CN112759448A - Combined fertilizer preparation process method of biomass power plant ash and biogas slurry - Google Patents

Combined fertilizer preparation process method of biomass power plant ash and biogas slurry Download PDF

Info

Publication number
CN112759448A
CN112759448A CN202011595590.9A CN202011595590A CN112759448A CN 112759448 A CN112759448 A CN 112759448A CN 202011595590 A CN202011595590 A CN 202011595590A CN 112759448 A CN112759448 A CN 112759448A
Authority
CN
China
Prior art keywords
biogas slurry
pile
ash
power plant
spraying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011595590.9A
Other languages
Chinese (zh)
Inventor
王强
朱建军
袁旭峰
崔宗均
周月
张雁茹
刘森
高金锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guoneng Tongliao Biological Power Generation Co ltd
NATIONAL BIO ENERGY GROUP CO LTD
Original Assignee
Guoneng Tongliao Biological Power Generation Co ltd
NATIONAL BIO ENERGY GROUP CO LTD
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guoneng Tongliao Biological Power Generation Co ltd, NATIONAL BIO ENERGY GROUP CO LTD filed Critical Guoneng Tongliao Biological Power Generation Co ltd
Priority to CN202011595590.9A priority Critical patent/CN112759448A/en
Publication of CN112759448A publication Critical patent/CN112759448A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D9/00—Other inorganic fertilisers
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
    • C05F17/20—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation using specific microorganisms or substances, e.g. enzymes, for activating or stimulating the treatment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Tropical Medicine & Parasitology (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Biotechnology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microbiology (AREA)
  • Molecular Biology (AREA)
  • Processing Of Solid Wastes (AREA)
  • Fertilizers (AREA)

Abstract

The invention belongs to the technical field of preparation of organic fertilizers, and particularly relates to a combined fertilizer preparation process method of biomass power plant ash and biogas slurry, which comprises the following steps: s1, spraying; s2, fermenting; s3: detecting the water content; in the fermentation process of the mixed material of the ash and the biogas slurry, when the water content is lower than 40%, transferring the mixed material to the spraying and mixing area in the step S1 again, and continuously spraying the biogas slurry until the water content and the carbon-nitrogen ratio of the mixture of the ash and the biogas slurry meet the conditions set in the step S1; s4: when the temperature of the final fermented material is lower than 40 ℃, the mixed material is moved out of the fermentation aeration zone and enters an after-ripening and aging zone; after-ripening is finished, the fermented materials of the after-ripened ash and biogas slurry are finished, and the organic fertilizer is obtained. The organic fertilizer product meeting the NY525 standard is prepared by combining biomass ash and biogas slurry, a large amount of ash can be solved for a biomass power plant, and the biogas slurry problem can be solved for a biogas project.

