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首页> 外文期刊>Journal of Environmental Management >Treatment of sewage using an aged-refuse-based bioreactor
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Treatment of sewage using an aged-refuse-based bioreactor

机译：使用基于老化的生物反应器处理污水

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The refuse in landfills becomes stabilized or aged after years of placement, and the resultant partly or fully stabilized refuse thus obtained is referred to as "aged refuse" in this work. The aged refuse contains a wide spectrum and large quantity of microorganisms, which have been proved to have a strong decomposition capability for both biodegradable and refractory organic matter present in some wastewaters. In this study, the aged refuse excavated from a 10-year old closed landfill compartment at Shanghai Refuse Landfill was used as the substrate in a bioreactor for the biofiltration of sewage taken from the sewage pipeline systems in Shanghai downtown areas. Typically, 120 kg of screened aged refuse with a diameter less than 15 mm was used as biofiltration material in a round shaped bioreactor with an inner diameter of 80 cm and a height of 150 cm. Influent sewage with initial COD, BOD, and NH3-N concentrations of 400-500, 240-300, and 45-50 mg/L, respectively, was introduced into the bioreactor. The corresponding concentrations in the effluent were reduced to below 80-100, 10-20, and 10-15 mg/L, respectively, at a hydraulic load of 1000-1200 L/m(3) refuse/day, and the treatment efficiencies decreased with increased hydraulic load. The treatment mechanisinwas also studied. It was found that the pollutant removal efficiencies dramatically decreased when the aged refuse in the bioreactor was preliminarily disinfected using NaClO solutions, indicating that the pollutants in the sewage were biologically removed. The treatment process developed in this work is cost-effective. (c) 2006 Elsevier Ltd. All rights reserved.
机译：填埋场中的垃圾经过多年放置后变得稳定或老化，因此所得的部分或完全稳定的垃圾在此工作中称为“老化垃圾”。老化的垃圾含有广谱和大量的微生物，已被证明对某些废水中存在的可生物降解和难降解有机物均具有很强的分解能力。在这项研究中，从上海垃圾填埋场有十年历史的封闭式垃圾填埋场中挖出的老化垃圾被用作生物反应器中的底物，用于对上海市区污水管道系统中的污水进行生物过滤。通常，将120 kg直径小于15 mm的经筛选的老化垃圾用作内径为80 cm，高度为150 cm的圆形生物反应器中的生物过滤材料。将初始COD，BOD和NH3-N浓度分别为400-500、240-300和45-50 mg / L的进水引入生物反应器。在1000-1200 L / m（3）垃圾/天的水力负荷下，废水中的相应浓度分别降至80-100、10-20和10-15 mg / L以下，并且处理效率高随着液压负荷的增加而降低。还研究了机械疗法的治疗方法。发现使用NaClO溶液对生物反应器中的老化垃圾进行初步消毒后，污染物去除效率急剧降低，这表明污水中的污染物已被生物去除。在这项工作中开发的治疗方法具有成本效益。 （c）2006 Elsevier Ltd.保留所有权利。

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