CN113321279A - Modified diatomite composite magnetic flocculant and preparation method and application thereof - Google Patents
Modified diatomite composite magnetic flocculant and preparation method and application thereof Download PDFInfo
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- CN113321279A CN113321279A CN202110503814.7A CN202110503814A CN113321279A CN 113321279 A CN113321279 A CN 113321279A CN 202110503814 A CN202110503814 A CN 202110503814A CN 113321279 A CN113321279 A CN 113321279A
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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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Abstract
The invention discloses a modified diatomite compound magnetic flocculant which is prepared from diatomite, magnetic powder, polyaluminium chloride and concentrated hydrochloric acid through the steps of screening, acid modification, mixing, grinding, drying and the like. The magnetic flocculant of the invention takes diatomite as a main raw material, takes polyaluminium chloride and magnetic powder as auxiliary materials, and obtains the magnetic composite high-performance inorganic flocculant after series of operations such as screening, acid modification, mixing, grinding, drying and the like.
Description
Technical Field
The invention belongs to the field of environmental engineering water treatment, and particularly relates to a modified diatomite composite magnetic flocculant and a preparation method and application thereof.
Background
The diatomite is a siliceous rock and is mainly distributed in China, America, Japan, Denmark, France, Romania and other countries, the reserve of the diatomite in China is 3.2 hundred million tons, the reserve of the prospect reaches more than 20 hundred million tons, and the reserve is rich. The diatomite is used as a coagulant aid to participate in the sewage flocculation treatment process, and can be fully dispersed into diatomite monomers by stirring and suspended in the sewage, so that the diatomite monomers can quickly adsorb flocculation substances and form a core body, and then the diatomite is precipitated by the weight of the diatomite. The diatomite also has strong adsorbability, and can effectively adsorb organic compounds, high molecular polymers, proteins, metal ions and the like.
Magnetic flocculation-magnetic separation is to separate or remove pollutants in water by the action of a magnetic field after a magnetic carrier is added and the pollutants are combined, and a magnetic separation method is an emerging water treatment technology in recent years. Magnetic separation has achieved many successful applications in water treatment as a physical treatment technique, showing many advantages. Compared with conventional methods such as sedimentation and filtration, the magnetic separation method has a series of advantages of large treatment capacity, high efficiency, low energy consumption, simple and compact equipment and the like, not only has been successfully applied to the purification of blast furnace gas washing water, steelmaking smoke dust purification wastewater, steel rolling wastewater and sintering wastewater, but also has development prospect in the purification of other industrial wastewater, urban sewage and cyanobacterial bloom. However, the application of the magnetic flocculant is difficult to remove most of ions and small molecular organic matters, and the sewage separation effect is limited, so that a diatomite composite magnetic flocculant is required to be provided to solve the defects of secondary separation.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provide a modified diatomite composite magnetic flocculant, which can effectively improve the sewage separation effect through the mutual synergistic effect of diatomite, polyaluminium chloride and magnetic powder.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
a preparation method of a modified diatomite composite magnetic flocculant comprises the following steps:
s1, taking diatomite and magnetic powder, screening by using a screen, mixing the sieved diatomite and magnetic powder according to the mass ratio of 1:1-5:1, mixing and stirring for 10-15min to obtain an original diatomite mixture, wherein the screening aims to remove impurities and large granular substances which are difficult to be completely acidified, the magnetic powder is added to introduce iron ions, and a large amount of high-charge polymeric cations can be formed after the diatomite and the magnetic powder are dissolved in water to increase the flocculation effect;
s2, taking concentrated hydrochloric acid, adding the concentrated hydrochloric acid to the original diatomite mixture obtained in the step S1, wherein the mass ratio of the original diatomite mixture to the concentrated hydrochloric acid is 4:1-8:1, the concentrated hydrochloric acid is slowly added when the hydrochloric acid is added, the mixture is continuously stirred when the concentrated hydrochloric acid is added, and after the mixture is stirred and reacts for a period of time, the modified diatomite mixture is obtained, the diatomite acid modification aims to increase the pore volume and the specific surface area by utilizing the etching effect of strong acid, improve the pore structure of the diatomite and the surface adsorption performance of the diatomite, and the concentrated hydrochloric acid is slowly added so as to ensure that the diatomite is uniformly contacted with the concentrated hydrochloric acid and simultaneously reduce the agglomeration phenomenon in the diatomite acidification process;
s3, mixing polyaluminium chloride and the magnetic powder with the modified diatomite mixture obtained in the step S2, wherein the mass ratio of the polyaluminium chloride to the magnetic powder to the modified diatomite mixture is 1:1:1, and mixing and stirring for 10-15min to obtain a modified diatomite composite magnetic flocculant semi-finished product;
and S4, grinding, drying and screening the semi-finished product obtained in the step S3 to obtain a finished product of the modified diatomite composite magnetic flocculant.
