Journal of South China University of Technology (Natural Science Edition) ›› 2006, Vol. 34 ›› Issue (9): 117-120,132.

• Environment Science & Technology • Previous Articles     Next Articles

Alternative Aerobic and Anaerobic Composting of Municipal Sewage Sludge M ixed with Organic Garbage

Zhou Shao-qi  Lu Wei-dong  Lin Yun-qin   

  1. School of Environmental Science and Engineering,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China
  • Received:2005-07-01 Online:2006-09-25 Published:2006-09-25
  • Contact: 周少奇(1965-)，男，教授，博士生导师，主要从事环境生物技术、城市污水处理新技术、固体废物处理与资源化研究 E-mail:fesqzhou@scut.edu.cn
  • About author:周少奇(1965-)，男，教授，博士生导师，主要从事环境生物技术、城市污水处理新技术、固体废物处理与资源化研究
  • Supported by:

    广东省环保局科技开发项目(2001-28)

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Abstract:

This paper aims at the variation laws of the phvsic0chemical and bio-toxic characteristics of municipal sewage sludge and organic garbage during the alternative aerobic and anaerobic composting.In the investigation,municipal sewage sludge,municipal organic garbage and bulking agents were uniformly mixed in a mass ratio of 3:3:1 to carry out a eomposting for 60 days.The results show that the contents of the total organic carbon.the vola-tile solids and the total nitrogen decrease respectively from 59.62% to 40.2 1% .from 76.47% to 69.85% and from 0.94% to 0.68% ,while the content of the total phosphors increases from 0.59% to 0.86% ,and that the content of humus substances remains at about 7% and the germ ination ratio reaches 72.5% at the end of the eom-posting.All these mean that the composting materials become mature compost with an greatly improved bioaetivitv .

Key words: municipal sewage sludge, organic garbage, alternative aerobic and anaerobic, composting