CN111153715A - Equipment and process for treating livestock and poultry manure by subcritical water technology - Google Patents
Equipment and process for treating livestock and poultry manure by subcritical water technology Download PDFInfo
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- CN111153715A CN111153715A CN202010076437.9A CN202010076437A CN111153715A CN 111153715 A CN111153715 A CN 111153715A CN 202010076437 A CN202010076437 A CN 202010076437A CN 111153715 A CN111153715 A CN 111153715A
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Classifications
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F3/00—Fertilisers from human or animal excrements, e.g. manure
- C05F3/06—Apparatus for the manufacture
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Fertilizers (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses equipment and a process for treating livestock and poultry manure by a subcritical water technology. The sewage and the waste gas are respectively treated by the water treatment system and the waste gas treatment system and then discharged and recovered; the boiler provides steam to the reaction kettle to carry out high-temperature and high-pressure subcritical water reaction treatment on the dry manure material so as to extract the nutrient essence in the dry manure, wherein carbohydrate, fat and the like can be decomposed into glucose characteristic substances with short chain groups, protein is decomposed into amino acid, various trace harmful chemical substances and odor can be decomposed, pathogens and viruses are killed, and finally the organic fertilizer is prepared, so that the resource waste is avoided, and the resource recovery and the reutilization of waste organic matters are realized.
Description
Technical Field
The invention relates to the technical field of livestock and poultry manure treatment, in particular to equipment and a process for treating livestock and poultry manure by a subcritical water technology.
Background
With the rapid development of the breeding industry in China, the production amount of livestock and poultry manure and the waste urine water of a farm is increased day by day, the livestock and poultry manure and the waste urine water of the farm contain heavy metals, pathogenic microorganisms and the like, secondary pollution is easily caused, and meanwhile, the livestock and poultry manure and the waste urine water of the farm contain more organic matters, so that the resource utilization value is high.
The livestock and poultry feces are directly exposed to the nature without being treated, and four categories of 'atmospheric odor pollution, water system pollution, soil pollution, biological pollution' and the like are caused.
Subcritical water has very large ion capacity, and thus has strong decomposition capability on organic matters. By utilizing subcritical water reaction treatment, the nutrient essence in organic waste in the livestock and poultry manure can be extracted, wherein carbohydrate, fat and the like can be decomposed into glucose characteristic substances with short chain groups, protein can be decomposed into amino acid, various trace harmful chemical substances can be decomposed, and pathogens and viruses can be killed. Therefore, the livestock and poultry manure is treated by the latest regeneration process of subcritical hydrothermal decomposition, and the obtained terminal resource products are safe fertilizers without harmful microorganisms and feeds for livestock, animals, aquatic products and the like.
The person skilled in the art is dedicated to solving the above technical drawbacks.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the technical object of the invention is to solve the problem of contamination with manure.
In order to realize the technical purpose, the invention provides equipment for treating livestock and poultry manure by a subcritical water technology, which at least comprises a stainless steel fence, a homogenizing tank, a dry-wet separator, a sewage treatment system, a dry manure storage tank, a metering tank, a reaction kettle, a pressure-relief absorption tank, a collection tank, a biological high-temperature fermentation bin, a drying unit, a mixing tank, a finished product tank and a finished product packaging unit.
Preferably, the homogenizing pool is additionally provided with a glass fiber reinforced plastic cover, and the homogenizing working section is in a negative pressure environment.
Preferably, the dry manure storage tank has a pneumatic arch breaking function.
Preferably, the metering tank is used for converting the metering weight of the dry manure into the volume of the control material, and the control set value for metering the volume of the dry manure every time is 4.2-4.5 cubic meters.
Preferably, the reaction kettle has the functions of regenerating waste organic matter resources of high temperature and high pressure and positive and negative stirring materials.
Preferably, the collection tank has the functions of collecting the discharged materials of the reaction kettle and preserving heat.
Preferably, the finished product tank is connected with a packaging unit device with automatic bag filling, metering, bag sewing and stacking functions and a naked organic fertilizer finished product warehouse.
