西南石油大学学报(自然科学版) ›› 2008, Vol. 30 ›› Issue (1): 112-115.DOI: 10.3863/j.issn.1000-2634.2008.01.031

• 油气化学工程与化工 • Previous Articles     Next Articles

Advanced Treatment of Produced Water with a Novel Composite Nanofil Tration Membrane

WANG Juan 1，2 CHEN Guo-hua1 HOU Ji-ling3 KONG Xiang-ping2   

  1. 1.Key Laboratory of Marine Chemistry Theory and Technology,Ministry of Education,Ocean University of China,Qingdao Shandong 266100,China； 2.School of science,Qingdao Nongye University,Qingdao Shandong 266109,China;3.Rizhao Marine Environmental Monitoring Station of state Ocean Administration,Rizhao Shandong 276826,China
  • Received:2007-03-06 Revised:1900-01-01 Online:2008-02-20 Published:2008-02-20
  • Contact: WANG Juan

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Abstract: The negative charged Carboxymethyl chitin(CM-CH)/polyacrylonitrile(PAN) composite membrane is used to treat the produced water.The results indicates that when operating pressure is 1.0MPa,flux is 30L/h,the removal rate of total soluble phosphorus,total nitrogen in NO 3- and NO 2- and CODCr are above 70%,83% and 94% respectively,and the chroma is almost entirely disappeared.The concentration of CODCr,total nitrogen in NO 3- and NO 2- and total soluble phosphorus in the permeation feed are 3.0～10.2mg/L,2.7～3.5mg/L and 1.0～1.4mg/L respectively,which have reached or approached the GB I standard.It is put forward that PO4 3- is prone to be associative or complexing ions with H + ,Ca 2+ ,Mg 2+ which weaken coulomb repulsion strength between the negative charged nanofiltration membrane and the ions,so the removal rate of PO4 3- is less than NO 3- or NO 2-.Negative membrane is effective to remove phosphorus,nitrogen and CODCr in produced water (the reclaimed water) and remove phosphorus from the phosphorous wastewater and produced water.

Key words: composite nanofiltration membrane, removal of phosphorus, removal of nitrogen, produced water (reclaimed water), removal rate

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