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Evaluation of drinking water treatment combined filter backwash water recycling technology based on comet and micronucleus assay

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Journal of Environmental Sciences 2016年第4期28卷 61-70页

作者： Ting Chen Yongpeng Xu Zhiquan Liu Shijun Zhu Wenxin Shi fuyi cui State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology School of Municipal and Environmental Engineering Harbin Institute of Technology

Based on the fact that recycling of combined filter backwash water（CFBW）directly to drinking water treatment plants（WTP）is considered to be a feasible method to enhance pollutant removal efficiency,we were motivated to evaluate the genotoxicity of water samples from two pilot-scale drinking water treatment systems,one with recycling of combined backwash water,the other one with a conventional process.An integrated approach of the comet and micronucleus（MN）assays was used with zebrafish（Danio rerio）to investigate the water genotoxicity in this study.The total organic carbon（TOC）,dissolved organic carbon（DOC）,and trihalomethane formation potential（THMFP）,of the recycling process were lower than that of the conventional process.All the results showed that there was no statistically significant difference（P〉0.05）between the conventional and recycling processes,and indicated that the genotoxicity of water samples from the recycling process did not accumulate in 15 day continuous recycling trial.It was worth noting that there was correlation between the concentrations of TOC,DOC,UV（254）,and THMFPs in water and the DNA damage score,with corresponding R^2 values of 0.68,0.63,0.28,and 0.64.Nevertheless,both DNA strand breaks and MN frequency of all water samples after disinfection were higher than that of water samples from the two treatment units,which meant that the disinfection by-products（DBPs）formed by disinfection could increase the DNA damage.Both the comet and MN tests suggest that the recycling process did not increase the genotoxicity risk,compared to the traditional process.

关键词： Combined filter backwash water Drinking water treatment Genotoxicity Comet assay Micronucleus

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Effect of filter-feeding fish silver carp on phytoplankton species and size distribution in surface water:A field study in water works

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Journal of Environmental Sciences 2010年第2期22卷 161-167页

作者： Hua Ma fuyi cui Zhiquan Liu Zhenqiang Fan Wenjie He Peijun Yin State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology Harbin 150090 China Tianjin Waterworks Group Co. Ltd. Tianjin 300040 China

Silver carp were introduced into the pre-sedimentation pond to control excessive phytoplankton in raw water. The effectiveness of the filter-feeding silver carp on phytoplankton control and the effect of silver carp on phytoplankton community were investigated. The results showed that Microcystis could be effectively removed by silver carp stocked in the pre-sedimentation pond, and simultaneously, the concentration of single-cell phytoplankton increased obviously. The difference in phytoplankton species and single- cell phytoplankton size between in the water and in the gut of silver carp indicated that phytoplankton smaller than 5 μm, such as Chamydomonas and Platymonas, were almost not be filtered by silver carp, phytoplankton with the size between 5 and 20μm could be partly filtered, and large size phytoplankton, mainly colony-forming Microcystis could be filtered almost completely. These filter- feeding characteristics directly caused the phytoplankton size distribution biased toward miniaturization. Therefore, this biological treatment using silver carp could be applied only to deal with groups of Microcystis-dominated eutrophic water, and was not appropriate in water bodies where single-cell micro phytoplankton were dominant. Especially when silver carp are used in water treatment, a cautious attitude should be taken based on the evaluation of phytoplankton biomass and species structure features in raw water.

关键词： phytoplankton control silver carp Microcystis single-cell micro phytoplankton

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Application of ultra-sonication, acid precipitation and membrane filtration for co-recovery of protein and humic acid from sewage sludge

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Frontiers of Environmental Science & Engineering 2016年第2期10卷 327-335页

作者： Liangliang WEI Kun WANG Xiangjuan KONG Guangyi LIU Shuang cui Qingliang ZHAO fuyi cui Key Laboratory of Songliao Aquatic Environment (Ministry of Education) Jilin Jianzhu University Changchun 130118 China School of Mu-nicipal & Environmental Engineering Harbin Institute of Technology Harbin 150090 China Center of Science & Technology of Construction of the Ministry of Housing and Urban Rural Development of E R. China Beijing 100835 China Procter & Gamble Company Guangzhou 510620 China

一个新奇方法被用于共同恢复从为液体化肥和动物的除去的污水污泥的蛋白质和腐殖的酸喂。在污水污泥的蛋白质首先用 ultrasonication 和酸降水的过程被提取，然后腐殖的酸经由膜过滤被恢复。抽取效率是 125.9 mg 腐殖的酸 ?????????????... 详细信息

一个新奇方法被用于共同恢复从为液体化肥和动物的除去的污水污泥的蛋白质和腐殖的酸喂。在污水污泥的蛋白质首先用 ultrasonication 和酸降水的过程被提取，然后腐殖的酸经由膜过滤被恢复。抽取效率是 125.9 mg 腐殖的酸 ???????????????????????? 卓吗？