The invention also provides a process for treating livestock and poultry manure by using the subcritical water technology, which comprises the following steps:
s1, collecting and transporting the livestock and poultry manure through a special manure collecting vehicle;
step S2, the collected livestock and poultry manure enters a homogenizing tank to be homogenized;
s3, carrying out dry-wet separation on the livestock and poultry manure after homogenization, conveying the separated solid dry manure to a dry manure storage tank, and conveying the separated manure sewage to a water treatment system for disposal;
step S4, conveying the dry manure to a metering tank through a dry manure storage tank;
s5, conveying the metered dry manure to a subcritical water treatment device, namely a reaction kettle, and performing resource regeneration treatment;
s6, collecting, stirring and drying the dry materials obtained by resource regeneration treatment and auxiliary materials to obtain the basic organic fertilizer; the pressure relief pressure is handled by the absorption cell before the reation kettle ejection of compact.
In step S2, the livestock and poultry manure enters the homogenizing tank after impurities are filtered out by a stainless steel fence before entering the homogenizing tank.
Fermenting the dry materials and the auxiliary materials through a biological fermentation bin before gathering in the step S6; and (4) after the dry materials and the auxiliary materials are gathered, stirred and dried to form the organic fertilizer, packaging and storing finished products.
In step S6, the liquid in the absorption tank is finally recovered and discharged after being treated by water; the obtained gas is treated by a gas treatment system combining a spray tower, a light deodorization system and a biological bacteria room and then is discharged; the obtained heat is utilized in the anaerobic fermentation step of the water supply treatment system.
The invention has the beneficial effects that:
due to the structural design and the process, sewage and waste gas are respectively treated by the water treatment system and the gas treatment system and then discharged and recovered; steam is supplied to the reaction kettle by the boiler to carry out high-temperature and high-pressure (>1.6MPa and 200 ℃) subcritical water reaction treatment on the dry manure material so as to extract nutrient essence in the dry manure, wherein carbohydrate, fat and the like can be decomposed into glucose characteristic substances with short chain groups, protein is decomposed into amino acid, various trace harmful chemical substances and odor can be decomposed, pathogens and viruses are killed, and finally organic fertilizer is prepared, so that resource waste is avoided, and resource recycling of waste organic matters is realized.
Drawings
FIG. 1 is a schematic diagram of the inventive apparatus arrangement;
FIG. 2 is a flow diagram of the inventive process;
FIG. 3 is a flow chart of a part of sewage treatment of the invention;
FIG. 4 is a flow diagram of a portion of the inventive exhaust treatment.
Detailed Description
The conception, the specific structure and the technical effects of the invention will be further described with reference to the accompanying drawings so as to fully understand the objects, the features and the effects of the invention.
Example (b):
as shown in figures 1-4, the equipment for treating livestock and poultry manure by the subcritical water technology at least comprises a homogenizing tank, a dry-wet separator, a sewage treatment system, a dry material storage tank, a metering tank, a reaction kettle, a collecting tank, a biological high-temperature fermentation bin, a drying unit, a mixing tank, a finished product tank and a packaging unit which are arranged according to a process sequence.
Specifically, install glass steel arch cover additional on the homogenate pond, the topmost of arch cover is equipped with the gas vent pipeline, is connected with odor treatment system. The homogenizing section is in a negative pressure environment.
Specifically, the dry manure storage tank has a pneumatic arch breaking function.
Specifically, the metering tank controls the volume of the dry manure material through the conversion of the weight of the dry manure, and the control set value for metering the volume of the dry manure every time is 4.2-4.5 cubic.
Specifically, the reaction kettle collecting tank has the functions of preserving heat and preventing materials from condensing and producing water.
Specifically, the finished product tank is connected with machine equipment with automatic bagging and metering, bag sewing and stacking functions and a naked organic fertilizer warehouse.
