A single tank multi-bed biogas fermentation device

Abstract

The invention relates to the field of methane production equipment, in particular to a single pool multi-bed methane fermentation device. The single pool multi-bed methane fermentation device comprises a casing and a support leg, wherein the top and the bottom of the casing are respectively provided with a feeding opening and a slag discharging opening; a material distribution fermentation unit is arranged in the casing in a laminated way, and comprises a flow division device, an upper dispersion bacterium fixing bed, a lower polymerization bacterium fixing bed and material distribution exhaust pipes; the flow division device is fixedly arranged in the core part of the casing; the upper dispersion bacterium fixing bed in a conical surface shape is arranged under the flow division device; the lower polymerization bacterium fixing bed in a reverse conical surface shape is fixedly arranged under the upper dispersion bacterium fixing bed; material distribution exhaust pipes are uniformly distributed and arranged at the circumference on the outer conical surface of the upper dispersion bacterium fixing bed in a staggered way; the material distribution exhaust pipes are uniformly distributed and arranged down the circumference of the inner conical surface of the lower polymerization bacterium fixing bed in the staggered manner; an overflow pipe is vertically arranged on a pipeline of the slag discharging opening. The single pool multi-bed methane fermentation device provided by the invention has the advantages that the building cost is lower; the gas producing rate and the fermentation concentration are high; the fermentation raw material utilization rate is greatly improved.

Description

technical field [0001] The invention relates to the field of biogas production equipment, in particular to a single-pool multi-bed biogas fermentation device. Background technique [0002] Biogas technology has a history of nearly 100 years in my country. It is generally believed that biogas technology is one of the most economical and effective methods to deal with organic waste, protect the environment, and turn waste into wealth. Therefore, biogas technology has been widely used in my country. , but in the course of long-term use, it was found that biogas technology still has a fatal flaw: the biogas digester for processing high solid content or other refractory organic waste liquid is a space without any shelter, and there is no setting in the pond for biogas bacteria to attach and grow The fixed inert medium for reproduction - solid bed. Due to this defect, there are many problems in the biogas production process that are difficult to solve, and the biogas production rat...

AI Technical Summary

Problems solved by technology

[0002] Biogas technology has a history of nearly 100 years in my country. It is generally believed that biogas technology is one of the most economical and effective methods to deal with organic waste, protect the environment, and turn waste into wealth. Therefore, biogas technology has been widely used in my country. , but in the course of long-term use, it was found that biogas technology still has a fatal flaw: the biogas digester for processing high solid content or other refractory organic waste liquid is a space without any shelter, and there is no setting in the pond for biogas bacteria to attach and grow Fixed inert medium for propagation - solid bed

Although stirring can break the stratification of raw materials, allow raw materials and bacteria to be evenly distributed in the pool, and increase the contact surface between raw materials and bacteria, but due to the difficulty of stirring, high cost, and difficult maintenance after failure, the stirring has been stuck in the oral cavity. In fact, most of the biogas digesters are not equipped with mixing equipment, although some have installed mixing equipment, but basically do not use it.

[0005] 2. The utilization rate of fermentation raw materials and pool capacity is low

The uneven distribution of raw materials in the tank and the uneven residence time greatly reduce the utilization rate of fermentation raw materials and tank capacity, and the fermentation effect of discharged biogas slurry is also difficult to guarantee

[0007] 3. The number of biogas bacteria is small, and the ability to bear organic load is low

[0008] Since there is no solid bacteria bed, the biogas bacteria exist in a suspended state, the living and breeding space of the biogas bacteria in the pond is not fixed, the distribution is uneven, and they are easy to be lost with the discharge or the volatile acid content rises, resulting in a small number of biogas bacteria. Low organic load capacity

[0009] 4. The gas production rate of biogas is difficult to increase, coupled with the high construction cost and operation management cost of biogas digesters, the economic benefits of biogas production are very low, which affects the promotion of biogas technology

Images