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181608-采用管式无机陶瓷膜深度处理金属表面加工废乳化液

   作者:汤润芝,彭明国,等    日期:2018-09-20     浏览:66    评论:0    
提示:中文核心期刊,中国科技核心期刊! DOI: 10.19289/j.1004-227x.2018.16.008采用管式无机陶瓷膜深度处理金属表面加工废乳化液汤润

中文核心期刊,中国科技核心期刊!


DOI: 10.19289/j.1004-227x.2018.16.008

采用管式无机陶瓷膜深度处理金属表面加工废乳化液

汤润芝1,彭明国1,田静思1,吴旭鹏1, 2,程寒飞2,张文艺1, *(1.常州大学环境与安全工程学院,江苏 常州 213164;2.中冶华天工程技术有限公司,江苏 南京 210019)

摘要:以管式无机陶瓷膜作为主分离工艺,对经过聚合氯化铝和聚丙烯酰胺混凝沉淀预处理后总油和化学需氧量(COD)依然很高的金属表面加工所产生的废乳化液进行深度处理。考察了工艺参数对膜通量及出水水质的影响,探究了膜污染的原因与清洗方法。在跨膜压差为0.16 MPa,废乳化液温度为15 ~ 35 °C,pH 为5 ~ 9,总油初始质量浓度不超过300 mg/L 的最佳条件下,处理后的COD 和总油分别为315.37 mg/L 和33.7 mg/L,平均去除率在70%以上。无机陶瓷膜的清洗周期为2 h,在0.20 MPa 的跨膜压差下采用0.1% H2O2 和1% NaOH 溶液先后清洗之后,膜通量可恢复至原来的84%以上。

关键词:金属表面加工;废乳化液;无机陶瓷膜;分离;深度处理;总油;化学需氧量;再生

中图分类号:X703.1; X76 

文献标志码:A 

文章编号:1004 – 227X (2018) 16 – 0732 – 06

Advanced treatment of spent metalworking emulsion using tubular ceramic membrane // TANG Run-zhi,

PENG Ming-guo, TIAN Jing-si, WU Xu-peng, CHENG Han-fei, ZHANG Wen-yi*

Abstract: The advanced treatment of a spent metalworking emulsion which was pretreated by coagulation precipitation

with polyaluminum chloride and polyacrylamide but still had high contents of total oil and COD (chemical oxygen demand)was conducted by separation based on inorganic ceramic membrane. The effects of process parameters on membrane flux and effluent quality were examined. The contamination of membrane and the cleaning method for its regeneration were studied.Averagely more than 70% of COD and total oil was removed from the spent emulsion with an initial total oil content of at most 300 mg/L under the optimized conditions (i.e. transmembrane pressure 0.16 MPa, temperature 15-30 °C, and pH 5-9),and the effluent COD and total oil were 315.37 mg/L and 33.7 mg/L, respectively. The inorganic ceramic membrane should be cleaned every two hours and at least 84% of original membrane flux can be recovered by washing with 0.1% H2O2 and 1% NaOH solutions successively at a transmembrane pressure of 0.20 MPa.

Keywords: metalworking; spent emulsion; inorganic ceramic membrane; separation; advanced treatment; total oil content;chemical oxygen demand; regeneration

First-author’s address: School of Environmental & Safety Engineering, Changzhou University, Changzhou 213164,China

PDF全文下载,请点击   1816008_0732-0737_185941.pdf

 
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