Optimization method for dry anaerobic digestion mixing ratio of multi-component materials
An optimization method and material mixing technology, applied in the fields of waste fuel, chemical statistics, chemical machine learning, etc., can solve the problems of long period of acidification inhibition of methane production, restrictions on popularization and application, etc., to improve credibility, avoid acidification inhibition, Easy to Monitor Effects
Pending Publication Date: 2021-05-28
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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Problems solved by technology
[0004] The severe inhibitory effects brought about by the high organic load and the unbalanced organic composition of the substrate in dry anaerobic digestion, mainly manifested as acidification inhibition, ammonia nitrogen inhibition, and long methane production cycle, severely limit the popularization and application of this technology
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[0020] The present invention firstly determines the mixing experiment scheme based on the mixing experiment design principle; secondly, carries out the standard anaerobic digestion batch experiment on the material mixing ratio involved in the scheme; Methane production, to obtain the experimental data required for the model; finally, a regression equation is established to determine the reasonable mixing ratio range of multi-component materials and predict the methane production under different material mixing compositions.
[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0022] The invention discloses a method for optimizing the mixing ratio of multi-component dry anaerobic digestion, including:
[0023] (1) Select different initial multi-component material mixing ra...
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The invention relates to a multi-component material dry anaerobic digestion mixing ratio optimization method, and the method comprises: selecting different initial multi-component material mixing ratios, and establishing a plurality of multi-component material mixing experiment groups; performing an anaerobic experiment on each multi-element material mixed experiment group; according to each anaerobic experiment result, obtaining a digestive juice index and a methane generation amount index of each multi-element material mixed experiment group; establishing a regression equation according to the digestive juice index and the methane generation amount index, and optimizing a multi-element material mixing ratio interval. The optimization method avoids the problems of acidification inhibition, ammonia nitrogen inhibition, long methane production period and the like in dry anaerobic digestion, and provides technical support for realizing efficient and stable methane production in dry anaerobic digestion. Besides, according to the optimization method, an index directly related to the process inhibitive ability in the anaerobic digestion process serves as a judgment basis, and the index is easy to monitor and can be directly applied to early warning regulation and control of efficient and stable operation of dry anaerobic digestion in actual engineering in the future.
Description
technical field [0001] The invention belongs to the field of realizing recycling of organic solid waste by dry anaerobic digestion, and in particular relates to an optimization method for the mixing ratio of multi-material dry anaerobic digestion. Background technique [0002] Anaerobic digestion is one of the key technologies to realize the reduction, stabilization and recycling of organic solid waste. Its main product, bio-natural gas, has been included in the national energy development strategy and has broad market prospects. With the implementation of the source classification of domestic waste in our country, a large amount of organic domestic waste has been separated. At the same time, dry anaerobic digestion is the key to realize the resource utilization of these organic solid wastes, important technology for energy. [0003] Different from traditional anaerobic digestion, dry anaerobic digestion (Total Solids, TS>15%) has the advantages of less biogas slurry out...
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Login to View More IPC IPC(8): G16C20/10G16C20/70C12P5/02
CPCG16C20/10G16C20/70C12P5/023Y02E50/30
Inventor 陈梅雪宋云鹏刘吉宝魏源送郑嘉熹
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI