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MBR与HMBR除污效能及相关功能微生物对比研究
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作者 李莹 刘强 +3 位作者 项玮 曲吉祥 杨翠萍 范秀磊 《工业水处理》 CAS CSCD 北大核心 2024年第7期156-161,共6页
复合式膜生物反应器(Hybrid membrane bioreactor,HMBR)是在膜生物反应器(Membrane bioreactor,MBR)中引入悬浮生物膜载体。利用高通量测序及相关分析软件筛选出具有降碳、脱氮、除磷功能的微生物,对比HMBR、MBR内微生物群落结构差异,... 复合式膜生物反应器(Hybrid membrane bioreactor,HMBR)是在膜生物反应器(Membrane bioreactor,MBR)中引入悬浮生物膜载体。利用高通量测序及相关分析软件筛选出具有降碳、脱氮、除磷功能的微生物,对比HMBR、MBR内微生物群落结构差异,结合两种反应器各自最优工况下对污染物去除效果,探究二者除污效能存在差异的原因。试验结果表明,HMBR的除污性能优于MBR,且MBR与HMBR污染物降解机制不同。HMBR拥有更优运行性能的原因在于HMBR内部拥有物种更加丰富、分布更加均匀、数量更多的微生物群落,相关功能菌在HMBR内增殖明显,尤其是悬浮填料的投加带来了功能菌的额外增量,从而提升了HMBR的污染物降碳、脱氮、除磷效能。 展开更多
关键词 膜生物反应器 复合式膜生物反应器 微生物群落结构 功能菌 除污效能
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城市污水处理厂进水水质分析及MBR膜生物处理工艺研究 被引量:2
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作者 陈琰 《化学工程师》 2024年第1期38-41,共4页
为提高城市污水的处理效率,在分析了某城市污水处理厂进水水质指标的基础之上,对目标城市污水开展了MBR膜生物处理工艺技术研究,并对其处理效果进行了分析。结果表明,目标城市污水处理厂进水水样中污染物的浓度较高,其中COD、NH_(3)-N... 为提高城市污水的处理效率,在分析了某城市污水处理厂进水水质指标的基础之上,对目标城市污水开展了MBR膜生物处理工艺技术研究,并对其处理效果进行了分析。结果表明,目标城市污水处理厂进水水样中污染物的浓度较高,其中COD、NH_(3)-N、TN、TP、SS的平均浓度分别为202.8mg·L^(-1)、38.3mg·L^(-1)、50.8mg·L^(-1)、6.1mg·L^(-1)、261.6mg·L^(-1)。采用MBR膜生物处理工艺对目标城市污水进行处理后,12个月的出水水质中污染物的含量均大幅降低,其中COD、NH3-N、TN、TP、SS的浓度平均值分别为9.82mg·L^(-1)、0.94mg·L^(-1)、8.41mg·L^(-1)、0.35mg·L^(-1)、1.93mg·L^(-1),各项指标均能达到国家标准GB 18918-2002中的一级A标准要求。研究结果认为,MBR膜生物处理工艺对目标城市污水具有较好的处理效果,可为同类城市污水的高效处理提供一定的借鉴。 展开更多
关键词 城市污水 水质分析 mbr 膜生物处理 处理效果
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RESEARCH ON MEMBRANE BIOREACTOR TREATING DOMESTIC WASTEWATER AND RELATED MECHANISMS
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作者 顾平 周丹 +1 位作者 杨造燕 刘锦霞 《Transactions of Tianjin University》 EI CAS 2001年第1期7-11,共5页
Experiments on treatment of domestic wastewater by membrane bioreactors were carried out.The results showed that this process could produce good quality effluent with low COD,turbidity and total count of bacteria.With... Experiments on treatment of domestic wastewater by membrane bioreactors were carried out.The results showed that this process could produce good quality effluent with low COD,turbidity and total count of bacteria.With intermittent operation and continuous aeration,the membrane flux was kept steady.The mechanisms of removing COD through membrane,the structure of membrane and filtration resistance were also discussed. 展开更多
关键词 wastewater treatment domestic wastewater membrane bioreactor electronic microscopic photograph filtration resistance
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增强型中空纤维膜及MBR数值模拟的研究
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作者 杨丹 刘丽妍 韩永良 《针织工业》 北大核心 2024年第3期25-30,共6页
中空纤维膜作为膜生物反应器(MBR),由于其高效性及灵活性被广泛应用于污水处理领域。文中介绍了纤维管增强型中空纤维膜,包括针织管增强膜、编织管增强膜及无纺管增强膜,综述了计算流体力学在MBR优化设计及膜污染清洗等方面的研究,并对... 中空纤维膜作为膜生物反应器(MBR),由于其高效性及灵活性被广泛应用于污水处理领域。文中介绍了纤维管增强型中空纤维膜,包括针织管增强膜、编织管增强膜及无纺管增强膜,综述了计算流体力学在MBR优化设计及膜污染清洗等方面的研究,并对增强型中空纤维膜及MBR数值模拟的应用前景进行展望。在未来的研究中,将计算流体力学与理论试验相结合可以提升研究效率,更好地解决水处理问题。 展开更多
关键词 纤维管 增强型中空纤维膜 mbr 计算流体力学 模拟
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A pilot scale anoxic/oxic membrane bioreactor(A/O MBR) for woolen mill dyeing wastewater treatment 被引量:8
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作者 ZHENG Xiang FAN Yao bo WEI Yuan song 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2003年第4期449-455,共7页
A pilot scale(10 m 3/d) anoxic/oxic membrane bioreactor(A/O MBR) was tested for dyeing wastewater treatment of woolen mill without wasting sludge in 125 days operation. Results showed that the effluent quality was exc... A pilot scale(10 m 3/d) anoxic/oxic membrane bioreactor(A/O MBR) was tested for dyeing wastewater treatment of woolen mill without wasting sludge in 125 days operation. Results showed that the effluent quality was excellent, i.e. effluent COD less than 25 mg/L, BOD 5 under 5 mg/L, turbidity lower than 0 65 NTU, and colour less than 30 DT, and met with the reuse water standard of China. The removal rates of COD, BOD 5, colour, and turbidity were 92 4%, 98 4%, 74% and 98 9%, respectively. Constant flux operation mode was carried out in this study, and backwash was effective for reducing membrane fouling and maintaining constant flux. Membrane fouling had heavy impact on energy consumption. More attention should be paid on pipe selection and design for the sidestream MBR system, too. 展开更多
