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Progress in Chemistry 2020, Vol. 32 Issue (10): 1462-1481 DOI: 10.7536/PC200122 Previous Articles   Next Articles

Technologies of Removal of Organics in Reverse Osmosis Concentrates from Petroleum Refinery Wastewater

Junfeng Wang1, Yilin Wang2, Xiaofei Zhang2, Daoguang Wang1, Yahui Li1, Hongyan He1, Xingchun Li2,**(), Suojiang Zhang1,**()   

  1. 1. State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
    2. State Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety and Environmental Technology, Beijing 102206, China
  • Received: Revised: Online: Published:
  • Contact: Xingchun Li, Suojiang Zhang
  • About author:
    **e-mail:(Suojiang Zhang)
    (Xingchun Li)
  • Supported by:
    National Natural Science Foundation of China(21978302); National Natural Science Foundation of China(21890762); National Natural Science Foundation of China(21921005); Innovation Academy for Green Manufacture, Chinese Academy of Sciences(IAGM2020DB05); Key Research Program of Frontier Sciences CAS(QYZDY-SSW-JSC011)
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The reverse osmosis concentrates (ROCs) with high concentration of chemical oxygen demand and salts are produced by a double-membrane technology, which has been widely used to treat the wastewaters from petroleum refinery enterprises. The ROCs are prohibited from directly discharging from environmental point of view and must be treated to comply with the tighter discharge limits of wastewater and solid wastes per the upgrading national emission standard. Therefore, effective technologies for the removal of organic matter and recovery of salts from ROCs have been committed to be developed. In this review, the recent progress on the treatment technologies of ROCs from petroleum refinery waste waters are summarized and discussed. Firstly, the compositions of ROCs, the basis of developing the treatment process, from several petroleum refinery plants are collected and analyzed. Subsequently, the removal methods of organic contaminants, such as physicochemical method, advanced oxidation method, and biochemical method, are elaborated in detail. Especially for some innovative advanced oxidation processes, including O3 oxidation, Fenton method, electrochemical oxidation, photocatalytic oxidation, and ozonation-based combination processes, and their mechanisms, advantages and disadvantages for the treatment of ROCs from industrial sources are emphasized comprehensively. Finally, the methods of salts’ recovery from ROCs are also discussed briefly.

Contents

1 Introduction

2 The compositions of ROC from petroleum refinery wastewater

3 Organic matter removal in ROC from petroleum refinery wastewater

3.1 Physicochemical method

3. 2 Advanced oxidation processes ( AOPs)

3.3 Biochemical method

4 Recovery of salts in ROCs from petroleum refinery wastewater

5 Conclusions

Key words: double-membrane, reverse osmosis concentrate, salts recovery, oxidation process, organic contaminants
pH BOD5 mg/L COD mg/L Conductivity
mS/cm		 Ref
8.5~9.0 5~10 85~95 5.5~6.0 20
8.5 3.28 150~180 - 21
8.6 8.4 120 8.0 22
6.5 3.7 270~350 4.4 23
6.9 - 60 1.7 24
8.2 - 328 8.5 25
6.5~7.5 - 120~260 7.5~9.0 26
7.2 - 204 1.9 27
8.0~8.5 9.2~16.3 106~125 4.4~5.1 28
7.9~8.8 10 78~120 3.1 29
Oxidant F2 ·OH O3 H2O2 Cl2 O2
Oxidation-reduction
potential (V)		 2.87 2.80 2.07 1.77 1.36 1.23
[1]
Wang D X, Tong F, Aerts P. Desalination and Water Treatment, 2011,25:133.
[2]
Dai X L, Chen C M, Yan G X, Chen Y, Guo S H. Journal of Environmental Science, 2016,50:49.
[3]
谢文玉(Xie W Y), 陈建军(Chen J J), 钟理(Zhong L), 钟华文(Zhong H W) 化工学报 (Journal of Chemical Industry and Engineering (China)), 2008,59:1251.
[4]
Xu X, Zhu X. Journal of Chemical Chemosphere, 2004,56:889.

pmid: 15268954
[5]
方忠海(Fang Z H), 薛家慧(Xue J H), 仝志明(Tong Z M), 沈霖(Shen L) 工业水处理 (Industrial Watter Treatment), 2003,23:76.
[6]
Ibrahima M M, Jaddo I A. Tikrit Journal of Engineering Sciences, 2013,20:84.
[7]
El-Naas M H, Al-Zuhair S, Alhaija M A. Journal of Hazardous Materials, 2009,173:750.

