Preparation method and application of activator for silicate high-alkali wastewater from mixing station

Abstract

The present application relates to the field of wastewater processing, and specifically discloses a method for preparing a silicate high-alkali wastewater activator for a mixing station, comprising the following steps: S1: first add p-aminobenzenesulfonic acid and water to a reactor, stir evenly, add soda ash, adjust the pH to 9-10, control the temperature at 25-30°C, then heat to 60-65°C, add p-carboxylphenol, then drop formaldehyde and hydrogen peroxide, stir evenly, warm to 85-90°C, keep warm for 1-2h, and cool to room temperature, i.e., prepare an aminosulfonic acid dispersant; S2: mix sodium gluconate, molasses, tricalcium aluminate, tetrasodium ethylenediaminetetraacetic acid, a capture agent, and an aminosulfonic acid dispersant evenly, i.e., obtain a silicate high-alkali wastewater activator for a mixing station. The present application has the effect of improving the dispersibility between a retarder and a chelating agent and cement particles, thereby improving the utilization efficiency of wastewater from a mixing station.

Description

Technical Field

[0001] The present application relates to the field of wastewater processing, and more specifically, to a preparation method and application of an activator for silicate high-alkali wastewater from a mixing station. Background Art

[0002] During the operation of the concrete mixing station, a large amount of sewage will be continuously generated for cleaning the mixer truck. The substances produced by the mixing station flushing are sand and gravel, cement particles, admixture particles, soil particles, admixture components, cement hydrates, admixture reactants and a large amount of water. The sewage after the sand and gravel separator is a mixture of cement particles, admixture particles, mud particles, admixtures, hydration reactants and water. The liquid is strongly alkaline, and the reactants exist in the form of hydrates. Its composition is complex and fluctuates greatly.

[0003] The current method of treating wastewater from mixing stations is to first separate the solid and liquid into the wastewater through a sand and gravel separator, then filter out the solid impurities inside and press them into mud cakes, which are then handed over to companies that specialize in handling such waste for treatment. The corresponding treatment fees must be paid, but in fact the waste can be reused if properly handled.

[0004] However, since the current domestic research in this area is not very in-depth, according to the current common treatment method, the waste slurry water will solidify in about 6 hours, and the waste slurry water needs to go through primary sedimentation, secondary sedimentation, slurry adjustment and finally slurry mixing before it can be used. In order to ensure that the waste slurry water does not solidify during the treatment process, physical stirring is usually used to keep it flowing. The process of treating wastewater basically takes more than 6 hours. Although physical stirring maintains the fluidity of the waste slurry water, the waste slurry has been hydrated at this time. Physical stirring breaks the hydrated solids into small particles. Such small particles will not participate in the hydration of the fresh concrete when added to the fresh concrete, but will reduce the strength of the fresh concrete.

[0005] At present, retarders and chelating agents are generally added to wastewater to slow down the rate of hydration reaction, making it difficult for waste slurry water to solidify. However, the existing retarders and chelating agents have poor dispersibility with cement particles, so that the hydration reaction of cement cannot be well delayed, thus affecting the utilization rate of high-alkali wastewater in mixing plants. Therefore, there is still room for improvement. Summary of the invention

[0006] In order to improve the dispersibility between retarders and chelating agents and cement particles, thereby improving the utilization efficiency of mixing station wastewater, the present application provides a preparation method and application of a mixing station silicate high-alkali wastewater activator.

