CN112374558A - Paint mist coagulant and preparation method thereof - Google Patents
Paint mist coagulant and preparation method thereof Download PDFInfo
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- CN112374558A CN112374558A CN202011324323.8A CN202011324323A CN112374558A CN 112374558 A CN112374558 A CN 112374558A CN 202011324323 A CN202011324323 A CN 202011324323A CN 112374558 A CN112374558 A CN 112374558A
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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
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/11—Turbidity
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to the field of paint mist-containing wastewater treatment, and provides a paint mist coagulant and a preparation method thereof, which are used for solving the problem of high treatment cost of paint mist-containing wastewater. The paint mist coagulant provided by the invention comprises an agent A and an agent B; the agent A comprises 1.5-3% of sodium dodecyl sulfate, 3-5% of sodium hydroxide, 1.5-3% of organic bentonite and the balance of water; the agent B comprises 0.5-1% of cationic polyacrylamide, 10-20% of calcium chloride and the balance of water. The paint in the wastewater can be effectively removed; the content of suspended substances in the wastewater is obviously reduced, the turbidity is reduced, and the treated wastewater can be used as circulating water.
Description
Technical Field
The invention relates to the field of paint mist-containing wastewater treatment, in particular to a paint mist coagulant and a preparation method thereof.
Background
With the rapid development of industry, the paint spraying is applied to the fields of automobile paint spraying, furniture paint spraying, hardware plastic, heavy machinery, ornaments, handicraft paint spraying and the like for corrosion resistance and wear resistance, and the main problems in the paint spraying are that highly dispersed paint mist and volatilized solvents pollute the environment, are not beneficial to human health, waste paint and cause economic loss. In order to solve the problem, the spraying industry usually adopts a circulating water system of a wet-type spray booth to capture the sprayed paint, but the paint has viscosity and can adhere to the inside of equipment, pipelines, a fan and a pump body, so that the blockage of a water path and a gas path is caused, and the surrounding environment and the body health of construction personnel are seriously polluted.
Therefore, the invention of a high-efficiency and environment-friendly paint mist coagulant is urgently needed. At present, the preparation process of the paint mist coagulant sold in the market is complex, the cost is higher, the treatment effect is not ideal, and the invention of the novel paint mist coagulant is very necessary for solving the existing problems.
Disclosure of Invention
The invention solves the technical problem and provides a paint mist coagulant and a preparation method thereof.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a paint mist coagulant comprises an agent A and an agent B;
the agent A comprises 1.5-3% of sodium dodecyl sulfate, 3-5% of sodium hydroxide, 1.5-3% of organic bentonite and the balance of water;
the agent B comprises 0.5-1% of cationic polyacrylamide, 10-20% of calcium chloride and the balance of water.
The agent A prepared by mixing sodium dodecyl benzene sulfonate, sodium hydroxide and organic bentonite can effectively disperse paint drops into flocs with smaller diameter and smaller mutual adhesion, thereby achieving the effect of viscosity elimination; the agent B prepared by mixing the cationic polyacrylamide and the calcium chloride can flocculate paint slag to form paint clusters which float on the water surface so as to be convenient for fishing.
The preparation process of the agent A and the agent B is simple, the cost is low, and the paint in the wastewater can be effectively removed.
Preferably, the agent A comprises 2-3% of sodium dodecyl sulfate, 4-5% of sodium hydroxide, 2-3% of organic bentonite and the balance of water.
Preferably, the agent A comprises 2% of sodium dodecyl sulfate, 4% of sodium hydroxide, 2% of organic bentonite and 92% of water.
Preferably, the agent B comprises 0.8-1% of cationic polyacrylamide, 15-20% of calcium chloride and the balance of water.
Preferably, the agent B comprises 0.8% of cationic polyacrylamide, 15% of calcium chloride and 84.2% of water. The removal efficiency of the paint can be further improved by optimizing each component in the formulation of A, B.
Preferably, the dosage of the agent A is 5-10 kg per ton of wastewater, and the dosage of the agent B is 1-5 kg per ton of wastewater.
Preferably, the dosage of the agent A is 8-10 kg per ton of wastewater, and the dosage of the agent B is 4-5 kg per ton of wastewater.
Preferably, the dosage of the agent A is 8kg per ton of wastewater, and the dosage of the agent B is 4kg per ton of wastewater.
