fulltext.study @t Gmail

Effect of influent COD/N ratio on biological nitrogen removal (BNR) from high-strength ammonium industrial wastewater

Paper ID Volume ID Publish Year Pages File Format Full-Text
36738 45146 2004 7 PDF Available
Title
Effect of influent COD/N ratio on biological nitrogen removal (BNR) from high-strength ammonium industrial wastewater
Abstract

The effect of influent COD/N ratio on biological nitrogen removal (BNR) from high-strength ammonium industrial wastewater was investigated. Experiments were conducted in a modified Ludzack–Ettinger pilot-plant configuration for 365 days. Total nitrification of an influent concentration of 1200 mg NH4+–N l−1 was obtained in this period. Influent COD/N ratios between 0.71 and 3.4 g COD g N−1 were tested by varying the nitrogen loading rate (NLR) supplied to the pilot plant. An exponential decrease of nitrification rate was observed when the influent COD/N ratio increased.The experimental COD/N ratio for denitrification was 7.1±0.8 g COD g N−1 while the stoichiometric ratio was 4.2 g COD g N−1. This difference is attributable to the oxidation of organic matter in the anoxic reactor with the oxygen of the internal recycle. The influence of influent COD/N ratio on the treatment of high-strength ammonium industrial wastewater can be quantified with these results. The influence of COD/N ratio should be one of the main parameters in the design of biological nitrogen removal processes in industrial wastewater treatment.

Keywords
Biological nitrogen removal process; High-strength ammonium industrial wastewater; Influent COD/N ratio; Nitrification rate
First Page Preview
Effect of influent COD/N ratio on biological nitrogen removal (BNR) from high-strength ammonium industrial wastewater
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
Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 39, Issue 12, 29 October 2004, Pages 2035–2041
Authors
, , ,
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