关键词 activated sludge BACKWASH constant flux dyeing wastewater treatment membrane bioreactor (mbr) woolen mill
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Zeolite powder addition to improve the performance of submerged gravitation-filtration membrane bioreactor 被引量:8
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作者 HE Sheng-bing XUE Gang KONG Hai-nan 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2006年第2期242-247,共6页
In this study, the effect of zeolite powder addition on submerged membrane bioreactor (SMBR) on membrane permeability, and the removals for COD, NH3-N, TN were investigated. Through the parallel operation of control... In this study, the effect of zeolite powder addition on submerged membrane bioreactor (SMBR) on membrane permeability, and the removals for COD, NH3-N, TN were investigated. Through the parallel operation of control and test systems, it was found that the zeolite powder addition could alleviate the ultra-filtration membrane fouling and enhance the membrane permeability. On the basis of experimental investigations, a concept of "protection coating layer" was proposed to illustrate the phenomenon of UF membrane fouling. In addition, the removal for COD in test system was more stable, a little higher compared to the control system. Due to the combination of nitrification and ion exchange, a more excellent removal for NH3-N in test system was obtained regardless of influent NH3-N loading rate. It was also found that a mean 25% higher TN removal took place in the test system, and ion exchange and simultaneous nitrification and de-nitrification were analyzed to be main factors. During the stable operation period, the SOURs of test zeolite powder added sludge and control activated sludge were measured to be 75 mgO2/(gMLVSS, h) and 24 mgO2/(gMLVSS, h) respectively, it meant that the zeolite powder addition could enhance the microorganism activity significantly. 展开更多
关键词 submerged gravitation-filtration membrane bioreactor PERFORMANCE zeolite powder membrane fouling microorganism activity
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Simultaneous nitrogen and phosphor removal in an aerobic submerged membrane bioreactor 被引量:5
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作者 WANG Zhi-wei WU Zhi-chao GU Guo-wei YU Guo-ping MA Lu-ming 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2006年第3期439-445,共7页
Simultaneous nitrification and denitrification (SND) effect and phosphor removal were investigated in a one-staged aerobic submerged membrane bioreactor on pilot-scale with mixed liquor suspended solids (MLSS) 19-... Simultaneous nitrification and denitrification (SND) effect and phosphor removal were investigated in a one-staged aerobic submerged membrane bioreactor on pilot-scale with mixed liquor suspended solids (MLSS) 19--20 g/L. The effects of DO concentration, sludge floc size distribution on SND were studied. Test results suggested that SND was successfully performed in the membrane bioreactor (MBR) and about 70% total nitrogen removal efficiency was achieved when DO concentration was set to 0.2-- 0.3 mg/L. The main mechanisms governing SND were the suitable sludge floc size and the low DO concentration which was caused by low oxygen transfer rate with such a high MLSS concentration in the MBR. In the meantime, phosphor removal was also studied with polymer ferric sulfate (PFS) addition and 14 mg/L dosage of PFS was proper for the MBR to remove phosphor. PFS addition also benefited the MBR operation owing to its reduction of extracellular polymer substances (EPS) of mixed liquor. 展开更多
关键词 membrane bioreactor mbr flat-sheet membrane simultaneous nitrification and denitrifiction (SND) phosphorremoval wastewater treatment oxygen transfer rate
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Effect of sludge retention time on sludge characteristics and membrane fouling of membrane bioreactor 被引量:11
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作者 OUYANG Ke LIU Junxin 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2009年第10期1329-1335,共7页
