CN115771952A - Rare earth mineral substance phosphorus-fixing composite water purifying agent and application thereof - Google Patents
Rare earth mineral substance phosphorus-fixing composite water purifying agent and application thereof Download PDFInfo
- Publication number
- CN115771952A CN115771952A CN202310049321.XA CN202310049321A CN115771952A CN 115771952 A CN115771952 A CN 115771952A CN 202310049321 A CN202310049321 A CN 202310049321A CN 115771952 A CN115771952 A CN 115771952A
- Authority
- CN
- China
- Prior art keywords
- rare earth
- water
- phosphorus
- purifying agent
- earth mineral
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
Abstract
The invention discloses a rare earth mineral phosphorus fixation composite water purifying agent and application thereof, wherein the rare earth mineral phosphorus fixation composite water purifying agent comprises zeolite powder, kaolin, modified cellulose, calcium oxide, calcium peroxide and lanthanum oxide; the invention can be used for the rapid pollution treatment and water quality purification of rivers, lakes and other water bodies, and is particularly suitable for the rapid treatment of black and odorous water bodies and blue algae blooms.
Description
Technical Field
The invention relates to the field of ecological management, in particular to a rare earth mineral phosphorus-fixing composite water purifying agent and application thereof.
Background
At present, although certain effect is achieved in water environment treatment in China, the overall water environment quality is still at a lower level, a plurality of rivers and lakes are eutrophicated, and large-area blue algae outbreaks frequently occur.
The main reasons for the occurrence of blue algae outbreak in the water body are that the organic pollutants, total nitrogen and total phosphorus in the water body have high concentration, the dissolved oxygen value is lower, the water body is eutrophicated, and the blue algae outbreak and propagate under the external conditions of sufficient sunshine, increased water temperature and the like. There is therefore a need for effective degradation of the above mentioned pollutants in water, where in particular the degradation of total phosphorus is especially critical.
At present, at home and abroad, for the removal method of organic matters and total phosphorus in rivers and lakes, inorganic flocculating agents (such as polyaluminium chloride, polyferric sulfate and the like) are generally adopted to carry out flocculation and precipitation treatment on water bodies, and phosphorus and colloidal organic matters in the water bodies are subjected to flocculation and precipitation and transferred and deposited at the bottoms of the water bodies. The method can reduce colloid, suspended organic matter and total phosphorus in water, improve water transparency, and improve water quality. However, a large number of practices prove that the blue algae outbreak phenomenon still occurs in the water body treated by the method in 1-2 months in summer. Through sampling and testing the water body, under the condition that no external pollution source is converged into the water body, the concentration of organic matters and total phosphorus in the water body is still high.
The analysis shows that the main reasons for this phenomenon are: inorganic flocculant (such as polyaluminium chloride, polyferric sulfate, etc.) is used to perform flocculation and precipitation treatment on the water body, and phosphorus and colloid organic matters in the water body are subjected to flocculation and precipitation and transferred and deposited at the bottom of the water body. The treatment process is to transfer organic matters and phosphorus in the water body to the bottom of the water body through inorganic flocculant precipitation, after long-time soaking, the organic matters wrapped by the flocs are subjected to hydrolysis reaction under anaerobic conditions, and the organic matters and total phosphorus precipitated after the flocs are broken are released into the water body again to cause secondary pollution of the water body. Therefore, the traditional flocculation precipitation method cannot degrade organic matters and total phosphorus pollutants in the bottom sludge.
Disclosure of Invention
The invention aims to provide a rare earth mineral substance phosphorus-fixing composite water purifying agent aiming at the problems of incomplete and repeated water treatment in the conventional method for flocculating and precipitating water by using inorganic flocculating agents (such as polyaluminium chloride, polyferric sulfate and the like).
