非膜技术处理生物稳定渗滤液的效果及成本

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Abstract In this paper, four non-membrane based techniques, including activated carbon adsorption, coagulation, Fenton and electrolysis, were applied to treat the anaerobic-aerobic stabilized leachate. The respective water quality parameters, such as dissolved organic carbon (DOC), chemical oxygen demand (COD), dissolved nitrogen (DN) and specific ultraviolet absorbance at 254nm (SUV₂₅₄), were determined for comparison. Cost change curve of removing unit COD was also depicted. When activated carbon adsorption, Fenton and coagulation were employed, the removal efficiencies of COD, DOC and DN increased with enhancing the dosages of agents. Fenton and electrolysis as chemical oxidation techniques shows superior performance on the removal of aromatized organics, resulting in 60%~70% reduction of SUV₂₅₄. In addition, the removal efficiency linearly increased with the current density. For every unit of COD removal, the cost for applying activated carbon adsorption is highest among all the tested techniques while the expense of Fenton will be minimal. To make these techniques economical, it is recommended that 5g/L of activated carbon, 0.605g/L of Fenton reagent and 4.92mmol/L Fe of coagulant were used for each process. When applied in practical application, it is worth noting that the actual dosage need be optimized on basis of the properties of on-site leachate and the local discharge standards.

Key words： Adsorption Coagulation Fenton Electrolysis Non-membrane based technology Bio-stabilized leachate Cost-benefit analysis

Received: 12 July 2021

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X703.5

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	Articles by authors
	LIU Wan-ying
	Lü Fan
	QIU Jun-jie
	HUANG Yü-long
	ZHANG Hua
	SHAO Li-ming
	HE Pin-jing

Cite this article:

LIU Wan-ying,Lü Fan,QIU Jun-jie等. Cost-benefit analysis of different non-membrane based technologies for the treatment of bio-stabilized leachate[J]. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(2): 644-653.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2022/V42/I2/644

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