一种固废、造纸污泥协同发酵制备复合碳源的方法
By mixing kitchen waste with papermaking sludge and cellulose waste through anaerobic fermentation, a high-efficiency composite carbon source is prepared, which solves the problems of carbon-nitrogen imbalance in urban sewage and unutilized iron metal in papermaking sludge, thus achieving efficient sewage treatment and cost reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SOUTH CHINA UNIV OF TECH
- Filing Date
- 2026-03-19
- Publication Date
- 2026-07-17
AI Technical Summary
The imbalance of carbon and nitrogen ratio in urban sewage, the high cost of traditional external carbon sources, the low solids content of kitchen waste, and the ineffective utilization of iron in papermaking sludge all contribute to high sewage treatment costs and low efficiency.
A high-solids-content composite carbon source is prepared by anaerobic fermentation of kitchen waste mixed with papermaking sludge and cellulose-rich agricultural waste. Iron metal in the papermaking sludge is used as an electron donor to promote the directional accumulation of volatile fatty acids. Combined with the action of lactic acid bacteria, fermentation conditions such as temperature and pH are controlled to achieve the preparation of a highly efficient carbon source.
It enables the co-processing of kitchen waste and papermaking sludge, reduces wastewater treatment costs, increases the COD content of composite carbon sources, promotes the activity of denitrifying bacteria, improves nitrogen removal efficiency, simplifies the process, and reduces landfill disposal costs.
Smart Images
Figure CN121850300B_ABST