CN118307123A - Wastewater treatment method of tetramethyl ammonium hydroxide - Google Patents
Wastewater treatment method of tetramethyl ammonium hydroxide Download PDFInfo
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- CN118307123A CN118307123A CN202410741753.1A CN202410741753A CN118307123A CN 118307123 A CN118307123 A CN 118307123A CN 202410741753 A CN202410741753 A CN 202410741753A CN 118307123 A CN118307123 A CN 118307123A
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- Prior art keywords
- ammonium hydroxide
- tetramethyl ammonium
- mesoporous silica
- wastewater
- lanthanum
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- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 title claims abstract description 168
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 90
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 45
- 239000002351 wastewater Substances 0.000 claims abstract description 32
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims abstract description 27
- 239000001632 sodium acetate Substances 0.000 claims abstract description 27
- 235000017281 sodium acetate Nutrition 0.000 claims abstract description 27
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 230000001105 regulatory effect Effects 0.000 claims abstract description 3
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 44
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 22
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 18
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 9
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 9
- 150000002603 lanthanum Chemical class 0.000 claims description 8
- ICAKDTKJOYSXGC-UHFFFAOYSA-K lanthanum(iii) chloride Chemical compound Cl[La](Cl)Cl ICAKDTKJOYSXGC-UHFFFAOYSA-K 0.000 claims description 8
- 229910052746 lanthanum Inorganic materials 0.000 claims description 6
- -1 lanthanum ions Chemical class 0.000 claims description 6
- CZMAIROVPAYCMU-UHFFFAOYSA-N lanthanum(3+) Chemical compound [La+3] CZMAIROVPAYCMU-UHFFFAOYSA-N 0.000 claims description 5
- 238000001354 calcination Methods 0.000 claims description 4
- FYDKNKUEBJQCCN-UHFFFAOYSA-N lanthanum(3+);trinitrate Chemical compound [La+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O FYDKNKUEBJQCCN-UHFFFAOYSA-N 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- SATVIFGJTRRDQU-UHFFFAOYSA-N potassium hypochlorite Chemical compound [K+].Cl[O-] SATVIFGJTRRDQU-UHFFFAOYSA-N 0.000 claims description 2
- 238000000354 decomposition reaction Methods 0.000 abstract description 28
- 230000000052 comparative effect Effects 0.000 description 14
- 239000007844 bleaching agent Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/06—Halogens; Compounds thereof
- B01J27/08—Halides
- B01J27/10—Chlorides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/24—Nitrogen compounds
- B01J27/25—Nitrates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/64—Pore diameter
- B01J35/647—2-50 nm
-
- 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
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Materials Engineering (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention relates to the technical field of wastewater treatment, and provides a wastewater treatment method of tetramethyl ammonium hydroxide, which comprises the following steps: and (3) regulating the pH value of the wastewater containing the tetramethylammonium hydroxide to 7-7.5, adding hypochlorite, sodium bicarbonate, sodium acetate and mesoporous silica, mixing, reacting, settling and yielding water. Through the technical scheme, the problem of low decomposition rate of tetramethyl ammonium hydroxide in the prior art is solved.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to a wastewater treatment method of tetramethyl ammonium hydroxide.
Background
Tetramethyl ammonium hydroxide, a strongly basic substance, is widely used as a developer in the electronics industry. But it produces toxic wastewater containing tetramethylammonium hydroxide during use. Such waste water, if discharged directly, may cause environmental pollution. Thus, there is a need for an efficient wastewater treatment process to remove tetramethyl ammonium hydroxide from wastewater.
At present, a common method is to decompose and discharge tetramethyl ammonium hydroxide in wastewater by using microorganisms or bleaching agents. The rate of microbial decomposition of tetramethyl ammonium hydroxide is slow, and large areas of sites are required to be used, which cannot meet the current requirements of the semiconductor industry. The method of decomposing tetramethyl ammonium hydroxide by adding the bleaching agent has the defect of low decomposition rate. Therefore, the development of a novel wastewater treatment method of tetramethyl ammonium hydroxide has important significance.
