CN104909493A - Method used for inhibiting growth of green alga in water bodies - Google Patents
Method used for inhibiting growth of green alga in water bodies Download PDFInfo
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- CN104909493A CN104909493A CN201510273645.7A CN201510273645A CN104909493A CN 104909493 A CN104909493 A CN 104909493A CN 201510273645 A CN201510273645 A CN 201510273645A CN 104909493 A CN104909493 A CN 104909493A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
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Abstract
The invention discloses a method used for inhibiting growth of green alga in water bodies. According to the method, carbon dioxide is used for treating water so as to realize water acidification, pH value is reduced to 4 to 7, and preferably 6.5 to 7; and treated waste water is subjected to carbon dioxide treatment before discharging into lakes or rivers. Carbon dioxide, and preferably carbon dioxide obtained via industrial production is introduced into water to be processed so as to realize water acidification, inhibit green alga growth, and promote diatom growth; carbon dioxide is obtained via industrial processes, so that both water and the air can be purified by applying the industrial gas to water acidification.
Description
Technical field
The present invention relates to the method suppressing water system to grow as lake or river green algae.
Green alga is flourished and can cause the pollution problem in lake and river.Planktonic growth is usually owing to eutrophication.Showing that the algae species grown in water depends on the pH value of water to the research of ecology of plankton, is green alga in alkaline water, is diatom or diatom in sour water.Lake or the overgrowing of river green algae increase relevant with the pH value of contaminated water.The present invention propose a kind of by the water acidifying in lake or river to suppress chlorella growth and to promote the method for growth of diatom algae.
Background technology
In the mountain that lake basin is the end with grouan or other crystalloid rock, lake water is close to neutral or slightly acidic.PH value lower than 7, normally in 5.5-6.5 scope.Diatom is common planktonic organism, and they flourish at Hu Zhonghui, and local at some, the acidity of lake water can be stronger.The place dropping to less than 5 in the pH value of lake water does not then have organism, does not even have diatom.Lake water is bright but is also unanimated.
In hills or plains region, when lake basin with limestone or sedimentogeneous rock the end of for time, lake water is mainly alkalescence.The existence of Wingdale or other In Carbonate Rock can provide carbanion to carry out buffered acid.Such as, when the pH value range of lake zurich water is from about 7.4 during spring to summer 8.85.In alkaline lake-water, green alga is modal planktonic organism.The pH that the most remarkable chemical transformation of these polluted lakes of historical situation research display of lake zurich, Chinese yunnan Erhai and Dian Chi is lake water is risen.The most high ph-values of lake zurich and Erhai Zhong Shui is greater than 8.5 Dian Chi and is then greater than 9.Alkalescence increase is conducive to the growth of green alga and the deposition of lake chalk.To the research of paleolimnology, Switzerland and other regional personage confirm that the plankton species grown in lake depends on the pH of lake water.Such as, notice that frustule is the settling in spring when studying the season varve of lake zurich, precipitation has the lake chalk of green alga to be then the settling in summer and autumn.Winter, varve was usually clay level landwaste.The change of planktonic organism composition reflects the change of lake zurich water pH.During lake water convection current in spring, the micro-weakly alkaline water in bottom arrives surface.4 moonscape water are made to reach minimum pH value about 7.5 after mixing.In the lake water of eutrophication, spring is diatom prolific season, and therefore, the varve in spring is rich in frustule.Along with the arriving in summer, diatom stops breeding, and green alga becomes predominating plankton.With calcite precipitation, form the lake chalk in summer varve, the pH of lake water increases about 10 times and reaches 8.7 or 8.8.Planktonic growth can be suppressed in the winter time, until spring, diatom amount reproduction just started the year circulation of varve deposition again.
This ecology of plankton knowledge composition theoretical basis of the present invention.Really, the growth of diatom and green alga all needs nutrition, but what occupy advantage may be diatom also may be green alga, and the pH of season and lake water is depended in their growth.Diatom only can breed in spring.They can grow in subalkaline lake water.But they uniquely can be survived in the sour water in lake, mountain.Be suppressed in the growth of diatom waters green algae in great numbers, spring also suppresses chlorella growth, and can not grow in sour water green algae.In contaminated lake, to become alkalescence very strong for lake water, even should also be like this during diatom spring in great numbers.This is the key factor causing green alga pollution lake and river.
