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Red soil for sediment capping to control the internal nutrient release under flow conditions

Frontiers of environmental Science & Engineering 2016年第6期10卷 63-71页

作者： Lei Xia Guo Liu Chunmei Chen Meiyan Wen Yangyang Gao State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of Technology Chengdu 610059 China Sichuan Provincial Environmental Protection Key Laboratory of Groundwater Pollution Prevention and Resource Security Chengdu University of Technology Chengdu 610059 China

Nitrogen （N） and phosphorus （P） released from the sediment to the surface water is a major source of water quality impairment. Therefore, inhibiting sediment nutrient release seems necessary. In this study, red soil （RS） was employed to control the nutrients released from a black-odorous river sediment under flow conditions. The N and P that were released were effectively controlled by RS capping. Continuous-flow incubations showed that the reduction efficiencies of total N （TN）, ammonium （NH4＋-N）, total P （TP） and soluble reactive P （SRP） of the overlying water by RS capping were 77%, 63%, 77% and 92%, respectively, and nitrification and denitrification occurred concurrently in the RS system. An increase in the water velocity coincided with a decrease in the nutrient release rate as a result of intensive water aeration.

关键词： Sediment Red soil capping Flow conditions Nitrogen Phosphorus

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Removal of fluorescence and ultraviolet absorbance of dissolved organic matter in reclaimed water by solar light

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Journal of environmental Sciences 2016年第5期28卷 118-127页

作者： Qianyuan Wu Chao Li Wenlong Wang Tao He Hongying Hu Ye Du Ting Wang Shenzhen Laboratory of Microorganism Application and risk Control Graduate School at Shenzhen Tsinghua UniversityShenzhen 518055 China Environmental Simulation and Pollution Control State Key Joint Laboratory School of Environment Tsinghua UniversityBeijing 100084 China State Environmental Protection Key Laboratory of Microorganism Application and Risk Control School of Environment Tsinghua UniversityBeijing 100084 China South China Institute of Environmental Science Ministry of Environmental Protection Guangzhou 510000 China

Storing reclaimed water in lakes is a widely used method of accommodating changes in the consumption of reclaimed water during wastewater reclamation and reuse. Solar light serves as an important function in degrading pollutants during storage, and its effect on dissolved organic matter（DOM） was investigated in this study. Solar light significantly decreased the UV_（254） absorbance and fluorescence（FLU） intensity of reclaimed ***, its effect on the dissolved organic carbon（DOC） value of reclaimed water was very limited. The decrease in the UV_（254） absorbance intensity and FLU excitation–emission matrix regional integration volume（FLU volume） of reclaimed water during solar light irradiation was fit with pseudo-first order reaction kinetics. The decrease of UV_（254） absorbance was much slower than that of the FLU volume. Ultraviolet light in solar light had a key role in decreasing the UV_（254） absorbance and FLU intensity during solar light irradiation. The light fluence-based removal kinetic constants of the UV_（254） and FLU intensity were independent of light intensity. The peaks of the UV_（254） absorbance and FLU intensity with an apparent molecular weight（AMW） of 100 Da to 2000 Da decreased after solar irradiation, whereas the DOC value of the major peaks did not significantly change.

关键词： Wastewater reclamation Fluorescence Ultraviolet absorbance Solar light irradiation

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Removal of *** Red 2 by low pressure UV/chlorine advanced oxidation

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Journal of environmental Sciences 2016年第3期28卷 227-234页

作者： Qianyuan Wu Yue Li Wenlong Wang Ting Wang Hongying Hu Environmental Simulation and Pollution Control State Key joint Laboratory School of EnvironmentTsinghua UniversityBeijing 100084China State Environmental Protection Key Laboratory of Microorganism Application and Risk Control(SMARC) School of EnvironmentTsinghua UniversityBeijing 100084China Shenzhen Laboratory of Microorganism Application and Risk Control Graduate School at ShenzhenTsinghua UniversityShenzhen 518055China

Azo dyes are commonly found as pollutants in wastewater from the textile industry,and can cause environmental problems because of their color and *** removal of a typical azo dye named *** Red 2（RR2） during low pressure ultraviolet（UV）/chlorine oxidation was investigated in this *** irradiation at 254 nm and addition of free chlorine provided much higher removal rates of RR2 and color than UV irradiation or chlorination *** the free chlorine dose enhanced the removal efficiency of RR2 and color by UV/chlorine *** performed with nitrobenzene（NB）or benzoic acid（BA） as scavengers showed that radicals（especially OH） formed during UV/chlorine oxidation are important in the RR2 *** of HCO_3^- and Cl^- to the RR2 solution did not inhibit the removal of RR2 during UV/chlorine oxidation.