Description

Combined fertilizer preparation process method of biomass power plant ash and biogas slurry
Technical Field
The invention belongs to the technical field of preparation of organic fertilizers, and particularly relates to a combined fertilizer preparation process method of biomass power plant ash and biogas slurry.
Background
In recent years, the animal husbandry and the planting industry in China are rapidly developed, but a large amount of cultivation waste and planting waste are not effectively treated and utilized, and the method becomes a great problem in environmental management. According to incomplete statistics, the livestock and poultry manure generates about 38-40 hundred million tons each year and the straws generate about 9 hundred million tons in China, so that the method becomes an important cause of agricultural non-point source pollution. The biomass energy is prepared by utilizing organic wastes such as livestock and poultry manure, crop straws and the like, so that on one hand, the energy supply structure in China can be optimized, a distributed renewable clean energy production and consumption system is constructed, and the energy supply is increased; on the other hand, the method can treat urban and rural organic wastes in a large scale and solve the problem of environmental pollution. Therefore, in recent years, biomass energy has been gradually developed in China.
At present, in a plurality of biomass energy fields in China, the technology of straw direct-fired power generation and the engineering for preparing the biogas from livestock and poultry manure is the most mature, and a biomass direct-fired power plant and the biogas engineering are also the most numerous biomass energy projects in China. However, in the biomass direct combustion power generation and biogas project, two remaining disposal problems are faced as bottleneck problems affecting the development of the whole biomass industry. One is biomass direct-combustion power generation combustion residues (ash residues), and currently, the biomass combustion residues are mainly stacked or buried, so that the site is occupied, the environmental pollution is caused, the burden is brought to enterprises on the aspects of economic and social influences, and the development of the biomass power generation industry is restricted; the other is the residues of the biogas project, and a plurality of residues of biogas residues and biogas slurry can be generated in the process of producing the biogas, wherein the preparation of organic fertilizer from the biogas residues is a mature technology, and the produced organic fertilizer has a certain market and is relatively well treated. However, if a large amount of biogas slurry is not effectively utilized, a large amount of resources are wasted, and even serious environmental pollution is caused.
In the prior art, biogas slurry is usually used for farmland irrigation and standard discharge. The cost of standard discharge is higher, so even most biogas projects are provided with biogas slurry treatment facilities, the operation rate is very low. The farmland irrigation of biogas slurry is not popularized in a large range due to the difference of soil and crops in different areas and the environmental protection requirement at present.
However, ash from biomass power plants can be used for fertilizer production due to the fact that the ash contains a certain amount of k elements and trace elements. The organic matter content is required to be more than or equal to 45% by the organic fertilizer industry standard, the organic matter content in ash is extremely low, and the EC value content of the ash is high, so that the ash cannot be directly used as a main raw material for producing the organic fertilizer.
In conclusion, the ash is used as a main raw material to prepare an organic fertilizer product meeting the NY525 standard, and the following problems need to be solved: 1. the organic matter content is improved to more than 45 percent; 2. the EC value content of ash slag is reduced, and the growth of crops is influenced if the EC value content is too high; 3. increase beneficial microorganisms in ash; 4. the degree of decomposition is improved.
Disclosure of Invention
The invention aims to provide an organic fertilizer product which is prepared by combining biomass ash and biogas slurry (the water content is more than or equal to 92%) and meets the NY525 standard, so that a large amount of ash can be solved for a biomass power plant, the biogas slurry problem can be solved for a biogas project, and a way is really found for the largest amount of wastes in the two biomass energy fields.
A combined process method for preparing fertilizer by using biomass power plant ash and biogas slurry comprises the following steps:
s1, spraying:
conveying the ash slag of the power plant to a spraying and mixing area by using a forklift or a belt conveying device, spraying biogas slurry onto the ash slag by using a biogas slurry spraying device until the water content of the mixture of the ash slag and the biogas slurry is 50-60%, and adjusting the carbon-nitrogen ratio to be below 60: 1;
then, one thousandth of decomposing agent is added into the mixture of the ash and the biogas slurry, the mixture is uniformly mixed by a forklift, and the mixed material is transferred to a fermentation aeration area;
