High-temperature aerobic fermentation process utilizing smoldering heat energy of fermentation product

Abstract

The invention discloses a high-temperature aerobic fermentation process utilizing smoldering heat energy of fermentation products, which belongs to the field of aerobic fermentation of organic wastes and comprises the following steps: high-temperature aerobic fermentation of the organic wastes, accumulation and smoldering of primary fermentation products, and collection and supply of the smoldering heat energy to the high-temperature aerobic fermentation process. According to the method, the high-temperature aerobic fermentation product of the organic waste is used for self-maintaining smoldering, the smoldering heat energy is reused for high-temperature aerobic fermentation of the organic waste, the fermentation period is shortened, the fermentation energy consumption is reduced, and energy self-balance in the high-temperature aerobic fermentation process is achieved.

Description

technical field [0001] The invention belongs to the field of aerobic fermentation of organic waste, and more specifically relates to a high-temperature aerobic fermentation process utilizing smoldering heat energy of fermentation products. Background technique [0002] Agriculture, animal husbandry and urban sewage treatment plants will produce a large amount of organic waste, which will bring a great burden to the environment. After aerobic microbial fermentation treatment, waste can be turned into treasure. The traditional aerobic fermentation method has slow temperature rise, incomplete decomposition, long fermentation cycle, and poor production environment. In recent years, thermophilic bacteria have been used to realize high-temperature aerobic fermentation of organic waste, which can greatly shorten the composting cycle. However, the fermentation temperature in the composting process It needs to be raised from the traditional 55-70°C to above 80°C. Generally, container...

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Problems solved by technology

The traditional aerobic fermentation method has slow temperature rise, incomplete decomposition, long fermentation cycle, and poor production environment. In recent years, thermophilic bacteria have been used to realize high-temperature aerobic fermentation of organic waste, which can greatly shorten the composting cycle. However, the fermentation temperature in the composting process It needs to be raised from the traditional 55-70°C to above 80°C. Generally, container fermentation is used, which requires heating and heat preservation. The fermentation process consumes a lot of energy, and the high production cost has become a huge obstacle to the popularization and application of high-temperature aerobic fermentation technology. Therefore, the development of a An energy-saving and low-cost high-temperature aerobic fermentation process will have a huge application market

[0003] Chinese patent CN 111425868 A discloses a sludge self-sustaining smoldering and high-temperature aerobic fermentation composite disposal process and equipment, using the heat generated by a part of sludge smoldering to heat and keep warm for the high-temperature aerobic fermentation process, which greatly reduces the high temperature The energy consumption of the aerobic fermentation process, but this technology uses unfermented sludge mixed with sand, heated to 250-300°C and smoldering after ignition, which still requires a certain amount of energy and auxiliary materials (sand)

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