Preferably, the bentonite is modified bentonite, and the preparation method of the modified bentonite comprises the following steps:
dispersing bentonite into deionized water, wherein the mass ratio of the bentonite to the deionized water is 1: 100-200, uniformly stirring, and performing ultrasonic treatment for 6 hours to obtain a dispersion liquid;
mixing the dispersion liquid with ethylene glycol, uniformly stirring, adding sodium acetate, adding polyethylene glycol, uniformly stirring, adding ferric chloride, stirring until the ferric chloride is dissolved, packaging the obtained mixed liquid in a polytetrafluoroethylene reaction kettle, reacting for 8 hours at 200-250 ℃, and cooling to room temperature; the dispersion liquid is as follows: ethylene glycol: sodium acetate: polyethylene glycol: ferric chloride =1:2.5:0.2:0.1: 0.05;
washing the obtained solid with deionized water, and drying to obtain the modified bentonite.
A method of preparing a paint coagulant, comprising:
mixing and stirring sodium dodecyl sulfate, sodium hydroxide, organic bentonite and water uniformly to obtain an agent A;
and uniformly mixing the cationic polyacrylamide and calcium chloride to obtain the agent B.
Compared with the prior art, the invention has the beneficial effects that: the paint in the wastewater can be effectively removed; the content of suspended substances in the wastewater is obviously reduced, the turbidity is reduced, and the treated wastewater can be used as circulating water.
Detailed Description
The following examples are further illustrative of the present invention and are not intended to be limiting thereof.
Example 1
The paint mist coagulant comprises an agent A and an agent B;
the agent A comprises 200g of sodium dodecyl sulfate, 400g of sodium hydroxide, 200g of organic bentonite and 9200g of water.
The agent B comprises 80g of cationic polyacrylamide, 1500g of calcium chloride and 8420g of water.
The dosage of the agent A is 8kg per ton of wastewater, and the dosage of the agent B is 4kg per ton of wastewater.
The preparation method of the paint coagulant comprises the following steps:
mixing and stirring sodium dodecyl sulfate, sodium hydroxide, organic bentonite and water uniformly to obtain an agent A;
and uniformly mixing the cationic polyacrylamide and calcium chloride to obtain the agent B.
The agent A prepared by mixing sodium dodecyl benzene sulfonate, sodium hydroxide and organic bentonite can effectively disperse paint drops into flocs with smaller diameter and smaller mutual adhesion, thereby achieving the effect of viscosity elimination; the agent B prepared by mixing the cationic polyacrylamide and the calcium chloride can flocculate paint slag to form paint clusters which float on the water surface so as to be convenient for fishing.
The preparation process of the agent A and the agent B is simple, the cost is low, and the paint in the wastewater can be effectively removed. The removal efficiency of the paint can be further improved by optimizing each component in the formulation of A, B.
Example 2
The paint mist coagulant comprises an agent A and an agent B;
the agent A comprises 200g of sodium dodecyl sulfate, 400g of sodium hydroxide, 200g of organic bentonite and 9200g of water.
The agent B comprises 80g of cationic polyacrylamide, 1500g of calcium chloride and 8420g of water.
The dosage of the agent A is 8kg per ton of wastewater, and the dosage of the agent B is 4kg per ton of wastewater.
The preparation method of the paint coagulant comprises the following steps:
mixing and stirring sodium dodecyl sulfate, sodium hydroxide, organic bentonite and water uniformly to obtain an agent A;
and uniformly mixing the cationic polyacrylamide and calcium chloride to obtain the agent B.
The bentonite is modified bentonite, and the preparation method of the modified bentonite comprises the following steps:
dispersing 200g of bentonite into 2300g of deionized water, wherein the mass ratio of the bentonite to the deionized water is 1: 100-200, uniformly stirring, and performing ultrasonic treatment for 6 hours to obtain a dispersion liquid;
mixing 2500g of dispersion liquid with 6250g of ethylene glycol, uniformly stirring, adding 500g of sodium acetate, adding 250g of polyethylene glycol, uniformly stirring, adding 10g of ferric chloride, stirring until the ferric chloride is dissolved, packaging the obtained mixed solution in a polytetrafluoroethylene reaction kettle, reacting for 8 hours at 200-250 ℃, and cooling to room temperature;
washing the obtained solid with deionized water, and drying to obtain the modified bentonite.
