CN107032421A - Graphene lacquer mist coagulant, preparation method and its application method - Google Patents
Graphene lacquer mist coagulant, preparation method and its application method Download PDFInfo
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- CN107032421A CN107032421A CN201710391884.1A CN201710391884A CN107032421A CN 107032421 A CN107032421 A CN 107032421A CN 201710391884 A CN201710391884 A CN 201710391884A CN 107032421 A CN107032421 A CN 107032421A
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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
- 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
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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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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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Abstract
A kind of graphene lacquer mist coagulant, including A agent and B agent；Wherein A agent is formulated by the raw material of following percentage by weight：Modified graphene 0.05 0.12%, polyethylene glycol 1.3 3.3%, Sodium Polyacrylate 0.8 1.8%, complex compound 0.2 0.6%, surplus is water；B agent is formulated by the raw material of following percentage by weight：Water base calcium-base bentonite 0.06 0.12%, polyvinyl alcohol 0.1 0.9%, surplus is water；The graphene lacquer mist coagulant paint slag disappear completely it is viscous, paint slag do not attach at cascade or water curtain, in spray room air quality improve；Paint slag flocculates floatings completely, and paint slag salvaging is convenient and simple, does not influence bottom land to clear up, clear groove expense is not improved；Recirculated water is as clear as crystal, and additive amount of medicament is few, cost-effective, reduces discharge.
Description
Technical field
The invention belongs to the flocculating agent of field of industrial waste water treatment, more particularly to applied in spray room application recirculated water
A kind of graphene lacquer mist coagulant.
Background technology
Equipment is chronically exposed in air or external environment, corrosion or other chemical reactions is easily occurred, is caused to set
Standby damage, influence service life and its function, so needing the spray paint on the surface of equipment or wall, are initially adopted
With air spray painting mode, in air painting process, substantial amounts of coating cloud and organic solvent gas are produced, influence operator's is strong
Environment and air around health, severe contamination.The finishing system of blast-water washing formula paint spray booth causes application mode is generated winged
Jump, coating quality is substantially improved, and the pollution to environment significantly reduces, meanwhile, subsidiary product-lacquer mist coagulant also begins to produce.
If blast-water washing formula paint spray booth is not gone to glue, coagulated without using lacquer mist coagulant into the coating in recirculated water
It is poly-, the inside of equipment, pipeline and the pump housing can be sticked to, water route, the obstruction of gas circuit is caused so that cleaning system can not be transported normally
OK.The processing of paint slag largely uses traditional lacquer mist coagulant in current spray room application recirculated water, such as uses manosil AS glue
The lacquer mist coagulant that solution and the poly- N- dimethylaminos acrylamide aqueous solution are constituted, its cost is high, and to the two of recirculated water
Secondary seriously polluted, recirculated water is muddy and smelly phenomenon easily occurs, it is impossible to carry out long-term use, and recirculated water replacement frequency is high,
The waste and secondary pollution of water resource are caused, is unfavorable for spray painting production.
These traditional lacquer mist coagulants also have the disadvantage that：Such as paint slag can not disappear completely it is viscous, paint slag attach to cascade
Or at water curtain, cause cascade or water curtain discontinuous, cause the coating cloud molecule in air to be effectively adsorbed, and then cause factory
It is interior " flying paint " phenomenon occur, destroy finished product coating quality.For another example paint slag can not flocculate floatings completely, cause part paint slag to be sunken to water
Bottom, is not easy to salvage.
Chinese patent CN103359812A discloses a kind of efficient paint mist processing method for paint spray booth, water treatment agent bag
Component A is included for polyamide compound, B component is bentonite, component C is metallic compound flocculant.But this technology is still
There is certain deficiency, i.e., when blast-water washing formula paint spray booth is painted with water-based stoving paint, paint slag easily sinks in recirculated water
Form sediment so that paint slag is separated with recirculated water to be difficult, recirculated water must be given out light during cleaning paint slag, then bottom of pond paint slag precipitation is cleared up.
The content of the invention
An object of the present invention is to overcome the deficiencies in the prior art that there is provided a kind of graphene lacquer mist coagulant, the stone
Black alkene lacquer mist coagulant, paint slag disappear completely it is viscous, paint slag do not attach at cascade or water curtain, in spray room air quality improve, plant area
Interior nothing " flying paint " phenomenon；Paint slag flocculates floatings completely, and paint slag salvaging is convenient and simple, does not influence bottom land to clear up, clear groove expense is not improved
With；Recirculated water is as clear as crystal, and additive amount of medicament is few, cost-effective, reduces discharge.
