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| 1 | Effect of seed sludge on characteristics and microbial community of aerobic granular sludge显示文摘Aerobic granular sludge was cultivated by using different kinds of seed sludge in sequencing batch airlift reactor.The influence of seed sludge on physical and chemical properties of granular sludge was studied;the microbial community structure was probed by using scanning electron microscope and polymerase chain reaction-denaturing gradient gel electrophoresis(PCR-DGGE).The results showed that seed sludge played an important role on the formation of aerobic granules.Seed sludge taken from beer wastewater treatment plant(inoculum A) was more suitable for cultivating aerobic granules than that of sludge from municipal wastewater treatment plant(inoculum B).Cultivated with inoculum A, large amount of mature granules formed after 35 days operation, its SVI reached 32.75 mL/g, and SOUR of granular sludge was beyond 1.10 mg/(g·min).By contrast, it needed 56 days obtaining mature granules using inoculum B.DGGE profiles indicated that the dominant microbial species in mature granules were 18 and 11 OTU when inoculum A and B were respectively employed as seed sludge.The sequencing results suggested that dominant species in mature granules cultivated by inoculum A were Paracoccus sp., Devosia hwasunensi, Pseudoxanthomonas sp., while the dominant species were Lactococcus raffinolactis and Pseudomonas sp.in granules developed from inoculum B. | Zhiwei Song Yuejun Pan Kun Zhang Nanqi Ren Aijie Wang | 2010 | Journal of Environmental Sciences2010，22，9： | 18 |
| 2 | Monitoring microbial community structure and succession of an A/O SBR during start-up period using PCR-DGGE显示文摘Polymerase chain reaction(PCR)-denaturing gradient gel electrophoresis(DGGE) protocol was employed for revealing microbial community structure and succession in a sequential anaerobic and aerobic reactor performing enhanced biological phosphorus removal(EBPR) during start-up period.High phosphorus removal was achieved after 15 d.On day 30,phosphorus removal effciency reached to 83.2% and the start-up was finished.DGGE profiles of periodical sludge samples showed that dominant microbial species were 19 OTUs(operational taxonomy units).Unweighted pair-group method using arithmetic averages(UPGMA) clustering analysis revealed that rapid community succession correlated to low phosphorus removal rate and high phosphorus removal effciency reflected on steady community structure.Sequencing results indicated that determined sequences(12 OTUs) belonged to Proteobacterium,Actinobacteria,Gemmatimonadales and unaffiliate group.Proteobacterium,Tetrasphaera elongate and Gemmatimonas aurantiaca may act important roles in phosphorus removal.With little amount as known glycogen accumulating organisms,Candidatus Competibacter phosphatis still at accumulating-phase had limited effect on microbial community structure.When climax community was obtained,dominant microbes were 14 OTUs.Microbes in a large amount were uncultured bacterium Thauera sp.,uncultured γ-Proteobacterium and Tetrasphaera elongata. | WANG Xiuheng,ZHANG Kun,REN Nanqi,LI Nan,REN Lijiao State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology,Harbin 150090,China. | 2009 | Journal of Environmental Sciences2009，21，2： | 17 |
| 3 | Levels and distribution of brominated flame retardants in the soil of Harbin in China显示文摘This study reports the presence of brominated flame retardants in the topsoil in and around Harbin, a city in northeastern China. Samples of soil were collected from 17 locations in 2006, and the levels of 9 polybrominated diphenylethers (PBDEs 17, 28, 47, 66, 99, 100, 153, 154, and 183) ranged from 2.45 to 55.9 pg/g dry weight (dw) with a mean of 26.3 pg/g dw. These levels are very low comparing with those for some cities in Europe and USA. BDE 209 and hexabromocyclododecane were the two dominant congeners, with mean concentrations of 520 pg/g dw and 1750 pg/g dw, respectively. The concentrations of the total nine PBDE congeners clearly decreased from urban areas to background, but the compositions of individual congeners differed. Proportions of heavier congeners decreased while those of lighter congeners increased, along urban-rural-background transect, providing evidence for an urban fractionation effect. Correlation analysis indicated similar sources for PBDEs, hexabromocyclododecane, and 1,2-bis(2,4,6-tribromophenoxy)-ethane from urban areas but pentabromoethylbenzene was probably present due to long-range atmospheric transport. Principal component analysis was used to determine the characteristics of the relationships among these brominated flame retardants in the field. | WANG Xu REN Nanqi QI Hong MA Wanli LI Yifan | 2009 | Journal of Environmental Sciences2009，21，11： | 15 |