Disclosure of Invention
The invention provides a wastewater treatment method of tetramethyl ammonium hydroxide, which solves the problem of lower tetramethyl ammonium hydroxide decomposition rate in the related technology.
The technical scheme of the invention is as follows:
The invention provides a wastewater treatment method of tetramethyl ammonium hydroxide, which comprises the following steps: and (3) regulating the pH value of the wastewater containing the tetramethylammonium hydroxide to 7-7.5, adding hypochlorite, sodium bicarbonate, sodium acetate and mesoporous silica, mixing, reacting, settling and yielding water.
As a further technical scheme, the mass ratio of the hypochlorite to the tetramethylammonium hydroxide in the wastewater containing tetramethylammonium hydroxide is 40-50:50, the mass ratio of the sodium bicarbonate to the tetramethylammonium hydroxide in the wastewater containing tetramethylammonium hydroxide is 5-25:50, the mass ratio of the sodium acetate to the tetramethylammonium hydroxide in the wastewater containing tetramethylammonium hydroxide is 4-8:50, and the mass ratio of the mesoporous silica to the tetramethylammonium hydroxide in the wastewater containing tetramethylammonium hydroxide is 5-10:50.
In the invention, the decomposition rate of the tetramethyl ammonium hydroxide is further improved by optimizing the addition amount of hypochlorite, sodium bicarbonate, sodium acetate and mesoporous silica.
As a further technical scheme, the mass ratio of the sodium bicarbonate to the sodium acetate is 2-2.5:1.
In the invention, when the mass ratio of sodium bicarbonate to sodium acetate is 2-2.5:1, the decomposition rate of tetramethyl ammonium hydroxide is further improved.
As a further technical scheme, the mesoporous silica is lanthanum ion-loaded mesoporous silica.
In the invention, the mesoporous silica is loaded with lanthanum ions, so that the decomposition reaction can be further promoted, and the decomposition rate of the tetramethyl ammonium hydroxide can be further improved.
As a further technical scheme, the preparation method of the lanthanum ion-loaded mesoporous silica comprises the following steps: dissolving lanthanum salt in water, adding mesoporous silica, uniformly dispersing, concentrating, and calcining to obtain the lanthanum ion-loaded mesoporous silica.
As a further technical scheme, the lanthanum salt comprises one or two of lanthanum nitrate and lanthanum chloride.
As a further technical scheme, the mass ratio of the lanthanum salt to the mesoporous silica is 1-5:20.
According to the invention, when the mass ratio of lanthanum salt to mesoporous silica is 1-5:20, the decomposition rate of tetramethyl ammonium hydroxide is further improved.
As a further technical scheme, the temperature is 200-300 ℃ and the time is 1-2 h during calcination.
As a further technical scheme, the hypochlorite comprises one or more of sodium hypochlorite, calcium hypochlorite and potassium hypochlorite.
As a further technical scheme, the pore diameter of the mesoporous silica is 2-20 nm.
As a further technical scheme, the temperature is 20-25 ℃ and the time is 6-8 hours during the reaction.
The working principle and the beneficial effects of the invention are as follows:
In the invention, the wastewater treatment method of the tetramethyl ammonium hydroxide has the advantage of high decomposition rate. Wherein, sodium bicarbonate and sodium acetate are added in the wastewater treatment process, and the sodium bicarbonate and the sodium acetate are synergistic, so that the decomposition rate of the tetramethylammonium hydroxide is obviously improved. In addition, the mesoporous silica can promote the decomposition reaction, thereby improving the decomposition rate of the tetramethyl ammonium hydroxide.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the following examples and comparative examples, the mesoporous silica was obtained from Nanj-based biosciences Co., ltd, and had a model number of JK-04-007-100 and a pore diameter of 9nm, unless otherwise specified.