[0007] In the first aspect, the present application provides a method for preparing an activator for silicate high-alkali wastewater from a mixing station, using the following technical solution:

[0008] A method for preparing an activator for silicate high-alkali wastewater from a mixing station comprises the following steps:

[0009] S1: Preparation of aminosulfonic acid dispersant: first add 20-24 parts by weight of p-aminobenzenesulfonic acid and water into a reaction kettle, stir evenly, add soda ash, adjust the pH to 9-10, control the temperature at 25-30°C, then heat to 60-65°C, add 10-15 parts by weight of p-carboxyphenol, then drop 82-90 parts by weight of formaldehyde and 10-15 parts by weight of hydrogen peroxide, stir evenly, heat to 85-90°C, keep warm for 1-2h, and cool to room temperature to prepare an aminosulfonic acid dispersant;

[0010] S2: Preparation of activator: 20-35 parts by mass of sodium gluconate, 4-10.5 parts by mass of molasses, 5-8 parts by mass of tricalcium aluminate, 4-7 parts by mass of tetrasodium ethylenediaminetetraacetate, 3-5 parts by mass of catching agent and 0.5-3 parts by mass of aminosulfonic acid dispersant are mixed evenly to obtain a mixing station silicate high-alkali wastewater activator.

[0011] By adopting the above technical scheme, sodium gluconate and molasses are used as sugar retarders, and sodium gluconate reacts with free Ca in high-alkali wastewater. 2+ The unstable complex is generated and decomposes as the hydration proceeds, which will not affect the later hydration process, thus achieving the effect of slow setting. The colloidal substances in molasses wrap the cement in it, isolating the water and thus delaying the hydration reaction of tricalcium aluminate.

[0012] Tetrasodium ethylenediaminetetraacetate is used as a chelating agent. Tetrasodium ethylenediaminetetraacetate contains two nitrogen atoms and four oxygen atoms, which can provide electron pairs to form coordination bonds and form a chelate composed of six coordination bonds with calcium ions, which is beneficial to further delay the hydration reaction of tricalcium aluminate.

[0013] However, in the actual research and development process, it was found that when sodium gluconate and molasses were added at the same time, the colloidal substances in the molasses were prone to agglomeration, which promoted the coagulation between cement particles, thereby affecting the strength of the freshly mixed concrete; and by adopting the aminosulfonic acid dispersant prepared by the present application, which cooperates with sodium gluconate and molasses, the problem of poor dispersibility between sodium gluconate and molasses and cement particles is solved, and it is also beneficial to delay the hydration reaction of cement, so that the utilization efficiency of high-alkali wastewater is improved.

[0014] Preferably, the mass ratio of the molasses to the sodium gluconate is 20-30%.

[0015] By adopting the above technical solution, the hydroxyl groups in the sodium gluconate molecules are not easy to form a stable solvated water film on the surface of cement particles, so that the colloidal substances in the molasses can better wrap the cement particles, thereby delaying the hydration reaction of tricalcium aluminate and not being easily affected.

[0016] Preferably, the mass ratio of the aminosulfonic acid dispersant to the molasses is 10-20%.

[0017] By adopting the above technical solution, the -SO4 in the aminosulfonic acid dispersant 2- , -NH2 is not easy to form hydrogen bonds with water molecules, which makes it difficult for more water to be wrapped inside the cement particles, so that the strength of the fresh concrete is not easily affected.

[0018] Preferably, the capture agent is one or both of sodium poly-2-acryloyl-2-methylpropane sulfonate and sodium styrene sulfonate.

[0019] By adopting the above technical scheme, the sulfonic acid groups in sodium poly-2-acryloyl-2-methylpropane sulfonate and sodium styrene sulfonate enable the macromolecules in the high-alkali wastewater to have the ability to disperse dirt and dissolve insoluble salts, which is beneficial to improving the utilization rate of wastewater.

[0020] Preferably, the mass ratio of the sodium poly-2-acryloyl-2-methylpropane sulfonate to sodium styrene sulfonate is (1-1.4):1.

[0021] Preferably, the mass ratio of the sodium poly-2-acryloyl-2-methylpropane sulfonate to sodium styrene sulfonate is 1.2:1.

