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Improving the representation of HONO chemistry in CMAQ and examining its impact on haze over China
Zhang, Shuping; Sarwar, Golam; Xing, Jia; Chu, Biwu; Xue, Chaoyang; Sarav, Arunachalam; Ding, Dian; Zheng, Haotian; Mu, Yujing; Duan, Fengkui; Ma, Tao; He, Hong
2021-12-22
Source PublicationATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN0273-1223
Pages-
AbstractAs a thermally induced membrane separation process, membrane distillation (MD) has drawn more and more attention for the advantages of treating hypersaline wastewaters, especially the concentrate from reverse osmosis (RO) process. One of the major obstacles in widespread MD application is the membrane fouling. We investigated the feasibility of direct contact membrane distillation (DCMD) for landfill leachate reverse osmosis concentrate (LFLRO) brine treatment and systematically assessed the efficiency of chemical cleaning for DCMD after processing LFLRO brine. The results showed that 80% water recovery rate was achieved when processing the LFLRO brine by DCMD, but the membrane fouling occurred during the DCMD process, and manifested as the decreasing of permeate flux and the increasing of permeate conductivity. Analysis revealed that the serious flux reduction was primarily caused by the fouling layer that consist of organic matters and inorganic salts. Five cleaning methods were investigated for membrane cleaning, including hydrogen chloride (HCD-sodium hydroxide (NaOH), ethylene diamine tetraacetic acid (EDTA)-NaOH, critic acid, sodium hypochlorite (NaClO) and sodium dodecyl sulphate (SDS) cleaning. Among the chemical cleaning methods investigated, the 3 wt.% SDS cleaning showed the best efficiency at recovering the performance of fouled membranes.
Department水污染控制实验室
Keywordconcentrated brine landfill leachate membrane cleaning membrane distillation membrane fouling
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/46872
Collection水污染控制实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100085, Peoples R China
2.Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.US EPA, Ctr Environm Measurement & Modeling, 109 TW Alexander Dr, Res Triangle Pk, NC 27711 USA
5.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China
6.[Sarav, Arunachalam
7.Univ N Carolina, Inst Environm, 100 Europa Dr, Chapel Hill, NC 27514 USA
Recommended Citation
GB/T 7714
Zhang, Shuping,Sarwar, Golam,Xing, Jia,et al. Improving the representation of HONO chemistry in CMAQ and examining its impact on haze over China[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2021:-.
APA Zhang, Shuping.,Sarwar, Golam.,Xing, Jia.,Chu, Biwu.,Xue, Chaoyang.,...&He, Hong.(2021).Improving the representation of HONO chemistry in CMAQ and examining its impact on haze over China.ATMOSPHERIC CHEMISTRY AND PHYSICS,-.
MLA Zhang, Shuping,et al."Improving the representation of HONO chemistry in CMAQ and examining its impact on haze over China".ATMOSPHERIC CHEMISTRY AND PHYSICS (2021):-.
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