CN102613404B - Method for recycling heavy metal additives remaining in pig manure for producing pig feed - Google Patents
Method for recycling heavy metal additives remaining in pig manure for producing pig feed Download PDFInfo
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- CN102613404B CN102613404B CN 201210074718 CN201210074718A CN102613404B CN 102613404 B CN102613404 B CN 102613404B CN 201210074718 CN201210074718 CN 201210074718 CN 201210074718 A CN201210074718 A CN 201210074718A CN 102613404 B CN102613404 B CN 102613404B
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Abstract
The invention discloses a method for recycling heavy metal additives remaining in pig manure for producing pig feed. The method comprises the following steps of: processing the pig manure by vermicomposting, wherein heavy metals, namely copper and zinc in the pig manure can be effectively enriched during the vermicomposting process; and collecting earthworms after the end of composting, preparing earthworm powder, then adding into the feed for feeding pigs. Therefore, the heavy metals are re-utilized, and the adding amount of the copper and the zinc in the feed can be reduced by 25%-40% and 10-20% respectively. An organic fertilizer produced by every 1kg of the dry pig manure can reduce the emission of the copper and the zinc by 0.2-0.6 and 1-3mg respectively, so that the heavy metal pollution in farmland caused by the pig manure organic fertilizer is effectively reduced and the method is further conductive to environmental protection.
Description
Technical field
The present invention relates to a kind of recycling method of heavy metal additive of agricultural environmental protection sciemtifec and technical sphere, specifically is that a kind of heavy metal Additive Cu and zinc that residues in the pig manure circulates for the method for pig feed.
Background technology
Copper and zinc are necessary trace elements in the pig body.In the formation mechanism of hemoglobin, must there be trace copper to participate in; Copper is the composition of a lot of enzymes.Zinc is distributed widely in the various piece of animal body, and is higher with content in the chorioidal epithelium of muscle, hair, male animal reproduction liquid and eye.The biosynthesis of copper and zinc and body endoenzyme, protein and nucleic acid has substantial connection, to metabolism rise, healthy growth and keep reproductive organs and the normal development of property function etc. all plays an important role.So all will add a certain amount of copper and zinc in the general pig feed, to promote growth.
Copper in feed enters the pig body and zinc mainly enter after metabolism in the swine excrement, and swine excrement generally is applied to farmland, flowers or trees as fertilizer, has caused the heavy metal pollution of soil.Heavy metal pollution of soil is more and more serious at present, has become a great environmental problem, and wherein the heavy metal from swine excrement is one of main source of heavy metals in farmland pollution, is badly in need of seeking solution.
Find through the literature search to prior art, the existing technology of utilizing earthworm to handle pig manure, it is 200810045547.8 Chinese patent as application number, patent name is: the processing of pig manure and utilize method, this patent readme is that " the present invention relates to the processing of plant's feces of livestock and poultry and utilize method; be particularly related to a kind of processing of pig manure and utilize method " " the present invention makes after the processing of pig manure process suitability for industrialized production; moisture content drops to below 14%; no stink; be used for breeding earthworm; life buddhist high protein feed, make the edible mushroom base-material, become Fei Weibao, reduce environmental pollution ".Yet this method only relates to earthworm handles pig manure, does not relate to the heavy metal in the pig manure.
Summary of the invention
The objective of the invention is to be difficult to re-use at heavy metal in the present swine excrement and cause the present situation of serious environmental pollution, provide a kind of heavy metal additive circulation that residues in the pig manure to be used for the method for pig feed, it is the method for the re-using of copper and zinc, realize the re-using of heavy metal, reduce the addition of heavy metal in the feed of pig farm, save cost.And effectively reduce the heavy metal amount of discharging in the environment along with swine excrement, and alleviate heavy metals in farmland and pollute, be conducive to environmental protection.
The present invention is achieved by the following technical solutions, the present invention utilizes earthworm compost treatment swine excrement, earthworm is in composting process, effectively heavy metal copper and the zinc in the enrichment pig manure after compost is finished, is collected earthworm, make earthworm powder, make an addition to then in the feed, be used for feeding pigs, realize the re-using of heavy metal.