The second object of the present invention is the preparation method for providing above-mentioned graphene lacquer mist coagulant.
The third object of the present invention is the application method for providing above-mentioned graphene lacquer mist coagulant.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of graphene lacquer mist coagulant, including A agent and B agent；
Wherein A agent is formulated by the raw material of following percentage by weight：
[01] modified graphene 0.05-0.12%；
[02] polyethylene glycol 1.3-3.3%；
[03] Sodium Polyacrylate 0.8-1.8%；
[04] complex compound 0.2-0.6%；
Water surplus；
The modified graphene is the water-soluble graphene that surface carries hydroxyl, and wherein hydroxy radical content is 0.005-0.012%;Institute
The preparation method for stating modified graphene is as follows：
1）Natural flake graphite is added in the concentrated sulfuric acid at 0-2 DEG C and stirs 2-3h；It is then slowly added into potassium peroxydisulfate and five oxygen
Change and 3-5h is stirred at two phosphorus, 20-25 DEG C, then be warming up at 40-45 DEG C and stir 24-48h, then slowly add water stirring 2-3h, then
Hydrogen peroxide is slowly added to, the suspension of glassy yellow particulate matter is obtained；The centrifugation of glassy yellow particulate matter is separated, after being eluted with water, 60-
12-24h is dried in vacuo at 65 DEG C, graphene oxide is obtained；
2）Add graphene oxide into thionyl chloride, return stirring 24-36h at 80 DEG C, be then centrifuged for separation, washed through acetone
After net, 12-18h is dried in vacuo at room temperature, graphene of the surface containing acid chloride groups is obtained；
3）Graphene of the surface containing acid chloride groups and 1,3- propane diamine are added separately in N, N '-dimethyl formamide, in nitrogen
Under gas shielded, 24-36h is stirred at 80 DEG C, N is then removed under reduced pressure, N '-dimethyl formamide, after washing with water, vacuum at room temperature
24-48h is dried, graphene of the surface with amino is obtained；
4）Graphene of the surface with amino and Cyanuric Chloride are added separately in tetrahydrofuran at 0-3 DEG C, stirring reaction 24-
After 36h, tetrahydrofuran is removed under reduced pressure, after being cleaned through ether, 12-24h is dried in vacuo at 10-15 DEG C, obtain surface containing triazine ring
Graphene；
5）By graphene of the surface containing triazine ring in N, N '-dimethyl formamide after stirring and dissolving, in 5-10h at 40 DEG C
It is slowly dropped in the N containing diatomic alcohol compounds, N '-dimethyl formamide solution, completion of dropping is after 45 DEG C of isothermal reactions
12-48h, then 90 DEG C of isothermal reaction 24-60h are warming up to, remove solvent under reduced pressure, after being cleaned through distilled water, be dried in vacuo at 50 DEG C
24-48h finished products.
Wherein step 1）The natural flake graphite is 60-200 mesh；
The consumption of the concentrated sulfuric acid is pressed per the 1kg natural flake graphites 10L concentrated sulfuric acids；
The consumption of the potassium peroxydisulfate is the 45% of natural flake graphite weight；
The consumption of the phosphorus pentoxide is the 50% of natural flake graphite weight；
The consumption of the water is 4 times of concentrated sulfuric acid volume；
The mass fraction of the hydrogen peroxide is 30%, and consumption is 0.18 times of concentrated sulfuric acid volume.
Step 2）The consumption of the thionyl chloride is pressed per 1kg graphene oxides 8L thionyl chlorides.
Step 3）The consumption of the 1,3- propane diamine is the 65% of surface graphene containing acid chloride groups weight；
The N, the consumption of N '-dimethyl formamide is pressed per graphene 4.3LN of the 1kg surfaces containing acid chloride groups, N '-dimethyl
Formamide.
Step 4）The consumption of the Cyanuric Chloride is 60% of surface with amino graphene weight；
The consumption of the tetrahydrofuran is pressed per the 1kg surfaces 3.9L tetrahydrofurans of the graphene with amino.