Example 1
A method for treating wastewater by tetramethyl ammonium hydroxide comprises the following steps: adjusting the pH value of wastewater containing tetramethyl ammonium hydroxide to 7, adding sodium hypochlorite, sodium bicarbonate, sodium acetate and mesoporous silica, mixing, reacting at 25 ℃ for 6 hours, settling, and discharging water;
wherein the concentration of tetramethyl ammonium hydroxide in the wastewater containing tetramethyl ammonium hydroxide is 50mg/L, the adding amount of sodium hypochlorite is 35mg/L, the adding amount of sodium bicarbonate is 3mg/L, the adding amount of sodium acetate is 1mg/L, and the adding amount of mesoporous silica is 3mg/L.
Example 2
A method for treating wastewater by tetramethyl ammonium hydroxide comprises the following steps: adjusting the pH value of wastewater containing tetramethyl ammonium hydroxide to 7.5, adding sodium hypochlorite, sodium bicarbonate, sodium acetate and mesoporous silica, mixing, reacting at 20 ℃ for 8 hours, settling, and discharging water;
Wherein the concentration of tetramethyl ammonium hydroxide in the wastewater containing tetramethyl ammonium hydroxide is 50mg/L, the adding amount of sodium hypochlorite is 55mg/L, the adding amount of sodium bicarbonate is 30mg/L, the adding amount of sodium acetate is 10mg/L, and the adding amount of mesoporous silica is 15mg/L.
Example 3
The difference between this example and example 2 is that in this example, the amount of sodium hypochlorite added was 35mg/L, the amount of sodium bicarbonate added was 3mg/L, the amount of sodium acetate added was 1mg/L, and the amount of mesoporous silica added was 3mg/L.
Example 4
The difference between this example and example 2 is that in this example, the amount of sodium hypochlorite added was 40mg/L, the amount of sodium bicarbonate added was 5mg/L, the amount of sodium acetate added was 4mg/L, and the amount of mesoporous silica added was 5mg/L.
Example 5
The difference between this example and example 2 is that in this example, the amount of sodium hypochlorite added was 50mg/L, the amount of sodium bicarbonate added was 25mg/L, the amount of sodium acetate added was 8mg/L, and the amount of mesoporous silica added was 10mg/L.
Example 6
This example differs from example 5 only in that in this example, the amount of sodium bicarbonate added was 13mg/L.
Example 7
The difference between this example and example 5 is that in this example, the amount of sodium bicarbonate added was 17mg/L and the amount of sodium acetate added was 4mg/L.
Example 8
The difference between this example and example 5 is that in this example, the amount of sodium bicarbonate added was 14mg/L and the amount of sodium acetate added was 7mg/L.
Example 9
The difference between this example and example 5 is that in this example, the amount of sodium bicarbonate added was 15mg/L and the amount of sodium acetate added was 6mg/L.
Example 10
The difference between this embodiment and embodiment 9 is that in this embodiment, the mesoporous silica is mesoporous silica loaded with lanthanum ions, and the preparation method of the mesoporous silica loaded with lanthanum ions is as follows: dissolving lanthanum chloride in water, adding mesoporous silica, dispersing uniformly, concentrating under reduced pressure, calcining at 250 ℃ for 1.5h to obtain mesoporous silica loaded with lanthanum ions;
wherein the mass ratio of lanthanum chloride to mesoporous silica is 1:30.
Example 11
This example differs from example 10 only in that in this example lanthanum chloride was replaced by an equivalent amount of lanthanum nitrate.
Example 12
The only difference between this example and example 10 is that in this example, the mass ratio of lanthanum chloride to mesoporous silica is 2:5.
Example 13
The only difference between this example and example 10 is that in this example, the mass ratio of lanthanum chloride to mesoporous silica is 1:20.
