CN111592082A - Water-based paint mist coagulant, and preparation method and application thereof - Google Patents
Water-based paint mist coagulant, and preparation method and application thereof Download PDFInfo
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- CN111592082A CN111592082A CN202010429136.XA CN202010429136A CN111592082A CN 111592082 A CN111592082 A CN 111592082A CN 202010429136 A CN202010429136 A CN 202010429136A CN 111592082 A CN111592082 A CN 111592082A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a water paint mist coagulant, a preparation method and application thereof, wherein the water paint mist coagulant consists of a viscosity depressant A and a flocculating agent B, the effective components of the viscosity depressant A are inorganic metal salt and cationic monomer, and the mass ratio of the inorganic metal salt to the cationic monomer is (8-12):1, the mass percent of the effective components in the viscosity depressant A is 5-40%; the effective components of the flocculant B are two of xanthan gum, welan gum, polyacrylamide and lignin, and the mass percentage of the effective components in the flocculant B is 0.1-3%; through the combination and the proportion, the flocculation is rapid; the decoloring rate is high; paint slag is not easy to sink, can float upwards for a long time, and can ensure the clarity of waste water; the adhesive has good effects of tack elimination and coagulation on the water-based paint, can ensure that the water-based paint is completely tack-free, floating paint slag can be bonded into large blocks, is easy to salvage, and does not need to adjust the pH value.
Description
Technical Field
The invention relates to the technical field of paint-containing wastewater treatment, and particularly relates to a water-based paint mist coagulant, and a preparation method and application thereof.
Background
When the oily paint is used for coating, a large amount of harmful gas can be generated in the coating process due to the fact that the oily paint contains substances with toxicity such as benzene compounds and the like, the human health is damaged, and the discharged waste water seriously harms the environment. With the national concern on the protection of ecological environment and the stricter and stricter environmental protection requirements, the water-based paint uses water as a diluent, does not use an organic solvent, has good environmental protection characteristics, is nonflammable, does not contain carcinogenic substances, has little harm to people, is favored by more and more coating users, and has become a great trend in the coating field.
However, the water-based paint has the advantages of environmental protection and the disadvantage of environmental protection, and because the water-based paint is completely soluble in water, the water-based paint is difficult to separate from water, and meanwhile, the water-based paint coating wastewater can cause the breeding of microorganisms and the odor of water, so that the working environment of a coating room is deteriorated. The treatment of water paint coating wastewater has become a problem recognized in the industry.
CN103848489A discloses a high-efficiency paint mist coagulant, which is characterized by consisting of a viscosity reducing agent A and a coagulant B, wherein the volume ratio of the viscosity reducing agent A to the coagulant B is 0.5: 0.5-1; the viscosity depressant A is polysilicic acid modified melamine prepared from melamine, alkali metal silicate, aldehyde and an auxiliary agent C, and the coagulant B is a polymer formed by polymerization of a nonionic monomer; the preparation of the high-efficiency paint mist coagulant comprises the following steps: 1) preparing a viscosity reducer A: (1) diluting alkali metal silicate to prepare a solution with the mass concentration of 20-50%; adjusting the solution to pH 2-6 with acid; adjusting the temperature to be 30-60 ℃, carrying out polymerization reaction for 1-15h, and then aging for 1-6h to obtain a solution D; (2) mixing melamine and aldehyde according to a molar ratio of 1: 1-4, heating to 50-90 ℃, adding acid to adjust the pH to 2-3 after the melamine is completely dissolved, and continuing to react for 4-6 hours to obtain a solution E; (3) preparing an auxiliary agent C: mixing hydrogen peroxide and ferrous salt in a molar ratio of 2-4:1-1.5, and then putting the mixture into water, wherein the adding amount of the hydrogen peroxide is 50-100mmol/L, and the pH value is controlled to be 2-3 to obtain an auxiliary agent C; (4) selecting a solution D according to the proportion that the alkali metal silicate accounts for 0.5-15% of the total mass of the reactants; selecting a solution E according to the proportion that melamine accounts for 30-55% of the total mass of reactants; selecting the auxiliary agent C according to the proportion that the auxiliary agent C accounts for 44.5-69.5 percent of the total mass of the reactants; the reactants are solution D, solution E and auxiliary agent C; adding the solution D prepared in the step (1) into the solution E prepared in the step (2), adding the auxiliary agent C, and reacting for 1-4 h; adjusting the pH value to 8-10, and reacting for 30-60min to obtain polysilicic acid modified melamine, namely the viscosity reducer A; 2) preparing a coagulant B: dissolving 750 parts by weight of 200-750 parts by weight of nonionic monomer and 5-25 parts by weight of urea in 900-500 parts by weight of water; regulating pH to 7-8 with pH regulator, heating to 10-75 deg.C, and polymerizing for 2-24 hr to obtain transparent solution, i.e. coagulant B; 3) selecting the viscosity depressant A and the coagulant B according to the volume ratio of 0.5:0.5-1, and respectively packaging to obtain the high-efficiency paint mist coagulant
CN102351286A discloses a high-efficiency paint mist coagulant, which comprises an adhesion remover A, a floating agent B and a regulator C which are used simultaneously; wherein the viscosity depressant A is formed by combining a water-soluble quaternary ammonium type cationic polymer, an amphoteric metal salt or a polymer of the amphoteric metal salt and a surfactant, the floating agent B is an anionic polymer with the molecular weight of 800-2500 ten thousand, and the regulator C is a basic inorganic compound and is used for adjusting the pH value of the wastewater.
In the above techniques, the paint mist coagulant is in two dosage forms, that is, the viscosity depressant is used in combination with the flocculant, but in the process of implementing the embodiments of the present application, the inventors of the present application find that the above techniques have at least the following technical problems: (1) the flocculation speed is low, and the treatment efficiency is low; (2) the decoloring effect is poor, and the decoloring rate of the waste water containing aqueous paint mist is low; (3) paint slag floats completely, and finally after the water quality of wastewater is clear, the paint slag can sink, the paint slag cannot float upwards for a long time, and the water quality of the wastewater cannot be kept clear and transparent for a long time, so that the turbidity of the wastewater cannot reach the standard; (4) the viscosity depressant and the flocculating agent contain pH regulators, or the pH of the wastewater needs to be adjusted when the product is used, so the operation is complex and tedious; (5) the viscosity and flocculation eliminating effect is yet to be further improved, the viscosity of the water-based paint is not completely eliminated, floating paint slag particles are small, the floating paint slag particles are easy to disperse and are not easy to salvage.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention mainly aims to provide the water-based paint mist coagulant, the preparation method and the application thereof, and the flocculation is rapid; the decoloring rate is high; paint slag is not easy to sink, can float upwards for a long time, and can ensure the clarity of waste water; the adhesive has good effects of tack elimination and coagulation on the water-based paint, can ensure that the water-based paint is completely tack-free, floating paint slag can be bonded into large blocks, is easy to salvage, and does not need to adjust the pH value.
The technical problem to be solved by the invention is realized by the following technical scheme:
the invention provides a water paint mist coagulant, which consists of a viscosity depressant A and a flocculating agent B, wherein the effective components of the viscosity depressant A are inorganic metal salt and cationic monomer, and the mass ratio of the inorganic metal salt to the cationic monomer is (8-12):1, the mass percent of the effective components in the viscosity depressant A is 5-40%; the flocculant B comprises two active ingredients of xanthan gum, welan gum, polyacrylamide and lignin, and the mass percentage of the active ingredients in the flocculant B is 0.1-3%.
Further, the viscosity depressant A is prepared from the following raw materials in percentage by weight: 5-30% of inorganic metal salt, 0.5-3% of cationic monomer and the balance of water.
Further, the inorganic metal salt is one or more of aluminum chlorohydrate, polyaluminum ferric chloride and polyaluminum sulfate.
Further, the cationic monomer is one or more of dimethyldiallylammonium chloride, methacryloyloxyethyl trimethyl ammonium chloride and octadecyl dimethyl allyl ammonium chloride.
According to another aspect of the present invention, there is provided a method for preparing the above-mentioned water-based paint mist coagulant, comprising the steps of:
preparation of viscosity reducer A: adding inorganic metal salt into water, stirring uniformly, adding cationic monomer, stirring uniformly, and standing for later use;
preparing a flocculating agent B: adding one of xanthan gum, welan gum, polyacrylamide and lignin into water while stirring, adding another of xanthan gum, welan gum, polyacrylamide and lignin for many times, and stirring to completely dissolve the other;
and respectively packaging the viscosity reducer A and the flocculating agent B.
Further, in the preparation of the viscosity depressant A, inorganic metal salt is added into water at the temperature of 30-45 ℃, stirred for 0.8-1.2h to be completely dissolved, then cationic monomer is added, stirred for 0.8-1.2h to be completely dissolved, and placed for 4h for later use.
According to another aspect of the present invention, there is provided the use of the above-mentioned aqueous paint mist coagulant for treating aqueous paint coating waste water.
