CN101371665B - Blue algae scavenging agent using expanded perlite as carrier and preparation method thereof - Google Patents
Blue algae scavenging agent using expanded perlite as carrier and preparation method thereof Download PDFInfo
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- CN101371665B CN101371665B CN2008101972503A CN200810197250A CN101371665B CN 101371665 B CN101371665 B CN 101371665B CN 2008101972503 A CN2008101972503 A CN 2008101972503A CN 200810197250 A CN200810197250 A CN 200810197250A CN 101371665 B CN101371665 B CN 101371665B
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- expanded perlite
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Abstract
The invention belongs to the field of water pollution control, in particular relates to a scavenging agent for algae in water and a preparation method thereof. The scavenging agent for blue algae, which adopts expanded perlite as a carrier, is characterized in that the agent is prepared by the raw materials of cerium nitrate solution, sodium hydroxide solution and granular expanded perlite, the volume of the sodium hydroxide solution added is 1-5% of the volume of the cerium nitrate solution, and the mass of the granular expanded perlite added is 1-5% of the total mass of the cerium nitrate solution and the sodium hydroxide solution, wherein, the mass concentration of the cerium nitrate solution is 0.2-0.5%, and the mass concentration of the sodium hydroxide solution is 5-10%; and the diameter of the granular expanded perlite is 0.1-0.5cm. The scavenging agent for blue algae, prepared by the method, has the advantages of favorable and fast effect on getting rid of the blue algae, 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 resource and to the ignorance of environmental protection has made the most of regional water environment of China 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 Cmax 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 health.The improvement of blue-green alga bloom at present mainly contains three kinds: physics method, chemical method and bioanalysis.
Perlite is a kind of acid nature of glass slag with perlitic texture, belongs to acid magma aluminium supersaturation series.This class magma is big because of viscosity, and including a large amount of gas-liquid compositions in it can't overflow, and ejection contacts with cold air behind the face of land, and the lava fluid temperature (F.T.) descends rapidly, sharply solidifies and forms the vitreum perlite.
Perlite mainly is made up of material from acidic volcanic glass, and the 95%th, glassy phase, wherein 65%～75% is amorphous quartz, 11%～14% is aluminium oxide.Alkali metal oxide is higher, can reach 8%～9%, and the iron coloring oxide is less.
The general drying of perlite ore, fragmentation, grinding, screening, and roasting in 1200～1380 ℃ high temperature gas flow rapidly, perlite is heated suddenly to heat up and reaches softening point temperature, water vapor in the nature of glass structure, produce very big pressure, the nature of glass volume of thickness is expanded rapidly, promptly become expanded perlite.Expanded perlite is generally white granular, have light weight, insulation, sound-absorbing, heat insulation, do not fire, anti-agingly, corrosion-resistant, anti-damage by worms, people and animals are not had characteristics such as harm, be widely used in building thermal insulation material; The expanded perlite granule structure is cellular simultaneously, thereby has good adsorption, can be used for absorption, filtration and carrier material.
Perlite is mainly used in the heat-insulation and heat-preservation material at present, and the pertinent literature patent report also focuses mostly on aspect perlitic Thermal Properties, and is also fewer about the patent of perlite absorption property aspect.Patent 91102939.7 has been introduced the carrier that perlite is done agricultural fertilizer; It is the carrier absorbing carbon dioxide that patent 92108508.7 has been introduced expanded perlite; Patent 95105974.2 has been invented composite pearlstone filter aid for beer.But yet there are no expanded perlite and be used for the relevant report that blue-green algae is administered.
Summary of the invention
It is the Cyanobacterial scavenger and preparation method thereof of carrier with the expanded perlite 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 expanded perlite, it is characterized in that it is formed by cerous nitrate solution, sodium hydroxide solution and graininess expanded perlite feedstock production, the addition of sodium hydroxide solution is 1～5% of a cerous nitrate solution volume, and the addition of graininess expanded perlite is 1～5% of cerous nitrate solution and a sodium hydroxide solution gross mass; Wherein, the mass concentration of cerous nitrate solution is 0.2～0.5%, and the mass concentration of sodium hydroxide solution is 5～10%; The diameter of graininess expanded perlite is 0.1～0.5cm.
