磁絮凝法和高梯度磁流体萃取法集成处理含铬废水

doi:10.11949/j.issn.0438-1157.20171630

化工学报 ›› 2018, Vol. 69 ›› Issue (8): 3509-3516.DOI: 10.11949/j.issn.0438-1157.20171630

磁絮凝法和高梯度磁流体萃取法集成处理含铬废水

杜蛟, 孙宗英, 官月平, 张智, 李涛, 徐郭莉, 范青乾

北京科技大学材料科学与工程学院, 北京 100083

收稿日期:2017-12-12 修回日期:2018-07-03 出版日期:2018-08-05 发布日期:2018-08-05
通讯作者: 官月平
基金资助:
国家重点基础研究发展计划项目（2013CB632602）。

Removal of chromium-containing wastewater by integration treatment of magnetic flocculation and HGMS magnetic-fluid extraction

DU Jiao, SUN Zongying, GUAN Yueping, ZHANG Zhi, LI Tao, XU Guoli, FAN Qingqian

School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

Received:2017-12-12 Revised:2018-07-03 Online:2018-08-05 Published:2018-08-05
Supported by:
supported by the National Basic Research Program of China (2013CB632602).

摘要/Abstract

摘要：

将磁分离技术和化学絮凝法、溶剂萃取法相结合，提出磁絮凝法和高梯度磁流体萃取法集成处理高浓度含Cr电镀废水的新工艺。采用磁絮凝法对高浓度含Cr电镀废水进行一次处理，通过正交实验方法获得了最佳磁絮凝条件：pH 8，磁性Fe₃O₄颗粒用量4 g，搅拌速度80 r·min^-1，主絮凝剂PAFC用量6 ml，可使废水中Cr浓度由4325.13 mg·L^-1降为29.8 mg·L^-1；采用高梯度磁流体萃取法对磁絮凝后废水进行二次处理，将该废水流经两个串联的高梯度磁流体萃取装置，持续动态萃取7 h，在最佳萃取条件下，最高萃取率为99.40%，平均萃取率98.97%，总萃余液Cr浓度由29.8 mg·L^-1降为0.31 mg·L^-1，低于国家排放标准；碱性条件下磁流体萃取剂反萃率大于90%，再生磁流体萃取剂可重复使用。

关键词: 磁絮凝, 高梯度磁流体萃取, 集成处理, 含铬废水

Abstract:

The magnetic separation technology was combined with chemical flocculation and solvent extraction method to synthetically provide a new way of treating chromium-containing wastewater by the application of magnetic flocculation and high gradient magnetic separation (HGMS) for magnetic-fluids extraction.Namely magnetic flocculation method was used to treat high concentration chromium-containing electroplating wastewater once, and the optimal magnetic flocculation conditions were obtained by orthogonal test method:pH 8, the dosage of magnetic Fe₃O₄ particles 4 g, mixing speed 80 r·min^-1, the main flocculant PAFC dosage 6 ml, under which can reduce the chromium concentration in the wastewater from 4325.13 mg·L^-1 to 29.8·mg·L^-1. After magnetic flocculation treatment, the method of high gradient magnetic-fluids extraction was used in secondary processing, the wastewater was pumped and continuously flowed through two series of high gradient magnetic-fluids extraction devices within seven hours, and the highest extraction rate could achieve 99.4%, average extraction rate could achieve 98.97%, under optimal conditions. Furthermore, chromium concentration could be reduced to 0.31 mg·L^-1, which met the national emission standard. Under alkaline conditions, the stripping rate of magnetic fluid was more than 90%, and the regenerated magnetic fluid extraction agent can be reused.

Key words: magnetic flocculation, HGMS magnetic-fluid extraction, integration treatment, chromium-containing wastewater

中图分类号:

TF804.2

杜蛟, 孙宗英, 官月平, 张智, 李涛, 徐郭莉, 范青乾. 磁絮凝法和高梯度磁流体萃取法集成处理含铬废水[J]. 化工学报, 2018, 69(8): 3509-3516.

DU Jiao, SUN Zongying, GUAN Yueping, ZHANG Zhi, LI Tao, XU Guoli, FAN Qingqian. Removal of chromium-containing wastewater by integration treatment of magnetic flocculation and HGMS magnetic-fluid extraction[J]. CIESC Journal, 2018, 69(8): 3509-3516.

