城市污水厂污泥堆肥中试实验研究

城市污水厂污泥由于产生量大且成分复杂,如何对它进行稳定化、无害化处理已越来越受到人们的关注.本研究基于好氧发酵仓式堆肥系统,研究了城市污泥处理过程中温度、含水率、pH、有机质、水溶性有机碳、总氮和发芽指数等指标参数的变化规律.研究结果表明:当物料初始含水率控制在65%左右时,在强制通风量112.5m3/12hr,搅拌频率30min/24hr的工艺条件下,堆肥过程可以实现顺利升温并在55℃以上维持3天,满足杀灭致病菌要求的条件;14天反应周期结束时,物料含水率、水溶性有机碳和有机质含量显著降低,堆肥产品腐熟,卫生学指标达到了美国EPA污泥产品A类标准;得到的污泥产品成为性质优良的土壤质量调节剂.

Study Of Chlorobenzene's Pollution In The Songhua River

Chlorobenzene's pollution is one of the stabilize pollution in chemistry property.Generally speaking,It has such a poisonous charter that it constitute a heavy treat to human health.It is hard to eliminate,so in a extern,it is harm to aquatic environment.The research shows,the water of the Songhua river,the fish in the Songhua river,the corn irrigation whih the Songhua river,the city's running water comes from the Songhua river,all of them are contained the chlorobenzene's pollution,but it can't constitute a treat to fish and human health now.