CN114307947A - Preparation method and application of ecological modified bentonite phosphorus fixation agent - Google Patents
Preparation method and application of ecological modified bentonite phosphorus fixation agent Download PDFInfo
- Publication number
- CN114307947A CN114307947A CN202111477345.2A CN202111477345A CN114307947A CN 114307947 A CN114307947 A CN 114307947A CN 202111477345 A CN202111477345 A CN 202111477345A CN 114307947 A CN114307947 A CN 114307947A
- Authority
- CN
- China
- Prior art keywords
- phosphorus
- ecological
- modified bentonite
- solution
- fixation agent
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- 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.)
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 52
- 239000011574 phosphorus Substances 0.000 title claims abstract description 52
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical class O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- ICAKDTKJOYSXGC-UHFFFAOYSA-K lanthanum(iii) chloride Chemical compound Cl[La](Cl)Cl ICAKDTKJOYSXGC-UHFFFAOYSA-K 0.000 claims abstract description 15
- 239000010802 sludge Substances 0.000 claims abstract description 12
- 238000009210 therapy by ultrasound Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000010304 firing Methods 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 239000000440 bentonite Substances 0.000 claims abstract description 7
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 229910002249 LaCl3 Inorganic materials 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 229910052746 lanthanum Inorganic materials 0.000 claims description 9
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 9
- 239000003513 alkali Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 11
- 238000000746 purification Methods 0.000 abstract description 6
- 244000005700 microbiome Species 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 description 4
- 241000282414 Homo sapiens Species 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 241000192710 Microcystis aeruginosa Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000000527 sonication Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
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
Landscapes
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention provides a preparation method and application of an ecological modified bentonite phosphorus fixation agent. The preparation method of the ecological modified bentonite phosphorus fixation agent comprises the following steps: and (2) carrying out ultrasonic treatment on the lanthanum chloride solution in an alkaline environment, mixing and stirring the lanthanum chloride solution and bentonite in proportion, carrying out ultrasonic treatment, pouring the obtained mixture into a spherical mould for firing, and aerating the mixture in the spherical mould to enable the fired finished product to be a porous structure, thus obtaining the ecological modified bentonite phosphorus-fixing agent. The ecological modified bentonite phosphorus fixing agent burnt in the invention has a certain weight, can be better deposited at the bottom of a water body and continuously absorb phosphorus elements in bottom mud, has a porous structure, has a larger contact area with water, has a better phosphorus fixing effect, can enable microorganisms to have an attached carrier by virtue of the porous structure, improves the water purification effect, can continuously absorb phosphorus materials in water and sludge for a long time, and has a long-acting effect on the water purification of the whole body.
Description
Technical Field
The invention relates to the field of environmental protection treatment, in particular to a preparation method and application of an ecological modified bentonite phosphorus fixation agent.
Background
Environmental protection, which is called environmental protection in its entirety, refers to the collective name of various actions that human beings take to solve real or potential environmental problems, coordinate the relationship between human beings and the environment, and guarantee the sustainable development of economy and society. The method and means of the method are engineering, administrative, innovative and researched, legal, economic, propaganda and education and the like. A large amount of sewage containing phosphorus elements is discharged into lakes, so that the problems of water body pollution such as water bloom, red tide and the like can be caused, the bentonite is generally modified to have the phosphorus removal function, and the phosphorus removal material of the modified bentonite is put into the lake water to adsorb the phosphorus elements in the lake water, so that the phosphorus removal effect of the lake water is achieved, and the lake water is treated.
Most of the existing phosphorus removal materials of the modified bentonite are powdery, can be used only once and can only treat phosphorus materials in water, and the treatment effect on the phosphorus materials in the sludge is not obvious.
Therefore, there is a need to provide a new method for preparing an ecological modified bentonite phosphorus fixation agent and application thereof to solve the above technical problems.
Disclosure of Invention
In order to solve the technical problems, the invention provides a preparation method and application of an ecological modified bentonite phosphorus fixation agent.
