School of Civil Engineering and Transportation, Hebei University of Technology, Tianjin, 300401, China.
School of Civil Engineering and Transportation, Hebei University of Technology, Tianjin, 300401, China.
Environ Res. 2020 Nov;190:110006. doi: 10.1016/j.envres.2020.110006. Epub 2020 Aug 9.
Waste activated sludge (WAS) was disintegrated by composite ferrate solution (CFS) in this work, and the effect of CFS disintegrated sludge supernatant (CDSS), as a supplementary carbon source, on enhancement of nitrogen and phosphorus removal and sludge reduction in an AAO-CFSSDR (Anaerobic/Anoxic/Oxic combined with CFS-Sludge disintegration reactor) process was evaluated. The results showed that CDSS was easily utilizable by the denitrification bacteria due to the high content of readily biodegradable substrates. When compared with the AAO process, the operation results of AAO-CFSSDR suggested that the removal efficiencies of TN, NH-N and TP increased from 71.15, 79.23 and 85.52% to 85.05, 87.70 and 90.06%, respectively; and the sludge was reduced by 34.79%. The 16SrRNA high-throughput sequencing results showed that the introduction of CDSS weakened the microbial diversity but enhanced the microbial richness; and the abundance of bacteria related to the removal of nitrogen and phosphorus, increased in the AAO-CFSSDR process.
在这项工作中，采用复合高铁酸盐溶液（CFS）对剩余活性污泥（WAS）进行了破解，评估了 CFS 破解污泥上清液（CDSS）作为补充碳源对提高 AAO-CFSSDR（厌氧/缺氧/好氧与 CFS-污泥破解反应器相结合）工艺中氮磷去除和污泥减量的效果。结果表明，CDSS 中含有大量易生物降解的基质，因此易于被反硝化细菌利用。与 AAO 工艺相比，AAO-CFSSDR 的运行结果表明，TN、NH-N 和 TP 的去除效率分别从 71.15%、79.23%和 85.52%提高到 85.05%、87.70%和 90.06%，同时污泥减少了 34.79%。16SrRNA 高通量测序结果表明，CDSS 的引入降低了微生物多样性，但提高了微生物丰富度；与氮磷去除相关的细菌丰度在 AAO-CFSSDR 工艺中增加。
