Method for promoting excess sludge microorganisms to hydrolyze by using thermophilic geobacillus sp
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HARBIN INST OF TECH
- Publication Date
- 2013-07-10
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
Description
technical field
[0001] The invention relates to a method for promoting microbial hydrolysis of excess sludge. Background technique
[0002] The wastewater treatment process is accompanied by the generation of a large amount of solid waste, the most important component of which is excess sludge. In China, in 2008, the output of excess sludge (80% moisture content) was as high as 18 million tons per year, and it continued to grow at a rate of 10% per year. Its treatment and disposal cost accounts for about 60% of the total operating cost of the sewage treatment plant and more than 40% of the total investment cost. The proportion of microorganisms in the remaining sludge reaches more than 70%, and is dominated by Gram-negative bacteria, and is rich in various organic carbon sources, such as: protein, carbohydrates and lipids. At present, for the treatment and disposal of excess sludge, more and more researches focus on the utilization of excess sludge as a cheap and valuable ...