The invention also aims to provide a method for treating the ecological water body based on the rare earth mineral substance phosphorus-fixing composite water purifying agent, which can be used for rapid pollution treatment and water purification of water bodies such as rivers, lakes and the like, and is particularly suitable for rapid treatment of black and odorous water bodies and blue algae blooms.
In order to achieve the purpose, the invention adopts the following technical scheme:
a rare earth mineral phosphorus-fixing composite water purifying agent comprises zeolite powder, kaolin, a modified flocculant, calcium oxide, calcium peroxide and lanthanum oxide.
The zeolite powder in the invention is an aqueous alkali or alkaline earth metal aluminosilicate mineral, wherein clinoptilolite and mordenite are the most common.
The crystal structure of zeolite is a three-dimensional lattice formed by connecting silicon (aluminum) oxygen tetrahedrons, and the lattice has cavities and channels with different sizes and has great openness. The alkali metal or alkaline earth metal ions and water molecules are distributed in the cavities and the channels, and are weakly connected with the framework. Since there are also many water molecules in these cavities, they are hydrous minerals. In the invention, zeolite is baked for 4-6h at 750-800 ℃, water in cavities and channels is discharged, and then the zeolite is crushed and sieved to have the fineness of more than or equal to 325 meshes, and more preferably 325-500 meshes.
The kaolin in the invention is a non-metallic mineral product, takes kaolinite group clay as the main material, and is crushed and sieved to have the fineness of more than or equal to 325 meshes, and more preferably 325-500 meshes.
The flocculant in the invention is modified cellulose and/or modified starch, which is a natural organic polymer flocculant, and has the remarkable advantages of excellent flocculation property, environmental friendliness, safety, biodegradability, low price and the like, so that the flocculant is gradually applied to purification of a watershed water body. The fineness of the modified flocculant is more than or equal to 100 meshes. Preferably, the modified cellulose is a modified cellulose grafted polyamidine flocculant; the modified starch is at least one of phosphate starch, xanthate starch, acetate starch, oxidized starch and cross-linked starch.
The calcium oxide in the invention is an alkaline inorganic compound, commonly known as quicklime, and has hygroscopicity. The calcium oxide adopted by the invention is crushed and sieved, and the fineness is more than or equal to 325 meshes, and the preferable fineness is 325-500 meshes.
Lanthanum oxide in the present invention is an inorganic compound, which is a white powder, slightly soluble in water. The fineness of the lanthanum oxide adopted by the invention is more than or equal to 325 meshes, and the more preferable fineness is 325-500 meshes.
The calcium peroxide in the invention is an inorganic compound, is white or light yellow crystalline powder, is odorless and almost tasteless, and can be gradually and slowly decomposed in water to release oxygen for a long time. Because the calcium peroxide has the characteristic of releasing oxygen when meeting water, is non-toxic and does not pollute the environment, the calcium peroxide is an excellent oxygen supply agent with wide application, and the oxygen supply agent can be used for increasing oxygen in water bodies. The calcium oxide adopted by the invention is crushed and sieved, and the fineness is more than or equal to 325 meshes, and the preferable fineness is 325-500 meshes.
The rare earth mineral phosphorus-fixing composite water purifying agent mainly plays a role in purifying water quality through the comprehensive actions of phosphorus fixing of rare earth lanthanum oxide and calcium oxide, adsorption and purification of zeolite and kaolin, flocculation and precipitation purification of modified cellulose and oxygenation of calcium peroxide water.
The specific mechanism is as follows:
(1) The principle of dephosphorization and purification of water body is as follows: according to the phosphorus removal principle of the product, rare earth lanthanum oxide, calcium oxide and active phosphorus in water are subjected to chemical reaction, and the rare earth lanthanum oxide, calcium oxide and active phosphorus in water are converted into phosphate which is difficult to dissolve, so that the purpose of removing phosphorus in water is achieved. The method comprises the following specific steps:
(1) phosphorus removal of rare earth lanthanum elements:among rare earth elements, lanthanum is the most active rare earth element and can form chemically stable oxides. The rare earth lanthanum element can react with phosphate radical in water to generate inorganic lanthanum phosphate salt which is difficult to dissolve in water. Lanthanum oxide is hydrolyzed in aqueous solution to generate lanthanum hydroxide, and phosphate is subjected to chemical reaction mainly through the lanthanum hydroxide:
。
(2) and (3) calcium oxide dephosphorization: and removing soluble phosphate in the water through chemical reaction to reduce the total phosphorus in the water body.