Method of the present invention specifically may further comprise the steps:
1) dunghill is prepared: the fresh pig dunghill is become dunghill;
2) add the compost auxiliary material; Add and contain organic plant residue to regulate the carbon-nitrogen ratio in the dunghill, be beneficial to compost fermentation, mix with dunghill behind the adding auxiliary material;
3) add earthworm and carry out compost: every day is with the loose uppermost pig manure of creeper, treat that the dunghill surface reaches fifty percent and puts into the earthworm kind when doing, earthworm will be food with ight soil, growth and breeding voluntarily, organic matter in the while digest and decompose ight soil, in this process, the heavy metal copper in the ight soil and zinc are transferred to part in the earthworm body;
4) composting process management: note the variation of compost temperature, turning descended temperature when temperature was too high;
5) earthworm of gathering; After treating that dunghill becomes thoroughly decomposed and finishes composting process, the earthworm of gathering;
6) earthworm powder is made: bright earthworm is cleaned, scalded deadly, air-dry or dry then with hot water, pulverize, and measure copper and zinc content in the earthworm powder;
7) feed with earthworm powder: earthworm powder is added in the pig feed, according to the amount of copper and zinc in the earthworm powder that records, reduce the copper sulphate and the zinc sulfate that in feed, add equivalent;
8) heavy metal is recycling: the ight soil of raising pigs with this feed continues to carry out the earthworm compost with above-mentioned method, is reused for feed with enriching heavy metal, thereby realizes the recycling of heavy metal.
When described dunghill length is oversize, open a gully mouth therebetween.
Described adding earthworm refers to treating that dunghill surface 5-8cm thickness reaches fifty percent and puts into the earthworm kind when doing.
Described adding earthworm, wherein the density of earthworm kind is every m
2Excrement is put into ten thousand of kind of the earthworm 1-1.5 of laying eggs.
The described earthworm of gathering refers at dunghill surface coverage straw, and earthworm will go under the straw of dunghill surface, then with hand or instrument collection.
Described earthworm powder adds in the pig feed with the ratio substituted fish meal of weight content 7-8%.
The present invention is by the heavy metal in the earthworm bioaccumulation minimizing pig manure, and earthworm is rich in range protein again simultaneously, adds in the feed, can reduce the addition of copper, zinc, saves cost; Day by day under the serious situation, use this method to raise pigs in heavy metal pollution at present for a long time, with effectively reducing heavy metal with the release of swine excrement to environment, have important environment protection significance; Content of beary metal in the fertilizer reduces simultaneously, can improve the quality of fertilizer, improves price, increases economic benefit.The present invention can reduce with the 25%-40% of copper addition in the feed and the 10-20% of zinc addition.The fertilizer that the dried pig manure of every 1kg produces can reduce discharging copper 0.2-0.6mg, and zinc 1-3mg has effectively reduced the heavy metals in farmland pollution that the pig manure fertilizer brings, and is conducive to environmental protection.
Description of drawings
Fig. 1 the inventive method flow chart.
The specific embodiment
Below embodiments of the invention are elaborated, present embodiment is prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, the invention process step is as follows:
1) dunghill is prepared: with fresh pig dunghill Cheng Kuanyue 1m, high 30-40cm, about dunghill, length is not limit, and determines that according to the test landform gully mouth can be opened in oversize centre.
2) add the compost auxiliary material; Add and contain organic plant residue such as stalk or wood chip to regulate the carbon-nitrogen ratio in the dunghill, be beneficial to compost fermentation.Mix with dunghill after adding auxiliary material.
3) add earthworm and carry out compost: every day is with the loose uppermost pig manure of creeper, treats that dunghill surface 5-8cm left and right thickness reaches about fifty percent and can put into the earthworm kind when doing.Density is every m
2Excrement is put into about ten thousand of kind of the earthworm 1-1.5 of laying eggs.Earthworm will be food with ight soil, growth and breeding voluntarily, and the organic matter in the digest and decompose ight soil promotes becoming thoroughly decomposed of dunghill simultaneously.In this process, the heavy metal copper in the ight soil and zinc are transferred to part in the earthworm body, if note earthworm density, and earthworm grows up well, will reduce copper in the ight soil and the content of zinc effectively.
4) composting process management: in composting process, will note the variation of compost temperature, because earthworm is responsive to temperature, if temperature is too high, is unfavorable for the earthworm growth and influences the absorption of heavy metal, even may cause earthworm death.But turning descended temperature when temperature was too high.
5) earthworm of gathering: after treating that dunghill becomes thoroughly decomposed and finishes composting process, the earthworm of gathering, the ight soil that becomes thoroughly decomposed transports the place, is to become thoroughly decomposed after temperature descends at dunghill, adopts certain method to gather earthworm.As at dunghill surface coverage straw, earthworm will go under the straw of dunghill surface, then with hand or instrument collection.