s2, fermentation:
standing the mixed material of ash and biogas slurry in a fermentation aeration zone, aerating and fermenting;
when the temperature of the pile is below 50 ℃, only aeration is carried out without turning the pile, and the aeration amount per hour is controlled to be 0.5 times of the volume of the pile or 1.0 time of the volume of the pile; when the temperature of the stack body is increased to be higher than 50 ℃, the stack starts to be turned by a stack turning machine;
s3: detecting the water content;
in the fermentation process of the mixed material of the ash and the biogas slurry, when the water content is lower than 40%, transferring the mixed material to the spraying and mixing area in the step S1 again, and continuously spraying the biogas slurry until the water content and the carbon-nitrogen ratio of the mixture of the ash and the biogas slurry meet the conditions set in the step S1;
when the moisture content of the mixed material is lower than 40%, repeating the step S1 until the organic matter content of the mixed material is more than or equal to 45%, and stopping biogas slurry spraying;
s4: when the temperature of the final fermented material is lower than 40 ℃, the mixed material is moved out of the fermentation aeration zone and enters an after-ripening and aging zone;
detecting the EC value, the germination rate and the moisture once every 2 days after the materials enter an after-ripening area; and when the EC value of the material is less than 2.0ms/cm, the germination rate is more than or equal to 70 percent, and the water content is less than or equal to 30 percent, finishing after-ripening, and finishing the fermentation of after-ripened ash slag and biogas slurry to obtain the organic fertilizer.
Further, in step S1, the decomposing inoculant is prepared from 0-5% by mass of a protease preparation, 10-25% by mass of cellulolytic xylanomonas (xylolytica) with a bacterial count of 10 hundred million/g, 10-25% by mass of Bacillus subtilis with a bacterial count of 10 hundred million/g, 40% by mass of corn meal and 20% by mass of white granulated sugar.
Further, the cellulolytic Xylanimas cellulolysimachia (Xylanimans cellulolytica) is Xylanimas cellulolytica DSM No. 15894);
further, the Bacillus subtilis (Bacillus subtilis) is Bacillus subtilis ACCC No. 03189.
Further, in step S2, when the temperature of the stack rises above 50 ℃, the stack turning by the stack turning machine is started, and the control conditions are as follows:
when the temperature of the pile is between 50 ℃ and 60 ℃, the pile turning frequency is 1 to 2 times per day, and the aeration rate per hour is controlled to be 1.0 time of the volume of the pile or 2.0 times of the volume of the pile;
when the temperature of the pile is between 60 ℃ and 65 ℃, the pile turning frequency is 2 to 3 times per day, and the aeration rate per hour is controlled to be 2.0 times of the volume of the pile or 3.0 times of the volume of the pile;
when the temperature of the pile is between 65 ℃ and 70 ℃, the pile turning times are not less than 3 times per day, and the aeration rate per hour is controlled to be 3.0 times of the volume of the pile or 4.0 times of the volume of the pile.
Further, in step S1, the height of the bulk of the mixed material is controlled to be between 1.0 and 2.5 m.
Further, in the step S3, the water content of the mixed material of ash and biogas slurry is detected once a day in the fermentation process.
Compared with the prior art, the invention has the following beneficial effects: the organic fertilizer product meeting the NY525 standard is prepared by combining biomass ash and biogas slurry (the water content is more than or equal to 92%), so that a large amount of ash can be solved for a biomass power plant, the biogas slurry problem can be solved for a biogas project, and a way is really found for the largest amount of wastes in the two biomass energy fields. At present, the NY525 standard requires that the content of organic matters is more than or equal to 45 percent, and the total nutrients (nitrogen, phosphorus pentoxide and potassium oxide) is more than or equal to 5 percent; the organic fertilizer prepared by the method has the organic matter content of over 60 percent generally and the total nutrient (nitrogen, phosphorus pentoxide and potassium oxide) of over 8 percent. The ash has a loose porous structure, so that nutrients in the biogas slurry can be wrapped by the porous structure in the fermentation process after the biogas slurry and the ash are mixed, and the ash is not easy to degrade and lose in the fermentation process; meanwhile, the biogas slurry is leached on ash slag for many times, and the organic matter content and the total nutrient content in the mixture are continuously increased, so that the organic matter content and the total nutrient (nitrogen, phosphorus pentoxide and potassium oxide) content in the final product are obviously higher than those in the NY525 standard.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The experimental procedures used in the following examples are all conventional procedures unless otherwise specified.
Materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