The chemical reaction process is as follows:
firstly, calcium oxide reacts with water to generate calcium hydroxide, and the chemical reaction formula is as follows:
then, the calcium ions react with phosphate radicals in water to generate water-insoluble calcium phosphate,
the chemical reaction formula is
。
The two methods for removing the total phosphorus in the water body convert soluble phosphorus in the water body into insoluble phosphate through a chemical reaction process, the two materials complement each other to realize the purpose of removing the phosphorus in the water body and not releasing the phosphorus to the water body any more, and the process is called as 'phosphorus fixation' and plays an important role in preventing the blue algae in the water body from erupting.
(2) The water quality adsorption and purification function: the zeolite and kaolin have adsorbability and ion exchange performance, and can adsorb organic matters, ammonia nitrogen and heavy metal ions in water and adsorb and purify water. The zeolite can absorb ammonia nitrogen, organic matters and heavy metal ions in water, can effectively reduce the toxicity of hydrogen sulfide at the bottom of a water body, adjust the pH value, increase the dissolved oxygen in the water, provide sufficient carbon for the growth of phytoplankton and improve the photosynthesis intensity of the water body; kaolin can adsorb various ions and impurities from the surrounding medium and has ion exchange properties in aqueous solutions.
(3) Flocculation precipitation water purification effect: mainly through modified cellulose and modified starch, flocculation and sedimentation are generated in water, and the water quality purification is realized through the generated floccule sedimentation of suspension, colloid organic matters, algae and the like in the water. The main functions are as follows: the flocculant settling efficiency is extremely strong to various suspended particles in an aqueous solution medium, and particularly shows superiority to colloid solution particles with negative charges, and the excellent flocculant settling efficiency comprises the following three aspects: (1) the negatively charged aerosols lose their dispersion stability by electrical neutralization. (2) The sedimentation of the suspended particles is accelerated by the aggregation of the suspended particles into large particles through the bridging action, and the formed flocculation aggregate is more compact and firm. (3) Reacting with the negatively charged solute to produce insoluble precipitate.
(4) The calcium peroxide water body oxygenation function: the calcium peroxide is non-toxic, does not pollute the environment, can be slowly decomposed in water, has the characteristic of releasing oxygen, can release oxygen for a long time in the water, is an excellent oxygen supply agent with wide application, and can be used for increasing oxygen in water bodies.
Preferably, the rare earth mineral phosphorus-fixing composite water purifying agent comprises 40-50% of zeolite powder by weight percentage; specifically 40%, 41%, 42%, 43%, 44%, 45%, 46%, 47%, 48%, 49%, 50%, and any value between two adjacent numbers.
Preferably, the rare earth mineral phosphorus-fixing composite water purifying agent contains 15-22% of kaolin by weight percent; specifically 15%, 18%, 20%, 22% and any value between two adjacent numbers.
Preferably, the rare earth mineral phosphorus-fixing composite water purifying agent contains 15-25% of modified flocculant by weight percentage; specifically 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25% and any value between two adjacent numbers.
Preferably, in the rare earth mineral phosphorus-fixing composite water purifying agent, the calcium oxide is 8-13% by weight; specifically, the content is 8%, 9%, 10%, 11%, 12%, 13% and any value between two adjacent numbers.
Preferably, the rare earth mineral phosphorus-fixing composite water purifying agent contains 0.8-1.2% of lanthanum oxide by weight percentage; specifically, the content is 0.8%, 0.9%, 1%, 1.1%, 1.2%, and any value between two adjacent numbers.