The preparation method of the ecological modified bentonite phosphorus fixation agent provided by the invention comprises the following steps:
(1) adding an alkali solution into the LaCl3 solution to adjust the LaCl3 solution to be alkaline, and then preparing a lanthanum element solution by ultrasonic treatment;
(2) mixing and stirring bentonite and the lanthanum element solution obtained in the step (1) in proportion, and then carrying out ultrasonic treatment;
(3) and (3) pouring the mixture obtained in the step (2) into a spherical mold for firing, wherein the firing temperature is 150-200 ℃, the forming speed of a fired object is accelerated, and the mixture in the spherical mold is aerated to enable a fired finished product to be a porous structure, so that the ecological modified bentonite phosphorus fixing agent is obtained.
Preferably, the specific step of adding an alkali solution to the LaCl3 solution to adjust the LaCl3 solution to be alkaline in the step (1) is as follows: adding 0.5-2mol/L of LaCl3 solution into the solution with the concentration of 0.05-0.4mol/L, and adjusting the pH value to 8-12.
Preferably, the mixing ratio of the bentonite and the lanthanum element solution obtained in the step (1) in the step (2) is specifically 6: 4.
preferably, the temperature of the firing in the step (3) is 150-.
Preferably, the concentration of the LaCl3 solution in the step (1) is 0.1mol/L, and the alkali solution is a 1mol/L NaOH solution.
Preferably, the time of the ultrasound in the step (1) is 2 to 10 minutes.
Preferably, the time for the sonication in step (2) is 3 to 40 minutes.
Preferably, the spherical ecological modified bentonite phosphorus fixing agent fired in the step (3) has a diameter of 5 centimeters and a weight of 100 grams.
The application of the ecological modified bentonite phosphorus fixation agent in treating phosphorus materials in lake bottom sludge can be as follows: the ecological modified bentonite with a certain weight and a sintered spherical porous structure is used for fixing phosphorus and is deposited in the lake bottom sludge and uniformly distributed in the lake bottom sludge, the spherical structure is in more contact with water, and the porous structure can enable microorganisms to have an attached carrier.
Compared with the related technology, the ecological modified bentonite phosphorus fixation agent provided by the invention has the following beneficial effects:
the ecological modified bentonite phosphorus fixing agent burnt in the invention has a certain weight, can be better deposited at the bottom of a water body and continuously absorb phosphorus elements in bottom mud, has a porous structure, has a larger contact area with water, has a better phosphorus fixing effect, can enable microorganisms to have an attached carrier by virtue of the porous structure, improves the water purification effect, can continuously absorb phosphorus materials in water and sludge for a long time, and has a long-acting effect on the water purification of the whole body.
Detailed Description
In the specific implementation process, the preparation method of the ecological modified bentonite phosphorus fixation agent comprises the following steps:
(1) adding 1mol/L NaOH solution into 0.1mol/Lmol/L LaCl3 solution, adjusting pH to 10, and performing ultrasonic treatment for 10 minutes to prepare lanthanum solution;
(2) mixing bentonite and the lanthanum element solution obtained in the step (1) according to the proportion of 6: 4, mixing and stirring, and then carrying out ultrasonic treatment for 30 minutes to carry out full ultrasonic treatment;
(3) and (3) pouring the mixture obtained in the step (2) into a spherical mold for firing, wherein the firing temperature is 150-200 ℃, and the mixture in the spherical mold is inflated to ensure that the fired finished product is a porous structure, so as to obtain the ecological modified bentonite phosphorus-fixing agent.
Wherein, the mixture in the spherical mould is aerated in multiple directions, so as to improve the porosity and the uniformity of pores of the fired object.
Wherein, the diameter of the spherical ecological modified bentonite phosphorus fixing agent fired in the step (3) is 5 centimeters, and the weight is 100 g;
the application of the ecological modified bentonite phosphorus fixation agent in treating phosphorus materials in lake bottom sludge can be as follows: the ecological modified bentonite with a certain weight and a sintered spherical porous structure is used for fixing phosphorus and is deposited in the lake bottom sludge and uniformly distributed in the lake bottom sludge, the spherical structure is in more contact with water, and the porous structure can enable microorganisms to have an attached carrier.
