皮革废水对ABR分区进水微生物相的影响研究

在制革废水ρ(COD)=3 000～3 200 mg/L,HRT=24 h时,采用六格室厌氧折流板反应器(ABR),在1、3、5格室以5∶3∶2的比例进水,通过COD、挥发性脂肪酸(VFA)、辅酶F420等指标的变化研究反应器各格室的微生物相分布情况。结果表明:COD和VFA在3,5格室分别出现下降和升高,整体性能稳定,而格室内微生物种群大致相同但优势菌群有所差异,前端格室以产酸菌为主,后端格室以甲烷菌为主。

RESEARCH FOR EFFECTS ON MICROBIAL PHASE OF LEATHER WASTEWATER WITH SPLIT-FEED INFLUENT IN ABR

The process performance of split-feed influent compared with single influent in an anaerobic baffled reactor(ABR) that had six compartments under the conditions of HRT 24 h and COD 3 000 ～ 3 200 mg /L was studied.The influent ratio of the split-feed influent in ABR was 5∶ 3∶ 2 in 1st,3rd and 5th compartment.Finally through the change in COD,VFA,F420 etc,the distribution of microbiofacies in compartments of ABR was studied.The results showed COD removal rate and VFA in 3rd and 5th compartment would be reduced and increased.The performance was stable,the bacteria were almost identical but the dominant species were different,acidogenic bacteria were predominant in the initial compartments while methanogenic bacteria were predominant in the latter compartments in split-feed influentin in ABR.