| 4 | Bulking sludge for PHA production:Energy saving and comparative storage capacity with well-settled sludge显示文摘Two acetate-fed sequencing batch reactors(SBR) were operated under an aerobic dynamic feeding(ADF) model(SBR #2) and with anaerobic phase before aerobic phase(SBR #1) to select mixed cultures with a high polyhydroxyalkanoates(PHA) storage response.Although kinetic selection based on storage response should bring about a predominance of floc-formers,a bulking sludge with storage response comparable to well-settled sludge was steadily established.An anaerobic phase was introduced before the aerobic phase in the ADF model to improve the sludge settleability(SBR #1),however,due to the consequent increased feast/famine ratio,the performance of SBR #1,in terms of both the maximum PHB(polyhydroxybutyrate) cell content and PHB,was lower than that of SBR #2.SBR #2 gradually reached a steady state while SBR #1 failed suddenly after 50 days of operation.The maximum specific substrate uptake rate and storage rate for the selected bulking sludge were 0.4 Cmol Ac/(Cmol X·hr) and 0.18 Cmol Ac/(Cmol PHB·hr),respectively,resulting a yield of 0.45 Cmol PHB/(Cmol Ac) in SBR #2 in the culture enrichment phase.A maximum PHB content of 53% of total suspended solids and PHB storage rate of 1.36 Cmol Ac/(Cmol PHB·hr) was achieved at 10.2 hr in batch accumulation tests under nitrogen starvation.The results indicated that it was feasible to utilize filamentous bacteria to accumulate PHA with a rate comparable to well-settled sludge.Furthermore,the lower dissolved oxygen demand of filamentous bacteria would save energy required for aeration in the culture enrichment stage. | Qinxue Wen Zhiqiang Chen Changyong Wang Nanqi Ren | 2012 | Journal of Environmental Sciences2012，24，10： | 15 |
| 5 | Levels, distributions, and source identification of organochlorine pesticides in the topsoils in Northeastern China显示文摘Seventeen topsoil samples (9 urban, 4 suburban, 3 rural and 1 background) were collected in/around Harbin, a typical city in northeast of China, to measure concentration levels of organocholrine pesticides (OCPs) in topsoil of Northeastern China in 2006. Hexachlorohexanes (HCH), dichlorodiphenyltrichloroe thane (DDT), and hexachlorobenzene (HCB) were detected in soil samples with mean concentrations (in pg/g dry weight (dw)) of 7120, 5425, and 1039, respectively. The mean concentrations for other OCPs were very low, 4.8 pg/g dw for chlordane and 3.3 pg/g dw for endosulfan. Source identification analysis reveals that all OCPs found in soil samples were due to historical use of these chemicals or from other source regions through long- and short-range atmospheric transport. DDT was mainly used in the rural sites, whereas the sources of HCB, chlordane and endosulfan were mainly in the urban area. HCH was found almost equally in both urban and rural area. Soil concentrations of all detected OCPs, except HCHs, in and around Harbin were much lower than those in the southeast of China, which is expected since the use of these OCPs in the former was much lower than that in the latter, however higher HCH concentrations in and around Harbin than those found in most places of the Southeast China is not expected. It is suggested that high HCH concentration in soil of Northeast China was most likely due to long-range atmospheric transport (LRAT) from Southeast China and the cold condensation process. | WANG Xu REN Nanqi QI Hong MA Wanli LI Yifan | 2009 | Journal of Environmental Sciences2009，21，10： | 14 |