Example 14
The only difference between this example and example 10 is that in this example, the mass ratio of lanthanum chloride to mesoporous silica is 1:4.
Comparative example 1
The comparative example differs from example 1 only in that sodium bicarbonate was not added and sodium acetate was added in an amount of 4mg/L.
Comparative example 2
The comparative example differs from example 1 only in that sodium acetate was not added and sodium bicarbonate was added in an amount of 4mg/L.
Comparative example 3
The comparative example differs from example 1 only in that sodium bicarbonate and sodium acetate were not added in the comparative example.
Comparative example 4
The comparative example differs from example 1 only in that in this comparative example, no mesoporous silica was added.
The concentrations of tetramethylammonium hydroxide after water discharge of examples 1 to 14 and comparative examples 1 to 4 were measured, and the decomposition rate of tetramethylammonium hydroxide was calculated according to the following formula, and the decomposition rate=tetramethylammonium hydroxide concentration after water discharge/tetramethylammonium hydroxide concentration before treatment×100%. The calculation results are shown in table 1 below.
TABLE 1 decomposition rate of tetramethyl ammonium hydroxide
The decomposition rate of tetramethylammonium hydroxide in example 1 is significantly higher than that of comparative examples 1 to 3, which shows that the decomposition rate of tetramethylammonium hydroxide can be greatly improved by adding sodium bicarbonate and sodium acetate to the wastewater treatment process and synergistically. The decomposition rate of tetramethylammonium hydroxide in example 1 was significantly higher than that of comparative example 4, indicating that the addition of mesoporous silica significantly improved the decomposition rate of tetramethylammonium hydroxide.
The decomposition rate of tetramethylammonium hydroxide in examples 4 to 5 was higher than that in examples 2 to 3, which indicates that when the mass ratio of hypochlorite to tetramethylammonium hydroxide in the wastewater containing tetramethylammonium hydroxide was 40 to 50:50, the mass ratio of sodium bicarbonate to tetramethylammonium hydroxide in the wastewater containing tetramethylammonium hydroxide was 5 to 25:50, the mass ratio of sodium acetate to tetramethylammonium hydroxide in the wastewater containing tetramethylammonium hydroxide was 4 to 8:50, and the mass ratio of mesoporous silica to tetramethylammonium hydroxide in the wastewater containing tetramethylammonium hydroxide was 5 to 10:50, it was helpful to further increase the decomposition rate of tetramethylammonium hydroxide. The decomposition rate of tetramethylammonium hydroxide in examples 8-9 was higher than that in examples 6-7, indicating that it was helpful to further increase the decomposition rate of tetramethylammonium hydroxide when the mass ratio of sodium bicarbonate to sodium acetate was 2-2.5:1.
The decomposition rate of tetramethylammonium hydroxide in examples 10 to 14 was higher than that in example 9, which indicates that the mesoporous silica was supported with lanthanum ions, which was conducive to further increasing the decomposition rate of tetramethylammonium hydroxide. The decomposition rate of tetramethylammonium hydroxide in examples 13-14 was higher than examples 10, 12, indicating that it was helpful to further increase the decomposition rate of tetramethylammonium hydroxide when the mass ratio of lanthanum salt to mesoporous silica was 1-5:20.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
1. The method for treating the wastewater by using the tetramethyl ammonium hydroxide is characterized by comprising the following steps of: and (3) regulating the pH value of the wastewater containing the tetramethylammonium hydroxide to 7-7.5, adding hypochlorite, sodium bicarbonate, sodium acetate and mesoporous silica, mixing, reacting, settling and yielding water.
2. The method for treating wastewater containing tetramethyl ammonium hydroxide according to claim 1, wherein the mass ratio of hypochlorite to tetramethyl ammonium hydroxide in the wastewater containing tetramethyl ammonium hydroxide is 40-50:50, the mass ratio of sodium bicarbonate to tetramethyl ammonium hydroxide in the wastewater containing tetramethyl ammonium hydroxide is 5-25:50, the mass ratio of sodium acetate to tetramethyl ammonium hydroxide in the wastewater containing tetramethyl ammonium hydroxide is 4-8:50, and the mass ratio of mesoporous silica to tetramethyl ammonium hydroxide in the wastewater containing tetramethyl ammonium hydroxide is 5-10:50.