Example 1
The embodiment adopts the combination of biomass power plant ash and chicken manure biogas slurry to prepare the fertilizer.
Preparation of decomposition agent for chicken manure biogas slurry and ash
The chicken manure is different from pig manure and cow manure, the crude protein content is high, the cellulose content is low, the protease amount added into the decomposing agent of the chicken manure biogas slurry is large, and the Bacillus subtilis ACCC No.03189 is also high in protease activity. Therefore, the decomposition agent of chicken manure biogas slurry and ash is prepared by the following method: the weight ratio of the protease preparation to the Bacillus subtilis is 5 percent of the protease preparation sold in China, 10 hundred million/g of cellulolytic xylan monad (Xylanimonas cellulolytica), 25 percent of Bacillus subtilis, 40 percent of corn flour and 20 percent of white granulated sugar. The cellulolytic xylanase monad (Xylanimonas cellulolytica) is cellulolytic xylanase monad (Xylanimonas cellulolytica) DSM No. 15894; https:// www.dsmz.de); the Bacillus subtilis (Bacillus subtilis) is Bacillus subtilis ACCC No. 03189.
And conveying 100 tons of ash slag with the water content of 10% to a spraying and mixing area by using a forklift or a belt conveying device, opening a biogas slurry spraying device, and uniformly spraying 93.02 tons of chicken manure biogas slurry with the water content of 93% onto the ash slag. The water content of the mixture of the ash and the biogas slurry is 50 percent, and the carbon-nitrogen ratio is adjusted to 55: 1. And then, adding 193Kg of chicken manure biogas slurry decomposing agent into the mixture of the ash and the chicken manure biogas slurry, uniformly mixing by using a forklift, transferring the materials to a fermentation aeration area, and controlling the height of a pile of the mixed materials to be about 1.8 m.
The mixture of ash and chicken manure biogas slurry is firstly kept stand and aerated and fermented in a fermentation aeration zone, and the aeration amount per hour is controlled to be 200m3And h, starting turning the pile by using a pile turning machine when the temperature of the pile body rises to be higher than 50 ℃ about 24 h. The control conditions were as follows: when the temperature of the stack body is between 50 ℃ and 60 ℃, the number of pile turning times per day is 2, and the aeration quantity per hour is controlled to be 300m3H; when the temperature of the pile body is between 60 ℃ and 65 ℃, the pile turning times per day is 3 times, and the aeration rate per hour is controlled to be 400m3H; when the temperature of the pile body is between 65 ℃ and 70 ℃, the pile turning frequency is not less than 3 times per day, and the aeration amount per hour is controlled to be 600m3/h。
And detecting the water content of the mixture of the ash and the chicken manure biogas slurry once a day in the fermentation process. After the materials enter the fermentation aeration zone for 5 days, the water content of the materials is reduced to 35 percent, and the weight of the materials is reduced to 147 tons. The materials are transferred to the spraying and mixing area again, 51.28 tons of chicken manure biogas slurry with the water content of 93 percent are continuously and uniformly sprayed on the materials, then the materials added with the biogas slurry are transferred to the fermentation aeration area again, and the height of the pile of the mixed materials is controlled to be 1.8 m. The control conditions were as follows: when the temperature of the stack body is between 50 ℃ and 60 ℃, the number of pile turning times per day is 2, and the aeration quantity per hour is controlled to be 300m3H; when the temperature of the pile body is between 60 ℃ and 65 ℃, the pile turning times per day is 3 times, and the aeration rate per hour is controlled to be 400m3H; when the temperature of the pile body is between 65 ℃ and 70 ℃, the pile turning frequency is not less than 3 times per day, and the aeration amount per hour is controlled to be 600m3/h。
And when the moisture content of the mixed material is lower than 40%, repeating the steps until the organic matter content of the mixed material is more than or equal to 45%, and stopping the biogas slurry spraying. When the temperature of the final fermented material is lower than 40 ℃, the mixed material is moved out of the fermentation aeration zone and enters an after-ripening and aging zone. After the materials enter the after-ripening area, the EC value, the germination rate and the moisture content are detected every 2 days. And when the EC value of the material is less than 2.0ms/cm, the germination percentage is more than or equal to 70 percent, and the moisture is less than or equal to 30 percent, finishing the after-ripening. The fermentation materials of the after-ripening ash slag and the biogas slurry meet the main indexes of the organic fertilizer.
Example 2
The embodiment adopts the combination of the biomass power plant ash and the cow dung biogas slurry to prepare the fertilizer.
Preparation of decomposing agent for cow dung biogas slurry and ash
