CN113526986A - Method for preparing biochar from livestock and poultry manure - Google Patents
Method for preparing biochar from livestock and poultry manure Download PDFInfo
- Publication number
- CN113526986A CN113526986A CN202110908832.3A CN202110908832A CN113526986A CN 113526986 A CN113526986 A CN 113526986A CN 202110908832 A CN202110908832 A CN 202110908832A CN 113526986 A CN113526986 A CN 113526986A
- Authority
- CN
- China
- Prior art keywords
- biochar
- livestock
- poultry manure
- preparing
- carbonization
- 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
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
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/05—Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2101/00—Agricultural use
Abstract
The invention discloses a method for preparing biochar from livestock and poultry manure, which comprises the following steps of firstly, adding a drying material according to the water content of the livestock and poultry manure, and stirring to form a mixture until the water content of the mixture is less than or equal to 45%; and step two, directly feeding the uniformly mixed mixture into an anaerobic pyrolysis internal heating type carbonization furnace for carbonization to generate biochar, wherein the carbonization temperature is 450-700 ℃. The preparation method for preparing the biochar from the livestock and poultry manure has the advantages of low investment for preparing the biochar, high yield benefit, safe and healthy return to the field by performing harmless treatment on the livestock and poultry manure and generating the biochar, high carbon yield and good quality of the biochar.
Description
The technical field is as follows:
the invention relates to the field of resource harmless treatment, in particular to a method for preparing biochar from livestock and poultry manure.
Background art:
the fermentation and composting of livestock and poultry manure into organic fertilizer is a traditional organic fertilizer accumulation method, and the method is used for a long time historically, because livestock and poultry are raised at home in the past, the livestock and poultry manure is small in scale, artificial feed is not used, pesticides, hormones, antibiotics and the like are not used generally, and although the defects of wasting time and labor and the like are overcome, the method is feasible to be used as the traditional organic fertilizer. The existing livestock and poultry manure (pig manure, chicken manure and the like) generally contains inorganic pollutants such as heavy metals and the like, organic pollutants such as pesticides and the like, and biological pollutants such as hormones, antibiotics and the like. The current common disposal method is to mix and pile solid wastes (feces) and straws and the like through solid-liquid separation, turn and throw the mixture for 20 to 30 days, ferment the mixture, and return the mixture to farmland as organic fertilizer compost after the mixture is mature.
There are three major disadvantages or problems with reusing this conventional method:
1. at present, livestock and poultry are cultivated in a large scale by adopting artificial feed and using pesticides for disease prevention, hormone for growth promotion and a large amount of antibiotics for disease prevention, so that excrement contains inorganic pollutants such as heavy metals, organic pollutants such as pesticides and biological pollutants such as hormone and antibiotics, the fermentation temperature is generally not more than 75-80 ℃, the inorganic, organic and biological pollutants cannot be removed, and the organic fertilizer is a secondary pollution source for polluted soil. At present, the over-standard heavy metals in soil and the harm of excessive pesticides, hormones and antibiotics are the direct reasons for the well-known insecurity of food and the unhealthy soil.
2. The concentrated mosquitoes and flies in the livestock and poultry manure fermentation composting place are also a great environmental problem with the smell rushing to the sky, and are strongly opposed by people around the production place.
3. The fermentation time is long, generally needs 20-30 days, and can be longer in winter, namely 30-50 days, so that the efficiency is low, the labor intensity is high, and few farmers are willing to dry the fertilizer.
The invention content is as follows:
the invention aims to solve the technical problem of providing a method for preparing biochar from livestock and poultry manure for innocent treatment of the livestock and poultry manure, which can passivate heavy metals and completely eliminate pesticides, hormones and antibiotics, so that the prepared biochar can be safely and healthily returned to the field, can be returned to the field as a soil conditioner or an organic fertilizer as a raw material for returning to the field for recycling, and can effectively improve the carbon yield and the quality of the biochar.
The technical proposal of the invention is to provide a method for preparing biochar from livestock and poultry manure, which comprises the following steps,
step one, adding a dry material according to the water content of the livestock and poultry manure, and stirring to form a mixture until the water content of the mixture is less than or equal to 45%;
step two, directly feeding the uniformly mixed mixture into an anaerobic pyrolysis internal heating type carbonization furnace for carbonization to generate biochar, wherein the carbonization temperature is 450-700 ℃;
and step three, cooling the biochar, and metering and packaging after cooling.
Preferably, the dried material is one or more of pulverized straw, rice chaff, bamboo bits or sawdust.
Preferably, the mass percentage of the dry chemical material is controlled to be 30-60% of the total mass.
Preferably, step one is carried out in a blender.
Preferably, in the second step, the carbonization temperature is 550-600 ℃.
According to a further technical scheme, the cooling of the biochar in the step three is carried out in a cooling roller.
