CN110894090A - Algicide and application thereof - Google Patents
Algicide and application thereof Download PDFInfo
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- CN110894090A CN110894090A CN201811067862.0A CN201811067862A CN110894090A CN 110894090 A CN110894090 A CN 110894090A CN 201811067862 A CN201811067862 A CN 201811067862A CN 110894090 A CN110894090 A CN 110894090A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/488—Treatment of water, waste water, or sewage with magnetic or electric fields for separation of magnetic materials, e.g. magnetic flocculation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- Hydrology & Water Resources (AREA)
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- Inorganic Chemistry (AREA)
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention provides an algicide which is characterized by comprising the following components in percentage by weight: 5-30 parts of flocculating agent, 30-45 parts of mineral powder, 2-20 parts of magnetic powder, 0.3-14.0 parts of polysaccharide, 0.8-2 parts of algae inhibitor and 2.6-15 parts of biological bacteria powder. The components of the algicide exist in the nature, and are cheap and easy to obtain, low in cost and less in residue. The algicide provided by the invention adopts environment-friendly raw materials, can effectively remove algae, phosphorus and ammonium ions in wastewater, also obviously reduces turbidity and chemical oxygen demand (CODcr) in the wastewater, and has the effects of purifying the wastewater and beautifying the environment. Meanwhile, after the algicide provided by the invention is used for treating wastewater, the phenomenon of reverse bleaching of algae under illumination can not occur in a water body, the phenomenon of whitening can not occur, and the secondary pollution is effectively avoided.
Description
Technical Field
The invention relates to an algicide and application thereof.
Background
Algae outbreaks have become a major factor in water pollution at present. A large amount of aquatic organisms in a water body die due to the explosion of algae in rivers and lakes, and the dead organisms are decomposed to generate a large amount of various substances required by the growth of algae, such as ammonia nitrogen and the like under the action of microorganisms, so that nutrient substances are further provided for the growth of the algae, and the regrowth of the algae is promoted. A large amount of algae grows and gathers on the surface of the water body, oxygen in the water body is consumed through photosynthesis, an anaerobic environment is generated in the water body, an anaerobic reaction is generated, odor is released, and the life of people is seriously influenced. In addition, the algal toxin released by the algal bodies is neurotoxin, and the poisoning event can be caused when the algal toxin enters the human body. Therefore, algae removal has become an important direction for current environmental remediation.
At present, methods for removing algae are classified into physical removal, chemical removal, and biological removal. The physical removal mainly comprises manual salvage, mechanical salvage, ultrasonic waves, clay flocculation, shading and the like, but the processing range and the processing capacity are limited at present, a large amount of manpower and material resources are required to be input, and secondary outbreak is easy to happen. The chemical removal mainly utilizes strong oxidants such as chlorine dioxide, copper sulfate, diuron, sodium dichloroisocyanurate, benzalkonium bromide, glutaraldehyde, cinnamic acid, tetraalkylammonium complex iodine, hydrogen peroxide and the like and bactericides to kill algae, has the advantages of simple and convenient operation, obvious effect and low one-time use cost, but is easy to generate negative influence on a water ecosystem to ensure that the algae generates drug resistance. The biological removal mainly utilizes algae-lysing aeromonas, algae-lysing bacillus and the like to remove algae, and the algae removal mode has the advantages of small influence on the environment and low cost, but is easily influenced by natural conditions and climate and has long realization effect time. The algaecide in the market is usually suitable for the water bodies of attached algae such as fish tanks and swimming pools, and when the algaecide is used for surface water bodies, the algae bodies after bottom sinking can be floated on the surface of the water bodies again under the action of illumination due to the existence of photosynthesis to generate secondary floating of the algae.
Disclosure of Invention
The invention provides an algicide, which comprises the following components: 5-30 parts of flocculating agent, 30-45 parts of mineral powder, 2-20 parts of magnetic powder, 0.3-14.0 parts of polysaccharide, 0.8-2 parts of algae inhibitor and 2.6-15 parts of biological bacteria powder. The components of the algicide exist in the nature, and are cheap and easy to obtain, low in cost and less in residue. The algicide provided by the invention adopts environment-friendly raw materials, can effectively remove algae, phosphorus and ammonium ions in wastewater, also obviously reduces turbidity and chemical oxygen demand (CODcr) in the wastewater, and has the effects of purifying the wastewater and beautifying the environment. Meanwhile, after the algicide provided by the invention is used for treating wastewater, the phenomenon of reverse bleaching of algae under illumination can not occur in a water body, the phenomenon of whitening can not occur, and the secondary pollution is effectively avoided.
