Preparation, Characterization of Coal Ash Adsorbent and Orthogonal Experimental Rsearch on Treating Printing and Dyeing Wastewater

2017 International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Wang, Qingyu^1 ; He, Lingfeng^1 ; Shi, Liang^1 ; Chen, Xiaogang^2 ; Chen, Xin^1 ; Xu, Zizhen^1 ; Zhang, Yongli^1

School of Environmental and Chemical Engineering, Foshan University, Foshan, China^1

Foshan Environment Investment Co., Ltd., Foshan, China^2

关键词: Carboxymethyl chitosan;    Characterization of coal;    COD removal efficiency;    Decoloration rate;    Decolorization rates;    Dyeing conditions;    Printing and dyeing wastewaters;    Removal efficiencies;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/322/4/042019/pdf
DOI  :  10.1088/1757-899X/322/4/042019

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Using high temperature activated sodium flying ash and carboxymethyl chitosan as raw material to prepare carboxymethylchitosan wrapping fly-ash adsorbent (CWF), combined with iron-carbon micro-electrolysis treatment of simulated and actual printing and dyeing wastewater. The conditions for obtaining are from the literature: the best condition for CWF to treat simulated printing and dyeing wastewater pretreated with iron-carbon micro-electrolysis is that the mixing time is 10min, the resting time is 30 min, pH=6, and the adsorbent dosage is 0.75 g/L. The results showed that COD removal efficiency and decoloration rate were above 97 %, and turbidity removal rate was over 90 %. The optimum dyeing conditions were used to treat the dyeing wastewater. The decolorization rate was 97.30 %, the removal efficiency of COD was 92.44 %, and the turbidity removal rate was 90.37 %.