Above-mentioned a kind of be the preparation method of the Cyanobacterial scavenger of carrier with the expanded perlite, it is characterized in that it comprises the steps:
1) expanded perlite is broken into the graininess that diameter is 0.1～0.5cm, gets the graininess expanded perlite, standby;
2) the preparation mass concentration is 0.2～0.5% cerous nitrate solution, and the preparation mass concentration is 5～10% sodium hydroxide solution, and is standby; The addition that by mass concentration is 5～10% sodium hydroxide solution is that mass concentration is 1～5% of 0.2～0.5% a cerous nitrate solution volume, choose cerous nitrate solution, sodium hydroxide solution, addition by the graininess expanded perlite is 1～5% of cerous nitrate solution and a sodium hydroxide solution gross mass, chooses the graininess expanded perlite;
Under agitation, dropping sodium solution in cerous nitrate solution, flocculent deposit appears and after, continue to stir 25～35min, the flocculent deposit mixed solution;
3) in the flocculent deposit mixed solution, add the graininess expanded perlite, stir 25～35min after, filter, (90～100 ℃ of bakings 5～7h) down, obtaining with the expanded perlite is the Cyanobacterial scavenger of carrier with the upper strata particle oven dry that obtains.
The invention has the beneficial effects as follows:
1, expanded perlite is natural loose porous material, and chemical property is stable, and is nontoxic, low price, and porosity height, and specific surface area is big, has the good adsorption performance, preferably the algae in the adsorption removal water body and other impurity.
2, the present invention is carrier material with the expanded perlite, adopts the hydroxide particle of infusion process at its area load one deck cerium, promptly obtains a kind of Cyanobacterial scavenger after oven dry is handled.The hydroxide of the cerium of expanded perlite area load has good flocculation 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 the blue-green algae of precipitation comparatively fast dead.And the cerium stable in properties, to the person poultry harmless.
Cyanobacterial scavenger of the present invention is dropped in the polluted water region, can make the rapid flocculation sediment of algae such as blue-green algae in the water body to bottom, natural death.And scavenger itself is still bubbled through the water column, recyclable recycling.It is remarkable that the present invention removes the blue-green algae effect, and instant effect, and non-secondary pollution improves water quality simultaneously, very helps suffering the comprehensive regulation of blue-green alga bloom polluted water region.
3, technology of the present invention is simple, and production cost is low, and is easy to operate, and adaptive capacity is strong, can be 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 expanded perlite, it is formed by cerous nitrate solution, sodium hydroxide solution and graininess expanded perlite feedstock production, the addition of sodium hydroxide solution is 1% of a cerous nitrate solution volume, and the addition of graininess expanded perlite is 1% of cerous nitrate solution and a sodium hydroxide solution gross mass; Wherein, the mass concentration of cerous nitrate solution is 0.2%, and the mass concentration of sodium hydroxide solution is 5%; The diameter of graininess expanded perlite is 0.1cm.
Above-mentioned a kind of be the preparation method of the Cyanobacterial scavenger of carrier with the expanded perlite, it comprises the steps:
1) expanded perlite is broken into the graininess that diameter is 0.1cm, gets the graininess expanded perlite, standby;
2) water preparation mass concentration is 0.2% cerous nitrate solution, and water preparation mass concentration is 5% sodium hydroxide solution, and is standby; The addition that by mass concentration is 5% sodium hydroxide solution is that mass concentration is 1% of 0.2% a cerous nitrate solution volume, choose cerous nitrate solution, sodium hydroxide solution, addition by the graininess expanded perlite is 1% of cerous nitrate solution and a sodium hydroxide solution gross mass, chooses the graininess expanded perlite;
Under magnetic agitation, dropping sodium solution in cerous nitrate solution, flocculent deposit appears and after, continue to stir 25min, the flocculent deposit mixed solution;
3) in the flocculent deposit mixed solution, add the graininess expanded perlite, behind the stirring 25min, isolated by filtration, with the upper strata particle oven dry (90 ℃ are dried by the fire 7h down) that obtains, obtaining with the expanded perlite is the Cyanobacterial scavenger of carrier.