Meanwhile, the algicide has wide application range, is suitable for fish tanks and swimming pools, is also suitable for various surface waters, and is preferably suitable for surface waters of floating algae such as riverways, lakes, oceans and the like.
As an embodiment, the algicide comprises the following components: 10-25 parts of flocculating agent, 30-40 parts of mineral powder, 6-15 parts of magnetic powder, 0.5-13.0 parts of polysaccharide, 0.8-1.7 parts of algae inhibitor, 5-10 parts of biological bacteria powder and 10-15 parts of photocatalyst. The photocatalyst preferably added in the invention mainly plays a role of catalysis, can be adsorbed on the surface of the algae and absorbs ultraviolet rays in sunlight, and the ultraviolet rays have a sterilization function and can kill the algae belonging to a microbial agent. Therefore, the addition of the photocatalyst obviously promotes the algae killing effect of the algicide.
As an embodiment, the algicide comprises the following components: 5-30 parts of flocculating agent, 30-45 parts of mineral powder, 2-20 parts of magnetic powder, 0.3-14.0 parts of polysaccharide, 0.8-2 parts of algae inhibitor, 2.6-15 parts of biological bacteria powder, 5-20 parts of photocatalyst and 10-30 parts of cement. The preferred cement is added in the invention, the algae flocs are mutually consolidated into a whole by utilizing the consolidation action of the cement, the specific gravity is increased, the anti-buoyancy of the algae flocs is increased, a certain time is provided for the algae inhibitor to kill algae, and the algae killing effect of the algae inhibitor is promoted.
In one embodiment, the flocculant is at least one selected from the group consisting of polyaluminum chloride, polyferric chloride, polyaluminum sulfate, and polyferric sulfate.
As an embodiment, the flocculant is selected from polyaluminium chloride and/or polyaluminium sulphate.
In one embodiment, the ore powder is at least one selected from kaolin, diatomaceous earth, zeolite powder and lime powder.
In one embodiment, the mineral powder is selected from zeolite powder and/or diatomaceous earth.
In one embodiment, the magnetic powder is selected from ferromagnetic powders. The iron content of the ferromagnetic powder is more than 99%.
In one embodiment, the polysaccharide is at least one selected from maltodextrin, xanthan gum, chitosan and sodium alginate.
In one embodiment, the polysaccharide is at least one selected from xanthan gum powder, chitosan, and maltodextrin.
In one embodiment, the algal mass inhibitor is at least one selected from the group consisting of glyphosate, glufosinate, amicarbazone and metamitron.
In one embodiment, the algal inhibitor is at least one selected from metamitron, glyphosate and glufosinate.
In one embodiment, the biological bacterial powder is selected from ammonia nitrogen removing bacterial powder and/or CODcr removing bacterial powder; the biological activity of the biological bacteria powder is 105～106one/mL.
In one embodiment, the photocatalyst is at least one selected from titanium dioxide, zinc oxide, tin oxide and zirconium dioxide.
In one embodiment, the photocatalyst is selected from titanium dioxide and/or zinc oxide.
The invention provides an application of the algicide in wastewater treatment, which comprises the steps of mixing the components of the algicide to obtain the algicide, and then adding the algicide into wastewater. After the algicide provided by the invention is used for treating wastewater, the phenomenon of reverse bleaching of algae under illumination can not occur in a water body, the phenomenon of whitening can not occur, and secondary pollution can not be generated.
As an embodiment, it comprises adding the algicide to the wastewater while stirring the wastewater. As an embodiment, the method comprises stirring the wastewater for 1-3 min, and then adding the algicide into the wastewater while stirring the wastewater.
In one embodiment, the stirring speed is 20-45 r/min; the stirring time is 2-5 min; the stirring temperature is 10-35 ℃.
In one embodiment, the pH of the wastewater is 6.0-9.0; the turbidity in the wastewater is 10.0-69.7 NTU.
In one embodiment, the pH of the wastewater is 7.0-8.0; and the turbidity in the wastewater is 20.0-55.0 NTU.
In one embodiment, the wastewater contains algae; the concentration of algae in the wastewater is 0.5-10.0 g/L (wet weight); the thickness of the algae in the wastewater is 0.5-3 mm.
In one embodiment, the concentration of algae in the wastewater is 2.0-7.5 g/L (wet weight); the thickness of the algae in the wastewater is 1.0-2.0 mm.
In one embodiment, the algae is at least one of blue-green algae, brown algae, and red algae.
In one embodiment, the algae is blue-green algae.
In one embodiment, the wastewater contains phosphorus and ammonium ions.
