Aerobic fermentation reaction system and method

Abstract

The invention discloses an aerobic fermentation reaction system and method. The high-efficiency intelligent aerobic fermentation reaction system comprises an aerobic fermentation reactor, a circular water system, a gas intake and exhaust system, a detection system and a control system, wherein a water jacket is arranged outside a horizontal roller of the aerobic fermentation reactor; a material feeding and discharging hole and a gas intake and exhaust hole are respectively formed in sealing covers at two sides of the horizontal roller; the circular water system is connected and communicated with the water jacket on the horizontal roller; the gas intake and exhaust system is connected and communicated with the gas intake and exhaust hole in the sealing cover of the horizontal roller; a sensor of the detection system is arranged in the aerobic fermentation reactor and on a water passing pipe of the aerobic fermentation reactor; a signal output by the sensor is respectively connected with the control system; and the control system is used for controlling the circular water system, the gas intake and exhaust system, the aerobic fermentation reactor and external feeding and discharging conveying equipment. According to the high-efficiency intelligent aerobic fermentation reaction system and method disclosed by the invention, the occupied area is smaller and the fermentation efficiency is higher; no secondary pollution occurs; and the reduction, harmlessness and resourceful treatment of organic wastes can be quickly realized.

Description

technical field [0001] The invention belongs to the technical field of biological fermentation. It specifically relates to an aerobic fermentation reaction system and method, which are used for the reduction, harmless and resourceful treatment of feces, sludge and garbage. Background technique [0002] The main by-products of large-scale livestock and poultry farms, sewage treatment plants, and residential areas: feces, sludge, and kitchen waste (collectively referred to as organic waste or fermentation raw materials), which are large in volume and highly concentrated. If they cannot be disposed of in a timely and effective manner, they will easily cause serious environmental pollution. [0003] For the treatment of the above organic wastes, many solutions have been proposed, such as aerobic dynamic fermentation (composting), biogas fermentation, high temperature rapid drying, microwave drying, landfill and incineration power generation and other methods. [0004] Because ...

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Problems solved by technology

[0005] For example: ①Incineration power generation method, due to the high moisture content and low combustion calorific value of organic waste, it requires a large amount of fuel resources to be burned for power generation. continue to pollute the environment

② Direct landfill method, landfill treatment method occupies a huge area of ​​land and consumes land resources irreversibly; landfill produces a large amount of odor, and the secondary pollution of exudate is serious; landfill gas has the risk of deflagration

③ Anaerobic fermentation (biogas technology) is considered to be a biotechnology that can process feces and produce clean energy, but it brings secondary problems: first, the reactor is bulky, the volumetric gas production rate is low and the cost is high; The second is that the low temperature in winter reduces the reaction rate or even stops the fermentation, and it is difficult to treat the organic waste in winter; the third is that the solid-liquid separation of biogas slurry and biogas residue consumes a lot of energy, and it is difficult to realize commercialization of biogas slurry due to the constraints of transportation costs. However, the COD of the biogas slurry is very high, even if the sewage treatment plant treats it, it is difficult to discharge it up to the standard

The field composting fermentation technology widely used at present mainly includes: ① covers a large area; Collecting and processing pollutes the environment

At present, most of the research is to improve the efficiency or effect of aerobic composting by ventilation and forced oxygen delivery, turning or stirring, etc., while the heat and odor generated by fermentation are generally allowed to be discharged into the atmosphere, causing great environmental pollution; and The famous Dano drum-type aerobic reactor has the characteristics of high fermentation efficiency and small footprint compared with field fermentation, but the fermentation effect depends on factors such as the length of the drum. In order to prolong the residence time of fermentation raw materials in the drum reactor time to ensure the fermentation effect, the length of the drum is usually designed to be more than 10 or even 20 times the diameter of the drum, so the floor area is still large, the equipment manufacturing cost is high, and there are new fermentation raw materials (organic waste) and The contact area of ​​the fermented raw materials is too small, and the new fermented raw materials lack sufficient fermentation mothers, so the reaction speed is slow, etc.

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