CN101362612A - Algal bloom pretreatment technology method through rare-earth magnetic disc in water-supply plant - Google Patents
Algal bloom pretreatment technology method through rare-earth magnetic disc in water-supply plant Download PDFInfo
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Abstract
The invention relates to a rare-earth magnetic disc pretreatment algal bloom technical method of a water supply plant, the technical method is composed of a reaction tank, a rare-earth magnetic disc separation and purification algal bloom device, a magnetic squeezing dewatering machine, and the like, an algal bloom medicament is added into the reaction tank by a feeding device, generated algal bloom flocks are magnetic, and a water body is separated by absorption when the water body passes through a magnetic separation device. After the pretreatment, the water is clean and transparent, the removal rate of the algal bloom and algal toxins is more than 95 percent, and the water can directly enter a follow-up process treatment facility for continuous treatment. The magnetic algal bloom flocks which are separated by the device are dewatered via the magnetic squeezing dewatering machine.
Description
Affiliated technical field
The invention belongs to water treatment field, particularly relate to a kind of technological method that comes the contained algal tufa in pre-treatment water-supply plant water source by rare-earth magnetic disc.
Background technology
Be subjected to the influence of mankind's activity in recent years, the water body eutrophication degree aggravation has promoted the algae grows breeding.Algal grown makes water body present certain colourity in the water body, produces peculiar smell, and can stop up the filter tank.The part algae also decomposites the algae toxin that is detrimental to health, and causes to Urban water supply to have a strong impact on.
In order to tackle the pollution of waterhead area algae, water factory usually by preoxidation (dioxide peroxide, ozone, potassium permanganate etc.), copper sulfate algae removal, strengthen coagulation, wait with the activated carbon adsorption measure and handle.But still there are some shortcomings in above technology and method: as adopting ozonize, the equipment complexity is invested greatly, and current consumption is big, when poisonous algae exists, can increase the algae content of toxins in the water, causes secondary pollution; Potassium permanganate oxidation can cause the colourity problem; The copper sulfate algae removal is a kind of traditional method, and killing algae is a process more slowly, and copper sulfate is residual chronic in water body, if can not effectively remove in subsequent treatment process, will all produce murder by poisoning to people and aquatic organism; Strengthen measures such as coagulation, can roll up reagent cost, the flco that produces because of conventional flocculation agent PAC is loose, is difficult for precipitation, also is unfavorable for follow-up removal, and the PAM effect of flocculant is good, but that the monomer in the product contains is toxic.
Summary of the invention
The deficiency that contains former water pretreatment technology in algal tufa water source and method existence at above-mentioned processing, the present invention proposes a kind of rare-earth magnetic disc preconditioning technique method of water-supply plant, it can solve the deficiency of existing Technology effectively, by adding separating except that algal tufa medicament and rare-earth magnetic disc, can remove algal tufa more than 95% and the algae toxin in the water body, the subsequent technique facility of water factory can normally be moved, guarantee that the quality that supplies water reaches standard for drinking.
The present invention is achieved through the following technical solutions:
Technical process of the present invention is: former water (lake water, reservoir water etc.) → reaction box (add and remove the algal tufa medicament) → rare-earth magnetic disc isolation of purified algal tufa equipment (isolated magnetic algal tufa floc sedimentation is through the dehydration of magnetic force the squeezing machine) → subsequent technique treatment facility that contains algal tufa.
Technological method pre-treatment of the present invention contains the former water of algal tufa and is achieved in that by pump raw water pump is gone into to reaction box, add simultaneously except that the algal tufa medicament, the magnetic algal tufa flco that reaction forms, be suspended state, be difficult for precipitation, under hydraulic action, enter rare-earth magnetic disc isolation of purified algal tufa equipment and carry out the magnetic separation, algal tufa in the water body and algae toxin are removed, and the water after the processing enters the subsequent technique treatment facility.The magnetic algal tufa flco of separating, water content is higher, by an easy magnetic force squeezing machine dehydration, water ratio is reduced to about 60%.
The described algal tufa medicament that removes is a kind of magnetic flocculant, can add respectively or compound after add.When adding respectively, a kind of is magnetic inorganic polymer material, and coagulant aids is the organic polymer material; During compound adding, removing the algal tufa medicament is that inorganic carrying magnetic polymeric flocculant and organic polymer coagulant aids are composited.
