复合电化学-生化法处理桉木CTMP制浆废水的研究  

CTMP Wastewater Treatment with Compound Electrochemical-biochemical Method

作　　者：胡志军[1] 李友明[2] 刘宝鉴[1] 

机构地区：[1]浙江科技学院,浙江杭州310023 [2]华南理工大学造纸与污染控制国家工程研究中心,广东广州510640

出　　处：《中国造纸》2009年第5期37-41,共5页China Pulp & Paper

基　　金：浙江省科技计划项目优先主题(2008C12062)

摘　　要：采用复合电化学-生化法对桉木CTMP制浆废水进行处理,并与微电解法和混凝法进行比较,考察了电偶腐蚀电流电位,修饰电极表面形貌,Zeta电位,温度和金属离子浓度等对电化学处理效果的影响,并初步探讨了复合电化学法的作用机制。结果表明,金属M3是合适的微电池阳极材料,电沉积法制备的Ti/SnO2-Sb2O3-MnO2/PbO2电极性能良好,过渡金属离子可加速自由基链反应,新生态金属离子络合物能破坏色度胶粒的稳定性从而易于脱除色度。复合电化学法能有效降低色度(去除率>95%)和CODCr,可生化性明显改善,处理效果显著优于混凝法和微电解法。SBR生化法进一步处理废水,CODCr降低约79.8%～86.6%。Compound electrochemical-biochemical method was developed for the treatment of eucalyptus CTMP wastewater, meanwhile it was compared with micro-electrolysis method and coagulation method. The effects of galvanic corrosion current/potential, surface morphology of modified electrode, ζ potential, temperature, density of metal ion on electrochemical treatment efficiency were investigated, and the reaction mechanism of compound electrochemical method was preliminarily discussed. The results showed that metal M3 is the appropriate material for micro-cell anode, Ti/SnO2-Sb2O3-MnO2/PbO2 electrode prepared by electro-deposition method has good performance, transition metal ion can accelerate the radical chain reactions, the stability of the color colloidal particles is destroyed by nascent metal ions complex and they are easily removed. The color and CODcr are removed efficiently by compound electrochemical method, and the biodegradability of the wastewater is improved obviously, the treatment result is significantly better than the methods of normal coagulation and micro-electrolysis. CODcr removal rate is about 79.8% - 86.6% when the outlet wastewater is treated further by SBR.

关 键 词：复合电化学 废水 电偶腐蚀 ZETA电位 

分 类 号：X793[环境科学与工程—环境工程]