关键词： Textile wastewater Azo dye Ultraviolet irradiation Chlorine Advanced oxidation process

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River Water Quality and its Relation with Air Quality: A Long-Term Case Study in a Remote and Pristine NW Italian Headwater Catchment

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环境核算与管理（英文） 2017年第1期5卷 35-47页

作者： Marco Casazza Franca Maraga Gengyuan Liu Massimiliano Lega Laura Turconi Sergio Ulgiati Department of Science and Technology University of Naples'Parthenope' Naples 81043 Italy National Research Council Department of Earth and Environment Research Institute for geo-hydrological protection (CNR-IRPI) Unit of Turin Italy State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Beijing Normal University Beijing 100875 China Beijing Engineering Research Center for Watershed Environmental Restoration & Integrated Ecological Regulation Beijing 100875 China Department of Science and Technology University of Naples'Parthenope' Naples 81043 Italy State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Beijing Normal University Beijing 100875 China Beijing Engineering Research Center for Watershed Environmental Restoration & Integrated Ecological Regulation Beijing 100875 China

This paper analyses the water quality characteristics of a remote and pristine basin,the Gallina small catchment,located in the Piemonte Region (NW Italy).In particular,the ion content of river water and precipitation are assessed for two distinct periods (October-December of years 1992 and 2011).These time frames are characterized by a change of air quality management rules for the study area which came into force after year ***,late Autunm months,which are considered in this study,are characterized by a peak of recorded precipitations in the area under ***,this is a period of the year where atmospheric emission intensity and distribution are greater with respect to Spring and *** chemical nature of the monitored water body was assessed through the use of Piper *** found evidence of erosional processes,which chemically altered the water compared to the quality of *** signature of air chemistry was also evident,through a shift to less sulphate,after the change of air quality regulations introduced in year *** presence of marine ions,in case of major weather perturbations,typical of the late Autumn in the monitored area,was *** fact was particularly evident for the month of November 2011,in association to a major flooding event occurred in the Piemonte *** presence of a minor ionic component,associated to rainfall waters,depending upon soil particle resuspension and transport was also ***,the prevailing origin of the measured ions was *** results show the importance of improved management actions,which should be taken in order to further reduce the trans-boundary atmospheric pollution,which constitutes a threat to water quality and a further element of indirect water pollution transfer across different areas.

关键词： Water quality Atmospheric deposition Air quality Pristine basin

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UV light tolerance and reactivation potential of tetracycline-resistant bacteria from secondary effluents of a wastewater treatment plant

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Journal of environmental Sciences 2016年第3期28卷 146-153页

作者： Jing-Jing Huang Jinying Xi Hong-Ying Hu Yi Li Sun-Qin Lu Fang Tang Yu-Chen Pang State Key Joint Laboratory of Environmental Simulation and Pollution Control State Environmental Protection Key Laboratory of Microorganism Application and Risk ControlSchool of EnvironmentTsinghua UniversityBeijing 100084China College of Environmental Science and Engineering Hohai UniversityNanjing 210098China China Power Engineering Consulting Group Co. LTD.Beijing 100120China