Can avoid the growth of marine alga when nutrition supplement reduces and cuts off completely, attempt suppresses the way of marine alga and unsuccessful like this.The present invention points out, if introduce a kind of chemical in natural water, its pH is changed, and interrupts the chain reaction of seaweed growth-calcite precipitation-seaweed growth, such as, natural water is become acidity, just can avoid the precipitation of calcite.So also just avoid because green alga photosynthesis is to the extraction of atmospheric carbon dioxide." vicious cycle " is interrupted, and result is the growth that inhibit green alga.
Summary of the invention
In order to overcome the technological deficiency existed in above-mentioned prior art, the object of the present invention is to provide a kind of method that can effectively suppress water body green algae to grow.
In order to realize foregoing invention object, technical scheme of the present invention is as follows:
Suppress the method that water body green algae grows, the method comprises makes water acidifying with carbon dioxide treatment water, makes its pH value reach 4-7, is preferably 6.5-7.
Wherein, the method also comprise by process after waste water processed with carbonic acid gas before draining into lake or river.
Concrete, described in be used for processing water carbonic acid gas be the waste gas that industry produces.
More specifically, the carbonic acid gas being wherein used for processing water results from the combustion processes of fossil oil or lime.
Wherein the water filtration containing dead algae remains after treated acidifying to be come for Urban water supply.
Algae remains of wherein will checkmating leach and burn for producing chemical fertilizer from the water after process.
Compared with prior art, the invention has the beneficial effects as follows:
The carbonic acid gas of carbonic acid gas, preferably industry generation is introduced in water to be processed by the present invention, thus make water acidifying and suppress chlorella growth and promote growth of diatom algae, carbonic acid gas can be that commercial run produced, and this treatment process gas that these industry produce being used for acidified water can play the effect that cleaning water makes purifying air simultaneously.
Embodiment
Below in conjunction with specific embodiment, further detailed description explanation is done to technical scheme of the present invention.
The phenomenon that the viewed very alkaline water green algae of the experiment explanation of seaweed growth and water pH relation is in great numbers.Consider that pH value is 9, it is just not strange that Dianchi Lake becomes " algae soup ", and acid hydrogen ion concentration is 1/100 of natural water.Also do an acid adding to suppress planktonic experiment.Such as, experiment find when add hydrochloric acid make the pH of water become 6.0 or acidity more by force after the growth of Dian Chi lake water green algae stop completely, this experiment confirms the theory that can be suppressed chlorella growth by acidifying natural water.But.For the way not economically feasible suppressing planktonic growth to add hydrochloric acid in big area lake water, and, add like this and also can be harmful to health.
In natural water, growth has two kinds of common algae.Spring temperature lower slightly and pH value is not bery high time growth of diatom algae, diatom is extracted the carbonic acid gas that biogenic produces in eutrophic water and generates protoplasma and siliceous skeleton.The spring sediments in many lakes is all frustule, and the eutrophic water green algae in this fact table season next spring is less competitive than diatom.Because diatom can only breed in spring, when early summer diatom stops growing, green alga starts growth and lake chalk starts to deposit and continues whole summer.Green alga becomes the unique species consuming water Middle nutrition thing.The growth of algae will extract the carbonic acid gas dissolved in water.Isotopic tracing shows that the carbonic acid gas of institute's depletion can be compensated by atmospheric carbon dioxide.The high ph-values of water shows carbonate-ion predominates and therefore causes calcite precipitation.
The present invention proposes a kind of method suppressing algal grown by introducing carbonic acid gas.All the other zone isolation or half in lake region and lake are isolated.Such as fixedly be immersed in this part lake by an inverted cylindrical shell, be pumped in cylindrical shell by the carbonic acid gas from source of supply on the bank, the gas dissolving be then pumped into makes water and gaseous equilibrium become acid.The acidified water of pH6.5-7.5 inhibits the deposition of calcite.Then acidified water pumping out can be processed further.
Only have the algae of a small amount of growth spring in acidified water, acidified water can be pumped in lake.In such acidified lake water, diatom can amount reproduction and green alga is not its rival.In acidified water, nutrition, by diatom depletion, when even arriving to summer, can avoid the growth of green alga.
When summer, green alga started to grow, acidified water contains the remains of dead green alga.Our Chinese Patent Application No. 03123273.6 proposes filtered out by algal debris by the method for the integrating water route recycle system of energy elimination remains and make acidified water infiltrate.In the lake of side, large size city, as the Dian Ci near Kunming, the lake water after filtration can supply urban consumption.
Waste water after urban consumption has the high pH being greater than 8 usually.It is little that the work changing the pH of water treatment plant's processed waste water is done.The present invention proposes: wastewater treatment process also should comprise acidization and be greater than 8 but 6.5-7 with the pH entering the waste water in lake after making process except general procedure.Even if the waste water of such process also can be suppressed in the growth of green alga in summer.
