【摘要】 脱水污泥样本采自二级处理厂，用带式压滤机脱水。污泥组分和农用价值的研究表明：①主要影响因素是进厂污水的组分（污水类别和处理季节），而不是脱水与否。②生活污泥是一种富含有机质、氮、磷的优质有机肥，除去锌以外的重金属含量较低。③污泥农用控制量的确定依据是，在连续施用一段时期内农田锌负荷量低于限制值。更多还原

【Abstract】 AbstractThe Sludge samples were collected from typical secondary plants and de-watered using belt filter dewatering technique,The research on the Componentsof Sludge and its valuo tsed as a manure showcd(a)that the major factorsaffecting the fortilitv were rather composition of treated wastewater(thetreated wadte water type and treating season)than if the sludge was dewa-tered;(b)that the domestic sewage sludge was a better manure with higher contents of organic matter,Nitrogen, phosphorus and less heavy metals exceptzinc,(c)zinc loadings to agricultural land would not exceed defined time limit.更多还原