Treatment of coal gasification wastewater by a two-continuous UASB system with step-feed for COD and phenols removal.
作者： Wei Wang , Hongjun Han , Min Yuan , Huiqiang Li , Fang Fang
DOI: 10.1016/J.BIORTECH.2010.10.019
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摘要: Abstract A two-continuous mesophilic (37 ± 2 °C) UASB system with step-feed was investigated as an attractive optimization strategy for enhancing COD and total phenols removal of the improving aerobic biodegradability real coal gasification wastewater. Through period, maximum efficiencies reached 55–60% 58–63% respectively in system, at influent flow distribution ratio 0.2 concentration 2500 mg/L; corresponding were low levels 45–50% 43–50% HRT 48 h during single-feed period. The specific methanogenic activity substrate utilization rate 592 ± 16 mg COD-CH 4 /(gVSS d) 89 ± 12 mg phenol/(gVSS d) operation. After anaerobic digestion step-feed, effluent decreased from 270 ± 9 to 215 ± 10 mg/L. results suggested that enhanced degradation refractory organics second reactor.
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