Analyzing the Reuse Potentials of Landfilled Solid Wastes for Farm Water Treatment and Reuse

Q4 Environmental Science

Journal of Solid Waste Technology and Management Pub Date : 2021-08-01 DOI:10.5276/jswtm/2021.417

A. Chinenyenwa, Nik Daud Nik Norsyhariati, I. Syazwani, C. M. Hasfalina

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引用次数: 0

Abstract

The increasing solid waste management problems in developing countries necessitated landfill mining to determine the reuse potentials of landfilled solid waste materials. In this study, characterization of landfilled solid waste obtained from a closed landfill site in Malaysia was conducted to ascertain its reuse potentials for biodegradation in wastewater treatment. The results revealed adequate neutral pH, Moisture Content of 34 %, Organic Content of 10.4 % and Bacterial Population in terms of Total Coliform of 8.3 × 105 CFU/100 mL, which are ideal conditions for biodegradation while porosity n of 51%, allow free flow of water during treatment. The SEM showed irregular shapes and pore spaces and a BET surface area of 3.376 m 2 g-1 which enables adsorption of pollutants on its surface, air diffusion and re-aeration. Furthermore, the waste material was used as media for biodegradation in a lab-scale bioreactor at a hydraulic loading of 4 L m-3 d-1 and inflow rate of 0.1 L min-1. The results showed maximum removal rates of 95, 97, 86, 70, 70, and 98% for COD, BOD, TSS, TDS, NH3-N, and TP respectively. Utilization of this technology as bioreactor landfills will solve landfill congestion and also provide cheap wastewater treatment option.

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填埋固体废物在农田水处理与回用中的潜力分析

发展中国家固体废物管理问题日益严重，因此必须进行填埋采矿，以确定填埋固体废物的再利用潜力。在这项研究中，从马来西亚一个封闭的垃圾填埋场获得的垃圾填埋固体废物进行了表征，以确定其在废水处理中生物降解的再利用潜力。结果表明，适宜的中性pH、水分含量为34%、有机物含量为10.4%、总大肠菌群8.3 × 105 CFU/100 mL是生物降解的理想条件，而孔隙率为51%，可使水在处理过程中自由流动。扫描电镜显示出不规则的形状和孔隙空间，BET表面积为3.376 m2 g-1，有利于污染物在其表面的吸附、空气扩散和再曝气。此外，在实验室规模的生物反应器中，以4 L m-3 d-1的水力负荷和0.1 L min-1的进水速率作为生物降解的介质。结果表明，对COD、BOD、TSS、TDS、NH3-N和TP的去除率分别为95%、97%、86%、70%、70%和98%。利用该技术作为生物反应器填埋将解决垃圾填埋场拥挤问题，并提供廉价的废水处理选择。

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来源期刊

Journal of Solid Waste Technology and Management Environmental Science-Waste Management and Disposal

CiteScore

0.60

自引率

0.00%

发文量

期刊介绍： The Journal of Solid Waste Technology and Management is an international peer-reviewed journal covering landfill, recycling, waste-to-energy, waste reduction, policy and economics, composting, waste collection and transfer, municipal waste, industrial waste, residual waste and other waste management and technology subjects. The Journal is published quarterly (February, May, August, November) by the Widener University School of Engineering. It is supported by a distinguished international editorial board.