Further, the fineness of the sieved diatomite and magnetic powder in the step S1 is 200-400 meshes.
Further, the iron powder in step S1 and step S3 is magnetite, and the main component is ferroferric oxide.
Further, the stirring reaction time in the step S2 is 10 to 30min, and the concentration of the concentrated hydrochloric acid is 20 to 30%.
Furthermore, the polyaluminium chloride prepared by the spraying method has the alumina content of 20-29 percent, and is prepared by the polyaluminium chloride prepared by the step S3, the polyaluminium chloride prepared by the spraying method has wide adaptive water area, high hydrolysis speed, strong adsorption capacity, large formed alumen ustum, high dense sediment speed, low effluent turbidity and good dehydration performance.
Further, the drying temperature in the step S4 is 200-300 ℃, the drying time is 10-15min, and the fineness of the screened finished product is 80-200 meshes.
A modified diatomite composite magnetic flocculant is prepared by the preparation method of the modified diatomite composite magnetic flocculant.
An application of the modified diatomite composite magnetic flocculant in the separation treatment of sewage, blue algae and algae.
Further, the magnetic flocculant is put into the sewage to be treated, the input amount of the magnetic flocculant is 150-.
Further, a magnetic flocculant is put into the blue algae water to be treated, the input amount of the magnetic flocculant is 200-.
The invention has the beneficial effects that:
the magnetic flocculant of the invention takes diatomite as a main raw material, takes polyaluminium chloride and magnetic powder as auxiliary materials, and obtains the magnetic composite high-performance inorganic flocculant after series of operations such as screening, acid modification, mixing, grinding, drying and the like.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a flow chart of the preparation method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The preparation method of the modified diatomite composite magnetic flocculant shown in figure 1 comprises the following steps:
s1, taking diatomite and magnetic powder, screening by using a 200-mesh screen, mixing the screened diatomite 50KG and magnetic powder 50KG, mixing and stirring for 15min to obtain an original diatomite mixture, wherein the screening aims to remove impurities and large granular substances which are difficult to be completely acidified, the magnetic powder is added to introduce iron ions, and a large amount of high-charge polymeric cations are formed after the diatomite and the magnetic powder are dissolved in water to increase the flocculation effect;
s2, adding 20% concentrated hydrochloric acid 25KG into the original diatomite mixture obtained in the step S1, slowly adding hydrochloric acid when adding hydrochloric acid, continuously stirring the mixture when adding hydrochloric acid, and stirring for reacting for 30min to obtain a modified diatomite mixture, wherein the purpose of diatomite acid modification is to increase the pore volume and the specific surface area of the diatomite by utilizing the etching effect of strong acid, improve the pore structure of the diatomite and the surface adsorption performance of the diatomite, and the purpose of slowly adding concentrated hydrochloric acid is to ensure that the diatomite is uniformly contacted with the concentrated hydrochloric acid and simultaneously reduce the agglomeration phenomenon in the diatomite acidification process;
s3, mixing polyaluminum chloride 125KG and magnetic powder 125KG with the modified diatomite mixture obtained in the step S2, and stirring for 15min to obtain a modified diatomite composite magnetic flocculant semi-finished product;
and S4, grinding, drying and screening the semi-finished product obtained in the step S3 to obtain a finished product of the modified diatomite composite magnetic flocculant, wherein the drying temperature is 200 ℃, the drying time is 15min, and the fineness of the screened finished product is 200 meshes.
And (2) putting the magnetic flocculant obtained in the step into the sewage to be treated, wherein the input amount of the magnetic flocculant is 200mg/L, quickly stirring for 3min and slowly stirring for 20min, removing sewage flocs through a floc magnetic separator, wherein the magnetic field intensity of the floc magnetic separator is 2500GS, and calculating the solid suspended matter removal rate and the COD removal rate of the treated sewage, wherein the calculation results are shown in Table 1.
And (3) putting the magnetic flocculant obtained in the step into the blue algae water to be treated, wherein the input amount of the magnetic flocculant is 250mg/L, quickly stirring for 5min and slowly stirring for 30min, removing blue algae flocs through a floc magnetic separator, wherein the magnetic field intensity of the floc magnetic separator is 3000GS, calculating the chlorophyll removal rate and the COD removal rate of the treated blue algae water, and the calculation result is shown in table 2.
