昆明市污水处理厂污泥的土地利用可行性研究  

Feasibility of Land Application of Sewage Sludge from Kunming Wastewater Treatment Plants

作　　者：何洁 张旭 肖丹 白涛 郑国砥[2] 陈同斌[2] 

机构地区：[1]昆明市城市排水监测站,云南昆明650034 [2]中国科学院地理科学与资源研究所环境修复中心,北京100101

出　　处：《中国给水排水》2010年第17期103-105,共3页China Water & Wastewater

基　　金：昆明市科技计划重点项目(07S010002)

摘　　要：对昆明市6座污水处理厂的有机质及养分含量进行调查分析，并将调研结果与全国污水处理厂污泥的平均值以及农家肥进行比较。结果表明，昆明市污水处理厂的污泥有机质含量为50．1％～57．2％、氮含量为2．10％～2．93％、磷含量为1．53％～2．77％、钾含量为0．53％～1．02％。整体上看，昆明市城市污水处理厂污泥的有机质和氮、磷含量较高，污泥土地利用的潜力较大，是一种值得合理利用的有机肥源。但限于污泥中重金属含量的影响，调查的6座污水处理厂中，第一、二和五污水处理厂的污泥可进行土地利用，但利用前需进行无害化处理；第三、四、六污水处理厂的污泥中重金属含量超标严重，不可进行土地利用，尤其是第三污水处理厂的污泥不仅不能进行土地利用，也不能干化后作为垃圾填埋场的覆盖土。The organic matter and nutrients in sewage sludge from six wastewater treatment plants in Kunming City were investigated, and a comparison of the investigation results with the average values in sewage sludge from domestic WWTPs and farmyard manure was made. The results show that the organic matter, nitrogen, phosphorus and potassium in sewage sludge from the six wastewater treatment plants are 50.1% to 57.2% , 2.10% to 2.93% , 1.53% to 2.77% and 0.53% to 1.02% respectively. As a whole, the organic matter, nitrogen and phosphorus in sewage sludge from these plants are richer, the potential of sludge land application is higher, and it is an organic manure source that merits a reasonable application. However, due to the influence of heavy metals in the sludge, only the sludge from the first, second and fifth WWTPs can be used on land, but it needs safe treatment before application. The sludge from the third, fourth and sixth WWTPs can not be used on land for the concentrations of heavy metals which seriously exceed the standard, especially the sludge from the third WWTP can not even be disposedas the cover material for landfill site after drying.

关 键 词：城市污泥 土地利用 有机质 养分 重金属 

分 类 号：X703[环境科学与工程—环境工程]