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I HAVE SHARED ALL MY PRACTICAL WATER TREATMENT EXPERIENCES WITH SOLVED EXAMPLE HERE SO THAT ANYBODY CAN USE IT.

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Sunday, December 17, 2017

HOW TO START UP AND RUN A BIO GAS PLANT

HOW TO START UP AND RUN A BIO GAS PLANT

FOR MORE DETAILS
www.envoprojects.com     9899300371 98110004529



Monday, November 13, 2017

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 .
.

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.



IRON FILTER FOR TREATMENT OF WELL WATER FOR WHOLE HOUSE


IRON FILTER FOR TREATMENT OF WELL WATER FOR WHOLE HOUSE

Indication Cause Treatment
Water clear when drawn but red-brown or black particles appear as water stands; red-brown or black stains on fixtures or laundry

ENVO IRON FILTER:
We bring for the clients an encompassing range of Iron Removal Plant(IR Plant) which is widely used for Iron removal from water. The Iron Removal Plant (IR Plant) we offer is manufactured with high grade raw material. Our range of Iron Removal Plant (IR Plant) is offered at leading market prices consists of Domestic Iron Removal Plant, Iron Removal Plant for flat and apartments, Industrial Iron Removal ,FRP Iron Removal, MS Iron Removal.
Our specially designed Iron Removal Plant without Shallow Hand Pump can remove metals and chemical contamination. Our Iron Removal Plant without Shallow Hand Pump are provided with highly adsorptive filters to trap even the last trace of iron content in water and thereby rendering clean and healthy water.
Capacity :250 LPH   to 50,000 LPH
Usage:
1.    For community Purpose In rural areas
2.    For residence, housing, office building Purpose
3.    For school, collage, educational institutes Purpose
4.    For hotels, restaurants, resorts Purpose
5.    For hospitals, nursing homes and others medical institutes Purpose.
6.    For Municipality water supply, Corporation Purpose
7.    For Industrial purpose like paper mills, cotton mills, Poultry Firms, Chemical plant, Pharmaceutical purpose etc.
We also provide customized solutions for any sort of water related problems.
                     
    STANDARDS FOR POTABLE WATER :

Suspended Solids < 500 ppm
Turbidity < 10 ppm
B-Coli—NIL
M.P.N. – one number in 100 ml
Hardness <100 o:p="" ppm="">
Chloride<250 o:p="" ppm="">
Iron and Manganese < 0.3 ppm
PH= 6.5 to 8
Lead< 0.1 ppm
Arsenic< 0.05 ppm
Sulphate < 250 ppm
Carbonate Alkalinity < 120 ppm
Dissolved Oxygen = 5 to 6 ppm
B.O.D—NIL

Any parameter above the limits as mentioned above will require treatment

Treatment method: Chemical oxidation followed by filtration
Iron or manganese also can be oxidized from the dissolved to solid form by passing through oxidizing agent called MNO2.

 The resulting solid particles then must be filtered. When large concentrations of iron are present, a flushing sand filter may be needed for the filtering process.


Any filtration material requires frequent and regular backwashing or replacement to eliminate the solid iron/manganese particles. Some units have an automatic backwash cycle to handle this task. 


FLOW CHART :
 Well ---pump-----MNO2 Filter (BLUE COLOUR)---Anthracite filter (GREEN COLOUR)----Collection Tank---pumped to overhead tank of the house----supply to house.



FIRST FILTER: MNO2 FILTER

Filter Media – MNO2 Manganese di oxide

Iron and Manganese removal
Supplied in 25Kg bags
What it is and how it works
MNO2 is a oxidizing agent to precipitate iron and/or manganese. Because the presence of iron is most common, iron removal is the usual application for MNO2. Under suitable conditions, the iron and dissolved oxygen in water react on contact with the MNO2 filter bed and, as a result, the iron is precipitated in the form of hydroxide. This is a flocculent material which is filtered out in the bed of anthracite. Periodic backwashing flushes out the accumulated iron and the MNO2 is again ready to perform its function. MNO2 is not consumed in the iron removal operation.

SECOND FILTER:
SAND-ANTHRACITE FILTER FOR IRON REMOVAL
A sand-anthracite filter or dual media filter/multi-media filter is primarily used for the removal of turbidity and suspended solids as low as 10-20 microns. Inside a sand-anthracite filter is a layered bed of filter media. The bed is graded from bottom to top as follows:

1st layer
=
gravel support bed
2nd layer
=
2mm filter sand
3rd layer
=
fine filter sand
4th layer
=
anthracite
 How it works:
Anthracite has a high affinity for iron, especially when it is coated with potassium permanganate, and is therefore often employed for iron and manganese removal.
CONTACT FOR COSTS AND OTHER DETAILS: Saleem Asraf Syed Imdaadullah, 09899300371(Delhi)whatsapp
Rakib Hussain (Mobile: 9859171561,Guwahati.)

To design any iron filter we need the following two data
1.How much liter of water is to be treated in a day
2.Water test report mentioning Iron content.

WATER TESTING LAB AT GUWAHATI
Jalavikshan, +(91)-9864278211 , +(91)-9435045921 1st Floor,Techno Plaza Complex, M L Nehru Road, Panbazar, Guwahati - 781001, Near Pan Bazar Over Bridge

ASSAM TRIBUNE NEWS REPORT

Source of Article :http://www.assamtribune.com/scripts/detailsnew.asp?id=jan2916/at056


Groundwater contamination cases rising in State
Ajit Patowary
 GUWAHATI, Jan 28 - Cases of contamination of groundwater in the State are swelling up everyday, making groundwater unsafe for consumption. According to the official data, the number of the State’s districts which have got their groundwater contaminated by fluoride and arsenic has shot up to 22 and 21 respectively from 19 and 20 respectively in 2014-’15.
According to the data available with this newspaper, in 2014-’15, the arsenic affected districts of the State included Baksa, Barpeta, Bongaigaon, Cachar, Darrang, Dhemaji, Dhubri, Goalpara, Hailakandi, Jorhat, Kamrup, Karimganj, Kokrajhar, Lakhimpur, Morigaon, Nagaon, Nalbari, Sivasagar and Sonitpur.
This year, Tinsukia has also been found to be affected by arsenic, raising the number of affected districts to 21, said the sources.
Till 2013-’14, nine districts – Barpeta, Dhubri, Goalpara, Golaghat, Jorhat, Kamrup, Karbi Anglong, Karimganj and Nagaon – were found to be affected by fluoride.
But in 2014-’15, with the inclusion of Baksa, Cachar, Chirang, Darrang, Dibrugarh, Morigaon, Nalbari, Sivasagar, Sonitpur and Udalguri, the number of affected districts rose to 19.
In 2015-’16, with the inclusion of Bongaigaon, Lakhimpur and Tinsukia, the number of fluoride-affected districts have shot up to 22, sources said.
According to experts here, the trend of rise in the number of fluoride and arsenic affected districts should be studied, together with the impact of such contamination of groundwater, which is used by the people of many areas in these districts for the purpose of drinking as well as domestic use, on human and animal health.
Except in the two districts of Karbi Anglong and Nagaon, no comprehensive health impact studies of groundwater contamination in the rest of the districts has so far been known to have been conducted, said the experts. The origin of fluoride so far is known to be geogenic.


The State’s Department of Mining and Mineral may undertake such studies, involving also the Public Health Engineering Department (PHED), Council of Scientific and Industrial Research (CSIR), Central Ground Water Board (CGWB) and the North Eastern Regional Institute of Water and Land Management (NERIWALM) in this regard, said the experts