Composite microbial agent for sludge anaerobic digestion pretreatment and production method thereof
A compound microbial agent and anaerobic digestion technology, which is applied in the direction of microorganism-based methods, biological sludge treatment, biochemical equipment and methods, etc., can solve the problems of restricting the popularization and application of mesophilic anaerobic digestion technology, complicated process operation management, and difficult digestion Problems such as the large volume of the pool, to achieve the effect of inhibiting the activity and rapid decomposition of organic matter, improving the efficiency of anaerobic digestion, and increasing the removal rate
Active Publication Date: 2017-01-11
河北协同环境科技有限公司
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Problems solved by technology
[0004] At present, the sludge stabilization treatment of urban sewage treatment plants often adopts the mesophilic anaerobic digestion process, but the operation and management of this process is complicated, the digestion cycle is long, the digester is bulky, and the biogas generation rate is low, which limits the mesophilic anaerobic digestion to a certain extent. Promotion and application of technology
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[0034] The composite microbial bacterial agent for sludge anaerobic digestion pretreatment of the present invention is in liquid state and includes the following bacteria and is produced through fermentation and culture. The pH value of the composite microbial bacterial agent is 3-4. The total number of viable bacteria contained in each milliliter of compound microbial bacterial agent is not less than 2.0×10 8 .
[0035] The compound microbial agent contains Bacillus subtilis, Streptomyces albicans, Streptomyces griseus, Candida utilis, Aspergillus sojae, Lactobacillus bulgaricus, Lactococcus lactis, Rhodopseudomonas palustris, Rhodopseudomonas capsula, Rhodopseudomonas sphaericus. These ten strains are conventional strains and can be purchased from China General Microorganism Culture Collection Center (CGMCC).
[0036] The ratio of the above-mentioned bacterial species in the compound microbial bacterial agent is as follows:
[0037] The number of viable bacteria of Bacillus...
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The invention discloses a compound microbial agent for anaerobic digestion treatment of sludge and a production method of the compound microbial agent. The compound microbial agent is a liquid microbial agent which is prepared through fermentation culture and comprises the following bacteria: bacillus subtilis, streptomyces albus, streptomyces griseus, candida utilis, aspergillus sojae, lactobacillus bulgaricus, lactococcus lactis, rhodopseudomonas palustris, rhodopseudomonas capsulate and rhodobacter sphaeroides, and the number of total viable bacteria in 1ml of the compound microbial agent is not less than 2*10<8>. All the bacteria used by the compound microbial agent have metabiosis and symbiosis effects and form a biodegradation system with very high enzymatic activities. When the compound microbial agent disclosed by the invention is used for carrying out anaerobic digestion treatment on sludge, the degradation rate of organic matters can be effectively increased, the sludge hydrolytic process can be accelerated, the anaerobic digestion time of the sludge can be shortened, and the biological gas yield can be increased.
Description
technical field [0001] The invention relates to a composite microbial bacterial agent used in the field of environmental protection, in particular to a composite microbial bacterial agent used for sludge anaerobic digestion treatment and a preparation method thereof. Background technique [0002] With the development of the national economy, a large number of sewage treatment plants have been built and operated, and the output of urban sludge is also increasing. At present, sludge is mainly processed in the form of composting, landfilling and random external transportation, which is in a chaotic state. The proportion is roughly 10% for composting, 20% for landfilling, and 70% for simple landfilling and stacking for random external transportation. The sludge problem is gradually attracting the attention of sewage treatment plants and the public. In addition to a large amount of organic matter and nutrients such as nitrogen and phosphorus, sludge also contains a large number ...
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IPC IPC(8): C12N1/20C12N1/16C12N1/14C02F11/04C12R1/125C12R1/47C12R1/545C12R1/72C12R1/66C12R1/225C12R1/01
Inventor 卢琼刘洪泉李成义
Owner 河北协同环境科技有限公司