Example 2
The preparation method of the modified diatomite composite magnetic flocculant shown in figure 1 comprises the following steps:
s1, taking diatomite and magnetic powder, screening by using a 400-mesh screen, mixing the screened diatomite 50KG and magnetic powder 25KG, mixing and stirring for 13min to obtain an original diatomite mixture, wherein the screening aims to remove impurities and large granular substances which are difficult to be completely acidified, the magnetic powder is added to introduce iron ions, and a large amount of high-charge polymeric cations are formed after the diatomite and the magnetic powder are dissolved in water to increase the flocculation effect;
s2, adding 25% concentrated hydrochloric acid 15KG into the original diatomite mixture obtained in the step S1, slowly adding the hydrochloric acid when adding the hydrochloric acid, continuously stirring the mixture when adding the hydrochloric acid, and stirring and reacting for 20min to obtain a modified diatomite mixture, wherein the purpose of diatomite acid modification is to increase the pore volume and the specific surface area of the diatomite by utilizing the etching effect of strong acid, improve the pore structure of the diatomite and the surface adsorption performance of the diatomite, and the purpose of slowly adding concentrated hydrochloric acid is to ensure that the diatomite is uniformly contacted with the concentrated hydrochloric acid and simultaneously reduce the agglomeration phenomenon in the diatomite acidification process;
s3, mixing the polyaluminum chloride 90KG and the magnetic powder 90KG with the modified diatomite mixture obtained in the step S2, and stirring for 13min to obtain a modified diatomite composite magnetic flocculant semi-finished product;
and S4, grinding, drying and screening the semi-finished product obtained in the step S3 to obtain a finished product of the modified diatomite composite magnetic flocculant, wherein the drying temperature is 250 ℃, the drying time is 12min, and the fineness of the screened finished product is 100 meshes.
And (2) putting the magnetic flocculant obtained in the step into the sewage to be treated, wherein the input amount of the magnetic flocculant is 150mg/L, quickly stirring for 1min and slowly stirring for 10min, removing sewage flocs through a floc magnetic separator, wherein the magnetic field intensity of the floc magnetic separator is 2000GS, and calculating the solid suspended matter removal rate and the COD removal rate of the treated sewage, wherein the calculation results are shown in Table 1.
And (3) putting the magnetic flocculant obtained in the step into the blue algae water to be treated, wherein the input amount of the magnetic flocculant is 200mg/L, quickly stirring for 3min and slowly stirring for 15min, removing blue algae flocs through a floc magnetic separator, wherein the magnetic field intensity of the floc magnetic separator is 2500GS, calculating the chlorophyll removal rate and the COD removal rate of the treated blue algae water, and the calculation result is shown in table 2.
Example 3
The preparation method of the modified diatomite composite magnetic flocculant shown in figure 1 comprises the following steps:
s1, taking diatomite and magnetic powder, screening by using a 300-mesh screen, mixing the screened diatomite 50KG and magnetic powder 10KG, mixing and stirring for 10min to obtain an original diatomite mixture, wherein the screening purpose is to remove impurities and large granular substances which are difficult to be completely acidified, the magnetic powder is added to introduce iron ions, and a large amount of high-charge polymeric cations are formed after the diatomite and the magnetic powder are dissolved in water to increase the flocculation effect;
s2, adding 7.5KG concentrated hydrochloric acid with the concentration of 30% into the original diatomite mixture obtained in the step S1, slowly adding the concentrated hydrochloric acid when adding hydrochloric acid, continuously stirring the mixture when adding the hydrochloric acid, and stirring and reacting for 10min to obtain a modified diatomite mixture, wherein the purpose of diatomite acid modification is to increase the pore volume and the specific surface area of the diatomite by utilizing the etching effect of strong acid, improve the pore structure of the diatomite and improve the surface adsorption performance of the diatomite, and the purpose of slowly adding concentrated hydrochloric acid is to ensure that the diatomite is uniformly contacted with the concentrated hydrochloric acid and simultaneously reduce the agglomeration phenomenon in the process of diatomite acidification;
s3, mixing 67.5KG of polyaluminum chloride, 67.5KG of magnetic powder and the modified diatomite mixture obtained in the step S2, and stirring for 10min to obtain a modified diatomite composite magnetic flocculant semi-finished product;
and S4, grinding, drying and screening the semi-finished product obtained in the step S3 to obtain a finished product of the modified diatomite composite magnetic flocculant, wherein the drying temperature is 300 ℃, the drying time is 10min, and the fineness of the screened finished product is 80 meshes.