Further, it comprises the following steps:
selecting the viscosity depressant A, the flocculating agent B and the aqueous paint coating wastewater according to the volume ratio of the viscosity depressant A, the flocculating agent B and the aqueous paint coating wastewater of 1:1 (90-120);
and adding the viscosity depressant A into the aqueous paint coating wastewater, and adding the flocculating agent B after the viscosity depressant A and the aqueous paint coating wastewater are fully mixed.
The invention has the following beneficial effects:
the water paint mist coagulant consists of a viscosity depressant A and a flocculating agent B, wherein the effective components of the viscosity depressant A are inorganic metal salt and cationic monomer, and the mass ratio of the inorganic metal salt to the cationic monomer is (8-12):1, the mass percent of the effective components in the viscosity depressant A is 5-40%; the effective components of the flocculant B are two of xanthan gum, welan gum, polyacrylamide and lignin, and the mass percentage of the effective components in the flocculant B is 0.1-3%; through the combination and the proportion, the flocculation is rapid; the decoloring rate is high; paint slag is not easy to sink, can float upwards for a long time, and can ensure the clarity of waste water; the adhesive has good effects of tack elimination and coagulation on the water-based paint, can ensure that the water-based paint is completely tack-free, floating paint slag can be bonded into large blocks, is easy to salvage, and does not need to adjust the pH value.
The raw material cost for preparing the water-based paint mist coagulant is low, the water-based paint mist coagulant is green and environment-friendly, the process is simple, the production condition is easy to control, the production is stable, and the yield of the water-based paint mist coagulant finished product is high and the cost is low.
The water paint mist coagulant of the invention is applied to the treatment of water paint coating waste water, has simple treatment procedure, is not influenced by pH when in use, does not need to adjust the pH of the waste water, has convenient operation, and ensures that the overspray mist in the waste water is quickly and effectively removed, coagulated and flocculated and is separated from the water in the form of paint slag.
Detailed Description
The raw materials and equipment used in the invention are common raw materials and equipment in the field if not specified; the methods used in the present invention are conventional in the art unless otherwise specified.
Unless otherwise defined, terms used in the present specification have the same meaning as those generally understood by those skilled in the art, but in case of conflict, the definitions in the present specification shall control.
The use of "including," "comprising," "containing," "having," or other variations thereof herein, is meant to encompass the non-exclusive inclusion, as such terms are not to be construed. The term "comprising" means that other steps and ingredients can be added that do not affect the end result. The term "comprising" also includes the terms "consisting of …" and "consisting essentially of …". The compositions and methods/processes of the present invention comprise, consist of, and consist essentially of the essential elements and limitations described herein, as well as any of the additional or optional ingredients, components, steps, or limitations described herein.
All numbers or expressions referring to quantities of ingredients, process conditions, etc. used in the specification and claims are to be understood as modified in all instances by the term "about". All ranges directed to the same component or property are inclusive of the endpoints, and independently combinable. Because these ranges are continuous, they include every value between the minimum and maximum values. It should also be understood that any numerical range recited herein is intended to include all sub-ranges within that range.
As used herein, "parts by weight" or "parts by weight" are used interchangeably and can be any fixed weight expressed in milligrams, grams, or kilograms (e.g., 1mg, 1g, 2g, 5g, or 1kg, etc.). For example, a composition consisting of 1 part by weight of component a and 9 parts by weight of component b may be a composition consisting of 1g of component a +9 g of component b, or 10 g of component a +90 g of component b.
The first aspect provides a water paint mist coagulant, which consists of a viscosity depressant A and a flocculating agent B, wherein the effective components of the viscosity depressant A are inorganic metal salt and cationic monomer, and the mass ratio of the inorganic metal salt to the cationic monomer is (8-12):1, the mass percent of the effective components in the viscosity depressant A is 5-40%; the flocculant B comprises two active ingredients of xanthan gum, welan gum, polyacrylamide and lignin, and the mass percentage of the active ingredients in the flocculant B is 0.1-3%.
In the invention, the viscosity eliminating agent A can eliminate the viscosity of the water-based paint to form paint slag.
In the embodiment of the invention, the mass ratio of the inorganic metal salt to the cationic monomer is (8-12):1, more preferably, the mass ratio of the inorganic metal salt to the cationic monomer is 10: 1.
in the embodiment of the invention, the mass percentage of the effective component in the viscosity-reducing agent A is 5-40%, and the typical but non-limiting mass percentage is 5%, 10%, 15%, 20%, 25%, 30%, 35%, or 40%. When the mass percentage of the effective components in the viscosity depressant A is lower than 5 percent, small water-based paint flocs cannot be formed, and the viscosity-eliminating effect is poor; when the mass percentage of the effective components in the viscosity depressant A is higher than 40%, the viscosity depressant A has poor dispersibility, cannot be uniformly dispersed in water, and is not easy to flocculate or has poor flocculation effect in the later period, so that the slagging effect is poor.
The inorganic metal salt is not particularly limited in the present invention, and may be prepared by a known method or may be commercially available. Preferably, the inorganic metal salt is one or more of aluminum chlorohydrate, polyaluminum ferric chloride and polyaluminum sulfate; more preferably, the inorganic metal salts are aluminum chlorohydrate and polyaluminum ferric chloride.
The molecular weights of polyaluminum ferric chloride and polyaluminum sulfate used in the present invention are not particularly limited, and those having molecular weights satisfying the conditions known to those skilled in the art can be used.
The cationic monomer is not particularly limited in the present invention, and may be a cationic monomer known to those skilled in the art, and may be prepared by a known method or may be commercially available. Preferably, the cationic monomer is one or more of dimethyldiallylammonium chloride, methacryloyloxyethyl trimethyl ammonium chloride and octadecyl dimethyl allyl ammonium chloride; more preferably, the cationic monomers are dimethyldiallylammonium chloride and methacryloyloxyethyltrimethylammonium chloride.
More specifically, the viscosity depressant A is prepared from the following raw materials in percentage by weight: 5-30% of inorganic metal salt, 0.5-3% of cationic monomer and the balance of water.
The inorganic metal salt is present in a mass percentage of 5-30%, typically but not limited to 5%, 10%, 15%, 18%, 20%, 25%, 28%, or 30%.
The mass percentage of the cationic monomer is 0.5-3%, typically but not limited to 0.5%, 1%, 1.5%, 1.8%, 2%, 2.5%, 2.8%, or 3%.
The inventors surprisingly found that the effective components of the viscosity depressant A are inorganic metal salt and cationic monomer, and the mass ratio of the inorganic metal salt to the cationic monomer is (8-12): the mass percent of the effective components in the viscosity depressant A is 5-40%, the combination and the proportion achieve unexpected technical effects, the compounded viscosity depressant A can well play a role in adsorption-electric neutralization, and has a quick and effective viscosity-eliminating effect on water-based paint, so that paint slag can completely float upwards, and finally, after the water quality of wastewater is clear, the paint slag is not easy to sink, so that the paint slag floats upwards for a long time, and the clarity of the wastewater can be ensured.
In the invention, the flocculant B is used for coagulating and suspending the paint slag with viscosity removed, thereby being convenient for fishing.
In the embodiment of the present invention, the mass percentage of the effective component in the flocculant B is 0.1 to 3%, and typically, but not limited to, the mass percentage is 0.1%, 0.5%, 0.8%, 1%, 1.5%, 1.8%, 2%, 2.5%, or 3%. When the mass percentage of the effective components in the flocculating agent B is lower than 0.1%, molecular chains in water are loose and difficult to play a bridging role, and the added flocculating agent B is difficult to clear wastewater and has poor flocculating effect; when the mass percentage of the effective components in the flocculant B is higher than 3%, the interaction among molecular chains is increased, the molecular chains are difficult to stretch, the solution viscosity is increased, and the stability is poor.
The effective components of the flocculant B related in the invention are two of xanthan gum, welan gum, polyacrylamide and lignin, and the two of xanthan gum, welan gum, polyacrylamide and lignin can be combined according to any suitable proportion.
The molecular weight of the polyacrylamide in the present invention is not particularly limited, and polyacrylamide having a molecular weight satisfying conditions known to those skilled in the art may be used.
Through a large number of researches, the inventor discovers that the flocculating effect is remarkably improved by adopting two compounds of xanthan gum, welan gum, polyacrylamide and lignin as the flocculating agent B and the synergistic effect of each component and the viscosity depressant A, the flocculation is rapid, the decoloring rate is high, floating paint residues are bonded into large blocks, the floating paint residues are easy to salvage, and extra pH adjustment is not needed.
In a second aspect, there is provided a method for preparing the water-based paint mist coagulant in the first aspect, comprising the steps of:
preparation of viscosity reducer A: adding inorganic metal salt into water, stirring uniformly, adding cationic monomer, stirring uniformly, and standing for later use; more specifically, in the preparation of the viscosity depressant A, inorganic metal salt is added into water at the temperature of 30-45 ℃, stirred for 0.8-1.2h to be completely dissolved, then cationic monomer is added, stirred for 0.8-1.2h to be completely dissolved, and placed for later use after 4 h.
Preparing a flocculating agent B: adding one of xanthan gum, welan gum, polyacrylamide and lignin into water while stirring, adding another of xanthan gum, welan gum, polyacrylamide and lignin for many times, and stirring to completely dissolve the other;
and respectively packaging the viscosity reducer A and the flocculating agent B.