Three identical membrane bioreactors (MBRs) were operated over 2 years at different sludge retention time (SRT) of 10 d, 40 d and no sludge withdrawal (NS), to elucidate and quantify the effect of SRT on the slu... Three identical membrane bioreactors (MBRs) were operated over 2 years at different sludge retention time (SRT) of 10 d, 40 d and no sludge withdrawal (NS), to elucidate and quantify the effect of SRT on the sludge characteristics and membrane fouling. The hydraulic retention times of these MBRs were controlled at 12 h. With increasing SRT, the sludge concentrations in the MBRs increased, whereas the ratio of volatile suspended solid to the total solid decreased, and the size of sludge granule diminished in the meantime. A higher sludge concentration at long SRT could maintain a better organic removal efficiency, and a longer SRT was propitious to the growth of nitrifiers. The performance of these MBRs for the removal of COD and NH4^+-N did not change much with different SRTs. However, the bioactivity decreased as SRT increase. The measurement of specific oxygen uptake rates (SOUR) and fluorescence in situ hybridization (FISH) with rRNA-targeted oligonucleotide probes testified that SOUR and the proportion of the bacteria-specific probe EUB338 in all DAPI-stainable bacteria decreased with increasing SRT. The concentrations of total organic carbon, protein, polysaccharides and soluble extracellular polymeric substance (EPS) in the mixed liquor supernatant also decreased with increasing SRT. The membrane fouling rate was higher at shorter SRT, and the highest fouling rate appeared at a SRT of 10 d. Both the sludge cake layer and gel layer had contribution to the fouling resistance, but the relative contribution of the gel layer decreased as SRT increase. 展开更多
关键词 membrane bioreactor sludge retention time extracellular polymeric substances wastewater treatment
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Improvement of antifouling characteristics in a bioreactor of polypropylene microporous membrane by the adsorption of Tween 20 被引量:4
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作者 XIE Ya-jie YU Hai-yin +1 位作者 WANG Shu-yuan XU Zhi-kang 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2007年第12期1461-1465,共5页
Surface modification by physical adsorption of Tween 20 was accomplished on polypropylene microporous membranes (PPMMs). Attenuated total reflection-Fourier transform infrared spectroscopy (ATR/FT-IR) and field em... Surface modification by physical adsorption of Tween 20 was accomplished on polypropylene microporous membranes (PPMMs). Attenuated total reflection-Fourier transform infrared spectroscopy (ATR/FT-IR) and field emission scanning electron microscope (FE- SEM) were used to characterize the chemical and morphological changes on the membrane surfaces. Water contact angles and relative pure water fluxes were measured. The data showed that the hydrophilic performance for the modified membranes increased with the increase in the adsorption amount of Tween 20 onto the surface or into the pores of polypropylene microporous membranes. To test the antifouling property of the membranes by the adsorption of Tween 20 in a membrane bioreactor (MBR), filtration for active sludge was performed using synthetic wastewater. With the help of the data of water fluxes and the FE-SEM photos of the modified PPMMs before or after operating in a MBR for about 12 d, the PPMMs with monolayer adsorption of Tween 20 showed higher remained flux and stronger antifouling ability than unmodified membrane and other modification membranes studied. 展开更多
关键词 surface modification polypropylene microporous membrane Tween 20 membrane bioreactor mbr FE-SEM
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Occurrence and removal of organic micropollutants in the treatment of landfill leachate by combined anaerobic-membrane bioreactor technology 被引量:7
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作者 XU Yiping ZHOU Yiqi +3 位作者 WANG Donghong CHEN Shaohua LIU Junxin WANG Zijian 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2008年第11期1281-1287,共7页
Organic micropollutants,with high toxicity and environmental concern,are present in the landfill leachate at much lower levels than total organic constituents (chemical oxygen demand (COD),biochemical oxygen demand (B... Organic micropollutants,with high toxicity and environmental concern,are present in the landfill leachate at much lower levels than total organic constituents (chemical oxygen demand (COD),biochemical oxygen demand (BOD),or total organic carbon (TOC)),and few has been known for their behaviors in different treatment processes.In this study,occurrence and removal of 17 organochlorine pesticides (OCPs),16 polycyclic aromatic hydrocarbons (PAHs),and technical 4-nonylphenol (4-NP) in landfill leachate in a comb... 展开更多
