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- Title
混凝-热活化过硫酸盐氧化处理金属切削液废水.
- Authors
赵路霞; 张洛红; 王 蔚; 张 颖
- Abstract
Aiming at the problems of high COD concentration, complex composition and poor biodegradability of the cutting waste liquid produced by mechanical processing, the degradation process is carried out by thermal persulfate method combined with coagulation, and the factors influencing the treatment effect are studied by single factor experiment.The experimental results show that the optimum dosage of PAC is 20 g/L,pH is 5, Zeta potential increases from -60. 59mV to -38. 68 mV, which enhances the flocculation effect.The removal rate of COD after coagulation is 76. 36%.After coagulation and the thermal persulfate treatment, the dosage of potassium persulfate is PS : 12C()D=2, the temperature 90 °C , pH 6 ~ 7, reaction time 4 hours, COD removal rate reaches 81. 73%; and UVv-i removal rate and COD removal rate show a certain correspondence; the effluent COD is 1 463. 43 mg/L. The results show that the thermal activation of persulfate combined with coagulation has good degradation effect on metal cutting waste liquid, and the biodegradability of the subsequent treatment is improved.
- Publication
Journal of Xi'an Polytechnic University, 2017, Vol 31, Issue 2, p192
- ISSN
1674-649X
- Publication type
Article
- DOI
10.13338/j.issn.1674-649x.2017.02.008