PAC投加量对废水处理分置式厌氧膜生物反应器膜污染特性的影响
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摘要
主要研究了不同投加量的粉末活性炭(PAC)对分置式厌氧膜生物反应器COD去除效果及膜污染特性的影响。研究结果表明:与0.67 g/L的PAC投加量相比,PAC投加量为1.33 g/L时该厌氧膜生物反应器对COD的去除率并未明显提升,但后者膜污染速率变慢,总阻力、滤饼层阻力、滤饼层阻力所占比例、混合液黏度、Zeta电位的绝对值、溶解性微生物产物(SMP)以及小粒径污泥所占比例均更小,污泥平均粒径更大。在厌氧池水力停留时间(HRT)为32 h,温度为(35±2)℃的情况下,就膜污染控制而言,投加1.33 g/L的PAC比投加0.67 g/L的PAC更有效。
Characteristics of COD removal and membrane fouling in a separated anaerobic membrane bioreactor were studied under different doses of powdered activated carbon(PAC). The results showed that COD removal was increased insignificantly under PAC dose of 1.33 g/L in the anaerobic membrane bioreactor, which was compared with the operation condition of PAC dose of 0.67 g/L. However, the membrane fouling rate was reduced under PAC dose of 1.33 g/L. Meanwhile, total resistance(R_t), cake resistance(R_c), R_c/R_t ratio, viscosity of mixed liquor, the absolute value of Zeta potential, soluble microbial products(SMP) and the amount of small sludge particle in the mixed liquor were also reduced under PAC dose of 1.33 g/L.While, average sludge particle size increased under such operation condition. Under the operational condition of hydraulic retention time(HRT) of 32 h and operational temperature of(35±2) ℃ for anaerobic reactor, PAC dose of 1.33 g/L was much more effective on reducing membrane fouling than that of PAC dose of 0.67 g/L.
Characteristics of COD removal and membrane fouling in a separated anaerobic membrane bioreactor were studied under different doses of powdered activated carbon(PAC). The results showed that COD removal was increased insignificantly under PAC dose of 1.33 g/L in the anaerobic membrane bioreactor, which was compared with the operation condition of PAC dose of 0.67 g/L. However, the membrane fouling rate was reduced under PAC dose of 1.33 g/L. Meanwhile, total resistance(R_t), cake resistance(R_c), R_c/R_t ratio, viscosity of mixed liquor, the absolute value of Zeta potential, soluble microbial products(SMP) and the amount of small sludge particle in the mixed liquor were also reduced under PAC dose of 1.33 g/L.While, average sludge particle size increased under such operation condition. Under the operational condition of hydraulic retention time(HRT) of 32 h and operational temperature of(35±2) ℃ for anaerobic reactor, PAC dose of 1.33 g/L was much more effective on reducing membrane fouling than that of PAC dose of 0.67 g/L.
引文
[1] Damayanti A, Ujang Z, Salim M R. The influenced of PAC, zeolite, and Moringa oleifera as biofouling reducer (BFR) on hybrid membrane bioreactor of palm oil mill effluent (POME)[J]. Bioresource Technology, 2011,102(6):4341-4346.
[2] 欧阳科, 谢珊, 黎丽华, 等. 投加粉末活性炭对MBR中膜污染的影响[J]. 中国给水排水, 2011,27(15):78-81.
[3] 蒋一凡, 余静, 李彬彬. PAC影响MBR膜阻力的实验研究[J]. 三峡大学学报(自然科学版), 2017,39(4):19-21.
[4] Liu X L, Ren N Q, Fang M A. Effect of powdered activated carbon on Chinese traditional medicine wastewater treatment in submerged membrane bioreactor with electronic control backwashing[J]. Journal of Environmental Sciences, 2007,19(9):1037-1042.
[5] 黄刚华, 尤朝阳, 李旋, 等. 投加物质对减缓MBR膜污染的研究[J]. 水处理技术, 2013,39(9):10-14.
