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Nutrients removal from municipal wastewater by chemical precipitation in a moving bed biofilm reactor

Paper ID Volume ID Publish Year Pages File Format Full-Text
36609 45138 2006 5 PDF Available
Title
Nutrients removal from municipal wastewater by chemical precipitation in a moving bed biofilm reactor
Abstract

In this study, a combined chemical precipitation and moving bed biofilm system was used to treat municipal wastewater. The moving bed biofilm reactor (MBBR) has been tested for nitrogen removal through simultaneous nitrification and denitrification (SND). The SND could be successfully established at DO of about 2 mg/l, and about 89.9% of total nitrogen (TN) removal efficiency through SND had been achieved in the system. Iron(II) sulphate heptahydrate solution was dosed onto the top of MBBR at varying ratios of total phosphorus to iron(II). The performance of the system with respect to BOD, COD, TN removal was not significantly affected by chemical dosing. The phosphorus removal efficiency increased with increasing dose. To meet EC requirements, the most favourable chemical dosing ratio was 1:1.3 (weight ratio P:Fe). The combination of highly efficient nitrogen removal, obtainable in a MBBR and effective phosphorus removal by chemical precipitation with iron(II) should be an ideal option for the total nutrient removal from municipal wastewater.

Keywords
Nutrient removal; Chemical coagulation; Wastewater; Nitrification; Denitrification; Moving bed biofilm reactor
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 41, Issue 4, April 2006, Pages 824–828
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us