CN101381140A - Blue algae scavenger using light mineral as carrier and preparation method thereof - Google Patents
Blue algae scavenger using light mineral as carrier and preparation method thereof Download PDFInfo
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Abstract
The invention belongs to the field of water pollution treatment, in particular to a water body algae scavenger and a preparation method thereof. A blue algae scavenger taking light mineral as a carrier is characterized in that the blue algae scavenger is prepared by a lanthanum nitrate solution, a sodium hydroxide solution and lumpish porous light mineral raw materials, wherein the addition amount of the sodium hydroxide solution is 1 to 5 percent of the volume of the lanthanum nitrate solution, and the addition amount of the lumpish porous light mineral is 5 to 10 percent of the total mass of the lanthanum nitrate solution and the sodium hydroxide solution; the mass concentration of the lanthanum nitrate solution is between 0.2 and 0.5 percent, and the mass concentration of the sodium hydroxide solution is between 5 and 10 percent; the diameter of the lumpish porous light mineral is between 0.1 and 3 centimeters; and the lumpish porous light mineral is one type or mixture of more than two types among floatstone, perlite and expanded perlite, and the proportion is random when more than two types are mixed. The blue algae scavenger prepared by the method has the advantages of good blue algae removal effect, quickness in taking effect, low cost and no secondary pollution.
Description
Technical field
The invention belongs to the water pollution control field, be specifically related to a kind of agent for removing algae from aquatic system and preparation method thereof.
Background technology
Down short at the whip of regional economy fast development, the excessive exploitation of water resources and to the ignorance of environment protection has made China's geographic water surrounding of major part worsen day by day, and body eutrophication is serious.The eutrophication of water body causes the excessive multiplication of algae in the water body again, particularly causes the outburst of planktonic algae (mainly be blue-green algae belong to) and forms wawter bloom.In recent years, in water bodys such as the Dian Chi of China, Taihu Lake, Chaohu, Erhai, the life that takes place frequently of blue algae bloom event frequency.A large amount of wawter blooms not only influences the water landscape effect, but also can produce the algae toxin, brings serious threat for aquatic ecosystem, public health security.All there is report to take place in states such as the U.S., Japan, Australia, Brazil because of the algae toxin causes the incident that fish, domestic animal and people's death by poisoning are died.And detect algae toxin peak concentration value in China Dian Chi and Taihu Lake is that World Health Organization's regulation is drunk more than thousand times of algae content of toxins (being no more than 1 μ g/L), serious harm biological existence and HUMAN HEALTH.
The improvement of blue-green alga bloom at present mainly contains three kinds: physics method, chemical method and biological process.
Measures such as the physics method is mainly taked to salvage, adsorbs, precipitates, dammed, dredging, dilution and sewage separation.At present the physics method is to use to such an extent that at most also be effective means.Common mode has the mechanical removal method, all design some machineries as patent CN200720128782.2, CN200720039592.3, CN200720071907.2, CN200720040542.7, CN200710191927.8 etc. and salvaged devices of blue-green algaes, can more effective removing water-surface blue-green algae; Also useful high energy physics method is administered, a kind of method for the treatment of blue algae in pulse electric field has been proposed as patent CN02134046.3, patent CN200410051559.3 has designed the method and system of utilizing ultraviolet light irradiation to suppress blue algae growth in the water, and patent CN03100009.6 utilizes ultrasonic wave to suppress algal grown; Also useful porous material or mineral material physical adsorption, as the porous ceramic grain among the patent CN01108404.9, the gypsum among the patent CN200410050911.1, Attapulgite etc., other mineral material absorption such as also useful zeolite, montmorillonite is administered.The physics method is obvious except that blue-green algae has effect, and instant effect does not have newly and pollutes, but has the high problem of cost yet.
Chemical method is the breeding of controlling algae in the water by screening and synthetic chemistry medicament (general designation algicide).Its mechanism reaches the purpose of killing algae by the eubolism of metal ion inhibition algae on the one hand, then reaches the purpose of removal algae on the other hand by the throwing out sedimentation algae of metal ion.Patent has 98117764.6,200710025991.9 usefulness hydrogen peroxide to kill algae, patent CN200710132808.5 SiO at present
2, Al
2(SO
4)
3And Fe
2(SO
4)
3Mixture is administered, patent CN200410067260.7 then goes algae with the water purification agent of wilkinite, polymerize aluminum chloride, three kinds of composite compositions of flocculation agent of cationic-type polyacrylamide, and patent CN02155284.3, CN200510049651, CN01134528.4, CN200610040213.2 have mentioned each metal ion species algicide.Though chemical method also produces effect, ubiquity instability, secondary pollution problems.