Step 5）The N, the consumption of N '-dimethyl formamide is pressed per graphene 2.2LN of the 1kg surfaces containing triazine ring,
N '-dimethyl formamide；
In the N containing diatomic alcohol compounds, N '-dimethyl formamide solution, the consumption of the diatomic alcohol compounds is table
The 70% of the face weight of graphene containing triazine ring, N used, the amount of N '-dimethyl formamide is pressed to be used per 1kg diatomic alcohol compounds
1.3LN, N '-dimethyl formamide.
The diatomic alcohol compounds are any one in ethylene glycol, 1,3- propane diols, l, 4- butanediols.
The preferred 0.06-0.10% of modified graphene consumption, if consumption can not be wrapped up when very few, scattered paint, it is impossible to formed
Small paint flco, the viscous effect that disappears is poor, if consumption, which is crossed, at most paints scattered aggravation, the later stage is not susceptible to flocculate or effect of flocculating
It is really poor, and then slagging effect is poor.
The polyethylene glycol mean molecule quantity is 380-420, viscosity 37-45, hydroxyl value 268-294.
The Sodium Polyacrylate molecular weight 3000-5000 ten thousand.
The complex compound is disodium ethylene diamine tetraacetate.
Wherein B agent is formulated by the raw material of following percentage by weight：
Water base calcium-base bentonite 0.06-0.12%
[05] polyvinyl alcohol 0.1-0.9%
Water surplus.
Water base calcium-base bentonite montmorillonite >=80%, whiteness 80-87, hardness 2-4.
Polyvinyl alcohol mean molecule quantity 16000-20000, acid number≤3.0%, alcoholysis degree 85-89.
The preferred 0.2-0.5% of consumption of the polyvinyl alcohol, if flocculating effect is poor at least excessively for consumption, if consumption is excessive
Then processing cost increases, and wastes medicament.
Consumption weight ratio when the A agent and B agent are used is 1：（0.5-1.5）.
The preparation method of graphene lacquer mist coagulant of the present invention, specific preparation process is as follows:
（1）The preparation of A agent：1/5-1/4 all with water is first added in a kettle., is added modified graphene, is stirred two hours
Afterwards, Ju Yi bis- Chun ﹑ Sodium Polyacrylates are added, after stirring two hours, complex compound are added, stirring is supplied remaining water after two hours and stirred
Mix uniform；
（2）The preparation of B agent：1/5-1/4 all with water is first added in a kettle., adds water base calcium-base bentonite, stirring two
After hour, polyvinyl alcohol is added, after stirring two hours, remaining water is supplied and stirs；
（3）A agent and B agent are packed respectively, the addition of A agent and B agent is determined when using according to actual process
Technique and addition.
In the present invention, graphene lacquer mist coagulant A agent acts viscous, the graphene lacquer mist coagulant B agent floating flocculation that disappears
Effect.
The application method of graphene lacquer mist coagulant of the present invention is：First toward addition A agent in coating wastewater, then by recirculated water
PH value is adjusted to 8-9, the coating in recirculated water is disappeared and is glued demulsification, is formed paint slag, is subsequently added into B agent and is flocculated so that upper one
The paint slag cohesion formed in step, facilitates next step to salvage or filter paint slag.
Wherein the amount ratio of A agent and B agent is 1：（0.5-1.5）.
Wherein the paint agent ratio of graphene lacquer mist coagulant is 2-8, and concentration of the graphene lacquer mist coagulant in recirculated water exists
30-180mg/L。
The beneficial effects of the invention are as follows：
(1) graphene lacquer mist coagulant of the invention just can solve the problem of traditional lacquer mist coagulant is present, and paint slag is complete
It totally disappeared viscous, paint slag is not attached at cascade or water curtain, and air quality is improved in spray room, and on-site is without " fly paint " phenomenon；Paint slag complete
Full flocculation is floated, and paint slag salvages convenient and simple, does not influence bottom land to clear up, clear groove expense is not improved；Recirculated water is as clear as crystal, medicament
Addition is few, cost-effective, reduces discharge.
(2) coating wastewater of traditional lacquer mist coagulant, water paint and oil paint needs separated processing, greatly reduces and sets
Standby service efficiency and production efficiency, the graphene lacquer mist coagulant that the present invention is provided includes the A with the viscous demulsification that disappears
Agent and the B agent with flocculation, its coating wastewater to oiliness, the oily mixed type of aqueous and water are applicable, water paint completely
With oil paint without separately spraying, waste water considerably increases operating efficiency, has saved cost without separately handling.
