CN110818107A - Phosphorus-fixing oxygen-releasing material and preparation method and application thereof - Google Patents
Phosphorus-fixing oxygen-releasing material and preparation method and application thereof Download PDFInfo
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- CN110818107A CN110818107A CN201911219944.7A CN201911219944A CN110818107A CN 110818107 A CN110818107 A CN 110818107A CN 201911219944 A CN201911219944 A CN 201911219944A CN 110818107 A CN110818107 A CN 110818107A
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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
- C02F7/00—Aeration of stretches of water
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
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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
- C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
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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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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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
- C02F2101/105—Phosphorus compounds
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Biotechnology (AREA)
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- Biodiversity & Conservation Biology (AREA)
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to the technical field of water body restoration, in particular to a phosphorus-fixing oxygen-releasing material and a preparation method and application thereof. The phosphorus-fixing oxygen-releasing material comprises the following components in parts by weight: 10-30 parts of calcium peroxide, 25-55 parts of a carrier, 25-40 parts of an embedding agent and 25-50 parts of a flocculating agent; the flocculant comprises chitosan and/or polyacrylamide. The phosphorus-fixing oxygen-releasing material provided by the invention enables the lake substrate to have three effects of higher dissolved oxygen, inhibiting secondary release of phosphorus and improving the transparency of the lake, so that the submerged plant has a good growth and propagation environment.
Description
Technical Field
The invention relates to the technical field of water body restoration, in particular to a phosphorus-fixing oxygen-releasing material and a preparation method and application thereof.
Background
At present, domestic research pays more attention to social hotspot problems such as lake eutrophication, black and odorous water bodies and the like, and domestic engineering generally adopts comprehensive measures of exogenous control, endogenous reduction, ecological restoration and clear water replenishment to repair lakes at present. The external source control, the internal source reduction and other technical measures can only cut off the discharge and release of external pollutants from the source or the outside, and the water quality of the lake is ensured not to be deteriorated in a short time. In the long term, the lake cannot be provided with self-cleaning capability. And the ecological restoration is mainly realized by planting submerged plants, adding fishes and benthonic animals to establish a food net, so that a healthy ecological system is established in the lake, and good self-digestion and self-purification capacity is formed. The successful planting of the submerged plants is related to the construction of the whole lake ecological system, and plays an important role in healthy lakes. However, in the actual ecological restoration engineering, the problems of insufficient dissolved oxygen at the bottom of the lake, secondary release of phosphorus in bottom mud and low transparency of the lake are faced in the submerged plant planting, and the unfavorable conditions generate huge stress on the growth of the submerged plants. Therefore, the development of a substrate improvement method which can improve the dissolved oxygen at the bottom of the lake, inhibit the secondary release of phosphorus in the substrate sludge and improve the transparency of the lake plays an important role in the growth and propagation of the submerged plants.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The invention relates to a phosphorus-fixing oxygen-releasing material which comprises the following components in parts by weight:
10-30 parts of calcium peroxide, 25-55 parts of a carrier, 25-40 parts of an embedding agent and 25-50 parts of a flocculating agent;
the flocculant comprises chitosan and/or polyacrylamide.
The material obtained by the cooperation of the calcium peroxide, the carrier, the embedding agent and the flocculating agent can improve the dissolved oxygen at the bottom of the water body, inhibit the secondary release of phosphorus and improve the transparency of the water body.
According to another aspect of the invention, the invention relates to a preparation method of a phosphorus-fixing oxygen-releasing material, which comprises the following steps:
mixing and stirring calcium peroxide, a carrier, an embedding agent and a flocculating agent to obtain the phosphorus-fixing oxygen-releasing material.
The preparation method is simple and easy to implement, the related preparation instruments are common, the preparation threshold is low, and the preparation method has a prospect of large-scale application.
According to another aspect of the invention, the invention relates to a water body restoration method, which adopts the phosphorus-fixing oxygen-releasing material.
The phosphorus-fixing oxygen-releasing material is applied to water body restoration, so that the coverage of submerged plants can be better improved, and the water body is improved.
