School of Municipal and Environmental Engineering;
Harbin Institute of Technnlogy;
Harbin 150090;
China;
School of Municipal and Environmental Engineering;
Harbin Institute of Technnlogy;
Harbin 150090;
Chinan 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.;
COD; SO4^2-; 生态学性质; 废水处理; 硫酸盐减少; 比率; 连续流检测;