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Change of Ecological Characteristics Due to Decrease of COD/SO4 ^2- Ratio During Sulfate-reduction
引用本文:王爱杰,任南琪,刘广民,杜大仲.Change of Ecological Characteristics Due to Decrease of COD/SO4 ^2- Ratio During Sulfate-reduction[J].哈尔滨工业大学学报(英文版),2004,11(2):151-155.
作者姓名:王爱杰  任南琪  刘广民  杜大仲
作者单位:SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China
基金项目:Sponsored by the National Natural Science Foundation of China(Grant No. 50208006),the Scientific Research Foundation of Harbin Institute of Technology(Grant No. HIT. 2001.51)
摘    要:In order to investigate the change of ecological characteristics due to the decrease of COD/S04^2- ratio during sulfate reduction, continuous-flew tests were conducted in an acidogenic sulfate-reducing reactor with molasses wastewater as sole organic carbon source and sodium sulfate as electron acceptor, and the change of pH value, oxidation reduction potential (ORP), volatile fat acids (VFAs), alkalinity (ALK) and the predominant populations with COD/S04^2- ratio decreasing from 4. 2 to 2.0 were investigated. The experimental results demonstrated that, with decreasing COD/S04^2- ratio, ORP and ALK increased, pH value decreased, and the proportion of acetic acid in terminal products decreased significantly, and a stable -type microbial community with high COD/S04^2- ratio was converted into a sub-stable-type one with low COD/S04^2- ratio.

关 键 词:COD  SO4^2-  生态学性质  废水处理  硫酸盐减少  比率  连续流检测

Change of Ecological Characteristics Due to Decrease of COD/SO42- Ratio During Sulfate-reduction
WANG Ai-jie,REN Nan-qi,LIU Guang-min,DU Da-zhong.Change of Ecological Characteristics Due to Decrease of COD/SO42- Ratio During Sulfate-reduction[J].Journal of Harbin Institute of Technology,2004,11(2):151-155.
Authors:WANG Ai-jie  REN Nan-qi  LIU Guang-min  DU Da-zhong
Abstract:In order to investigate the change of ecological characteristics due to the decrease of COD/SO_4~(2-) ratio during sulfate reduction, continuous-flew tests were conducted in an acidogenic sulfate-reducing reactor with molasses wastewater as sole organic carbon source and sodium snlfate as electron acceptor, and the change of pH value, oxidation reduction potential (ORP), volatile fat acids (VFAs), alkalinity (ALK) and the predominant populations with COD/SO_4~(2-) ratio decreasing from 4.2 to 2.0 were investigated. The experimental results demonstrated that, with decreasing COD/SO_4~(2-) ratio, ORP and ALK increased, pH value decreased, and the proportion of acetic acid in terminal products decreased significantly, and a stable -type microbial community with high COD/SO_4~(2-) ratio was converted into a sub -stable -type one with low COD/SO_4~(2-) ratio.
Keywords:sulfate-reduction  COD/SO_4~(2-)ratio  ecological characteristic  wastewater treatment
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