Introduction

2025-05-20

Sludge Carbonization Project in Changsha Economic and Technological Development Zone (City North)

Hunan Dingjiu Environment operates a sludge carbonization circular economy project in Changsha Economic and Technological Development Zone. Using advanced anoxic carbonization technology, it efficiently treats sludge, achieving harmless, reduced, and resourceful recovery, producing high-quality biochar to support circular economy development. BOT mode with 120 tons/day capacity. View project details.

The core of this project adopts the advanced process flow of "plate and frame dewatering + integrated drying and carbonization." Through anoxic carbonization technology, sludge achieves thorough reduction, harmlessness, and resource recovery. It not only effectively avoids the environmental risks associated with traditional landfilling or incineration but also converts sludge into high-value carbon-based products such as biochar, which can be used as soil amendments or new fuels, turning waste into wealth and integrating into the circular economy system. The successful operation of the Changsha Economic and Technological Development Zone project not only provides reliable sludge disposal services for the local area but also fully validates the advanced, stable, and environmentally friendly nature of Dingjiu Environment's anoxic carbonization technology, serving as a concrete practice to promote green urban development and achieve the "carbon peak and carbon neutrality" goals.<\/span><\/p>

Parameter Value Unit
Location Hunan Province / Changsha City -
Commissioning Date 2018-07-01 -
Treatment Capacity 120 t/d
Core Technology Integrated Continuous Sludge Drying & Carbonization Technology -
Sludge Source Municipal WWTP -
Influent Moisture ~80% %
Final Products Biochar & Thermal Energy -
Reduction Rate >80% %
Emission Standard Better than National Standard -
Footprint 1000 sq.m