Tetracycline-resistant bacteria（TRB） are of concern as emerging microbial contaminants in reclaimed *** understand the effects of UV disinfection on TRB,both inactivation and reactivation profiles of TRB,as well as 16 tetracycline-resistant isolates from secondary effluent,were characterized in this *** inactivation ratio of TRB was significantly lower（3.0-log） than that of heterotrophic bacteria（〉4.0-log） in the secondary ***,the proportion of TRB significantly increased from 1.65%to 15.51%under20 mJ/cm^2 ultraviolet（UV） *** inactivation rates of tetracycline-resistant isolates ranged from 0.57/s to 1.04/s,of which tetracycline-resistant Enterobacter-1 was the most tolerant to UV *** reactivation of TRB,tetracycline-resistant isolated strains,as well as heterotrophic bacteria commonly occurred in the secondary effluent even after20 mJ/cm^2 UV *** colony forming ability of TRB and heterotrophic bacteria reached 3.2-log and 3.0-log under 20 mJ/cm^2 UV exposure after 22 hr *** final inactivation ratio of tetracycline-resistant Enterobacter-1 was 1.18-log under 20 mJ/cm^2 UV exposure after 22 hr incubation,which is similar to those of TRB（1.18-log） and heterotrophic bacteria（1.19-log）.The increased proportion of TRB and the reactivation of tetracycline-resistant enterobacteria in reclaimed water could induce a microbial health risk during wastewater reuse.

关键词： UV disinfection Tetracycline-resistant bacteria Inactivation Dark repair Reclaimed water

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Degradation of methylene blue in micro-bubbles activated sodium persulfate system

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IOP Conference Series: Materials Science and Engineering 2018年第1期397卷

作者： Lei Wang Tongtong Li Hui Liu Ningqing Lv Beidou Xi Jinsheng Wang Yuanyuan Xie Ying Zhang State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution Chinese Research Academy of Environmental Sciences Beijing 100012 P. R. China Shenzhen Long Cheng High-tech Environmental protections Co. Ltd. Shenzhen Guangdong 518063

To better understand the promoting effect of the activation process, the performance of micro-bubbles for sodium persulfate activation was evaluated in this study. The degradation rate reached to 91.3% at 90th min in the micro-bubbles activated reactor (MAR), whereas reached to 85.7% at 250th min in the high temperature activated reactor (HTAR). Based on the fitted models, it can be indicated that the reaction rate constant was 2.45 times in the micro-bubbles activated reactor than that in the high temperature activated reactor. It can be concluded that micro-bubbles can effectively strengthen the activation process of sodium persulfate.

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The removal of phosphate in rural domestic wastewater with a SBBR by micro-bubble technology

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IOP Conference Series: Materials Science and Engineering 2018年第1期397卷

作者： Ningqing Lv Tongtong Li Hui Liu Yuanyuan Xie Beidou Xi Jinsheng Wang Lei Wang Ying Zhang State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution Chinese Research Academy of Environmental Sciences Beijing 100012 P. R. China Shenzhen Long Cheng High-tech Environmental protections Co. Ltd. Shenzhen Guangdong 518063

Because of the large content of organic matter as well as nitrogen, the competition between phosphate accumulating organisms (PAOs) and glycogen accumulating organisms (GAOs) was serious in wastewater. This phenomenon led to biological phosphate removal in a SBBR with micro-bubble technology was not quite effective. Meanwhile, it can be concluded that the high dissolved oxygen (DO), ammonia nitrogen(NH4+), sludge solubilization affect the biological phosphate removal seriously. This paper was aimed to provide some information's to improve the phosphate removal in the next step.

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Attribution of PM_(2.5) exposure in Beijing-Tianjin-Hebei region to emissions:implication to control strategies

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Science Bulletin 2017年第13期62卷 957-964页

作者： Xin Li Qiang Zhang Yang Zhang Lin Zhang Yuxuan Wang Qianqian Zhang Meng Li Yixuan Zheng Guannan Geng Timothy J.Wallington Weijian Han Wei Shen Kebin He Ministry of Education Key Laboratory for Earth System Modeling Department of Earth System ScienceTsinghua University Department of Marine Earthand Atmospheric SciencesNorth Carolina State University Collaborative Innovation Center for Regional Environmental Quality Laboratory for Climate and Ocean-Atmosphere Sciences Department of Atmospheric and Oceanic SciencesSchool of PhysicsPeking University Department of Marine Sciences Texas A&M University at Galveston Department of Atmospheric Sciences Texas A&M UniversityCollege Station National Satellite Meteorological Center China Meteorological Administration Research and Advanced Engineering Ford Motor Company Asia Pacific Research Ford Motor Company State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua University