6) earthworm powder is made: bright earthworm is cleaned, scalded deadly, air-dry or dry then with hot water, pulverize.And the copper in the mensuration earthworm powder and zinc content.
7) use the earthworm powder formula feed: the ratio substituted fish meal of earthworm powder with 7-8% added in the pig feed, according to the amount of copper and zinc in the earthworm powder that records, reduce the copper sulphate and the zinc sulfate that in feed, add equivalent.
8) heavy metal is recycling: with the feed of the feed that adds earthworm as pig, copper in the earthworm powder and zinc can be utilized by the pig body, the ight soil of raising pigs with this feed continues to carry out the earthworm compost with above-mentioned method, with enriching heavy metal from new utilization, thereby realized the recycling of heavy metal copper and zinc.
Below in conjunction with above-mentioned steps, certain pig farm adopts this method to carry out the recycling of heavy metal in the pig manure:
1) dunghill is made: at first pig manure is piled wide about 1m, high 30-40cm, about dunghill, 20 meters of length.
2) add the compost auxiliary material: adding wood chip adjusting C/N is 25-30, mixing.Every day is with the loose uppermost pig manure of creeper, needs loose the solarization to about the thickness 5-8cm of fifty percent pig manure of doing, and shines approximately when doing to fifty percent and can put into the earthworm kind.
3) add earthworm: can put into about ten thousand of kind of the earthworm 1-1.5 of laying eggs by the every m2 excrement of surface area, carry out the earthworm compost.
4) earthworm is raised and compost fermentation: collected earthworm excrement and earthworm cocoon every 10 days and open a pile in addition and hatch, can make every batch of earthworm size specification consistent as far as possible.Note the variation of compost temperature, turning or water spray descended temperature when temperature was too high, will spray water such as found the earthworm argol during culturing, every spray in 3-5 days once.
5) earthworm results: compost maturity generally needed about 2 months, the earthworm of gathering after becoming thoroughly decomposed.At dunghill surface coverage straw, earthworm will go under the straw of dunghill surface, then with hand or instrument collection.Surplus material uses as fertilizer.
6) earthworm powder is made: bright earthworm is cleaned, scalded deadly, air-dry or dry then with hot water, pulverize.With the content of beary metal in the atomic absorption spectrophotometer earthworm powder, copper is the 40-60mg/kg dry weight in this example, and zinc is the 200-300mg/kg dry weight.
7) use the earthworm powder formula feed: add copper sulphate and zinc sulfate in this feed as Cu source and Zn source, be respectively 10mg/kg and 200mg/kg in the addition of Cu and Zn.Use the earthworm powder substituted fish meal, the content in feed is 7%.According to the content of the Cu in the earthworm and Zn, can reduce with CuSO
4The 25%-40% of addition and ZnSO
4The 10-20% of addition.
8) pig manure that becomes thoroughly decomposed behind the earthworm compost is as fertilizer.The content of Cu is about the 300mg/kg dry weight in the fresh pig dung, the about 800mg/kg dry weight of Zn content.But the about 20-25g of the dried pig manure cultivating earthworm of every 1kg.Behind the compost, the fertilizer that the dried pig manure of every 1kg produces can reduce Cu 0.2-0.6mg, Zn 1-3mg.
Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (4)
1. a heavy metal additive that residues in the pig manure circulates and is used for the method for pig feed, it is characterized in that: utilize earthworm compost treatment swine excrement, earthworm is in composting process, effectively heavy metal copper and the zinc in the enrichment pig manure after compost is finished, is collected earthworm, make earthworm powder, make an addition to then in the feed, be used for feeding pigs, realize the re-using of heavy metal;
Said method comprising the steps of:
1) dunghill is prepared: the fresh pig dunghill is become dunghill;
2) add the compost auxiliary material; Add and contain organic plant residue to regulate the carbon-nitrogen ratio in the dunghill, be beneficial to compost fermentation, mix with dunghill behind the adding auxiliary material;
3) add earthworm and carry out compost: every day is with the loose uppermost pig manure of creeper, treat that the dunghill surface reaches fifty percent and puts into the earthworm kind when doing, earthworm will be food with ight soil, growth and breeding voluntarily, organic matter in the while digest and decompose ight soil, in this process, the heavy metal copper in the ight soil and zinc are transferred to part in the earthworm body;
4) composting process management: note compost temperature, turning or water spray descended temperature when temperature was too high;
5) earthworm of gathering; After treating that dunghill becomes thoroughly decomposed and finishes composting process, the earthworm of gathering;
6) earthworm powder is made: bright earthworm is cleaned, scalded deadly, air-dry or dry then with hot water, pulverize, and measure copper and zinc content in the earthworm powder;
7) feed with earthworm powder: earthworm powder is added in the pig feed, according to the amount of copper and zinc in the earthworm powder that records, reduce the copper sulphate and the zinc sulfate that in feed, add equivalent;
8) heavy metal is recycling: the ight soil of raising pigs with this feed continues to carry out the earthworm compost with above-mentioned method, is reused for feed with enriching heavy metal, thereby realizes the recycling of heavy metal;
The described earthworm of gathering refers at dunghill surface coverage straw, and earthworm will go under the straw of dunghill surface, then with hand or instrument collection.