Embodiment 2:
A kind of is the Cyanobacterial scavenger of carrier with the expanded perlite, it is formed by cerous nitrate solution, sodium hydroxide solution and graininess expanded perlite feedstock production, the addition of sodium hydroxide solution is 5% of a cerous nitrate solution volume, and the addition of graininess expanded perlite is 5% of cerous nitrate solution and a sodium hydroxide solution gross mass; Wherein, the mass concentration of cerous nitrate solution is 0.5%, and the mass concentration of sodium hydroxide solution is 10%; The diameter of graininess expanded perlite is 0.5cm.
Above-mentioned a kind of be the preparation method of the Cyanobacterial scavenger of carrier with the expanded perlite, it comprises the steps:
1) expanded perlite is broken into the graininess that diameter is 0.5cm, gets the graininess expanded perlite, standby;
2) water preparation mass concentration is 0.5% cerous nitrate solution, and water preparation mass concentration is 10% sodium hydroxide solution, and is standby; The addition that by mass concentration is 10% sodium hydroxide solution is that mass concentration is 5% of 0.5% a cerous nitrate solution volume, choose cerous nitrate solution, sodium hydroxide solution, addition by the graininess expanded perlite is 5% of cerous nitrate solution and a sodium hydroxide solution gross mass, chooses the graininess expanded perlite;
Under magnetic agitation, dropping sodium solution in cerous nitrate solution, flocculent deposit appears and after, continue to stir 35min, the flocculent deposit mixed solution;
3) in the flocculent deposit mixed solution, add the graininess expanded perlite, behind the stirring 35min, isolated by filtration, with the upper strata particle oven dry (100 ℃ are dried by the fire 5h down) that obtains, obtaining with the expanded perlite is the Cyanobacterial scavenger of carrier.
Embodiment 3:
A kind of is the Cyanobacterial scavenger of carrier with the expanded perlite, it is formed by cerous nitrate solution, sodium hydroxide solution and graininess expanded perlite feedstock production, the addition of sodium hydroxide solution is 3% of a cerous nitrate solution volume, and the addition of graininess expanded perlite is 3% of cerous nitrate solution and a sodium hydroxide solution gross mass; Wherein, the mass concentration of cerous nitrate solution is 0.3%, and the mass concentration of sodium hydroxide solution is 8%; The diameter of graininess expanded perlite is 0.3cm.
Above-mentioned a kind of be the preparation method of the Cyanobacterial scavenger of carrier with the expanded perlite, it comprises the steps:
1) expanded perlite is broken into the graininess that diameter is 0.3cm, gets the graininess expanded perlite, standby;
2) water preparation mass concentration is 0.3% cerous nitrate solution, and water preparation mass concentration is 8% sodium hydroxide solution, and is standby; The addition that by mass concentration is 8% sodium hydroxide solution is that mass concentration is 3% of 0.3% a cerous nitrate solution volume, choose cerous nitrate solution, sodium hydroxide solution, addition by the graininess expanded perlite is 3% of cerous nitrate solution and a sodium hydroxide solution gross mass, chooses the graininess expanded perlite;
Under magnetic agitation, dropping sodium solution in cerous nitrate solution, flocculent deposit appears and after, continue to stir 30min, the flocculent deposit mixed solution;
3) in the flocculent deposit mixed solution, add the graininess expanded perlite, behind the stirring 30min, isolated by filtration, with the upper strata particle oven dry (95 ℃ are dried by the fire 6h down) that obtains, obtaining with the expanded perlite is the Cyanobacterial scavenger (sample) 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 testing 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 96.89% behind the 20min, turbidity has descended 83.25%, and algae is counted clearance 89.26%, and upper strata lake water obviously clarifies, and perusal does not have blue-green algae; Behind the 60min, chlorophyll clearance 97.74%, turbidity have descended 87.96%, and algae is counted clearance up to 91.79%, and upper strata lake water is clear almost, the perusal free from admixture.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 expanded perlite, it is characterized in that it is formed by cerous nitrate solution, sodium hydroxide solution and graininess expanded perlite feedstock production, the addition of sodium hydroxide solution is 1～5% of a cerous nitrate solution volume, and the addition of graininess expanded perlite is 1～5% of cerous nitrate solution and a sodium hydroxide solution gross mass; Wherein, the mass concentration of cerous nitrate solution is 0.2～0.5%, and the mass concentration of sodium hydroxide solution is 5～10%; The diameter of graininess expanded perlite is 0.1～0.5cm.
