Effect of Pypocholoride Pretreatment on the Disintegration of Excess Sludge
Year: 2013
Type: article
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.
Source: Advanced materials research
Authors: Ling Ling Wang, De Dong Sun, Jing Jing Ren, Chun Ma, Jun Hao, Mang Xue, Xin Xin Zhang
Institution: Dalian Polytechnic University
Language: English
Subfield: Pollution
Field: Environmental Science
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W2012133420