Studies on the treatment of wastewater containing naphthenic acid by flocculation-floation method

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  • 1. Dalian Institute of Chemical Physics The Chinese Academy of Science Dalian 116023 China;
    2. PetroChina Changqing Oilfield Company Xi'an 710000 China;
    3. PetroChina Liaohe Oilfield Company Shenyang Oil Extraction Mill Shenyang 110000 China

Received date: 2003-09-20

  Revised date: 2003-09-20

  Online published: 2010-10-01

Abstract

The treatment of wastewater containing naphthenic acid by flocculation method isstudied.The variabilitiesof important influencing factorshave been investigated in many tests.The optimum flocculating condition of removal CODCr is drawn asfollows:the dosage of polyferric sulfate is 275mg/L,anionic polyacry-lamide 8mg/L;pH value hasno effect on flocculation;but temperature has affect on the flocculation efficiency,and the lower the temperature is,the better the effect is.Based on the data received in laboratory tests,the optimum dosage of flocculantsis determined in pilot scale(2m3/h):polyferric sulfate(275mg/L),anionic polyacrylamide(6.7mg/L).The removal rate of COD>sub?Crreaches 83.1%,under the optimum condition.

Cite this article

Yu Yonghui, Yang Xu, Zhu Jingdong, Li Zuochen, Xiao Yutang, Cai Zhaorong, Sun Chenglin . Studies on the treatment of wastewater containing naphthenic acid by flocculation-floation method[J]. Industrial Water Treatment, 2004 , 24(1) : 27 -29 . DOI: 10.11894/1005-829x.2004.24(1).27

References

[1] 唐受印,等.水处理工程师手册[M].北京:化学工业出版社,2000.159-167
[2] 祁鲁梁,李永存,杨小莉.水处理药料实用手册[M].北京:中国石化工业出版社,2000.3-14

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