关键词 ANAEROBIC landfill leachate membrane bioreactor organic micropollutant
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Effect of powdered activated carbon on Chinese traditional medicine wastewater treatment in submerged membrane bioreactor with electronic control backwashing 被引量:8
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作者 LIU Xiao-lei REN Nan-qi MA Fang 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2007年第9期1037-1042,共6页
Chinese traditional medicine wastewater, rich in macromolecule and easy to foam in aerobic biodegradation such as Glycosides, was treated by two identical bench-scale aerobic submerged membrane bioreactors (SMBRs) o... Chinese traditional medicine wastewater, rich in macromolecule and easy to foam in aerobic biodegradation such as Glycosides, was treated by two identical bench-scale aerobic submerged membrane bioreactors (SMBRs) operated in parallel under the same feed, equipped with the same electronic control backwashing device. One was used as the control SMBR (CSMBR) while the other was dosed with powdered activated carbon (PAC) (PAC-amended SMBR, PSMBR). The backwashing interval was 5 min. One suction period was about 90 min by adjusting preestablished backwashing vacuum and pump frequency. The average flux of CSMBR during a steady periodic state of 24 d (576 h) was 5.87 L/h with average hydraulic residence time (HRT) of 5.97 h and that of PSMBR during a steady periodic state of 30 d (720 h) was 5.85 L/h with average HRT of 5.99 h. The average total chemical oxygen demand (COD) removal efficiency of CSMBR was 89.29% with average organic loading rate (OLR) at 4.16 kg COD/(m^3.d) while that of PSMBR was 89.79% with average OLR at 5.50 kg COD/(m^3.d). COD concentration in the effluent of both SMBRs achieved the second level of the general wastewater effluent standard GB8978-1996 for the raw medicine material industry (300 mg/L). Hence, SMBR with electronic control backwashing was a viable process for medium-strength Chinese traditional medicine wastewater treatment. Moreover, the increasing rates of preestablished backwashing vacuum, pump frequency, and vacuum and flux loss caused by mixed liquor in PSMBR all lagged compared to those in CSMBR; thus the actual operating time of the PSMBR system without membrane cleaning was extended by up to 1.25 times in contrast with the CSMBR system, and the average total COD removal efficiency of PSMBR was enhanced with higher average OLR. 展开更多
关键词 electronic control backwashing powdered activated carbon membrane bioreactor aerobic process wastewater treatment
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Study on membrane fouling of submerged membrane bioreactor in treating bathing wastewater 被引量:6
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作者 GUO Jifeng XIA Siqing +1 位作者 WANG Rongchang ZHAO Jianfu 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2008年第10期1158-1167,共10页
A pilot-scale submerged membrane bioreactor (MBR) was used to treat the bathing wastewater for more than 90 d. Several factors a?ecting membrane fouling were studied, including the variation in transmembrane pressure ... A pilot-scale submerged membrane bioreactor (MBR) was used to treat the bathing wastewater for more than 90 d. Several factors a?ecting membrane fouling were studied, including the variation in transmembrane pressure (TMP), changes in extracellular polymeric substance (EPS), and distribution of membrane resistance (R). The relationships between R and EPS concentration were found to be R = 0.00008(EPSS)2.915 in the mixed liquor (EPSS) and R = 0.2853(EPSm) – 0.824 on the membrane surface (EPSm). The constant ... 展开更多
关键词 mbr membrane fouling extracellular polymeric substance (EPS) PCR-DGGE fluorescent in situ hybridization (FISH)
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Bacterial diversity in activated sludge from a consecutively aerated submerged membrane bioreactor treating domestic wastewater 被引量:5
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作者 DU, Cheng WU, Zhenbin +4 位作者 XIAO, Enrong ZHOU, Qiaohong CHENG, Shuiping LIANG, Wei HE, Feng 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2008年第10期1210-1217,共8页
