CN101134615A - Method for treating fresh water bloom by magnetic control modified coal ash and flocculating agent - Google Patents
Method for treating fresh water bloom by magnetic control modified coal ash and flocculating agent Download PDFInfo
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- CN101134615A CN101134615A CNA2006100862901A CN200610086290A CN101134615A CN 101134615 A CN101134615 A CN 101134615A CN A2006100862901 A CNA2006100862901 A CN A2006100862901A CN 200610086290 A CN200610086290 A CN 200610086290A CN 101134615 A CN101134615 A CN 101134615A
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- coal ash
- modified coal
- hydrochloric acid
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention discloses method and flocculant for treating fresh water bloom with magnetically modified fly ash. Acid modified fly ash is applied in flocculating algae cells, adsorbing nitride and phosphate, and enriching algae cells magnetically under the action of outer magnetic field, so as to minimize eutrophication of water and reduce water bloom effectively. Fly ash has low cost, certain adsorption capacity, wide source, stable performance and easy recovering.
Description
Technical field
The invention belongs to a kind of algae improvement method and flocculation agent.
Prior art
In recent years, the generation of the rivers,lakes and seas wawter bloom of China, development have caused the extensive concern of various circles of society, large-area algal bloom, havoc the balance and stability of aquatic ecosystem, not only influenced water landscape, influenced the development of culture fishery, and algae toxicity has constituted the threat to environment for human survival.Only red tide reaches more than billions of units for the coastal financial loss that causes every year, so breaking out of algae becomes a kind of disaster.Cause that main nutrient elements that algal tufa breaks out is that nitrogen, phosphorus, particularly phosphorus in the water body plays critical effect.Remove the algal bloom method than popular at present and roughly can be summed up as physics method, chemical method and biological process.
Physics method physical method is (as high pressure ionization, high-voltage pulse, alternating intense magnetic field, ultraviolet ray, ultrasonic wave etc.) then be to be converted into chemical energy with electric energy, change molecular structure and the character enter water body or water body material, reach and kill and wound, kill impurity in algae and decomposition, the adsorbed water body, reach the purpose that purifies water system.This advantage is not destroyed water body, noresidue, but physics to kill and wound be relation of equal quantity, it is big more to kill and wound life entity, consumption is many more, it is many more to kill and wound many more energy consumptions, water quality impurity is many more, it is many more to consume energy.The method that comprises mechanical process in addition or manually salvage algae and take to dredge, the former can only can not tackle the problem at its root as easy supplementary means, and expends a large amount of manpower and materials, has little effect.
Chemical method: mainly be to adopt various chemical algae removing agent, its most pronounced effects, but also have most danger, thus very prudent when using, in strict accordance with the consumption operation that requires, otherwise can cause serious consequence.Because the chemical ingredients of these algicide is the copper compound of processable, perhaps chelated copper class material, these compounds produce injury to a certain degree even cause death the Shui nationality such as fish pasture and water are biological, and carcinogenesis is arranged, and also can produce other some uncertain bad sequela.
Biological process: the biological restoration algicide is at tens kinds of living microorganisms and the corresponding enzyme of handling eutrophication water, it is a kind of pure biotechnological formulation of All Pure Nature, the hydrobiont in the water body and the mankind etc. are not produced any harm and side effect, in a single day product drops into water body, the algae competition nutrition source in rapid activation of the microorganism in the product and the water, thus make algae lack nutrition death, sink under water, increasing microorganism continues the dead algae of degraded, until elimination, makes water body become clear.But biological process particularly the method for restoration of the ecosystem among a small circle, the control of algal tufa is an important method in the FX. but these class methods often need to drop in advance huge artificial engineering, to create and control suppresses the condition of required waterplant of algal tufa (bottom low in transparency as submerged plant or that lack suitable bed mud is difficult to existence) or animal survival, thereby take effect slow, cost is high, the difficult improvement that generally is applicable to big area, sudden algal tufa.
Above several method, though can play the effect of alleviation to a certain extent to wawter bloom, they have, and a common shortcoming---phosphor-removing effect is not obvious, can not solve the key issue that algal tufa breaks out, and cures the symptoms, not the disease.
Therefore, the present invention has studied a kind of quick and cheap algae-removing method at this problem, this technology is the adsorption-flocculation algae effectively, simultaneously can rapidly algae be shifted out water body by the effect of foreign field again, and to nitrogen, phosphorus removal effect highly significant in the water body, can accomplish to treat both principal and secondary aspect of disease, fundamentally remove algal tufa and break out the harm that brings.
Summary of the invention
The invention provides a kind of method and flocculation agent for the treatment of fresh water bloom by magnetic control modified coal ash, utilize flyash flocculation frustule after the sour modification and adsorption of nitrogen, phosphorus, utilize the magnetic responsiveness of magnetic on one side, enrichment frustule apace under the effect of outside magnetic field, transport the lake region, it is minimum that the degree of body eutrophication is dropped to, and effectively lowers algal tufa and break out the pressure that brings.Material therefor flyash is a kind of cheapness, has certain adsorption capacity, and the source is wide, stable performance is easy to reclaim.
A kind of method for the treatment of fresh water bloom by magnetic control modified coal ash, it is characterized in that may further comprise the steps: (1), with hydrochloric acid and flyash by 1 μ L-3 μ L: the proportioning hybrid reaction of 10mg makes modified coal ash, (2), modified coal ash is added in the water contain algae to the modified coal ash final concentration be 20-50mg/L, stir, (3), magnetic is added in the reaction tank to the magnetic final concentration be 10-50mg/L, stir, (4), outside algae liquid, magnetic field is set, absorption removes in the water body objectionable impuritiess such as algae fast.
