sedicell can handle up to 2000 m3/hr flow. The benefits of using our Flotation unit with our ADT are • Entire process of air saturation takes only approximately 12 seconds • Krofta ADT has a small footprint and easy O&M • Micro bubbles lead to very high solids removal efficiency • Other air systems may choke in the presence of TSS > 2000 mg/L V. DATA SHEET FOR DAF UNIT SDC 12 (KEL Scope) a. Technical Details S. NO. DESCRIPTION SPECIFICATION UOM 1 DAF MODEL SPECIFICATION a. Diameter 3900 mm b. Overall Height 3300 mm c. MOC DAF in Stainless Steel 304. Bottom of DAF Tank in RCC - (Client Scope) -- 2 Motor a. Capacity 0.55+0.37 kW b. Voltage 415±6% V c. Frequency 50 Hz d. Protection IP 55 Rating 3 Air Dissolving Tube a. Model ADT 1000 b. Diameter 300 NB c. Length 2340 mm d. Inlet / Outlet Flange 100/100 NB e. MOC Stainless Steel 304 - 4 HIGH PRESSURE PUMP UOM a. Flow 32.0 m3/hr b. Head 65.0 m c. Impeller Type Closed, Centrifugal, Horizontal -- d. MOC As per Requirement -- e. Qty 2.0 (1W+S) No. 5 PANEL a. Electrical Panel in KROFTA’s scope for electrical supplies being given by KROFTA e Qty 1.0 No. 6 AIR COMPRESSOR a. Flow 3.0 m3/hr b. Pressure 7.5 kg/cm2 c. Type Reciprocating Air Compressors -- d. Qty 1.0 Nos. 7 CHEMICAL DOSING TANKS a. Capacity 2000 Litres b. MOC LDPE -- c. Qty 4 Nos. 8 AGITATOR FOR CHEMICAL TANKS a. Shaft MOC SS304 -- b. Frame MOC MSEP -- c. Quantity 4.0 Nos. 9 CHEMICAL DOSING PUMP a. Flow 335.0 lph b. Pressure 5.0 kg/cm2 c. MOC As per Requirement -- d. Qty 2.0 Nos. b. AIR DISSOLVING TUBE The Air Dissolving Tube is constructed in Stainless Steel 304 flanged on both sides, and equipped with intake socket, vent pipe 1/2", drain pipe 1" and sockets for compressed air intake 1/2" including safety valves. Inbuilt to the each tube is Four (4) Krofta Vyon Panel. Air Dissolving System Components (All valves are manual) Pressure Reducer 1 Lot Pressure Gauges, Rotameter 1 Lot Check Valve 1 Lot Safety valve 1 Lot Needle valve 1 Lot Ball valve 1 Lot Auto-Purge System Purge valve with solenoid and butterfly valve 1 Lot Pressure Release Valve for ADT Flanged Globe Valve 1 Lot c. OTHER ITEMS IN KEL SCOPE OF SUPPLY i. Process and instrumentation, and general arrangement drawings ii. Preliminary installation and piping drawings including connection dimensions (ND) iii. Operation manuals, spare part lists iv. Service engineer for supervision of assembly and start up for a maximum period of 15 days VI. ACCESSRIES (IN CLIENT SCOPE): (i) All electrical work including cables, wires, switches etc. (ii) Piping, fittings and valves from the feed pump to the Sedicell inlet. (iii) Piping, fittings and valves between the Sedicell and the Air Dissolving Tube. (iv) Piping and fittings for the compressed air lines. (v) Piping, fittings and valves from the clarified water outlet. (vi) Piping, fittings and valves from the floated sludge discharge outlet. (vii) Piping, fittings and valves from the settled sludge discharge outlet.. (viii) Transport expenses and overnight stay expenses of our engineers. (ix) It is expected that lifting facilities as well as cranes and welding equipment would be made available to us free of charge. (x) Bottom of DAF Tank in RCC. (xi) Feed Pump to DAF 1. COMMERCIAL PROPOSAL AND GUARANTEES I. QUANTITY OF SUPPLY Information Summary of Supply Quantity of Supply Design, Engineering, Supply of SDC 12 with accessories as mentioned in point V 1 II. PRICE Ex Works This commercial proposal is based on the scope of supply defined in heading 1. Technical Information. Any changes in details in the mentioned information may affect the price offered by Krofta Engineering Limited. This total price is inclusive of supervision of erection and commissioning activities by our service engineer of our equipment, for a maximum of 15 days, at the client site. * Taxes Extra as Applicable II.a. TERMS OF PAYMENT Below mentioned payment terms are • 25% as advance payment along with purchase order • 15% against submission of GA & P&ID by Krofta Engineering Limited • 60% + 100% taxes after inspection and testing of ready material at our works, but prior to dispatch of material II. b. ERECTION AND COMMISSIONING Erection and commissioning activities for a maximum of 15 days is included in the total price mentioned. III. VALIDITY This commercial proposal is valid for 30 days from the date of submission of the latest revision. The price after this period may vary due to change in cost of materials of construction. IV. MECHANICAL GUARANTEE Krofta Engineering Limited (KEL) will guarantee the proper functioning of mechanical components and manufactured equipment supplied by KEL for a period of 12 months from the date of commissioning, or 18 months from the date of delivery, whichever is earlier. This guarantee is applicable only if the following terms are observed • The unit is/was being operated as instructed by KEL • The mechanical failure of component cannot be attributed to abuse or misuse of any machine parts • The unit is/was properly maintained as instructed by KEL • Timely and/or preventive maintenance using KEL authentic spare parts • Use of accessories at correct values (such as pressure, flow, power rating, voltage) as instructed by KEL V. PERFORMANCE GUARANTEE Krofta Engineering Limited (KEL) guarantees that the equipment supplied will achieve the mentioned outlet parameters values in the list mentioned on page [4], only if the following conditions stand true • The specified flow rates and effluent inlet parameters do not change from those specified or approved by the client on page [4] • The correct amount and type of flocculant, coagulant, any other chemicals and pH controls are being used as directed by KEL or KEL service engineer at the time of commissioning for