The bacterial diversity of activated sludge from submerged membrane bioreactor (SMBR) was investigated. A 16S rDNA clone library was generated, and 150 clones were screened using restriction fragment length polymorphi... The bacterial diversity of activated sludge from submerged membrane bioreactor (SMBR) was investigated. A 16S rDNA clone library was generated, and 150 clones were screened using restriction fragment length polymorphism (RFLP). Of the screened clones, almost full-length 16S rDNA sequences of 64 clones were sequenced. Phylogenetic tree was constructed with a database containing clone sequences from this study and bacterial rDNA sequences from NCBI for identification purposes. The 90.6% of the clones were a?l... 展开更多
关键词 bacterial diversity restriction fragment length polymorphism (RFLP) submerged membrane bioreactor (Smbr 16S rDNA clone library
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Modelling the biological performance of a side-stream membrane bioreactor using ASM1 被引量:3
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作者 TIANKe-jun LIUXin-ai +3 位作者 JIANGTao M.D.Kennedy J.C.Schippers P.A.Vanrolleghem 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2004年第6期1020-1023,共4页
Membrane bioreactors(MBRs) are attracting global interest but the mathematical modeling of the biological performance of MBRs remains very limited. This study focuses on the modelling of a side-stream MBR system using... Membrane bioreactors(MBRs) are attracting global interest but the mathematical modeling of the biological performance of MBRs remains very limited. This study focuses on the modelling of a side-stream MBR system using Activated Sludge Model No.1(ASM1), and comparing the results with the modelling of traditional activated sludge processes. ASM1 parameters relevant for the long-term biological behaviour in MBR systems were calibrated(i.e. Y H=0.72gCOD/gCOD, Y A=0.25gCOD/gN, b H=0.25 d -1, b A=0.080 d -1 and f P=0.06), and generally agreed with the parameters in traditional activated sludge processes, with the exception that a higher autotrophic biomass decay rate was observed in the MBR. A sensitivity analysis for steady state operation and DO dynamics suggested that the biological performance of the MBR system(the sludge concentration, effluent quality and the DO dynamics) are very sensitive to the parameters(i.e. Y H, Y A, b H, b A, μ maxH and μ maxA), and influent wastewater components(X I, S S, X S, S NH). 展开更多
关键词 membrane bioreactor MODELLING parameter estimation
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Feasibility and simulation model of a pilot scale membrane bioreactor for wastewater treatment and reuse from Chinese traditional medicine 被引量:4
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作者 REN Nan-qi YAN Xian-feng +3 位作者 CHEN Zhao-bo HU Dong-xue GONG Man-li GUO Wan-qian 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2007年第2期129-134,共6页
The lack and pollution of water resource make wastewater reuse necessary. The pilot scale long-term tests for submerged membrane bioreactor were conducted to treat the effluents of anaerobic or aerobic treatment proce... The lack and pollution of water resource make wastewater reuse necessary. The pilot scale long-term tests for submerged membrane bioreactor were conducted to treat the effluents of anaerobic or aerobic treatment process for the high-strength Chinese traditional medicine wastewater. This article was focused on the feasibility of the wastewater treatment and reuse at shorter hydraulic retention time (HRT) of 5.0, 3.2 and 2.13 h. MLSS growth, membrane flux, vacuum values and chemical cleaning periods were also investigated. The experimental results of treating two-phase anaerobic treatment effluent demonstrated that the CODfilt was less than 100 mg/L when the influent COD was between 500-10000 mg/L at HRT of 5.0 h, which could satisfy the normal discharged standard in China. The experimental results to treat cross flow aerobic reactor effluent demonstrated that the average value of CODfilt was 17.28 mg/L when the average value of influent COD was 192.84 mg/L at HRT of 2.13 h during 106 d, which could completely meet the normal standard for water reuse. The maximum MLSS and MLVSS reached 24000 and 14500 mg/L at HRT of 3.2 h respectively. Membrane flux had maximal resume degrees of 94.7% at vacuum value of 0.02 MPa after cleaning. Chemical cleaning periods of membrane module were 150 d. A simulation model of operational parameters was also established based on the theory of back propagation neural network and linear regression of traditional mathematical model. The simulation model showed that the optimum operational parameters were suggested as follows: HRT was 5.0 h, SRT was 100 d, the range of COD loading rate was between 10.664-20.451 kg/(m3.d), the range of MLSS was between 7543-13694 mg/L. 展开更多