| 6 | Microbial community structure in an integrated A/O reactor treating diluted livestock wastewater during start-up period显示文摘In order to investigate the correlation between reactor performance and the microorganisms,an integrated A/O reactor was operated for 72 days to treat diluted livestock wastewater.Chemical oxygen demand (COD) removal efficiency increased from 79% to 94%,with total nitrogen (TN) removal efficiency from 37% to 50% (HRT 7.4 hr) when the influent COD and TN were ca.1500 mg/L and 95 mg/L,respectively,and the outlet COD concentration was less than 100 mg/L at the end.Microbial community was monitored during start-up period by denaturing gradient gel electrophoresis (DGGE) based on 16S rRNA gene.DGGE profiles showed that microbial community had changed significantly during the start-up and these shifts were in accordance with the reactor performance.UPGMA clustering analysis showed that 14 anaerobic samples fell into five main groups and so did the aerobic ones,but the grouping patterns were different.Phylogenetic analysis indicated that microbial populations in the anaerobic compartment belonged to Firmicutes,Proteobacteria,Chloroflexi and Bacteroidetes,while Proteobacteria,Bacteroidetes,Firmicutes,Verrucomicrobiae and Nitrospira were present in the aerobic compartment.In the anaerobic compartment,more fermentative and acetogenic bacteria were detected during the start-up while denitrifying bacteria faded away.Two functional populations such as Nitrospira defluvii and Dechloromonas denitrificans were observed when nitrogen removal was high,indicating that simultaneous nitrification and denitrification occurred in the aerobic compartment. | Lijiao Ren,Yining Wu,Nanqi Ren,Kun Zhang,Defeng Xing State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology,Harbin 150090,China. | 2010 | Journal of Environmental Sciences2010，22，5： | 14 |
| 7 | Influence of temperature on the characteristics of aerobic granulation in sequencing batch airlift reactors显示文摘Aerobic granular sludge was cultivated in sequencing batch airlift reactors(SBAR) at 25,30,and 35°C,respectively.The effect of temperature on the granules characteristics was analyzed and the microbial community structures of the granules were probed using scanning electron microscope(SEM) and polymerase chain reaction-denaturing gradient gel electrophoresis(PCR-DGGE).The results showed that 30°C is optimum for matured granule cultivation,where the granules had a more compact structure,better settling ability and higher bioactivity,the oxygen utilization rate(OUR) reached 1.14 mg O2/(g MLVSS.min) with COD removal rate of 97% and TP removal rate of 75%.The removal effciency of NH3-N increased from 68.5% to 87.5% along with the temperature increment from 25 to 35°C.The DGGE profiles revealed that the microbial community structure at 25°C showed the least similarity with those at other temperatures.The sequencing results indicated that the majority of dominant microbes belonged to Actinobacteria and Proteobacterium.Thermomonas sp.,Ottowia sp.and Curtobacterium ammoniigenes might play important roles at different temperatures,respectively. | SONG Zhiwei REN Nanqi ZHANG Kun TONG Longyan | 2009 | Journal of Environmental Sciences2009，21，3： | 13 |
| 8 | Biodegradation of phenol and m-cresol by mutated Candida tropicalis显示文摘The phenol and m-cresol biodegradations were studied using the mutant strain CTM 2 obtained by the He-Ne laser irradiation on wild-type Candida tropicalis.The results showed that C.tropicalis exhibited the increased capacity of phenolic compounds degradation after laser irradiation.It could degrade 2600 mg/L phenol and 300 mg/L m-cresol by 5% inoculum concentration,respectively.In the dual-substrate biodegradation system,0-500 mg/L phenol could accelerate m-cresol biodegradation,and 300 mg/L m-cresol could be completely utilized within 46 hr at the presence of 350 mg/L phenol.Besides,the maximum biodegradation of m-cresol could reach 350 mg/L with 80 mg/L phenol within 61 hr.Obviously,phenol,as a growth substrate,could promote CTM 2 to degrade m-cresol,and was always preferentially utilized as carbon source.Comparatively,low-concentration m-cresol could result in a great inhibition on phenol degradation.In addition,the kinetic behaviors of cell growth and substrate biodegradation were described by kinetic model proposed in our laboratory. | Yan Jiang Xun Cai Di Wu Nanqi Ren | 2010 | Journal of Environmental Sciences2010，22，4： | 10 |