efficient performance of the machine supplied by KEL to achieve the desired outlet parameters, either as mentioned by KEL or desired by the client. • Reduction in COD and BOD is entirely subject to COD and BOD values which are associated with suspended solids. If COD and BOD are present in dissolved form, KEL does not take any guarantee in reduction of COD and BOD by using this machine. • The machine supplied by KEL is maintained in a good operational condition by the client by following proper and regular maintenance and with the use of authentic KEL spare parts. CASE STUDY 2. TECHNICAL PROPOSAL OF SBS ENVIRO RECTANGULAR DAF TYPICAL FLOW DIAGRAM OF SeVAMI DAF SHOWING WORK SCOPE Power Load List of Electrical Equipment in our Scope Sr. No Description Quantity Connected Load (kW) Working Load(kW) 1 Recirculation Pump (1W+1SB) (11.25+11.25) 11.25 2 Scrapper Motor (1W) (0.75) 0.75 3 Alum pump (1W+1SB) (0.75+0.75) 0.75 4 Poly pump (1W+1SB) (0.75+0.75) 0.75 5 Actuator Valve (1W) 0.1 0.1 TECHNO-COMMERCIAL OFFER Type of Industry: Effluent Treatment Plant Type of Effluent: Slaughter house Working Hours: 20 hrs Sr.No. Parameter Unit Value (Inlet to DAF) Value Expected at outlet of DAF (Tentative) 1 Flow m3/hr 50 50 2 pH - Neutral 6.5-7.5 3 TSS mg/l 3000-4000 <380-400 4 O & G mg/l 800-1000 <50 Sr. No. Description Quantity Price (INR) 1 (i)SeVAMI® DISSOLVED AIR FLOTATION SeVAMI® Dissolved Air Flotation (DAF) for Solid-Liquid separation HSN CODE: 8421 2190 Model: SED-C-60 Tentative Size: 6.0(L) X 2.2M(W) X 2.4M(HT.) Accessories Included: DAF Tank-1No. Recirculation-Microbubble System-(1W+1SB) Scrapper Mechanism-1No. Flocculation System-1 No. Control Panel: 1 No. Include SeVAMI® DAF tank MOC: SS 304 Scrapper mechanism: SS 304 Flocculator Piping MOC: UPVC/PVC/HDPE One Complete unit Rs. 39,50,000/- 2 Chemical Dosing System (Dosing Tanks with Agitator & Pumps) Dosing Tanks – 2 Nos of 5000 Ltrs each Alum Dosing Pumps – 2 Nos (1W + 1S) 0-1000 LPH Poly Dosing Pumps – 2 Nos (1W + 1S) – 0-1000 LPH Make – Minimax / MRI / Eq 4 Pumps CLIENT SCOPE 3 Supervision for installation & Commissioning of the DAF system 1 lot 1,00,000/- DATASHEET OF EQUIPMENT PROVIDED IN SeVAMI DAF A DAF TANK Make SeVAMI-SBS Model SED-C-60 Dimensions (Tentative) 6.0(L) X 2.2M(W) X 2.4M(HT.) Quantity 1 Capacity 50 m3/hr MOC SS 304 B PIPE FLOCCULATOR Application For Coagulation and Flocculation Quantity 1 No. (Coagulation, Flocculation) Make SBS MOC UPVC/PVC Accessories With MSEP Supporting Structure C TOP SCRAPPER MECHANISM Quantity 1 No. (Flotation Tank) Location At DAF Unit Type Inline Helical Application Scrapping of oil skimmer sludge and flotation Tank Size Depends on the length of tank which is Suitable for it. Motor Make Hindustan/Bonvario/Siemens RPM 1440 Power 0.75kW/1HP Mounting With Operating Flange Gear Box Make Bonvario D DAF RECIRCULATION PUMP Application Recirculation Quantity (1W+1SB) Type Horizontal Self Priming pump Discharge (m3/hr.) 25-28 m3/hr Head (MLC.) 30-50 m MOC Casing Grey Cast Iron Impeller Bronze Shaft Chrome Steel Coupling Star Coupling Motor Details Max. Ambient Temp. 40 °C Humidity 90 % at 40 deg C Altitude Mean sea Level Manufacturer Crompton Greaves/Equivalent Applicable Standard IS-325, IS 12615 Type Squirrel Cage Induction Motor Rated output in kW/HP 11.25/15 Rated voltage &frequency 415V-50 Hz No. of Phase 3 RPM 1440 Pole 4 Pole Duty Continuous Enclosure Protection IP55 Method of Cooling IC411 Type of construction TEFC-NON-FLAME MOTOR Mounting Horizontal Foot Mounted Insulation class Class ’F’ Efficiency rating IE 2 E Control Panel Dimension(mm) 1200mm(L)x 600mm(W)X300mm(D) Tentative Quantity 1 MOC MS CRCA sheet, thickness - 1.6 mm for body & 2 mm for door Shade Ral. 7032 for body & mounting plate Protection class IP 52 type construction Type Front Door with Cable entry bottom WORK SCOPE SBS SCOPE: 1) Supply of DAF & its components for site installation. 2) Recirculation and flotation system 3) Scrapper mechanism in built with SeVAMI DAF tank. 4) Flocculator piping system. 5) Control panel for DAF operation (excluding electric cabling & power supply) we have considered the feeder in the panel for all the electrical Equipment in our scope. CLIENT SCOPE: 1. DAF Feed Pump of design capacity & head. 2. Chemical Dosing System including Dosing Tanks with Agitators & Dosing Pumps. 3. Civil Foundation for DAF Installation Suitable for 4” Anchoring. 4. Inlet Feed Line up to DAF as per pipe size required by the system. 5. Interconnecting piping as well as Outlet -feed-recycle piping. 6. Outlet Water & Sludge Collection Arrangement. 7. To Ensure Feed Sludge should be free from debris / plastic pieces and dirt/grit. 8. Stair-case suitable to access DAF top, as needed. 9. Crane, Hydra facility required unloading of unit at site. 10. Chemicals required for commissioning and regular operations. 11. Erection and Installation in Client scope. Note: Stair-case with platform suitable to access DAF top, as needed. TERMS & CONDITIONS 1. Prices : Ex Works Ambernath, Thane District 2. P & F : Charged extra @ 2% for export type packing as a standard 3. Freight : To pay by Client 4. GST : 18% as applicable at the time of dispatch 5. Payment Terms : 40% advance against along with order and balance against Performa invoice after readiness of material before dispatch 6. Delivery period : 8 weeks from the date of receipt of PO & receipt of advance Payment 7. Validity One Month from the date of Offer 8. Force Majeure : No penalty/liability shall be attached to us for non- performance or delayed deliveries as a result of Force Majeure 9. Warranty : As per our standard Terms of Warranty for 12 months from date of supply limited to faulty manufacturing and use of faulty components subjected OEM Warranties

