Sludge Bioleaching and Drying Technology

Technical development course

General Treatment developed the sludge bioleaching and drying technology with completely independent intellectual property right under the technical support of Nanjing Agricultural University, and has obtained more than 10 related core technology patents.

General Treatment has successfully applied this technology in multiple large-scale projects and achieved good results.

Dehydration mechanism

Biological leaching and drying technology refer to the action of various specialized microbial strains on concentrated sludge under aerobic conditions, changing the flocculation structure of the sludge, and improving the settling and dewatering performance of the sludge. Then, using mechanical extrusion to achieve semi-drying of the sludge to a moisture content below 60%, achieving the goal of reduction and harmless treatment.

This technology has undergone more than ten years of research and experimentation, and has been applied to sludge modification dehydration for the first time internationally. It is unique, innovative, and universal.

Technical Awards

In 2012, awarded the title of "2012 National Key Environmental Protection Practical Technology" by the Ministry of Environmental Protection.

In 2013, included in the 2013 Guiding Catalogue of Key Products and Services in Strategic Emerging Industries by the National Development and Reform Commission.

In 2014, included in the "2014 Best Technical Guidelines for Sludge Treatment and Disposal in Urban Sewage Treatment Plants" by the Ministry of Housing and Urban Rural Development.

In 2015, included in the "2015 National Advanced Pollution Prevention and Control Demonstration Technology Catalogue" of the Ministry of Environmental Protection.

Technical Route

Technical advantages

Engineering Performance

30tons/day sludge treatment project of Sewage Treatment Plant in Lake Tai New Town, Wuxi

30tons/day sludge treatment project of Sewage Treatment Plant in Lucun, Wuxi

30 tons/day PTA industrial sludge treatment project of Mitsubishi Chemical in Ningbo

160 tons/day sludge treatment project of Sixth Sewage Treatment Plant in Xian

200 tons/day sludge treatment project of Sewage Treatment Plant in South District of Ningbo

250 tons/day sludge treatment project of Sewage Treatment Plant in North District of Ningbo

1000 tons/day sludge treatment project of Longjiang Environmental Protection in Harbin

50 tons/day sludge treatment project of urban Sewage Treatment Plant in Tongxiang

275 tons/day sludge treatment project of Sewage Treatment Plant in Lake Chuan, Changchun

20 tons/day sludge treatment project in Guilin, Guangxi

500 tons/day sludge bioleaching and drying project in Nanning

600 tons/day sludge treatment project in Matougang, Zhengzhou

110 tons/day sludge treatment project of Longgui Sewage Plant in Guangzhou

36 tons/day sludge treatment project of Sewage Treatment Plant in Lianxia Shantou

Cooperation mode

BOT, BT, EPC, Complete set of equipment supply, Technical package supply., etc.