Preferably, the rare earth mineral phosphorus-fixing composite water purifying agent contains 5-10% of calcium peroxide by weight percentage; specifically 5%, 6%, 7%, 8%, 9%, 10% and any value between two adjacent numbers.
Most preferably, the rare earth mineral phosphorus-fixing composite water purifying agent comprises 45% of zeolite powder, 20% of kaolin, 20% of modified flocculant, 9% of calcium oxide, 5% of calcium peroxide and 1% of lanthanum oxide by weight percentage.
The invention also provides a preparation method of the rare earth mineral phosphorus-fixing composite water purifying agent, which comprises the following steps: and mixing the zeolite powder, kaolin, a modified flocculant, calcium oxide, calcium peroxide and lanthanum oxide according to the formula ratio to obtain the rare earth mineral substance phosphorus fixation composite water purifying agent.
Preferably, the mixing time is 30min or more; further preferably 30 to 60min.
The invention also provides application of the rare earth mineral phosphorus-fixing composite water purifying agent in water environment treatment.
Preferably, the aquatic environment remediation comprises dissolved oxygen addition, organic matter removal, ammonia nitrogen and/or phosphorus removal.
The invention also provides a water body purification method, which comprises the following steps: and spraying the rare earth mineral phosphorus-fixing composite water purifying agent into the water body, and uniformly stirring.
The beneficial effects of the invention are as follows:
(1) The invention selects natural substances with the functions of adsorption, phosphorus fixation, flocculation precipitation and water oxygenation, combines the substances together according to a certain proportion, realizes the comprehensive purification function of the water and solves the problem of incomplete and easy repetition of the existing water treatment.
(2) The invention adopts rare earth lanthanum element and calcium ion to carry out chemical reaction with soluble phosphorus in water to generate phosphate which is difficult to dissolve, thereby realizing the conversion of phosphorus instead of simple transfer.
(3) The invention unexpectedly discovers that the zeolite powder modified by high-temperature baking is matched with kaolin, so that the zeolite powder has good effects of adsorbing ammonia nitrogen and heavy metal ions, can adjust the pH value, increases the dissolved oxygen in water, provides sufficient carbon for the growth of aquatic plants, improves the photosynthesis strength of a water body, and is beneficial to ecological restoration.
(4) The invention realizes the function of purifying the flocculating settling water body, adopts the natural modified cellulose and/or starch as the polymeric flocculant, and has the characteristics of no toxicity, safety, environmental protection, biodegradability and environmental protection.
(5) The calcium peroxide is slowly decomposed in water, has the characteristic of releasing oxygen, can release oxygen in water for a long time to realize oxygenation of a water body, prevents the water body from generating an anaerobic phenomenon due to insufficient dissolved oxygen, and effectively improves the quality of a water ecosystem.
Detailed Description
The following description of the embodiments is only intended to aid in the understanding of the method of the invention and its core ideas. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, it is possible to make various improvements and modifications to the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention. The following description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. Although any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention, the preferred methods and materials are now described.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The modified cellulose adopted in the invention is a modified cellulose grafted polyamidine flocculant which is purchased from Yueyueh organisms and has the particle size of 200 meshes.
Examples 1 to 6 rare earth mineral phosphorus-fixing composite Water purifying agent
The formulations of the rare earth mineral phosphorus-fixing composite water purifying agents of examples 1 to 6 are shown in Table 1.
TABLE 1 formulation of rare earth mineral phosphorus-fixing composite water purifying agent of examples 1-6 (unit: weight percent)
The preparation method of the rare earth mineral phosphorus-fixing composite water purifying agent comprises the following steps: and sequentially adding zeolite powder, kaolin, modified cellulose, calcium oxide, calcium peroxide and lanthanum oxide according to the formula ratio into a horizontal spiral belt powder mixer, mixing for 60min, and uniformly mixing to obtain the rare earth mineral substance phosphorus-fixing composite water purifying agent.
