Effect of Pypocholoride Pretreatment on the Disintegration of Excess Sludge

Ling Ling Wang; De Dong Sun; Jing Jing Ren; Chun Ma; Jun Hao; Mang Xue; Xin Xin Zhang

doi:10.4028/www.scientific.net/AMR.864-867.1333

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 864-867Effect of Pypocholoride Pretreatment on the...

Effect of Pypocholoride Pretreatment on the Disintegration of Excess Sludge

Abstract:

This article focuses on the effects of pretreatment on sewage sludge with sodium hypochlorite addition. The solubilization of organic matters of sludge was investigated. It was found that the pypocholoride treatment provided a efficient process to release organics from sludge flocs. When the ClO^- dose was about 21mg /g SS with a reaction time of 3 hours, the supernatant soluble chemical oxygen demand (SCOD), total nitrogen (TN), total phosphorus (TP), protein and polysaccharide increased by 400%, 67%, 1791%, 635%, 214%, and 556%, respectively. After hypochlorite pretreatment, the sludge extracelluar polymers (EPS) were disintegrated and the cell walls were broken. Then the intracellular organic matters were released into the supernatant, leading to the increase of organic matters in the supernatant.

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Periodical:

Advanced Materials Research (Volumes 864-867)

Pages:

1333-1336

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.864-867.1333

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Online since:

December 2013

Authors:

Ling Ling Wang, De Dong Sun*, Jing Jing Ren, Chun Ma, Jun Hao, Mang Xue, Xin Xin Zhang

Keywords:

Pretreatment, Pypocholoride, Sewage Sludge, Sludge Lysis

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