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Method and device for biologically producing methane and synchronously carrying out desulfurization

A biological methane production technology, applied in the direction of biochemical cleaning equipment, biochemical equipment and methods, enzymology/microbiology equipment, etc., can solve the problems of low energy consumption, reduce fermentation efficiency, etc., and improve production capacity and capacity enhanced effect

Pending Publication Date: 2018-01-26
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the baffle reactor is used for treatment, the energy consumption is low, but the discharge process is easy to take away a large number of useful microorganisms in the sludge, reducing the fermentation efficiency

Method used

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  • Method and device for biologically producing methane and synchronously carrying out desulfurization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Anaerobic digestion of pig manure wastewater:

[0084] The solid concentration in the pig manure wastewater to be treated is 5-15g / L, and the volume to be treated is 20L.

[0085] a) Pass water into the interlayer 5 of the water bath. Pass the water of set temperature through the water bath water inlet 17, and fill the water bath interlayer 5. Wherein, the set temperature range of water is 33-37°C.

[0086] b) Cover the reactor cover 18, and start to feed the pig manure waste water to be treated through the feed port 6. When the liquid level of the pig manure waste water to be treated has not passed the top of the filler 11 in the first packed bed 19 and the third packed bed 20, stop feeding and close the feeding port 6. At this time, the intake pipe 9 is in a closed state, and the oxygen supply device is in a closed state.

[0087] The waste water level height of four compartments in the reactor is the same, at this moment, in the first compartment 1 and the fourth...

Embodiment 2

[0095] Anaerobic digestion of cow dung wastewater

[0096] The solid concentration in cow dung wastewater is 5-20g / L, and the volume to be treated is 30L.

[0097] a) Pass water into the interlayer 5 of the water bath. Pass the water of set temperature through the water bath water inlet 17, and fill the water bath interlayer 5. Wherein, the set temperature range of water is 33-37°C.

[0098] b) cover the reactor cover 18, and start to feed the cow dung waste water to be treated from the feed port 6. After the cow dung wastewater liquid level to be treated has not crossed the filler 11 tops in the first packed bed 19 and the third packed bed 20, stop feeding and close the feeding port 6. At this time, the intake pipe 9 is in a closed state, and the oxygen supply device is in a closed state.

[0099] The waste water level height of four compartments in the reactor is the same, at this moment, in the first compartment 1 and the fourth compartment 4, the packing 11 is complete...

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Abstract

The invention relates to the field of waste water treatment, and particularly relates to a method and device for biologically producing methane and synchronously carrying out desulfurization. The device comprises a reactor box body, a reactor cover (18) and a packed bed. According to the method, in a mode of intercepting microorganisms, one part of microorganisms grow on the packed bed so as to reduce solid concentration in discharge sludge, and the number of the microorganisms in a reactor is increased so as to improve methane production capacity of the reactor; meanwhile, in a mode of filling trace of oxygen into a space above the liquid level of the reactor, hydrogen sulfide in generated gas is converted into elemental sulfur under the micro aerobic condition to be absorbed on the packed bed so as to obtain the elemental sulfur and implement recovery of the sulfur. The fixed packed bed of the device can implement fixing and interception on the microorganisms so as to improve a formation amount of the methane; the device is provided with two U-shaped pipes (15), so that materials in the reactor are uniformly mixed in the gas-liquid exchange process.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a method and device for biological methane production and simultaneous desulfurization. Background technique [0002] With the acceleration of my country's urbanization process and the rapid development of social economy, various waste and wastewater treatment with high organic matter concentration and high suspended solid concentration have attracted more and more attention, such as food wastewater, sewage plant residual sludge and aquaculture wastewater, etc. deal with. The wastewater or sludge contains a large amount of organic matter, which can be converted into clean energy (methane) through the action of anaerobic microorganisms. [0003] In the prior art, when treating such wastewater or sludge, different reactors have different treatment effects and energy consumption. When the baffle reactor is used for treatment, the energy consumption is low, but the discharge proc...

Claims

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Application Information

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IPC IPC(8): C12M1/107C12M1/04C01B17/04
CPCY02E50/30
Inventor 乔玮董仁杰
Owner CHINA AGRI UNIV
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