CN103980041A - Eluting agent for removing heavy metals in agricultural solid organic compost and removal method using the same - Google Patents
Eluting agent for removing heavy metals in agricultural solid organic compost and removal method using the same Download PDFInfo
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- CN103980041A CN103980041A CN201410159858.2A CN201410159858A CN103980041A CN 103980041 A CN103980041 A CN 103980041A CN 201410159858 A CN201410159858 A CN 201410159858A CN 103980041 A CN103980041 A CN 103980041A
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- organic compost
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- drip washing
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Abstract
The invention discloses an eluting agent for removing heavy metals in agricultural solid organic compost and a removal method using the same. The eluting agent is prepared from 2-4wt% of alkyl polyglycoside, 1-2wt% of phosphatidylethanolamine (phosphatidylcholine or phosphatidic acid), 1wt% of mannoprotein and the balance water. The removal method comprises the following steps of putting decomposed organic compost into a cement pool, eluting the decomposed organic compost by an eluant of which the volume is 4-6 times that of the organic compost from a position above the organic compost, carrying out re-eluting by the eluant once after 12-24h after the eluting, carrying out eluting again by water, collecting the eluting solution, and adding excess sodium hydroxide into the eluting solution so that heavy metals in the filtrate are precipitated. The biochemical eluting agent has a simple formula, substantial effects, good removal effects on copper, zinc, arsenic and selenium in the compost and characteristics of low cost and high restoration efficiency.
Description
Technical field
The invention belongs to organic fertilizer processing technology field, be specifically related to a kind of eluent and removal method of removing heavy metal in cultural solid organic compost.
Background technology
Rapidly, the quantity discharged of China's feces of livestock and poultry has reached 4,500,000,000 tons to China's livestock and poultry breeding industry development.But feces of livestock and poultry harmless treatment lags behind, and has now caused serious environmental pollution, and has directly affected growth of animals or poultry and HUMAN HEALTH.On the other hand, feces of livestock and poultry is again the precious resources in agriculture production, and the nitrogen that the feces of livestock and poultry of 4,500,000,000 tons can produce, phosphorus reach respectively 1,597 ten thousand tons and 3,630,000 tons, be equivalent to 78.9% and 57.4% of China's fertilizer amount same period, so reinforcement is the important channel of feces of livestock and poultry processing to feces of livestock and poultry harmless treatment and Fertilizer Transformed utilization.But because the copper, zinc, arsenic, selenium etc. that generally add high dosage in fowl poultry kind feed promote the required micronutrient element of animal growth and development, these animal and fowl fodders that are subject to heavy metal contamination are two after livestock and poultry are edible to be excreted wherein a large amount of heavy metals by ight soil, if directly these feces of livestock and poultry are used as agricultural fertilizer, can make heavy metal wherein in soil, accumulate and have the risk that exceedes volume weight of soils, and soil is caused to severe contamination.To how reducing the biological effectiveness of heavy metal in feces of livestock and poultry, be applied to after soil, reduce the absorbed dose of plant, be the key of feces of livestock and poultry Fertilizer Transformed.Wherein drip-rinsing process is the most direct effective means that removal heavy metal pollutes, and the removal effect of drip-rinsing process and the composition of its eluent have close contacting, reason is that the basis of drip-rinsing process is to utilize the effective constituent counterweight metal function of its eluent to make the result of its separation.Although in recent years, some investigators use chemicals, specific ion exchanger, mineral acid and organic acid and electrochemical method drip washing to shift the heavy metal in composting material.But these methods have not thorough, the consuming time length of processing, easily produce high malicious mesostate and the feature such as be of limited application.
Summary of the invention
The object of the invention is to overcome the deficiency that prior art exists, a kind of eluent and removal method of removing heavy metal in cultural solid organic compost is provided.
The present invention is achieved through the following technical solutions:
Remove an eluent for heavy metal in cultural solid organic compost, be prepared from by weight percentage by following component:
Alkyl polyglycoside 2%-4%
Phosphatidylethanolamine (phosphatidylcholine or phosphatidic acid) 1%-2%
Sweet dew albumen 1%
Water is surplus.
In described cultural solid organic compost, heavy metal is copper, zinc, arsenic, selenium.
Another object of the present invention is to provide the above-mentioned eluent of a kind of use to heavy metal removal method in cultural solid organic compost, the steps include:
(1) organic compost having become thoroughly decomposed is placed in to cement pit, by account for organic compost volume 4-6 eluent doubly to it from top drip washing;
(2) within after drip washing 12-24 hour, carry out drip washing once with eluent again;
(3) after (2) drip washing water drip washing is once again;
(4) washing lotion after drip washing is collected, and add excessive sodium hydroxide, heavy metal precipitation in filtrate is separated out;
In described step (1) length of cement pit be 5-10 rice, wide be that 3 meters, height are 1.5 meters, both sides, cement pit bottom are high, middle low.In the middle of leacheate flows down, in the middle of bottom, be equipped with pvc pipe (bore aperture every 2cm, and wrap up with 80 object fine sand nets) and be used for collecting waste liquid.