pmid: 19783364
[8]
El-Naas M H, Al-Zuhair S, Alhaija M A. Chemical Engingeering Journal, 2010,162:997.
[9]
El-Naas M H, Alhaija M A, Al-Zuhair S. Journal of Environmental Chemical Engineering, 2014,2:56.
[10]
Ibrahim D S, Lathalakshmi M, Muthukrishnaraj A, Balasubramanian N. Pet. Sci., 2013,10:421.
[11]
El-Naas M H, Al-Zuhair S, Al-Lobaney A, Makhlouf S. Journal of Environmental Management, 2009,91:180.

pmid: 19717218
[12]
Zhong J, Sun X, Wang C. Separation & Purification Technology, 2003,32:93.
[13]
Manouchehr N, Amin R, Saleh A A. Journal of Water Chemistry and Technology, 2018,40:167.
[14]
Al-Malack M H. Desalinaiton and Water Treatment, 2016,57:8608.
[15]
Norouzbahari S, Roostaazad R, Hesampour M. Desalination, 2009,238:174.
[16]
Abbasi M, Sebzari M R, Abadi S R H, Mohammadi T, Mahmood . Desalination and Water Treatment, 2013,51:2543.
[17]
Venzke C D, Rodrigues M A S, Giacobbo A, Bacher L C, Lemmertz I S, Viegas C, Striving J, PozzebonS . Management of Environmental Quality, 2017,28:70.
[18]
Pérez-González A, Urtiaga A M, Ibáñez R, Ortiz I. Water Research, 2012,46:267. doi: 10.1016/j.watres.2011.10.046

pmid: 22119366
[19]
夏季祥(Xia J X). 生产与环境 (Safety Health & Environment), 2013,13:29.
[20]
禚青倩(Zhuo Q Q), 曹晓磊(Cao X L), 李本高(Li B G). 石油炼制与化工 (Petroleum Processing and Petrochemicals), 2018,49:93.
[21]
丁洁(Ding J), 丁昀(Ding Y), 杨庆(Yang Q), 魏巍(Wei W), 陈存凯(Chen C K), 肖萍(Xiao P). 应用化工 (Applied Chemical Industry), 2017,46:1536.
[22]
龚小芝(Gong X Z), 赵辉(Zhao H), 万国辉(Wan G H), 刘正(Liu Z), 栾金义(Luan J Y). 化工环保 (Environmental Protection of Chemical Industry), 2012,32:428.
[23]
白小霞(Bai X X), 杨庆(Yang Q), 丁昀(Ding Y). 现代化工 (Modern Chemical Industry), 2016,36:58.
[24]
Zhou T, Lim T T, Chin S S, Fane A G. Chemical Engineering Journal, 2011,166:932.
[25]
赵朝成(Zhao C C), 焦叙来(Jiao X L), 崔爱玲(Cui A L), 刘春爽(Liu C S). 广州化工 (Guangzhou Chemical Industry), 2014,42:6.
[26]
李常青(Li C Q), 刘发强(Liu F Q), 江岩(Jiang Y), 荣树茂(Rong S M), 杨岳(Yang Y), 刘光利(Liu G L). 石化科技与应用 (Petrochemical Technology & Application), 2015,33:258.
[27]
王超(Wang C), 赵旭(Zhao X), 侯子义(Hou Z Y), 杨桂蓉(Yang G R), 冒冉(Mao R). 环境工程学报 (Chinese Journal of Environmental Engineering), 2014,8:3189.
[28]
Chen Y, Chen C M, Yoza B A, Li Q X, Wang Q H. Petroleum Science, 2017,14:605.
[29]
徐传海(Xu C H), 魏新(Wei X), 郦和生(Li H S), 王岽(Wang D). 化工环保 (Environmental Protection of Chemical Industry), 2011,31:148.
[30]
薛建良(Xue Q L), 赵东风(Zhao D F), 李石(Li S), 安慧(An H), 欧阳振宇(Ouyang Z Y). 工业水处理 (Industry Water Treatment), 2011,31:22.
[31]
曹宏伟(Cao H W), 徐海波(Xu H B), 李强(Li Q). 广东化工 (Guangdong Chemical Engineering), 2013,24:109.
[32]
郭瑞丽(Guo R L), 石玉(Shi Y), 王增长(Wang Z Z). 水处理技术 (Technology of Water Treatment), 2013,39:1.
[33]
徐海波(Xu H B), 孙健(SunJ), 程鑫(ChengX), 施雷(ShiL). 工业水处理 (Industry Water Treatment), 2019,1:110.
[34]
蔡巧燕(Cai Q Y). 新疆有色金属 (Xinjiang Nonferrous Metal), 2015,4:74.
[35]
付丽君(Fu L J), 赵玉增(ZhaoY Z), 葛红花(GeH H). 上海电力学院学报 (Journal of Shanghai University of Electric Power), 2012,28:242.
[36]
何未雨(He W Y). 污染防治技术 (Pollution Control Technology), 2014,3:19.
[37]
刘艳军(Liu Y J), 周艳(Zhou Y). 工业水处理 (Industry Water Treatment), 2019,12:107.
[38]
Amjad Z, Koutsoukos P G. Desalination, 2014,335:55.
[39]
Li L B, Yan S, Han C B, Shan G B. Chemosphere, 2005,60:467. doi: 10.1016/j.chemosphere.2005.01.012