The raw material cost for preparing the water-based paint mist coagulant is low, the water-based paint mist coagulant is green and environment-friendly, the process is simple, the production condition is easy to control, the production is stable, and the yield of the water-based paint mist coagulant finished product is high and the cost is low.
In a third aspect, there is provided the use of the water-based paint mist coagulant of the first aspect in the treatment of water-based paint coating wastewater.
Specifically, it comprises the following steps:
selecting the viscosity depressant A, the flocculating agent B and the aqueous paint coating wastewater according to the volume ratio of the viscosity depressant A, the flocculating agent B and the aqueous paint coating wastewater of 1:1 (90-120); more preferably, the viscosity depressant A, the flocculating agent B and the aqueous paint coating wastewater are selected according to the volume ratio of 1:1:100 of the viscosity depressant A, the flocculating agent B and the aqueous paint coating wastewater;
and adding the viscosity depressant A into the aqueous paint coating wastewater, and adding the flocculating agent B after the viscosity depressant A and the aqueous paint coating wastewater are fully mixed.
The water paint mist coagulant of the invention is applied to the treatment of water paint coating waste water, has simple treatment procedure, is not influenced by pH when in use, does not need to adjust the pH of the waste water, has convenient operation, and ensures that the overspray mist in the waste water is quickly and effectively removed, coagulated and flocculated and is separated from the water in the form of paint slag.
In order to better understand the technical solutions, the technical solutions will be described in detail with reference to specific examples, which are only preferred embodiments of the present invention and are not intended to limit the present invention.
Example 1
A water paint mist coagulant consists of a viscosity depressant A and a flocculating agent B; the viscosity depressant A is prepared from the following raw materials in percentage by weight: 15% of inorganic metal salt, 1.5% of cationic monomer and the balance of water; the inorganic metal salt is polyaluminum ferric chloride; the cationic monomer is methacryloyloxyethyl trimethyl ammonium chloride.
The effective components of the flocculant B are xanthan gum and polyacrylamide, the molecular weight of the polyacrylamide is 1200 ten thousand, the mass percent of the xanthan gum in the flocculant B is 0.5%, and the mass percent of the polyacrylamide in the flocculant B is 0.5%.
The preparation method of the water-based paint mist coagulant comprises the following steps:
preparation of viscosity reducer A: adding inorganic metal salt into water at 40 ℃, stirring for 1h to completely dissolve the inorganic metal salt, adding cationic monomer, stirring for 1h to completely dissolve the cationic monomer, and standing for 4h for later use.
Preparing a flocculating agent B: adding polyacrylamide into water under stirring at room temperature, adding xanthan gum for multiple times, and stirring to dissolve completely;
and respectively packaging the viscosity reducer A and the flocculating agent B.
Example 2
A water paint mist coagulant consists of a viscosity depressant A and a flocculating agent B; the viscosity depressant A is prepared from the following raw materials in percentage by weight: 5% of inorganic metal salt, 0.5% of cationic monomer and the balance of water; the inorganic metal salt is aluminum chlorohydrate; the cationic monomer is dimethyl diallyl ammonium chloride.
The effective components of the flocculant B are xanthan gum and welan gum, and the mass percentage of the effective components in the flocculant B is 0.2%.
The preparation method of the water-based paint mist coagulant comprises the following steps:
preparation of viscosity reducer A: adding inorganic metal salt into water at 30 ℃, stirring for 1.2h to completely dissolve the inorganic metal salt, adding cationic monomer, stirring for 1.2h to completely dissolve the cationic monomer, and standing for 4h for later use.
Preparing a flocculating agent B: adding xanthan gum into water under stirring at room temperature, adding welan gum for multiple times, and stirring to completely dissolve the xanthan gum;
and respectively packaging the viscosity reducer A and the flocculating agent B.
Example 3
A water paint mist coagulant consists of a viscosity depressant A and a flocculating agent B; the viscosity depressant A is prepared from the following raw materials in percentage by weight: 25% of inorganic metal salt, 2.5% of cationic monomer and the balance of water; the inorganic metal salt is polyaluminium sulfate; the cationic monomer is octadecyl dimethyl allyl ammonium chloride.
The effective components of the flocculant B are welan gum and lignin, and the mass percentage of the effective components in the flocculant B is 2%.
The preparation method of the water-based paint mist coagulant comprises the following steps:
preparation of viscosity reducer A: adding inorganic metal salt into water at 45 ℃, stirring for 0.8h to completely dissolve the inorganic metal salt, adding cationic monomer, stirring for 0.8h to completely dissolve the cationic monomer, and standing for 4h for later use.