In one embodiment, the concentration of phosphorus in the wastewater is 0.05-1.2 mg/L; the concentration of ammonium ions in the wastewater is 0.2-4.6 mg/L.
In one embodiment, the concentration of phosphorus in the wastewater is 0.1-1.0 mg/L; the concentration of ammonium ions in the wastewater is 0.25-3.5 mg/L.
In one embodiment, the mass ratio of the algae to the algicide in the wastewater is 5: 1-50: 1; the mass ratio of the total mass of phosphorus and ammonium ions in the wastewater to the algicide is (1: 1000-1): 12.5.
as an embodiment, the mass ratio of the algae to the algicide in the wastewater is 10: 1-40: 1; the mass ratio of the total mass of the phosphorus and ammonium ions in the wastewater to the algicide is 1: 571.43-1: 44.44.
In one embodiment, the reaction time of adding the algicide into the wastewater is 2-5 min.
In one embodiment, the reaction temperature of the algicide added into the wastewater is 10-50 ℃.
The addition sequence of the components of the algicide does not influence the technical effect of the algicide.
In the invention, the flocculating agent forms a flocculating body with the algae body through electrostatic action and sinks to the bottom, and meanwhile, the added magnetic powder and the formed flocculating body can form a flocculating body taking the magnetic powder as the center, thereby increasing the specific gravity of the flocculating body and improving the settling speed of the flocculating body; the polysaccharide body can enable non-aggregative micro particles to aggregate together to form a flocculating constituent with a larger specific gravity, and the flocculating constituent is settled at the bottom to promote the clarity of the water body. According to the invention, through the mutual synergistic effect of the flocculating agent, the magnetic powder and the polysaccharide, the algae in the wastewater can be thoroughly removed, and pollutants such as ammonia nitrogen, CODCR, total phosphorus and the like in the wastewater can be effectively removed.
When the concentration of oxygen generated by the algae in the wastewater through photosynthesis reaches a certain amount, the flocculant precipitated at the bottom can float on the surface of the water again under the action of buoyancy, so that secondary pollution is generated. Therefore, the algae inhibitor is added to destroy the cell structure of algae and cut off the electron transfer of photosynthesis, so as to inhibit the photosynthesis and avoid secondary pollution. Meanwhile, the algae inhibitor has a strong sterilization effect, and can kill part of microorganisms in the water body when added into the water, so that bacterial colony unbalance is caused in the water body, and the ammonia nitrogen content in the water body is increased rapidly due to the bacterial colony unbalance, so that the water body is whitened. Therefore, the biological bacterial powder is added to supplement lost microorganisms, so that the phenomenon of bacterial colony unbalance is inhibited, and the water body whitening phenomenon is avoided. The invention utilizes the larger surface area and the super-strong adsorbability of the ore powder to thoroughly remove ammonium ions which are dissolved in water but cannot be removed.
Detailed Description
The following specific examples describe the present invention in detail, however, the present invention is not limited to the following examples. The test method in the wastewater of the invention comprises the following steps:
test method of ammonium ion: hash DR6000 detection method
Testing of CODcr value: hash DR6000 detection method
And (3) testing TP: GB/T603 and GB/T6682.
Testing of turbidity: HACH2100P turbidimeter.
The parts are all parts by mass.
Example 1:
taking 30 parts of polyaluminium chloride, 45 parts of zeolite powder, 15 parts of ferromagnetic powder, 0.5 part of xanthan gum, 2.0 parts of metamitron and 7.5 parts of 10 parts of metamitron6The ammonia nitrogen removal bacterium powder of each/mL is mixed evenly to obtain 100g of algicide. Taking 500L of wastewater (the thickness of algae in the wastewater is 2mm, the concentration of algae is 7.5g/L, the algae is blue-green algae), adding 100g of algicide into the wastewater, and stirring and reacting at 35 ℃ for 5min at the stirring speed of 45 r/min. After the precipitate settled, the supernatant was collected for assay, and the results are shown in table 1:
TABLE 1
Example 2:
taking 18.9 parts of polyaluminium chloride, 45 parts of kaolin, 20 parts of magnetic powder, 0.3 part of xanthan gum, 0.8 part of metamitron and 15 parts of 10 parts of benzoxydim5The ammonia nitrogen removal bacterium powder of each/mL is mixed evenly to obtain 100g of algicide. Taking 500L of wastewater (the thickness of algae in the wastewater is 1.0mm, the concentration is 2.0g/L, the algae is blue-green algae), adding 100g of algicide into the wastewater, and stirring and reacting at 10 ℃ for 5min at the stirring speed of 45 r/min. After the precipitate settled, the supernatant was collected for assay, and the results are shown in table 2:
TABLE 2
Example 3:
taking 5 parts of polyaluminium chloride, 45 parts of diatomite, 4 parts of magnetic powder, 14 parts of xanthan gum and 2.0 parts of metamitron15 parts of 106And uniformly mixing the ammonia nitrogen removal bacterium powder per mL and 15 parts of titanium dioxide to obtain 100g of the algicide. Taking 500L of wastewater (the thickness of algae in the wastewater is 2mm, the concentration is 7.5g/L, the algae is blue-green algae), adding 100g of algicide into the wastewater, and stirring and reacting at 35 ℃ for 2min at the stirring speed of 20 r/min. After the precipitate settled, the supernatant was collected for assay, and the results are shown in table 3:
TABLE 3
Example 4:
taking 30 parts of polyaluminium chloride, 30 parts of zeolite powder, 2 parts of magnetic powder, 14 parts of chitosan, 1.0 part of metamitron, 13 parts of titanium dioxide and 10 parts of6The ammonia nitrogen removal bacterium powder is uniformly mixed per ml to obtain 100g of the algicide. Taking 500L of wastewater (the thickness of algae in the wastewater is 2mm, the concentration is 5g/L, the algae is blue-green algae), adding 100g of algicide into the wastewater, and stirring at 35 ℃ for reaction for 2min at the stirring speed of 45 r/min. After the precipitate settled, the supernatant was collected for assay, and the results are shown in table 4:
TABLE 4
Example 5:
taking 30 parts of polyaluminium chloride, 37.4 parts of lime powder, 2 parts of magnetic powder, 14 parts of maltodextrin, 1.0 part of glufosinate-ammonium and 2.6 parts of 106And mixing the ammonia nitrogen removal bacterium powder per ml with 13 parts of titanium dioxide to obtain 100g of the algicide. Taking 500L of wastewater (the thickness of algae in the wastewater is 3mm, the concentration is 10.0g/L, the algae is blue-green algae), adding 100g of algicide into the wastewater, and stirring and reacting at 25 ℃ for 5min at the stirring speed of 40 r/min. After the precipitate settled, the supernatant was collected for assay, and the results are shown in table 5:
TABLE 5
Example 6:
taking 30 parts of polyaluminium chloride, 37.4 parts of zeolite powder, 5 parts of magnetic powder, 14 parts of xanthan gum, 1.0 part of glyphosate and 2.6 parts of 106And mixing the ammonia nitrogen removal bacterium powder per ml and 10 parts of titanium dioxide to obtain 100g of the algicide. Taking 500L of wastewater (the thickness of algae in the wastewater is 1.5mm, the concentration is 4.3g/L, the algae is brown algae), adding 100g of algicide into the wastewater, and stirring and reacting at 35 ℃ for 3min at the stirring speed of 35 r/min. After the precipitate settled, the supernatant was collected for assay, and the results are shown in table 6:
TABLE 6
Example 7
Taking 20 parts of polyaluminium chloride, 37.4 parts of zeolite powder, 5 parts of magnetic powder, 14 parts of chitosan, 1.0 part of amicarbazone and 2.6 parts of 10 parts of6Mixing ammonia nitrogen removal bacterium powder per ml, 10 parts of titanium dioxide and 10 parts of cement to obtain 100g of algicide. Taking 500L of wastewater (the thickness of algae in the wastewater is 0.5mm, the concentration is 2.0g/L, the algae is blue-green algae), firstly stirring the obtained wastewater for 1min, adding 100g of algicide into the wastewater, stirring and reacting for 2min at 10 ℃, and the stirring speed is 20 r/min. After settling, the supernatant was taken for assay and the results are shown in table 7:
TABLE 7
Example 8:
taking 10 parts of polyaluminium chloride, 27.4 parts of zeolite powder, 5 parts of magnetic powder, 14 parts of maltodextrin, 1.0 part of glufosinate-ammonium and 2.6 parts of 106Mixing ammonia nitrogen removal bacterium powder per ml, 10 parts of titanium dioxide and 30 parts of cement to obtain 100g of algicide. Taking 500L wastewater (the thickness of algae in the wastewater is 2mm, the concentration is 8.0g/L, the algae is brown algae), firstly stirring the obtained wastewater for 1min, adding 100g algicide into the wastewater, stirring and reacting for 5min at 35 ℃, and stirringThe speed was 45 r/min. After the precipitate settled, the supernatant was collected and analyzed, and the results are shown in table 8:
TABLE 8
Claims (20)
1. An algicide, which is characterized in that: comprises the following components:
5-30 parts of flocculating agent, 30-45 parts of mineral powder, 2-20 parts of magnetic powder, 0.3-14.0 parts of polysaccharide, 0.8-2 parts of algae inhibitor and 2.6-15 parts of biological bacteria powder.