The algal bloom pretreatment technology method through rare-earth magnetic disc of water-supply plant of the present invention is characterized in:
1. remove the algal tufa medicament and have magnetic, flocculating effect is good, and flco is difficult for precipitation, is beneficial to magnetic and separates;
2. rare-earth magnetic disc isolation of purified algal tufa equipment adopts tray type structure, and treatment capacity is big, and magnetic force is big, good separating effect, and floor space is little;
3. the algal tufa flco that comes out of rare-earth magnetic disc isolation of purified algal tufa device separates, carrying magnetic can pass through magnetic force squeezing machine simple realization dewatering operation.
The magnetic soil disk pre-treatment algal tufa technological method of water-supply plant of the present invention, it is simple to have flow process, and structures are few, reduced investment, treatment capacity is big, takes up an area of to lack, and algal tufa clearance advantages of higher, alternative existing conventional process techniques method.Wherein, rare-earth magnetic disc isolation of purified algal tufa equipment and magnetic force squeezing machine can use sophisticated industrial equipment, " scrape wheeled rare-earth magnetic disc isolation of purified equipment " and CN200420061121.9 " rare earth magnetic isolation of purified waste fitment " referring to the inventor's patent CN01247917.9 " magnetic force squeezing dewatering machine ", CN00244558.1.
Description of drawings
Technology of the present invention is shown in accompanying drawing one.
Among the figure, 1. contain the former water of algal tufa, 2. pump, 3. reaction box 4. removes the algal tufa medicament, 5. magnetic soil disk isolation of purified algal tufa equipment, 6. subsequent treatment process facility, 7. magnetic force squeezing dewatering machine, 8. magnetic algae-residue.
Embodiment
Below in conjunction with accompanying drawing technology method of the present invention is described further.
The former water (1) that at first contains algal tufa, be pumped in the reaction box (3) by pump (2), in reaction box, add except that algal tufa medicament (4) medicament and algae, algae toxin, other fine suspended substance generation flocculation reactions here, production magnetic algae flco by medicine machine.The magnetic algae flco that produces is in suspended state under hydraulics, do not precipitate, and enters rare-earth magnetic disc isolation of purified algal tufa equipment (5) then, and under the action of a magnetic field, flco is adsorbed in the disk disk body, by defeated slag device slave unit output.Treated water enters into subsequent treatment process facility (6).
The magnetic algal tufa floc sedimentation of separating device output through magnetic force squeezing dewatering machine (7) press dewatering, obtains water ratio at 60% magnetic algae-residue (8), and magnetic force squeezing dewatering machine frame mode is a drum-type, and surface electric field intensity is greater than 3000Gs.Removing algal tufa medicament (4) is magnetic inorganic polymer flocculant and organic polymer coagulant aids composition or the composite flocculation agent of the two.It is preceding that the former water of process hybrid reaction enters into magnetic separating apparatus (rare-earth magnetic disc isolation of purified algal tufa equipment), and reaction time is 5～30 seconds.The magnetic surface field intensity of magnetic separating apparatus is 1000Gs～5000Gs.The water quality of handling through magnetic separating apparatus is water white transparency, and the clearance of algal tufa and algae toxin is more than 95%, enter the subsequent disposal facility after, can easily be processed into the tap water that meets drinking water standard.
The present invention and existing technology relatively, not only make magnetic separating apparatus can be easily algal tufa, algae toxin from Separate in the water body, can also reach the fully purpose of decolouring. The present invention has reduced investment, occupation of land is little, and is pre-The processing water yield is big, and the characteristics that the magnetic separating treatment is effective can be used for containing the water such as preliminary treatment of the former water of algal tufa water head site Process field.
Claims (5)
1. the algal bloom pretreatment technology method through rare-earth magnetic disc of a water-supply plant, mainly constitute by reaction box, rare-earth magnetic disc isolation of purified algal tufa equipment, magnetic force squeezing dewatering machine, it is characterized in that: in reaction box, add except that the algal tufa medicament, by the medicament that adds, make in the former water algal tufa, algae toxin and other non magnetic suspended substance reaction bonded together, form magnetic algal tufa floc sedimentation, again by the magnetic separating apparatus isolation of purified.
2. the algal bloom pretreatment technology method through rare-earth magnetic disc of water-supply plant according to claim 1, it is characterized in that: adding remove the algal tufa medicament, when adding after compound, chitosan-containing, magnetic, clay, realize mixing, reacting by reaction box, flco is before entering magnetic separating apparatus, and reaction time is 5～30 seconds.
