1. Preparation, Characterization of Coal Ash Adsorbent and Orthogonal Experimental Rsearch on Treating Printing and Dyeing Wastewater
- Author
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Liang Shi, Chen Xin, Zizhen Xu, Zhang Yongli, Qingyu Wang, Lingfeng He, and Chen Xiaogang
- Subjects
Adsorption ,Dyeing wastewater ,Chemistry ,Fly ash ,Sodium ,Mixing (process engineering) ,chemistry.chemical_element ,Turbidity ,Raw material ,Dyeing ,Pulp and paper industry - Abstract
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 %.
- Published
- 2018