The spherical structure is formed by firing modified bentonite added with lanthanum and is a porous structure, and the spherical structure has a certain weight and can be better sunk at the bottom of a water body to continuously absorb phosphorus in bottom mud; the porous structure is used for increasing more contact with water, so that the phosphorus fixing effect is better; the porous structure can make the microorganism have an attached carrier, and improve the water quality purification effect. The composite material is made into a spherical porous structure, so that the composite material is deposited in the lake bottom sludge, can continuously absorb phosphorus materials in water and sludge for a long time, and has a long-acting effect on the purification of the whole water quality.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The preparation method of the ecological modified bentonite phosphorus fixation agent is characterized by comprising the following steps:
(1) adding an alkali solution into the LaCl3 solution to adjust the LaCl3 solution to be alkaline, and then preparing a lanthanum element solution by ultrasonic treatment;
(2) mixing and stirring bentonite and the lanthanum element solution obtained in the step (1) in proportion, and then carrying out ultrasonic treatment;
(3) and (3) pouring the mixture obtained in the step (2) into a spherical mould for firing, and aerating the mixture in the spherical mould to enable the fired finished product to be of a porous structure, so as to obtain the ecological modified bentonite phosphorus fixation agent.
2. The method for preparing the ecologically modified bentonite phosphorus fixation agent as claimed in claim 1, wherein the step (1) of adding the alkali solution into the LaCl3 solution to adjust the LaCl3 solution to be alkaline comprises the following specific steps: adding 0.5-2mol/L of LaCl3 solution into the solution with the concentration of 0.05-0.4mol/L, and adjusting the pH value to 8-12.
3. The method for preparing the ecological modified bentonite phosphorus fixation agent according to claim 1, wherein the mixing ratio of the bentonite and the lanthanum element solution obtained in the step (1) in the step (2) is specifically 6: 4.
4. the method for preparing the ecological modified bentonite phosphorus fixation agent as claimed in claim 1, wherein the firing temperature in step (3) is 150-200 ℃.
5. The method for preparing the ecological modified bentonite phosphorus fixation agent according to claim 1, wherein the concentration of the LaCl3 solution in the step (1) is 0.1mol/L, and the alkali solution is 1mol/L NaOH solution.
6. The method for preparing the ecological modified bentonite phosphorus fixation agent according to claim 1, wherein the ultrasonic treatment time in the step (1) is 2-10 minutes.
7. The method for preparing the ecological modified bentonite phosphorus fixation agent according to claim 1, wherein the ultrasonic treatment time in the step (2) is 3-40 minutes.
8. The method for preparing the ecological modified bentonite phosphorus fixing agent according to claim 1, wherein the spherical ecological modified bentonite phosphorus fixing agent fired in the step (3) has a diameter of 5 cm and a weight of 100 g.
9. The spherical ecological modified bentonite phosphorus fixation agent prepared by the preparation method of the ecological modified bentonite phosphorus fixation agent according to any of the claims 1 to 8.
10. The use of the ecologically modified bentonite phosphorus fixation agent as defined in claim 9 for treating phosphorus materials in lake bottom sludge and lake water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111477345.2A CN114307947A (en) | 2021-12-06 | 2021-12-06 | Preparation method and application of ecological modified bentonite phosphorus fixation agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111477345.2A CN114307947A (en) | 2021-12-06 | 2021-12-06 | Preparation method and application of ecological modified bentonite phosphorus fixation agent |
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| Publication Number | Publication Date |
|---|---|
| CN114307947A true CN114307947A (en) | 2022-04-12 |
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| CN202111477345.2A Pending CN114307947A (en) | 2021-12-06 | 2021-12-06 | Preparation method and application of ecological modified bentonite phosphorus fixation agent |
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| CN (1) | CN114307947A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116832795A (en) * | 2023-07-24 | 2023-10-03 | 中节能(山东)催化剂有限公司 | Water body phosphorus control agent and preparation method thereof |
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Application publication date: 20220412 |