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How to reduce COD & BOD in a treated water after ETP?

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Question ajoutée par JS Pathak
Date de publication: 2016/01/12
Ernst Edward Logronio
par Ernst Edward Logronio , Process Controller , Acciona Agua

We could use microbiological reaction (aerobic or anearobic reaction) to reduce COD.

Imtiyaz Sayed
par Imtiyaz Sayed , Engineer , Arabi Company WLL

In an Aeration tank dosing of UREA & DAP is done, effluent gets direct contact with air to dissolve oxygen in water, resulting in reduction of BOD & COD values upto 90%

jamil saidani
par jamil saidani , sous directeur , agence nationale de protection de l'environnement ANPE

to reduce DCO And DBO in solid material by prétraitement

 

 

Ago Nadarevic
par Ago Nadarevic , Water Treatment Engineer Specialist (Commissioning Manager) , John Cockerill

1. Remove O&G by DAF System etc. 2. Remove TSS to reduce loading COD/BOD before biological treatment by DAF, Clarifier etc.May be you need to adjust pH to meet optimum reaction with chemical flocculant and flocculent 3. Biological process to reduce COD/BOD 4. Post treatment (settling to separate TSS generate by biological process). 5. Post treatment biocide before effluent flow to drainage  6. Belt Press, Filter Press, Centrifuge etc. to treat sludge

Fawad Ahmad
par Fawad Ahmad , Assistant Manager Waste Water Treatment Plant , US Apparel & Textiles

Try multimedia filters. containing sand, gravel and Activated carbon. Your BOD and COD will come down to 10-15%.

Haythem Nasri
par Haythem Nasri , Protection de l'environnement , Ministry of Environment and Sustainable Development

By biological and chemcial process

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