通过3组平行膜生物反应(MBR)的长期实验,考察了不同污泥负荷和曝气强度下,膜污染状况、EPS浓度及其组分含量之间的关系.结果表明:污泥负荷越高,混合液中所含溶解性EPS含量越高,被污染膜片所粘附的多糖也越多,膜污染速率越快;MBR混合液的可过滤性与溶解性EPS,特别是多糖有较好的线性关系,这表明多糖是重要的膜污染物质.当污泥负荷在0.08 kgCOD/(kgMLVSS·d)左右时,反应器能较长时间稳定运行.在稳定运行的系统中,曝气强度对EPS浓度影响不明显.
参考文献
| [1] | 顾国维;何义亮.MBR在污水处理中的研究与应用[M].北京:化学工业出版社,2002:1-2,292. |
| [2] | Mark D. Williams;Massoud Pirbazari .Membrane bioreactor process for removing biodegradable organic matter from water[J].Water research: A journal of the international water association,2007(17):3880-3893. |
| [3] | Sandra Rosenberger;Matthias Kraume .Filterability of activated sludge in membrane bioreactors[J].Desalination: The International Journal on the Science and Technology of Desalting and Water Purification,2002(1/3):373-379. |
| [4] | Chrysi S. Laspidou;Bruce E. Rittmann .A unified theory for extracellular polymeric substances, soluble microbial products, and active and inert biomass[J].Water research: A journal of the international water association,2002(11):2711-2720. |
| [5] | Yan L;Herbert H;Fang P .Influences of extracellular polymeric substances (EPS) on flocculation,settling,and dewatering of activated sludge[J].Environmental Science and Technology,2003,33(03):237-273. |
| [6] | Le-Clech P;Chen V;Fane TAG .Fouling in membrane bioreactors used in wastewater treatment[J].Journal of Membrane Science,2006(1/2):17-53. |
| [7] | Jones W L .Operation of a three-stage SBR system for nitrogen removal wastewater[J].Res J WPCF,1990,62(03):1268-1273. |
| [8] | Dubois M;Gilles K A;Hamilton J K et al.Calorimetric method for determination of sugars and related substances[J].Analytical Chemistry,1956,28(03):350-356. |
| [9] | Bradford M M .A rapid and sensitive method for quantification of microgram quantities of protein utilizing the principle of protein-dye binding[J].Analytical Biochemistry,1976,72:248-254. |
| [10] | Ji L;Zhou JT .Influence of aeration on microbial polymers and membrane fouling in submerged membrane bioreactors[J].Journal of Membrane Science,2006(1/2):168-177. |
| [11] | Jong-Sang Park;Kyung-Min Yeon;Chung-Hak Lee .Hydrodynamics and microbral physiology affecting performance of a new MBR,membrane-coupled high-performance compact reactor[J].Desalination: The International Journal on the Science and Technology of Desalting and Water Purification,2005(2):181-188. |
| [12] | Liao BQ.;Droppo IG.;Leppard GG.;Liss SN.;Allen DG. .Surface properties of sludge and their role in bioflocculation and settleability[J].Water research: A journal of the international water association,2001(2):339-350. |
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