Moraes Peterson Bueno, Bertazzoli Rodnei
Faculty of Mechanical Engineering, Department of Materials Engineering, Campinas State University, C Postal 6122, 13083-970 Campinas, São Paulo, Brazil.
Chemosphere. 2005 Jan;58(1):41-6. doi: 10.1016/j.chemosphere.2004.09.026.
Sanitary landfills are the major method used today for the disposal and management of municipal solid waste. Decomposition of waste and rainfall generate leachate at the bottom of landfills, causing groundwater contamination. In this study, leachate from a municipal landfill site was treated by electrochemical oxidation in a pilot scale flow reactor, using oxide-coated titanium anode. The experiments were conducted under a constant flow rate of 2000 lh(-1) and the effect of current density on chemical oxygen demand, total organic carbon, color and ammonium removal was investigated. At a current density of 116.0 mA cm(-2) and 180 min of processing, the removal rates achieved were 73% for COD, 57% for TOC, 86% for color and 49% for ammonium. The process proved effective in degrading leachate, despite this effluent's usual refractoriness to treatment.
卫生填埋是当今用于处理和管理城市固体废物的主要方法。垃圾分解和降雨会在填埋场底部产生渗滤液，导致地下水污染。在本研究中，使用氧化物涂层钛阳极在中试规模的流动反应器中通过电化学氧化处理来自城市垃圾填埋场的渗滤液。实验在2000 lh(-1)的恒定流速下进行，研究了电流密度对化学需氧量、总有机碳、颜色和铵去除的影响。在电流密度为116.0 mA cm(-2)且处理180分钟的情况下，COD的去除率达到73%，TOC的去除率为57%，颜色的去除率为86%，铵的去除率为49%。尽管这种废水通常难以处理，但该工艺被证明对降解渗滤液有效。
