Faecal sludge treatment and utilization by hydrothermal carbonization

JOURNAL OF ENVIRONMENTAL MANAGEMENT

卷:216

Article; Proceedings Paper

Fakkaew, Krailak^1,3  Koottatep, Thammarat¹  Polprasert, Chongrak² 

[1] Asian Inst Technol, Sch Environm Resources & Dev, Environm Engn & Management, Khlong Nueng, Thailand

[2] Thammasat Univ, Dept Civil Engn, Fac Engn, Bangkok, Thailand

[3] Mae Fah Luang Univ, Sch Hlth Sci, Environm Hlth, Chiang Rai, Thailand

关键词: Faecal sludge;    Hydrochar;    Hydrothermal carbonization;   

DOI  :  10.1016/j.jenvman.2017.09.031

来源: Elsevier

【 摘 要 】

Hydrothermal carbonization (HTC) is a thermal conversion process that can be applied to convert faecal sludge into carbonaceous solids, called hydrochar. In this study, the technical feasibility of hydrochar production by HTC of faecal sludge was investigated. Experimental results showed energy contents of the produced hydrochar to be about 19-20 MJ/kg, comparable to natural coals and therefore usable as a solid fuel. The produced hydrochar contained a carbon content of approximately 40%wt, which could be processed further to make it suitable as an anode in batteries. The produced hydrochar also had adsorption characteristics for removing heavy metals and micropollutants in wastewater. Liquid by-products obtained from the HTC process were found to contain high concentrations of organic matter, while the amount of gas produced was 10 L-gasikg-FS with CO2 is the main component. The bio-methane potential tests of this liquid product suggested the methane production of about 2.0 L-CH4 per kg-faecal sludge could be obtained. (C) 2017 Elsevier Ltd. All rights reserved.

【 授权许可】

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