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Showing posts with label water treatment. Show all posts
Showing posts with label water treatment. Show all posts

Tuesday, August 22, 2017

RO REJECT WATER TREATMENT

 RO REJECT WATER TREATMENT

1. Almost 30-45% water is rejected from an RO system. The increase in TDS percentage in reject water will be somewhere close to 33% higher than the input TDS. The reject water from an RO system is fed directly into a 2nd RO unit to reduce the quantity of reject water. The reject of the second RO is thermally evaporated or treated by root zone technology.
2. REUSE: Most reject water, with a TDS level of 1200 - 1500 PPM can be safely used for car washing, flushing toilets , gardening etc.
3. ROOT ZONE TECHNOLOGY: If there is land available, we can use this water selective plantation suitable for high TDS after pH correction. The reject water from RO is subjected to  root-zone technology applying sacrificial plants typha-reeds or cayhna-indica etc. Only plants can use the in organics. This is how Nature is designed. The remedied water can then be used for other grass/ greens/Irrigation.

4. Thermal Evaporation: Evaporation is a time-tested methodology for reducing the water portion of water-based waste. The evaporator converts the water portion of water-based waste to water vapor, while leaving the higher boiling contaminants behind. Thermal Evaporator heated by natural gas or other available heat sources like boiler steam can evaporate water to atmosphere very effectively. Multiple effect evaporators  are costly and energy guzzling.

5.RO reject water should never be added to ETP water or rain water harvesting system.

Thursday, May 12, 2016

THE COMPLETE GUIDE OF WATER TREATMENT IN SLIDE SHOW.Monroe L. Weber-Shirk S chool of Civil and Environmental Engineering Water Treatment

THE COMPLETE GUIDE OF WATER TREATMENT IN SLIDE SHOW.THE BEST I HAVE SEEN YET

Watch the slide show at the URL given
http://slideplayer.com/slide/5014325/#.Vx9hmpV99aw.facebook

Monroe L. Weber-Shirk S chool of Civil and Environmental Engineering Water Treatment 

Download "Monroe L. Weber-Shirk S chool of Civil and Environmental Engineering Water Treatment "

Sunday, November 22, 2015

Iron Removal filter for a house with Iron media like BIRM , GREEN SAND and MNO2



Know the signs to identify iron in water
Look for these signs around your home that can indicate iron in your water:
  • Dry, itchy skin
  • Dull hair
  • Worn, scratchy clothes
  • Lime scale or other build up around drains, faucets, and fixtures
  • Water that takes a lot of soap or time to lather
  • Rust-colored stains in sinks and tubs

LIMIT:Iron and Manganese < 0.3 ppm
Iron Water Treatment: The most common method of removing iron from borewell water is by using Manganese Greensand or BIRM.

Product Name: Iron Filter for a small house
Description :
FLOW::1000 LPH (Liter per Hour)
 VESSEL : FRP PENTAIR 
·        Filter Media: MnO2,Green sand , Birm Media, Activated Carbon, Anthracite,Treated Sand, Fine Sand, Gravels, and Sodium hypo Chloride (Filtering Media used as per the water test report, so,water test report compulsory)
·         Pipeline: Frontal 1” pipe with Multiport Valve for service, Backwashing & rinse etc.
·         
      Cost : Rs.19,500/= Per piece. Tax and transport extra.
      Maintenance Cost:The Iron Media will last 3 years minimum and the FRP vessel life is 20 years.
      Labour Cost: Minimum labour is required.
      
PLS CONTACT US AT saleemasraf@gmail.com , 09899300371
        
      For most residential situations, a 1000LPH is the maximum you should consider.Other capacities available are 2000 LPH, 3000LPH, 4000LPH and 5000 LPH.  

       ABOUT THE IRON REMOVAL MEDIA



          An iron problem is characterized by the red-brown staining of bathroom fixtures and laundry. In well water, iron usually occurs in its ferrous state. The water is clear when drawn but once exposed to air the iron changes into a ferric (oxidized) state. The water turns red and forms insoluble “rust” particles. Staining can be caused by as little as 0.3 milligrams per litre (mg/L).
industries like pulp and paper mills, tanneries, textile plants, dye houses and laundries, it is almost impossible to operate with iron or manganese bearing waters since they would produce objectionable stains, streaks, spots and off-colors on many manufactured products. Iron and manganese also foul ion exchange resins. Hence, it is necessary to include a pre treatment stage in most ion exchange processes. 
If the major problem in borewell water is iron, then the best solution is to go for either a Manganese Greensand or BIRM treatment of the well water.

BIRM is an efficient and economical method of removing dissolved iron and manganese compounds from raw water supplies.The physical characteristics of Birm provide an excellent filter media which is easily cleaned by backwashing to remove the precipitant. Birm is not consumed by iron removal and therefore offers a tremendous economic advantage over many other iron removal methods. Birm is not meant for removal of hydrogen sulfide or that "rotten egg" odor. A manganese green sand media,  is more suited for that task.



Advantages:
  • No chemicals to purchase for
    maintenance. Regeneration not
    required.
  • Iron removal efficiency is extremely high.
  • Works best at PH 6.8 or above.
  • Negligible labor cost: 
  • Durable material with a long life and wide temperature range.


Greensand is formulated from a glauconite greensand which is capable of removing iron, manganese and hydrogen sulfide from water through oxidation and filtration. Manganese and soluble iron are oxidized and precipitated by contact with higher oxides of manganese on the greensand granules. The hydrogen sulfied is eliminated by oxidation to sulfate and an insoluble precipitate. When the manganese greensand bed is saturated, it is regenerated with a weak potassium permanganate solution which is rinsed down the drain. The potassium permanganate is available locally at nearly all hardware and home improvement stores.You will need guidance to set the backwashing dosing of potassium permanganate, so contact some experienced person for it.


Advantages:

  • Iron reduction over wide pH range
  • Effective reduction of hydrogen sulfide in addition to iron and/or manganese
  • No harmful effects from a chlorine feed
  • Low attrition for long bed life

Manganese di oxide: It helps elimination of iron, hydrogen sulphide, and manganese from water supplies.


You will need to consult an expert in water treatment to decide on the best treatment for well water with high iron content.
Write to me with details to saleemasraf@gmail.com