Comparative example: rare earth mineral phosphorus-fixing composite water purifying agent
This comparative example differs from example 1 in that: according to weight percentage, 35 percent of zeolite powder, 30 percent of kaolin, 20 percent of modified cellulose, 9 percent of calcium oxide, 5 percent of calcium peroxide and 1 percent of lanthanum oxide, and the zeolite powder is not baked at 750-800 ℃.
The preparation method is the same as example 1.
1. Laboratory effect verification
1. The experimental method comprises the following steps:
(1) In the east water system river channel of Dongying City, 10L of experimental water sample is optionally taken from one section. And detect water quality data before the experiment, main detection items include: pH, dissolved oxygen, COD, potassium permanganate index, ammonia nitrogen, total phosphorus and turbidity;
(2) Respectively taking 1L of 7 experimental water samples, and respectively placing the experimental water samples in 7 1000ml beakers to mark No. 1-7 for later use;
(3) Weighing 1g of each rare earth mineral phosphorus-fixing composite water purifying agent according to the formulas of the rare earth mineral phosphorus-fixing composite water purifying agents of the embodiments 1-6 and the comparative example, respectively adding the weighed materials into a beaker water sample according to the corresponding beaker labels, and manually stirring for 1 minute to fully mix the added experimental sample with the experimental water sample, and standing for 10 minutes after mixing;
(4) Taking 100ml of supernatant in 7 beakers respectively, and carrying out data detection after experiments, wherein the main detection items comprise: pH, dissolved oxygen, COD, potassium permanganate index, ammonia nitrogen, total phosphorus and turbidity.
2. Experimental data of examination
As can be seen from table 2, the rare earth mineral phosphorus-fixing composite water purifying agent provided in embodiments 1 to 6 of the present invention can adjust the pH of a water body, effectively reduce the turbidity of the water body and increase the dissolved oxygen in the water, and has better effects of fixing phosphorus, removing ammonia nitrogen and organic matters, etc. The data in example 1 are relatively balanced, and the effect of removing the main pollutants is better.
Meanwhile, as can be seen from comparison of the comparative example and example 1, the zeolite powder modified by high-temperature baking and the kaolin are matched, so that the zeolite powder has a good ammonia nitrogen adsorption effect and can increase dissolved oxygen.
Table 2 water sample quality data
2. Engineering verification
In 8 months in 2022, in an east water system in Dongying City, 100-meter long river reach sections adjacent to the upstream and the downstream are respectively selected, and a river water purification effect comparison experiment for 30 days is carried out by respectively adopting conventional polyaluminum chloride and the rare earth mineral phosphorus-fixing composite water purifying agent prepared in the embodiment 1 of the invention, wherein the experimental conditions are as follows:
1. the river channel condition: the length of each of the two sections of riverways is 100 meters, the average width is 18 meters, the average water depth is 1 meter, the water body is in a non-flowing state, and the water storage amount of each section is about 1800m 3 。
2. The water quality condition is as follows: the water quality of the two sections of river water bodies blackens, has peculiar smell and large-area blue algae, and water sample detection data are shown in the following table 3.
TABLE 3 engineering water sample testing data
3. And (3) comparing the experimental processes:
(1) In a selected section of river channel experimental section (hereinafter referred to as a conventional method experimental section), a 10% polyaluminium chloride (PAC) solution is uniformly sprayed into the section of water body, and the concentration of the PAC solution is 1000g/m PAC 3 The total dosage of PAC is 1800kg.
(2) In a section of selected river channel experimental section (hereinafter referred to as rare earth phosphorus fixation experimental section), uniformly spraying 10% concentration rare earth mineral phosphorus fixation composite water purifying agent suspension into the section of water body, and uniformly spraying the suspension according to the concentration of 1000g/m 3 The total dosage of the rare earth mineral substance phosphorus-fixing composite water purifying agent is 1800kg.
4. The comparative experiment results are as follows:
(1) In the conventional method test section, after the water body is treated and purified, the water quality change condition is as follows within 30 days:
in the first week, the water body is clear, the visibility is 1 m, the blue algae outbreak phenomenon is avoided, and the water body has peculiar smell.
In the second week, the water body is clear, the visibility is 0.6 m, the blue algae outbreak phenomenon does not exist, and the water body has peculiar smell.
In the third week, the water body is cloudy, the visibility is 0.3 m, the blue algae outbreak phenomenon in a small area exists, and the water body has peculiar smell.
And in the fourth period, the water body is cloudy, the visibility is 0.2 m, a large-area blue-green algae outbreak phenomenon exists, and the water body has a thick and heavy peculiar smell.
The water quality testing data in the test section of the conventional method are shown in the following table 4.
TABLE 4 Water quality testing data of the test section of the conventional method
As can be seen from the above table, in the first week after the addition of the conventional flocculant, the water quality detection indexes such as dissolved oxygen, COD, potassium permanganate index, ammonia nitrogen, total phosphorus and turbidity are obviously changed, and except ammonia nitrogen, the indexes all reach the discharge standard. But the detection index slowly rises after the second week, only the potassium permanganate index reaches the discharge standard, and the water quality detection index has no obvious change with the data before purification and the dissolved oxygen is not obviously improved until the third week and the fourth week, so that the five standards of surface water can not be reached. The conventional flocculation treatment method is unstable in effect and easy to repeat.
(2) In the rare earth phosphorus fixation test section, after water body treatment and purification, the water quality change condition is 30 days:
in the first week, the water body is clear, the visibility is 1 m, the blue algae outbreak phenomenon does not occur, and the water body does not have peculiar smell.
In the second week, the water body is clear, the visibility is 0.9 m, the blue algae outbreak phenomenon does not exist, and the water body does not have peculiar smell.
In the third week, the water body is clear, the visibility is 0.9 m, the blue algae outbreak phenomenon does not exist, and the water body does not have peculiar smell.
And in the fourth period, the water body is clear, the visibility is 0.7 m, the blue algae outbreak phenomenon does not exist, and the water body has no peculiar smell.
The water quality detection data of the rare earth phosphorus fixation test section are shown in the following table 5.
TABLE 5 Water quality testing data of rare earth phosphorus fixation test section
As can be seen from the above table, in the first week after the rare earth mineral substance phosphorus-fixing composite water purifying agent is added, the water quality detection indexes such as dissolved oxygen, COD, potassium permanganate index, ammonia nitrogen, total phosphorus and turbidity are obviously improved, and the five standards of surface water are achieved. Meanwhile, in the following second week to four weeks, the other detection indexes are basically unchanged except for the reduction of the dissolved oxygen. The rare earth mineral phosphorus-fixing composite water purifying agent has stable purifying effect and no repeated phenomenon.
The present invention is further described with reference to specific embodiments, which are only exemplary and do not limit the scope of the present invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and substitutions are intended to be within the scope of the invention.
Claims (9)
1. The rare earth mineral phosphorus-fixing composite water purifying agent is characterized by comprising zeolite powder, kaolin, a modified flocculating agent, calcium oxide, calcium peroxide and lanthanum oxide, wherein the zeolite powder is subjected to baking modification treatment at the temperature of 750-800 ℃.
2. The rare earth mineral phosphorus-fixing composite water purifying agent as claimed in claim 1, wherein the fineness of the zeolite powder is more than 325 meshes; the fineness of the kaolin is more than 325 meshes; the fineness of the modified cellulose is more than 100 meshes; the fineness of the calcium oxide is more than 325 meshes.