参考文献 30

[1]	孙宁, 王兆苏, 卢然, 等. "十三五"重金属污染综合防治思路和对策研究[J]. 环境保护科学, 2016, 42(2):1-7. SUN N, WANG Z S, LU R, et al. Study of ideas and countermeasures of comprehensive prevention and control of heavy metal pollution during the 13th five-year plan period[J]. Environmental Protection Science, 2016, 42(2):1-7.
[2]	WIONCZYK B, APOSTOLUK W. Solvent extraction of chromium (Ⅲ) from alkaline media with quaternary ammonium compounds (Ⅰ)[J]. Hydrometallurgy, 2004, 72(3/4):185-193.
[3]	孙建德. 含铬废水的处理现状[J]. 湖南有色金属, 2013, 29(5):59-62. SUN J D. Current situation on the treatment for chromium-containing wastewater[J]. Hunan Nonferrous Metals, 2013, 29(5):59-62.
[4]	JUANG R S, SHAO H J. A simplified equilibrium model for sorption of heavy metal ions from aqueous solutions on chitosan[J]. Water Research, 2002, 36(12):2999-3008.
[5]	郭轶琼, 宋丽. 重金属废水污染及其治理技术进展[J]. 广州化工, 2010, 38(4):18-20. GUO Y Q, SONG L. Heavy metal pollution and advances in treatment technology[J]. Guangzhou Chemical Industry, 2010, 38(4):18-20.
[6]	AYOUB G M, HAMZEH A, AL-HINDI M. The impact of process sequences on pollutant removal efficiencies in tannery wastewater treatment[J]. Water Air & Soil Pollution, 2013, 224(1):1-13.
[7]	SONG Z, WILLIAMS C J, EDYVEAN R G J. Treatment of tannery wastewater by chemical coagulation[J]. Desalination, 2004, 164(3):249-259.
[8]	SAMRANI A E, LARTIGES B S, VILLIÉRAS F. Chemical coagulation of combined sewer overflow:heavy metal removal and treatment optimization[J]. Water Research, 2008, 42(4):951-960.
[9]	马士龙, 张明, 王玉川, 等. 两级还原沉淀法处理高浓度含铬废水[J]. 电镀水处理, 2013, 33(7):54-57. MA S L, ZHANG M, WANG Y C, et al. Two-stage reduction precipitation method for the treatment of wastewater containing chromium[J]. Industrial Water Treatment, 2013, 33(7):54-57.
[10]	IBIGBAMI T B. Removal of heavy metals from pharmaceutical industrial wastewater effluent by combination of adsorption and chemical precipitation methods[J]. 2016, 4(1):24-32.
[11]	ANIMES K G, AJOY K C, AMAR N S, et al. Removal of Cr (Ⅵ) from aqueous solution:electrocoagulation vs chemical coagulation[J]. Separation Science & Technology, 2007, 42(10):2177-2193.
[12]	BELLIE P N, THIRUVENKADAM R, PANCHANATHAN K, et al. Health effects of chromium, its reduction and removal[J]. International Journal of Chemical & Pharmaceutical Analysis, 2014, 2(1):48-53.
[13]	BAI R S, ABRAHAM T E. Studies on chromium (Ⅵ) adsorption-desorption using immobilized fungal biomass[J]. Bioresource Technology, 2003, 87(1):17-26.
[14]	AGRAWAL A, PAL C, SAHU K K. Extractive removal of chromium (Ⅵ) from industrial waste solution[J]. Journal of Hazardous Materials, 2008, 159(2):458-464.
[15]	YU K, PETER S, XUE L Z H. Extraction of zinc and chromium (Ⅲ) and its application to treatment of alloy electroplating wastewater[J]. Separation Science & Technology, 2003, 38(2):405-425.
[16]	NISHIHAMA S, NISHIMURA G, TAKAYUKI H A, et al. Separation and recovery of Cr (Ⅵ) from simulated plating waste using microcapsules containing quaternary ammonium salt extractant and phosphoric acid extractant[J]. Industrial & Engineering Chemistry Research, 2004, 43(3):751-757.
