A sequencing batch anaerobic dry fermentation method and its device with enhanced warming function

Abstract

The invention discloses sequencing batch anaerobic dry fermentation method and fermentation device with a temperature increment enhancing function. The sequencing batch anaerobic dry fermentation device comprises an allogenic water circulation temperature increment system (1), a hot leachate reflux spray temperature increment system (2), an anaerobic dry fermentation reactor (3) and a middle hot leachate circulation temperature increment system (4) of the reactor. The allogenic water circulation temperature increment system (1) is used for conveying hot water to heating coiled pipes of the reactor through the heating of a boiler to provide a heat source; the leachate reflux spray temperature increment system (2) is used for enhancing material temperature increment through hot leachate spray-percolation circulation; exterior walls of the anaerobic dry fermentation reactor (3) adopt the design of hollow concrete walls which are beneficial to heat insulation and are made from heat insulating materials; the middle hot leachate circulation temperature increment system (4) of the reactor is used for increasing a temperature for a material in the middle of the reactor by means of leachatemiddle circulation; the material temperature increment uniformity of an overall system is improved; a purpose of enhancing the temperature increment is achieved. The sequencing batch anaerobic dry fermentation device has a simple structure and a good mass transfer effect, is convenient for mechanical feeding and discharging and manual operation, and is easy for construction, and the system stablyruns.

Description

technical field [0001] The invention belongs to the field of agricultural biogas engineering, and is used for improving the warming and heat preservation effect and the heating uniformity of materials during the operation process of the sequential batch type anaerobic dry fermentation biogas engineering using agricultural waste, crop stalks and livestock and poultry manure as mixed raw materials, especially The invention relates to a method and a device for returning and increasing the temperature of leachate in a sequencing batch type anaerobic dry fermentation biogas project. Background technique [0002] Biogas engineering is an important way to realize the resource utilization of agricultural waste, the main means of large-scale treatment of agricultural waste, and the key link of planting and breeding circular agriculture. my country is in a critical stage of transformation and upgrading of biogas projects. It is an urgent problem to be solved in the development of biog...

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Problems solved by technology

This will seriously affect the efficiency of biogas production, which is an engineering practical problem that needs to be solved urgently

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