Compared with the prior art, the invention has the beneficial effects that:
(1) compared with the prior art, the material has more comprehensive functional application through the phosphorus-fixing oxygen-releasing material, so that the lake substrate has three effects of higher dissolved oxygen, inhibiting secondary release of phosphorus and improving the transparency of the lake, and submerged plants have good growth and reproduction environments.
(2) The preparation method of the phosphorus-fixing oxygen-releasing material is simple and feasible, the material with excellent performance can be obtained by mixing and stirring the components, the related preparation instruments are common, the preparation threshold is low, and the phosphorus-fixing oxygen-releasing material has a prospect of large-scale application.
(3) The preparation cost of the phosphorus-fixing oxygen-releasing material can be reduced by 30%, the coverage of the submerged plant is improved by 20%, and the recovery effect and the investment of the submerged plant are obviously improved.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.
According to one aspect of the invention, the invention relates to a phosphorus-fixing oxygen-releasing material which comprises the following components in parts by weight:
10-30 parts of calcium peroxide, 25-55 parts of a carrier, 25-40 parts of an embedding agent and 25-50 parts of a flocculating agent;
the flocculant comprises chitosan and/or polyacrylamide.
According to the invention, calcium peroxide is used as an oxygen release agent, so that the dissolved oxygen at the bottom of the water body can be improved, chitosan and/or polyacrylamide is used as a flocculating agent, and the chitosan and/or polyacrylamide is matched with a carrier and an embedding agent, so that the dissolved oxygen at the bottom of the water body can be well improved, the secondary release of phosphorus in bottom mud is inhibited, and the transparency of lakes is improved.
Preferably, the flocculant comprises chitosan and polyacrylamide, and the mass ratio of the polyacrylamide to the chitosan is 1: (1-4), more preferably 1: 2.
In one embodiment, the calcium peroxide is 10 to 30 parts, and optionally 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, 25 parts, 26 parts, 27 parts, 28 parts or 29 parts.
In one embodiment, the carrier is 25 to 55 parts, and may be selected from 26 parts, 27 parts, 28 parts, 29 parts, 30 parts, 31 parts, 32 parts, 33 parts, 34 parts, 35 parts, 36 parts, 37 parts, 38 parts, 39 parts, 40 parts, 41 parts, 42 parts, 43 parts, 44 parts, 45 parts, 46 parts, 47 parts, 48 parts, 49 parts, 50 parts, 51 parts, 52 parts, 53 parts and 54 parts.
In one embodiment, the embedding medium is 25-40 parts, and may be selected from 26 parts, 27 parts, 28 parts, 29 parts, 30 parts, 31 parts, 32 parts, 33 parts, 34 parts, 35 parts, 36 parts, 37 parts, 38 parts and 39 parts.
In one embodiment, the flocculant is 25 to 50 parts, and may be selected from 26 parts, 27 parts, 28 parts, 29 parts, 30 parts, 31 parts, 32 parts, 33 parts, 34 parts, 35 parts, 36 parts, 37 parts, 38 parts, 39 parts, 40 parts, 41 parts, 42 parts, 43 parts, 44 parts, 45 parts, 46 parts, 47 parts, 48 parts, and 49 parts.
Preferably, the phosphorus-fixing oxygen-releasing material comprises the following components in parts by weight:
15-25 parts of calcium peroxide, 28-50 parts of a carrier, 30-36 parts of an embedding agent and 30-46 parts of a flocculating agent.
By further optimizing the proportion of each component, the effects of improving the dissolved oxygen at the bottom of the water body, inhibiting the secondary release of phosphorus and improving the transparency of the water body can be better achieved.
Preferably, the carrier comprises at least one of kaolin, medical stone, attapulgite, expanded vermiculite and diatomite;
preferably, the carrier comprises kaolin and medical stone.
According to the invention, at least one of kaolin, medical stone, attapulgite, expanded vermiculite and diatomite in a specific addition amount is used as a carrier, so that a phosphorus adsorption effect can be better achieved.
Wherein, the kaolin is in a white, fine and soft soil shape and has good physical and chemical properties such as plasticity, fire resistance and the like. Mainly comprises kaolinite, halloysite, hydromica, illite, montmorillonite, quartz, feldspar and other minerals.
Maifanitum has adsorption, solubility, regulation, bioactivity, and mineralization properties. It can adsorb free metal ions in water and has strong adsorption effect on bacteria.