3. The method for treating wastewater by using tetramethyl ammonium hydroxide according to claim 2, wherein the mass ratio of sodium bicarbonate to sodium acetate is 2-2.5:1.
4. The method for wastewater treatment with tetramethylammonium hydroxide according to claim 1, wherein said mesoporous silica is lanthanum ion-loaded mesoporous silica.
5. The method for treating wastewater containing tetramethyl ammonium hydroxide according to claim 4, wherein the method for preparing mesoporous silica loaded with lanthanum ions comprises the following steps: dissolving lanthanum salt in water, adding mesoporous silica, uniformly dispersing, concentrating, and calcining to obtain the lanthanum ion-loaded mesoporous silica.
6. The method for wastewater treatment with tetramethylammonium hydroxide according to claim 5, wherein said lanthanum salt comprises one or both of lanthanum nitrate and lanthanum chloride.
7. The method for treating wastewater by tetramethyl ammonium hydroxide according to claim 5, wherein the mass ratio of lanthanum salt to mesoporous silica is 1-5:20.
8. The method for wastewater treatment with tetramethyl ammonium hydroxide according to claim 1, wherein the hypochlorite comprises one or more of sodium hypochlorite, calcium hypochlorite, and potassium hypochlorite.
9. The method for treating wastewater by tetramethyl ammonium hydroxide according to claim 1, wherein the mesoporous silica has a pore diameter of 5-20 nm.
10. The method for treating wastewater by using tetramethyl ammonium hydroxide according to claim 1, wherein the reaction is carried out at a temperature of 20-25 ℃ for 6-8 hours.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318526A (en) * | 2000-04-14 | 2001-10-24 | 日本电气株式会社 | Method for treatment of waste water and device for treatment of waste water using the method |
| JP2003236531A (en) * | 2002-02-14 | 2003-08-26 | Babcock Hitachi Kk | Method for treating waste liquid containing quaternary ammonium salt |
| CN1468807A (en) * | 2002-07-03 | 2004-01-21 | 株式会社日本触媒 | Sewage treatment method and apparatus |
| CN106311251A (en) * | 2016-08-30 | 2017-01-11 | 上海大学 | Preparation method of mesoporous silica supported high-dispersion nickel-lanthanum oxide catalyst |
| CN106431830A (en) * | 2016-08-11 | 2017-02-22 | 刘定忠 | Decomposition method of tetramethyl ammonium hydroxide solution and decomposition device thereof |
-
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- 2024-06-11 CN CN202410741753.1A patent/CN118307123A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1318526A (en) * | 2000-04-14 | 2001-10-24 | 日本电气株式会社 | Method for treatment of waste water and device for treatment of waste water using the method |
| JP2003236531A (en) * | 2002-02-14 | 2003-08-26 | Babcock Hitachi Kk | Method for treating waste liquid containing quaternary ammonium salt |
| CN1468807A (en) * | 2002-07-03 | 2004-01-21 | 株式会社日本触媒 | Sewage treatment method and apparatus |
| CN106431830A (en) * | 2016-08-11 | 2017-02-22 | 刘定忠 | Decomposition method of tetramethyl ammonium hydroxide solution and decomposition device thereof |
| CN106311251A (en) * | 2016-08-30 | 2017-01-11 | 上海大学 | Preparation method of mesoporous silica supported high-dispersion nickel-lanthanum oxide catalyst |
Non-Patent Citations (1)
| Title |
|---|
| 冯俊小等主编: "能源与环境", 30 June 2011, 冶金工业出版社, pages: 135 * |
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