The Beijing-Tianjin-Hebei （BTH） region is one of the most heavily polluted regions in China, with both high PM2.5 concentrations and a high population density. A quantitative source-receptor relationship can provide valuable insights that can inform effective emission control strategies. Both source appor- tionment （SA） and source sensitivity （SS） can provide such information from different perspectives. In this study, both methods are applied in northern China to identify the most significant emission cate- gories and source regions for PMz5 exposure in BTH in 2013. Despite their differences, both models show similar distribution patterns for population and simulated PM2.5 concentrations, resulting in overall high PM2.5 exposure values （approximately 110 Ixg/m3） and particularly high exposure values during the win- ter （approximately 200 ktg/m3）. Both methods show that local emissions play a dominant role （70%）, with some contribution from surrounding provinces （e.g., Shandong） via regional transport. The two methods also agree on the priority of local emission controls： both identify industrial, residential, and agricultural emissions as the top three categories that should be controlled locally. In addition, the effect of control- ling agricultural ammonia emissions is approximately doubled when the co-benefits of reducing nitrate are considered. The synthesis of SA and SS for addressing specific categories of emissions provides a quantitative basis for the development of emission control strategies and policies for controlling PM2.5 in China.

关键词： PM2.5 exposureSource apportionmentSource sensitivitycontrol priorityChina

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Correction: Impact of water quality parameters on bacteria inactivation by low-voltage electroporation: mechanism and control

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environmental Science: Water Research & Technology 2018年第6期4卷 882-882页

作者： Zheng-Yang Huo Guo-Qiang Li Tong Yu Yun Lu Hao Sun Yin-Hu Wu Cecilia Yu Xing Xie Hong-Ying Hu Environmental Simulation and Pollution Control State Key Joint Laboratory State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC) School of Environment Tsinghua University Beijing 100084 PR China School of Civil and Environmental Engineering Georgia Institute of Technology Atlanta Georgia 30332 USA Shenzhen Environmental Science and New Energy Technology Engineering Laboratory Tsinghua-Berkeley Shenzhen Institute Shenzhen 518055 PR China

Correction for ‘Impact of water quality parameters on bacteria inactivation by low-voltage electroporation: mechanism and control’ by Zheng-Yang Huo et al., Environ. Sci.: Water Res. Technol., 2018, DOI: 10.1039/c8e...

Correction for ‘Impact of water quality parameters on bacteria inactivation by low-voltage electroporation: mechanism and control’ by Zheng-Yang Huo et al., Environ. Sci.: Water Res. Technol., 2018, DOI: 10.1039/c8ew00041g.

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Oxidation of benzalkonium chloride by gamma irradiation: kinetics and decrease in toxicity

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Journal of Radioanalytical and Nuclear Chemistry 2017年第3期312卷 631-637页

作者： Zibin Xu Xue Zhang Nan Huang Hong-ying Hu Environmental Simulation and Pollution Control State Key Joint Laboratory State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC) School of Environment Tsinghua University Beijing People’s Republic of China Shenzhen Laboratory of Microorganism Application and Risk Control Graduate School at Shenzhen Tsinghua University Shenzhen People’s Republic of China Collaborative Innovation Center for Advanced Nuclear Energy Technology Institute of Nuclear and New Energy Technology Tsinghua University Beijing People’s Republic of China Shenzhen Environmental Science and New Energy Technology Engineering Laboratory Tsinghua-Berkeley Shenzhen Institute Shenzhen People’s Republic of China

The gamma degradation of toxic non-oxidizing biocide dodecyl dimethyl benzyl ammonium chloride (DDBAC) was investigated. The degradation of DDBAC achieved 70–100% depending on the initial concentration and the absorbed dose, but only 10–33% dissolved organic carbon was removed. The presence of NO3 −, HCO3 −, 2-propanol and tert-butanol inhibited the degradation of DDBAC. The DDBAC degradation rate constant ratios of ·OH, ·H and e aq − was calculated as 7.4:1.4:1. The acute toxicity of 10 mg L−1 DDBAC was removed by 60% at absorbed doses of 0.5–3.0 kGy. The results showed that gamma irradiation was effective to remove DDBAC and its toxicity.

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