[0022] Preferably, the preparation method of the sodium poly-2-acryloyl-2-methylpropane sulfonate is:

[0023] S1: Preparation of 2-acryloyl-2-methylpropanesulfonic acid monomer: Add acrylonitrile and 98% concentrated sulfuric acid into a reactor, heat to 40-60°C for hydrolysis, then add isobutylene within 30-35 minutes, stir for 1-2 minutes, add a small amount of water, cool, filter, and dry to obtain colorless crystals of 2-acryloyl-2-methylpropanesulfonic acid;

[0024] S2: Solution polymerization: Dissolve 2-acryloyl-2-methylpropane sulfonic acid in deionized water, add into a reactor, heat to 80-90°C, then drop ammonium persulfate solution, react for 1-2h, and after the reaction is completed, cool to room temperature to obtain sodium poly-2-acryloyl-2-methylpropane sulfonate.

[0025] By adopting the above technical scheme, the poly-2-acryloyl-2-methylpropane sulfonate sodium prepared by the above method has a very high purity (greater than 98%), so that the ability of the poly-2-acryloyl-2-methylpropane sulfonate sodium to adsorb heavy metal ions is improved, which is beneficial to reducing the concentration of heavy metal ions in wastewater, thereby weakening the promoting effect of metal ions on cement hydration reaction.

[0026] In the second aspect, the present application provides an application of an activator for silicate high-alkali wastewater from a mixing station, using the following technical solution:

[0027] An application of an activator for silicate high-alkali wastewater from a mixing station, wherein the prepared activator is added to the silicate high-alkali wastewater from the mixing station, mixed evenly, and 1.5-2 kg of the activator is added to each ton of wastewater.

[0028] By adopting the above technical scheme, the retarding effect of wastewater is improved, so that after the wastewater is treated, the cement in the wastewater has not yet undergone a large amount of hydration reaction, so that the cement in the wastewater can be used to improve the strength of fresh concrete, so that the utilization rate of wastewater is greatly improved.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] 1. The aminosulfonic acid dispersant prepared by the method of the present application cooperates with tetrasodium ethylenediaminetetraacetate, sodium gluconate and molasses to solve the problem of poor dispersibility between tetrasodium ethylenediaminetetraacetate and sodium gluconate, molasses and cement particles, and is also beneficial to delaying the hydration reaction of cement, thereby improving the utilization efficiency of high-alkali wastewater.

[0031] 2. By limiting the mass ratio of molasses to sodium gluconate, the hydroxyl groups in the sodium gluconate molecules are not easy to form a stable solvated water film on the surface of cement particles, so that the colloidal substances in the molasses can better wrap the cement particles, thereby delaying the hydration reaction of tricalcium aluminate and not being easily affected.

[0032] 3. The sodium poly-2-acryloyl-2-methylpropane sulfonate prepared by the method of the present application improves the ability of the sodium poly-2-acryloyl-2-methylpropane sulfonate to adsorb heavy metal ions, which is beneficial to reduce the concentration of heavy metal ions in wastewater, thereby weakening the promoting effect of metal ions on cement hydration reaction. DETAILED DESCRIPTION

[0033] The present application is further described in detail below with reference to the embodiments.

[0034] Example 1

[0035] This embodiment discloses a method for preparing an activator for silicate high-alkali wastewater from a mixing station, comprising the following steps:

[0036] S1: Preparation of aminosulfonic acid dispersant: first add 20 kg of p-aminobenzenesulfonic acid and water into a reactor, stir evenly, add soda ash, adjust the pH to 9, control the temperature at 25°C, then heat to 60°C, add 10 kg of p-carboxyphenol, then drop 82 kg of formaldehyde and 10 kg of hydrogen peroxide, stir evenly, heat to 85°C, keep warm for 1 hour, and cool to room temperature to prepare an aminosulfonic acid dispersant;

[0037] S2: Preparation of activator: 20 kg of sodium gluconate, 4 kg of molasses, 5 kg of tricalcium aluminate, 4 kg of tetrasodium ethylenediaminetetraacetic acid, 3 kg of catching agent and 1 kg of aminosulfonic acid dispersant were mixed evenly to obtain a mixing station silicate high-alkali wastewater activator;

[0038] Among them, the mass ratio of molasses to sodium gluconate is 20%;

[0039] The capturing agent is sodium poly-2-acryloyl-2-methylpropane sulfonate and sodium styrene sulfonate, and the mass ratio of sodium poly-2-acryloyl-2-methylpropane sulfonate to sodium styrene sulfonate is 1:1.

