CN101450304A - Heavy metal adsorbent preparation method using biogas residues - Google Patents
Heavy metal adsorbent preparation method using biogas residues Download PDFInfo
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- CN101450304A CN101450304A CNA2008102409489A CN200810240948A CN101450304A CN 101450304 A CN101450304 A CN 101450304A CN A2008102409489 A CNA2008102409489 A CN A2008102409489A CN 200810240948 A CN200810240948 A CN 200810240948A CN 101450304 A CN101450304 A CN 101450304A
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Abstract
The invention relates to technology of absorbent adsorbing and reclaiming heavy metals in natural water and wastewater, in particular to technology which obtains a high-efficiency adsorbent for heavy metals by subjecting methane dreg remained after methane fermentation to compression, filtration, air drying or drying and so on and uses the obtained high-efficiency adsorbent to adsorb and recover heavy metals in natural water and waster water. which is prepared from methane dreg remained after methane fermentation through treatments such as compression, filtration, airing or drying, and using the adsorbent to adsorb and reclaim the heavy metals in the natural water and wastewater.
Description
Technical field
The invention belongs to water-treatment technology field, relate to the heavy metal absorbent in a kind of absorption and recovery natural water body and the waste water.Specifically, be to utilize the remaining natural pond of biogas fermentation slag after overcompression, filtration, air-dry or oven dry etc. are handled, obtain a kind of efficient heavy adsorbent, and with its absorption, reclaim the method for heavy metal in natural water body and the waste water.
Background technology
Heavy metal pollution is mainly by due to the human factors such as mining, discarded discharging, sewage irrigation and use heavy metal goods.After heavy metal enters environment, will retain, accumulate and move, work the mischief.Heavy metal as discharging with waste water even concentration is little, also can accumulate in algae and bed mud, by the body surface of fish and shellfish absorption, produces food chain and concentrates, thereby work the mischief.Only be example with the heavy metal pollution of soil, the whole nation is annual because of more than 1,000 ten thousand tons in heavy metal pollution underproduction grain, and contaminated by heavy metals in addition grain also reaches 1,200 ten thousand tons every year, adds up at least 200 hundred million yuan of economic losses.The removal method of heavy metal mainly contains chemical precipitation method, oxidation-reduction method, air supporting method, electrolysis, ion-exchange, membrane separation process and absorption method etc. in the water body at present.Wherein absorption method low owing to its processing cost, do not produce secondary pollution and receive much concern.
Biomass material is the biogas of main component through behind the biogas fermentation except that generating with methane and carbon dioxide, and residue natural pond liquid and natural pond slag in addition ferment.The main component of natural pond slag is organic matter and humic acid, and it is mainly as fertilizer at present.But for the large-sized biogas engineering, produce a large amount of natural pond slags every day, only used as fertilizer, not only can not make it used to make the best, also can cause new secondary pollution.
Summary of the invention
The objective of the invention is to propose the method that a kind of natural pond slag prepares heavy metal absorbent, and a kind of absorption, reclaim the method for heavy metal in natural water body and the waste water in order to overcome the weak point that existing natural pond slag utilizes technology.The present invention has advantages such as preparation is simple, the material amount of having is few, with low cost, effective.
For achieving the above object, the method of utilizing the natural pond slag to prepare heavy metal absorbent provided by the invention, be to be raw material through producing the natural pond slag behind the biogas fermentation, after air-dry or oven dry, grind to form the powdery that particle diameter is 0.01mm～0.1cm, promptly get heavy metal absorbent with biomass material.Air-dry again or oven dry after the present invention can also compress raw material earlier.
Heavy metal absorbent provided by the invention can adsorb heavy metal in natural water body and the waste water, thereby controls heavy metal pollution of water body, recovery heavy metal.
The specific embodiment
Give further detailed explanation below by embodiment to technology of the present invention.
Embodiment 1: the preparation of heavy metal absorbent
Get the natural pond slag that produces behind the cattle manure biogas fermentation air-dry after, grind, sieve, making its particle diameter is 0.1mm, promptly makes heavy metal absorbent of the present invention.