Comparative example 1
The paint mist coagulant comprises an agent A and an agent B;
the agent A comprises 400g of sodium hydroxide, 200g of organic bentonite and 9400g of water.
The agent B comprises 80g of cationic polyacrylamide, 1500g of calcium chloride and 8420g of water.
The dosage of the agent A is 8kg per ton of wastewater, and the dosage of the agent B is 4kg per ton of wastewater.
The preparation method of the paint coagulant comprises the following steps:
mixing and stirring sodium hydroxide, organic bentonite and water uniformly to obtain an agent A;
and uniformly mixing the cationic polyacrylamide and calcium chloride to obtain the agent B.
Comparative example 2
The paint mist coagulant comprises an agent A and an agent B;
the agent A comprises 200g of sodium dodecyl sulfate, 200g of organic bentonite and 9600g of water.
The agent B comprises 80g of cationic polyacrylamide, 1500g of calcium chloride and 8420g of water.
The dosage of the agent A is 8kg per ton of wastewater, and the dosage of the agent B is 4kg per ton of wastewater.
The preparation method of the paint coagulant comprises the following steps:
mixing and stirring sodium dodecyl sulfate, organic bentonite and water uniformly to obtain an agent A;
and uniformly mixing the cationic polyacrylamide and calcium chloride to obtain the agent B.
Comparative example 3
The paint mist coagulant comprises an agent A and an agent B;
the agent A comprises 200g of sodium dodecyl sulfate, 400g of sodium hydroxide and 9400g of water.
The agent B comprises 80g of cationic polyacrylamide, 1500g of calcium chloride and 8420g of water.
The dosage of the agent A is 8kg per ton of wastewater, and the dosage of the agent B is 4kg per ton of wastewater.
The preparation method of the paint coagulant comprises the following steps:
mixing and stirring sodium dodecyl sulfate, sodium hydroxide and water uniformly to obtain an agent A;
and uniformly mixing the cationic polyacrylamide and calcium chloride to obtain the agent B.
Comparative example 4
The paint mist coagulant comprises an agent A and an agent B;
the agent A comprises 200g of sodium dodecyl sulfate, 400g of sodium hydroxide, 200g of organic bentonite and 9200g of water.
The agent B comprises 1500g of calcium chloride and 8500g of water.
The dosage of the agent A is 8kg per ton of wastewater, and the dosage of the agent B is 4kg per ton of wastewater.
The preparation method of the paint coagulant comprises the following steps:
mixing and stirring sodium dodecyl sulfate, sodium hydroxide, organic bentonite and water uniformly to obtain an agent A;
and mixing the calcium chloride uniformly to obtain the agent B.
Comparative example 5
The paint mist coagulant comprises an agent A and an agent B;
the agent A comprises 200g of sodium dodecyl sulfate, 400g of sodium hydroxide, 200g of organic bentonite and 9200g of water.
The agent B comprises 80g of cationic polyacrylamide and 9920g of water.
The dosage of the agent A is 8kg per ton of wastewater, and the dosage of the agent B is 4kg per ton of wastewater.
The preparation method of the paint coagulant comprises the following steps:
mixing and stirring sodium dodecyl sulfate, sodium hydroxide, organic bentonite and water uniformly to obtain an agent A;
and uniformly mixing the cationic polyacrylamide to obtain the agent B.
Examples of the experiments
The paint mist coagulants in the examples 1-2 and the comparative examples 1-5 are respectively added into the wastewater, stirred uniformly, kept stand, and subjected to surface scum removal, and then a water sample 5cm below the water surface is taken to respectively test the turbidity of the water sample, and the turbidity measuring method refers to the turbidity measuring method of water turbidity of the national standard HJ 1075-2019.
The turbidity purification rates obtained in the respective embodiments are shown in the following table.
TABLE 1 turbidity removal Rate
| Turbidity removal rate | |
| Example 1 | 91% |
| Example 2 | 97% |
| Comparative example 1 | 72% |
| Comparative example 2 | 51% |
| Comparative example 3 | 49% |
| Comparative example 4 | 33% |
| Comparative example 5 | 63% |
As is apparent from Table 1, the turbidity cleaning rates of examples 1 and 2 were significantly higher than those of the comparative examples, indicating that the paint mist flocculating agent prepared according to the formulations of the agent A and the agent B described in this application can effectively clean the waste water having absorbed the paint mist.