2. The algicide of claim 1, wherein: comprises the following components:
10-25 parts of flocculating agent, 30-40 parts of mineral powder, 6-15 parts of magnetic powder, 0.5-13.0 parts of polysaccharide, 0.8-1.7 parts of algae inhibitor, 5-10 parts of biological bacteria powder and 10-15 parts of photocatalyst.
3. The algicide of claim 1, wherein: comprises the following components:
5-30 parts of flocculating agent, 30-45 parts of mineral powder, 2-20 parts of magnetic powder, 0.3-14.0 parts of polysaccharide, 0.8-2 parts of algae inhibitor, 2.6-15 parts of biological bacteria powder, 5-15 parts of photocatalyst and 10-30 parts of cement.
4. The algicide according to any one of claims 1 to 3, wherein: the flocculating agent is selected from at least one of polyaluminium chloride, polyferric chloride, polyaluminium sulfate and polyferric sulfate.
5. The algicide of claim 4, wherein: the flocculant is selected from polyaluminium chloride and/or polyaluminium sulfate.
6. The algicide according to any one of claims 1 to 3, wherein: the mineral powder is at least one of kaolin, diatomite, zeolite powder and lime powder.
7. The algicide of claim 6, wherein: the mineral powder is selected from zeolite powder and/or diatomite.
8. The algicide according to any one of claims 1 to 3, wherein: the magnetic powder is selected from ferromagnetic powder.
9. The algicide according to any one of claims 1 to 3, wherein: the polysaccharide is at least one selected from maltodextrin, xanthan gum, chitosan and sodium alginate.
10. The algicide according to any one of claims 1 to 3, wherein: the algae inhibitor is at least one selected from glyphosate, glufosinate, amicarbazone and metamitron.
11. The algicide according to any one of claims 1 to 3, wherein: the biological bacteria powder is selected from ammonia nitrogen removing bacteria powder and/or CODcr removing bacteria powder; the biological activity of the biological bacteria powder is 105～106one/mL.
12. The algicide according to claim 2 or 3, wherein: the photocatalyst is at least one selected from titanium dioxide, zinc oxide, tin oxide and zirconium dioxide.
13. Use of the algicide according to any one of claims 1 to 3 in the treatment of wastewater, comprising mixing the components of the algicide to obtain the algicide and adding the algicide to the wastewater.
14. The use of claim 13, wherein: adding an algicide into the wastewater while stirring the wastewater, wherein the stirring speed is 20-45 r/min; the stirring time is 2-5 min; the stirring temperature is 10-35 ℃.
15. The use of claim 13, wherein: the pH value of the wastewater is 6.0-9.0; the turbidity in the wastewater is 10.0-69.7 NTU.
16. The use of claim 13, wherein: the wastewater contains algae; the concentration of algae in the wastewater is 0.5-10.0 g/L (wet weight); the thickness of the algae in the wastewater is 0.5-3 mm.
17. The use of claim 16, wherein: the algae comprises at least one of blue-green algae, brown algae and red algae.
18. The use of claim 13, wherein: the wastewater contains phosphorus and ammonium ions, and the concentration of phosphorus in the wastewater is 0.05-1.2 mg/L; the concentration of ammonium ions in the wastewater is 0.2-4.6 mg/L.
19. The use of claim 16, wherein: the mass ratio of the algae to the algicide in the wastewater is 5: 1-50: 1; or the mass ratio of the total mass of the phosphorus and ammonium ions in the wastewater to the algicide is 1: 1000-1: 12.5.
20. the use of claim 19, wherein: the mass ratio of the algae to the algicide in the wastewater is 10: 1-40: 1; the mass ratio of the total mass of the phosphorus and ammonium ions in the wastewater to the algicide is 1: 571.43-1: 44.44.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114933368A (en) * | 2022-04-28 | 2022-08-23 | 宁波三江益农化学有限公司 | Composition for controlling algae |
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Address after: Building 1-3, 619 Caifeng Road, Huzhou City, Zhejiang Province, 313000 Applicant after: Euro American new materials (Zhejiang) Co.,Ltd. Address before: No.688 Xifeng Road, Huzhou Economic and Technological Development Zone, Huzhou City, Zhejiang Province, 313000 Applicant before: OCHEMATE MATERIAL TECHNOLOGIES Co.,Ltd. |
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Application publication date: 20200320 |
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| RJ01 | Rejection of invention patent application after publication |