The invention has the beneficial effects that: the water content of the livestock and poultry manure is directly less than or equal to 45 percent through the biological drying mixed material, the uniform mixed material is directly sent into an anaerobic pyrolysis internal heating type carbonization furnace for carbonization, and a biochar product is obtained and can be used as a soil conditioner or a raw material of an organic fertilizer to be returned to the field for recycling, wherein the biological drying reduces the water content of the livestock and poultry manure, and the cost of drying by using heat energy is saved; meanwhile, the charcoal yield is improved by 20 percent compared with the charcoal yield under the condition of no drying, and the quality of the biochar is improved; secondly, the carbonization process is carried out at the middle and high temperature of 450 ℃ and 700 ℃ in anaerobic pyrolysis, so that the purposes of heavy metal passivation and complete elimination of pesticides, hormones and antibiotics can be achieved, and the biochar can be safely and healthily returned to the field; meanwhile, the biological drying and carbonization processes are suitable for industrial production, continuous production can be realized according to equipment designed by different-scale farms, the investment cost is low, and the benefit is high.
The specific implementation mode is as follows:
the invention will be further illustrated with reference to specific embodiments:
example 1
A method for preparing biochar from livestock and poultry manure comprises the following steps,
step one, adding a dry material according to the water content of the livestock and poultry manure, and stirring to form a mixture until the water content of the mixture is less than or equal to 45%; in the embodiment, the livestock and poultry manure is chicken manure which contains heavy metals such as lead, cadmium and the like, growth hormone and antibiotics, wherein the water content of the chicken manure is about 55% by feeding artificial feed, 35% of wood chips or rice chaff can be added to reduce the water content of the mixture to 38%, and the mixture is fully stirred by a stirrer;
directly feeding the uniformly mixed mixture into an anaerobic pyrolysis internal heating type carbonization furnace through a conveying belt for carbonization to generate biochar, wherein the carbonization temperature is 535 ℃, external air is isolated during carbonization, and medium and high temperature is adopted, so that the treatment process is harmless, heavy metal can be passivated, and pesticides, hormones and antibiotics are completely eliminated;
and step three, cooling the biochar, metering and packaging after cooling, wherein in the step, cooling is carried out in a cooling roller, and circulating cooling water is adopted for cooling.
For better operation environment, the conveyer belt can adopt a closed structure, namely, a cover shell is covered above the conveyer belt connecting the discharge port of the stirrer to the feed port of the anaerobic pyrolysis internal heating type carbonization furnace so as to reduce the emission of excrement smell.
Example 2
Different from the embodiment 1, the livestock manure is the pig manure, the water content of the pig manure is high, 50% of wood chips and bamboo chips by mass are adopted, the ratio of the wood chips to the bamboo chips can be adjusted at will, the water content of the mixture is reduced by 40%, and the pig manure contains more antibiotics, so that the set anaerobic pyrolysis internal heating type carbonization furnace can be properly adjusted to be higher, namely 585 ℃ in the embodiment. Thereby completely eliminating the antibiotics during the carbonization process. So that the biochar can be safely returned to the field.
The water content of the livestock and poultry manure is directly less than or equal to 45 percent through the biological drying mixed material, the uniform mixed material is directly sent into an anaerobic pyrolysis internal heating type carbonization furnace for carbonization, and a biochar product is obtained and can be used as a soil conditioner or a raw material of an organic fertilizer to be returned to the field for recycling, wherein the biological drying reduces the water content of the livestock and poultry manure, and the cost of drying by using heat energy is saved; meanwhile, the charcoal yield is improved by 20 percent compared with the charcoal yield under the condition of no drying, and the quality of the biochar is improved; secondly, the carbonization process is carried out at the middle and high temperature of 450 ℃ and 700 ℃ in anaerobic pyrolysis, so that the purposes of heavy metal passivation and complete elimination of pesticides, hormones and antibiotics can be achieved, and the biochar can be safely and healthily returned to the field; meanwhile, the biological drying and carbonization processes are suitable for industrial production, continuous production can be realized according to equipment designed by different-scale farms, the investment cost is low, and the benefit is high.
Claims (6)
1. A method for preparing biochar from livestock and poultry manure is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
step one, adding a dry material according to the water content of the livestock and poultry manure, and stirring to form a mixture until the water content of the mixture is less than or equal to 45%;
step two, directly feeding the uniformly mixed mixture into an anaerobic pyrolysis internal heating type carbonization furnace for carbonization to generate biochar, wherein the carbonization temperature is 450-700 ℃;
and step three, cooling the biochar, and metering and packaging after cooling.
2. The method for preparing biochar from livestock and poultry manure according to claim 1, which is characterized in that: the dried material is one or more of pulverized straw, rice chaff, bamboo bits or sawdust.
3. The method for preparing biochar from livestock and poultry manure according to claim 1, which is characterized in that: the mass percentage of the dry chemical material is controlled to be 30-60% of the total mass.
4. The method for preparing biochar from livestock and poultry manure according to claim 1, which is characterized in that: step one is carried out in a stirrer.
5. The method for preparing biochar from livestock and poultry manure according to claim 1, which is characterized in that: in the second step, the carbonization temperature is 550-.