As the cow dung is different from pig dung and chicken dung, the content of crude protein is lower, and the content of cellulose is higher, the decomposing agent of the cow dung biogas slurry is added with cellulolytic xylan monad (Xylanimonas cellulolytica) DSM No. 15894; https:// www.dsmz.de). Therefore, the decomposing agent of the cow dung biogas slurry and the ash is prepared by the following method: the mass ratio of the composite material to the corn meal is 25% of cellulolytic xylan monad (Xylanimonas cellulolytica) with the number of bacteria of 10 hundred million/g, 15% of Bacillus subtilis with the number of bacteria of 10 hundred million/g, 40% of corn meal and 20% of white granulated sugar. The cellulolytic xylanase monad (Xylanimonas cellulolytica) is cellulolytic xylanase monad (Xylanimonas cellulolytica) DSM No. 15894; https:// www.dsmz.de); the Bacillus subtilis (Bacillus subtilis) is Bacillus subtilis ACCC No. 03189.
And (3) conveying 10 tons of ash slag with the water content of 10% to a spraying and mixing area by using a forklift or a belt conveying device, opening a biogas slurry spraying device, and uniformly spraying 11.25 tons of cow dung biogas slurry with the water content of 95% to the ash slag. The water content of the mixture of ash and biogas slurry is 55%, and the carbon-nitrogen ratio is adjusted to 50: 1. Then, 21.2Kg of cow dung biogas slurry decomposing agent is added into the mixture of the ash and the cow dung biogas slurry, and after the mixture is mixed and stirred uniformly by a forklift, the mixture is transferred to a fermentation aeration area, and the height of the pile of the mixed material is controlled to be about 2.5 m.
The mixture of ash and cow dung and biogas slurry is firstly kept stand and aerated in a fermentation aeration zoneFermenting with aeration amount of 20m per hour3And h, starting turning the pile by using a pile turning machine when the temperature of the pile body rises to be higher than 50 ℃ about 48 h. The control conditions were as follows: when the temperature of the stack body is between 50 ℃ and 60 ℃, the number of pile turning times per day is 1, and the aeration quantity per hour is controlled to be 30m3H; when the temperature of the pile body is between 60 ℃ and 65 ℃, the pile turning times per day is 2 times, and the aeration rate per hour is controlled to be 35m3H; when the temperature of the pile body is between 65 ℃ and 70 ℃, the pile turning frequency is not less than 2 times per day, and the aeration amount per hour is controlled to be 50m3/h。
And detecting the water content of the mixture of the ash and the cow dung biogas slurry once a day in the fermentation process. After the materials enter the fermentation aeration zone for 7 days, the water content of the materials is reduced to 40 percent, and the weight of the materials is reduced to 16.5 tons. The materials are transferred to the spraying and mixing area again, 6.8 tons of cow dung biogas slurry with the water content of 95% are continuously and uniformly sprayed on the materials, then the materials added with the biogas slurry are transferred to the fermentation aeration area again, and the height of the stack of the mixed materials is controlled to be 2.5 m. The control conditions were as follows: the control conditions were as follows: when the temperature of the stack body is between 50 ℃ and 60 ℃, the number of pile turning times per day is 1, and the aeration quantity per hour is controlled to be 30m3H; when the temperature of the pile body is between 60 ℃ and 65 ℃, the pile turning times per day is 2 times, and the aeration rate per hour is controlled to be 35m3H; when the temperature of the pile body is between 65 ℃ and 70 ℃, the pile turning frequency is not less than 2 times per day, and the aeration amount per hour is controlled to be 50m3/h。
And when the moisture content of the mixed material is lower than 40%, repeating the steps until the organic matter content of the mixed material is more than or equal to 45%, and stopping the biogas slurry spraying. When the temperature of the final fermented material is lower than 40 ℃, the mixed material is moved out of the fermentation aeration zone and enters an after-ripening and aging zone. After the materials enter the after-ripening area, the EC value, the germination rate and the moisture content are detected every 2 days. And when the EC value of the material is less than 2.0ms/cm, the germination percentage is more than or equal to 70 percent, and the moisture is less than or equal to 30 percent, finishing the after-ripening. The fermentation materials of the after-ripening ash slag and the biogas slurry meet the main indexes of the organic fertilizer.
Example 3
The embodiment adopts the combination of the biomass power plant ash and the pig manure biogas slurry to prepare the fertilizer
Preparation of decomposing agent for pig manure biogas slurry and ash
Because the pig manure is different from chicken manure and cow manure and has a certain crude protein content and crude cellulose content, the decomposing agent of the pig manure biogas slurry and ash is prepared by the following method: the weight ratio of the composite material to the protease preparation is 3 percent of the protease preparation sold in China, 15 percent of cellulolytic xylan monad (Xylanimonas cellulolytica) with the number of bacteria of 10 hundred million/g, 22 percent of Bacillus subtilis with the number of bacteria of 10 hundred million/g, 40 percent of corn flour and 20 percent of white granulated sugar. The cellulolytic xylanase monad (Xylanimonas cellulolytica) is cellulolytic xylanase monad (Xylanimonas cellulolytica) DSM No. 15894; https:// www.dsmz.de); the Bacillus subtilis (Bacillus subtilis) is Bacillus subtilis ACCC No. 03189.
