CN102701511A - Method and apparatus for wastewater treatment and heavy metal recycling by non-stationary type bio-adsorbent - Google Patents
Method and apparatus for wastewater treatment and heavy metal recycling by non-stationary type bio-adsorbent Download PDFInfo
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- CN102701511A CN102701511A CN2011100743477A CN201110074347A CN102701511A CN 102701511 A CN102701511 A CN 102701511A CN 2011100743477 A CN2011100743477 A CN 2011100743477A CN 201110074347 A CN201110074347 A CN 201110074347A CN 102701511 A CN102701511 A CN 102701511A
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Abstract
The invention relates to the field of water treatment, and specifically relates to a method and an apparatus for adsorbed wastewater treatment and heavy metal recycling. The structure comprises a mixing reactor and a sterilizing filter which are connected together. A recycling separation unit is connected in parallel between the sterilizing filter and the mixing reactor. The treatment method comprises the steps of mixing the wastewater to-be-treated with a bio-adsorbent, adjusting the pH value at between 4 to 5, reacting in the mixing reactor, carrying out solid-liquid separation for the mixture of the adsorbent and the wastewater after reaction and the liquid flows back to the mixing reactor to continue the treatment, removing heavy metal ions in the adsorbent by elution of a desorption solution, and returning the regenerated adsorbent which has been separated and back to the mixing reactor. The adsorbent is yeast or cell wall membranes of the yeast. The method and the apparatus can recycle the heavy metals, and is low in power consumption.
Description
Technical field
The present invention relates to water treatment field, be specially adsorption treatment waste water and reclaim method and apparatus, especially the free-standing biological adsorption agent processing trade effluent of heavy metal and the device of recovery heavy metal.
Background technology
Along with the production capacity of industry is growing, its demand for the energy and environment aspect more shows nervous.The capital construction of Traditional industrial wastewater treatment methods is taken up an area of big; Processing mode is single, and material expends many, and treatment capacity can be limited; And can't recycle for part waste water composition capable of using; From the forties in last century, after Ruchhoft effectively removed the Pu in the water with the method for the biology absorption of its name, people had carried out a large amount of research to this.In recent years, certain going deep into arranged for the biological absorption mechanism of bacterium, actinomycetes, yeast and mould, but also not really thorough.Theoretical point view thinks that biological absorption comprises that mainly electrostatic attraction, complexing, IX, microdeposit, redox reaction, corresponding materializing procedure mainly rely on surperficial some of organisms cell wall film to have the group of metal complex, coordination ability to have an effect like hydroxyl, carboxyl, amino, carboxamido-group and phosphoryl etc.
Methods such as all kinds of chemical agents, or settling tank are added in existing traditional treatment method such as the absorption of materialization deposition usually, are prone to cause secondary pollution or treatment time long, especially can not effectively separate utilization again for wherein industrial components such as heavy metal ion.
Domestic aspect emerging Technology of Sewage processing; " contain the heavy metal ion sewage works " like 08 Gansu in end of the year Jinchuan company; Adopt the physico-chemical processes deposition to remove the heavy metal ion in the trade effluent, but the capital construction cost is high, the required inventory of daily processing waste water greatly and can't regenerate.Nantong name sky environmental protection in 09 year also with integrated each operation of physico-chemical process deposition absorption principle, produces sewage treating machine and directly directly disposes of sewage at manufacturing enterprise's blowdown end, and both results are desirable; But gac is as main sorbent material; There is technical bottleneck in it for resilient colloid wastewater treatment; Must before absorption, add acvator, precipitation agent, the surely agent etc. of wadding a quilt with cotton; The regeneration energy consumption of gac of in addition adsorbing usefulness is big, and the heavy metal desorption efficient after the absorption is not high, and these are just explaining that also it is not best absorption and treatment process.