（3）Paint spray booth typically revolves the structure of bucket or venturi type using water, and both of which is to form complete water curtain,
The wind of spray room is allowed to pass through under suction function in the middle of water curtain, effective blast is the guarantor that over-sprayed paint fog is effectively absorbed by recirculated water
Card.If it is not thorough to cross spray painting destruction, paint can revolve at bucket wall or venturi swash plate in water and accumulate, and water curtain is torn without even
Continuous, wind is run from tear place, and invalid water curtain can cause paint spray booth to pass in and out air quantity imbalance, and crossing spray paint can not effectively be inhaled
Receive, cause coating cloud to splash, it is uniform that influence is painted, and easily forms tangerine peel, causes film quality to decline.The graphene coating cloud of the present invention
Flocculating agent damage capability is strong, thoroughly abolishes the viscosity of spray painting, and effective conglomerate floats, the blast of stable spray room, ability
Ensure appearance of film quality.
The graphene lacquer mist coagulant of the present invention is relatively shown in Table 1 with common lacquer mist coagulant：
Table 1
Embodiment
Below by embodiment, the invention will be further described, but not as a limitation of the invention.
Embodiment 1-5 and comparative example 1-2 formula are shown in Table 2, and the wherein hydroxy radical content of modified graphene is 0.009%, is prepared
Method is as follows：
1）The natural flake graphite of 1000g100 mesh is added in the 10L concentrated sulfuric acids at 2 DEG C and stirs 2h；It is then slowly added into 450g
Potassium peroxydisulfate and 500g phosphorus pentoxides, stir 3h at 23 DEG C, then are warming up at 43 DEG C and stir 24h, are then slowly added into 40L water
2h is stirred, 1.8L mass fractions is slow added into for 30% hydrogen peroxide, obtains the suspension of glassy yellow particulate matter；By glassy yellow
Grain thing centrifugation is separated, and after being eluted with water, 16h is dried in vacuo at 62 DEG C, graphene oxide 990g is obtained；
2）Graphene oxide 985g is added in 7.88L thionyl chlorides, return stirring 28h at 80 DEG C, is then centrifuged for separation, warp
After acetone is cleaned, 14h is dried in vacuo at room temperature, graphene 980g of the surface containing acid chloride groups is obtained；
3）Graphene 980g and 637g1,3- propane diamine of the surface containing acid chloride groups is added separately to 4.2LN, N '-dimethyl first
In acid amides, under nitrogen protection, 30h is stirred at 80 DEG C, then remove N under reduced pressure, N '-dimethyl formamide, after washing with water, room
The lower vacuum drying 30h of temperature, obtains graphene 963g of the surface with amino；
4）Graphene 960g and 576g Cyanuric Chloride of the surface with amino is added separately at 1 DEG C in 3.74L tetrahydrofurans,
After stirring reaction 30h, tetrahydrofuran is removed under reduced pressure, after being cleaned through ether, 15h is dried in vacuo at 12 DEG C, obtain surface containing triazine
The graphene 926g of ring；
5）By graphene 920g of the surface containing triazine ring in 2LN, N '-dimethyl formamide after stirring and dissolving, at 40 DEG C in
It is slowly dropped in 6h in the N that 0.84L contains 644g ethylene glycol, N '-dimethyl formamide solution, completion of dropping is after 45 DEG C of perseverances
Temperature reaction 24h, then 90 DEG C of isothermal reaction 36h are warming up to, remove solvent under reduced pressure, after being cleaned through distilled water, be dried in vacuo at 50 DEG C
30h, is made the hydroxyl water-soluble modified graphene in surface；In the modified graphene, the content of hydroxyl is 0.009%.
Wherein the polyethylene glycol trade mark is PEG400, the clear and bright Chemical Co., Ltd. in manufacturer Wenzhou;
Wherein Sodium Polyacrylate index is as follows：
Molecular weight 3000-5000 ten thousand, viscosity：2000-2500mPa.s (0.2% aqueous solution, 25 DEG C, 2# rotors, 6rpm), pH value：
8-9（0.1% aqueous solution, 25 DEG C）, manufacturer is that upper sea valley grinds Science and Technology Ltd..
Complex compound is disodium ethylene diamine tetraacetate.
Water base calcium-base bentonite index is as follows：Montmorillonite >=80%, whiteness 85, hardness 3, manufacturer's Lingshou County megalith ore deposit
Product processing factory.
Polyvinyl alcohol index is as follows：Mean molecule quantity 16000-20000, viscosity 3-70, acid number≤3.0%, alcoholysis degree 85-
89, Shenzhen of manufacturer uncle is along Chemical Co., Ltd..