2. as claimed in claim 1 a kind of be the preparation method of the Cyanobacterial scavenger of carrier with the expanded perlite, it is characterized in that it comprises the steps:
1) expanded perlite is broken into the graininess that diameter is 0.1～0.5cm, gets the graininess expanded perlite, standby;
2) the preparation mass concentration is 0.2～0.5% cerous nitrate solution, and the preparation mass concentration is 5～10% sodium hydroxide solution, and is standby; The addition that by mass concentration is 5～10% sodium hydroxide solution is that mass concentration is 1～5% of 0.2～0.5% a cerous nitrate solution volume, choose cerous nitrate solution, sodium hydroxide solution, addition by the graininess expanded perlite is 1～5% of cerous nitrate solution and a sodium hydroxide solution gross mass, chooses the graininess expanded perlite;
Under agitation, dropping sodium solution in cerous nitrate solution, flocculent deposit appears and after, continue to stir 25～35min, the flocculent deposit mixed solution;
3) add the graininess expanded perlite in the flocculent deposit mixed solution, behind stirring 25～35min, filter, with the upper strata particle oven dry that obtains, obtaining with the expanded perlite 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 expanded perlite, it is characterized in that described oven dry is: 90～100 ℃ of following baking 10～15h.
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| CN102219275B (en) * | 2011-04-29 | 2012-11-21 | 中国地质大学（武汉） | Blue algae scavenger using expanded perlite as carrier and capable of floating on water |
| CN104604948A (en) * | 2014-12-26 | 2015-05-13 | 安徽省中日农业环保科技有限公司 | Blue algae treating agent prepared from kelp and preparation method thereof |
| CN105347451B (en) * | 2015-12-16 | 2018-10-09 | 北京中设水处理有限公司 | A kind of inorganic nano flocculant preparation method of attapulgite loaded metal ion |
| CN113519525B (en) * | 2021-07-20 | 2023-02-03 | 东北师范大学 | Application of furanone compounds in prevention and treatment of cyanobacterial bloom |
Citations (3)
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| JP3612659B2 (en) * | 1997-04-16 | 2005-01-19 | 東京都 | Method for producing water-absorbing material by modification of humic acid |
| TW200730440A (en) * | 2006-02-07 | 2007-08-16 | Univ Nat Taiwan | Cerium-based oxide fiber and its fabricating method |
| WO2008021256A2 (en) * | 2006-08-11 | 2008-02-21 | Aqua Resources Corporation | Nanoplatelet metal hydroxides and methods of preparing same |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3612659B2 (en) * | 1997-04-16 | 2005-01-19 | 東京都 | Method for producing water-absorbing material by modification of humic acid |
| TW200730440A (en) * | 2006-02-07 | 2007-08-16 | Univ Nat Taiwan | Cerium-based oxide fiber and its fabricating method |
| WO2008021256A2 (en) * | 2006-08-11 | 2008-02-21 | Aqua Resources Corporation | Nanoplatelet metal hydroxides and methods of preparing same |
Non-Patent Citations (1)
| Title |
|---|
| 崔希文等.杂化聚丙烯酰胺的合成与性能研究.《山西化工》.2007,(第06期), * |
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