Embodiment 2: heavy metal absorbent is to the adsorption effect of zinc ion
The Zn of configuration 2mg/L
2+Solution joins Zn with the adsorbent among the embodiment 1 with the concentration of 1g/L
2+In the solution, regulating pH value is 3.0, is put in 30 ℃ the constant temperature vibration case vibration 48 hours, Zn in the mensuration solution
2+Clearance be 93.2%.
Claims (4)
1, a kind of method of utilizing the natural pond slag to prepare heavy metal absorbent is raw material with biomass material through producing the natural pond slag behind the biogas fermentation, grinds to form powdery after drying, promptly gets heavy metal absorbent.
2, method according to claim 1, wherein, with dry again after the raw material compression earlier.
3, method according to claim 1, wherein, drying is to adopt air-dry or oven dry.
4, method according to claim 1, wherein, the particle diameter of powdery is 0.01mm～0.1cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102409489A CN101450304A (en) | 2008-12-24 | 2008-12-24 | Heavy metal adsorbent preparation method using biogas residues |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102409489A CN101450304A (en) | 2008-12-24 | 2008-12-24 | Heavy metal adsorbent preparation method using biogas residues |
Publications (1)
| Publication Number | Publication Date |
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| CN101450304A true CN101450304A (en) | 2009-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNA2008102409489A Pending CN101450304A (en) | 2008-12-24 | 2008-12-24 | Heavy metal adsorbent preparation method using biogas residues |
Country Status (1)
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| CN (1) | CN101450304A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011465A (en) * | 2012-12-07 | 2013-04-03 | 常州大学 | Method for removing chloride ion in sewage |
| CN103949213A (en) * | 2014-04-21 | 2014-07-30 | 广西大学 | Activated carbon based adsorbent composition for recovering sulfur dioxide and nitrogen gas from furnace gas generated by pyrite calcination |
| CN107324618A (en) * | 2017-09-04 | 2017-11-07 | 西南科技大学 | The system and method for the Qinghai-Tibet cold and oxygen deficient slaughtering wastewater of processing |
| CN108212098A (en) * | 2018-02-01 | 2018-06-29 | 北京市畜牧业环境监测站 | A kind of cow dung resourceization preparation helps method and the application of solidifying adsorbent |
| CN108636373A (en) * | 2018-06-01 | 2018-10-12 | 太原理工大学 | A kind of fungi is modified the preparation method of biogas residue heavy metal absorbent |
| CN111253944A (en) * | 2020-03-28 | 2020-06-09 | 河南恒天久大实业有限公司 | Method for preparing soil heavy metal passivator from biogas residues |
-
2008
- 2008-12-24 CN CNA2008102409489A patent/CN101450304A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011465A (en) * | 2012-12-07 | 2013-04-03 | 常州大学 | Method for removing chloride ion in sewage |
| CN103949213A (en) * | 2014-04-21 | 2014-07-30 | 广西大学 | Activated carbon based adsorbent composition for recovering sulfur dioxide and nitrogen gas from furnace gas generated by pyrite calcination |
| CN103949213B (en) * | 2014-04-21 | 2016-01-06 | 广西大学 | A kind of absorbent charcoal based adsorbent composition for reclaiming sulfur dioxide and nitrogen in roasting pyrite furnace gas |
| CN107324618A (en) * | 2017-09-04 | 2017-11-07 | 西南科技大学 | The system and method for the Qinghai-Tibet cold and oxygen deficient slaughtering wastewater of processing |
| CN108212098A (en) * | 2018-02-01 | 2018-06-29 | 北京市畜牧业环境监测站 | A kind of cow dung resourceization preparation helps method and the application of solidifying adsorbent |
| CN108636373A (en) * | 2018-06-01 | 2018-10-12 | 太原理工大学 | A kind of fungi is modified the preparation method of biogas residue heavy metal absorbent |
| CN111253944A (en) * | 2020-03-28 | 2020-06-09 | 河南恒天久大实业有限公司 | Method for preparing soil heavy metal passivator from biogas residues |
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Open date: 20090610 |