Technical brief

Thermal drying is the most effective and reliable technology to reduce the moisture of municipal sludge. It uses steam, boiler flue gas, natural gas or electric heating combined with the international world-class drying equipment to reduce the moisture content of the sludge. After treatment, the moisture of sludge can be reduced to less than 40%, and the sludge volume reduction is more than 60%. The dried sludge then be sent to power plants, cement plants, waste incineration plants and other collaborative incineration to incinerate, and then achieve the final disposal of sludge and resource utilization.

Typical Process Diagram

On-going Projects

400 tons/day sludge thermal drying treatment project in Shunde, Guangdong

300 tons/day sludge thermal drying and co-incineration project of garbage power station in Huiyang, Guangdong

Solar drying technology

Solar drying technology of municipal sludge treatment is applicable for the vast central and western regions of China, Where the land is vast, the population is sparse and the sunshine is full, resulted a low operating cost of the solar drying system. Without auxiliary heat source, the operating cost is mainly electricity, and the direct operating cost can be as low as about 50 yuan/ton, with excellent economy.

Indoor of solar drying greenhouse

Dried sludge with ~40% moisture content

Performance

1) 100 tons/day sludge thermal drying treatment project in Nanhai Foshan, Guangdong.

2) 400 tons/day sludge thermal drying treatment project in Shunde, Guangdong.

3) 60 tons/day sludge thermal drying treatment project in Yingshan, Sichuan.

4) 300 tons/day sludge thermal drying treatment project in Fujian Jinjiang.

5) 200 tons/day sludge thermal drying treatment project in Foshan, Guangdong.

6) 100 tons/day sludge thermal drying treatment project in Anxi, Fujian.

7) 300 tons/day sludge thermal drying and co-incineration project of garbage power station in Huiyang, Guangdong

8) 600 tons/day sludge hot drying project (Phase II) in Luohuang, Chongqing

9) 80 tons/day sludge solar drying project in Wuzhong, Ningxia