CUIChao,XIONGJian-jun,ZHANGRong-bing,et al.Overview of Sludge Disposal Development in Japan and Its Enlightenment to Sludge Resource Utilization in China[J].China Water & Wastewater,2025,41(6):19-25.
Overview of Sludge Disposal Development in Japan and Its Enlightenment to Sludge Resource Utilization in China
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第6期
Page:
19-25
Column:
Date of publication:
2025-03-17
- Keywords:
- Japan; sludge disposal; sludge resource utilization; sludge building materials; sludge fertilizer production
- Abstract:
- To address the bottlenecks in sludge resource utilization in China, this study reviews Japan’s experience in sludge resource management, and analyzes its sludge production, disposal, resource utilization methods, and associated policies and requirements, to provide reference for domestic sludge resource development planning. The findings indicate that sludge production in Japan increased by 66.2% from 1988 to 2007. The resource utilization rate increased from 15% in 1988 to 78% in 2010. Due to the Fukushima nuclear power plant accident in 2011, the resource utilization rate was only 55%. Since then, the sludge resource utilization rate has steadily increased and recovered to 73% in 2017. At present, Japan had established a dominant sludge resource utilization pathway focused on building materials, which accounted for about 47% of total sludge by 2017. And the building materials products were diversified, with the sludge cement products being the main focus. The sludge resource utilization of agricultural greening applications had developed steadily, accounting for about 15% of the total sludge by 2017, mainly for sludge fertilizer production. At the same time, Japan had formed a relatively complete market access system for sludge fertilizer production, divided the types of sludge fertilizer products, and defined management standards. Currently, sludge fertilizer accounted for 15.8%-16.3% of the common fertilizer in Japan, among which sludge fermented fertilizer was the main product, accounting for 76.8%-78.3% of the total sludge fertilizer. By learning from Japan’s development experience, China should focus on diversifying sludge products, actively adopting government procurement models, establishing market access systems, and promoting the development process of sludge resource utilization.
Last Update:
2025-03-17