Lake water salification cycles treating processes can a fast step be carried out.When the supply of urban population demand 0.3 hundred cubic meters per day, the speed of circulation of acidified water can be 10,000 cubic meters per day.Method after this manner, even if the lake of 10 billion cubic meters also can be cleaned complete by suppressing chlorella growth in 10 years.
Carbonic acid gas is the modal waste gas produced as coal and oil firing by fossil oil.Another source of carbonic acid gas is that lime burning manufactures cement process.
When present method is for the treatment of contaminated lake, preferably have mandatory rules of law of being forbidden the carbon dioxide from plants of industry generation and factory to be directly discharged into air.The burning of fossil oil and the lime carbonic acid gas produced that burns will collect for the contaminated lake of acidifying.Such regulation can not only make carbonic acid gas for clean contaminated lake, and is transferred to by carbonic acid gas and can also reduce the topsoil because greenhouse gases causes to the method for water acidification and alleviate the Greenhouse effect of the earth.
The method of the suppression water body green algae growth of the present embodiment, the method comprises makes water acidifying with carbon dioxide treatment water, makes its pH value reach 4-7, is preferably 6.5-7.
Wherein, the method also comprise by process after waste water processed with carbonic acid gas before draining into lake or river.
Concrete, described in be used for processing water carbonic acid gas be the waste gas that industry produces.
More specifically, the carbonic acid gas being wherein used for processing water results from the combustion processes of fossil oil or lime.
Wherein the water filtration containing dead algae remains after treated acidifying to be come for Urban water supply.
Algae remains of wherein will checkmating leach and burn for producing chemical fertilizer from the water after process.
In sum, the carbonic acid gas of carbonic acid gas, preferably industry generation is introduced in water to be processed by the present invention, thus make water acidifying and suppress chlorella growth and promote growth of diatom algae, carbonic acid gas can be that commercial run produced, and this treatment process gas that these industry produce being used for acidified water can play the effect that cleaning water makes purifying air simultaneously.
It should be noted that, above preferred embodiment is used for illustrative purposes only, but not limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, done various conversion or modification, all belong to category of the present invention.
Claims (7)
1. the method suppressing water body green algae to grow, is characterized in that, the method comprises makes water acidifying with carbon dioxide treatment water, makes its pH value reach 4-7.
2. a kind of method suppressing water body green algae to grow according to claim 1, is characterized in that, the method also comprises the waste water after by process and processed with carbonic acid gas before draining into lake or river.
3. a kind of method suppressing water body green algae to grow according to claim 1 and 2, is characterized in that, described in be used for processing the carbonic acid gas of water be the waste gas that industry produces.
4. a kind of method suppressing water body green algae to grow according to claim 3, is characterized in that, the carbonic acid gas being wherein used for processing water results from the combustion processes of fossil oil or lime.
5. a kind of method suppressing water body green algae to grow according to claim 1, is characterized in that, wherein the water filtration containing dead algae remains after treated acidifying will be come for Urban water supply.
6. a kind of method suppressing water body green algae to grow according to claim 5, is characterized in that, algae remains of wherein will checkmating leach and burn for producing chemical fertilizer from the water after process.
7. a kind of method suppressing water body green algae to grow according to claim 1, it is characterized in that, described pH value is 6.5-7.
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| CN201510273645.7A CN104909493A (en) | 2015-05-26 | 2015-05-26 | Method used for inhibiting growth of green alga in water bodies |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105621546A (en) * | 2016-02-03 | 2016-06-01 | 安徽乙地生态科技有限公司 | Method for controlling cyanobacterial bloom |
| CN106517403A (en) * | 2016-12-27 | 2017-03-22 | 云南绿A生物产业园有限公司 | Spirulina culture wastewater treatment system and treatment method |
| CN112960849A (en) * | 2021-01-29 | 2021-06-15 | 袁邦皓 | Blue algae-green algae polluted water purification treatment method and equipment thereof |
-
2015
- 2015-05-26 CN CN201510273645.7A patent/CN104909493A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105621546A (en) * | 2016-02-03 | 2016-06-01 | 安徽乙地生态科技有限公司 | Method for controlling cyanobacterial bloom |
| CN106517403A (en) * | 2016-12-27 | 2017-03-22 | 云南绿A生物产业园有限公司 | Spirulina culture wastewater treatment system and treatment method |
| CN112960849A (en) * | 2021-01-29 | 2021-06-15 | 袁邦皓 | Blue algae-green algae polluted water purification treatment method and equipment thereof |
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Application publication date: 20150916 |