CN110104915A - The method for being passivated heavy metal in feces of livestock and poultry charcoal - Google Patents

The method for being passivated heavy metal in feces of livestock and poultry charcoal Download PDF

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Publication number
CN110104915A
CN110104915A CN201910390292.7A CN201910390292A CN110104915A CN 110104915 A CN110104915 A CN 110104915A CN 201910390292 A CN201910390292 A CN 201910390292A CN 110104915 A CN110104915 A CN 110104915A
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CN
China
Prior art keywords
livestock
feces
poultry
heavy metal
charcoal
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Pending
Application number
CN201910390292.7A
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Chinese (zh)
Inventor
李飞跃
吴旋
吴文革
赵建荣
王翔
焦保杨
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Anhui University of Science and Technology
Rice Research Institute of Anhui Academy of Agricultural Sciences
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Anhui University of Science and Technology
Rice Research Institute of Anhui Academy of Agricultural Sciences
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Application filed by Anhui University of Science and Technology, Rice Research Institute of Anhui Academy of Agricultural Sciences filed Critical Anhui University of Science and Technology
Priority to CN201910390292.7A priority Critical patent/CN110104915A/en
Publication of CN110104915A publication Critical patent/CN110104915A/en
Pending legal-status Critical Current

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    • 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
    • C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
    • 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
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Fertilizers (AREA)

Abstract

The present invention gives a kind of methods of heavy metal in passivation feces of livestock and poultry charcoal, comprising the following steps: air-dries feces of livestock and poultry to constant weight；Calcium dihydrogen phosphate, feces of livestock and poultry and distilled water are uniformly mixed so as to obtain mixture；Mixture drying is ground；To mixture carry out biomass pyrolytic, 200~700 DEG C of pyrolysis temperature；Thermal decomposition product is collected, heavy metal in passivation feces of livestock and poultry charcoal is completed.The present invention is passivated heavy metal in feces of livestock and poultry using calcium dihydrogen phosphate property, can be used for the charcoal of environmental protection with pyrolytic technique preparation, has reached the recycling and innoxious use to feces of livestock and poultry.