And (3) conveying 100 tons of ash slag with the water content of 10% to a spraying and mixing area by using a forklift or a belt conveying device, opening a biogas slurry spraying device, and uniformly spraying 88.9 tons of pig manure biogas slurry with the water content of 95% to the ash slag. The water content of the mixture of the ash and the biogas slurry is 50 percent, and the carbon-nitrogen ratio is adjusted to 58: 1. And then 188Kg of pig manure biogas slurry decomposing agent is added into the mixture of the ash and the pig manure biogas slurry, the mixture is uniformly mixed by a forklift, the material is transferred to a fermentation aeration area, and the height of the pile of the mixed material is controlled to be about 1.5 m.
The mixture of ash and pig manure biogas slurry is firstly kept stand and aerated and fermented in a fermentation aeration zone, and the aeration amount per hour is controlled to be 160m3And h, starting turning the pile by using a pile turning machine when the temperature of the pile body rises to be higher than 50 ℃ about 18 h. The control conditions were as follows: when the temperature of the pile body is between 50 ℃ and 60 ℃, the pile turning times per day is 2 times, and the aeration rate per hour is controlled to be 240m3H; when the temperature of the pile body is between 60 ℃ and 65 ℃, the pile turning times per day is 3 times, and the aeration rate per hour is controlled to be 320m3H; when the temperature of the pile is between 65 ℃ and 70 ℃, the pile turning times are not less than 3 times per day, and the aeration rate per hour is controlled to be 480m3/h。
And detecting the water content of the mixture of the ash and the pig manure biogas slurry once a day in the fermentation process. Material entering hairAfter 6 days in the fermentation aeration zone, the water content of the material is reduced to 38 percent, and the weight of the material is reduced to 153 tons. The materials are transferred to the spraying and mixing area again, the pig manure biogas slurry with the water content of 95% of 48.5 tons is continuously and uniformly sprayed onto the materials, then the materials added with the biogas slurry are transferred to the fermentation aeration area again, and the height of the pile of the mixed materials is controlled to be 1.5 m. The control conditions were as follows: when the temperature of the pile body is between 50 ℃ and 60 ℃, the pile turning times per day is 2 times, and the aeration rate per hour is controlled to be 240m3H; when the temperature of the pile body is between 60 ℃ and 65 ℃, the pile turning times per day is 3 times, and the aeration rate per hour is controlled to be 320m3H; when the temperature of the pile is between 65 ℃ and 70 ℃, the pile turning times are not less than 3 times per day, and the aeration rate per hour is controlled to be 480m3/h。
And when the moisture content of the mixed material is lower than 40%, repeating the steps until the organic matter content of the mixed material is more than or equal to 45%, and stopping the biogas slurry spraying. When the temperature of the final fermented material is lower than 40 ℃, the mixed material is moved out of the fermentation aeration zone and enters an after-ripening and aging zone. After the materials enter the after-ripening area, the EC value, the germination rate and the moisture content are detected every 2 days. And when the EC value of the material is less than 2.0ms/cm, the germination percentage is more than or equal to 70 percent, and the moisture is less than or equal to 30 percent, finishing the after-ripening. The fermentation materials of the after-ripening ash slag and the biogas slurry meet the main indexes of the organic fertilizer.
At present, the NY525 standard requires that the content of organic matters is more than or equal to 45 percent, and the total nutrients (nitrogen, phosphorus pentoxide and potassium oxide) is more than or equal to 5 percent; the organic fertilizer prepared by the method has the organic matter content of over 60 percent generally and the total nutrient (nitrogen, phosphorus pentoxide and potassium oxide) of over 8 percent. The ash has a loose porous structure, so that nutrients in the biogas slurry can be wrapped by the porous structure in the fermentation process after the biogas slurry and the ash are mixed, and the ash is not easy to degrade and lose in the fermentation process; meanwhile, the biogas slurry is leached on ash slag for many times, and the organic matter content and the total nutrient content in the mixture are continuously increased, so that the organic matter content and the total nutrient (nitrogen, phosphorus pentoxide and potassium oxide) content in the final product are obviously higher than those in the NY525 standard.
For specific indexes, refer to the following table:
Figure BDA0002868119400000081
the preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (7)

