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http://dx.doi.org/10.17137/korrae.2015.23.1.052

Coagulating effects of several eco-friendly coagulant materials favorable for vermicomposting sewage sludge  

Bae, Yoon-Hwan (Dept. of Life Science, Daejin Univ.)
Park, Soon-Cheol (Dept. of Life Science, Chung-Ang Univ.)
Publication Information
Journal of the Korea Organic Resources Recycling Association / v.23, no.1, 2015 , pp. 52-62 More about this Journal
Abstract
Coagulating effects of eco-friendly coagulant materials such as zeolite, kaolinite, loess and chitosan upon sewage sludge were evaluated. And coagulating effects of the mixtures of those materials and polymer (polyacrylamide) were also investigated. Coagulating efficiency of loess was higher than that of kaolinite and zeolite at the treatment levels of 2,500~50,000mg/L. Coagulating efficiencies of zeolite, kaolinite and loess at the treatment level of 20,000mg/L were lower than that of 1,000 mg/L of polymer, which meant that single application of those materials in real plant were not feasible. At the treatment level of 1,000 mg/L, coagulating efficiency of Chitosan was much lower than that of polymer, which also meant that single use of chitosan in real plant could be unrealistic because of its high price. However, the application of the mixture of 'polymer 80mg/L + kaolinite or loess 500 mg/L + chitosn 10mg/L' or the mixture of 'polymer 80mg/L + kaolinite or loess 500mg/L' was promising way for coagulating sewage sludge.
Keywords
coagulant; sewage sludge; vermicomposting; polymer; loess; kaolinite; chitosan;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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