Description

The method for being passivated heavy metal in feces of livestock and poultry charcoal
Technical field
The present invention relates to a kind of methods of heavy metal in passivation feces of livestock and poultry charcoal.
Background technique
Feces of livestock and poultry contains the nutrients such as a large amount of N, P and K, is a kind of important organic fertilizer, with feed industry and The development of intensive aquaculture industry, in order to promote growth of animals or poultry, preventing livestock and poultry and improve food utilization efficiency etc., it is some containing The feed addictive of the heavy metals such as Cu and Zn is widely used.The bioavailable efficiency of the heavy metals such as Cu and Zn is lower, with livestock and poultry Excrement and urine excrete, therefore feces of livestock and poultry, often containing the heavy metal of higher concentration, there are serious for such animal dung Environmental problem.The exceeded feces of livestock and poultry of chronic administration content of beary metal, the content of beary metal that will cause in soil is exceeded, Jin Erhui Reduce soil quality and influence crop quality, heavy metal in soil by the approach migration such as rainwash and leaching, to soil and Water environment causes serious negative effect.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of methods of heavy metal in passivation feces of livestock and poultry charcoal, should It is exceeded that method can solve content of beary metal in feces of livestock and poultry charcoal, has harmfulness to environment, can not direct plunge into environment The problem of protection field uses.
In order to solve the above technical problems, the present invention provides a kind of method of heavy metal in passivation feces of livestock and poultry charcoal, The following steps are included:
A) feces of livestock and poultry is air-dried to constant weight；
B) calcium dihydrogen phosphate, feces of livestock and poultry and distilled water are uniformly mixed so as to obtain mixture, calcium dihydrogen phosphate, feces of livestock and poultry and steaming The mass ratio of distilled water is 1:5~15:25~30, stands 12~20 hours；
C) the mixture drying that step b) is obtained is ground, obtains biomass material；
D) to biomass material obtained in step c) carry out biomass pyrolytic, 200~700 DEG C of pyrolysis temperature；
E) thermal decomposition product is collected, heavy metal in passivation feces of livestock and poultry charcoal is completed.
As a preference of the present invention, the mixture drying in step c) grinds and sieves with 100 mesh sieve.
As a preference of the present invention, the biomass pyrolytic technique used in step d) includes:
Biomass material is put into the tube furnace filled with nitrogen protection, 200~700 DEG C of pyrolysis temperature, is pyrolyzed 2 hours, Obtain thermal decomposition product.
After such method, pyrolytic technique can be by livestock and poultry dung recovery, but there are heavy metals to surpass for its thermal decomposition product Mark problem, cannot be used directly in environmental protection, therefore pre-process before feces of livestock and poultry pyrolysis to it, and biphosphate is such as added Calcium can be effectively reduced the heavy metal validity in its thermal decomposition product charcoal, be conducive to the recycling, innoxious of feces of livestock and poultry Processing, and thermal decomposition product charcoal can be directly used for field of environment protection such as soil improvement, have good effect.
The present invention is passivated heavy metal in feces of livestock and poultry using the property of calcium dihydrogen phosphate, can with pyrolytic technique preparation For the charcoal of environmental protection, the recycling and innoxious use to feces of livestock and poultry are reached.
Specific embodiment
Embodiment one
The method of heavy metal in this passivation feces of livestock and poultry charcoal, comprising the following steps:
A) pig manure excrement is air-dried to constant weight, obtains pig manure slag；
B) the air-dried pig manure slag addition 2g calcium dihydrogen phosphate of 20g is weighed, mixing, static placement is sufficiently stirred in 60ml distilled water 12 hours；
C) mixture that step b) is obtained is dried under the conditions of 85 DEG C, is ground and sieved with 100 mesh sieve with mortar, obtains biomass Raw material；
D) biomass material is put into the tube furnace of nitrogen protection by mixture obtained in step c), carries out biology Matter pyrolysis, is pyrolyzed 2 hours under the conditions of 400 DEG C, obtains thermal decomposition product；
E) thermal decomposition product is collected, heavy metal in passivation feces of livestock and poultry charcoal is completed in solid product weighing.
It takes solid product 0.5g that the TCLP extracting solution of 25ml is added in the centrifuge tube of 50ml, is shaken under the conditions of 150rmp 20 hours, centrifugal filtration, which is transferred in reagent bottle, measured the concentration of heavy metal ion in extracting solution with inductive coupling, more original Pig manure excrement be pyrolyzed the charcoal to be formed, it is as follows to measure result:
The above results show that the TCLP validity that 3 heavy metal species after calcium dihydrogen phosphate in pig manure charcoal are added significantly drops Low 56.14%-60.7%.
Embodiment two
The method of heavy metal in this passivation feces of livestock and poultry charcoal, comprising the following steps:
A) birds droppings excrement is air-dried to constant weight, obtains birds droppings slag；
B) the air-dried birds droppings slag addition 2g calcium dihydrogen phosphate of 10g is weighed, mixing, static placement is sufficiently stirred in 60ml distilled water 12 hours；
C) mixture that step b) is obtained is dried under the conditions of 85 DEG C, is ground and sieved with 100 mesh sieve with mortar, obtains biomass Raw material；
D) biomass material is put into the tube furnace of nitrogen protection by mixture obtained in step c), carries out biology Matter pyrolysis, is pyrolyzed 2 hours under the conditions of 400 DEG C, obtains thermal decomposition product；
E) thermal decomposition product is collected, heavy metal in passivation feces of livestock and poultry charcoal is completed in solid product weighing.
It takes solid product 0.5g that the TCLP extracting solution of 25ml is added in the centrifuge tube of 50ml, is shaken under the conditions of 150rmp 20 hours, centrifugal filtration, which is transferred in reagent bottle, measured the concentration of heavy metal ion in extracting solution with inductive coupling, more original Birds droppings excrement be pyrolyzed the charcoal to be formed, it is as follows to measure result:
The above results show that the TCLP validity that 3 heavy metal species after calcium dihydrogen phosphate in birds droppings charcoal are added significantly drops Low 52.23%-100%.
Embodiment three
The method of heavy metal in this passivation feces of livestock and poultry charcoal, comprising the following steps:
A) pig manure excrement is air-dried to constant weight, obtains pig manure slag；
B) the air-dried pig manure slag addition 2g calcium dihydrogen phosphate of 30g is weighed, mixing, static placement is sufficiently stirred in 60ml distilled water 18 hours；
C) mixture that step b) is obtained is dried under the conditions of 85 DEG C, is ground and sieved with 100 mesh sieve with mortar, obtains biomass Raw material；
D) biomass material is put into the tube furnace of nitrogen protection by mixture obtained in step c), carries out biology Matter pyrolysis, is pyrolyzed 2 hours under the conditions of 600 DEG C, obtains thermal decomposition product；
E) thermal decomposition product is collected, heavy metal in passivation feces of livestock and poultry charcoal is completed in solid product weighing.
It takes solid product 0.5g that the TCLP extracting solution of 25ml is added in the centrifuge tube of 50ml, is shaken under the conditions of 150rmp 20 hours, centrifugal filtration, which is transferred in reagent bottle, measured the concentration of heavy metal ion in extracting solution with inductive coupling, more original Pig manure excrement be pyrolyzed the charcoal to be formed, it is as follows to measure result:
The above results show that the TCLP validity that 3 heavy metal species after calcium dihydrogen phosphate in pig manure charcoal are added significantly drops Low 49.35%-78.85%.
Example IV
The method of heavy metal in this passivation feces of livestock and poultry charcoal, comprising the following steps:
A) pig manure excrement is air-dried to constant weight, obtains pig manure slag；
B) the air-dried pig manure slag addition 2g calcium dihydrogen phosphate of 10g is weighed, mixing, static placement is sufficiently stirred in 50ml distilled water 20 hours；
C) mixture that step b) is obtained is dried under the conditions of 85 DEG C, is ground and sieved with 100 mesh sieve with mortar, obtains biomass Raw material；
D) biomass material is put into the tube furnace of nitrogen protection by mixture obtained in step c), carries out biology Matter pyrolysis, is pyrolyzed 2 hours under the conditions of 700 DEG C, obtains thermal decomposition product；
E) thermal decomposition product is collected, heavy metal in passivation feces of livestock and poultry charcoal is completed in solid product weighing.
It takes solid product 0.5g that the TCLP extracting solution of 25ml is added in the centrifuge tube of 50ml, is shaken under the conditions of 150rmp 20 hours, centrifugal filtration, which is transferred in reagent bottle, measured the concentration of heavy metal ion in extracting solution with inductive coupling, more original Pig manure excrement be pyrolyzed the charcoal to be formed, it is as follows to measure result:
The above results show that the TCLP validity that 3 heavy metal species after calcium dihydrogen phosphate in pig manure charcoal are added significantly drops Low 50.48%-60.65%.
Above-described is only four kinds of embodiments of the invention, it is noted that for those of ordinary skill in the art For, without departing from the principle of the present invention, several variations and modifications can also be made, these also should be regarded as belonging to this hair Bright protection scope.