And (3) putting the magnetic flocculant obtained in the step into the sewage to be treated, wherein the input amount of the magnetic flocculant is 170mg/L, quickly stirring for 2min and slowly stirring for 15min, removing sewage flocs through a floc magnetic separator, wherein the magnetic field intensity of the floc magnetic separator is 2300GS, and calculating the solid suspended matter removal rate and the COD removal rate of the treated sewage, wherein the calculation results are shown in Table 1.
And (3) putting the magnetic flocculant obtained in the step into the blue algae water to be treated, wherein the input amount of the magnetic flocculant is 230mg/L, quickly stirring for 4min and slowly stirring for 20min, removing blue algae flocs through a floc magnetic separator, wherein the magnetic field intensity of the floc magnetic separator is 2700GS, calculating the chlorophyll removal rate and the COD removal rate of the treated blue algae water, and the calculation result is shown in Table 2.
TABLE 1
| Example 1 | Example 2 | Example 3 | |
| Percent removal of solid suspensions/%) | 90 | 94 | 92 |
| COD removal Rate/%) | 84 | 90 | 86 |
TABLE 2
| Example 1 | Example 2 | Example 3 | |
| Chlorophyll removal rate/%) | 90 | 94 | 90 |
| COD removal Rate/%) | 86 | 91 | 89 |
As can be seen from tables 1 and 2, when the magnetic flocculant prepared by the preparation method disclosed by the invention is used for treating sewage and cyanobacteria algae water, the average removal rate of suspended solids in the sewage reaches 92%, the average removal rate of COD in the sewage reaches 87%, the average removal rate of chlorophyll in the cyanobacteria algae water reaches 91%, and the average removal rate of COD in the cyanobacteria algae water reaches 89%, so that the magnetic flocculant disclosed by the invention can be used for effectively separating and treating the sewage and the cyanobacteria algae water.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (10)
1. A preparation method of a modified diatomite composite magnetic flocculant is characterized by comprising the following steps:
s1, taking the diatomite and the magnetic powder, screening by using a screen, mixing the screened diatomite and the magnetic powder according to the mass ratio of 1:1-5:1, and mixing and stirring for 10-15min to obtain an original diatomite mixture;
s2, taking concentrated hydrochloric acid, adding the concentrated hydrochloric acid to the original diatomite mixture obtained in the step S1, wherein the mass ratio of the original diatomite mixture to the concentrated hydrochloric acid is 4:1-8:1, the concentrated hydrochloric acid is slowly added when the hydrochloric acid is added, the mixture is continuously stirred when the concentrated hydrochloric acid is added, and the modified diatomite mixture is obtained after the concentrated hydrochloric acid is stirred and reacts for a period of time;
s3, mixing polyaluminium chloride and the magnetic powder with the modified diatomite mixture obtained in the step S2, wherein the mass ratio of the polyaluminium chloride to the magnetic powder to the modified diatomite mixture is 1:1:1, and mixing and stirring for 10-15min to obtain a modified diatomite composite magnetic flocculant semi-finished product;
and S4, grinding, drying and screening the semi-finished product obtained in the step S3 to obtain a finished product of the modified diatomite composite magnetic flocculant.
2. The preparation method of the modified diatomite composite magnetic flocculant according to claim 1, characterized in that: the fineness of the sieved diatomite and magnetic powder in the step S1 is 200-400 meshes.
3. The preparation method of the modified diatomite composite magnetic flocculant according to claim 1, characterized in that: the iron powder in step S1 and step S3 is magnetite, and the main component is ferroferric oxide.
4. The preparation method of the modified diatomite composite magnetic flocculant according to claim 1, characterized in that: the stirring reaction time in the step S2 is 10-30min, and the concentration of concentrated hydrochloric acid is 20-30%.
5. The preparation method of the modified diatomite composite magnetic flocculant according to claim 1, characterized in that: the polyaluminium chloride obtained in the step S3 has an alumina content of 20-29% and is prepared by a spraying method.
6. The preparation method of the modified diatomite composite magnetic flocculant according to claim 1, characterized in that: the drying temperature in the step S4 is 200-300 ℃, the drying time is 10-15min, and the fineness of the screened finished product is 80-200 meshes.
7. The modified diatomite compound magnetic flocculant is characterized in that: the modified diatomite composite magnetic flocculant of claim 1-6 is prepared by the preparation method.
8. The application of the modified diatomite composite magnetic flocculant of claim 7 in sewage and cyanobacteria-algae water separation treatment.
