Method for preparing bio anaerobic effusion methane by dry fermentation

Abstract

The invention relates to a method which utilizes organisms of straws, chicken manure, cattle manure, pig manure, sheep manure and horse manure to mix and agitate with zymogeneous bacteria. The method comprises the following steps: firstly filling the organisms in a ground pool, covering the upper part of the organisms for 3 to 5 days by using a plastic film; then refilling the organisms in a marsh gas generator after the temperature is up to 60 DEG C; adding 1 to 2 percent of limewater, so as to neutralize organic acid generated; controlling the pH value to be within 6.8 to 7.5, so that acid-producing bacteria and methane bacteria are subjected to the dry fermentation of anaerobic exudate and marsh gas; after the speed is balanced, generating anaerobic bacteria, and generating mixed gas; and generating pure march gas after the mixed gas is desulfurized, dehydrated and purified. The gas production amount of the organisms per kilogram averagely reach 0.35m<3>, the gas production rate averagely is 0.398m<3>. The method is widely applied to cooking and illuminating in a family.

Description

technical field [0001] The invention relates to a method for preparing biogas by using organic microorganisms to produce biogas by dry fermentation of anaerobic exudate under anaerobic and fully enclosed conditions. Background technique [0002] It is well known that the traditional biogas preparation method is to dig a pond first, and seal the walls with bricks and cement. When it is used, chicken manure, cow dung, horse manure, sheep manure, pig manure and crushed straw are filled into the biogas digester. Then inject an appropriate amount of water into the pool, and use wet fermentation method to generate biogas naturally, resulting in the consumption of 30% of energy, and even 45% in cold northern regions. Effect. Contents of the invention [0003] The purpose of the present invention is to provide a preparation method which utilizes organic microorganisms under anaerobic and fully enclosed conditions, adopts anaerobic exudate dry fermentation mode, and has a high bio...

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Problems solved by technology

[0002] It is well known that the traditional biogas preparation method is to dig a pond first, and seal the walls with bricks and cement. When it is used, chicken manure, cow dung, horse manure, sheep manure, pig manure and crushed straw are filled into the biogas digester. Then inject an appropriate amount of water into the pool, and use wet fermentation method to generate biogas naturally, resulting in the consumption of 30% of energy, and even 45% in cold northern regions. Effect

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