| 9 | Effect of temperature switchover on the degradation of antibiotic chloramphenicol by biocathode bioelectrochemical system显示文摘Exposure to chloramphenicol(CAP),a chlorinated nitroaromatic antibiotic,can induce CAP-resistant bacteria/genes in diverse environments. A biocathode bioelectrochemical system(BES) was applied to reduce CAP under switched operational temperatures.When switching from 25 to 10°C,the CAP reduction rate(kCAP) and the maximum amount of the dechlorinated reduced amine product(AMCl,with no antibacterial activity) by the biocathode communities were both markedly decreased. The acetate and ethanol yield from cathodophilic microbial glucose fermentation(with release of electrons) was also reduced. Formation of the product AMCl was enhanced by the biocathode dechloridation reaction compared with that produced from pure electrochemical or microbial dechloridation processes. The electrochemical and morphological analyses of cathode biofilms demonstrated that some cathodophilic microbes could adapt to low temperature and play a key role in CAP degradation. The resilient biocathode BES has a potential for the treatment of CAP-containing wastewater in temperature fluctuating environments. | Deyong Kong Bin Liang Duu-Jong Lee Aijie Wang Nanqi Ren | 2014 | Journal of Environmental Sciences2014，26，8： | 10 |
| 10 | Properties and coagulation mechanisms of polyferric silicate sulfate with high concentration显示文摘有高集中的 Polyferric 硅酸盐硫酸盐(PFSS ) 被准备用 composite-poly 方法。这新建筑群的凝结性质和机制用 TEM 被探查, Fe-Ferron 预定了建筑群比色的方法,和红外线的光谱方法。结果证明 polyferric 硅酸盐硫酸盐的絮凝的效果优于 polyferric 硫酸盐(PFS ) ,当当 Si/Fe 鼹鼠比率根据它 PFSS 的宏观结构是 0.75 时,最佳凝结效果能被获得。根据 Fe-Ferron 预定了建筑群比色的方法, Si 种类主要是原文如此,而, Fe 种类在 copolymerization 系统是 Fea 和 Fec。红外线的系列显示这些新凝聚剂的结构被聚合物形成,主要由 olation,它与 M 的 polyferric 硫酸盐,和颤动不同哦约 1100 厘米的 M ? 1,也证明了那是在那里存在的 Fe 哦在一些形式的 Fe 和它的聚合物。 | SONG Zhiwei REN Nanqi | 2008 | Journal of Environmental Sciences2008，20，2： | 9 |
| 11 | Denitrification and phosphorus uptake by DPAOs using nitrite as an electron acceptor by step-feed strategies显示文摘把亚硝酸根用作一个电子领受人的从的磷积累有机体(DPAO ) 能减少更多的精力。然而,亚硝酸根被报导了在从上有抑制磷移动。在这研究,步喂策略被建议完成低亚硝酸根集中,它能避免或减轻亚硝酸根抑制。结果证明那 denitrification 率,磷举起率和到亚硝酸根的磷 uptaken 的比率从(缺氧的 P/N 比率) 当亚硝酸根集中是 15 mg 时。 | Bin MA Shuying WANG Guibing ZHU Shijian GE Junmin WANG Nanqi Ren Yongzhen PENG | 2013 | Frontiers of Environmental Science & Engineering2013，7，2： | 8 |
| 12 | The start-up of biohydrogen-producing process by bioaugmentation in the EGSB reactor显示文摘 | 王相晶 Ren Nanqi Xiang Wensheng Guo Wanqian | 2006 | High Technology Letters2006，12，3： | 5 |
| 13 | Partial Characteristics of Hydrogen Production by Fermentative Hydrogen-producing Bacterial Strain B49显示文摘To investigate the characteristics of hydrogen production by a novel fermentative hydrogen-producing bacterial strain B49 (AF481148 in EMBL), batch experiments are conducted under different conditions. Hydrogen production has a correlation with cell growth and the consumption of glucose and soluble protein. The optimum pH for cell growth is 4.5±0.15. At acidic pH 4.0±0.15, the bacteria has the maximum accumulated hydrogen volume of 2382 ml/L culture and the maximum hydrogen evolution rate of 339.9 ml/L culture·h with 1% glucose. The optimum temperature for cell growth and hydrogen production is 35℃. In addition, fermentative hydrogen-producing bacterial strain B49 can generate hydrogen from the decomposition of other organic substrates such as wheat, soybean, corn, and potato. Moreover, it can also produce hydrogen from molasses wastewater and brewage wastewater, and hydrogen yields are 137.9 ml H 2/g COD and 49.9 ml H 2/g COD, respectively. | 王相晶 Ren Nanqi Xiang Wensheng Lin Ming Guo Wanqian | 2003 | High Technology Letters2003，9，3： | 5 |
| 14 | Monitoring of microbial community structure and succession in the biohydrogen production reactor by denaturing gradient gel electrophoresis(DGGE)显示文摘To study the structure of microbial communities in the biological hydrogen produc- tion reactor and determine the ecological function of hydrogen producing bacteria, anaerobic sludge was obtained from the continuous stirred tank reactor (CSTR) in different periods of time, and the diversity and dynamics of microbial communities were investigated by denaturing gra- dient gel electrophoresis (DGGE). The results of DGGE demonstrated that an obvious shift of microbial population happened from the beginning of star-up to the 28th day, and the ethanol type fermentation was established. After 28 days the structure of microbial community became stable, and the climax community was formed. Comparative analysis of 16S rDNA sequences from reamplifying and sequencing the prominent bands indicated that the dominant population belonged to low G+C Gram-positive bacteria (Clostridium sp. and Ethanologenbacterium sp.), β- proteobacteria (Acidovorax sp.), γ-proteobacteria (Kluyvera sp.), Bacteroides (uncultured bacte- rium SJA-168), and Spirochaetes (uncultured