The invention relates to a process for treating livestock and poultry manure by using a subcritical water technology, which comprises the following steps of:
s1, collecting and transporting the livestock and poultry manure through a manure collecting vehicle;
step S2, the livestock and poultry manure enters a homogenizing tank to be homogenized;
s3, carrying out dry-wet separation on the livestock and poultry manure after homogenization, conveying the separated solid dry manure to a dry manure storage tank, and conveying the separated liquid sewage to a water treatment system for disposal;
step S4, conveying the dry manure to a metering tank through a dry manure storage tank;
s5, conveying the metered dry manure to a subcritical water treatment device, namely a reaction kettle, and performing resource regeneration treatment;
s6, collecting, stirring and drying the obtained dry materials and auxiliary materials to obtain a basic organic fertilizer; and discharging the pressure relief pressure of the reaction kettle before discharging to an absorption tank for treatment.
In a specific implementation, the above steps may specifically be:
the special collection vehicle for the livestock and poultry feces adopts sealed collection and transportation (wet feces is in a pumping canning mode, dry feces is in a bulk box mode), and the feces is collected and transported to a treatment plant and is butted with a discharge receiving port of a homogenizing pool for discharging. The raw material receiving workshop is in a negative pressure environment;
the livestock and poultry dung (the average water content is about 82%) is filtered by a stainless steel fence under the action of gravity and fluid to remove impurities (mainly plastic medicine bottles mixed in the dung) and then enters a homogenizing tank, and the water content of the material is adjusted by adding reuse water (the reuse water and the workshop section cleaning water are supplied by a water treatment workshop section) and then is homogenized. A glass fiber reinforced plastic cover is additionally arranged on the homogenizing tank, and the homogenizing working section is in a negative pressure environment;
the homogenized excrement (the water content is about 92 percent) is conveyed to a special dry-wet separator through a rotor pump for solid-liquid separation of the excrement, and the powdery solid excrement (hereinafter referred to as dry excrement) and the excrement sewage are formed after the dry-wet separation of the excrement. The dry feces are conveyed to a stainless steel dry feces storage tank through a pipe chain, and the feces sewage is conveyed to a sewage treatment system by a pump for disposal and utilization. The dry-wet solid-liquid separation section is in a negative pressure environment;
the dry manure storage tank (main manure storage equipment of a treatment plant, manure collected by a treatment center is mainly stored and produced in a dry manure form) has a pneumatic arch breaking function, and dry manure stored in the tank can be supplied to the metering tank at any time through a (screw and pipe chain combined) conveying mechanism according to a demand instruction;
the metering tank is used for controlling the volume of the material by converting the metering weight of the dry manure, the control set value for metering the volume of the dry manure every time is 4.2-4.5 cubic, and the metered dry manure can be conveyed into a 6 cubic subcritical water reaction kettle at one time (by a pipe chain);
steam is provided by a boiler to perform subcritical water high-temperature high-pressure (>1.6MPa, 200 ℃) reaction treatment on dry manure materials to extract nutrient essence in the dry manure, wherein carbohydrate, fat and the like can be decomposed into glucose characteristic substances with short chain groups, protein is decomposed into amino acid, various trace harmful chemical substances and odor can be decomposed, and pathogens and viruses are killed. The steam supplied by the boiler to the reaction kettle is a production control mode for intermittently supplying water vapor to the reaction kettle;
the treated (temperature is more than 100 ℃, semi-finished organic fertilizer) materials are discharged into a material collecting tank for storage through a discharging valve of a reaction kettle at one time, the discharging valve is closed in sequence after the reaction kettle is quickly emptied of the materials, then the feeding valve is opened, then dry manure is supplied into the kettle from a metering tank, and after the dry manure is emptied from the metering tank, dry manure is supplied to the metering tank from a storage tank for metering; the treatment process from the dry manure storage tank to the reaction kettle is circulated and repeated;
the collecting tank (with the functions of heat preservation and dew point condensation prevention) connected with the discharging valve of the reaction kettle is matched with the conveying system, the capacity of the collecting tank can accept the one-time complete discharging of the reaction kettle, the continuous and balanced emptying of materials is realized within the one-time treatment cycle time from the feeding to the discharging of the reaction kettle, and the temperature of the materials is kept to be sent into the biological bin.
