Inhibitory effect of high NH4(+)-N concentration on anaerobic biotreatment of fresh leachate from a municipal solid waste incineration plant.
作者： Zhao Liu , Yan Dang , Caihua Li , Dezhi Sun
DOI: 10.1016/J.WASMAN.2015.06.031
关键词:
摘要: Abstract Fresh leachate from municipal solid waste (MSW) incineration plants generally contains extremely high NH 4 + –N concentration which could inhibit the bioactivity of microorganisms. The inhibitory effect on anaerobic biotreatment fresh a MSW plant in China has been investigated this study. inhibition processes was studied by both static tests and laboratory-scale expanded granular sludge bed (EGSB) reactor. specific methanogenic activity (SMA) microorganisms inhibited with increasing to 1000 mg/L tests. As well chemical oxygen demand (COD) removal efficiency methane yield decreased EGSB reactor, while volatile fatty acids (VFAs) accumulated extracellular polymeric substances (EPS) increased rising 1000 mg/L, without any rebounding during 30 days operation. Decreasing 500 mg/L influent, COD recovered about 85% after 26 days. suggested be threshold High-throughput sequencing results showed little changes microbial communities for concentration, indicating that survival most not affected under such condition. It microorganisms, resulting decrease efficiency.
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