Giger W, Brunner P H, Schaffner C
Science. 1984 Aug 10;225(4662):623-5. doi: 10.1126/science.6740328.
Anaerobically treated sewage sludge was found to contain extraordinarily high concentrations of 4-nonylphenol, a metabolite derived from nonionic surfactants of the nonylphenol polyethoxylate type. Concentrations in activated sewage sludge, in mixed primary and secondary sludge, and in aerobically stabilized sludge were substantially lower, suggesting that the formation of 4-nonylphenol is favored under mesophilic anaerobic conditions. Because 4-nonylphenol may be highly toxic to aquatic life, further research is needed on the fate of 4-nonylphenol after sludge is disposed of in the environment.
经厌氧处理的污水污泥被发现含有极高浓度的4-壬基酚，它是一种源自壬基酚聚乙氧基化物类型非离子表面活性剂的代谢产物。活性污水污泥、初级和二级混合污泥以及好氧稳定污泥中的浓度则要低得多，这表明4-壬基酚的形成在中温厌氧条件下更为有利。由于4-壬基酚可能对水生生物具有高毒性，因此有必要进一步研究污泥在环境中处置后4-壬基酚的去向。
