Device and method for preparing biogas and organic fertilizer from biomass through coupling of aerobic fermentation and anaerobic digestion

A technology of anaerobic digestion and aerobic fermentation, which is applied in the field of fertilizer and biomass energy, and can solve the problems of secondary pollution of odor, low gas production rate, single resource utilization mode, etc.

Pending Publication Date: 2018-08-24
南宁绿智环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional utilization method is mostly bar stack or tank type aerobic fermentation process to make fertilizer, the fermentation efficiency is low, it is easy to cause secondary pollution of odor, and the resource utilization method is single. However, the biogas prepared by traditional anaerobic ferment

Method used

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  • Device and method for preparing biogas and organic fertilizer from biomass through coupling of aerobic fermentation and anaerobic digestion
  • Device and method for preparing biogas and organic fertilizer from biomass through coupling of aerobic fermentation and anaerobic digestion
  • Device and method for preparing biogas and organic fertilizer from biomass through coupling of aerobic fermentation and anaerobic digestion

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Experimental program
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Effect test

Embodiment 1

[0067](1) Chinese herbal medicine residues are classified by grading equipment, and the long fibers enter the first-level high-humidity solid organic matter pulverizer for first-level pulverization treatment to 40-60 mesh, and then enter the blender, and the aerobic fermentation agent (yeast) is added from the batcher , Bacillus licheniformis, Brevibacillus sporogenes, Bacillus amyloliquefaciens, Trichoderma composite bacterial agent), nutrient salts (N, P, K), evenly mixed with filter residue and returned materials, and then sent to solid organic matter for aerobic pressurized high-temperature fermentation The tank is subjected to aerobic fermentation and fermentation treatment, and the aerobic fermentation product enters the secondary high-humidity solid organic matter pulverizer for crushing treatment to 20-30 mesh and then puts it into the slurry mixing tank, and the batching machine adds anaerobic fermentation bacteria agent (cellulolytic bacteria, semi Cellulolytic bacter...

Embodiment 2

[0078] A method for aerobic fermentation coupled with anaerobic digestion of biomass to prepare biogas and organic fertilizer, the method steps are: solid biomass is classified by a classification device, and long fibers enter a first-level high-humidity solid organic matter pulverizer for crushing and then enter Mixer, at the same time, add aerobic fermentation bacteria and nutrient salts including N, P and K to the mixer from the first batcher, and send them into the aerobic pressurized high-temperature fermenter for solid organic matter after being uniform in the mixer Carry out aerobic decomposing and fermentation treatment to obtain aerobic fermentation products; aerobic fermentation products enter the secondary high-humidity solid organic matter pulverizer for crushing treatment and then put into the mixing tank, and at the same time add mixing water into the mixing tank by the second batching machine , anaerobic fermentation bacteria agent, and nutrient salts including N...

Embodiment 3

[0089] A device for preparing biogas and organic fertilizer by coupling aerobic fermentation with anaerobic digestion of biomass, including a classification device 101, a first-stage high-humidity solid organic matter pulverizer 102, a mixer 103, an aerobic pressurized high-temperature fermenter for solid organic matter 104, Secondary high-humidity solid organic pulverizer 105, mixing tank 106, multi-stage self-circulating anaerobic digestion reactor 107, multi-stage vortex self-circulating anaerobic reactor 108 and vortex self-circulating anaerobic reactor 109,

[0090] The long fiber discharge port of the classification device 101 is connected to the feed port of the primary high-humidity solid organic pulverizer 102, and the discharge port of the primary high-humidity solid organic pulverizer 102 is connected to the feed port of the mixer 103. The discharge port of the mixer 103 is connected to the feed port of the solid organic matter aerobic pressurized high-temperature fe...

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Abstract

The invention discloses a device and a method for preparing biogas and organic fertilizer from biomass through coupling of aerobic fermentation and anaerobic digestion. The method comprises the stepsas follows: solid biomass is classified by classification equipment, long fibers are crushed and then enter a mixer, aerobic composting fermentation treatment is performed after the long fibers are mixed uniformly in the mixer, and an aerobic fermented product is obtained; the aerobic fermented product is crushed, then put in a size mixing tank to be uniformly mixed and pumped in a multi-stage self-circulating anaerobic digestion reactor, effluent enters a multi-stage vortex self-circulating anaerobic reactor and a vortex self-circulating anaerobic reactor step by step to be subjected to anaerobic fermentation for production of biogas, and finally, the biogas is sent to an aerobic process section for deep treatment. As for the characteristic that high-humidity and long fibers exist in biomass materials, crushing pretreatment is performed firstly, high-temperature composting treatment is performed, the higher material temperature can be obtained without heating, no chemical decomposition agents are added, organic fertilizer can be quickly prepared through high-temperature fermentation, and the conversion rate of the materials can be higher in the following multi-stage anaerobic biogas preparation devices.

Description

technical field [0001] The invention relates to the technical field of biomass energy conversion and fertilizer conversion, in particular to a device and method for preparing biogas and organic fertilizer by coupling aerobic fermentation with anaerobic digestion of biomass. technical background [0002] A large amount of biomass waste is produced in the process of industrial and agricultural production, including Chinese herbal medicine dregs, rice straw, mulberry sticks, corn stalks, wheat straw, tobacco stalks, grass stalks, rice husks, sugarcane bagasse, cassava slag, dung dregs, fungus sticks, Wood chaff, bran, tree branches, bio-fermentation slag, livestock and poultry manure, etc., will cause serious secondary pollution to the environment if they are not disposed of scientifically and rationally. And these biomasses are rich in a large amount of organic matter, which is a rich and valuable energy and fertilizer raw material resource. The traditional utilization method...

Claims

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Application Information

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IPC IPC(8): C12P5/02C12M1/107C02F11/04C05F15/00C05F17/00C05F17/02A23K10/12A23N17/00
CPCA23K10/12A23N17/00C12M21/04C12M23/34C12M23/58C12M27/20C12M29/06C12M29/08C12M29/18C12M45/02C12P5/023C02F11/04C05F11/00C05F17/00C05F17/90C05F11/08Y02P20/145Y02E50/30Y02W30/40
Inventor 卢誉远熊庆明林应强周淑珍林叶俊龙
Owner 南宁绿智环保科技有限公司
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