After-ripening, functional and drying treatment (about 4 hours) is carried out on the material by adding high-temperature biological fermentation bacteria or other functional biological bacteria into the biological bin, the organic fertilizer after-ripening and drying is sent into a pneumatic drying furnace according to instructions to be dried, and the organic fertilizer is continuously output after being used as the main material of the organic fertilizer. The main organic fertilizer ingredients are conveyed into a stirrer by a conveying mechanism, and are uniformly mixed and stirred with the auxiliary organic fertilizer ingredients until the main organic fertilizer ingredients become high-quality organic fertilizer finished products and are output;
the boiler fuel for generating subcritical water vapor is supplied from the combustible gas obtained by gasifying biomass. After being crushed, biomass gasification slag materials (ideal organic fertilizer and carbon auxiliary materials) are stored in an auxiliary material tank, and are conveyed to a stirrer by the other way (pipe chain) conveyor according to the specified given amount (about 10-12% of the weight of the main material) to be stirred and uniformly mixed with the organic fertilizer main material;
other nutrient auxiliary material tank adding systems are additionally provided, and a special one-way conveyor is used for giving a given amount according to instructions (according to the requirements of specific nutrients of organic fertilizers or special fertilizers of special crop nutrients and trace elements, or organic and inorganic fertilizer varieties with requirements in the production market) and conveying the organic fertilizers to a stirrer to be uniformly added with the organic fertilizers and stirred to form organic and inorganic fertilizers or special fertilizer products;
the material (main material) after the subcritical water reaction kettle resource regeneration and biomass gasification slag (auxiliary material) are gathered and stirred uniformly to obtain a basic product organic fertilizer, (the stirring section adds nutrients according to the requirements to produce special organic fertilizer products or produce new organic and inorganic fertilizer varieties according to the market requirements), and then the organic fertilizer is conveyed to a finished product tank by a conveyor;
the finished product tank is connected with machine equipment with automatic filling, bag sewing and stacking functions, a naked organic fertilizer warehouse and the like, and manual work is assisted to complete the packaging, storage, loading and delivery of the organic fertilizer finished products;
before the reaction kettle discharges materials, the reaction kettle enters a procedure of discharging water vapor pressure in the kettle, the pressure and gas discharged by pressure relief are discharged into the water bottom of an absorption water pool through a pipeline, and the pressure, noise, heat and peculiar smell are absorbed by the water in the pool. The emitted peculiar smell gas is slowly released through a water body, the absorption water pool is sealed by a glass fiber reinforced plastic circular arch body, the topmost end of the sealed arch body is provided with an exhaust port connecting pipeline, the exhausted gas is sucked by an exhaust fan, and is discharged to the high altitude by a (15 m) chimney after being subjected to combined deodorization treatment of cooling by a spray tower, light deodorization and a biological bacteria room;
the sewage generated after the feces are subjected to dry-wet separation is sent to a water treatment system by a pump, is subjected to aeration, pH value adjustment, Fenton oxidation reaction, flotation, PAM flocculation, re-flotation, anaerobic treatment, aerobic treatment, nitrification and denitrification biochemical treatment, quartz sand filtration, ozone disinfection and other links or selected part of treatment links, and finally meets the requirement of reuse water or is brought into a sewage discharge system.
The foregoing has described in detail preferred embodiments of the invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the above teachings. Therefore, the technical solutions available to those skilled in the art through logical analysis, reasoning or limited experiments based on the inventive concepts are all within the scope of protection defined by the claims.
Claims (10)
1. The utility model provides an equipment that beasts and birds excrement is dirty is handled to subcritical water technique which characterized in that: the device at least comprises a homogenizing pool, a dry-wet separator, a water treatment system, a dry excrement storage tank, a metering tank, a reaction kettle, a collecting tank, a filtering tank, a biological high-temperature fermentation bin, a drying unit, an auxiliary material tank, a nutrient tank, a mixing tank, a finished product tank and a packaging unit which are arranged according to a process sequence.