[6] Dubois M, Gilles K A, Hamilton J K, et al. Colorimetric method for determination of sugars and related substances[J]. Analytical Chemistry, 1956,28(3):350-356.
[7] Lowry O H, Rosebrough N J, Farr A L, et al. Protein measurement with the folin phenol reagent[J]. Journal of Biological Chemistry, 1951,193(1):265-275.
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[9] 赵英, 于丹丹, 秦东平, 等. PAC投加量对MBR混合液性质及膜污染的影响[J]. 水处理技术, 2005,31(11):52-55.
[10] 李耀中, 贺延龄, 刘永红, 等. AS-SMBR与BPAC-SMBR运行特性的比较研究[J]. 环境科学研究, 2005,18(5):52-55.
[11] 蒋彬, 吴浩汀, 吕锡武. 投粉末活性炭SBR处理垃圾渗滤液[J]. 中国给水排水, 2005,21(6):50-52.
[12] 付婉霞, 李海俊, 张璐璐. 膜生物反应器中膜污染控制方法的研究[J]. 环境工程, 2004,22(6):15-16.
[13] Zhao Y, Gu P. Effect of powdered activated carbon dosage on retarding membrane fouling in MBR[J]. Separation and Purification Technology, 2006,52(1):154-160.
[14] Akram A, Stuckey D C. Flux and performance improvement in a submerged anaerobic membrane bioreactor (SAMBR) using powdered activated carbon (PAC)[J]. Process Biochemistry, 2008,43(1):93-102.
[15] Nagaoka H, Ueda S, Miya A. Influence of bacterial extracellular polymers on the membrane separation activated sludge process[J]. Water Science and Technology, 1996,34(9):165-172.
[16] 李岗, 陈小光, 周伟竹, 等. 厌氧膜生物反应器及其膜污染探析[J]. 化工进展, 2016,35(1):269-276.
[17] 郭勰, 刘宏菊, 高冰, 等. 处理炼油废水时粉末活性炭对MBR的影响机理[J]. 水处理技术, 2015,41(4):85-89,94.
[18] 刘宏菊, 兰效宁, 郭勰, 等. PAC投加对MBR处理炼油废水的影响[J]. 水处理技术, 2013,39(11):104-108.
[19] 李绍峰, 高元. PAC影响MBR污泥混合液特性及膜污染研究[J]. 环境科学, 2011,32(2):508-514.
[20] 刘锐, 黄霞, 范彬, 等. 膜生物反应器中溶解性微生物产物的研究进展[J]. 环境工程学报, 2002,3(1):1-7.
[21] 仵海燕. MBR中微生物产物对膜污染的影响机制研究[D].北京:中国环境科学研究院,2012.
[22] Hu Y, Wang X C, Sun Q, et al. Characterization of a hybrid powdered activated carbon-dynamic membrane bioreactor (PAC-DMBR) process with high flux by gravity flow: operational performance and sludge properties[J]. Bioresource Technology, 2017,223:65-73.
[23] Lim A L, Bai R. Membrane fouling and cleaning in microfiltration of activated sludge wastewater[J]. Journal of Membrane Science, 2003,216(1):279-290.
[24] Hong S H, Lee W N, Oh H S, et al. The effects of intermittent aeration on the characteristics of bio-cake layers in a membrane bioreactor[J]. Environmental Science & Technology, 2007,41(17):6270.
[25] Remy M, Potier V, Temmink H, et al. Why low powdered activated carbon addition reduces membrane fouling in MBRs[J]. Water Research, 2010,44(3):861-867.
[2] 欧阳科, 谢珊, 黎丽华, 等. 投加粉末活性炭对MBR中膜污染的影响[J]. 中国给水排水, 2011,27(15):78-81.
[3] 蒋一凡, 余静, 李彬彬. PAC影响MBR膜阻力的实验研究[J]. 三峡大学学报(自然科学版), 2017,39(4):19-21.
[4] Liu X L, Ren N Q, Fang M A. Effect of powdered activated carbon on Chinese traditional medicine wastewater treatment in submerged membrane bioreactor with electronic control backwashing[J]. Journal of Environmental Sciences, 2007,19(9):1037-1042.