The invention preferably adopts the matching of kaolin and medical stone to better fix the phosphorus in the water body and inhibit the secondary release of the phosphorus.
Preferably, the embedding agent comprises a polyvinyl alcohol solution;
preferably, the mass percentage of the polyvinyl alcohol in the polyvinyl alcohol solution is 8-15%.
The invention adopts polyvinyl alcohol as embedding agent, and can better coat calcium peroxide, carrier and flocculating agent.
In one embodiment, the polyvinyl alcohol solution contains 8% to 15% by mass of polyvinyl alcohol, and may further contain 8.5%, 9%, 9.5%, 10%, 10.5%, 11%, 11.5%, 12%, 12.5%, 13%, 13.5%, or 14%.
Preferably, the phosphorus-fixing oxygen-releasing material comprises the following components in parts by weight:
10-30 parts of calcium peroxide, 10-30 parts of kaolin, 15-25 parts of medical stone, 25-40 parts of polyvinyl alcohol solution, 20-30 parts of chitosan and 5-20 parts of polyacrylamide;
the mass percentage of polyvinyl alcohol in the polyvinyl alcohol solution is 8-15%.
In a preferred embodiment, the phosphorus-fixing and oxygen-releasing material prepared from 10-30 parts of calcium peroxide, 10-30 parts of kaolin, 15-25 parts of medical stone, 25-40 parts of polyvinyl alcohol solution, 20-30 parts of chitosan and 5-20 parts of polyacrylamide has a good effect on fixing and releasing phosphorus and oxygen in water.
According to another aspect of the invention, the invention relates to a preparation method of a phosphorus-fixing oxygen-releasing material, which comprises the following steps:
mixing and stirring calcium peroxide, a carrier, an embedding agent and a flocculating agent to obtain the phosphorus-fixing oxygen-releasing material.
The preparation method of the phosphorus-fixing oxygen-releasing material is simple and feasible, and the material with excellent performance can be obtained by mixing and stirring the components.
Preferably, the stirring time is 6-24 h;
in one embodiment, the stirring time is 6-24 h, and 8h, 10h, 12h, 15h, 18h, 20 h or 22h can be selected.
Preferably, the stirring time is 12 h.
In a preferred embodiment, the preparation method of the phosphorus-fixing oxygen-releasing material comprises the following steps:
(a) putting polyvinyl alcohol into distilled water to prepare a polyvinyl alcohol solution, wherein the polyvinyl alcohol solution comprises 8-15% of polyvinyl alcohol by mass; the temperature of the distilled water is 98-100 ℃;
(b) and mixing and stirring the calcium peroxide, the carrier, the embedding agent and the flocculating agent for 6-24 hours to obtain the phosphorus-fixing oxygen-releasing material.
According to another aspect of the invention, the invention also relates to a water body restoration method, which adopts the phosphorus-fixing oxygen-releasing material.
Preferably, the water body remediation method comprises the following steps:
applying a phosphorus-fixing oxygen-releasing material at the bottom of the water body, and planting vegetation for water body restoration;
preferably, the vegetation comprises tape grass.
The components of the phosphorus-fixing oxygen-releasing material reduce the preparation cost by 30 percent, improve the coverage of the submerged plant by 20 percent and obviously improve the recovery effect and the investment of the submerged plant.
The present invention will be further explained with reference to specific examples and comparative examples.
Example 1
A phosphorus-fixing oxygen-releasing material comprises the following components in parts by weight:
20 parts of calcium peroxide, 10 parts of kaolin, 15 parts of medical stone, 25 parts of polyvinyl alcohol solution, 20 parts of chitosan and 10 parts of polyacrylamide;
wherein the mass percent of polyvinyl alcohol in the polyvinyl alcohol solution is 10%;
a preparation method of a phosphorus-fixing oxygen-releasing material comprises the following steps:
(a) putting polyvinyl alcohol into distilled water, and preparing to obtain a polyvinyl alcohol solution, wherein the temperature of the distilled water is 100 ℃;
(b) mixing and stirring calcium peroxide, a carrier, a polyvinyl alcohol solution and a flocculating agent for 12 hours to obtain the phosphorus-fixing oxygen-releasing material.