2. the heavy metal additive circulation that residues in the pig manure according to claim 1 is used for the method for pig feed, it is characterized in that: described addings earthworm refers to treating that dunghill surface 5-8cm thickness reaches fifty percent and puts into the earthworm kind when dried.
3. the heavy metal additive circulation that residues in the pig manure according to claim 1 and 2 is used for the method for pig feed, and it is characterized in that: described adding earthworm, wherein the density of earthworm kind is every m
2Excrement is put into ten thousand of kind of the earthworm 1-1.5 of laying eggs.
4. the heavy metal additive circulation that residues in the pig manure according to claim 1 is used for the method for pig feed, and it is characterized in that: described earthworm powder adds in the pig feed, to replace whole fish meal with the ratio of weight content 7-8%.
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| CN 201210074718 CN102613404B (en) | 2012-03-20 | 2012-03-20 | Method for recycling heavy metal additives remaining in pig manure for producing pig feed |
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| CN 201210074718 CN102613404B (en) | 2012-03-20 | 2012-03-20 | Method for recycling heavy metal additives remaining in pig manure for producing pig feed |
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| CN107788257A (en) * | 2017-11-24 | 2018-03-13 | 马鞍山市五谷禽业专业合作社 | A kind of production method of the good poultry feed of palatability |
| CN108576500A (en) * | 2018-07-04 | 2018-09-28 | 松桃梵净桃源农牧发展有限公司 | It is a kind of to utilize pool cowfish feed and preparation method thereof made of black pig pig manure |
| US20220251001A1 (en) * | 2021-01-29 | 2022-08-11 | Excelsior Inc. | Method for producing vermicompost |
Citations (3)
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|---|---|---|---|---|
| US3961603A (en) * | 1975-07-31 | 1976-06-08 | Gaddie Sr Ronald E | Habitat for earthworm cultivation |
| CN101696075A (en) * | 2009-09-25 | 2010-04-21 | 扬州大学 | Method for biologically digesting and recycling pig large intestine excrement and hair and intestine wastes |
| CN102334467A (en) * | 2010-07-17 | 2012-02-01 | 曹洪 | Method for cultivating earthworm greenhouse |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3945577B2 (en) * | 2002-10-17 | 2007-07-18 | 株式会社ヴィクトリー | Garbage disposal system using earthworms |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3961603A (en) * | 1975-07-31 | 1976-06-08 | Gaddie Sr Ronald E | Habitat for earthworm cultivation |
| CN101696075A (en) * | 2009-09-25 | 2010-04-21 | 扬州大学 | Method for biologically digesting and recycling pig large intestine excrement and hair and intestine wastes |
| CN102334467A (en) * | 2010-07-17 | 2012-02-01 | 曹洪 | Method for cultivating earthworm greenhouse |
Non-Patent Citations (4)
| Title |
|---|
| JP特开2004-136200A 2004.05.13 |
| 李灵香玉.铜、锌在猪粪—蚯蚓***中迁移积累和调控研究.《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑 （月刊 ）》.2010,(第 08 期),论文第8页第2段，第20页第1段. * |
| 蚯蚓高效养殖技术及其效益分析;龚丽贞;《现代农业科技》;20101231(第19期);第304页第1.3节，第305页第1.4节 * |
| 龚丽贞.蚯蚓高效养殖技术及其效益分析.《现代农业科技》.2010,(第19期),第304页第1.3节，第305页第1.4节. |
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