pmid: 15950039
[40]
李英芝(Li Y Z), 詹亚力(ZhanY L), 张华(ZhangH), 吴百春(WuB C) 高校化学工程学报 (Journal of Chemical Engineering of Chinese Universities), 2014,3:665.
[41]
Li Y Y, Fang Z, He C, Zhang Y H, Xu C M, Chung K H, Shi Q. Energy Fuels, 2015,29:6956.
[42]
杨艳灵(Yang Y L), 袁艳林(YuanY L), 韦晓竹(WeiX Z), 张光辉(ZhangG H), 顾平(Gu P). 给水排水 (Water & Wastewater Engineering), 2015,41:119.
[43]
Lee K E, Morad N, Teng T T, Poh B T. Chemical Engineering Journal, 2012,23:370.
[44]
Jiao R Y, Fabris R, Chow C W K, Drikas M, Van Leeuwen J, Wang D S, Xu Z Z. Journal of Environmental Sciences, 2017,57:338.
[45]
Szlachta M, Adamski W. Ochrona Srodowiska, 2008,30:39.
[46]
Bagastyo A Y, Keller J, Poussade Y. Water Research, 2011,45:2415. doi: 10.1016/j.watres.2011.01.024

pmid: 21371733
[47]
于玥(Yu Y), 邓柏杰(Deng B J). 黑龙江水利科技 (Heilongjiang Science and Technology of Water Conservancy), 2015,43:24.
[48]
沈飞(Shen F), 刘阳(LiuY), 严滨(YanB), 李清彪(LiQ B). 工业水处理 (Industrial Water Treatment), 2007,26:417.
[49]
朱秋实(Zhu Q S), 陈进富(ChenJ F), 姜海洋(JiangH Y), 郭绍辉(GuoS H), 刘洪达(Liu H D). 化工进展 (Chemical Industry and Engineering Progress), 2014,33:1010.
[50]
Chen C M, Yoza B A, Wang Y D, Wang P, Li Q X, Guo S H, Yan G X. Environmental Science and Pollution Research, 2015,22:5552.