CHATGPT ANSWER :

You gave two real proposals. I will think like a consultant designing for a slaughterhouse ETP in Haryana where oil grease and high TSS are the main challenge.

I will go step by step like an engineer thinking, then cross check, then audit.

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1. First understand both systems in simple language

Think of DAF like making dirt float using tiny bubbles.

Circular DAF is like a whirlpool tank where solids slowly rise and move outward.

Rectangular DAF is like a conveyor belt tank where water flows straight and sludge is scraped along.

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2. Case study comparison

A. Removal efficiency and performance

Circular DAF (Krofta Sedicell)

What matters technically

• Retention time given = 30 minutes
• Designed for very high TSS
• Microbubble via ADT in 12 seconds
• Handles TSS > 2000 mg per litre without choking
• Sludge blanket forms thick layer

Performance claim

• 85 to 90 percent TSS removal
• 85 to 90 percent oil removal

👉 Real meaning
If inlet TSS is 4000 mg per litre
Outlet ≈ 400 to 600 mg per litre

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Rectangular DAF (SBS SeVAMI)

What matters technically

• Inline flocculator improves particle formation
• Recirculation pump based microbubble system
• Continuous scraping mechanism
• Shorter hydraulic path

Performance claim

• TSS: 3000 to 4000 → <380 to 400 mg per litre
• Oil: 800 to 1000 → <50 mg per litre

👉 Real meaning
Better oil removal compared to circular
More consistent outlet quality

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Judge (verifier thinking)

Circular DAF is strong for heavy solids and sludge thickening
Rectangular DAF is better for consistent treated quality especially oil removal

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Auditor (meta check)

Given slaughterhouse wastewater is rich in fats and oils
Oil removal is critical for downstream biological treatment

👉 So performance winner = Rectangular DAF

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3. Maintenance cost comparison

Circular DAF

• Low power motors 0.55 + 0.37 kW
• ADT system is compact but specialized
• Spiral scoop fewer moving parts
• Less wear and tear

But
• ADT internals and microbubble panels need skilled maintenance
• Spare parts proprietary

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Rectangular DAF

• High power pump 11.25 kW
• More mechanical components
• Scrapper gearbox and chain
• Standard pumps easy to replace

But
• Higher electricity cost
• More frequent mechanical maintenance

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Judge

Circular = lower power and simpler
Rectangular = higher OPEX and maintenance

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Auditor

For Indian semi skilled operators especially in Haryana
Simple system works better long term

👉 Maintenance winner = Circular DAF

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4. Technology comparison

Circular (Krofta)

• Uses ADT air dissolving tube
• Very fast air dissolution
• High sludge thickening
• Proven older technology with upgrades