Claims (3)

1. a kind of method of heavy metal in passivation feces of livestock and poultry charcoal, comprising the following steps:
A) feces of livestock and poultry is air-dried to constant weight；
B) calcium dihydrogen phosphate, feces of livestock and poultry and distilled water are uniformly mixed so as to obtain mixture, calcium dihydrogen phosphate, feces of livestock and poultry and distilled water Mass ratio be 1:5~15:25~30, stand 12~20 hours；
C) the mixture drying that step b) is obtained is ground, obtains biomass material；
D) to biomass material obtained in step c) carry out biomass pyrolytic, 200~700 DEG C of pyrolysis temperature；
E) thermal decomposition product is collected, heavy metal in passivation feces of livestock and poultry charcoal is completed.
2. the method for heavy metal in passivation feces of livestock and poultry charcoal according to claim 1, it is characterised in that:
Mixture drying in step c) sieves with 100 mesh sieve after grinding.
3. the method for heavy metal in passivation feces of livestock and poultry charcoal according to claim 1, it is characterised in that:
The biomass pyrolytic technique of use includes: in step d)
Biomass material is put into the tube furnace filled with nitrogen protection, 200~700 DEG C of pyrolysis temperature, is pyrolyzed 2 hours, obtains Thermal decomposition product.
CN201910390292.7A 2019-05-10 2019-05-10 The method for being passivated heavy metal in feces of livestock and poultry charcoal Pending CN110104915A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
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

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060024282A1 (en) * 2001-03-01 2006-02-02 Ultra Biotech Limited Biological fertilizer compositions comprising swine manure
CN103524247A (en) * 2013-10-25 2014-01-22 安徽环绿生态农业投资发展有限公司 Method for producing organic fertilizer by utilizing poultry and livestock excrement
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
CN106083258A (en) * 2016-06-16 2016-11-09 山东省农业科学院农业资源与环境研究所 A kind of method that functional pig manure modifying agent and the modified pig manure of utilization prepare mushroom-cultivating material
CN106986720A (en) * 2017-03-22 2017-07-28 湖南永清水务有限公司 The method for producing soil conditioner using the waste residue for handling livestock breeding wastewater generation
CN109593529A (en) * 2018-12-10 2019-04-09 中冶华天工程技术有限公司 The preparation method and applications method of phosphorus base modification biological charcoal

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060024282A1 (en) * 2001-03-01 2006-02-02 Ultra Biotech Limited Biological fertilizer compositions comprising swine manure
CN103524247A (en) * 2013-10-25 2014-01-22 安徽环绿生态农业投资发展有限公司 Method for producing organic fertilizer by utilizing poultry and livestock excrement
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
CN106083258A (en) * 2016-06-16 2016-11-09 山东省农业科学院农业资源与环境研究所 A kind of method that functional pig manure modifying agent and the modified pig manure of utilization prepare mushroom-cultivating material
CN106986720A (en) * 2017-03-22 2017-07-28 湖南永清水务有限公司 The method for producing soil conditioner using the waste residue for handling livestock breeding wastewater generation
CN109593529A (en) * 2018-12-10 2019-04-09 中冶华天工程技术有限公司 The preparation method and applications method of phosphorus base modification biological charcoal

Cited By (1)

* Cited by examiner, † Cited by third party
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

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Application publication date: 20190809