Alkyl polyglycoside is bio-surfactant, and it has, and Environmental compatibility is good, chemical structure is various, with low cost and be easy to the advantages such as recovery, thereby can solve drip-rinsing process in the high restriction of cost.And bio-surfactant has the solubilising that can compare favourably with chemical surfactant, emulsification, the performance such as wetting, have a wide range of applications as the extraction agent of the drip-rinsing process of solid dung.
Phosphatidylethanolamine is a kind of amphipathic molecule, is made up of hydrophilic head and hydrophobic afterbody.Not only lipophilic but also hydrophilic, so there is emulsification function, is conducive to the combination of heavy metal ion and eluent.
First eluent is adsorbed on the surface of compost and heavy metal binding substances, and with heavy metal complexing, then by reduce surface tension change compost and heavy metal binding substances surface properties, thereby weakened the adhesivity between heavy metal ion and compost.Promoted separating of metal ion and compost, along with the continuous flushing of leacheate, complex compound departs from the micella of compost in eluent is combined, and metal is removed from compost.
Compared with prior art, the present invention has following beneficial effect:
(1) the drip washing equipment that the present invention adopts is simple, only needs a cement drip washing pond, and cost is low;
(2) use Bio-surface active eluent not change the nutritive element composition of compost, therefore, through bioleaching processing, the heavy metal concentration of composting production can greatly decline, and nutrient element loss is little simultaneously;
(3) biological chemistry eluent formula of the present invention is simple, and effect is remarkable, can have good removal effect to the copper existing in compost, zinc, arsenic, selenium simultaneously, has cost low, remediation efficiency high;
(4) the present invention's biological chemistry eluent used, the difference of the contained heavy metal contamination of compost of making for different material, can carry out certain adjustment to the concentration of eluent;
(5) the method is simple to operate, and convenient management is easy to realize industrialization.
Embodiment:
Embodiment 1
Be positioned in drip washing pond taking chicken manure, wheat straw as the matured compost of raw material.Adding alkyl polyglycoside 3%, phosphatidylethanolamine (phosphatidylcholine or phosphatidic acid) 2%, sweet dew albumen 1%, water is surplus, drip washing.Leacheate consumption is 4-6 times of compost volume.Drip washing every day once, continue 2 days, then water is as eluent drip washing 1 time, obtains the compost of removal heavy metal.The accumulative total clearance of each heavy metal species is: copper 66.2%, zinc 64.3%, arsenic 72.4%, selenium 55.9%.The content of the each heavy metal species after processing in compost is up to state standards.
Embodiment 2
Be positioned in drip washing pond taking pig manure, wheat straw as the matured compost of raw material.Adding alkyl polyglycoside 2.5%, phosphatidylethanolamine (phosphatidylcholine or phosphatidic acid) 1.5%, sweet dew albumen 1%, water is surplus, drip washing.Leacheate consumption is 4-6 times of compost volume.Drip washing every day once, continue 2 days, then water is as eluent drip washing 1 time, obtains the compost of removal heavy metal.The accumulative total clearance of each heavy metal species is: copper 73.1%, zinc 42.9%, arsenic 56.3%, selenium 46.8%.The content of the each heavy metal species after processing in compost is up to state standards.
Embodiment 3
Be positioned in drip washing pond taking cow dung, wheat straw as the matured compost of raw material.Adding alkyl polyglycoside 2%, phosphatidylethanolamine (phosphatidylcholine or phosphatidic acid) 2%, sweet dew albumen 1%, water is surplus, drip washing.Leacheate consumption is 4-6 times of compost volume.Drip washing every day once, continue 2 days, then water is as eluent drip washing 1 time, obtains the compost of removal heavy metal.The accumulative total clearance of each heavy metal species is: copper 47.1%, zinc 72.4%, arsenic 84.8%, selenium 86.2%.The content of the each heavy metal species after processing in compost is up to state standards.
Claims (4)
1. an eluent of removing heavy metal in cultural solid organic compost, is characterized in that: be prepared from by weight percentage by following component:
Alkyl polyglycoside 2%-4%
Phosphatidylethanolamine (phosphatidylcholine or phosphatidic acid) 1%-2%
Sweet dew albumen 1%
Water is surplus.