9. The application of the modified diatomite composite magnetic flocculant in sewage separation treatment according to claim 8 is characterized in that: and (3) putting the magnetic flocculant into the sewage to be treated, wherein the input amount of the magnetic flocculant is 150-.
10. The application of the modified diatomite composite magnetic flocculant in the blue algae-algae water separation treatment according to claim 8 is characterized in that: and (3) putting the magnetic flocculant into the blue algae water to be treated, wherein the input amount of the magnetic flocculant is 200-3000 mg/L, quickly stirring for 3-5min, slowly stirring for 15-30min, removing the blue algae flocs through a floc magnetic separator, and the magnetic field intensity of the floc magnetic separator is 2500-3000 GS.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113955895A (en) * | 2021-10-29 | 2022-01-21 | 安徽雷克环境科技有限公司 | Magnetic capture purification method for high-concentration algae water |
| CN114314780A (en) * | 2021-12-08 | 2022-04-12 | 重庆大学 | Application of diatomite-loaded magnetic nickel-iron layered double hydroxide as blue algae flocculant |
| CN114735795A (en) * | 2022-04-29 | 2022-07-12 | 扬州工业职业技术学院 | Sodium alginate-diatomite composite magnetic flocculant and preparation method thereof |
| CN114751597A (en) * | 2022-04-29 | 2022-07-15 | 扬州工业职业技术学院 | Water treatment process based on composite magnetic flocculant |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182512A (en) * | 2007-08-01 | 2008-05-21 | 江苏省嘉庆水务发展有限公司 | Biology diatom water treatment agent and method of producing the same |
| CN102838195A (en) * | 2012-09-14 | 2012-12-26 | 大连格兰清水环境工程有限公司 | Composite flocculant for sewage treatment |
| JP5501544B1 (en) * | 2014-01-30 | 2014-05-21 | 株式会社テクノス北海道 | Flocculant for wastewater treatment |
| CN104478054A (en) * | 2014-12-15 | 2015-04-01 | 石轩 | Compound diatomite flocculating agent and preparation method thereof |
| CN105967291A (en) * | 2016-05-10 | 2016-09-28 | 湖州国盛环保工程有限公司 | Flocculating agent for ecological remediation of black smelly surface water and production process thereof |
| CN107029661A (en) * | 2016-12-17 | 2017-08-11 | 安徽师范大学 | A kind of diatomite/poly aluminium iron silicate composite adsorbing material, preparation method and applications |
| CN110614077A (en) * | 2019-11-05 | 2019-12-27 | 云南新祥绿环境科技有限公司 | Diatomite sewage treatment agent |
-
2021
- 2021-05-10 CN CN202110503814.7A patent/CN113321279A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182512A (en) * | 2007-08-01 | 2008-05-21 | 江苏省嘉庆水务发展有限公司 | Biology diatom water treatment agent and method of producing the same |
| CN102838195A (en) * | 2012-09-14 | 2012-12-26 | 大连格兰清水环境工程有限公司 | Composite flocculant for sewage treatment |
| JP5501544B1 (en) * | 2014-01-30 | 2014-05-21 | 株式会社テクノス北海道 | Flocculant for wastewater treatment |
| CN104478054A (en) * | 2014-12-15 | 2015-04-01 | 石轩 | Compound diatomite flocculating agent and preparation method thereof |
| CN105967291A (en) * | 2016-05-10 | 2016-09-28 | 湖州国盛环保工程有限公司 | Flocculating agent for ecological remediation of black smelly surface water and production process thereof |
| CN107029661A (en) * | 2016-12-17 | 2017-08-11 | 安徽师范大学 | A kind of diatomite/poly aluminium iron silicate composite adsorbing material, preparation method and applications |
| CN110614077A (en) * | 2019-11-05 | 2019-12-27 | 云南新祥绿环境科技有限公司 | Diatomite sewage treatment agent |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113955895A (en) * | 2021-10-29 | 2022-01-21 | 安徽雷克环境科技有限公司 | Magnetic capture purification method for high-concentration algae water |
| CN114314780A (en) * | 2021-12-08 | 2022-04-12 | 重庆大学 | Application of diatomite-loaded magnetic nickel-iron layered double hydroxide as blue algae flocculant |
| CN114735795A (en) * | 2022-04-29 | 2022-07-12 | 扬州工业职业技术学院 | Sodium alginate-diatomite composite magnetic flocculant and preparation method thereof |
| CN114751597A (en) * | 2022-04-29 | 2022-07-15 | 扬州工业职业技术学院 | Water treatment process based on composite magnetic flocculant |
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