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Device and method for preparing biogas by anaerobic fermentation of high-solid-content organic solid waste

A technology for organic solid waste and anaerobic fermentation, applied in solid-phase fermentation bioreactors, biochemical cleaning devices, biochemical equipment and methods, etc., can solve low heat and mass transfer efficiency, difficult material mixing, and easy acid accumulation and other problems, to achieve the effect of high heat and mass transfer efficiency, short start-up period, and high start-up success rate

Inactive Publication Date: 2021-02-09
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the technical problems of extremely difficult material mixing in the existing high-solid-content fermentation reaction device, low heat and mass transfer efficiency, and easy acid accumulation leading to start-up failure, and provides a high-solid-content organic solid waste anaerobic Device and method for preparing biogas by fermentation

Method used

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  • Device and method for preparing biogas by anaerobic fermentation of high-solid-content organic solid waste
  • Device and method for preparing biogas by anaerobic fermentation of high-solid-content organic solid waste
  • Device and method for preparing biogas by anaerobic fermentation of high-solid-content organic solid waste

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Embodiment 1

[0041] Embodiment 1: The device for preparing biogas by anaerobic fermentation of high-solid organic solid waste in this embodiment consists of a main reaction tank 1, a stirring power device 2, a constant temperature water tank 3, a submersible pump 4, a thermometer 5, a pH / ORP electrode 6, The gas flow meter 7, the gas collection bag 8 and the digital display control box 9 also include a liquid seal device 10, a temperature probe 11 and a bracket 12;

[0042] A water bath jacket 1-1 is set on the outer wall of the main reaction tank 1, an inlet 1-2 and an air outlet 1-3 are arranged on the top of the main reaction tank 1, and the side wall and the bottom of the main reaction tank 1 are arranged from top to bottom A plurality of discharge valves 1-4 are set; an electrode inlet 1-5 is also arranged on the side wall of the main reaction tank 1; a thermometer inlet 1-6 and a stirring installation hole 1-6 are also arranged on the top of the main reaction tank 1 7. The total volu...

Embodiment 2

[0055] Embodiment 2: Utilize the method for preparing biogas by anaerobic fermentation of high solid-containing organic solid waste of embodiment 1, carry out according to the following steps:

[0056] 1. Fill the anaerobic granular sludge into the reactor and fill it into the main reaction tank 1 from the feed port 1-2; mix it with domestic garbage, urban sludge and livestock and poultry manure to obtain a substrate with a TS of 30%, C / N ratio of 25:1 high solid organic solid waste organic substrate, according to the initial load of 1.5kgVS / (m 3 .d) Enter the high-solid organic solid waste substrate into the main reaction tank 1 through the feed port 1-2; the initial filling and feeding account for 60% of the volume of the main reaction tank 1, and the high-solid organic solid waste organic bottom The mass ratio of the wet body to the anaerobic granular sludge is 1:1; the submersible pump 4 is started to input the hot water in the constant temperature water tank 3 to the wate...

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Abstract

The invention discloses a device and method for preparing biogas by anaerobic fermentation of high-solid-content organic solid waste, and relates to the technical field of waste recovery. The invention aims to solve the technical problems that materials in the existing high-solid-content fermentation reaction device are extremely difficult to mix, the heat and mass transfer efficiency is low, andacid accumulation is easy to cause starting failure. The device disclosed by the invention comprises a main body reaction tank, a stirring power device, a constant-temperature water tank, a submersible pump, a thermometer, a pH / ORP electrode, a gas flowmeter, a gas collection bag and a digital display control box; the main body reaction tank is provided with a water bath jacket; and the stirring power device comprises an inclined and reversed stirring bearing for increasing radial mixing in the reaction device. Anaerobic granular sludge and a high-solid-content organic solid waste substrate are added into the main body reaction tank; the temperature, the pH value and the ORP value are controlled; furthermore, the organic solid waste load is gradually increased and started; operation is carried out after success; and thereby, the biogas is obtained. The volume fraction of methane in the biogas is not lower than 45%. The device and the method can be used in the field of waste recovery and treatment.

Description

technical field [0001] The invention relates to the technical field of waste recycling, in particular to a process method and a device for anaerobic fermentation of high-solid organic solid waste. Background technique [0002] At present, the development of globalization and industrialization, as well as the improvement of per capita consumption and living standards have promoted the growth of global energy demand. This increase in energy demand and the reduction of fossil resources, as well as the negative environmental pollution caused by the large consumption of fossil fuels, have prompted researchers to The focus is on renewable energy. The organic components of municipal solid waste are one of the unique renewable resources, showing the potential for energy recovery through anaerobic fermentation (AD), and the biogas represented by methane produced during the fermentation process has received extensive attention as a renewable energy source . [0003] Anaerobic digest...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12M1/38C12M1/36C12M1/34C12M1/16C12M1/107C12M1/02C12M1/00C10L3/08C02F11/04
CPCC12M21/04C12M21/16C12M23/36C12M23/48C12M27/02C12M41/22C12M41/26C12M41/28C12M41/44C10L3/08C02F11/04Y02E50/30
Inventor 赵庆良李莉莉王琨丁晶姜珺秋王维业魏亮亮
Owner HARBIN INST OF TECH
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