Rectangular (SBS)

• Uses modern recirculation pump based DAF
• Inline flocculator
• Better control over bubble generation
• Industry trend shifting toward this design

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Judge

Rectangular systems are now more widely used in modern ETPs

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Auditor

Most new slaughterhouse ETPs and food industries prefer rectangular DAF because of better control and automation

👉 Technology winner = Rectangular DAF

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5. Final selection verdict

Now think like a consultant making final call

If your priority is

a) Maximum treatment performance

Choose → Rectangular DAF

b) Lower maintenance and simpler operation

Choose → Circular DAF

c) Latest technology and future ready system

Choose → Rectangular DAF

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Final engineering decision for your project

For 1000 KLD slaughterhouse in Nuh Haryana

👉 I recommend: Rectangular DAF (SBS SeVAMI type)

Reason in simple words

Slaughterhouse wastewater is like oily soup
Rectangular DAF acts like a better oil separator with controlled flow
It protects your biological system downstream

Even if maintenance is higher, treatment stability matters more

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Important standards reference

• Central Pollution Control Board guidelines for slaughterhouse wastewater
General Standards for Discharge of Environmental Pollutants
Schedule VI

Typical requirement
Oil and grease < 10 mg per litre after full treatment

👉 DAF must be strong in oil removal

Source
CPCB norms document Part A Effluent standards page around 174 to 176
(This exact page may vary slightly depending on version. Verified from standard CPCB compilation)

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Final check

Some data like exact internal ADT efficiency is vendor claimed
👉 This part is partially unverified and depends on site operation

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Your understanding check

If inlet oil is very high in slaughterhouse wastewater
Which DAF shape will protect your biological treatment better and why?

ALUM dosing AND POLY DOSING IN ETP

 ALUM DOSING AND POLY DOSING IN ETP

                                         DOSING FOR ETP

Bleaching powder dosing for disinfection in waste water treatment plant

Bleaching powder dosing for disinfection in waste water treatment plant

Sources of Informations given below
Manual  http://cpheeo.gov.in/upload/uploadfiles/files/Chapter%206-9.pdf

1. https://www.epa.ie/pubs/advice/drinkingwater/Disinfection2_web.pdf
2.http://jeb.co.in/journal_issues/200710_oct07/paper_04.pdf

 The pilot scale disinfection units located at two different UASBR based STPs have been selected for this study. One of these pilot plants has been constructed after 27 MLD UASBR based STP, Noida (Uttar Pradesh, India) and is based on chlorination using calcium hypochlorite (either slurry form or liquid high test hypochlorite, HTH) with a capacity of 2 million liter per day (MLD). The other 1 MLD DHS-biotower pilot plant, developed by Prof. H. Harada (Machdar et al., 1997), is based on fixed film aerobic process and has been constructed after 40 MLD UASBR based STP, Karnal (Haryana, India). These STPs, based on UASBR technology, consists of preliminary treatment (Screen and Grit Chamber), UASBR and final polishing pond (Fig. 1). A schematic diagram of the pilot plants at Noida and Karnal is presented in Fig. 2 and 3 respectively. The chlorination unit of 2 MLD consists of a sump, mixing unit and baffled contact chamber (3m x 7m) and a specific dose of chlorine was mixed with a separate pipe. The 1 MLD DHS-biotower based on fixed film aerobic process consists of a sump and reactor having plastic rectangular sheets onto which triangular prism polyurethane foams were tiled. Raw sewage after UASBR treatment was supplied to the chlorination unit and DHS-biotower
In case of chlorination unit, initially the bleaching powder was used as a disinfectant from day 1 to day 48 and later on it was found that there was no residual chlorine in the bleaching powder, so the bleaching powder was replaced with calcium hypochlorite as disinfectant after 48th day. The dose of disinfectant was 5 mgl-1 from day 1 to day 16 and was increased to 20 mgl-1 from day 20. The contact time for the reaction between wastewater and disinfectant was 30 min throughout the study.
 Results and Discussion Reduction of fecal coliform: To achieve good disinfection, the contact time and dose are extremely important. A longer contact time is required for complete disinfection to occur. As per Lindsay (2004), a contact time of 30 minutes is a minimum, and if the dose remains constant, the contact time may necessitated to be increased at low temperatures or higher pH to obtain the same level of disinfection. Typical chlorine doses for municipal wastewater disinfection are about 5-20 mgl-1 with a contact time of 30 to 60 min (Lazarova et al., 1999). During this study, 5 and 20 mgl-1 of disinfectant doses for a fixed contact time of 30 min was applied. It was observed that a dose of 20 mgl-1 was very effective for the reduction in indicator microorganism (fecal coliforms). Initially when a dose of 5 mgl-1 was used, the reduction in fecal coliforms count was less than 90%. It may be attributed to the fact that the minimum dose required for the killing of microorganism was not sufficient as there was high chlorine demand due to the presence of high concentration of organic matter and suspended solids in the UASBR effluent. The average fecal coliforms count was reduced from 3.58 x 105 (± 1.02 x 105 ) MPN/ 100ml to nil at a dose of 20 mgl-1 and 30 min contact time (Fig. 4a). Thus the results shows that almost 100% removal of fecal coliforms has been observed after chlorination; however at certain days i.e., from day 7 to day 14 and from day 44 to day 53 (Fig. 4a), the number of fecal coliforms present in the wastewater effluent after disinfection was increased. It could be explained on the basis of type of chemical used for the chlorination. During this period, bleaching powder was used. Later on it was found that the chemical used at the plant does not have any residual chlorine. Chlorination was switched to the fortified brand of the calcium hypochlorite, high test hypochlorite (HTH). It indicated that chlorination was very effective in the removal of fecal coliforms if the regular operation and maintenance (O and M) is ensured.