关键词：天然蛋白质脱水污泥超声应用腐殖酸可回收酸沉淀膜过滤提取效率

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Characterization of the adsorption behavior of aqueous cadmium on nanozero-valent iron based on orthogonal experiment and surface complexation modeling

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Chinese Journal of Chemical Engineering 2016年第9期24卷 1270-1274页

作者： Dongmei Liu Huan Tang Ying Zhao fuyi cui Jing Lu State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology School of Municipal and Environmental Engineering Harbin Institute of Technology

Polyvinylpyrrolidone K-30(PVP) was introduced into the preparation of nanozero-valent iron(n ZVI) and the traditional liquid-phase reduction was improved. The introduction of PVP simplified the traditional method.The n ZVI prepared with this new approach showed excellent surface characters and high performance on the removal of cadmium. TEM results showed that the aggregates of n ZVI can reach to several micrometers in length but less than 100 nm in diameter. The iron particles that were enclosed by a layer of oxide film that is less than10 nm, demonstrated that the n ZVI possesses a core–shell structure. BET results indicate that the specific surface area of the n ZVI was 20.3159 m^2g^(-1). A three factor and three level orthogonal experiment was employed to find out the dominant factor that affects the removal rate of cadmium by n ZVI. Based on the range values, the prominence order of each factor was: initial p H of the solution N initial concentration of cadmium N dosage of n ZVI, the range was 96.453, 3.294 and 1.747, respectively. A simulation was performed under the same condition and a same conclusion was derived, this consistence confirmed the validity of the conclusion that p H is the most significant factor that affects the adsorption efficiency.

关键词：镉 Nanozero-valent 铁合成 Polyvinylpyrrolidone 直角的实验传播层模型

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Effect of Dissolved Organic Matter on Titanium Dioxide Nanoparticles in Aquatic Environment:Molecular Weight Fractions

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Journal of Harbin Institute of Technology(New Series) 2020年第5期27卷 38-48页

作者： Xiaonan Yang Dongmei Liu fuyi cui School of Environment Harbin Institute of TechnologyHarbin 150090China College of Urban Construction and Environmental Engineering Chongqing UniversityChongqing 400044China

At present,a growing number of consumer products contain engineered nanoparticle TiO2(nano⁃TiO2),which has resulted in the consequences of nano⁃TiO2 entering the aquatic environment directly or indirectly at some stage.The fate of nano⁃TiO2 in the aquatic environment has become the key factor which affects its safety application and nanoecotoxicology.This paper aims to investigate how the dissolved organic matters(DOM),especially the molecular weight fractions in the aquatic environment,affect the aggregation,stability,and fate of nano⁃TiO2,and the interaction mechanism of DOM and nano⁃TiO2.Results of dynamic light scattering(DLS)showed that the molecular weight of DOM molecules caused different aggregation rates of nano⁃TiO2 in aqueous solution.Fourier Transform infrared spectroscopy(FTIR)results indicated the molecular structure is characteristics of DOM fractions and the mechanisms of bonds formation between DOM and nano⁃TiO2.Results of three⁃dimensional excitation⁃emission matrices(3D⁃EEM)confirmed the FTIR results and implied the increase of the stability of theπ-πconjugated system in the presence of DOM.In addition,low molecular weight of DOM fractions appeared to show more affinity with nano⁃TiO2 than high molecular weight fractions.

关键词： titanium dioxide nanoparticles dissolved organic matter different molecular weight organics

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Impact of Untreated Sedimentation Tank Sludge Water Recycle on Water Quality During Treatment of Low Turbidity Water

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Journal of Harbin Institute of Technology(New Series) 2015年第4期22卷 79-86页

作者： Ronggang Xu Yongpeng Xu fuyi cui Li He Dong Wang Qingfeng Su School of Municipal & Environmental Engineering Harbin Institute of Technology Ji'nan Municipal Engineering Design & Research Institute(Group) Co. Ltd National Engineer Research Center of Urban Water Resources Southwest Municipal Engineering Design & Research Institute of China China Urban Construction Design & Research Institute Co. Ltd

The overall purpose of this research is to examine the impact of untreated sedimentation tank sludge water( USTSW) recycle on water quality during treatment of low turbidity water in coagulation—sedimentation processes. 950 m L of raw water and different concentrations of 50 m L USTSW are injected into six 1 000 m L beakers without coagulant.The results indicate that USTSW characterized as accumulated suspended solids and organic matter has active ingredients,which possess the equivalent function of coagulant. The optimal blended water turbidity is in the range of 10-20 NTU,within which USTSW recycle achieves the highest save coagulant rate. The mechanism of strengthening coagulation effect when USTSW recycle mainly depends on the chemical effect and physical effect. What is more,through scanning electron microscopy( SEM),it is found that the floc structures with USTSW recycle are more compact than those without USTSW recycle. Besides,the water quality parameters of color,NH3-N,CODMn,UV254,total aluminum,total manganese when USTSW recycle is better than the raw water without recycle,indicating that USTSW recycle can improve water quality with strengthening coagulation effect.

