Textile wastewater treatment by application of combined chemical coagulation, electrocoagulation, and adsorption processes

被引:147
作者
Bazrafshan, Edris [1 ]
Alipour, Mohammad Reza [1 ]
Mahvi, Amir Hossein [2 ,3 ,4 ]
机构
[1] Zahedan Univ Med Sci, Hlth Promot Res Ctr, Zahedan, Iran
[2] Univ Tehran Med Sci, Sch Publ Hlth, Tehran, Iran
[3] Univ Tehran Med Sci, Natl Inst Hlth Res, Tehran, Iran
[4] Univ Tehran Med Sci, Ctr Solid Waste Res, Tehran, Iran
关键词
Coagulation; Textile wastewater; Adsorption; Decolorization; Electrocoagulation; AQUEOUS-SOLUTIONS; PERFORMANCE EVALUATION; ALUMINUM ELECTRODES; PHENOL REMOVAL; DYES; IRON; DECOLORIZATION; OXIDATION; COLOR; DETOXIFICATION;
D O I
10.1080/19443994.2015.1027960
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The aim of this work was to study the feasibility of treating real textile wastewater by combined chemical coagulation (using poly aluminum chloride (PAC) as coagulant), electrocoagulation (using aluminum electrodes), and adsorption process (using pistachio nut shell ash) to achieve the required standards. The influence of the critical operating variables such as coagulant dose, electrical potential, reaction time, and adsorbent dose on the removal efficiencies of major pollutants was determined. The results of this study were showed that removal of pollutants increased with increasing doses of PAC and applied voltage. The chemical coagulation process showed 40% of chemical oxygen demand (COD), 34% of biochemical oxygen demand (BOD5), 23.7% TSS, and 44.5% of dye removal efficiency, even though using relatively low PAC concentration (30mg/L). COD, BOD5, and dye removals of 93.1, 88.8, and 98.6% were achieved by electrocoagulation process (applied voltage 60V). In addition, COD, BOD5, and dye removals of 98, 94.2, and 99.9% were achieved by overall combined process (chemical coagulation, electrocoagulation, and adsorption processes). The experiments demonstrated the effectiveness of combined processes for the treatment of real textile wastewaters. Consequently, combined processes are inferred to be superior to these processes alone for the removal of both organic and inorganic compounds from textile wastewater.
引用
收藏
页码:9203 / 9215
页数:13
相关论文
共 63 条
[1]  
Abo-Elela S. I., 1998, ENVIRON TECHNOL LETT, V9, P101
[2]   Treatment of electroplating wastewater containing Cu2+, Zn2+ and Cr(VI) by electrocoagulation [J].
Adhoum, N ;
Monser, L ;
Bellakhal, N ;
Belgaied, JE .
JOURNAL OF HAZARDOUS MATERIALS, 2004, 112 (03) :207-213
[4]   Dyestuff wastewater treatment using chemical oxidation, physical adsorption and fixed bed biofilm process [J].
Ahn, DH ;
Chang, WS ;
Yoon, TI .
PROCESS BIOCHEMISTRY, 1999, 34 (05) :429-439
[5]  
Al-Kdasi A., 2004, Global Nest Int J, V6, P222, DOI DOI 10.30955/GNJ.000288
[6]   Coagulation/flocculation process in the treatment of abattoir wastewater [J].
Amuda, O. S. ;
Alade, A. .
DESALINATION, 2006, 196 (1-3) :22-31
[7]   Comparison of various advanced oxidation processes and chemical treatment methods for COD and color removal from a polyester and acetate fiber dyeing effluent [J].
Azbar, N ;
Yonar, T ;
Kestioglu, K .
CHEMOSPHERE, 2004, 55 (01) :35-43
[8]   Operating cost analysis of electrocoagulation of textile dye wastewater [J].
Bayramoglu, M ;
Kobya, M ;
Can, OT ;
Sozbir, M .
SEPARATION AND PURIFICATION TECHNOLOGY, 2004, 37 (02) :117-125
[9]  
Bazrafshan E., 2007, Iranian Journal of Environmental Health Science & Engineering, V4, P127
[10]  
Bazrafshan E., 2006, Iranian Journal of Environmental Health Science & Engineering, V3, P261