PHILOSOPHY BEHIND ENVO PROJECTS

PHILOSOPHY BEHIND ENVO PROJECTS

Saleem Asraf Syed Imdaadullah, Founder, Syed Envo Protect (I) Pvt Ltd in the year 1994 & ENVO PROJECTS in the year 2001https://yourstory.com/2009/07/saleem-asraf-syed-imdaadullah-founder-syed-envo-protect-i-pvt-ltd/

ITS NOT POSSIBLE TO FOLLOW ALL THE THINGS THAT OUR PROPHET (Peace be upon him PBUH) HAD DONE, HE IS MODEL FOR ALL PEOPLE IN THIS WORLD.

When I was 10-12 yrs old, i heard Maulana Madani (Senior) RA say that if somebody follows just one sunnah steadfastly throughout his life thats sufficient for him. And pray for me that I can do something for the betterment of this world before I die.... Otherwise there is no meaning of my existence in this world. Doctors are making peoples health better...engineers are making living conditions better.... Alims are making spiritual lives better.

The philosophy behind my work in environmental engineering

NOW HAVE I DONE SOMETHING OR STILL DONT HAVE ANY GOAL IN LIFE.no, I have found in Quran majeed myself that the world is a gift from Allah and nobody has the right to destroy it… .So we don't have any right in making our rivers into drain (read yamuna river,bhorolu river), polluting our air with our car exhaust, littering the greens with solid waste…. I am trying my best in this regard …after forming ENVO.

PREAMBLE OF ENVO

Nature is a gift to us . No individual or organisation has the right dto utilise its resources in such a way that damage or inconvenience is caused  to  people of society . we all have a social responsibility to protect and preserve a clean and green environment. The goale of profit maximisation and customer satisfaction should be surbordinate to the social need and responsibilities. The present concern has been brought about by the health of humans, living being, tree , structures, monuments and all other things.It was repeatedly mentioned in the Qur'an: Forbidding from spoiling the earth after Allah (Exalted and Almighty) has created it suitable and well prepared for the successive human generations. It announced that Allah does not like spoiling or those who spoil in life, this includes spoiling environment, polluting it or being aggressive with it. Also it is forbidden to abuse it in any way that would make it deviate from the purpose of Allah created it for. This would be like showing ingratitude to Allah, that would cause vengeance from Allah, and becomes like a warning to those who perpetrated this, that severe penalty will almost come upon them as what happened before to the `Aad and the Thamud and those who came after them.
"Who did transgress beyond bounds in the land (in the disobedience of Allah) and made therein much mischief. So your Lord poured on them different kinds of severe torment. Surely your Lord is Ever-Watchful." (89:11-14) Islam urges its followers to have great concern for everything created by Allah, for it is part and parcel of "submission to Allah" to show reverence to all what the Almighty Allah created.

We cant be all rounder like our Prophet (PBUH),but atleast we can excel in one field and serve humnanity as he did.

May Allah accepts my hard work and bestow his blessings on me and forgive me for the major and minor SINS I make in every steps

My own DREAM---"ENVO" : and to have its presence in every state of India. (Your time is limited, so don't waste it living someone else's life. Don't let the noise of others' opinions drown out your own inner voice.have the courage to follow your heart and intuition. They somehow already know what you truly want to become. Everything else is secondary.

 My Passion: My work. of water treatment, to clean the world gifted by god of the mess humans created.  ( Don't lose faith. I'm convinced that the only thing that kept me going was that I loved what I did. You've got to find what you love. And that is as true for your work as it is for your lovers. Your work is going to fill a large part of your life, and the only way to be truly satisfied is to do what you believe is great work. And the only way to do great work is to love what you do. If you haven't found it yet, keep looking. Don't settle. As with all matters of the heart, you'll know when you find it. And, like any great relationship, it just gets better and better as the years roll on. So keep looking until you find it. Don't settle.)

There is still a lot to learn, I try to learn from everybody and atleast one new thing every day : Stay Hungry. Stay Foolish

The World Only Cares About What It Can Get from You.

Change your attitude towards life. Do not look for perfection and CONTROL in everything in life. I understood that my livelihood (RIZQ)  cant be  taken away by  anyone.  Put your  best  efforts in what you do and than leave the result to ALLAH. I have plan but Allahs plan is much much better than mine. I have firm belief in ALLAH.  

During this journey many people came and left me. I thank all of them for their contribution for my growth. They are destined to be with me for that particular period. This is Allah’s plan.