For biosorption process; Toray is on second half 2010 technology the coiling strainer with biological adsorption agent stuck-at-0um remarkable with it; The activated charcoal pellets of mixing diameter and be 2mm～20mm directly is used for reclaiming the heavy metal of trade effluent, and way of recycling is directly to burn.Hold a safe lead in the whole world based on its ultra micro immobilization technology, be used for big batch as the fixation method of sorbing material and use, also be weak aspect the practicality of present stage at least.
And handle waste water for the on-fixed method; 2010 the end of the year korean company issued mikrobe on-fixed method process result for icecream production waste water; This scheme adopts waste water directly to mix with flora; Obviously shortened adsorption time, a kind of new treatment process is provided, water outlet COD reaches U.S. NPDES emission standard.This technical scheme is not recycled the aspect to the effective constituent in the waste water and is deepened.
The present invention takes the on-fixed method to efficient absorption of the heavy metal ion in the waste water and recycling on the basis of existing technology.
Summary of the invention
The present invention aims to provide the method that a kind of free-standing biological adsorption agent is handled waste water and reclaimed heavy metal.
The present invention also provides the device of realizing aforesaid method.
A kind of free-standing biological adsorption agent is handled trade effluent and is reclaimed the device of heavy metal, and structure comprises mixing reactor and the sterilizing filter that links together;
Parallelly connected recovery separating unit between sterilizing filter and the mixing reactor; Reclaim separating unit and comprise just filter pocket, parsing pond, recovery separator tank and parsing bucket; Mixing reactor and first filter pocket, resolve the pond and reclaim separator tank, be connected successively and form the loop; Just be connected with the technology valve between filter pocket, mixing reactor and the sterilizing filter;
Resolving bucket is connected with recovery separator tank and parsing pond respectively.
And the mixed reaction pond upper reaches are connected with titration bucket, activated bath and sewage equalizing tank.
Treatment process does, pending waste water is mixed with biological adsorption agent, and the pH value is adjusted to 4～5, handles at the mixing reactor internal reaction; With the mixture solid-liquid separation of reacted sorbent material and waste water, the liquid flow back-mixing is closed reactor drum and is continued to handle;
Remove heavy metal ion on the sorbent material with the desorbed solution wash-out; Sorbent material after the regeneration is got back to mixing reactor after separating; The desorbed solution of washing is reusable; The principle of resolving is the process of under H ion acidic conditions under the environment of membranous wall surface, exchanging with the metals ion that is adsorbed.
In resolving the pond, wash the surperficial metals ion of biological adsorption agent with desorbed solution, filtering separation, biological adsorption agent is got back to mixing reactor and is continued to use.
Above-mentioned duration of the reaction is 1～6 hour.Waste water through after the aforesaid method processing can reach national secondary sewage drainage standard at present.The waste water that to handle then is after solid-liquid separation, and biological adsorption agent is reusable, and the waste water after the processing can discharge or reuse.Heavy metal ion in the waste water concentrates in the desorbed solution, recyclable utilization.
Employed biological adsorption agent is yeast or saccharomycetic cell envelope, and available before use ultrasonication emulsification separating impurity (as removing phenolic group etc.) also is dispersed in the suspension liquid biological adsorption agent.
When described biological adsorption agent is yeast, with the amount ratio of waste water be 5～50g/L; When used biological adsorption agent is yeast cell wall film, with the amount ratio of waste water be 0.1～5g/L, be preferably 0.5～2g/L.
Yeast can be selected the dead meal of pharmaceutical factories such as cereuisiae fermentum, proteolytic enzyme yeast or brewery for use.
The preparation method of yeast cell wall film does, in yeast, adds zymophage (as having a liking for bacterium yeast etc.), and the reaction back is with pyroprocessing kill yeast and phage, materials such as elimination plastosome, nucleus, acquisition yeast cell wall adventitia.
With supersound process activation in 10～15 minutes, the effect of supersound process is that milky disease is removed impurity such as phenolic group to biological adsorption agent before reaction, and thalline effectively is scattered in the suspension liquid.