eubacterium E1-K13), respectively. The hydrogen production rate increased obviously with the increase of Ethanologenbacterium sp., Clostridium sp. and uncultured Spirochaetes after 21 days, meanwhile the succession of ethanol type fer- mentation was formed. Throughout the succession the microbial diversity increased however it decreased after 21 days. Some types of Clostridium sp. Acidovorax sp., Kluyvera sp., and Bac- teroides were dominant populations during all periods of time. These special populations were essential for the construction of climax community. Hydrogen production efficiency was de- pendent on both hydrogen producing bacteria and other populations. It implied that the co- metabolism of microbial community played a great role of biohydrogen production in the reactors. | XING Defeng REN Nanqi GONG Manli LI Jianzheng LI Qiubo | 2005 | Science China(Life Sciences)2005，48，2： | 5 |
| 15 | Effects of Iron on Hydrogen-producing Capacity, Hydrogenase and NADH-fd Reductase Activities of a Fermentative Hydrogen-producing Bacterial Strain B49显示文摘Iron plays an important role in hydrogen production, cell growth, hydrogenase and NADH-fd reductase activities of hydrogen-producing bacterial strain B49 (AF481148 in EMBL). At the end of fermentation from 10 g/L glucose, for the culture containing 10 mg/L FeSO4*7H2O the cell growth in terms of optical density (OD) at 600nm was 1.13, the ratio of ethanol amount (mg/L) to acetate amount (mg/L) was 1.55, and the accumulated hydrogen volume was 1816.3 ml H2/L culture; whereas for the culture of 80 mg/L FeSO4*7H2O OD600nm was increased to 1.34, the accumulated hydrogen volume was increased to 2360.5 ml H2/L culture, and the ratio of ethanol amount (mg/L) to acetate amount (mg/L) decreased to 1.31. Moreover, the iron addition to the medium at different fermentation time could affect hydrogen-producing ability. However, the later the addition time of FeSO4*7H2O was postponed, the less the effect on hydrogen evolution was. In the course of fermentation, the specific activities of hydrogenase and NADH-fd reductase of hydrogen-producing bacterial strain B49 decreased with the consumption of iron. | 王相晶 Ren Nanqi Xiang Wensheng | 2004 | High Technology Letters2004，10，4： | 5 |
| 16 | Towards a better hydraulic cleaning strategy for ultrafiltration membrane fouling by humic acid: Effect of backwash water composition显示文摘As a routine measurement to alleviate membrane fouling, hydraulic cleaning is of great significance for the steady operation of ultrafiltration(UF) systems in water treatment processes. In this work, a comparative study was performed to investigate the effects of the composition of backwash water on the hydraulic cleaning performance of UF membranes fouled by humic acid(HA). Various types of backwash water, including UF permeate, Milli-Q water, Na Cl solution, CaCl_2 solution and HA solution, were compared in terms of hydraulically irreversible fouling index, total surface tension and residual HA. The results indicated that Milli-Q water backwash was superior to UF permeate backwash in cleaning HA-fouled membranes, and the backwash water containing Na+or HA outperformed Milli-Q water in alleviating HA fouling. On the contrary, the presence of Ca^(2+) in backwash water significantly decreased the backwash efficiency. Moreover, Ca^(2+) played an important role in foulant removal, and the residual HA content closely related to the residual Ca^(2+) content.Mechanism analysis suggested that the backwash process may involve fouling layer swelling, ion exchange, electric double layer release and competitive complexation. Ion exchange and competitive complexation played significant roles in the efficient hydraulic cleaning associated with Na+and HA, respectively. | Haiqing Chang Heng Liang Fangshu Qu Jun Ma Nanqi Ren Guibai Li | 2016 | Journal of Environmental Sciences2016，28，5： | 4 |