关键词 submerged membrane bioreactor (Smbr Chinese traditional medicine wastewater hydraulic retention time (HRT) simulation model pilot scale test
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Inorganic nitrogen removal of toilet wastewater with an airlift external circulation membrane bioreactor 被引量:2
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作者 LI Gang WU Lin-lin DONG Chun-song WU Guang-xia FAN Yao-bo 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2007年第1期12-17,共6页
Removal of inorganic nitrogen (inorganic-N) from toilet wastewater, using a pilot-scale airlift external circulation membrane bioreactor (AEC-MBR) was studied. The results showed that the use of AEC-MBR with limit... Removal of inorganic nitrogen (inorganic-N) from toilet wastewater, using a pilot-scale airlift external circulation membrane bioreactor (AEC-MBR) was studied. The results showed that the use of AEC-MBR with limited addition of alkaline reagents and volumetric loading rates of inorganic-N of 0.19-0.40 kg inorganic-N/(m^3·d) helped achieve the desired nitrification and denitrification. Furthermore, the effects of pH and dissolved oxygen (DO) on inorganic-N removal were examined. Under the condition of MLSS at 1.56-2.35 g/L, BODs/ammonia nitrogen (NH4+-N) at 1.0, pH at 7.0-7.5, and DO at 1.0-2.0 mg/L, the removal efficiencies of NH4^+-N and inorganic-N were 91.5% and 70.0%, respectively, in the AEC-MBR. The cost of addition of alkaline reagent was approximately 0.5-1.5 RMB yuan/m^3, and the energy consumption was approximately 0.72 kWh/m^3 at the flux of 8 L/(m^2-h). 展开更多
关键词 inorganic nitrogen removal treatment of wastewater from toilet airlift external circulation membrane bioreaetor (AECmbr membrane bioreactor mbr
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Membrane Separation Technology on Pharmaceutical Wastewater by Using MBR (Membrane Bioreactor) 被引量:6
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作者 Saima Fazal Beiping Zhang +2 位作者 Zhengxing Zhong Lan Gao Xiejuan Lu 《Journal of Environmental Protection》 2015年第4期299-307,共9页
This study demonstrated the feasibility of implementing of MBR in pharmaceutical wastewater independently, and concluded different applications of MBR in industries. Membrane bioreactor (MBR) technology was a new wast... This study demonstrated the feasibility of implementing of MBR in pharmaceutical wastewater independently, and concluded different applications of MBR in industries. Membrane bioreactor (MBR) technology was a new wastewater treatment technology with a combination of membrane separation technology and biological treatment technology, which had unique advantages on pharmaceutical wastewater treatment. The modified membrane rector design provided a significantly lower concentration of NH3-N, Phosphorous, Total Nitrogen and COD around the membranes, and subsequently a more sustainable membrane performance due to much lower overall fouling rates. In this paper, the classification and structure of biological waste water treatment by using MBR technology were summed up along with some examples of MBR in industrial wastewater treatment, which was emphatically analyzed and discussed. Finally, the prospect of MBR in industrial wastewater treatment was described. The industrial wastewater was a high-strength wastewater which had characteristics of complicated constituents, high organics concentration, highly toxic. 展开更多
关键词 membrane bioreactor PHARMACEUTICAL WASTEWATER membrane Separation Technology
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Determination and discussion hydraulic retention time in membrane bioreactor system 被引量:2
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作者 ZHANGShao-yuan RenzevanHouten +3 位作者 DickH.Eikelboom JIANGZhao-chun FANYao-bo WANGJu-si 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2002年第4期501-507,共7页