[0040] This embodiment also discloses a method for preparing sodium poly-2-acryloyl-2-methylpropane sulfonate, comprising the following steps:

[0041] S1: Preparation of 2-acryloyl-2-methylpropanesulfonic acid monomer: Add acrylonitrile and 98% concentrated sulfuric acid into a reactor, heat to 40°C for hydrolysis, then add isobutylene within 30 minutes, stir for 1 minute, add a small amount of water, cool, filter, and dry to obtain colorless crystals of 2-acryloyl-2-methylpropanesulfonic acid;

[0042] S2: Solution polymerization: 2-acryloyl-2-methylpropane sulfonic acid was dissolved in deionized water, added into a reactor, heated to 80°C, and then ammonium persulfate solution was added dropwise for 2 hours. After the reaction was completed, the temperature was cooled to room temperature to obtain sodium poly-2-acryloyl-2-methylpropane sulfonate.

[0043] Example 2

[0044] The difference from Example 1 is that: A method for preparing an activator for silicate high-alkali wastewater from a mixing station comprises the following steps:

[0045] S1: Preparation of aminosulfonic acid dispersant: first add 24 kg of p-aminobenzenesulfonic acid and water into a reactor, stir evenly, add soda ash, adjust the pH to 10, control the temperature at 30°C, then heat to 65°C, add 15 kg of p-carboxyphenol, then drop 90 kg of formaldehyde and 15 kg of hydrogen peroxide, stir evenly, heat to 90°C, keep warm for 2 hours, and cool to room temperature to prepare an aminosulfonic acid dispersant;

[0046] S2: Preparation of activator: 35 kg of sodium gluconate, 10.5 kg of molasses, 8 kg of tricalcium aluminate, 7 kg of tetrasodium ethylenediaminetetraacetic acid, 5 kg of catching agent and 0.5 kg of aminosulfonic acid dispersant were mixed evenly to obtain a mixing station silicate high-alkali wastewater activator;

[0047] Among them, the mass ratio of molasses to sodium gluconate is 30%;

[0048] The capturing agent is sodium poly-2-acryloyl-2-methylpropane sulfonate and sodium styrene sulfonate, and the mass ratio of sodium poly-2-acryloyl-2-methylpropane sulfonate to sodium styrene sulfonate is 1.4:1.

[0049] A method for preparing sodium poly-2-acryloyl-2-methylpropane sulfonate comprises the following steps:

[0050] S1: Preparation of 2-acryloyl-2-methylpropanesulfonic acid monomer: Add acrylonitrile and 98% concentrated sulfuric acid into a reactor, heat to 60°C for hydrolysis, then add isobutylene within 35 minutes, stir for 2 minutes, add a small amount of water, cool, filter, and dry to obtain colorless crystals of 2-acryloyl-2-methylpropanesulfonic acid;

[0051] S2: Solution polymerization: Dissolve 2-acryloyl-2-methylpropane sulfonic acid in deionized water, add into a reactor, heat to 90°C, then drop ammonium persulfate solution, react for 1 hour, and after the reaction is completed, cool to room temperature to obtain sodium poly-2-acryloyl-2-methylpropane sulfonate.