3. The rare earth mineral phosphorus fixation composite water purifying agent as claimed in claim 1, which comprises, by weight, 40-50% of zeolite powder, 15-22% of kaolin, 15-25% of modified flocculant, 8-13% of calcium oxide, 5-10% of calcium peroxide and 0.8-1.2% of lanthanum oxide.
4. The rare earth mineral phosphorus-fixing composite water purifying agent according to claim 3, characterized by comprising 45% of zeolite powder, 20% of kaolin, 20% of modified flocculant, 9% of calcium oxide, 5% of calcium peroxide and 1% of lanthanum oxide by weight percentage.
5. The preparation method of the rare earth mineral phosphorus-fixing composite water purifying agent of any one of claims 1 to 4 is characterized by comprising the following steps: and mixing the zeolite powder, kaolin, a modified flocculant, calcium oxide, calcium peroxide and lanthanum oxide according to the formula ratio to obtain the rare earth mineral substance phosphorus fixation composite water purifying agent.
6. The method according to claim 5, wherein the mixing time is 30min or more.
7. The use of the rare earth mineral phosphorus-fixing composite water purifying agent of any one of claims 1 to 4 in water environmental treatment.
8. The use of claim 7, wherein the aquatic environment remediation comprises dissolved oxygen enhancement, organic matter removal, ammonia nitrogen removal, and/or phosphorus removal.
9. A water body purification method is characterized by comprising the following steps: spraying the rare earth mineral phosphorus-fixing composite water purifying agent as defined in any one of claims 1-4 into water body, and stirring uniformly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310049321.XA CN115771952B (en) | 2023-02-01 | 2023-02-01 | Rare earth mineral phosphorus fixation composite water purifying agent and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310049321.XA CN115771952B (en) | 2023-02-01 | 2023-02-01 | Rare earth mineral phosphorus fixation composite water purifying agent and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115771952A true CN115771952A (en) | 2023-03-10 |
| CN115771952B CN115771952B (en) | 2023-05-23 |
Family
ID=85393405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310049321.XA Active CN115771952B (en) | 2023-02-01 | 2023-02-01 | Rare earth mineral phosphorus fixation composite water purifying agent and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115771952B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007028288A1 (en) * | 2005-09-05 | 2007-03-15 | Research Center For Eco-Environmental Sciences, The Chinese Academy Of Sciences | A composite for removing water bloom converted to sinking vegetation and the treatment method using thereof |
| WO2008096988A1 (en) * | 2007-02-05 | 2008-08-14 | Enbio 21 Co., Ltd. | Chemical reagent for the purpose of simultaneous treatment of n, p and microalgae for prevention eutrophication of water bodies |
| CN101544412A (en) * | 2009-05-11 | 2009-09-30 | 浙江皇冠科技有限公司 | Aquaculture water purifying agent and preparation method thereof |
| CN102351292A (en) * | 2011-07-21 | 2012-02-15 | 浙江商达环保有限公司 | Biologically active flocculating agent for treating waste water generated in production of vitamin E and preparation method thereof |
| CN106698548A (en) * | 2017-01-14 | 2017-05-24 | 冯志祥 | High-efficient phosphate removing agent and preparation method thereof |
| CN106830160A (en) * | 2017-01-14 | 2017-06-13 | 冯志祥 | A kind of dephosphorization denitrogenation synthesis agent and preparation method thereof |
| CN111170400A (en) * | 2020-01-16 | 2020-05-19 | 深圳市深港产学研环保工程技术股份有限公司 | Water quality substrate modifying agent, preparation method thereof and water quality substrate modifying method |
| CN115490340A (en) * | 2022-05-16 | 2022-12-20 | 华中科技大学 | Nitrogen, phosphorus and algae removal agent and preparation method and application thereof |
-
2023
- 2023-02-01 CN CN202310049321.XA patent/CN115771952B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007028288A1 (en) * | 2005-09-05 | 2007-03-15 | Research Center For Eco-Environmental Sciences, The Chinese Academy Of Sciences | A composite for removing water bloom converted to sinking vegetation and the treatment method using thereof |