Methods such as all kinds of chemical agents, or settling tank are added in the absorption of existing traditional treatment method such as materialization deposition usually, are prone to cause secondary pollution or treatment time long, especially can not effectively separate utilization again for wherein industrial components.The present invention adopts the nonactive yeast of mikrobe, and especially the yeast dead meal as industrial waste is that main absorption raw material is handled waste water, does not add other materials in the technological process, and pollution-free, nontoxic and safety meets environment protection requirement.
Recycling reaches the conditions of demand of utilizing the aspect again to this project to trade effluent to manufacturing enterprise; Provide a kind of brand-new nonactive microbiological processes to handle waster water process and device; Can be with extremely low energy consumption, nontoxic non-secondary pollution and optionally reclaim heavy metal ion and reach emission standard and realize recycle.The present invention provides less energy-consumption for manufacturing enterprise aspect wastewater treatment, nontoxic cleaning, economical device and treatment process.Through the waste water of the inventive method and apparatus processes, can reach sewage drainage standard and can reuse; But the heavy metal market reuse of reclaiming has simultaneously also produced certain economic benefits.
Description of drawings
Fig. 1 is the structural representation of treatment unit among the embodiment 1.
1-mixing reactor, 2-activated bath, 3-titration bucket, 31-volume pump, 32-sewage equalizing tank, 4-sterilizing filter, 5-are resolved bucket, and 61-is filter pocket just, and 62-resolves the pond, and 63-reclaims separator tank, 64-volume pump, 65-technology valve, 66-water shoot
Embodiment
Below in conjunction with embodiment the present invention is done further in detail, intactly explains:
As shown in Figure 1, a kind of free-standing biological adsorption agent is handled trade effluent and is reclaimed the device of heavy metal, and structure comprises mixing reactor 1, be equipped with basic soln or acidic solution titration bucket 3, the activated bath 2 of biological adsorption agent (yeast etc.) is housed;
The sewage equalizing tank that pending waste water is housed is connected respectively to mixing reactor; Mixing reactor is connected to sterilizing filter through technology valve 65 through water shoot 66;
Simultaneously, be provided with the recovery separating unit between sterilizing filter and the mixing reactor; Reclaim the parsing bucket 5 that separating unit comprises first filter pocket 61, parsing pond 62, recovery separator tank 63 and desorbed solution is housed; Mixing reactor and first filter pocket 61, resolve pond 62 and reclaim separator tanks 63 and be connected successively and form the loop; Just be connected with technology valve 65 between filter pocket, mixing reactor and the sterilizing filter;
The parsing bucket 5 that desorbed solution is housed is connected with recovery separator tank and parsing pond respectively; Resolve bucket and resolve between the pond and be provided with volume pump 64.
In the use, waste water is acid, wherein contained Cu
2+Ionic concn is 200mg/L.
Treatment process does; It is the NaOH solution of 0.1M that concentration is housed in the titration bucket 3; Biological adsorption agent is housed in the activated bath, and biological adsorption agent is a depleted saccharomyces cerevisiae suspension-s behind the brewery fermentations, and biological adsorption agent is uniformly dispersed with ultrasonication activation in 10～15 minutes;
1000L waste water extracted out from the sewage equalizing tank send into mixing reactor 1, NaOH solution and biological adsorption agent are together sent into mixing reactor with volume pump 31.The waste water pH value that mixes back entering mixing reactor is 4～5, biological adsorption agent consumption 35Kg;
After the feeding,, regulate the technology valve, close the path between mixing reactor and the sterilizing filter, make the mixture of reacted biological adsorption agent and waste water get into filter pocket just waste water stirring reaction in mixing reactor; Through solid-liquid separation, liquid flows back to mixing reactor through technology valve 65 by water shoot 66 to be continued to handle in first filter pocket; Biological adsorption agent gets into resolves the pond;
A pond is resolved in a desorbed solution suction with volume pump 64 will be resolved in the bucket, in resolving the pond, to the biological adsorption agent washing that recoils, heavy metal ion adsorbed on the biological adsorption agent is washed; Biological adsorption agent separates in reclaiming separator tank with the mixture of desorbed solution, and the biological adsorption agent after the washing is sent the mixing reactor reuse back to, and desorbed solution is got back to and resolved in the bucket.Desorbed solution is 0.1MHCl solution or sulphuric acid soln.
Aforesaid operations continues to regulate the technology valve after 6 hours, closes the path between mixing reactor and the first filter pocket, and the mixture waste water of biological adsorption agent and waste water is sent into sterilizing filter, and the waste water after handling is separated with biological adsorption agent.Biological adsorption agent can reuse after washing; Content of copper ion is lower than 1mg/L in the waste water after the processing, and contents level reaches national sewage second-level emission standard.
After the aforesaid method processing, heavy metal ions in wastewater is enriched in the desorbed solution, the recyclable heavy metal ion of utilizing.Sorbent material can use 10～30 times repeatedly.
The free-standing biological adsorption agent is handled the device of trade effluent and recovery heavy metal with embodiment 1.
In the use, waste water is acid, wherein contained Ni
2+Ionic concn 240mg/L, Cu
2+Ionic concn is 110mg/L.
Treatment process does; It is the NaOH solution (or other basic solns) of 0.5M that concentration is housed in the titration bucket 3; Biological adsorption agent is housed in the activated bath; Biological adsorption agent is the discarded yeast wall film suspension-s of biological fermentation production of protein enzyme, and biological adsorption agent is uniformly dispersed with ultrasonication activation in 10～15 minutes;
The preparation method of yeast cell wall film does, in yeast, adds zymophage (as having a liking for bacterium yeast etc.), and the reaction back is with pyroprocessing kill yeast and phage, materials such as elimination plastosome, nucleus, acquisition yeast cell wall adventitia;
1000L waste water extracted out from the sewage equalizing tank send into mixing reactor 1, NaOH solution and biological adsorption agent are together sent into mixing reactor with volume pump 31.The waste water pH value that mixes back entering mixing reactor is 4～5, and the biological adsorption agent consumption is 1Kg.
After the feeding,, regulate the technology valve, close the path between mixing reactor and the sterilizing filter, make the mixture of reacted biological adsorption agent and waste water get into filter pocket just waste water stirring reaction in mixing reactor; Through solid-liquid separation, liquid flows back to mixing reactor through technology valve 65 by water shoot 66 to be continued to handle in first filter pocket; Biological adsorption agent gets into resolves the pond;
A pond is resolved in a desorbed solution suction with volume pump 64 will be resolved in the bucket, in resolving the pond, to the biological adsorption agent washing that recoils, heavy metal ion adsorbed on the biological adsorption agent is washed; Biological adsorption agent separates in reclaiming separator tank with the mixture of desorbed solution, and the biological adsorption agent after the washing is sent the mixing reactor reuse back to, and desorbed solution is got back to and resolved in the bucket.Desorbed solution is 0.2MHCl solution or sulphuric acid soln.
Aforesaid operations continues to regulate the technology valve after 4 hours, closes the path between mixing reactor and the first filter pocket, and the mixture waste water of biological adsorption agent and waste water is sent into sterilizing filter, and the waste water after handling is separated with sorbent material.Sorbent material can reuse after washing; Nickel ion content is lower than 1mg/L in the waste water after the processing, and content of copper ion is lower than 1mg/L, and contents level reaches emission standard, can discharge or reuse by actual demand.
Claims (8)
1. a free-standing biological adsorption agent is handled trade effluent and is reclaimed the device of heavy metal, it is characterized in that structure comprises mixing reactor and the sterilizing filter that links together;
Parallelly connected recovery separating unit between sterilizing filter and the mixing reactor; Reclaim separating unit and comprise just filter pocket, parsing pond, recovery separator tank and parsing bucket; Mixing reactor and first filter pocket, resolve the pond and reclaim separator tank, be connected successively and form the loop; Just be connected with the technology valve between filter pocket, mixing reactor and the sterilizing filter;
Resolving bucket is connected with recovery separator tank and parsing pond respectively.
2. the said free-standing biological adsorption agent of claim 1 is handled the device of trade effluent and recovery heavy metal, it is characterized in that the said mixed reaction pond upper reaches are connected with titration bucket, activated bath and sewage equalizing tank.
3. a free-standing biological adsorption agent is handled trade effluent and is reclaimed the method for heavy metal, it is characterized in that step comprises:
Pending waste water is mixed with sorbent material, and the pH value of waste water is adjusted to 4～5, handles at the mixing reactor internal reaction; Described sorbent material is yeast or saccharomycetic cell envelope;
With the mixture solid-liquid separation of reacted sorbent material and waste water, the liquid flow back-mixing is closed reactor drum and is continued to handle;
Remove heavy metal ion on the sorbent material with the desorbed solution wash-out; Sorbent material after the regeneration is got back to mixing reactor after separating;
Above-mentioned reaction continues 1～6 hour; Waste water after the processing is through solid-liquid separation discharging or reuse.
4. the said free-standing biological adsorption agent of claim 3 is handled trade effluent and is reclaimed the method for heavy metal, it is characterized in that, when described biological adsorption agent is yeast, with the amount ratio of waste water be 5～50g/L; When used biological adsorption agent is yeast cell wall film, with the amount ratio of waste water be 0.1～5g/L.
5. the said free-standing biological adsorption agent of claim 3 is handled trade effluent and is reclaimed the method for heavy metal, it is characterized in that, when used biological adsorption agent is yeast cell wall film, with the amount ratio of waste water be 0.5～2g/L.
6. the said free-standing biological adsorption agent of claim 3 is handled the method for trade effluent and recovery heavy metal, it is characterized in that described desorbed solution is an acid solution, and hydrogen ion content is 0.1～2M.
7. the said free-standing biological adsorption agent of claim 3 is handled the method for trade effluent and recovery heavy metal, it is characterized in that the concentration of pending heavy metal ions in wastewater is 10～200mg/L.
8. the said free-standing biological adsorption agent of claim 3 is handled trade effluent and is reclaimed the method for heavy metal, it is characterized in that, described sorbent material before reaction with supersound process activation in 10～15 minutes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100743477A CN102701511A (en) | 2011-03-28 | 2011-03-28 | Method and apparatus for wastewater treatment and heavy metal recycling by non-stationary type bio-adsorbent |
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| CN2011100743477A CN102701511A (en) | 2011-03-28 | 2011-03-28 | Method and apparatus for wastewater treatment and heavy metal recycling by non-stationary type bio-adsorbent |
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| CN103435189A (en) * | 2013-08-30 | 2013-12-11 | 武汉市硕隽科技有限公司 | Method for purifying electroplating wastewater |
| CN105621631A (en) * | 2016-03-18 | 2016-06-01 | 河海大学 | Bioremediation device and method for continuously adsorbing metal ions by adopting active yeast |
| CN108383289A (en) * | 2018-05-03 | 2018-08-10 | 长春工程学院 | Utilize the device and method of heavy metal in magnetic Nano material treated sewage |
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| US20060070949A1 (en) * | 2004-10-06 | 2006-04-06 | Universidad De Chile | Process and plant for the removal of metals by biosorption from mining or industrial effluents |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103435189A (en) * | 2013-08-30 | 2013-12-11 | 武汉市硕隽科技有限公司 | Method for purifying electroplating wastewater |
| CN105621631A (en) * | 2016-03-18 | 2016-06-01 | 河海大学 | Bioremediation device and method for continuously adsorbing metal ions by adopting active yeast |
| CN105621631B (en) * | 2016-03-18 | 2018-03-20 | 河海大学 | Continue the biological prosthetic device and method of adsorbing metal ions using active dry yeasr |
| CN108383289A (en) * | 2018-05-03 | 2018-08-10 | 长春工程学院 | Utilize the device and method of heavy metal in magnetic Nano material treated sewage |
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