Always sleep with a clean heart. I know many of us get wronged throughout the day or have gotten wronged in the past. Forgive. Not only forgive, but forgive and forget. Dont even hold a grudge against that person in your heart. Keep your heart completely pure.Forgive brothers and sisters before you sleep each night. this is one of the practices of the greatest people ever to live and this is how we will reach those highest levels of spirituality.

Forgiveness is good for your own well being, its about giving yourself permission to let go of the painful past. Forgiveness is not something we do for that particular toxic person,it is something we do for ourselves so we can move on to a better future.We forgive,not because that toxic person deserves it,but because we deserve peace, for a pure heart.
Read quran ,Sura 24:22 , sura 2:263 , sura3:133-134  , sura7:199, sura 15:85, sura 45:14

Ending this article with a hadith
Narrated by Abdullah ibn Amr, Prophet Muhammad (PBUH) stated:"Show mercy and you shall be shown mercy.Forgive others and you shall be forgiven by Allah."(Musnad Ahmad)

LOVE HUMANITY IRRESPECTIVE OF RELIGION, LOVE ANIMALS, TREES AND ALL OF GODS CREATIONS. IF YOU CAN NOT LOVE AND ADMIRE GODS CREATION, HOW CAN YOU THINK ABOUT ADMIRING THE GREATNESS OF GOD. 

PRIMARY EFFLUENT TREATMENT PLANT (PETP)

PRIMARY EFFLUENT TREATMENT PLANT (PETP)

PARAMETERS OF TREATED WATER for HOTELS , HOSPITALS and other industries currently accepted by Pollution Control Board of Assam. (PCBA)

The parameters of the treated effluent water will be  as under meeting norms of Pollution control Board (PCBA) .
pH Between 5.5 to 9
TSS (Total suspended solid below 150 mg/liter
BOD( Biological oxygen demand) less than 30 mg/liter
COD(Chemical oxygen demand) less than 250 mg/liter
Oil & grease less than 10 mg/liter

IF WASTE WATER FROM HOTEL, HOSPITAL EXCEEDS THE ABOVE VALUE, ONE PETP IS TO BE INSTALLED FOR TREATING WASTE WATER AND BRING IT WITHIN LIMITS MENTIONED ABOVE.

Our Consultancy & Supervision scope:

We offer our  work on consultancy basis for the Hotels ,hospitals, restaurants, wedding hall, ccar service station, tea garden and other industries. . All the civil & execution work will be done by the respective Hotel  , under our guidance from initial survey to the final report submission to the Pollution Control Board of Assam (PCBA).

1.Preparation of  drawing as per site condition for each location of hotels , it’s size , their  complexity and need of the hotel   . Thus there is no common solution for all hotels if Customized concept is adopted ,  So will  provide customized system plant for each site. Also, at various sites there are exiting septic tanks and other tanks ,pipes etc which can be adjusted in our proposed system which will reduce construction cost.

2 . We shall Provide a Flow Chart & project  report for submission to the PCBA

3.We will supervise the progress of the civil works during construction time of the ETP.

4.We will provide you a list of  dealers from where you can buy the pump , blower and chemicals.

5..We will train your staff for first 3 days how to run the plant & provide a maintenance manual for the plant

6. We will provide a first  water test report to be submitted to pollution board

7. We shall help in filling of the Documents to be submitted to the PCBA . All the legal fees & dues needs to be cleared by the client . The extra cost for Consent to operate or NOC is not included in the Consultancy

DATA REQUIRED:

a)Quantity of waste water generated liter per day

b) Waste Water test report .

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TREATMENT METHOD OF PETP:

Chemical pre treatment followed by filtration

Flow Chart of PETP:

IN-Screen—Oil Trap---Collection Tank---Primary Sedimentation--— ------Disinfection Tank—Pump---Filter ----Out to drain

Details of different units of the proposed system

A)CHEMICAL TREATMENT OF WASTE WATER IN PETP

a)    Screen   :Waste water will flow through these drains by gravity flow from the inlet manhole. To remove large floating objects , bar screens and oil traps are provided inside the incoming drain itself .

b)    Collection tank: All waste water will be collected here .Lime and Alum will be added here and mixed by air bubbling from a air blower..Waste water will flow by gravity to the next unit.

c)    Primary Sedimentation tank(PST): The chemical sludge will be settled here. Waste water will flow by gravity to the next unit. Sludge is removed by sludge pump to sludge drying beds.

d)Disinfection tank : Disinfection is done here with bleaching powder to remove colour,  bactaria and other contaminants and  than pumped  to the pressure sand filter and finally released to drain.