Biological process is mainly from the angle of ecology, concerns by interbiotic nutrient competition and food chain and controls blue-green alga bloom.The main at present methods such as microbial control, algophagous, waterplant inhibition that adopt.The patent of this respect has CN01108743.9, CN200710029516.9, CN200710066321.1, CN200710059556.8, CN200410012928.8, CN200510019644.6 etc.Biological process has advantages such as economy, effect continue, but also exist take effect slow, to shortcomings such as the human body potential hazard are uncertain.
In addition some patent also extractives logos, chemical method add biological process comprehensive regulation blue-green algae, as patent CN200410012935.8.
Because blue-green alga bloom breaks out in each waters such as China Taihu Lake, Dian Chi, Chaohu in recent years every year, caused country and local great attention, scientific and technological circle more patent and research article have occurred also to this number of research projects.In general, control the most feasible method of blue-green alga bloom at present and still adopt the comprehensive regulation of natural mineral matrix material, advantage such as instant effect, cost are low, simple to operate, non-secondary pollution that it has also is the research direction that state key supports.
It is the loose porous shape mineral of a class of representative that light porous mineral are meant with perlite (comprising pearlstone), float stone, and their proportion is little, and specific surface area is big, high adsorption capacity, and chemical property is stable, and nontoxic, is very excellent environment remediation material.
Summary of the invention
It is the Cyanobacterial scavenger and preparation method thereof of carrier with the light mineral that the object of the invention is to provide a kind of, and the Cyanobacterial scavenger of this method preparation is removed effective, the instant effect of blue-green algae.
To achieve these goals, technical scheme of the present invention is: a kind of is the Cyanobacterial scavenger of carrier with the light mineral, it is characterized in that it is prepared from by lanthanum nitrate hexahydrate, sodium hydroxide solution and block light porous raw mineral materials, the add-on of sodium hydroxide solution is 1～5% of a lanthanum nitrate hexahydrate volume, and the add-on of block light porous mineral is 5～10% of lanthanum nitrate hexahydrate and sodium hydroxide solution total masses; Wherein, the mass concentration of lanthanum nitrate hexahydrate is 0.2～0.5%, and the mass concentration of sodium hydroxide solution is 5～10%; The diameter of block light porous mineral is 0.1～3cm; Light porous mineral are any one or any mixing (containing any two kinds) more than two kinds in float stone, perlite, the pearlstone, and any is any proportioning when mixing more than two kinds.
Above-mentioned a kind of be the preparation method of the Cyanobacterial scavenger of carrier with the light mineral, it is characterized in that it comprises the steps:
1) light porous mineral being broken into the bulk that diameter is 0.1～3cm, is sodium hydroxide solution stirring and washing 1.5～2.5h of 8～12% with mass concentration, and washing is to neutral then, oven dry, block light porous mineral, standby;
2) lanthanum nitrate being added water, to be made into mass concentration be 0.2～0.5% lanthanum nitrate hexahydrate, and the preparation mass concentration is 5～10% sodium hydroxide solution; The add-on that by mass concentration is 5～10% sodium hydroxide solution is that mass concentration is 1～5% of 0.2～0.5% a lanthanum nitrate hexahydrate volume, choose lanthanum nitrate hexahydrate, sodium hydroxide solution, add-on by the light porous mineral of bulk is 5～10% of lanthanum nitrate hexahydrate and a sodium hydroxide solution total mass, choose block light porous mineral, standby;
Under agitation, dropping sodium solution in lanthanum nitrate hexahydrate, flocks appears and after, continue to stir 25～35min, the flocks mixing solutions;
3) in the flocks mixing solutions, add block light porous mineral, stir 25～35min after, filter, (90～100 ℃ of bakings 10～15h) down, promptly obtaining with the light mineral is the Cyanobacterial scavenger of carrier with the upper strata particulate matter oven dry that obtains.
The invention has the beneficial effects as follows:
1, light mineral is a natural porous material, and proportion is little, and specific surface area is big, can bubble through the water column, and has the good adsorption performance, and nontoxic, low price.With the light mineral is solid support material, the pollutent in not only can the adsorption removal water body, and be convenient to recycle and reuse, not only economy but also environmental protection.
