昆明城市污泥性质及土地利用方式探讨

Discussion on Characteristics and Land Applitication of Municipal Sludge of Kunming

分析昆明市6个生活污水处理厂污泥的特性。昆明城市污泥含水率、有机质、总氮、总磷含量很高,总钾含量偏低,重金属Cu、Zn、Pb、Cd、As、Hg的含量满足《城镇污水处理厂污泥处置农用泥质》(CJ/T309-2009)、《城镇污水处理厂污泥处置园林绿化》(GB/T23486-2009)以及《城镇污水处理厂污泥处置土地改良》(CJ/T291-2008)要求,昆明城市污泥可以用于园林绿化、矿山废弃地以及农用。

Municipal sludge from six wastewater treatment plants of Kunming and characteristics of sludge were studied.The results of experiment showed that water ratio was high and the concentrations of organic material;TN and TP were high enough;the concentration of TK was low;total amount of heavy mentals（Cu,Zn,Pb,Cr,Sn,Hg） was relatively low and was up to Control standards for agriculture use of disposal of sludge from municipal wastewater treatment plant（CJ/T309-2009）,quality sludge used in gardens or parks of disposal of sludge from municipal wastewater treatment plant（GB/T23486-2009）,sludge quality for land improvement of disposal of sludge from municipal wastewater treatment plant（CJ/T291-2008）.And municipal sludge was suggested to be applied in park flower cultivation,in the recovery of the mining area eco-environment and in agriculture.