Acidification device and method of high-solid content dry livestock and poultry manure

Abstract

The invention discloses an acidification device and method of high-solid content dry livestock and poultry manure. The acidification device is characterized by comprising a hydrolysis acidification reactor, a biogas slurry refluxing and washing organic acid liquor device, a stirring and acid-squeezing mechanism, a hot water circulation heat transfer system, an acid solution collecting and blending system and an acidification tank angle-regulating mechanism, wherein the inside of the hydrolysis acidification reactor is provided with the stirring and acid-squeezing mechanism; one end of the hollow rotation shaft of the stirring and acid-squeezing mechanism is driven by a reducer motor, the other end of the hollow rotation shaft of the stirring and acid-squeezing mechanism is connected with the hot water circulation heat transfer system; the biogas slurry refluxing and washing organic acid liquor device is connected with the feed hopper of the hydrolysis acidification reactor; the hot water circulation heat transfer system is communicated with the hollow rotation shaft of the stirring and acid-squeezing mechanism, the parts in the hydrolysis acidification reactor perform heat transfer through the stirring and acid-squeezing mechanism; the acid solution collecting and blending system is connected with the hydrolysis acidification reactor, and the spindle heads on both sides of the hydrolysis acidification reactor is used to support the tank angle-regulating mechanism on the rack through a bearing seat. The acidification device disclosed by the invention can be widely used in the acidification treatment process of the livestock and poultry manure.

Description

technical field [0001] The invention relates to an acidification equipment and method for livestock and poultry manure, in particular to an acidification equipment and method for dry cleaning pig manure with high solid content. Background technique [0002] Anaerobic fermentation technology is an effective method to treat livestock and poultry manure, and is the core technology of biogas projects in livestock and poultry farms. At present, there are two types of fermentation processes commonly used in biogas engineering: (1) single-phase fermentation process, the fermentation raw materials are put into an anaerobic reactor, so that the acid production and methane stages of biogas fermentation are combined into one, and the fermentation process is carried out in the same device. The hydrolysis acidification and methanogenesis of organic matter are completed in the process. This process is suitable for the situation where the fluidity of the feed liquid is good, and is the mo...

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Problems solved by technology

Existing single-phase and two-phase anaerobic fermentation devices have not solved the problem of acid production in dry clean pig manure with high solid content and poor fluidity.

Such as the patent application "anaerobic contact type acid production fermentation hydrogen production reaction equipment" (public number: CN101177660A), the patent "integrated organic wastewater treatment acid production fermentation device" (patent number: ZL98240801.3), the patent "anaerobic acid production "Device" (Patent No.: ZL96204014.2) and so on are only suitable for use under liquid with good fluidity; patent application "Pig Farm Dry Cleaning Manure Two-phase Anaerobic Digestion System" (Publication No.: CN101654321A) etc. The hydrolytic acidification method and device for stacking materials, spraying materials and collecting leachate have not yet solved the problem of viscous pig manure blocking the screen and flowing into the leachate, and the separation of organic acid from viscous pig manure. question

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