Described hydrochloric acid can be substituted by other mineral acid or organic acid.
The flocculation agent for the treatment of fresh water bloom by magnetic control modified coal ash is characterized in that being made up of hydrochloric acid, flyash, magnetic, and its proportion of composing is:
Hydrochloric acid 1 μ L-3 μ L
Flyash 10mg
Magnetic 5-10mg
Hydrochloric acid and flyash mix the back to be placed, and magnetic is placed separately.
The flocculation agent for the treatment of fresh water bloom by magnetic control modified coal ash is characterized in that described hydrochloric acid can be substituted by other mineral acid or organic acid.
Advantage of the present invention:
1. the frustule clearance reaches more than 99%, total nitrogen reduces about 85%, total phosphorus and reduce about 90%, COD and reduce about 95%, turbidity and reduce by 100%.
2. this method turns waste into wealth, and can suppress algal tufa to a certain extent, can alleviate flyash again and pile up the pressure that causes.
3. the synergy of performance magnetic and modified coal ash, existing adsorption-flocculation has strong magnetic responsiveness again, makes that objectionable impurities such as algal tufa is shifted out under the action of a magnetic field fast, has stopped secondary pollution.
The present invention has popularizing application prospect in the fields such as eutrophication in marine red tide and lake.
Embodiment
Hydrochloric acid and flyash are made modified coal ash by the mixed reaction of 1 μ L-3 μ L: 10mg.The modified coal ash of 20-50mg/L is added in the algae liquid, and normal speed stirs about 1min.Magnetic with 10-50mg/L is added in the reaction tank then, normal fast stir about 1min.Utilize the magnetic responsiveness of magnetic at last, objectionable impuritiess such as algae are removed down fast in the water body in the effect of outside magnetic field.
Claims (4)
1. the method for a treating fresh water bloom by magnetic control modified coal ash, it is characterized in that may further comprise the steps: (1), with hydrochloric acid and flyash by 1 μ L-3 μ L: the proportioning hybrid reaction of 10mg makes modified coal ash, (2), modified coal ash is added in the water contain algae to the modified coal ash final concentration be 20-50mg/L, stir, (3), magnetic is added in the reaction tank to the magnetic final concentration be 10-50mg/L, stir
(4), outside algae liquid, magnetic field is set, absorption removes in the water body objectionable impuritiess such as algae fast.
2. method according to claim 1 is characterized in that described hydrochloric acid can be substituted by other mineral acid or organic acid.
3. the flocculation agent for the treatment of fresh water bloom by magnetic control modified coal ash is characterized in that being made up of hydrochloric acid, flyash, magnetic, and its proportion of composing is:
Hydrochloric acid 1 μ L-3 μ L
Flyash 10mg
Magnetic 5-10mg
Hydrochloric acid and flyash mix the back to be placed, and magnetic is placed separately.
4. the flocculation agent for the treatment of fresh water bloom by magnetic control modified coal ash is characterized in that described hydrochloric acid can be substituted by other mineral acid or organic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100862901A CN101134615B (en) | 2006-08-30 | 2006-08-30 | Method for treating fresh water bloom by magnetic control modified coal ash and flocculating agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100862901A CN101134615B (en) | 2006-08-30 | 2006-08-30 | Method for treating fresh water bloom by magnetic control modified coal ash and flocculating agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101134615A true CN101134615A (en) | 2008-03-05 |
| CN101134615B CN101134615B (en) | 2010-09-22 |
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| CN2006100862901A Expired - Fee Related CN101134615B (en) | 2006-08-30 | 2006-08-30 | Method for treating fresh water bloom by magnetic control modified coal ash and flocculating agent |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870510A (en) * | 2010-06-01 | 2010-10-27 | 浙江大学 | Phosphorus-removing algae-inhibiting agent and application thereof |
| CN108911073A (en) * | 2018-07-16 | 2018-11-30 | 湖北文理学院 | A kind of flocculant and preparation method thereof |
| CN109133228A (en) * | 2018-11-06 | 2019-01-04 | 知合环境（北京）有限责任公司 | A kind of de- algae Dephosphorization reagent, preparation method and its application for eutrophied water treatment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020092619A (en) * | 2001-06-05 | 2002-12-12 | 김창균 | Method for the physical and chemical coagulation and flocculation treatment water and wastewater using a slag and a fly ash |
| CN1175927C (en) * | 2003-01-17 | 2004-11-17 | 中唯炼焦技术国家工程研究中心有限责任公司 | Modified adsorbent of fly ash and method for treating waste water by using absorbent |
-
2006
- 2006-08-30 CN CN2006100862901A patent/CN101134615B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870510A (en) * | 2010-06-01 | 2010-10-27 | 浙江大学 | Phosphorus-removing algae-inhibiting agent and application thereof |
| CN101870510B (en) * | 2010-06-01 | 2012-05-16 | 浙江大学 | Phosphorus-removing algae-inhibiting agent and application thereof |
| CN108911073A (en) * | 2018-07-16 | 2018-11-30 | 湖北文理学院 | A kind of flocculant and preparation method thereof |
| CN109133228A (en) * | 2018-11-06 | 2019-01-04 | 知合环境（北京）有限责任公司 | A kind of de- algae Dephosphorization reagent, preparation method and its application for eutrophied water treatment |
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| Publication number | Publication date |
|---|---|
| CN101134615B (en) | 2010-09-22 |
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Granted publication date: 20100922 Termination date: 20110830 |