Example 2
A phosphorus-fixing oxygen-releasing material comprises the following components in parts by weight:
30 parts of calcium peroxide, 10 parts of kaolin, 15 parts of medical stone, 25 parts of polyvinyl alcohol solution, 20 parts of chitosan and 5 parts of polyacrylamide;
a preparation method of a phosphorus-fixing oxygen-releasing material comprises the following steps:
(a) putting polyvinyl alcohol into distilled water, and preparing a polyvinyl alcohol solution, wherein the temperature of the distilled water is 98 ℃;
(b) mixing and stirring calcium peroxide, a carrier, a polyvinyl alcohol solution and a flocculating agent for 6 hours to obtain the phosphorus-fixing oxygen-releasing material.
Example 3
A phosphorus-fixing oxygen-releasing material comprises the following components in parts by weight:
10 parts of calcium peroxide, 30 parts of kaolin, 25 parts of medical stone, 40 parts of polyvinyl alcohol solution, 30 parts of chitosan and 20 parts of polyacrylamide;
a preparation method of a phosphorus-fixing oxygen-releasing material comprises the following steps:
(a) putting polyvinyl alcohol into distilled water, and preparing to obtain a polyvinyl alcohol solution, wherein the temperature of the distilled water is 99 ℃;
(b) mixing and stirring calcium peroxide, a carrier, a polyvinyl alcohol solution and a flocculating agent for 24 hours to obtain the phosphorus-fixing oxygen-releasing material.
Example 4
The preparation method of the phosphorus-fixing oxygen-releasing material is the same as that of example 1 except that 5 parts by weight of polyacrylamide is added.
Example 5
The preparation method of the phosphorus-fixing oxygen-releasing material is the same as that of the embodiment 1 except that 20 parts by weight of polyacrylamide is added.
Example 6
The preparation method of the phosphorus-fixing oxygen-releasing material is the same as that in example 1 except that 30 parts by weight of chitosan is only adopted as a flocculating agent.
Example 7
The operation steps of the phosphorus-fixing oxygen-releasing material are the same as those of the embodiment 1 except that the flocculating agent only adopts 30 parts by weight of polyacrylamide.
Comparative example 1
A preparation method of a phosphorus-fixing oxygen-releasing material comprises the following components in parts by weight: the operation procedures except for 5 parts of calcium peroxide, 5 parts of kaolin, 55 parts of medical stone, 45 parts of polyvinyl alcohol solution, 15 parts of chitosan and 3 parts of polyacrylamide are the same as those in example 1.
The ratio of the components in comparative example 1 is out of the scope of the present invention.
Comparative example 2
The preparation method of the phosphorus-fixing oxygen-releasing material is the same as that in example 1 except that no flocculating agent is added.
Experimental example 1
The phosphorus-fixing oxygen-releasing materials obtained in the examples and the comparative examples are put into an experimental area in a lake in equal quantity, bitter herbs in equal quantity are planted, and various indexes are measured regularly, wherein the test conditions are as follows: measuring the change condition of the total phosphorus in the lake, as shown in table 1; the change of the dissolved oxygen in the lake is shown in table 2; the lake visibility changes as shown in table 3.
TABLE 1 lake Total phosphorus Change (mg/L)
As can be seen from Table 1, the material obtained by using the calcium peroxide, the embedding agent, the carrier, the chitosan and the polyacrylamide in a specific ratio has a good phosphorus fixation effect. With the increase of time, the total phosphorus content in the experimental area of the lake is gradually reduced. Comparative example 1 the composition ratios of the components are out of the range to be protected by the present invention, and the inhibition effect on the release of phosphorus in water is relatively poor when the composition is used in experimental areas of lakes.
TABLE 2 lake dissolved oxygen variation (mg/L)
As can be seen from Table 2, the material obtained by the coordination of calcium peroxide, embedding agent, carrier, chitosan and polyacrylamide can make the bottom of the lake have higher dissolved oxygen, and the effect is efficient and durable. The proportion of each component in the comparative example 1 is not in the range to be protected by the invention, the obtained material has the effect of acting on the experimental area of the lake, which is inferior to the effect of the application, the acting effect of the material is gradually weakened along with the time, and the durability is relatively poor.