Preparing a flocculating agent B: adding welan gum into water under stirring at room temperature, adding lignin for multiple times, and stirring to completely dissolve the lignin;
and respectively packaging the viscosity reducer A and the flocculating agent B.
Example 4
A water paint mist coagulant consists of a viscosity depressant A and a flocculating agent B; the viscosity depressant A is prepared from the following raw materials in percentage by weight: 30% of inorganic metal salt, 3% of cationic monomer and the balance of water; the inorganic metal salt is aluminum chlorohydrate and polyaluminium sulfate; the cationic monomer is acryloyl oxyethyl trimethyl ammonium chloride and octadecyl dimethyl allyl ammonium chloride.
The effective components of the flocculant B are two of xanthan gum and lignin, and the mass percentage of the effective components in the flocculant B is 3%.
The preparation method of the water-based paint mist coagulant comprises the following steps:
preparation of viscosity reducer A: adding inorganic metal salt into water at 40 ℃, stirring for 1h to completely dissolve the inorganic metal salt, adding cationic monomer, stirring for 1h to completely dissolve the cationic monomer, and standing for 4h for later use.
Preparing a flocculating agent B: adding xanthan gum into water under stirring at room temperature, adding lignin for several times, and stirring to dissolve completely;
and respectively packaging the viscosity reducer A and the flocculating agent B.
Example 5
A water paint mist coagulant consists of a viscosity depressant A and a flocculating agent B; the viscosity depressant A is prepared from the following raw materials in percentage by weight: 24% of inorganic metal salt, 3% of cationic monomer and the balance of water; the inorganic metal salt is polyaluminum ferric chloride and polyaluminum sulfate; the cationic monomer is methacryloyloxyethyl trimethyl ammonium chloride and octadecyl dimethyl allyl ammonium chloride.
The effective components of the flocculant B are welan gum and polyacrylamide, the molecular weight of the polyacrylamide is 1200 ten thousand, and the mass percentage of the effective components in the flocculant B is 0.1%.
The preparation method of the water-based paint mist coagulant comprises the following steps:
preparation of viscosity reducer A: adding inorganic metal salt into water at 30-45 deg.C, stirring for 0.8-1.2 hr to dissolve completely, adding cationic monomer, stirring for 0.8-1.2 hr to dissolve completely, and standing for 4 hr.
The effective components of the flocculant B are welan gum and polyacrylamide, the molecular weight of the polyacrylamide is 1200 ten thousand, and the mass percentage of the effective components in the flocculant B is 0.1%.
The preparation method of the water-based paint mist coagulant comprises the following steps:
preparation of viscosity reducer A: adding inorganic metal salt into water at 40 ℃, stirring for 1h to completely dissolve the inorganic metal salt, adding cationic monomer, stirring for 1h to completely dissolve the cationic monomer, and standing for 4h for later use.
Preparing a flocculating agent B: adding the welan gum into water under stirring at room temperature, adding polyacrylamide for multiple times, and stirring to completely dissolve the polyacrylamide;
and respectively packaging the viscosity reducer A and the flocculating agent B.
Example 6
A water paint mist coagulant consists of a viscosity depressant A and a flocculating agent B; the viscosity depressant A is prepared from the following raw materials in percentage by weight: 12% of inorganic metal salt, 1% of cationic monomer and the balance of water; the inorganic metal salt is aluminum chlorohydrate and polyaluminum ferric chloride; the cationic monomer is dimethyl diallyl ammonium chloride and octadecyl dimethyl allyl ammonium chloride.
The effective components of the flocculant B are xanthan gum and polyacrylamide, the molecular weight of the polyacrylamide is 1300 ten thousand, and the mass percentage of the effective components in the flocculant B is 2%.
The preparation method of the water-based paint mist coagulant comprises the following steps:
preparation of viscosity reducer A: adding inorganic metal salt into water at 40 ℃, stirring for 1h to completely dissolve the inorganic metal salt, adding cationic monomer, stirring for 1h to completely dissolve the cationic monomer, and standing for 4h for later use.
Preparing a flocculating agent B: adding xanthan gum into water under stirring at room temperature, adding polyacrylamide for multiple times, and stirring to dissolve completely;
and respectively packaging the viscosity reducer A and the flocculating agent B.
Comparative example 1
A water paint mist coagulant consists of a viscosity depressant A and a flocculating agent B; the viscosity depressant A is prepared from the following raw materials in percentage by weight: 16.5% of inorganic metal salt and the balance of water; the inorganic metal salt is polyaluminum ferric chloride.
