Performance of wastewater sludge ecological stabilization  

作　　者：CUI Yubo SUN Tieheng ZHAO Lihui JIANG Tingliang ZHANG Liping 

机构地区：[1]Institute of Applied Ecology, Chinese Academy of Science, Shenyang 110016, China [2]Department of Environmental Engineering, Jilin Architectural and Civil Engineering Institute, Changchun 130021, China

出　　处：《Journal of Environmental Sciences》2008年第4期385-389,共5页环境科学学报（英文版）

摘　　要：In this article, wastewater sludge ecological stabilization （WWSES） was presented for sludge dewatering, mineralization, and stabilization, as well as for percolate treatment. Two years of pilot scale experimental results indicated that sludge volatile solid, Wiphenyltetrazolium chloride （TTC）-dehydrogenase activity （DHA）, and moisture content as indicators showed the process and degree of sludge stabilization. The observation on dewatering process showed that dried sludge reached a content of 20%-50% total solid after two years of system operation. Sludge TTC-DHA in the first year was obviously lower than that of the second year, and TTC-DHA tended to decrease with an increase in the drying time of the sludge. Total nitrogen, total phosphorus, and organic contents of sludge decreased gradually from the top to the bottom of dried sludge layer. In comparison with natural stands on stands treated with sewage sludge, individual shoot was significantly higher, and coarse protein, coarse fat, and coarse fiber contents in reed roots, stems, and leaves in the system were higher than that of wild reed, especially coarse protein contents of reed roots in the system （7.38%） were obviously higher than that of wild reeds （3.29%）.In this article, wastewater sludge ecological stabilization （WWSES） was presented for sludge dewatering, mineralization, and stabilization, as well as for percolate treatment. Two years of pilot scale experimental results indicated that sludge volatile solid, Wiphenyltetrazolium chloride （TTC）-dehydrogenase activity （DHA）, and moisture content as indicators showed the process and degree of sludge stabilization. The observation on dewatering process showed that dried sludge reached a content of 20%-50% total solid after two years of system operation. Sludge TTC-DHA in the first year was obviously lower than that of the second year, and TTC-DHA tended to decrease with an increase in the drying time of the sludge. Total nitrogen, total phosphorus, and organic contents of sludge decreased gradually from the top to the bottom of dried sludge layer. In comparison with natural stands on stands treated with sewage sludge, individual shoot was significantly higher, and coarse protein, coarse fat, and coarse fiber contents in reed roots, stems, and leaves in the system were higher than that of wild reed, especially coarse protein contents of reed roots in the system （7.38%） were obviously higher than that of wild reeds （3.29%）.

关 键 词：constructed wetland ecological stabilization treatment and disposal wastewater sludge 

分 类 号：X7[环境科学与工程—环境工程]