给水排水
給水排水
급수배수
2014年
z1期
206-209,210
,共5页
聚氯化铝%絮凝A/O-MBR%膜污染%污水处理
聚氯化鋁%絮凝A/O-MBR%膜汙染%汙水處理
취록화려%서응A/O-MBR%막오염%오수처리
Polymeric aluminium%Flocculation%A/O-MBR%Membrane fouling%Wastewater treat-ment
以聚氯化铝（PACl）为无机絮凝剂，考察PACl的投加对长期运行的A/O -MBR中污染物去除效果、膜污染速率、污泥混合液性能、以及溶解性微生物产物（SMP）及胞外聚合物（EPS）含量的影响。首先通过烧杯试验确定A/O -MBR中最佳PACl投加量为400 mg/L。采用两套A/O -MBR长期对照运行结果表明，PACl的投加提高了反应器对总磷的去除效果及污泥沉降性能，并降低了膜污染速率。投加PACl反应器中污泥平均粒径由124.59μm增加到159.43μm ，降低了胶体及小颗粒物质的比例，同时PACl对SM P中多糖的吸附也是降低其膜污染速率的主要原因之一。
以聚氯化鋁（PACl）為無機絮凝劑，攷察PACl的投加對長期運行的A/O -MBR中汙染物去除效果、膜汙染速率、汙泥混閤液性能、以及溶解性微生物產物（SMP）及胞外聚閤物（EPS）含量的影響。首先通過燒杯試驗確定A/O -MBR中最佳PACl投加量為400 mg/L。採用兩套A/O -MBR長期對照運行結果錶明，PACl的投加提高瞭反應器對總燐的去除效果及汙泥沉降性能，併降低瞭膜汙染速率。投加PACl反應器中汙泥平均粒徑由124.59μm增加到159.43μm ，降低瞭膠體及小顆粒物質的比例，同時PACl對SM P中多糖的吸附也是降低其膜汙染速率的主要原因之一。
이취록화려（PACl）위무궤서응제，고찰PACl적투가대장기운행적A/O -MBR중오염물거제효과、막오염속솔、오니혼합액성능、이급용해성미생물산물（SMP）급포외취합물（EPS）함량적영향。수선통과소배시험학정A/O -MBR중최가PACl투가량위400 mg/L。채용량투A/O -MBR장기대조운행결과표명，PACl적투가제고료반응기대총린적거제효과급오니침강성능，병강저료막오염속솔。투가PACl반응기중오니평균립경유124.59μm증가도159.43μm ，강저료효체급소과립물질적비례，동시PACl대SM P중다당적흡부야시강저기막오염속솔적주요원인지일。
Polymeric aluminium (PACl) was used as the flocculant to investigate the effects of flocculant on the performance of A/O -MBR ,which included the pollutants removal efficiencies , membrane fouling rate ,properties of mixed liquor ,and concentration of soluble microbial products (SMP) and extracellular polymeric substances (EPS) .The optimum dosage of PACl determined by jar test was 400 mg/L .The results of A/O -MBR long-term performance showed that the removal rate of total phosphorus and the sludge volume index were improved by the addition of PACl ,and the membrane fouling rate was mitigated .The mean sludge particle size was increased from 124 .59μm to 159 .43 μm ,and the percentage of colloids and small particles was obviously reduced by the flocculation .Besides ,the adhesion removal of polysaccharide in SMP by PACl was another reason for the reducing of membrane fouling rate .
