【摘要】 通过对广西壮族自治区13个地级市的城镇污水处理厂污泥进行实地采样和测定,分析了污泥中的有机质、氮、磷、钾、重金属等含量及其热值水平。结果表明,广西地区的城镇污泥中养分(有机质、氮、磷、钾)含量较高,符合农用泥质、园林绿化用泥质和林地用泥质标准;对于污泥中的重金属含量,除个别城市污泥中的Zn含量超标外,其他均无超标现象;另外,污泥热值水平较低,尚不具备开展焚烧处置的泥质条件。从目前来看,无害化处理后进行土地利用是比较适合广西地区城镇污泥的处置技术路线。更多还原

【Abstract】 Sewage sludge samples were obtained from thirteen cities of Guangxi Zhuang Autonomous Region to analyze their levels of organic matter,nitrogen,phosphorus,potassium,heavy metals,and calorific value.The results indicated that the nutrients in sludge were higher than the limits from agricultural,garden and forestry standards.Except for zinc in sludge from individual cities,other heavy metals did not exceed the standards.Due to the low calorific value of sewage sludge,it was not qualified for incineration.Presently,the sewage sludge from Guangxi Zhuang Autonomous Region after harmless treatment preferably should be reclaimed as organic manure or humus soil.更多还原