Utilization of a Combined Metabolic Uncoupler to Reduce Sludge Yield in Sequence Batch Reactor System

Xiao Chi Feng; Wan Qian Guo; Wen Biao Jin; Shan Shan Yang; Shuai Hao; He Shan Zheng; Nan Qi Ren

doi:10.4028/www.scientific.net/AMR.726-731.2808

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 726-731Utilization of a Combined Metabolic Uncoupler to...

Utilization of a Combined Metabolic Uncoupler to Reduce Sludge Yield in Sequence Batch Reactor System

Abstract:

This paper is to explore the feasibility of a novel combined uncoupler of 3,3ˊ,4ˊ,5-tetrachlorosalicylanilide (TCS) and 2,4,6-trichlorophenol (TCP) on excess activated sludge reduction compared to single dose of TCS and TCP. Four sequenced batch reactors (SBR) were continuously operated during two-month period dosed by different concentration of metabolic uncoupler. The comparative experiments showed that the combined uncoupler could effectively limit sludge yield by approximately 52%, followed by TCS, TCP, without obvious affecting the TOC removal rate and SVI value. At the end of the operation, the variation of zeta potential clearly indicated that uncoupler dosing affected the flocculability of activated sludge. The study demonstrated applying a combined uncoupler was feasible and promising technique to reduce sludge yield in SBR.

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Periodical:

Advanced Materials Research (Volumes 726-731)

Pages:

2808-2812

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.726-731.2808

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Online since:

August 2013

Authors:

Xiao Chi Feng, Wan Qian Guo, Wen Biao Jin, Shan Shan Yang, Shuai Hao, He Shan Zheng, Nan Qi Ren

Keywords:

Metabolic Uncoupler, Sludge Reduction, Sour, Zeta Potential

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