pmid: 25649390
[51]
佘红梅(She H M), 韩玉杰(Han Y J). 环境影响评价 (Environmental Impact Assessment), 2017,2:18.
[52]
Hansson H, Kaczala F, Marques M, Hogland W. International Journal of Photoenergy, 2012,6:1.
[53]
Antonin V S, Assupmcão M H M T, Silva J C M, Parreira L S, Lanza M R V, Santos M C. Electrochimica Acta, 2013,109:245.
[54]
范冬琪(Fan D Q), 魏健(WeiJ), 徐东耀(XuD Y), 涂响(TuX), 宋永会(Song Y H) 环境工程技术学报 (Journal of Environmental Engineering Technology), 2015,5:271.
[55]
Zhang A P, Gu Z P, Chen W M, Li Q B, Jiang G B. Environmental Science and Pollution Research, 2018,25:28907.
[56]
孙准天(Sun Z T), 滕巧丽(Teng Q L). 环境科学与管理 (Environmental Science and Management), 2017,42:84.
[57]
王晓(Wang X). 给水排水 (Water Supply and Drainage), 2015,2:59.
[58]
Davarnejad R, Sahraei A. Desalination and Water Treatment, 2015,57:1.
[59]
Yavuz Y, Koparal A S, Öğütveren Ü. B. Desalination and Water Treatment, 2010,258:201.
[60]
Yan L, Wang Y F, Li J, Ma H Z, Liu H J, Li T, Zhang Y J. Desalination, 2014,341:87.
[61]
Du H L, Pan B Y, Li J. Advanced Materials Research, 2014,955/959:2294.
[62]
Handa M, Lee Y, Shibusawa M, Tokumura M, Kawase Y. Journal of Chemical Technology and Biotechnology, 2013,88:88.
[63]
郭琇(Guo X), 孙宏伟(Sun H W). 工业水处理 (Industrial Water Treatment), 2010,30:64.
[64]
Mohadesi M, Shokri A. International Journal of Environment Science, 2018,2018:1.
[65]
王奇(Wang Q), 潘家荣(PanJ R), 梅朋森(MeiP S), 黄应平(HuangY P). 三峡大学学报 (Journal of China Three Gorges University), 2008,30:89.
[66]
Sirés I, Brillas E, Oturan M A, Rodrigo M, Panizza M. Environmental Science and Pollution Research, 2014,21:8336.

pmid: 24687788
[67]
Barrera-Díaz C, Cañizares P, Fernández F J, Natividad R, Rodrigo M A. Journal of the Mexican Chemical Society, 2014,58:256.
[68]
Rocha J H B, Gomes M M S, Fernandes N S, Silva D R D, Carlos A M H. Fuel Processing Technology, 2012,96:80.
[69]
Garcia-Segura S, Ocon J D, Chong M N. Process Safety and Environmental Protection, 2018,113:48.
[70]
Bagastyo A Y, Batstone D J, Kristiana I, Gernjak W, Joll C, Radjenovic J. Water Research, 2012,46:6104. doi: 10.1016/j.watres.2012.08.038

pmid: 22995242
[71]
da Silva S W, Navarro E M O, Rodrigues M A S, Bernardes A M, Pérez-Herranz V. Chemosphere, 2018,210:615.

pmid: 30031345
[72]
da Silva S W, Venzke C D, Welter J B, Schneider D, Ferreira J, Rodrigues M A, Bernardes A. Int. J. Environ. Res. Pub. Health, 2019,16:816.
[73]
Gargouri B, Gargouri O D, Gargouri B, Trabelsi S K, Abdelhedi R, Bouaziz M. Chemosphere, 2014,117:309.