[0052] Example 3

[0053] The difference from Example 1 is:

[0054] A method for preparing an activator for silicate high-alkali wastewater from a mixing station comprises the following steps:

[0055] S1: Preparation of aminosulfonic acid dispersant: first add 22 kg of p-aminobenzenesulfonic acid and water into a reactor, stir evenly, add soda ash, adjust the pH to 10, control the temperature at 28°C, then heat to 65°C, add 12 kg of p-carboxyphenol, then drop 85 kg of formaldehyde and 14 kg of hydrogen peroxide, stir evenly, heat to 88°C, keep warm for 1.5 hours, and cool to room temperature to prepare an aminosulfonic acid dispersant;

[0056] S2: Preparation of activator: 30 kg of sodium gluconate, 7.5 kg of molasses, 6 kg of tricalcium aluminate, 5 kg of tetrasodium ethylenediaminetetraacetic acid, 4 kg of catching agent and 3 kg of aminosulfonic acid dispersant were mixed evenly to obtain a mixing station silicate high-alkali wastewater activator;

[0057] Among them, the mass ratio of molasses to sodium gluconate is 25%;

[0058] The capturing agent is sodium poly-2-acryloyl-2-methylpropane sulfonate and sodium styrene sulfonate, and the mass ratio of sodium poly-2-acryloyl-2-methylpropane sulfonate to sodium styrene sulfonate is 1.2:1.

[0059] Example 4

[0060] The difference from Example 3 is that the mass ratio of the aminosulfonic acid dispersant in the activator to the molasses is 10%.

[0061] Example 5

[0062] The difference from Example 3 is that the mass ratio of the aminosulfonic acid dispersant in the activator to the molasses is 20%.

[0063] The experimental data of Examples 1-5 are shown in Table 1, and the dosage unit of each component is kg.

[0064] Table 1

[0065]

[0066] Comparative Example 1

[0067] The difference from Example 3 is that molasses is replaced by an equal amount of white sugar.

[0068] Comparative Example 2

[0069] The difference from Example 3 is that an equal amount of polycarboxylic acid dispersant is used to replace the aminosulfonic acid dispersant, wherein the polycarboxylic acid dispersant comes from Shandong Hongquan Chemical Technology Co., Ltd.

[0070] Comparative Example 3

[0071] The difference from Example 3 is that the mass ratio of molasses to sodium gluconate is 10%.

[0072] Comparative Example 4

[0073] The difference from Example 3 is that the mass ratio of molasses to sodium gluconate is 50%.

[0074] Application Example 1

[0075] A method for treating an activator for silicate high-alkali wastewater from a mixing station comprises the following steps:

[0076] S1: The high-alkali wastewater is initially precipitated in the primary sedimentation tank, then flows into the secondary sedimentation tank for secondary treatment, and finally flows into the mud mixing tank;

[0077] S2: When the wastewater in the mud stirring tank reaches 10 tons, stop the inflow of wastewater, and then detect the concentration of wastewater in the mud stirring tank. In this application example, the concentration of wastewater is 30%, and then add 15kg of activator, stir evenly at a speed of 60r / min to obtain finished slurry water.

[0078] The activator added in this application example is the activator prepared in Example 1.

[0079] Application Example 2

[0080] The difference from Application Example 1 is that the activator added in this Application Example is the activator prepared in Example 2.

[0081] Application Example 3

[0082] The difference from Application Example 1 is that the activator added in this Application Example is the activator prepared in Example 3.

[0083] Application Example 4

[0084] The difference from Application Example 3 is that the activator added in this Application Example is the activator prepared in Example 4.

[0085] Application Example 5

[0086] The difference from Application Example 3 is that the activator added in this Application Example is the activator prepared in Example 5.

[0087] Comparative application example 1

[0088] The difference from Application Example 3 is that the activator added in this Application Example is the activator prepared in Comparative Example 1.

[0089] Comparative Application Example 2

[0090] The difference from Application Example 3 is that the activator added in this Application Example is the activator prepared in Comparative Example 2.

[0091] Comparative Application Example 3

[0092] The difference from Application Example 3 is that the activator added in this Application Example is the activator prepared in Comparative Example 3.