[5] 黄刚华, 尤朝阳, 李旋, 等. 投加物质对减缓MBR膜污染的研究[J]. 水处理技术, 2013,39(9):10-14.
[6] Dubois M, Gilles K A, Hamilton J K, et al. Colorimetric method for determination of sugars and related substances[J]. Analytical Chemistry, 1956,28(3):350-356.
[7] Lowry O H, Rosebrough N J, Farr A L, et al. Protein measurement with the folin phenol reagent[J]. Journal of Biological Chemistry, 1951,193(1):265-275.
[8] 孙琪媛, 胡以松, 王晓昌. PAC-DMBR复合工艺的运行特性及处理效果研究[J]. 水处理技术, 2017,43(11):112-115.
[9] 赵英, 于丹丹, 秦东平, 等. PAC投加量对MBR混合液性质及膜污染的影响[J]. 水处理技术, 2005,31(11):52-55.
[10] 李耀中, 贺延龄, 刘永红, 等. AS-SMBR与BPAC-SMBR运行特性的比较研究[J]. 环境科学研究, 2005,18(5):52-55.
[11] 蒋彬, 吴浩汀, 吕锡武. 投粉末活性炭SBR处理垃圾渗滤液[J]. 中国给水排水, 2005,21(6):50-52.
[12] 付婉霞, 李海俊, 张璐璐. 膜生物反应器中膜污染控制方法的研究[J]. 环境工程, 2004,22(6):15-16.
[13] Zhao Y, Gu P. Effect of powdered activated carbon dosage on retarding membrane fouling in MBR[J]. Separation and Purification Technology, 2006,52(1):154-160.
[14] Akram A, Stuckey D C. Flux and performance improvement in a submerged anaerobic membrane bioreactor (SAMBR) using powdered activated carbon (PAC)[J]. Process Biochemistry, 2008,43(1):93-102.
[15] Nagaoka H, Ueda S, Miya A. Influence of bacterial extracellular polymers on the membrane separation activated sludge process[J]. Water Science and Technology, 1996,34(9):165-172.
[16] 李岗, 陈小光, 周伟竹, 等. 厌氧膜生物反应器及其膜污染探析[J]. 化工进展, 2016,35(1):269-276.
[17] 郭勰, 刘宏菊, 高冰, 等. 处理炼油废水时粉末活性炭对MBR的影响机理[J]. 水处理技术, 2015,41(4):85-89,94.
[18] 刘宏菊, 兰效宁, 郭勰, 等. PAC投加对MBR处理炼油废水的影响[J]. 水处理技术, 2013,39(11):104-108.
[19] 李绍峰, 高元. PAC影响MBR污泥混合液特性及膜污染研究[J]. 环境科学, 2011,32(2):508-514.
[20] 刘锐, 黄霞, 范彬, 等. 膜生物反应器中溶解性微生物产物的研究进展[J]. 环境工程学报, 2002,3(1):1-7.
[21] 仵海燕. MBR中微生物产物对膜污染的影响机制研究[D].北京:中国环境科学研究院,2012.
[22] Hu Y, Wang X C, Sun Q, et al. Characterization of a hybrid powdered activated carbon-dynamic membrane bioreactor (PAC-DMBR) process with high flux by gravity flow: operational performance and sludge properties[J]. Bioresource Technology, 2017,223:65-73.
[23] Lim A L, Bai R. Membrane fouling and cleaning in microfiltration of activated sludge wastewater[J]. Journal of Membrane Science, 2003,216(1):279-290.
[24] Hong S H, Lee W N, Oh H S, et al. The effects of intermittent aeration on the characteristics of bio-cake layers in a membrane bioreactor[J]. Environmental Science & Technology, 2007,41(17):6270.
[25] Remy M, Potier V, Temmink H, et al. Why low powdered activated carbon addition reduces membrane fouling in MBRs[J]. Water Research, 2010,44(3):861-867.