[17]	朱利, 贾悦, 吕晓龙, 等. 溶剂萃取法处理高含量6价铬废水[J]. 水处理技术, 2015, 41(9):36-39. ZHU L, JIA Y, LÜ X L, et al. The treatment Of Cr (Ⅵ) with high content from wastewater by the process of solvent extraction[J]. Technology of Water Treatment, 2015, 41(9):36-39.
[18]	MAHANDRA H, SINGH R, GUPTA B. Liquid-liquid extraction studies on Zn (Ⅱ) and Cd (Ⅱ) using phosphonium ionic liquid (Cyphos IL 104) and recovery of zinc from zinc plating mud[J]. Separation & Purification Technology, 2017, 177:281-292.
[19]	SHARMA A D, PATIL N D, PATWARDHAN A W, et al. Synergistic interplay between D2EHPA and TBP towards the extraction of lithium using hollow fiber supported liquid membrane[J]. Separation Science & Technology, 2016, 51(13):2242-2254.
[20]	吴乾菁, 李昕, 李福德, 等. 微生物治理电镀废水的研究[J]. 环境科学, 1997, (5):47-50. WU Q J, LI X, LI F D, et al. Microbial treatment technology for the electroplating wastewater[J]. Environmental Science, 1997, (5):47-50.
[21]	梁郁强, 贾宗剑, 江凤仪. 活性污泥吸附重金属Cr6+的研究[J]. 环境技术, 2004, 22(1):33-34. LIANG Y Q, JIA Z J, JIANG F Y. A study on the adsorption of heavy metal Cr (Ⅵ) on activated sludge[J]. Environmental Technology, 2004, 22(1):33-34.
[22]	ZOU A M, CHEN X W, CHEN M L, et al. Sequential injection reductive bio-sorption of Cr (Ⅵ) on the surface of egg-shell membrane and chromium speciation with detection by electrothermal atomic absorption spectrometry[J]. Journal of Analytical Atomic Spectrometry, 2008, 23(3):412-415.
[23]	郑利兵, 佟娟, 魏源送, 等. 磁分离技术在水处理中的研究与应用进展[J]. 环境科学学报, 2016, 36(9):3103-3117. ZHENG L B, TONG J, WEI Y S, et al. The progress of magnetic separation technology in water treatment[J]. Acta Scientiae Circumstantiae, 2016, 36(9):3103-3117.
[24]	DONG T, YANG L, ZHU M, et al. Removal of cadmium (Ⅱ) from wastewater with gas-assisted magnetic separation[J]. Chemical Engineering Journal, 2015, 280(15):426-432.
[25]	ZHAO Y, LIANG W, LIU L, et al. Harvesting Chlorella vulgaris by magnetic flocculation using Fe3O4 coating with polyaluminium chloride and polyacrylamide[J]. Bioresource Technology, 2015, 198:789-796.
[26]	王毅, 李平, 罗曼, 等. 磁加载絮凝法处理重金属废水技术的研究进展[J]. 化工进展, 2016, 35(s1):281-284. WANG Y, LI P, LUO M, et al. Research progress on heavy metal wastewater treatment by load magnetic flocculation[J]. Chemical Industry and Engineering Progress, 2016, 35(s1):281-284.
[27]	任秀峰, 官月平, 王强, 等. 磁性流体固定床萃取分离低浓度金离子[J]. 化工学报, 2012, 63(5):1443-1448. REN X F, GUAN Y P, WANG Q, et al. Magnetic fluid fixed-bed extraction of gold ions with low concentration[J]. CIESC Journal, 2012, 63(5):1443-1448.
[28]	WANG Q, GUAN Y, REN X, et al. Removal of low concentration Cr (Ⅵ) from aqueous solution by magnetic-fluids fixed bed using the high gradient magnetic separation[J]. Journal of Colloid & Interface Science, 2012, 374(1):325-330.
[29]	WANG Q, GUAN Y, REN X, et al. Application of magnetic extractant for the removal of hexavalent chromium from aqueous solution in high gradient magnetic separator[J]. Chem. Eng. J., 2012, 183:339-348.
[30]	施波. 废水中六价铬的存在形态分析[J].电镀与环保, 1986, 6(4):30-33. SHI B. Analysis of existing forms of Cr6+ in wasted water[J]. Electroplating & Potion Control, 1986, 6(4):30-33.

磁絮凝法和高梯度磁流体萃取法集成处理含铬废水

Removal of chromium-containing wastewater by integration treatment of magnetic flocculation and HGMS magnetic-fluid extraction

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