6. The method for preparing biochar from livestock and poultry manure according to claim 1, which is characterized in that: and step three, cooling the biochar in a cooling roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110908832.3A CN113526986A (en) | 2021-08-09 | 2021-08-09 | Method for preparing biochar from livestock and poultry manure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110908832.3A CN113526986A (en) | 2021-08-09 | 2021-08-09 | Method for preparing biochar from livestock and poultry manure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113526986A true CN113526986A (en) | 2021-10-22 |
Family
ID=78122243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110908832.3A Pending CN113526986A (en) | 2021-08-09 | 2021-08-09 | Method for preparing biochar from livestock and poultry manure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113526986A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114350369A (en) * | 2022-01-21 | 2022-04-15 | 四川农业大学 | Method for removing antibiotic resistance gene in soil improved by excrement |
| CN115259962A (en) * | 2021-12-22 | 2022-11-01 | 淮阴师范学院 | Preparation method of livestock and poultry manure biochar-based slow-release phosphorus-potassium fertilizer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8317891B1 (en) * | 2011-06-06 | 2012-11-27 | Cool Planet Biofuels, Inc. | Method for enhancing soil growth using bio-char |
| CN105801301A (en) * | 2016-03-24 | 2016-07-27 | 江西农业大学 | Method for lowering bio-availability of Cu and Zn in pig manure based on biomass pyrolysis technology |
| CN106986323A (en) * | 2017-05-05 | 2017-07-28 | 四川大宇中和农业科技发展有限公司 | A kind of method of residual antibiotic in processing feces of livestock and poultry |
| CN108148606A (en) * | 2018-01-12 | 2018-06-12 | 中国科学院城市环境研究所 | A kind of control method of breeding waste antibiotic resistance genes |
-
2021
- 2021-08-09 CN CN202110908832.3A patent/CN113526986A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8317891B1 (en) * | 2011-06-06 | 2012-11-27 | Cool Planet Biofuels, Inc. | Method for enhancing soil growth using bio-char |
| CN105801301A (en) * | 2016-03-24 | 2016-07-27 | 江西农业大学 | Method for lowering bio-availability of Cu and Zn in pig manure based on biomass pyrolysis technology |
| CN106986323A (en) * | 2017-05-05 | 2017-07-28 | 四川大宇中和农业科技发展有限公司 | A kind of method of residual antibiotic in processing feces of livestock and poultry |
| CN108148606A (en) * | 2018-01-12 | 2018-06-12 | 中国科学院城市环境研究所 | A kind of control method of breeding waste antibiotic resistance genes |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115259962A (en) * | 2021-12-22 | 2022-11-01 | 淮阴师范学院 | Preparation method of livestock and poultry manure biochar-based slow-release phosphorus-potassium fertilizer |
| CN114350369A (en) * | 2022-01-21 | 2022-04-15 | 四川农业大学 | Method for removing antibiotic resistance gene in soil improved by excrement |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108002954B (en) | Anaerobic-aerobic balanced fermentation method for agricultural wastes | |
| CN103664287B (en) | A kind of biological organic fertilizer utilizing waterplant to prepare | |
| CN108456068A (en) | A kind of auxiliary material addition quickly removes the compost method of tetracycline antibiotics in biogas residue | |
| CN210237481U (en) | Livestock and poultry manure fermenting device | |
| CN106431561A (en) | Method for preparing organic manure by exploiting agriculture waste | |
| CN113526986A (en) | Method for preparing biochar from livestock and poultry manure | |
| CN109704879A (en) | A kind of preparation method of charcoal organic fertilizer | |
| CN103694015B (en) | A kind of bio-organic fertilizer and preparation method thereof | |
| JP2010235360A (en) | Method of manufacturing fertilizer and fertilizer | |
| CN106966832A (en) | A kind of ecological organic fertilier and preparation method thereof | |
| CN113461463A (en) | High-efficiency livestock and poultry manure composting method | |
| CN113636877A (en) | Biological treatment system based on excrement and urine resource utilization | |
| CN109053330A (en) | A kind of medium of soil improvement | |
| CN111348948A (en) | Production method and device of efficient circulating bio-organic fertilizer | |
| CN102344232A (en) | Method for producing biogas and organic fertilizer by dry fermentation of livestock and poultry feces | |
| CN105777388A (en) | Preparation method of organic fertilizer by means of fermentation of chicken manure | |
| CN107337480A (en) | A kind of poultry manure handling process | |
| CN114014718B (en) | Method for producing carbon-based bacterial fertilizer by feeding hermetia illucens with livestock and poultry manure added with charcoal | |
| CN211546356U (en) | Production facility of fertilizer | |
| CN114539005A (en) | Method for preparing organic fertilizer by using crop straws | |
| CN108503399A (en) | A kind of efficient processing method for removing antibiotic in feces of livestock and poultry | |
| CN108395294A (en) | A kind of agricultural waste fermentation at organic fertilizer application technology as the second resource | |
| CN109485464A (en) | A kind of method that feces of livestock and poultry produces biogas and fertilizer | |
| CN106699242A (en) | Method for producing biogas and organic fertilizer by animal excrements | |
| CN112358350A (en) | Harmless treatment method for breeding waste |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211022 |