The paint mist coagulants of comparative examples 1-5 lack one substance compared to comparative example 1, comparative example 1 lacks sodium dodecylbenzenesulfonate, comparative example 2 lacks sodium hydroxide, comparative example 3 lacks organobentonite, comparative example 4 lacks polyacrylamide, and comparative example 5 lacks calcium chloride. The purification effect of the comparative examples 1 to 5 on the paint mist-containing wastewater is obviously lower than that of the example 1, which shows that the sodium dodecyl benzene sulfonate, the sodium hydroxide, the organic bentonite, the polyacrylamide and the calcium chloride generate a certain synergistic interaction effect, and the purification effect of the paint mist-containing wastewater is effectively improved.
Example 2 uses modified organobentonite, which is superior to example 1 in purification efficiency. The modified bentonite used in example 2 is generally used for adsorbing biomacromolecules, zero-valent metals, etc., and is not seen in treating paint mist-containing wastewater. The treatment difficulty of the paint mist-containing wastewater is that paint slag can be used for circulation only after floating, and the work of a circulating water pump can be seriously influenced if the paint slag sinks. The paint mist coagulant in the embodiment 2 has high purification efficiency on waste water, and particularly has good agglomeration effect and is convenient to salvage paint slag floating.
The above detailed description is specific to possible embodiments of the present invention, and the above embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention should be included in the present claims.
Claims (9)
1. The paint mist coagulant is characterized by comprising an agent A and an agent B;
the agent A comprises 1.5-3% of sodium dodecyl sulfate, 3-5% of sodium hydroxide, 1.5-3% of organic bentonite and the balance of water;
the agent B comprises 0.5-1% of cationic polyacrylamide, 10-20% of calcium chloride and the balance of water.
2. The paint mist coagulant according to claim 1, wherein the agent A comprises 2 to 3% of sodium dodecyl sulfate, 4 to 5% of sodium hydroxide, 2 to 3% of organic bentonite, and the balance of water.
3. The paint mist coagulant according to claim 1, wherein the agent A comprises sodium dodecyl sulfate 2%, sodium hydroxide 4%, organic bentonite 2%, and water 92%.
4. The paint mist coagulant according to claim 2, wherein the agent B comprises 0.8 to 1% of cationic polyacrylamide, 15 to 20% of calcium chloride, and the balance being water.
5. The paint mist coagulant of claim 1 wherein the agent B comprises cationic polyacrylamide 0.8%, calcium chloride 15%, and water 84.2%.
6. The paint mist coagulant according to claim 1, wherein the amount of the agent A is 5 to 10kg per ton of wastewater, and the amount of the agent B is 1 to 5kg per ton of wastewater.
7. The paint mist coagulant according to claim 1, wherein the amount of the agent A is 8 to 10kg per ton of wastewater, and the amount of the agent B is 4 to 5kg per ton of wastewater.
8. The paint mist coagulant according to claim 1 wherein the amount of the agent A is 8kg per ton of wastewater and the amount of the agent B is 4kg per ton of wastewater.
9. The preparation method of the paint mist coagulant is characterized by comprising the following steps:
mixing and stirring sodium dodecyl sulfate, sodium hydroxide, organic bentonite and water uniformly to obtain an agent A;
and uniformly mixing the cationic polyacrylamide and calcium chloride to obtain the agent B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011324323.8A CN112374558A (en) | 2020-11-23 | 2020-11-23 | Paint mist coagulant and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011324323.8A CN112374558A (en) | 2020-11-23 | 2020-11-23 | Paint mist coagulant and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115340163A (en) * | 2022-08-23 | 2022-11-15 | 江门市安诺特炊具制造有限公司 | Paint mist coagulant and preparation method thereof |
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| CN102659230A (en) * | 2012-05-08 | 2012-09-12 | 天津若泽化学技术有限公司 | Green painting mist flocculating agent for coating circulating water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115340163A (en) * | 2022-08-23 | 2022-11-15 | 江门市安诺特炊具制造有限公司 | Paint mist coagulant and preparation method thereof |
| CN115340163B (en) * | 2022-08-23 | 2023-10-31 | 江门市安诺特炊具制造有限公司 | Paint mist coagulant and preparation method thereof |
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