1. A biomass power plant ash and biogas slurry combined fertilizer making process method is characterized by comprising the following steps:
s1, spraying:
conveying the ash slag of the power plant to a spraying and mixing area by using a forklift or a belt conveying device, spraying biogas slurry onto the ash slag by using a biogas slurry spraying device until the water content of the mixture of the ash slag and the biogas slurry is 50-60%, and adjusting the carbon-nitrogen ratio to be below 60: 1;
then, one thousandth of decomposing agent is added into the mixture of the ash and the biogas slurry, the mixture is uniformly mixed by a forklift, and the mixed material is transferred to a fermentation aeration area;
s2, fermentation:
standing the mixed material of ash and biogas slurry in a fermentation aeration zone, aerating and fermenting;
when the temperature of the pile is below 50 ℃, only aeration is carried out without turning the pile, and the aeration amount per hour is controlled to be 0.5 times of the volume of the pile or 1.0 time of the volume of the pile; when the temperature of the stack body is increased to be higher than 50 ℃, the stack starts to be turned by a stack turning machine;
s3: detecting the water content;
in the fermentation process of the mixed material of the ash and the biogas slurry, when the water content is lower than 40%, transferring the mixed material to the spraying and mixing area in the step S1 again, and continuously spraying the biogas slurry until the water content and the carbon-nitrogen ratio of the mixture of the ash and the biogas slurry meet the conditions set in the step S1;
when the moisture content of the mixed material is lower than 40%, repeating the step S1 until the organic matter content of the mixed material is more than or equal to 45%, and stopping biogas slurry spraying;
s4: when the temperature of the final fermented material is lower than 40 ℃, the mixed material is moved out of the fermentation aeration zone and enters an after-ripening and aging zone;
detecting the EC value, the germination rate and the moisture once every 2 days after the materials enter an after-ripening area; and when the EC value of the material is less than 2.0ms/cm, the germination rate is more than or equal to 70 percent, and the water content is less than or equal to 30 percent, finishing after-ripening, and finishing the fermentation of after-ripened ash slag and biogas slurry to obtain the organic fertilizer.
2. The process method for jointly preparing the fertilizer by using the biomass power plant ash and the biogas slurry as claimed in claim 1, wherein in the step S1, the decomposing inoculant is prepared from 0-5% of protease preparation, 10-25% of cellulolytic xylan monad with the bacterial number of 10 hundred million/g, 10-25% of bacillus subtilis with the bacterial number of 10 hundred million/g, 40% of corn meal and 20% of white granulated sugar in percentage by mass.
3. The process method for preparing the fertilizer by combining the biomass power plant ash and the biogas slurry according to claim 2, wherein the cellulolytic xylanase monad is cellulolytic xylanase monad.
4. The biomass power plant ash and biogas slurry combined fertilizer making process method according to claim 2, wherein the bacillus subtilis is bacillus subtilis.
5. The process method for preparing fertilizer by combining biomass power plant ash and biogas slurry as claimed in claim 1, wherein in step S2, when the temperature of the pile body rises above 50 ℃, the pile starts to be turned by a pile turning machine, and the control conditions are as follows:
when the temperature of the pile is between 50 ℃ and 60 ℃, the pile turning frequency is 1 to 2 times per day, and the aeration rate per hour is controlled to be 1.0 time of the volume of the pile or 2.0 times of the volume of the pile;
when the temperature of the pile is between 60 ℃ and 65 ℃, the pile turning frequency is 2 to 3 times per day, and the aeration rate per hour is controlled to be 2.0 times of the volume of the pile or 3.0 times of the volume of the pile;
when the temperature of the pile is between 65 ℃ and 70 ℃, the pile turning times are not less than 3 times per day, and the aeration rate per hour is controlled to be 3.0 times of the volume of the pile or 4.0 times of the volume of the pile.
6. The process method for preparing fertilizer by combining biomass power plant ash and biogas slurry according to claim 1, wherein in step S1, the height of the pile of the mixed material is controlled to be 1.0-2.5 m.
7. The process method for preparing fertilizer by combining biomass power plant ash and biogas slurry as claimed in claim 1, wherein in step S3, the water content of the mixture of ash and biogas slurry is detected once a day during the fermentation process.
CN202011595590.9A 2020-12-29 2020-12-29 Combined fertilizer preparation process method of biomass power plant ash and biogas slurry Pending CN112759448A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011595590.9A CN112759448A (en) 2020-12-29 2020-12-29 Combined fertilizer preparation process method of biomass power plant ash and biogas slurry

