An innovative reuse of bottom ash from municipal solid waste incinerators as substrates of constructed wetlands

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Title:	An innovative reuse of bottom ash from municipal solid waste incinerators as substrates of constructed wetlands
Authors:	Chyan, Jih Ming Lin, Chien Jung Yu, Mu Jin Shiu, Ruei-Feng Huang, Da Ji Lin, Chien Sa Senoro, Delia B.
Contributors:	Department of Environmental Resources Management, Chia Nan University of Pharmacy & Science Department of Public Safety and Fire Science, Chia Nan University of Pharmacy & Science Center for Environmental Academia-Industry Collaboration, Chia Nan University of Pharmacy & Science National Taiwan Ocean University Mapua University
Keywords:	biological nitrogen removal water treatment phosphorus removal landfill leachate filter media purification aeration community organics metals
Date:	2022
Issue Date:	2023-12-11 13:57:53 (UTC+8)
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Abstract:	The incineration of municipal solid waste has been important in waste management, but it raises another environmental issue concerning residue treatment. This study describes an innovative use of naturally aged incineration bottom ash (AIBA) as an alternative substrate for horizontal subsurface flow (HSSF) constructed wetlands (CW). Although experimental results from a period lasting for 396 days only revealed slightly higher removal ratios in HSSF with AIBA (HSSF-E) than in HSSF-traditional pebble beds (HSSF-C), increasing from 67% to 76% for BOD, 44%-51% for TKN, 47%-54% for NH3-N, and 44%-52% for TN. The data indicate that the use of AIBA in HSSF CW can achieves a certain removal efficiency of BOD and nitrogen species. Interestingly, the total phosphorus removal rates also increased significantly from 20% in HSSF-C to 36% in HSSF-E. These observations on the use of AIBA in HSSF CW confirmed that AIBA is a suitable alternative for use as a substrate for HSSF CWs and identified an additional way to reuse incineration bottom ash. Design criteria for a CW using AIBA as a partial substrate is proposed to improve the pollutant removal performance of HSSF CWs.
Relation:	CHEMOSPHERE, v.307, Part 2, 135896
Appears in Collections:	[Dept. of Environmental Resources Management] Periodical Articles [Dept. of Public Safety and Fire Science] Periodical Articles

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