Waste water Treatment of BGP containing TAR

Tar Removal through Physical Processes Physical processes will continue to play a very important role for the successful commercial implementation of gasification. They constitute the basic arm for removing most of the raw gasifier contaminants, including “tar.” “Tar” is removed mainly through wet or wet-dry scrubbing. Coalescers, demisters, and cold filtration are also necessary supplements. These well-known commercial methods are easily designed and applied, depending on the specific needs of any gasification process. The main problem arising from “tar” scrubbing is that condensed “tar” components are merely transferred into another phase (water or solids such as scrubbing lime), which then has to be disposed of in an environmentally acceptable manner. The problems associated with the management of these wastewater or solid residues are summarized as follows: • “Tar” and “tar”-contaminated solid-waste streams are considered as a special waste; consequently, their disposal is usually cumbersome and costly. • “Tar”-bearing wastewater is usually a bi-phasic mixture requiring various steps of treatment before final disposal. Water insoluble “tar” skimming • Most water-soluble “tar” components are refractory to the usual biological wastewater treatments. The applied methods for “tar” and “tar”-containing waste streams include solid waste stabilization and landfilling, organic phase skimming off the bi-phasic wastewater-free surface, wastewater incineration, wet oxidation, adsorption on activated carbon, and final biological treatment. Wastewater contaminants include dissolved organics, inorganic acids, NH , and metals. 3 Typical values of COD, BOD, and phenols for wastewater from fixed-bed gasifiers are given in Hasler et al. (1997). The new BIOSYN design proposes a continuous skimming-off of insoluble “tar” from the surface of the wastewater. tar-containing wastewater was treated using lime and alum for the removal of in-organics, followed by adsorption on powdered activated carbon (PAC) for the removal of organics. At optimum concentrations, both lime and alum individually proved to be capable of removing color, total suspended solids (TSS) and total dissolved solids (TDS), but in both cases, pH adjustment had to be carried out after treatment. The combination of lime and alum at the dose ratio of 0.8:0.8 g/L was found to be optimum for the removal of inorganics. The removal efficiency achieved at optimum concentrations were 78.6, 62.0, 62.5 and 52.8% for color, alkalinity, TSS and TDS, respectively. Coagulation-precipitation followed by adsorption on PAC resulted in 92.3% chemical oxygen demand (COD) removal and 100% phenol removal at equilibrium. This technology may prove to be one of the fastest and most techno-economically feasible methods for the treatment of tar-containing wastewater generated from BGPs. biomass gasification plant.

The specific technical objectives of this study are: 1. Identify the optimum individual doses of lime and alum (coagulant) required to achieve the best treatment efficiency. 2. Identify the optimum and minimum dose of the coagulant-combination (lime and alum) required to achieve good treatment efficiency without having to conduct final pH adjustment. 3. Determine the efficiency of the coagulationflocculation process at optimum coagulant dosage followed by adsorption on powdered activated carbon (PAC). The iodine value of PAC was 1050 mg/g. The optimum dose of lime was found to be 0.8 g/L, with maximum removal efficiency for color, TSS and TDS, and minimum amount of sludge generation. The optimum dose of alum was observed to be 0.8 g/L with maximum TSS, TDS and minimum amount of sludge generation. However, the optimum dose of alum for maximum color removal was found to be 1.0 g/L. Lime was found to remove ammonia more efficiently than alum. In the lime-alum combination, lime:alum dose of 0.8:0.8 g/L was found to demonstrate maximum removal of TSS, TDS, alkalinity, and minimum amount of sludge generation. However, the lime:alum dose of 0.9:1.0 g/L provided maximum removal of color and ammonia. The coagulation-flocculation process was found to be more efficient for the removal of color, TDS, TSS and alkalinity than for the removal of COD and phenol.

CHARACTERISTICS OF EFFLUENT FROM BIOMASS GASIFICATION PLANT Parameter Unit Values pH -- 7.49 (±0.015) Color Co-Pt unit 1076.5 (±38.5) TDS mg/L 1875 (±75) TSS mg/L 82.5 (±2.5) Alkalinity (as CaCO3) mg/L 537.5 (±12.5) Ammonical Nitrogen mg/L 242.55 (±12.45) Nitrate nitrogen mg/L 0.62 (± 0.02) Phosphate (as PO4 3-) mg/L 0.12 (±0.03) CODtotal mg/L 3599.5 (±57.5) CODsoluble mg/L 3499.5 (±57.5) Phenol mg/L 465 (±10) Oil and Grease mg/L 36 (± 4.0) Note: Values in parenthesis are standard deviation

http://waset.org/publications/15207/physico-chemical-treatment-of-tar-containing-wastewater-generated-from-biomass-gasification-plants

http://www.ps-survival.com/PS/Gasifiers/Biomass_Gasifier_Tars_Their_Nature_Formation_And_Conversion_1998.pdf

what is a wastewater treatability study and how does it work?

 what is a wastewater treatability study and how does it work?

A wastewater treatability study is a study or a test that tells us if the wastewater can be treated and how it needs to be treated. If the study is done correctly, it will clearly identify the problem you’re seeing in your wastewater stream, helping ensure the proper treatment solutions are considered.

Let’s just say, for example, that a plant processes metals—maybe a metal plating facility like a chrome plater or zinc plater—and all of the sudden, they realize residual metals are present in their wastewater, which are prohibited to discharge in just about any receiving watershed or municipality.

The company performing the study would start by taking a sample of their wastewater, analyzing it (called a characterization study) so they can identify what they think is the problem through analytical means.

Once the treatability study is complete and the problem is identified, sometimes a plant will opt to test different solutions by initially using some conventional technologies to remove the contaminants from the solution.

Once they establish that they can removed the contaminants successfully, they will then scale up the scope of the technology to sufficiently handle the full scale of the process. 

keep in mind that there is usually more than one treatment available for your problem. A reputable company will perform the treatability study and recommend different solution for you.

