城市污泥与促腐剂堆肥中壬基酚类物质的研究

Study on nonylphenolic compounds during composting of municipal sludge and rot promoting agent

城市污泥中富含具有内分泌干扰活性的壬基酚(NP)和短链壬基酚聚氧乙烯醚(NP2EO、NP1EO)。污泥堆肥土地利用是国内外城市污泥最重要的处置方式。通过在污泥中添加促腐剂后堆肥发酵,进行了壬基酚类物质的变化研究,研究发现:从壬基酚二氧乙烯醚(NP2EO)、壬基酚单氧乙烯醚(NP1EO)和NP这3种物质总量的降解效果来看,好氧发酵优于厌氧发酵;好氧发酵过程中添加促腐剂对消除壬基酚和壬基酚聚氧乙烯醚(长链NPnEO,短链NP2EO、NP1EO)类物质是有利的。对污泥中壬基酚类物质的污染控制具有一定的指导意义。

The endocrine disruptors,nonylphenol（ NP） and short-chain nonylphenol polyethoxylates（ NP2 EO and NP1EO）,are rich in sludge. Sludge land application after composting is an important method for sludge disposal. In this paper,a rot promoting agent was added during sludge composting,and the changes in the nonylphenolic compounds were studied. The results showed that the degradation of NP2 EO,NP1EO,and NP under aerobic fermentation was better than it was under anaerobic fermentation. The rot promoting agent was favorable during aerobic fermentation,as the NP and NPnEO compounds were degraded. This study provides significant guidance for the control of pollution by nonylphenolic compounds in sludge.