Development of a high performance electrochemical wastewater treatment system
Development of a high performance electrochemical wastewater treatment system
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DOI：
10.1016/s0304-3894(03)00222-x
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发表时间：
2003-10-01
影响因子：
13.6
通讯作者：
Maekawa, T
中科院分区：
文献类型：
--
作者：
Feng, C;Sugiura, N;Maekawa, T
为了构建可用于工业和城市污水处理的高性能电化学系统，通过施加脉冲电压选择阳极材料进行了实验室规模的电化学实验。在实验室实验的基础上，成功建立了0.3 m(3) h（-1）的电化学处理系统中试装置，采用电絮凝和电氧化工艺。通过对生活污水、池塘含藻水和生猪养殖废水的处理，评价了该处理系统的性能。结果表明，在Ti/RuO2-TiO2阳极上对亚硝基二甲基苯胺（RNO）检测到的羟基自由基比在铂阳极上检测到的羟基自由基要大，而在Ti阳极上没有检测到羟基自由基。此外，从循环伏安图中没有观察到铂电极和Ti/RuO2-TiO2电极对氨氧化的电催化性能有显著差异。对含藻生活污水和池塘水中T-N、T-P、NH4-N和COD的去除率约为90%，对藻类叶绿素a （chl-a）的去除率约为100%。电化学处理系统对生猪养殖废水的生物处理效果较好，但对生猪养殖废水的处理效果不显著。因此，电化学处理系统在处理含有高浓度悬浮物的废水时需要进行预处理。(C) 2003 Elsevier B.V.版权所有
In order to construct a high performance electrochemical system for practical use in industrial and municipal wastewater treatment, laboratory scale electrochemical experiments were performed to select anode materials by applying pulse voltage. Based on the results obtained from laboratory experiments, a pilot plant of electrochemical treatment system (0.3 m(3) h(-1)) was successfully developed, in which electrocoagulation and electrooxidation processes were used. The performance of the treatment system was evaluated by treating domestic wastewater, pond water containing algae and wastewater from hog raising. As a result, production of hydroxyl radicals detected with p-nitrosodimethylaniline (RNO) at Ti/RuO2-TiO2 anode was larger than with a platinum anode, and hydroxyl radicals were not detected at Ti anode. Moreover, a significant difference in electro-catalytic properties for ammonia oxidation between platinum and Ti/RuO2-TiO2 electrodes was not observed from the cyclic voltammogram. The removal of T-N, T-P, NH4-N and COD from domestic wastewater and pond water containing algae was approximately 90%, while the removal of chlorophyll-a (chl-a) of algae was approximately 100%. Although the electrochemical treatment system was effective on biologically treated wastewater from hog raising, the treatment of raw wastewater was not remarkable. Therefore, the electrochemical treatment system requires pretreatment when used with wastewater containing high concentrations of suspended solids. (C) 2003 Elsevier B.V. All rights reserved.