2, the present invention is a solid support material with light porous mineral, adopts the hydroxide particle of chemical precipitation method at its area load one deck lanthanum, obtains a kind of Cyanobacterial scavenger after oven dry is handled.The oxyhydroxide of the lanthanum of light mineral area load has good throwing out to blue-green algae, and flocculation rate is fast, can make the blue-green algae rapid precipitation to the bottom.It has good inhibition effect to blue algae growth simultaneously, can make sedimentary blue-green algae comparatively fast dead.And the lanthanum stable in properties, to the person poultry harmless.
Cyanobacterial scavenger of the present invention is dropped in the polluted waters, and it can make the rapid flocculation sediment of algae such as blue-green algae in the water body to bottom, natural death; Also other impurity in the water body also coprecipitation is got off simultaneously, water quality is clarified fast.It is remarkable that the present invention removes the blue-green algae effect, and instant effect, and cost is low, and non-secondary pollution improves water quality simultaneously, very helps suffering the comprehensive regulation of blue-green alga bloom polluted waters.
3, technology of the present invention is simple, and production cost is low, and is easy to operate; Adaptive faculty is strong, can be widely applied to the various waters that polluted by blue-green algae.The puzzlement that polluted by blue-green alga bloom in the many lakes of China at present has a strong impact on the Human's production life, and the present invention pollutes, improves water quality and have good effect for administering blue-green algae, has a extensive future, and meaning is very great.
Embodiment
In order to understand the present invention better, further illustrate content of the present invention below in conjunction with example, but the present invention not only is confined to the following examples; Specific embodiment and not meaning that limits the scope of the invention.
Embodiment 1:
A kind of is the Cyanobacterial scavenger of carrier with the light mineral, it is formed by lanthanum nitrate hexahydrate, sodium hydroxide solution and block pearlstone feedstock production, the add-on of sodium hydroxide solution is 1% of a lanthanum nitrate hexahydrate volume, and the add-on of block pearlstone is 5% of lanthanum nitrate hexahydrate and a sodium hydroxide solution total mass; Wherein, the mass concentration of lanthanum nitrate hexahydrate is 0.2%, and the mass concentration of sodium hydroxide solution is 5%; The diameter of block pearlstone is 0.5cm.
Above-mentioned a kind of be the preparation method of the Cyanobacterial scavenger of carrier with the light mineral, it comprises the steps:
1) pearlstone being broken into the bulk that diameter is 0.5cm, is 8% sodium hydroxide solution stirring and washing 2.5h with mass concentration, and washing is to neutral then, oven dry, block pearlstone, standby;
2) lanthanum nitrate being added water, to be made into mass concentration be 0.2% lanthanum nitrate hexahydrate, and water preparation mass concentration is 5% sodium hydroxide solution; The add-on that by mass concentration is 5% sodium hydroxide solution is that mass concentration is 1% of 0.2% a lanthanum nitrate hexahydrate volume, choose lanthanum nitrate hexahydrate, sodium hydroxide solution, add-on by block pearlstone is 5% of lanthanum nitrate hexahydrate and a sodium hydroxide solution total mass, choose block pearlstone, standby;
Under magnetic agitation, dropping sodium solution in lanthanum nitrate hexahydrate, flocks appears and after, continue to stir 25min, the flocks mixing solutions;
3) in the flocks mixing solutions, add block pearlstone, behind the stirring 25min, filtering separation, with the upper strata particulate matter oven dry (90 ℃ are dried by the fire 15h down) that filtration obtains, promptly obtaining with the light mineral is the Cyanobacterial scavenger of carrier.
Embodiment 2:
A kind of is the Cyanobacterial scavenger of carrier with the light mineral, it is formed by lanthanum nitrate hexahydrate, sodium hydroxide solution and pumice in lumps feedstock production, the add-on of sodium hydroxide solution is 5% of a lanthanum nitrate hexahydrate volume, and the add-on of pumice in lumps is 10% of lanthanum nitrate hexahydrate and a sodium hydroxide solution total mass; Wherein, the mass concentration of lanthanum nitrate hexahydrate is 0.5%, and the mass concentration of sodium hydroxide solution is 10%; The diameter of pumice in lumps is 3cm.