[0093] Comparative Application Example 4

[0094] The difference from Application Example 3 is that the activator added in this Application Example is the activator prepared in Comparative Example 4.

[0095] Experiment 1

[0096] This experiment refers to GB / T1346-2011 "Test Methods for Water Consumption, Setting Time and Stability of Cement Standard Consistency" to test the initial setting time and final setting time of the finished slurry water obtained from the above application examples 1-5 and comparative application examples 1-4. The experimental results are shown in Table 2.

[0097] Table 2

[0098]

[0099] According to the comparison of the data of Application Examples 1-2 and 3 in Table 2, it can be seen that only by using molasses, sodium gluconate and aminosulfonic acid dispersants to cooperate with each other can the cement hydration reaction be better delayed. This is because the aminosulfonic acid dispersants introduce -SO4 2- , -NH2, so that the surface of the colloidal substances in the molasses has the same charge, and then the colloidal substances in the molasses are not easy to agglomerate, so that the dispersibility between the cement particles is improved; and the carboxyl group in the aminosulfonic acid dispersant forms an unstable complex with the calcium ions in the cement, so that a protective film layer is formed on the surface of the cement particles, which controls the concentration of calcium ions in the liquid phase at the initial stage of cement hydration, which is beneficial to delay the hydration reaction of the cement. With the progress of the hydration process, the alkalinity in the liquid phase increases, and this unstable complex will be destroyed, so that the hydration will continue normally. Therefore, only by using molasses, sodium gluconate and aminosulfonic acid dispersants to cooperate with each other, after the wastewater is treated, the cement in the wastewater has not yet undergone a large amount of hydration reaction, so that the cement in the wastewater can be used to improve the strength of fresh concrete, thereby greatly improving the utilization rate of wastewater.

[0100] Experimental Example 1

[0101] A concrete mixture comprising the following components in mass:

[0102] Finished product slurry 2.4kg; cement 4.7kg; sand 5.3kg; stone 13.2kg; mineral powder 1.4kg;

[0103] Among them, the finished pulp water adopts the finished pulp water obtained by processing in Application Example 1.

[0104] The preparation method of concrete mixture is as follows: cement, sand, stone and mineral powder are added into a mixing kettle respectively, stirred evenly, and then the finished slurry water is added, stirred evenly, and the concrete mixture is obtained.

[0105] Experimental Example 2

[0106] The difference from Experimental Example 1 is that the finished pulp water is the finished pulp water obtained by processing in Application Example 2.

[0107] Experimental Example 3

[0108] The difference from Experimental Example 1 is that the finished pulp water is the finished pulp water obtained by processing in Application Example 3.

[0109] Experimental Example 4

[0110] The difference from Experimental Example 3 is that the finished pulp water is the finished pulp water obtained by processing in Application Example 4.

[0111] Experimental Example 5

[0112] The difference from Experimental Example 3 is that the finished pulp water is the finished pulp water obtained by processing in Application Example 5.

[0113] Comparative Experiment Example 1

[0114] The difference from Experimental Example 3 is that the finished pulp water is the finished pulp water obtained by processing in Comparative Application Example 1.

[0115] Comparative Experiment Example 2

[0116] The difference from Experimental Example 3 is that the finished pulp water is the finished pulp water obtained by processing in Comparative Application Example 2.

[0117] Comparative Experiment 3

[0118] The difference from Experimental Example 3 is that the finished pulp water is the finished pulp water obtained by processing in Comparative Application Example 3.

[0119] Comparative Experiment Example 4

[0120] The difference from Experimental Example 3 is that the finished pulp water is the finished pulp water obtained by processing in Comparative Application Example 4.

[0121] Blank control group

[0122] The difference from Experimental Example 3 is that the finished product pulp water is replaced by an equal amount of clean water.