| WO2008096988A1 (en) * | 2007-02-05 | 2008-08-14 | Enbio 21 Co., Ltd. | Chemical reagent for the purpose of simultaneous treatment of n, p and microalgae for prevention eutrophication of water bodies |
| CN101544412A (en) * | 2009-05-11 | 2009-09-30 | 浙江皇冠科技有限公司 | Aquaculture water purifying agent and preparation method thereof |
| CN102351292A (en) * | 2011-07-21 | 2012-02-15 | 浙江商达环保有限公司 | Biologically active flocculating agent for treating waste water generated in production of vitamin E and preparation method thereof |
| CN106698548A (en) * | 2017-01-14 | 2017-05-24 | 冯志祥 | High-efficient phosphate removing agent and preparation method thereof |
| CN106830160A (en) * | 2017-01-14 | 2017-06-13 | 冯志祥 | A kind of dephosphorization denitrogenation synthesis agent and preparation method thereof |
| CN111170400A (en) * | 2020-01-16 | 2020-05-19 | 深圳市深港产学研环保工程技术股份有限公司 | Water quality substrate modifying agent, preparation method thereof and water quality substrate modifying method |
| CN115490340A (en) * | 2022-05-16 | 2022-12-20 | 华中科技大学 | Nitrogen, phosphorus and algae removal agent and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115771952B (en) | 2023-05-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109292933B (en) | COD (chemical oxygen demand) remover with oxidation and flocculation combined function for sewage treatment | |
| CN102259963A (en) | Polymeric magnesium silicate-sulfate composite flocculant | |
| CN103351046B (en) | Wastewater treatment agent, preparation method thereof and wastewater treatment method | |
| WO2020010678A1 (en) | Novel material for in-situ decontamination of turbid river water and preparation method thereof | |
| CN104261530A (en) | Dephosphorization flocculating agent and preparation method thereof | |
| CN113697917B (en) | Natural material composite flocculant and preparation method and application thereof | |
| CN111170400A (en) | Water quality substrate modifying agent, preparation method thereof and water quality substrate modifying method | |
| CN102757119A (en) | Preparation method of composite type inorganic polymeric flocculating agent and application thereof | |
| CN111484115A (en) | Novel sewage phosphorus removal agent and preparation and application methods thereof | |
| CN102963983A (en) | Vertical flow artificial wetland substrate modified based on LDHs (layered double hydroxides) coating film and preparation method of substrate | |
| CN113104900A (en) | Composite polyaluminum ferric chloride flocculating dephosphorization agent and preparation method thereof | |
| CN102311160A (en) | Water purifying agent for aquaculture pool | |
| CN115771952B (en) | Rare earth mineral phosphorus fixation composite water purifying agent and application thereof | |
| CN108622951A (en) | A kind of green medicament in quick reparation river | |
| CN110606577A (en) | Composite phosphorus and nitrogen removing agent and preparation method thereof | |
| CN111484146A (en) | Chelating agent for removing heavy metal pollution from water body and preparation method and application thereof | |
| CN113636631B (en) | Composite water quality agglutination purifying agent and preparation method thereof | |
| CN114368816A (en) | Natural polymer algaecide and application thereof | |
| JPS61133140A (en) | Composition for purifying water | |
| CN111908619A (en) | Efficient biochemical combined composite phosphorus removal agent and preparation method thereof | |
| CN112794416A (en) | Flocculation-adsorption reagent and method for synchronously removing turbidity, ammonia nitrogen and TP in black and odorous water body | |
| CN113526636A (en) | Efficient sewage treatment medicament and preparation method thereof | |
| CN112607841A (en) | Efficient sewage treatment additive and preparation method thereof | |
| CN112320914B (en) | Phosphorus removal agent with composite function and phosphorus removal method | |
| CN111115846A (en) | Sewage treatment agent for aquaculture wastewater and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |