现代化工

现代化工 ›› 2022, Vol. 42 ›› Issue (8) : 113-117,122. DOI: 10.16606/j.cnki.issn0253-4320.2022.08.023

科研与开发

Fe³⁺-TiO₂@CGS三维电极电化学处理苯酚及氨氮废水的研究

李健, 徐向平, 朱菊芬, 范晓勇, 闫龙, 王玉飞

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Electrochemical treatment of phenol wastewater and ammoniacal nitrogen wastewater by Fe³⁺-TiO₂@CGS three-dimensional electrode

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Received		Published
2022-02-16		2022-08-20
Issue Date	Revised Date
2022-08-11	2022-02-16

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摘要

以钛板为阳极、石墨板为阴极、煤气化渣负载Fe³⁺-TiO₂粒子(Fe³⁺-TiO₂@CGS)为三维电极,构筑了电化学处理苯酚废水、氨氮废水的三维电极反应器,考察了废水溶液pH、电流强度、粒子投入量对废水COD和NH₃-N的去除效果的影响。结果表明,苯酚废水溶液在pH=3、电流强度为1.2 A、粒子质量为3 g的条件下,COD去除率达到42.3%;氨氮废水在溶液pH=7、电流强度为1.0 A、粒子质量为3 g的条件下,NH₃-N去除率可达到67.5%。

Abstract

Taking titanium plate as anode,graphite plate as cathode,Fe³⁺-TiO₂ particles loaded on coal gasification slag (Fe³⁺-TiO₂@CGS) as three-dimensional electrode,a three-dimensional electrode reactor is constructed for electrochemical treatment of phenol wastewater and ammoniacal nitrogen wastewater.The effects of wastewater pH,current intensity and particle input on the removal of COD and NH₃-N are investigated.Experimental results show that the removal rate of COD reaches 42.3% when pH=3,current intensity is 1.2 A,and particle input is 3 g.The removal rate of NH₃-N in ammoniacal nitrogen wastewater can reach 67.5% as pH=7,current intensity is 1.0 A,and particle input is 3 g.