关键词： untreated sedimentation tank sludge water recycle low turbidity optimal blended water turbidity water quality

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Three-dimensional porous photo-thermal fiber felt with salt-resistant property for high efficient solar distillation

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Chinese Chemical Letters 2021年第4期32卷 1442-1446页

作者： Jingjing Zhang Xueqing Luo Xiaoxin Zhang Ying Xu Hongbo Xu Jinlong Zuo Dongmei Liu fuyi cui Wei Wang State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150090China School of Chemistry and Chemical Engineering Harbin Institute of TechnologyHarbin 150090China Department of Environmental Engineering Harbin University of CommerceHarbin 150076China School of Ecology and Environment Zhengzhou UniversityZhengzhou 450000China

The urgent need for fresh water resource is a public issue facing the world.Solar distillation for seawater desalination is a promising freshwater production method.Interfacial solar evaporation systems based on 2 D photo-thermal membranes have been widely studied,but salt pollution is one of the main challenges for solar distillation.In order to solve this problem,a hydrophilic three-dimensional(3 D)porous photo-thermal fiber felt(PFF)was obtained by one-step method,through a simple polydopamine(PDA)coating method with hydrophobic graphite felt as a substrate.The PFF had a good evaporation rate of 1.48 kg m^(-2)h^(-1)and its corresponding light-vapor conversion efficiency reached 87.4%.In addition,the PFF exhibited an excellent salt-resistant ability when applied to photo-thermal evaporation of highsalinity seawater with 10 wt%NaCl,owing to its intrinsic 3 D macroporous structure for the migration circulation of salt ions.The development of the PFF offers a new route for the exploration of salt-re sistant photo-thermal materials and is promising for the practical application of solar distillation.

关键词： Solar distillation Photo-thermal evaporation Solar desalination Salt resistance Solar evaporation

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Feedback Between Influent Condition Heterogeneity and Diversity of Bacterial Community in Bioreactor at Low Substrate Concentration

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Journal of Harbin Institute of Technology(New Series) 2017年第6期24卷 60-66页

作者： Hui Feng Wei Wang Zhiwei Zhao Maoan Du fuyi cui Ruisha Shi State Key Laboratory of Urban Water Resource and Environment(SKLUWRE) School of Municipal and Environmental EngineeringHarbin Institute of TechnologyHarbin 150090China Department of National Defense Construction Planning and Environmental Engineering Logistical Engineering UniversityChongqing 401311China

In order to investigate the effect of influent condition heterogeneity on diversity of the bacterial community,the degree of microbial resolution and effluent quality,biological treatment of micro-polluted source water is proposed. Scanning Electron Microscopy( SEM) analysis reflects that influent conditions change the morphologies of biofilm. Denaturing Gradient Gel Electrophoresis( DGGE) analysis shows differences of H values are due to succession of functional bacterial communities. Microbial resolution values and species identifications reveal organic carbon is the main cause of community differentiation and bacterial migration.

关键词： bacterial community diversity bioreactor cluster analysis influent heterogeneity shannon index

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A Promising style of growth velocity model of green algae and diatoms in local lake area

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Chinese Journal Of Geochemistry 2006年第B8期25卷 162-163页

作者： Zhihong WANG fuyi cui Jie JIA Wenxuan CHEN Institution of Environmental Science South China University of Technology Guangzhou 510640 China School of Construction Guangdong University of Technology Guangzhou 511325 China School of Municipal and Environmental Engineering Harbm University of Technology Harbin 150001 China

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Removal of disinfection by-product formation potentials by biologically assisted GAC treatment

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High Technology Letters 2006年第1期12卷 91-96页

作者：安东 Li Weiguang cui fuyi Wang Rui School of Municipal ＆ Environmental Engineering Harbin Institute of Technology Harbin 150090 P.R. China Shanghai Waterworks Shibei Co. LTD Shanghai 200086 P.R. China

The object of this paper is to evaluate the removal of disinfection by-products formation potential by artificially intensified biological activated carbon (BAC) process which is developed on the basis of traditional ozone granular activated carbon (GAC). The results show that 23.1% of trihalomethane formation potential (THMFP) and 68% of haloacetic acid formation potential (HAAFP) can be removed by BAC, respectively. Under the same conditions, the removal rates of the same substances were 12.2% and 13-25% respectively only by GAC process. Compared with GAC, the high removal rates of the two formed potential substances were due to the increasing of bioactivity of the media and the synergistic capabilities of biological degradation cooperating with activated carbon adsorption of organic compounds. BAC process has some advantages such as long backwashing cycle time, low backwashing intensity and prolonged activated carbon lifetime, etc.

关键词：生物活性碳三卤甲烷水处理消毒 GAC处理

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