TABLE 3 lake visibility Change (m)
As can be seen from Table 3, the material obtained by the coordination of calcium peroxide, embedding agent, carrier, chitosan and polyacrylamide has excellent effect of improving the transparency of lakes. The phosphorus-fixing oxygen-releasing material obtained in the embodiment 1 is put in the invention, the visibility of the lake in 10 months and 7 days is 3m, the visibility is high, and the material has a good slow-release effect, is efficient and durable. Example 6 only uses chitosan as a flocculating agent, and example 7 only uses acrylamide as a flocculating agent, which is inferior to the effect of the material of example 1 on the lake experimental area in the aspect of improving the transparency of the lake. The component ratios of the comparative example 1 are out of the range to be protected by the invention, and the obtained material has poorer effect on improving the transparency of the lake than the material of the example. Comparative example 2 no flocculant was added and the resulting material was less effective in improving lake clarity than the examples.
According to the invention, by adopting the calcium peroxide, the carrier, the embedding agent and the flocculating agent (chitosan and/or polyacrylamide) in a specific ratio, the obtained phosphorus-fixing oxygen-releasing material has three effects of higher dissolved oxygen, inhibiting secondary release of phosphorus and improving the transparency of the lake, so that the submerged plant has a good growth and propagation environment and plays a certain role in the research process of improving the desertification of the bottom of the lake. The preparation cost of the material is reduced by 30 percent, and the coverage of submerged plants is improved by 20 percent. The recovery effect and investment of submerged plants are remarkably improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The phosphorus-fixing oxygen-releasing material is characterized by comprising the following components in parts by weight:
10-30 parts of calcium peroxide, 25-55 parts of a carrier, 25-40 parts of an embedding agent and 25-50 parts of a flocculating agent;
the flocculant comprises chitosan and/or polyacrylamide.
2. The phosphorus-fixing oxygen-releasing material as claimed in claim 1, which comprises the following components in parts by weight:
15-25 parts of calcium peroxide, 28-50 parts of a carrier, 30-36 parts of an embedding agent and 30-46 parts of a flocculating agent.
3. The phosphorus-fixing oxygen-releasing material of claim 1, wherein the carrier comprises at least one of kaolin, medical stone, attapulgite, expanded vermiculite and diatomite.
4. The phosphorus-fixing oxygen-releasing material as claimed in claim 3, wherein the carrier comprises kaolin and medical stone.
5. The phosphorus-fixing and oxygen-releasing material as claimed in claim 1, wherein the embedding agent comprises a polyvinyl alcohol solution;
preferably, the mass percentage of the polyvinyl alcohol in the polyvinyl alcohol solution is 8-15%.
6. The phosphorus-fixing oxygen-releasing material as claimed in claim 1, wherein the phosphorus-fixing oxygen-releasing material comprises the following components in parts by weight:
10-30 parts of calcium peroxide, 10-30 parts of kaolin, 15-25 parts of medical stone, 25-40 parts of polyvinyl alcohol solution, 20-30 parts of chitosan and 5-20 parts of polyacrylamide;
the mass percentage of polyvinyl alcohol in the polyvinyl alcohol solution is 8-15%.
7. The preparation method of the phosphorus-fixing oxygen-releasing material as claimed in any one of claims 1 to 6, comprising the following steps:
mixing and stirring calcium peroxide, a carrier, an embedding agent and a flocculating agent to obtain the phosphorus-fixing oxygen-releasing material.
8. The preparation method of the phosphorus-fixing oxygen-releasing material as claimed in claim 7, wherein the stirring time is 6-24 h;
preferably, the stirring time is 12 h.
9. A water body restoration method is characterized in that the phosphorus-fixing oxygen-releasing material of any one of claims 1 to 6 is adopted.
10. The water remediation method of claim 9 comprising the steps of:
applying a phosphorus-fixing oxygen-releasing material at the bottom of the water body, and planting vegetation for water body restoration;
preferably, the vegetation comprises tape grass.
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| CN113697923A (en) * | 2021-07-27 | 2021-11-26 | 陵水晨海种业有限公司 | Water quality improver for culture pond and preparation method thereof |
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Application publication date: 20200221 |