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011595590.9A CN112759448A (en) 2020-12-29 2020-12-29 Combined fertilizer preparation process method of biomass power plant ash and biogas slurry

Publications (1)

Publication Number Publication Date
CN112759448A true CN112759448A (en) 2021-05-07

Family

ID=75696904

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011595590.9A Pending CN112759448A (en) 2020-12-29 2020-12-29 Combined fertilizer preparation process method of biomass power plant ash and biogas slurry

Country Status (1)

Country Link
CN (1) CN112759448A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102887754A (en) * 2012-11-05 2013-01-23 师宗海利食品有限责任公司 Process for producing marsh gas and bioorganic fertilizer by utilizing tobacco waste
CN111718021A (en) * 2019-03-20 2020-09-29 光大绿色环保管理（深圳）有限公司 Biogas slurry treatment device and method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102887754A (en) * 2012-11-05 2013-01-23 师宗海利食品有限责任公司 Process for producing marsh gas and bioorganic fertilizer by utilizing tobacco waste
CN111718021A (en) * 2019-03-20 2020-09-29 光大绿色环保管理（深圳）有限公司 Biogas slurry treatment device and method

Similar Documents

Publication Publication Date Title
CN104671860A (en) Bioorganic fertilizer using agricultural waste as raw materials and preparation method of bioorganic fertilizer
CN101255074B (en) Novel method for comprehensive utilization of banana haulm by-product
CN105237298A (en) Citrus reticulata blanco compound fertilizer and production method thereof
CN102432356A (en) Method for producing specialized organic fertilizer for protected cultivation by silkworm excrement fermentation
CN105948841B (en) Organic fertilizer tank type fermentation method taking mushroom dregs as substrate
CN106946630A (en) A kind of organic fungi-manure using sludge as raw material and preparation method thereof
CN109134008A (en) A method of organic fertilizer is prepared using microorganism decomposition pig manure
CN103771924B (en) A kind of flower planting fertilizer special for organic and preparation method thereof
CN112645760A (en) Preparation method of organic fertilizer
CN114230385A (en) Special microbial fertilizer for sweet sorghum in saline-alkali soil and preparation method thereof
CN104926535A (en) Spirulina peptide bio-organic fertilizer
CN104973967A (en) Nutritional additive used for increasing soil fertility and used in crop seedling period, and preparation method thereof
CN106631396A (en) Corn stalk ferment fertilizer for long-stalk crops
CN112209748A (en) Selenium-rich microbial organic fertilizer special for melons and fruits and preparation method thereof
CN111777440A (en) Method for producing organic fertilizer by fermenting corn straws and cow dung
CN110698298A (en) Rice base fertilizer prepared from agricultural wastes
CN1276362A (en) Organic base fertilizer and preparing process thereof
CN110054514A (en) A kind of agricultural wastes and livestock and poultry feces combine the method for preparing organic fertilizer
CN103172420A (en) Broad-spectrum applicable organic material decomposition agent
CN104987217A (en) Fiber-based fertilizer
CN110760547B (en) Method for treating waste navel oranges based on fruit-pig-marsh-fruit-fish in-situ closed-loop digestion
CN112759448A (en) Combined fertilizer preparation process method of biomass power plant ash and biogas slurry
CN116332682A (en) Compound fertilizer for crop planting and preparation method thereof
CN107298596A (en) A kind of method that straw-returning is carried out using biochemical technology
CN112592221A (en) Preparation method of novel organic straw fertilizer

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20210507

RJ01 Rejection of invention patent application after publication