Based on the microorganism kinetic model, the formula for computing hydraulic retention time in a membrane bioreactor system (MBR) is derived. With considering HRT as an evaluation index a combinational approach was u... Based on the microorganism kinetic model, the formula for computing hydraulic retention time in a membrane bioreactor system (MBR) is derived. With considering HRT as an evaluation index a combinational approach was used to discuss factors which have an effect on MBR. As a result, the influencing factors were listed in order from strength to weakness as: maximum specific removal rate K , saturation constant K s, maintenance coefficient m , maximum specific growth rate μ m and observed yield coefficient Y obs . Moreover, the formula was simplified, whose parameters were experimentally determined in petrochemical wastewater treatment. The simplified formula is θ=1.1(1/β-1)(K s +S)/KX 0, for petrochemical wastewater treatment K and K s equaled 0 185 and 154.2, respectively. 展开更多
关键词 membrane bioreactor wastewater treatment hydraulic retention time microbial kinetic model kinetic constant operation constant
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Removal of Di-2-Ethyl Hexyl Phthalates by Membrane Bioreactor 被引量:3
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作者 Salah Al Sakiti Suwanna Kitpati Boontanon Narin Boontanon 《Journal of Environmental Protection》 2013年第4期380-384,共5页
A lab scale membrane bioreactor system was built to investigate the removal of Di-2-Ethyl Hexyl Phthalates (DEHP) in wastewater under variation of three runs: two hydraulic retention time (HRT) 24 and 36 hours in addi... A lab scale membrane bioreactor system was built to investigate the removal of Di-2-Ethyl Hexyl Phthalates (DEHP) in wastewater under variation of three runs: two hydraulic retention time (HRT) 24 and 36 hours in addition to two biomass: concentrated and light sludge. Solid phase extraction (SPE) followed by high performance liquid chromatography coupled with tandem mass spectrometry (HPLC-MS/MS) was applied to quantitatively identify DEHP in wastewater samples. Membrane bioreactor was built and operated to investigate DEHP removal. Higher HRT removed DEHP more efficiently than lower HRT. The concentrated MLSS could achieve higher removal efficiency than the lighter MLSS at the same HRT value. The performance of MBR in removing DEHP, TOC and COD from wastewater with a maximum removal efficiency were 29%, 85%, and 98%, respectively. Mass balance of DEHP in the system indicated that a majority was removed by adsorption process rather than filtration or microbiological process. 展开更多
关键词 DEHP LC-MS/MS membrane bioreactor (mbr) Solid Phase Extraction (SPE)
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Effect of components in activated sludge liquor on membranefouling in a submerged membrane bioreactor 被引量:1
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作者 YU Shui-li ZHAO Fang-bo +2 位作者 ZHANG Xiao-hui JING Guo-lin ZHEN Xiang-hua 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2006年第5期897-902,共6页
By a membrane bioreactor with a settle tank in long-term operation and batch experiments, the effects of floes, soluble microorganism products (SMPs) and metal ions in activated sludge liquor on membrane fouling wer... By a membrane bioreactor with a settle tank in long-term operation and batch experiments, the effects of floes, soluble microorganism products (SMPs) and metal ions in activated sludge liquor on membrane fouling were investigated. The results showed that foulants absorbed each other and formed a fouling layer as a "second membrane" influencing the permeability of the membrane. The "gel layer" caused by SMPs and "cake layer" by floes showed great differences in morphology by analysis of scanning electron microscope and atomic force microscope. The "gel layer" was more compact and of poor permeability. When the membrane flux was 40 L/(m^2·h), the rate of membrane fouling caused by supernatant (0.011 MPa/h) was greater than that by sludgc liquor (0.0063 MPa/h). SMPs played very important roles on membrane fouling. In the bulking sludge, with SMPs increasing, the rate of membrane fouling (0.0132 MPa/h) was faster. While after flocculation of the SMPs, the rate of fouling decreased to 0.0034 M Pa/h. Floes could keep holes in their overlaps. They could alleviate membrane fouling by preventing the SMPs directly attaching on membrane surface. 展开更多
关键词 membrane bioreactor mbr membrane fouling soluble microbial products (SMPs) atomic force microscopy (AFM)
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