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首页> 外文期刊>Environmental Engineering Science >Anodic Oxidation of Effluents from Stages of MBR-UF Municipal Landfill Leachate Treatment Plant
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Anodic Oxidation of Effluents from Stages of MBR-UF Municipal Landfill Leachate Treatment Plant

机译：MBR-UF市政垃圾填埋场渗滤液治疗厂阳极氧化污水氧化

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This study used boron-doped diamond electrode on niobium substrate (Nb/boron-doped diamond [BDD]) for the anodic oxidation of landfill leachate in a batch reactor. Raw leachate and biologically pretreated effluent samples were collected from each step of the existing unit operation of a municipal landfill leachate treatment plant (Kocaeli-Turkey). The influence of parameters, such as treatment time, initial pH (3.50-10.0), and applied current density (j = 76-1,060 A/m(2)), on the removal of total organic carbon (TOC), chemical oxygen demand (COD), and ammonium nitrogen (NH4+-N) was assessed. The highest pollutant removal efficiencies were obtained at leachate inherent pH (6.50-8.75), moreover, pollutant removal rates increased with the increase in current density. The NH4+-N removal mainly occurred by indirect oxidation and well fitted second-order kinetics, whereas COD removal followed pseudo first-order kinetics. The optimum current density ensuring simultaneous removal of COD and NH4+-N was 756 and 455 A/m(2)for raw leachate and for pretreated effluents, respectively. Under these optimums, nearly complete NH4+-N removal was attained, while = 97% removal of TOC and COD was recorded. Herein, we present anodic oxidation as a suitable alternative for treatment of both stabilized raw leachate and effluents from stages of the membrane bioreactor/ultrafiltration treatment plant for the abatement of COD, TOC, and NH4+-N.
机译：本研究使用硼掺杂金刚石电极在铌基板上（Nb /硼掺杂的金刚石[BDD]），用于填埋液浸润器中的堆渗器渗滤液。从城市垃圾填埋场渗滤液处理厂（Kocaeli-Turkey）的现有单位操作的每个步骤中收集原料渗滤液和生物预处理的污水样品。参数的影响，例如治疗时间，初始pH（3.50-10.0）和施加电流密度（J = 76-1,060A / m（2）），除去总有机碳（TOC），化学需氧量（COD），评估氮气（NH 4 + -N）。在渗滤液中获得最高的污染物去除效率（6.50-8.75），此外，随着电流密度的增加，污染物去除率增加。 NH4 + -N拆卸主要是由间接氧化和良好安装的二阶动力学发生的，而COD去除跟随伪一阶动力学。为原料渗滤液和预处理流出物分别确保同时去除COD和NH4 + -N的最佳电流密度为756和455A / m（2）。在这些最佳上，达到了几乎完全的NH 4 + -N去除，而> = 97％的去除TOC和COD被记录。在此，我们将阳极氧化作为适当的替代物，用于处理来自膜生物反应器/超滤处理厂的阶段的稳定的原料渗滤液和流出物，用于剥离COD，TOC和NH4 + -N。

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