Above-mentioned a kind of be the preparation method of the Cyanobacterial scavenger of carrier with the light mineral, it comprises the steps:
1) float stone being broken into the bulk that diameter is 3cm, is 12% sodium hydroxide solution stirring and washing 1.5h with mass concentration, and washing is to neutral then, oven dry, pumice in lumps, standby;
2) lanthanum nitrate being added water, to be made into mass concentration be 0.5% lanthanum nitrate hexahydrate, and water preparation mass concentration is 10% sodium hydroxide solution; The add-on that by mass concentration is 10% sodium hydroxide solution is that mass concentration is 5% of 0.5% a lanthanum nitrate hexahydrate volume, choose lanthanum nitrate hexahydrate, sodium hydroxide solution, add-on by pumice in lumps is 10% of lanthanum nitrate hexahydrate and a sodium hydroxide solution total mass, choose pumice in lumps, standby;
Under magnetic agitation, dropping sodium solution in lanthanum nitrate hexahydrate, flocks appears and after, continue to stir 35min, the flocks mixing solutions;
3) add pumice in lumps in the flocks mixing solutions, behind the stirring 35min, filter, with the upper strata particulate matter oven dry (100 ℃ are dried by the fire 10h down) that filtration obtains, promptly obtaining with the light mineral is the Cyanobacterial scavenger of carrier.
Embodiment 3:
A kind of is the Cyanobacterial scavenger of carrier with the light mineral, it is formed by lanthanum nitrate hexahydrate, sodium hydroxide solution and block perlite feedstock production, the add-on of sodium hydroxide solution is 4% of a lanthanum nitrate hexahydrate volume, and block perlitic add-on is 8% of lanthanum nitrate hexahydrate and a sodium hydroxide solution total mass; Wherein, the mass concentration of lanthanum nitrate hexahydrate is 0.4%, and the mass concentration of sodium hydroxide solution is 8%; Block perlitic diameter is 1cm.
Above-mentioned a kind of be the preparation method of the Cyanobacterial scavenger of carrier with the light mineral, it comprises the steps:
1) perlite being broken into the bulk that diameter is 1cm, is 10% sodium hydroxide solution stirring and washing 2.0h with mass concentration, and washing is to neutral then, oven dry, block perlite, standby;
2) lanthanum nitrate being added water, to be made into mass concentration be 0.4% lanthanum nitrate hexahydrate, and water preparation mass concentration is 8% sodium hydroxide solution; The add-on that by mass concentration is 8% sodium hydroxide solution is that mass concentration is 4% of 0.4% a lanthanum nitrate hexahydrate volume, choose lanthanum nitrate hexahydrate, sodium hydroxide solution, by the perlitic add-on of bulk is 8% of lanthanum nitrate hexahydrate and sodium hydroxide solution total mass, choose block perlite, standby;
Under magnetic agitation, dropping sodium solution in lanthanum nitrate hexahydrate, flocks appears and after, continue to stir 30min, the flocks mixing solutions;
3) in the flocks mixing solutions, add block perlite, behind the stirring 30min, filtering separation, with the upper strata particulate matter oven dry (95 ℃ are dried by the fire 12h down) that obtains, promptly obtaining with the light mineral is the Cyanobacterial scavenger of carrier.
Embodiment 4:
A kind of is the Cyanobacterial scavenger of carrier with the light mineral, it is prepared from by lanthanum nitrate hexahydrate, sodium hydroxide solution and block light porous raw mineral materials, the add-on of sodium hydroxide solution is 2% of a lanthanum nitrate hexahydrate volume, and the add-on of block light porous mineral is 9% of lanthanum nitrate hexahydrate and sodium hydroxide solution total masses; Wherein, the mass concentration of lanthanum nitrate hexahydrate is 0.3%, and the mass concentration of sodium hydroxide solution is 9%; The diameter of block light porous mineral is 0.1cm; Light porous mineral are float stone and perlite, and float stone and perlitic quality respectively account for 1/2.
Above-mentioned a kind of be the preparation method of the Cyanobacterial scavenger of carrier with the light mineral, it comprises the steps:
1) respectively accounting for 1/2 by float stone, perlitic quality, float stone, perlite are broken into the bulk that diameter is 0.1cm respectively, is 10% sodium hydroxide solution stirring and washing 2.0h with mass concentration, washing is to neutral then, oven dry gets block light porous mineral, and is standby;
2) lanthanum nitrate being added water, to be made into mass concentration be 0.3% lanthanum nitrate hexahydrate, and water preparation mass concentration is 9% sodium hydroxide solution; The add-on that by mass concentration is 9% sodium hydroxide solution is that mass concentration is 2% of 0.3% a lanthanum nitrate hexahydrate volume, choose lanthanum nitrate hexahydrate, sodium hydroxide solution, add-on by the light porous mineral of bulk is 9% of lanthanum nitrate hexahydrate and a sodium hydroxide solution total mass, choose block light porous mineral, standby;
Under magnetic agitation, dropping sodium solution in lanthanum nitrate hexahydrate, flocks appears and after, continue to stir 30min, the flocks mixing solutions;
3) add block light porous mineral in the flocks mixing solutions, behind the stirring 30min, filter, with the upper strata particulate matter oven dry (baking 10h under 90 ℃) that filtration obtains, promptly obtaining with the light mineral is the Cyanobacterial scavenger of carrier.
