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Tuesday, November 02, 2010

Effluent Treatment Plant- Case Study Bone Rendering Plant

Dear Sayeed,
Thanx for the info. I hope you continue to send such valuable info which slips my eye
pls note following points please.
1. The process you sent is primary treatment which is to be followed by MBR or Constructed WETLAND which we have not provided anywhere yet.
In The primary Treatment,  we have not provided UASB.  And then the foaming problem is the biggest.We have not found a solution to the foaming problem yet.
in the flow chart :
2.Balance Tank :We have a balance tank and using lime there to balance pH. NaOH is already coming mixed with water, so no need to add additional NaOH
3. DAF Unit: we are already using Ferrous sulphate, sulphuric acid and PAC there (Polymer) in  DAF.  Dosing is yet to be optimised
4.Denitrification:It is done in UASB tank.UASB is missing in Ashrafi and is to be added.We can convert the existing collection tank after DAF into Anaerobic condition by closing the open Top..In Malhotra,we are going for UASB tanks.
5.Nitrification: It is done in the Aeration tank.We have found an anti foaming agent from Ion Exchange by the name INDOFOAM1500, let us try that.Silicone defoamer is not working.We have not found a solution to the foaming yet..We have not used phosphoric acid in the aeration tank.This is a new info.We will try concentrated phosphoric acid when we visit kanpur this time insha Allah.
6.Ultra filtration:In its place we are using Pressure Sand filter.
These primary treatment units are to be followed by a MBR unit or a  Constructed Wet lands unit .After this water can be reused.... ZERO Discharge.
Thanx again for sending such a beautiful article.
Saleem Asraf Syed Imdaadullah,
Mobile: +919899300371
ENVO PROJECTS
New Delhi, India
Web Site :
www.envoprojects.in
www.saleemindia.blogspot.com
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