The effect of emerging pollutant Dechlorane Plus (DPs), an organochlorine aliphatic flame retardant, on waste-activated sludge anaerobic fermentation was investigated, and the related mechanisms were revealed for the first time. The results of this experiment suggested that the presence of DPs had a significant inhibitory effect on sludge anaerobic fermentation to generate the intermediate valuable product short-chain fatty acids (SCFA), and when the DP content was 3034.1±101.7 mg/kg total suspended solids (TSS), the maximal output of SCFA was only 215.04 mg/g, which was 0.47 times of that in the blank. The underlying mechanism investigation indicated DPs promoted the disintegration of sludge, but inhibited the process of hydrolysis and acidification. DPs inhibited the release of soluble bound extracellular polymers (SB-EPS) in sludge. The analysis of microbial community characteristics indicated that DPs reduced the level of Firmicutes and Actinobacteriathe, which were the key acid producing bacteria. At the genus level, DPs reduced the relative abundance of Proteiniclasticum and Mycobacteriumwas.

研究了新兴的污染物有机氯脂肪族阻燃剂脱氯Plus（DPs）对废物活化污泥厌氧发酵的影响，并首次揭示了其相关机理。实验结果表明，DP的存在对污泥厌氧发酵产生中间有价值产物短链脂肪酸（SCFA）有明显的抑制作用，当DP含量为3034.1±101.7 mg / kg时总悬浮固体（TSS），SCFA的最大产量仅为215.04 mg / g，是空白样品的0.47倍。潜在的机理研究表明，DPs促进了污泥的分解，但抑制了水解和酸化过程。DPs抑制了污泥中可溶性结合的细胞外聚合物（SB-EPS）的释放。Firmicutes和Actinobacteriathe，这是主要的产酸细菌。在属水平上，DPs降低了原虫和分枝杆菌的相对丰度。