[0123] Experiment 2

[0124] This experiment refers to GB / T50081-2016 "Standard for Test Methods for Mechanical Properties of Ordinary Concrete" to test the compressive strength of the concrete mixtures prepared in the above experimental examples and the comparative experimental examples. The experimental results are shown in Table 3.

[0125] Table 3

[0126]

[0127] According to the comparison of the data of Experimental Examples 1-5 in Table 3 with the data of the blank control group, it can be seen that the compressive strength of the concrete prepared by the finished slurry and cement in Experimental Examples 1-5 is basically close to the compressive strength of the concrete prepared by clean water and cement, indicating that the cement particles in the finished slurry are not completely hydrated before being added to the fresh concrete, but are hydrated after being added to the fresh concrete, so that the compressive strength of the fresh concrete will not be affected.

[0128] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method for preparing an activator for silicate high-alkali wastewater from a mixing station, characterized in that: The following steps are involved: S1: Preparation of aminosulfonic acid dispersant: first add 20-24 parts by weight of p-aminobenzenesulfonic acid and water into a reaction kettle, stir evenly, add soda ash, adjust the pH to 9-10, control the temperature at 25-30°C, then heat to 60-65°C, add 10-15 parts by weight of p-carboxyphenol, then drop 82-90 parts by weight of formaldehyde and 10-15 parts by weight of hydrogen peroxide, stir evenly, heat to 85-90°C, keep warm for 1-2h, and cool to room temperature to prepare an aminosulfonic acid dispersant; S2: Preparation of activator: 20-35 parts by mass of sodium gluconate, 4-10.5 parts by mass of molasses, 5-8 parts by mass of tricalcium aluminate, 4-7 parts by mass of tetrasodium ethylenediaminetetraacetate, 3-5 parts by mass of catching agent and 0.5-3 parts by mass of aminosulfonic acid dispersant are mixed evenly to obtain a mixing station silicate high-alkali wastewater activator; The capture agent is sodium poly-2-acryloyl-2-methylpropane sulfonate and sodium styrene sulfonate; The mass ratio of the sodium poly-2-acryloyl-2-methylpropane sulfonate to sodium styrene sulfonate is (1-1.4):

1.

2. The method for preparing an activator for silicate high-alkali wastewater from a mixing station according to claim 1, characterized in that: The mass ratio of the molasses to the sodium gluconate is 20-30%.

3. The method for preparing an activator for silicate high-alkali wastewater from a mixing station according to claim 1, characterized in that: The mass ratio of aminosulfonic acid dispersant to molasses is 10-20%.

4. The method for preparing an activator for silicate high-alkali wastewater from a mixing station according to claim 1, characterized in that: The mass ratio of the sodium poly-2-acryloyl-2-methylpropane sulfonate to sodium styrene sulfonate is 1.2:

1.

5. The method for preparing an activator for silicate high-alkali wastewater from a mixing station according to claim 1, characterized in that: The preparation method of the poly-2-acryloyl-2-methylpropane sulfonate sodium is: S1: Preparation of 2-acryloyl-2-methylpropanesulfonic acid monomer: Add acrylonitrile and 98% concentrated sulfuric acid into a reactor, heat to 40-60°C for hydrolysis, then add isobutylene within 30-35 minutes, stir for 1-2 minutes, add a small amount of water, cool, filter, and dry to obtain colorless crystals of 2-acryloyl-2-methylpropanesulfonic acid; S2: Solution polymerization: Dissolve 2-acryloyl-2-methylpropane sulfonic acid in deionized water, add into a reactor, heat to 80-90°C, then drop ammonium persulfate solution, react for 1-2h, and after the reaction is completed, cool to room temperature to obtain sodium poly-2-acryloyl-2-methylpropane sulfonate.

6. An application of the silicate high-alkali wastewater activator of any one of claims 1 to 5, characterized in that: The prepared activator is added to the silicate high-alkali wastewater of the mixing station, mixed evenly, and 1.5-2 kg of activator is added per ton of wastewater.

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