The effective components of the flocculant B are xanthan gum and polyacrylamide, the molecular weight of the polyacrylamide is 1200 ten thousand, the mass percent of the xanthan gum in the flocculant B is 0.5%, and the mass percent of the polyacrylamide in the flocculant B is 0.5%.
Comparative example 2
A water paint mist coagulant consists of a viscosity depressant A and a flocculating agent B; the viscosity depressant A is prepared from the following raw materials in percentage by weight: 16.5 percent of cationic monomer and the balance of water; the cationic monomer is methacryloyloxyethyl trimethyl ammonium chloride.
The effective components of the flocculant B are xanthan gum and polyacrylamide, the molecular weight of the polyacrylamide is 1200 ten thousand, the mass percent of the xanthan gum in the flocculant B is 0.5%, and the mass percent of the polyacrylamide in the flocculant B is 0.5%.
Comparative example 3
Based on example 1, the difference is only that: in the comparative example 3, the viscosity depressant A is prepared from the following raw materials in percentage by weight: 14.4% of inorganic metal salt, 2.1% of cationic monomer and the balance of water.
Comparative example 4
Based on example 1, the difference is only that: in the comparative example 4, the viscosity depressant A is prepared from the following raw materials in percentage by weight: 15.5% of inorganic metal salt, 1% of cationic monomer and the balance of water.
Comparative example 5
Based on example 1, the difference is only that: in the comparative example 5, the viscosity depressant A is prepared from the following raw materials in percentage by weight: 4% of inorganic metal salt, 0.4% of cationic monomer and the balance of water.
Comparative example 6
Based on example 1, the difference is only that: in the comparative example 6, the viscosity depressant A is prepared from the following raw materials in percentage by weight: 40% of inorganic metal salt, 4% of cationic monomer and the balance of water.
Comparative example 7
Based on example 1, the difference is only that: in this comparative example 7, polyacrylamide was replaced with polyacrylic acid.
Comparative example 8
Based on example 1, the difference is only that: in the comparative example 8, the effective component of the flocculant B is xanthan gum, and the mass percentage of the xanthan gum in the flocculant B is 1%.
Test example
In order to verify the performance of the product of the invention, the water paint mist coagulant prepared in the examples 1 to 6 and the comparative examples 1 to 8 are respectively subjected to relevant performance tests, and the test steps are as follows: selecting the viscosity depressant A, the flocculating agent B and the aqueous paint coating wastewater according to the volume ratio of 1:1:100 of the viscosity depressant A, the flocculating agent B and the aqueous paint coating wastewater; adding the viscosity depressant A into the water-containing paint coating wastewater, and touching the viscosity of the water-containing paint with a finger after the viscosity depressant A is fully mixed with the water-containing paint coating wastewater; and adding the flocculant B, observing the paint slag state, the wastewater state and the flocculation speed, and testing the decolorization rate of the wastewater.
The test results showed that the water-based paints of examples 1 to 6 and comparative examples 7 to 8 were completely tack-free and comparative examples 1 to 6 were slightly sticky to the hands with respect to the tack of the water-based paints.
For the state of the paint slag, in examples 1-6 and comparative examples 7-8, the paint slag floats upwards for a long time, and the paint slag in comparative examples 1-6 sinks; the floating paint slag in examples 1-6 and comparative examples 1-6 was bonded into large lumps, and the paint slag in comparative examples 7-8 was dispersed.
In the wastewater state, in examples 1 to 6 and comparative examples 7 to 8, the wastewater was clear and transparent for a long time, and in comparative examples 1 to 6, the wastewater gradually changed from clear to white and the turbidity increased.
As for the flocculation speed, the flocculation speed was fast in examples 1 to 6 and slow in comparative examples 1 to 8.
For decolorization ratio, the order is from large to small: example 4 > example 6 > example 5 > example 1 > example 2 > example 3 > comparative example 2 > comparative example 3 > comparative example 1 > comparative example 4 > comparative example 5 > comparative example 6 > comparative example 7 > comparative example 8, with a decolorization ratio of 97.5% in example 3 and 90% in comparative example 2.
The above-mentioned embodiments only express the embodiments of the present invention, and the description is more specific and detailed, but not understood as the limitation of the patent scope of the present invention, but all the technical solutions obtained by using the equivalent substitution or the equivalent transformation should fall within the protection scope of the present invention.
