Anaerobic fermentation compound additive and method for promoting biogas residue and biogas liquid fertilizer anaerobic fermentation

A compound additive, anaerobic fermentation technology, applied in urea compound fertilizer, organic fertilizer, inorganic fertilizer and other directions, can solve the problems of high pollution degree of biogas slurry, less substrate degradation, low gas production rate, etc., to improve the fermentation environment, The effect of promoting degradation and increasing gas production

Active Publication Date: 2017-11-10
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Application Information

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Problems solved by technology

[0007] In order to solve the above defects in the prior art, the present invention aims to solve the problems of low gas production rate, low substrate degradation, high pollution of biogas residue and biogas slurry, and low fertilizer efficiency in the fermentation process.

Method used

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  • Anaerobic fermentation compound additive and method for promoting biogas residue and biogas liquid fertilizer anaerobic fermentation
  • Anaerobic fermentation compound additive and method for promoting biogas residue and biogas liquid fertilizer anaerobic fermentation
  • Anaerobic fermentation compound additive and method for promoting biogas residue and biogas liquid fertilizer anaerobic fermentation

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preparation example Construction

[0041] The preparation method of the anaerobic fermentation compound additive provided by the present invention:

[0042] Mix 58-160 parts of trace element additives, 10-65 parts of organic additives, 82-246 parts of mineral nutrient additives, and 94-215 parts of industrial waste slag additives at room temperature. Oxygen fermentation compound additive.

[0043] Among them, the trace element additives include the following raw materials by mass: 20-100 parts of ferrous chloride; 10-80 parts of nickel chloride; 20-85 parts of ferrous sulfate; 20-75 parts of cobalt sulfate; 25-90 parts of iron nitrate Parts; 30-70 parts of cobalt nitrate.

[0044] Among them, the organic additives include the following raw materials in parts by mass: 5-28 parts of urea; 10-50 parts of ammonium dihydrogen phosphate; 10-45 parts of citric acid.

[0045] Among them, the mineral nutrient additives include the following parts by mass of raw materials: 65-210 parts of plant ash; 40-150 parts of activated ca...

Embodiment 1

[0057] (1) Preparation of anaerobic fermentation compound additives:

[0058] Trace element additives, 30 parts of ferrous chloride, 45 parts of nickel chloride, 45 parts of ferrous sulfate, 75 parts of cobalt sulfate, 90 parts of iron nitrate, 70 parts of cobalt nitrate; organic additives: 5 parts of urea, 10 parts of diammonium hydrogen phosphate , 45 parts of citric acid; 165 parts of mineral nutrient additives, plant ash, 40 parts of activated carbon, 165 parts of bentonite; 15 parts of industrial waste slag additives, low-carbon steel slag microcrystalline powder, and 90 parts of medium-carbon steel steel slag microcrystalline powder.

[0059] (2) Start the fermentation system to produce biogas and collect biogas residue and liquid:

[0060] Mix 200 parts of poultry manure and 350 parts of inoculum sludge according to the mass parts, add 260 parts of compound additives to prepare a fermentation feed liquid, adjust the fermentation feed liquid to a solid content of 6% and a pH of...

Embodiment 2

[0065] (1) Preparation of anaerobic fermentation compound additives:

[0066] Trace element additives, 85 parts of ferrous chloride, 10 parts of nickel chloride, 85 parts of ferrous sulfate, 20 parts of cobalt sulfate, 40 parts of iron nitrate, 45 parts of cobalt nitrate; 28 parts of organic additives urea, 25 parts of diammonium hydrogen phosphate , 20 parts of citric acid; 210 parts of mineral nutrient additive plant ash, 150 parts of activated carbon, 100 parts of bentonite; industrial waste slag additive 50 parts of low-carbon steel slag microcrystalline powder, and 25 parts of medium carbon steel slag microcrystalline powder.

[0067] (2) Start the fermentation system to produce biogas and collect biogas residue and liquid:

[0068] According to mass parts, 350 parts of poultry manure and 500 parts of inoculum sludge were mixed, and 385 parts of compound additives were added to prepare a fermentation feed liquid. The fermentation feed liquid was adjusted to a solid content of 8%...

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Abstract

The invention discloses an anaerobic fermentation compound additive and a method for promoting biogas residue and biogas liquid fertilizer anaerobic fermentation. The compound additive is prepared from 58-160 parts of microelement additives, 10-65 parts of organic additives, 82-246 parts of mineral nutrient additives and 94-215 parts of industrial waste residue additives. Anaerobic fermentation is performed by mixing the compound additive with a substrate, and therefore biogas output and an organic matter degradation rate are dramatically increased. Meanwhile, both chemical oxygen demand and the Kjeldahl nitrogen content of biogas residues and biogas liquid which are obtained from a fermentation system to which the compound additive is introduced are reduced, and the biogas residue and biogas liquid stability is also improved. The biogas residues and the biogas liquid have high contents of nitrogen, phosphorus, potassium and microelements. By the application of the fertilizer, the yield of crops is increased, and at the same time, the problems such as soil hardening degradation, environment pollution, toxic gas emission of manure application and insect pest and plant disease spread caused by chemical fertilizer application are effectively resolved.

Description

Technical field [0001] The invention belongs to the field of organic solid waste resource utilization, and specifically relates to a method for the preparation of an anaerobic fermentation composite additive and the utilization of biogas residue and biogas liquid fertilizer. Background technique [0002] As my country's social and economic development consumes various resources and energy, the environmental and energy situation has become increasingly severe. According to statistics, the country produces about 3.8 billion tons of livestock manure every year, with a comprehensive utilization rate of less than 60%. In addition, my country’s urban sewage discharge is also growing at an annual growth rate of 2.4 billion cubic meters. It is predicted that by 2030, my country’s urban sewage discharge will rise to 88.4 billion cubic meters, while the sewage treatment rate is only 34%. In 2016, the No. 1 Central Committee Document, the Fifth Plenary Session of the 18th Central Committee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
CPCC05B7/00C05G3/00C05C5/00C05C9/00C05D1/00C05D9/00C05D9/02C05F3/00C05F7/00C05F11/08
Inventor 云斯宁张琛
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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