3. the algal bloom pretreatment technology method through rare-earth magnetic disc of water-supply plant according to claim 1, it is characterized in that: remove the algal tufa medicament by what chemicals dosing plant added, when adding respectively, add inorganic polymer compounds and magnetic earlier, inorganic polymer class such as aluminium salt, molysite and composite salt thereof, the back adds organic high molecular compound, as chitosan, PAM, with and derivative.
4. the algal bloom pretreatment technology method through rare-earth magnetic disc of water-supply plant according to claim 1, it is characterized in that: add the flco that produces behind the medicament, have magnetic, separate by rare-earth magnetic disc isolation of purified algal tufa equipment, equipment is tray type structure, magneticstrength is 1000～5000Gs between dish, pretreated water directly enters follow-up conventional processing facility, carry out advanced treatment, the flocculation tank and the first settling tank that also can replace common water-supply plant, directly enter later stage filtration treatment operation, obtain qualified tap water at last.
5. the algal bloom pretreatment technology method through rare-earth magnetic disc of water-supply plant according to claim 1, it is characterized in that: magnetic separating apparatus absorption, the magnetic algal tufa floc sedimentation that separates, exports, directly entering the magnetic force squeezing dewatering machine dewaters, obtain water ratio and be about 60% algae-residue, the magnetic force squeezing dewatering machine adopts core structure, and surface electric field intensity is greater than 3000Gs.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102627342A (en) * | 2012-04-19 | 2012-08-08 | 宁夏兴平精细化工股份有限公司 | Magnetic powder flocculating agent and application method thereof |
| CN103951144A (en) * | 2014-05-22 | 2014-07-30 | 四川环能德美科技股份有限公司 | Eutrophic wastewater treatment device and method |
| CN104787862A (en) * | 2015-04-27 | 2015-07-22 | 中国环境科学研究院 | Treatment method for eutrophic water and device |
| CN105884113A (en) * | 2014-12-31 | 2016-08-24 | 北京中力信达环保工程有限公司 | Electroplating nickel-containing wastewater pretreatment and nickel recycling device |
| CN108405180A (en) * | 2018-03-22 | 2018-08-17 | 沧州中铁装备制造材料有限公司 | A kind of rare-earth magnetic disc squeezer back purge system |
| CN111592006A (en) * | 2020-06-12 | 2020-08-28 | 上海交通大学 | Preparation method of modified clay and application method of modified clay for directionally recycling microalgae |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2412658Y (en) * | 2000-03-20 | 2001-01-03 | 四川冶金环能工程有限责任公司 | Rare-earth magnetic dick separation purifying apparatus |
| CN100519435C (en) * | 2005-08-12 | 2009-07-29 | 四川德美环境技术有限责任公司 | Magnetic flocculation separation waste water treatment technology |
| CN100519437C (en) * | 2006-01-26 | 2009-07-29 | 中国科学院等离子体物理研究所 | Composite type inorganic polymer water quality purifier and method of magnetic gathering algae eliminating |
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2007
- 2007-08-10 CN CN2007100497211A patent/CN101362612B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102627342A (en) * | 2012-04-19 | 2012-08-08 | 宁夏兴平精细化工股份有限公司 | Magnetic powder flocculating agent and application method thereof |
| CN103951144A (en) * | 2014-05-22 | 2014-07-30 | 四川环能德美科技股份有限公司 | Eutrophic wastewater treatment device and method |
| CN103951144B (en) * | 2014-05-22 | 2017-02-15 | 四川环能德美科技股份有限公司 | Eutrophic wastewater treatment device and method |
| CN105884113A (en) * | 2014-12-31 | 2016-08-24 | 北京中力信达环保工程有限公司 | Electroplating nickel-containing wastewater pretreatment and nickel recycling device |
| CN104787862A (en) * | 2015-04-27 | 2015-07-22 | 中国环境科学研究院 | Treatment method for eutrophic water and device |
| CN108405180A (en) * | 2018-03-22 | 2018-08-17 | 沧州中铁装备制造材料有限公司 | A kind of rare-earth magnetic disc squeezer back purge system |
| CN111592006A (en) * | 2020-06-12 | 2020-08-28 | 上海交通大学 | Preparation method of modified clay and application method of modified clay for directionally recycling microalgae |
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| CN101362612B (en) | 2010-12-22 |
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