CAJ | 학술논문

采用动态膜生物反应器（DMBR）处理生活污水，考察不同进水碱度对DMBR 处理效果的影响，研究反应器运行过程中运行参数的变化情况．结果表明：当碱度为25～510 mg·L－1时，碱度对出水CODCr影响不大，去除率达到92．46％；进水碱度充足（224～510 mg·L－1）时，出水NH＋4-N 去除率在98％以上；当进水碱度不足时，NH＋4-N去除率下降，DMBR出水pH 值的变化滞后于碱度的变化；当碱度在330～510 mg·L－1范围内时，动态膜通量约为23 L·（m2·h）－1，DMBR的运行周期可达39 d，反冲洗后膜通量恢复率为100％．反应器内的胞外聚合物随着进水碱度的下降而升高，DMBR 反冲洗周期缩短，膜污染趋势加重，当进水碱度下降到130 mg·L－1时，反冲洗周期下降到10 d．
채용동태막생물반응기（DMBR）처리생활오수，고찰불동진수감도대DMBR 처리효과적영향，연구반응기운행과정중운행삼수적변화정황．결과표명：당감도위25～510 mg·L－1시，감도대출수CODCr영향불대，거제솔체도92．46％；진수감도충족（224～510 mg·L－1）시，출수NH＋4-N 거제솔재98％이상；당진수감도불족시，NH＋4-N거제솔하강，DMBR출수pH 치적변화체후우감도적변화；당감도재330～510 mg·L－1범위내시，동태막통량약위23 L·（m2·h）－1，DMBR적운행주기가체39 d，반충세후막통량회복솔위100％．반응기내적포외취합물수착진수감도적하강이승고，DMBR 반충세주기축단，막오염추세가중，당진수감도하강도130 mg·L－1시，반충세주기하강도10 d．
Dynamic membrane bioreactor (DMBR)was used to treat domestic sewage.The effect of the influent alkalini-ty concentration on the DMBR treatment results was investigated,and the parameters of the reactor were tested at the same time.The results showed that,when alkalinity was 25-510 mg·L-1 ,there was little effect on the CODCr of the ef-fluent,and the removal efficiency reached 92.46%.When the alkalinity was sufficient,which was 224-510 mg·L-1 ,the ammonia nitrogen removal rate was over 98%;while the alkalinity was insufficient,the ammonia nitrogen removal rate decreased and the effect of pH on the influent of DMBR was lagged behind the alkalinity.When the alkalinity was 330-510 mg·L-1 ,the flux of the dynamic membrane could reach 23 L·(m2 ·h)-1 with the cycle of operation about 39 d,and the recovery of the membrane flux was 100%.The extracellular polymeric substances increased with the decrease of the influent alkalinity,which made the inverses washing cycle shorten and the membrane pollution severe.The inverses washing cycle reduced to 10 d when the alkalinity of influent was 130 mg·L-1 .