pmid: 25129707
[74]
Santos I D, Dezotti M, Dutra A J B. Chem. Eng. J., 2013,226:293.
[75]
沈洪源(Shen H Y), 李忠才(Li Z C). 工业水处理 (Industry Water Treatment), 2015,8:110.
[76]
李凯(Li K), 孙南南(SunN N), 谢实涛(XieS T), 陈英文(ChenY W), 沈树宝(Shen S B). 环境污染与防治 (Environmental Pollution and Control), 2014,36:17.
[77]
Ramalho A M Z, Carlos A M H, Silva D R D. Fuel, 2010,89:531.
[78]
da Silva A J C, Dos Santos E V, Carla D O M C, Carlos A M H, Castro S S L. Chem. Eng. J., 2013,233:47.
[79]
Zhang H, Wang X Y, Li N, Xia J H, Meng Q M, Ding J C, Lu J. RSC Advances, 2018,8:34241. doi: 10.1039/C8RA06681G
[80]
Zou X W, Dong X L, Wang L M, Ma H C, Zhang X X, Zhang X F. International Journal of Photoenergy, 2014,2014:1.
[81]
Lee A, Libera J A, Waldman R Z, Ahmed A, Avila J R, Elam J W, Darling S B. Advanced Sustainable Systems, 2017,1:1.
[82]
李进辉(Li J H), 丁慧(DingH), 张秀霞(ZhangX X), 刘娜(LiuN), 黄文升(Huang W S). 油气田环境保护 (Environmental Protection of Oil & Gas Fields), 2013,23:15.
[83]
傅键记(Fu J J), 张建寰(ZhangJ H), 俞惠敏(YuH M). 厦门大学学报 (Journal of Xiamen University), 2007,46:372.
[84]
张冬梅(Zhang DM), 谢文玉(XieW Y), 谢颖(XieY), 卢文勇(LuW Y), 潘炳新(Pan B X). 化工生产与技术 (ChemicaI Production and TechnoIogy), 2003,10:14.
[85]
张晓娟(Zhang X J). 甘肃科技 (Gansu Science and Technology), 2017,33:32.
[86]
谷俊标(Gu J B). 辽宁化工 (Liaoning Chemical Industry), 2004,33:273.
[87]
Wang B, Zhang H, Wang F F, Xiong X G Y, Tian K, Sun Y B, Yu T T. Catalysts, 2019,9:241.
[88]
李亮(Li L), 阮晓磊(RuanX L), 滕厚开(TengH K), 郑书忠(ZhengS Z), 陈军(Chen J), 于海斌(Yu H B), 张艳芳(Zhang Y F), 苗静(Miao J). 工业水处理 (Industrial Water Treatment), 2011,31:43.
[89]
蒋广安(Jiang G A), 赵越(ZhaoY), 李宝忠(LiZ B), 郭宏山(GuoH S). 当代化工 (Contemporary Chemical Industry), 2018,47:749.
[90]
Mehrjouei M J, Müller S, Möller D. Chemical Engineering Journal, 2015,263:209.
[92]
Corrêa A X R, Tiepo E N, Somensi C A, Sperb R M, Radetski C M. Journal of Environmental Engineering, 2010,136:40.
谢陈鑫(Xie C X), 滕厚开(TengH K), 李肖琳(LiX L), 秦微(QinW), 赵慧(Zhao H), 郑书忠(Zheng S Z), 张艳芳(Zhang Y F). 环境工程学报 (Chinese Journal of Environment Engineering), 2014,8:2865.
[93]
Bernal-Martínez L A, Barrera-Díaz C, Solís-Morelos C, Natividad R. Chem. Eng. J., 2010,165:71.
[94]
García-Morales M A, Roa-Morales G, Barrera-Díaz C, Biyeu B, Rodrigo M A. Electrochemistry Communications, 2013,27:34.
[95]
康群, 马文臣(MaW C), 徐建民(XuJ M), 刘光金(LiuJ G) , 付方伟(Fu F W). 环境污染治理技术与设备 (Techniques and Equipment for Environmental Pollution Control), 2005,6:42.
[96]
卢欣(Lu X), 李兴春(LiX C), 白瑶(BaiY), 闫萍(YanP), 张晓飞(Zhang X F), 冯成亮(Feng C L), 林朋飞(Lin P F). 油气田环境保护 (Environmental Protection of Oil & Gas Fields), 2015,25:74.
[97]
黄敬(Huang J). 油气田环境保护 (Environmental Protection of Oil & Gas Fields), 2010,20:43.
[98]
Wang L. Earth and Environmental Science, 2018,108:1.
[99]
刘正(Liu Z), 彭海珠(PengH Z), 孙杰(SunJ), 赵辉(ZhaoH), 龚小芝(Gong X Z), 侯秀华(Hou X H) 化工环保 (Environmental Protection of Chemical Industry), 2012,32:535.
[100]
卢少红(Lu S H), 施明清(Shi M Q). 环境科学导报 (Environmental Science Survey), 2013,32:78.
[101]
Wang X L, Christ A, Regenauer-Lie , K , Hooman K, Chua H T. International Journal of Heat and Mass Transfer, 2011,54:5497.
[102]
Zhao D F, Liu T Z, Xue J L, Lia S, Lia C. Desalination and Water Treatment, 2015,57:11721.
[103]
Zhao D F, Xue J L, Li S, Sun H, Zhang Q D. Desalination, 2011,273:292. doi: 10.1016/j.desal.2011.01.048
[104]
刘天柱(Liu T Z), 赵东风(ZhaoD F), 李石(LiS), 薛建良(XueJ L), 刘伟(Liu W), 张华(Zhang H). 工业安全与环保 (Industrial Safety and Environmental Protection), 2015,41:46.
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