2. The apparatus for treating livestock and poultry manure by using subcritical water technology according to claim 1, wherein: the homogenizing tank is additionally provided with a glass fiber reinforced plastic cover, and the homogenizing working section is in a negative pressure environment.
3. The apparatus for treating livestock and poultry manure by using subcritical water technology according to claim 1, wherein: the dry manure storage tank has a pneumatic arch breaking function.
4. The apparatus for treating livestock and poultry manure by using subcritical water technology according to claim 1, wherein: the metering tank is used for converting the metering weight of the dry manure into the volume of the control material, and the control set value for metering the volume of the dry manure every time is 4.2-4.5 cubic meters.
5. The apparatus for treating livestock and poultry manure by using subcritical water technology according to claim 1, wherein: the reaction kettle collecting tank has a heat preservation function.
6. The apparatus for treating livestock and poultry manure by using subcritical water technology according to claim 1, wherein: the finished product tank is connected with machine equipment with automatic filling, bag sewing and stacking functions and a naked organic fertilizer warehouse.
7. A process for treating livestock and poultry manure by using a subcritical water technology comprises the following steps:
s1, collecting and transporting the livestock and poultry manure through a manure collecting vehicle;
step S2, the livestock and poultry manure enters a homogenizing tank to be homogenized;
s3, carrying out dry-wet separation on the homogenized livestock and poultry manure, conveying the solid dry manure subjected to dry-wet separation to a dry manure storage tank, and conveying the sewage subjected to dry-wet separation to a water treatment system for disposal;
step S4, conveying the dry manure to a metering tank through a dry manure storage tank;
s5, conveying the metered dry manure to a subcritical water treatment device, namely a reaction kettle, and performing resource regeneration treatment;
s6, collecting, stirring and drying the obtained dry materials and auxiliary materials to obtain a basic organic fertilizer; and conveying pressure, waste gas, waste heat and noise generated by pressure relief of the reaction kettle to an absorption tank for treatment.
8. The process for treating livestock and poultry manure by using the subcritical water technology according to claim 7, wherein in step S2, the livestock and poultry manure enters the homogenizing tank after impurities are filtered by a stainless steel fence before entering the homogenizing tank.
9. The process for treating livestock and poultry manure by using the subcritical water technology according to claim 7, wherein in step S6, fermentation is carried out through a biological fermentation bin before the dry materials and auxiliary materials are gathered; and (4) after the dry materials and the auxiliary materials are gathered, stirred and dried to form the organic fertilizer, packaging and storing finished products.
10. The process for treating livestock and poultry manure by using the subcritical water technology according to claim 7, wherein wastewater and waste heat obtained by treatment in the absorption tank in the step S6 are recovered and discharged after being subjected to water treatment; and the obtained waste gas is discharged after deodorization treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010076437.9A CN111153715A (en) | 2020-01-23 | 2020-01-23 | Equipment and process for treating livestock and poultry manure by subcritical water technology |
Applications Claiming Priority (1)
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146002A (en) * | 2010-12-09 | 2011-08-10 | 上海环垦生态科技有限公司 | Method and equipment for producing organic fertilizer by utilizing subcritical water to process rural-urban organic solid waste |
| CN108059489A (en) * | 2018-01-16 | 2018-05-22 | 运嘉（江苏）环保科技有限公司 | The method that livestock and poultry feces resource is produced to organic fertilizer using subcritical water technology |
| CN207845458U (en) * | 2018-01-16 | 2018-09-11 | 运嘉（江苏）环保科技有限公司 | Waste resource processing arrangements |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146002A (en) * | 2010-12-09 | 2011-08-10 | 上海环垦生态科技有限公司 | Method and equipment for producing organic fertilizer by utilizing subcritical water to process rural-urban organic solid waste |
| CN108059489A (en) * | 2018-01-16 | 2018-05-22 | 运嘉（江苏）环保科技有限公司 | The method that livestock and poultry feces resource is produced to organic fertilizer using subcritical water technology |
| CN207845458U (en) * | 2018-01-16 | 2018-09-11 | 运嘉（江苏）环保科技有限公司 | Waste resource processing arrangements |
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