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Co-Composting of Kitchen Waste, Faeces and Sewage Sludge as Sustainable Strategy for Island Waste Management: Process Dynamics


Affiliations
1 Department of Military Facilities, Army Logistics University of PLA, Chongqing, 401331, China
2 Bureau of Navy Engineering Design and Research, Beijing, 100070, China
3 Air Force Unit 93413, Yongji, 044500, China
 

Solid waste management is an inevitable challenge for Chinese government during the island construction practice in the South China Sea. Composting, if it is properly put into application, can constitute an environment friendly and sustainable method for solid waste management on these newly-built artificial coral reefs, due to its great potential to improve coral sand soil with low cost. As the key components of island solid wastes, kitchen waste, faeces and sewage sludge were combined in ratio of 1:1:1, which conformed to the actual production and constituted a mixed waste system. Thus, using a self-made intelligent reactor, this paper presented the performance and potential of mixed treatment of kitchen waste, faeces and sewage sludge through co-composting with the coamendment of sawdust and cornstalk. A series of process parameters were monitored, the laws about degradation and resynthesis of organic matter, transformation and loss of nitrogen were revealed in this paper. The results indicated that applying the aerobic composting technology to the solid waste treatment in the mixed system of kitchen waste, faeces and sewage sludge with coamendment of sawdust and cornstalk was feasible, and the optimal mixed ratio of total waste to coamendment was 4:1 on analysis of technique and economics.

Keywords

Wastes In The Islands, Kitchen Waste, Faeces, Co-Composting, Process Dynamics.
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  • Co-Composting of Kitchen Waste, Faeces and Sewage Sludge as Sustainable Strategy for Island Waste Management: Process Dynamics

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Authors

Jihao Zhou
Department of Military Facilities, Army Logistics University of PLA, Chongqing, 401331, China
Jie Liu
Department of Military Facilities, Army Logistics University of PLA, Chongqing, 401331, China
Zhiwei Zhao
Department of Military Facilities, Army Logistics University of PLA, Chongqing, 401331, China
Ping Zhang
Bureau of Navy Engineering Design and Research, Beijing, 100070, China
Jie Shi
Air Force Unit 93413, Yongji, 044500, China

Abstract


Solid waste management is an inevitable challenge for Chinese government during the island construction practice in the South China Sea. Composting, if it is properly put into application, can constitute an environment friendly and sustainable method for solid waste management on these newly-built artificial coral reefs, due to its great potential to improve coral sand soil with low cost. As the key components of island solid wastes, kitchen waste, faeces and sewage sludge were combined in ratio of 1:1:1, which conformed to the actual production and constituted a mixed waste system. Thus, using a self-made intelligent reactor, this paper presented the performance and potential of mixed treatment of kitchen waste, faeces and sewage sludge through co-composting with the coamendment of sawdust and cornstalk. A series of process parameters were monitored, the laws about degradation and resynthesis of organic matter, transformation and loss of nitrogen were revealed in this paper. The results indicated that applying the aerobic composting technology to the solid waste treatment in the mixed system of kitchen waste, faeces and sewage sludge with coamendment of sawdust and cornstalk was feasible, and the optimal mixed ratio of total waste to coamendment was 4:1 on analysis of technique and economics.

Keywords


Wastes In The Islands, Kitchen Waste, Faeces, Co-Composting, Process Dynamics.

References