The effect test example:
Get the Cyanobacterial scavenger 0.5g that obtains among the embodiment 3, join the lake water that 250ml has a large amount of blue-green algaes, after stirring, static depositing.Get supernatant liquid every 20min and detect detected result such as table 1:
Table 1
Can see that with the blue-green algae lake water that the present invention handled, the chlorophyll clearance is just up to 95.47% behind the 20min, turbidity has descended 83.25%, and algae is counted clearance also up to 90.19%, and upper strata lake water obviously clarifies, and visual inspection does not have blue-green algae; Behind the 60min, chlorophyll clearance 98.16%, turbidity have descended 89.01%, and algae is counted clearance up to 91.63%, and upper strata lake water is clear almost, the visual inspection inclusion-free.This shows that it is remarkable that the Cyanobacterial scavenger of the present invention's preparation is removed the blue-green algae effect, instant effect.
Claims (3)
1. one kind is the Cyanobacterial scavenger of carrier with the light mineral, it is characterized in that it is prepared from by lanthanum nitrate hexahydrate, sodium hydroxide solution and block light porous raw mineral materials, the add-on of sodium hydroxide solution is 1～5% of a lanthanum nitrate hexahydrate volume, and the add-on of block light porous mineral is 5～10% of lanthanum nitrate hexahydrate and sodium hydroxide solution total masses; Wherein, the mass concentration of lanthanum nitrate hexahydrate is 0.2～0.5%, and the mass concentration of sodium hydroxide solution is 5～10%; The diameter of block light porous mineral is 0.1～3cm; Light porous mineral are any one or any mixing more than two kinds in float stone, perlite, the pearlstone, and any is any proportioning when mixing more than two kinds.
2. as claimed in claim 1 a kind of be the preparation method of the Cyanobacterial scavenger of carrier with the light mineral, it is characterized in that it comprises the steps:
1) light porous mineral being broken into the bulk that diameter is 0.1～3cm, is sodium hydroxide solution stirring and washing 1.5～2.5h of 8～12% with mass concentration, and washing is to neutral then, oven dry, block light porous mineral, standby;
2) lanthanum nitrate being added water, to be made into mass concentration be 0.2～0.5% lanthanum nitrate hexahydrate, and the preparation mass concentration is 5～10% sodium hydroxide solution; The add-on that by mass concentration is 5～10% sodium hydroxide solution is that mass concentration is 1～5% of 0.2～0.5% a lanthanum nitrate hexahydrate volume, choose lanthanum nitrate hexahydrate, sodium hydroxide solution, add-on by the light porous mineral of bulk is 5～10% of lanthanum nitrate hexahydrate and a sodium hydroxide solution total mass, choose block light porous mineral, standby;
Under agitation, dropping sodium solution in lanthanum nitrate hexahydrate, flocks appears and after, continue to stir 25～35min, the flocks mixing solutions;
3) add block light porous mineral in the flocks mixing solutions, behind stirring 25～35min, filter, with the upper strata particulate matter oven dry that obtains, promptly obtaining with the light mineral is the Cyanobacterial scavenger of carrier.
3. according to claim 2 a kind of be the preparation method of the Cyanobacterial scavenger of carrier with the light mineral, it is characterized in that described oven dry is: 90～100 ℃ of following baking 10～15h.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101734754B (en) * | 2009-12-25 | 2011-12-28 | 中国地质大学（武汉） | Cyanobacterial scavenger with rare earth complex loaded on mineral material and preparing method thereof |
| CN112125356A (en) * | 2020-09-02 | 2020-12-25 | 浙江万里学院 | Preparation method of light composite algaecide with dephosphorization effect and floating type algae removal method on light composite algaecide |
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2008
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101734754B (en) * | 2009-12-25 | 2011-12-28 | 中国地质大学（武汉） | Cyanobacterial scavenger with rare earth complex loaded on mineral material and preparing method thereof |
| CN112125356A (en) * | 2020-09-02 | 2020-12-25 | 浙江万里学院 | Preparation method of light composite algaecide with dephosphorization effect and floating type algae removal method on light composite algaecide |
| CN112125356B (en) * | 2020-09-02 | 2022-11-01 | 浙江万里学院 | Preparation method of light composite algaecide with dephosphorization effect and floating type algae removal method on light composite algaecide |
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