| 17 | Recent advances in fermentative biohydrogen production显示文摘Hydrogen energy, as a kind of clean energy with great potential, has been a hotspot for study worldwide. Based on the recent research on biohydrogen production, this paper gives a brief review on the following aspects: fermentative hydrogen production process and the engineering control statagy, key factors affecting the effciency of hydrogen production, such as substrates, cysteine, metal ions, anaerobic fermentation terminal products, and formic acid and ammonia. Moreover, anaerobic fermentative hydrogen-producing strain and reg- ulation and control of enzyme gene in fermentative hydrogen production are also discussed. Finally, the prospect of anaerobic fermen- tative biohydrogen production is proposed in three study areas, namely developing new techniques for breeding hydrogen-producing bacteria, exploitations of more strains and gene resources, and intensifying the application of microbial molecular breeding in hydrogen production. | Xuemei Liu Nanqi Ren Funan Song Chuanping Yang Aijie Wang | 2008 | Progress in Natural Science:Materials International2008，18，3： | 4 |
| 18 | Short-term effect of temperature variation on the competition between PAOs and GAOs during acclimation period of an EBPR system显示文摘Sequencing batch reactor(SBR)for enhanced biological phosphorus removal(EBPR)processes was used to investigate the impact of the temperature shock on the competition between phosphorus-accumulating organisms(PAOs)and glycogen accumulating organisms(GAOs)in start-up stage.During the 34 days operation,SBR was set with temperature variation(0-5 d,22±1℃;6-13 d,29±1℃;14-34 d,14±1℃).PAOs and GAOs were analyzed by fluorescent in situ hybridization(FISH),and intracellular polyphosphate granules were stained by Neisser-stain.The results showed that the influence of temperature shock on PAOs’abundance was more serious than that on GAOs in the enriching process.Under sudden and substantially temperature variation,from 22±1℃ to 29±1℃ and then to 14±1℃,the domination of PAOs was deteriorated.After temperature shock,PAOs’competitive advantages at low temperature that concluded in other study did not appear in our study.As mesophilic,GAOs(indicated by Alphaproteobacteria and Gammaproteobacteria)were more temperature adaptive and better grew and took the domination at 14±1℃ in the end.In the competition process,organisms of tetrad forming organisms(TFOs)-like shape which were considered as typical GAOs,were observed.With the evidence of poly-P granules containing by Neisser-straining and result of FISH,these organisms of TFOs-like shape were better to be assumed as adaption state or a special self-protecting shape of PAOs. | Nanqi REN Han KANG Xiuheng WANG Nan LI | 2011 | Frontiers of Environmental Science & Engineering2011，5，2： | 4 |
| 19 | Sediment microbial fuel cell with floating biocathode for organic removal and energy recovery显示文摘 | Aijie WANG Haoyi CHENG Nanqi REN Dan CUI Na LIN Weimin WU | 2012 | Frontiers of Environmental Science & Engineering2012，6，4： | 4 |
| 20 | Co-application of energy uncoupling and ultrafiltration in sludge treatment:Evaluations of sludge reduction,supernatant recovery and membrane fouling control显示文摘Energy uncoupling is often used for sludge reduction because it is easy to operate and does not require a significant amount of extra equipments(i.e.no additional tank required).However,over time the supernatant extracted using this method can deteriorate,ultimately requiring further treatment.The purpose of this study was to determine the effect of using a low-pressure ultrafiltration membrane process for sludge water recovery after the sludge had undergone an energy uncoupling treatment(using 3,3’,4’,5-tetrachlorosalicylanilide(TCS)).Energy uncoupling was found to break apart sludge floe by reducing extracellular polymeric substances(EPS)and adenosine triphosphate(ATP)content.Analysis of supernatant indicated that when energy uncoupling and membrane filtration were coapplied and the TCS dosage was below 30 mg/L,there was no significant deterioration in organic component removal.However,ammonia and phosphate concentrations were found to increase as the concentration of TCS added increased.Additionally,due to low sludge concentrations and EPS contents,addition of 30-60 mg/L TCS during sludge reduction increased the permeate flux(two times higher than the control)and decreased the hydraulic reversible and cake layer resistances.In contrast,high dosage of TCS aggravated membrane fouling by forming compact fouling layers.In general,this study found that the co-application of energy uncoupling and membrane filtration processes represents an effective alternative method for simultaneous sludge reduction and sludge supernatant recovery. | An Ding Yingxue Zhao Zhongsen Yan Langming Bai Haiyang Yang Heng Liang Guibai Li Nanqi Ren | 2020 | Frontiers of Environmental Science & Engineering2020，14，4： | 3 |
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