Solid phase and liquid phase integrated methane fermenting device

Abstract

The invention relates to a solid phase and liquid phase integrated methane fermenting device. In the solid phase and liquid phase integrated methane fermenting device, a fermenting tank is divided into an upper part solid phase methane fermenting region and a lower part liquid phase methane fermenting region; substances of the two phases are separated by a solid phase bottom board; degraded sludge in the solid phase methane fermenting region enters the liquid phase region along with methane liquid through a drain valve; a methane liquid and methane communicating pipe is vertically arranged on the solid phase bottom board; and the methane liquid and methane communicating pipe is connected with the wall of the fermenting tank through two layers of shell-breaking cutting arms which are welded relatively interlacedly. According to the structure, shells can be broken automatically; the strength of the solid phase bottom board can be improved; raw materials are injected into the fermenting tank through a feeding slot and a slurry pump; methane slag and methane liquid are separated by a sieve plate; the slurry in the methane liquid is discharged from a blowoff valve at the bottom; and clear liquid is injected into the feeding slot through a connected valve. The solid phase and liquid phase integrated methane fermenting device has a simple structure, is convenient to operate and can be operated continuously; the shells can be broken automatically by utilizing lifting of liquid level, the solid phase and the liquid phase are fermented respectively, and degradation is performed completely; the fermenting raw materials, the methane slag and the methane liquid can realize double phase separation without power; and the methane liquid is recycled, so that blowdown load can be reduced.

Description

technical field [0001] Type the technical field description paragraph here. Background technique [0002] Type the technical field description paragraph here. Background technique [0003] Traditional biogas production is solid-liquid mixed fermentation. During the process of fermentation and gas production, straw raw materials float up and gather to form a hard shell through their own buoyancy, which not only reduces the gas production rate, but also leads to blockage and slag discharge. In order to solve the above problems, it is necessary to Installing a stirring device in the fermentation tank requires a higher structural requirement for sealing, which leads to an increase in manufacturing cost and operating cost. Contents of the invention [0004] Type the technical field description paragraph here. The invention relates to a straw biogas fermentation device, in particular to a solid-liquid two-phase integrated biogas fermentation device. Contents of the inventi...

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Problems solved by technology

[0003] Traditional biogas production is solid-liquid mixed fermentation. During the process of fermentation and gas production, straw raw materials float up and gather to form a hard shell through their own buoyancy, which not only reduces the gas production rate, but also leads to blockage and slag discharge. In order to solve the above problems, it is necessary to Install a stirring device in the fermentation tank, which requires high structural requirements for sealing, resulting in increased manufacturing costs and operating costs

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