哈尔滨商业大学学报（自然科学版）
哈爾濱商業大學學報（自然科學版）
합이빈상업대학학보（자연과학판）
JOURNAL OF HARBIN UNIVERSITY OF COMMERCE(NATURAL SCIENCES EDITION)
2014年
5期
545-548
,共4页
膜污染%污泥龄(SRT)%XDLVO%胞外聚合物(EPS)
膜汙染%汙泥齡(SRT)%XDLVO%胞外聚閤物(EPS)
막오염%오니령(SRT)%XDLVO%포외취합물(EPS)
membrane fouling%sludge retention time(SRT)%XDLVO%extracellular poly-meric substance (EPS)
考察了不同SRT条件下EPS膜污染潜能，并分析了不同污泥龄（ SRT）条件下EPS与PVDF膜间的界面能参数及相互作用能形貌．结果表明， SRT 30 d 的 EPS 与 PVDF 膜之间的界面自由能（ΔGadh ）比SRT 15 d的EPS与PVDF膜之间的界面自由能（ΔGadh ）减少12．3％．SRT 15 d的EPS到达PVDF膜表面比SRT 30 d的EPS到达膜表面需要多克服4．2 KT的斥力相互作用能．过滤实验显示SRT 15 d的EPS导致了65．2％的通量衰减，而SRT 30 d的EPS引起了57．2％的通量衰减．这一结果进一步证实了与SRT 15 d的EPS相比较，SRT 30 d的EPS具有更低的污染潜能．
攷察瞭不同SRT條件下EPS膜汙染潛能，併分析瞭不同汙泥齡（ SRT）條件下EPS與PVDF膜間的界麵能參數及相互作用能形貌．結果錶明， SRT 30 d 的 EPS 與 PVDF 膜之間的界麵自由能（ΔGadh ）比SRT 15 d的EPS與PVDF膜之間的界麵自由能（ΔGadh ）減少12．3％．SRT 15 d的EPS到達PVDF膜錶麵比SRT 30 d的EPS到達膜錶麵需要多剋服4．2 KT的斥力相互作用能．過濾實驗顯示SRT 15 d的EPS導緻瞭65．2％的通量衰減，而SRT 30 d的EPS引起瞭57．2％的通量衰減．這一結果進一步證實瞭與SRT 15 d的EPS相比較，SRT 30 d的EPS具有更低的汙染潛能．
고찰료불동SRT조건하EPS막오염잠능，병분석료불동오니령（ SRT）조건하EPS여PVDF막간적계면능삼수급상호작용능형모．결과표명， SRT 30 d 적 EPS 여 PVDF 막지간적계면자유능（ΔGadh ）비SRT 15 d적EPS여PVDF막지간적계면자유능（ΔGadh ）감소12．3％．SRT 15 d적EPS도체PVDF막표면비SRT 30 d적EPS도체막표면수요다극복4．2 KT적척력상호작용능．과려실험현시SRT 15 d적EPS도치료65．2％적통량쇠감，이SRT 30 d적EPS인기료57．2％적통량쇠감．저일결과진일보증실료여SRT 15 d적EPS상비교，SRT 30 d적EPS구유경저적오염잠능．
This paper compared the fouling potential of extracellular polymeric substance ( EPS) extracted from two membrane bioreactors operated at different SRTs .Interfacial inter-action parameters and interaction energy profiles between EPS and PVDF membrane surface were also analyzed .The results showed that the free energy (ΔGadh ) between the EPS of SRT 30 d and membrane was 12 .3% lower than that between the EPS of SRT 15 d and membrane.And the EPS of SRT 30 d approaching the membrane had to overcome 4.2 KT more repulsive interaction energy than the EPS of SRT 15 d approaching the membrane .The filtration tests showed that the EPS of SRT 30 d and EPS of SRT 15 d resulted in 57 .2%and 65.2%of flux decrement , respectively, further indicating the EPS of SRT 30 d had lower fouling potential than the EPS of SRT 15 d.