2. eluent according to claim 1, is characterized in that: in described cultural solid organic compost, heavy metal is copper, zinc, arsenic, selenium.
3. heavy metal removal method in a cultural solid organic compost, is characterized in that: comprise and use eluent as claimed in claim 1, the steps include:
(1) organic compost having become thoroughly decomposed is placed in to cement pit, by account for organic compost volume 4-6 eluent doubly to it from top drip washing;
(2) within after drip washing 12-24 hour, carry out drip washing once with eluent again;
(3) after (2) drip washing water drip washing is once again;
(4) washing lotion after drip washing is collected, and add excessive sodium hydroxide, heavy metal precipitation in filtrate is separated out.
4. method according to claim 3, it is characterized in that: in described step (1) length of cement pit be 5-10 rice, wide be that 3 meters, height are 1.5 meters, both sides, cement pit bottom are high, middle low, in the middle of leacheate flows down, in the middle of bottom, be equipped with pvc pipe (bore aperture every 2cm, and wrap up with 80 object fine sand nets) and be used for collecting waste liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410159858.2A CN103980041A (en) | 2014-04-21 | 2014-04-21 | Eluting agent for removing heavy metals in agricultural solid organic compost and removal method using the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410159858.2A CN103980041A (en) | 2014-04-21 | 2014-04-21 | Eluting agent for removing heavy metals in agricultural solid organic compost and removal method using the same |
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| Publication Number | Publication Date |
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| CN103980041A true CN103980041A (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410159858.2A Pending CN103980041A (en) | 2014-04-21 | 2014-04-21 | Eluting agent for removing heavy metals in agricultural solid organic compost and removal method using the same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110041109A (en) * | 2019-04-22 | 2019-07-23 | 刘坚 | A kind of preparation method of pig manure source bio-fertilizer |
| CN110040889A (en) * | 2019-05-06 | 2019-07-23 | 安徽科技学院 | A kind of sewage-treatment plant based on heavy metal pollution |
| CN112958619A (en) * | 2021-02-02 | 2021-06-15 | 辽宁工程技术大学 | Fermentation chemical remediation method and device for heavy metal polluted underground water |
| CN113979796A (en) * | 2021-12-02 | 2022-01-28 | 塔里木大学 | Compost treatment device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02180781A (en) * | 1989-01-04 | 1990-07-13 | Taki Chem Co Ltd | Fertilizer for tobacco |
| CN1872802A (en) * | 2006-06-23 | 2006-12-06 | 天津师范大学 | Eluate for compost of domestic waste of city, preprtion method and application |
| CN1962562A (en) * | 2006-12-05 | 2007-05-16 | 天津师范大学 | Spray washing method for removing heavy metal from domestic garbage compost |
| CN101628829A (en) * | 2009-07-06 | 2010-01-20 | 天津师范大学 | Application of acetic acid or acetic acid and ammonium sulfate for removing heavy metals in garbage compost |
-
2014
- 2014-04-21 CN CN201410159858.2A patent/CN103980041A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02180781A (en) * | 1989-01-04 | 1990-07-13 | Taki Chem Co Ltd | Fertilizer for tobacco |
| CN1872802A (en) * | 2006-06-23 | 2006-12-06 | 天津师范大学 | Eluate for compost of domestic waste of city, preprtion method and application |
| CN1962562A (en) * | 2006-12-05 | 2007-05-16 | 天津师范大学 | Spray washing method for removing heavy metal from domestic garbage compost |
| CN101628829A (en) * | 2009-07-06 | 2010-01-20 | 天津师范大学 | Application of acetic acid or acetic acid and ammonium sulfate for removing heavy metals in garbage compost |
Non-Patent Citations (1)
| Title |
|---|
| 包木太，等: "生物表面活性剂及其在重金属污染生态修复中的应用", 《城市环境与城市生态》, vol. 19, no. 5, 31 October 2006 (2006-10-31), pages 2 - 1 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110041109A (en) * | 2019-04-22 | 2019-07-23 | 刘坚 | A kind of preparation method of pig manure source bio-fertilizer |
| CN110040889A (en) * | 2019-05-06 | 2019-07-23 | 安徽科技学院 | A kind of sewage-treatment plant based on heavy metal pollution |
| CN112958619A (en) * | 2021-02-02 | 2021-06-15 | 辽宁工程技术大学 | Fermentation chemical remediation method and device for heavy metal polluted underground water |
| CN112958619B (en) * | 2021-02-02 | 2023-04-07 | 辽宁工程技术大学 | Fermentation chemical remediation method and device for heavy metal polluted underground water |
| CN113979796A (en) * | 2021-12-02 | 2022-01-28 | 塔里木大学 | Compost treatment device and method |
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Application publication date: 20140813 |