Claims (8)
1. The water-based paint mist coagulant is characterized by comprising a viscosity depressant A and a flocculant B, wherein the effective components of the viscosity depressant A are inorganic metal salt and cationic monomer, the mass ratio of the inorganic metal salt to the cationic monomer is (8-12) to 1, and the mass percent of the effective components in the viscosity depressant A is 5-40%; the flocculant B comprises two active ingredients of xanthan gum, welan gum, polyacrylamide and lignin, and the mass percentage of the active ingredients in the flocculant B is 0.1-3%.
2. The water-based paint mist coagulant of claim 1, wherein the viscosity depressant A is prepared from the following raw materials in percentage by weight: 5-30% of inorganic metal salt, 0.5-3% of cationic monomer and the balance of water.
3. The aqueous paint mist coagulant according to claim 1 wherein the inorganic metal salt is one or more of aluminum chlorohydrate, polyaluminum ferric chloride, and polyaluminum sulfate.
4. The aqueous paint mist coagulant of claim 1 wherein the cationic monomer is one or more of dimethyldiallylammonium chloride, methacryloyloxyethyltrimethyl ammonium chloride, and octadecyl dimethyl allyl ammonium chloride.
5. A process for preparing a water-based paint mist coagulant according to any one of claims 1 to 4, characterized in that it comprises the steps of:
preparation of viscosity reducer A: adding inorganic metal salt into water, stirring uniformly, adding cationic monomer, stirring uniformly, and standing for later use;
preparing a flocculating agent B: adding one of xanthan gum, welan gum, polyacrylamide and lignin into water while stirring, adding another of xanthan gum, welan gum, polyacrylamide and lignin for many times, and stirring to completely dissolve the other;
and respectively packaging the viscosity reducer A and the flocculating agent B.
6. The method for preparing the water-based paint mist coagulant according to claim 5, wherein the viscosity depressant A is prepared by adding inorganic metal salt into water at 30-45 ℃, stirring for 0.8-1.2h to completely dissolve the inorganic metal salt, adding cationic monomer, stirring for 0.8-1.2h to completely dissolve the cationic monomer, and standing for 4 h.
7. Use of the water-based paint mist coagulant according to any one of claims 1 to 4 for treating water-based paint coating waste water.
8. Use according to claim 7, characterized in that it comprises the following steps:
selecting the viscosity depressant A, the flocculating agent B and the aqueous paint coating wastewater according to the volume ratio of the viscosity depressant A, the flocculating agent B and the aqueous paint coating wastewater of 1:1 (90-120);
and adding the viscosity depressant A into the aqueous paint coating wastewater, and adding the flocculating agent B after the viscosity depressant A and the aqueous paint coating wastewater are fully mixed.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113428959A (en) * | 2021-06-16 | 2021-09-24 | 常州工程职业技术学院 | Water-based paint mist coagulant, and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351286A (en) * | 2011-07-07 | 2012-02-15 | 盐城工学院 | Preparation and application of high-efficiency paint mist coagulant |
| CN102390886A (en) * | 2011-07-07 | 2012-03-28 | 盐城工学院 | Preparation of organic/inorganic combined coating deadhesion agent and application of organic/inorganic combined coating deadhesion agent to spray painting wastewater |
| CN105413362A (en) * | 2015-12-31 | 2016-03-23 | 吴永光 | Method for processing spray exhaust gas and water curtain cabinet |
| JP6232606B1 (en) * | 2017-04-27 | 2017-11-22 | 株式会社ノアテック | Wastewater treatment method |
-
2020
- 2020-05-19 CN CN202010429136.XA patent/CN111592082A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351286A (en) * | 2011-07-07 | 2012-02-15 | 盐城工学院 | Preparation and application of high-efficiency paint mist coagulant |
| CN102390886A (en) * | 2011-07-07 | 2012-03-28 | 盐城工学院 | Preparation of organic/inorganic combined coating deadhesion agent and application of organic/inorganic combined coating deadhesion agent to spray painting wastewater |
| CN105413362A (en) * | 2015-12-31 | 2016-03-23 | 吴永光 | Method for processing spray exhaust gas and water curtain cabinet |
| JP6232606B1 (en) * | 2017-04-27 | 2017-11-22 | 株式会社ノアテック | Wastewater treatment method |
Non-Patent Citations (3)
| Title |
|---|
| 中国材料研究学会组织编写: "《中国战略性新兴产业 新材料 环境工程材料》", 30 November 2018, 中国铁道出版社 * |
| 何铁林主编: "《水处理化学品手册》", 31 May 2000, 化学工业出版社 * |
| 陈文弟: "《客车制造工艺技术》", 31 October 2002, 人民交通出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113428959A (en) * | 2021-06-16 | 2021-09-24 | 常州工程职业技术学院 | Water-based paint mist coagulant, and preparation method and application thereof |
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Application publication date: 20200828 |