城市污泥中有机污染物的研究进展

Research Advances on Organic Pollutants in Municipal Sludge

综述了城市污泥中有机污染物的研究进展。文章指出，城市污泥含有丰富的 N、 P、 K和有机质，但它通常也含有氯酚 (CPs)、氯苯 (CBs)、硝基苯 (NBs)、多氯联苯 (PCBs)、多氯代二苯并二恶英 /呋喃 (PCDD/Fs)、邻苯二甲酸酯 (PEs)、多环芳烃 (PAHs)和有机农药等种类复杂的有机污染物而影响其农业利用。不同城市污泥中有机污染物的种类及其含量不同，与污水的来源、污泥类型及其处理方式等因素有关。堆肥处理可以在一定程度上降低城市污泥中有机污染物的含量，从而达到农业利用的目的。

Municipal sludge is often regarded as a potential manure resource, because it contains abundant N, P, K and organic matter. However, use of such sludge on agriculture is usually limited by its consisting of various organic pollutants including chlorophenols (CPs), chlorobenzenes (CBs), nitrobenzene, polychlorinated biphenyls (PCBs), polychlorinated dibenzo－ p－ dioxins/furans (PCDD/Fs), phthalate esters (PEs), polycyclic aromatic hydrocarbons (PAHs), organic pesticides, etc. Organic compounds and their contents in different sludges are varied, depending on wastewater sources, wastewater－ treated methods, sludge types. Composting of municipal sludge can degrade organic pollutants to a great extent and, thus, it can be safely recycled in agricultural land.