堆肥中腐熟污泥替代外源添加剂的研究  

Study on Adoption of Composted Sludge Stead of Additives from External Source in Compost

作　　者：牛华寺[1] 张向阳[1] 吴星五[1] 

机构地区：[1]同济大学环境科学与工程学院,上海200092

出　　处：《四川环境》2008年第6期1-3,15,共4页Sichuan Environment

基　　金：科技部国际合作重点项目资助(2006DFA92690);科技部国际合作重大项目资助(2007DFB90280)

摘　　要：本文对用腐熟污泥替代木屑等外源添加剂高温好氧堆肥作了研究。通过腐熟污泥回流三次的堆肥结果显示，每次回流的堆肥温度都能在55℃以上保持5天以上，达到无害化的要求，含水率都能降到45％左右，污泥的有机物降解率相近，pH在6～9之间。需要注意的是腐熟污泥多次回流中重金属浓度有个增加的过程，达到峰值后逐渐下降。In this paper the composted sludge was adopted stead of additive from external source in the compost study, in which the composted sludge was recycled for three times. The results showed that the compost temperature was increased to and kept above 55℃ and for more than 5 days, which met the requirement of innoxiousness. As to the feature of the composted sludge, the moisture content reduced to about 45%, and pH ranged in 6 - 9 with normal organic degradability. It should be noted that the concentration of heavy metals increased due to the sludge recycling until a peak and then decreased gradually.

关 键 词：腐熟污泥 添加剂 重金属 堆肥 回流 

分 类 号：X703[环境科学与工程—环境工程]