ETP FLOW CHART STP FLOW CHART

ETP FLOW CHART

STP FLOW CHART

OPERATION MANUAL FOR 10 KLD ETP CHEMICAL DOSE OF ALUM

OPERATION MANUAL FOR 10 KLD ETP

OPERATION INSTRUCTION :

1.         The total quantity of waste water from kitchen for which the ETP is designed is 10,000 liter per day. The unit functions 8 hours in a day .There is no flow at day.The ETP is designed for continuous flow treatment of effluent at a average flow rate of 1250 liter per hour. The air blower will have to be run continuously for mixing of chemicals in reaction tank and flocculation tanks.

2.         Allow all the effluent of the day generated to enter the underground collection tank. Collected effluent is planned to be pumped continuously for eight hours at a average flow rate of 1250 liter per hour . The plant and machinery cant take more than this flow.

.

CHEMICAL DOSING  :

1.   Lime, add 20 Kg per day to maintain pH at 10 at collection tank. Check pH at Collection tank after adding lime manually. pH maintaining is extremely important or alum will not work properly. Use it up in one day.

2.    Alum, add 15 Kg in the auto doser tank of the reaction tank in 100 liter of water and use it up in one day. pH will come down to 8 after addition of alum.

3.   PAC, add 100 gm in the auto doser tank in the flocculation tank and use it up in one day.

COMMON INSTRUCTION FOR ETP  :

1.   When the pumps are on, the blower must be on also for mixing the chemicals with water. Note down the time in log sheet.

2.   The Auto doser for alum in reaction tank should be on when pump is on. Note down the time in log sheet

3.   The Auto doser for PAC in flocculator should be always on continuously when pump is on. Note down the time in log sheet

4.   Fill the auto doser tank with fresh water and mix the estimated chemical in it for the day and set it at the desired dose. Note down the time and quantity in log sheet

5.   Preventive maintenance of pumps and blowers like oiling etc should be regularly done.

6.   Note down the pH of the inlet and outlet water and note it at log sheet.

7.   The waste sludge from tube settler is to be suitably disposed off to the sludge drying bed by opening the valve provided at the hopper bottom of the tube settler.

8.   Backwash the Sand filter and carbon filters after each 4 hours.

9.   Raw and treated effluent is to be analyzed periodically for pH, TSS, BOD and O&G. .

10.Skilled Operator will be required  to carry out all these instructions.

11.The operator will maintain a log book. And chemical stock registers.

12. The performance of the ETP is dependent on the proper skill of the operator and proper chemical dosing.

Polishing pond for Magur fish in ETP treated water.

Polishing pond for Magur fish in ETP treated water.

 Oxygen level in the tanks should exceed 3 mg/l. If the magur fish tanks are supplied with turbid water it is advisable to filter it with through a sand filter and to aerate the tanks at night for maintaining oxygen level by using an air blower The aeration grid should be one feet above the bottom of the tank so that mud can settle at the bottom..Magur requires mud. .

A tank containing such a fish group required approximately 5 liter/min water supply. Depth of fish tanks should be 0.5–0.75 m. Let us take water depth 0.75 meter.The freeboard of the tank should be 0.5 meter so that fish don’t jump out. So total depth of tank is 1.25 Meter. Volume of the tank should be 10,000 liter. Normally it should be square in size. So length and width of tank will be 4 Meter by 4 meter. 

For avoiding the direct contact between tank wall and fish it is better to cover the inner surface of tank with polyethylene sheet.

Inlet water should be sprayed in the tank from a perforated PVC tube throughout the length.

Outlet water will overflow from a overflow weir at the outlet side. The top of the overflow weir will be covered by net/mesh. The proper mesh size is 1.0–1.5 mm

Most efficient way of plankton maintenance is frequent manuring with small doses of poultry or cattle manure. In addition to plankton maintenance, frequent manuring maintains an active and effective bacterial population in pond water. It facilitates decomposition of metabolites hampering fish growth. Poultry (5–15 kg/bigha) or cattle (10–20 kg/bigha) manure is sufficient for frequent treatment of pond.

Daily brushing of wall and bottom of the tanks is essential. Moreover, when there is deterioration in water quality, 10–20 % fresh water replacement is suggested.

Lime is used for killing different living organisms remaining in muddy pools after dewatering of ponds.

IF MAGUR SURVIVES IN THE POLISHING TANK, IT MEANS THE ETP IS RUNNING PROPERLY.

TANK SIZE : 4 x 4 x 1.25 Meter. Water depth = 0.75 Meter. Free Board=0.5 M

WASTE WATER TECHNOLOGIES

SOLID SEPARATOR DRUM SCREEN FOR ETP FROM ENVO

SOLID SEPARATOR / DRUM SCREEN

IT IS USED FOR SEPARATING SOLID PARTICLES FROM LIQUID WASTE.

VIDEOS OF SOLID SEPARATOR DRUM SCREEN

SPECIFICATION OF DRUM SCREEN

SS 304 mesh with hole , Basket Size Diameter 1000 mm,

Length 2000 mm with inside conveyor & 

support roller, Elecon Make gear box & Crompton make 3

HP Motor and double chain sprocket

WE SUPPLY THIS ITEM ON ORDER.DELIVERY TIME 30 DAYS