Consumption is weight percentage in table, %.
Table 2
。
Comparative example 1 increases the consumption of modified graphene on the basis of embodiment 5, and comparative example 2 is on the basis of embodiment 5
On reduce the consumption of polyvinyl alcohol, preparation method be the same as Example 5.
Comparative example 3
The modified graphene of A agent in embodiment 5 is changed to modified graphene preparation process 1）In obtained graphene oxide, it is other
It is constant.
Embodiment 6-11 formula is shown in Table 3.
Table 3
。
Graphene lacquer mist coagulant embodiment 1-11 of the present invention preparation method is as follows:
（1）The preparation of A agent：First add in a kettle. all with the 1/5 of water, add modified graphene, after stirring two hours, plus
Enter Ju Yi bis- Chun ﹑ Sodium Polyacrylates, after stirring two hours, add complex compound, remaining water stirring is supplied in stirring after two hours equal
It is even；
（2）The preparation of B agent：First add in a kettle. all with the 1/5 of water, add water base calcium-base bentonite, stir two hours
Afterwards, polyvinyl alcohol is added, after stirring two hours, remaining water is supplied and stirs；
（3）A agent and B agent are packed respectively, adding technology and the addition of A agent and B agent is determined when using according to actual process
Amount.
Experiment one：550ml mineral water bottles 14 are taken, it is each to load 400ml running water, it is separately added into embodiment 1-11 and contrast
Example 1-3 graphene lacquer mist coagulant, addition sequence is 2 grams of graphene lacquer mist coagulant A agent, is shaken up；Add graphene coating cloud
2 grams of flocculating agent B agent, shakes up；Add water-soluble resin and paint 20 grams（The paint formulation is VAE emulsions（Solid content >=55%）
24.69 part, styrene-acrylic emulsion（Solid content >=45%）40.16 part, titanium dioxide（Technical grade）20.08 parts, 0.3 part of composite dispersing agent, breast
0.2 part of agent, 2.0 parts of coalescents, 0.3 part of composite anti-foaming agent, 1.5 parts of complex thickener, 11.05 parts of water）, shake up；Stand 1
Hour observation, it is found that embodiment 1-11 paint slags all float up to the water surface, water quality clarification is painted in flocculation completely, water without small
Grain paint slag, embodiment 1-11 paint slag Floatation Rate reaches 99.9%；And the paint slag salvaged, is loose poroid thing, without viscous
Property, it will not stick on equipment or wall of a container face, be easy to personnel to salvage, the effect of salvaging is good.
The slagging effect of comparative example 1 is poor, and floatation surface on only 93% is remaining to sink to the bottom or be suspended in water, and salvages
The paint slag gone out, is easily adhered in equipment or wall of a container face, salvages effect bad.The slagging effect of comparative example 2 is poor, only
89% floats to the water surface, remaining to sink to the bottom or be suspended in water, and the paint slag salvaged, and is easily adhered in equipment or appearance
On the wall of device, effect is salvaged bad.The slagging effect of comparative example 3 is poor, and floatation surface on only 94% is remaining to sink to the bottom or hang
Float in water, and the paint slag salvaged, it is easily adhered in equipment or wall of a container face, salvages effect bad.
Experiment two：550ml mineral water bottles 14 are taken, it is each to load 400ml running water, it is separately added into embodiment 1-11 and contrast
Example 1-3 graphene lacquer mist coagulant, addition sequence is 1 gram of graphene lacquer mist coagulant A agent, is shaken up；Add graphene coating cloud
1 gram of flocculating agent B agent, shakes up；Add oil-soluble resin and paint 20 grams（The paint formulation is 39-40 parts of toluene di-isocyanate(TDI), three
10-11 parts of hydroxymethyl-propane, 49-52 parts of mixed solvent）, shake up；Stand 1 hour and observe, it is found that embodiment 1-11 paint slags are complete
Portion is floated up in the water surface, water quality clarification, paint flocculation completely, water without little particle paint slag, and embodiment 1-11 paint slag Floatation Rate is equal
Reach 99.9%；And the paint slag salvaged, is loose poroid thing, inviscid, will not stick to equipment or wall of a container face
On, it is easy to personnel to salvage, the effect of salvaging is good.
The slagging effect of comparative example 1 is poor, and floatation surface on only 93% is remaining to sink to the bottom or be suspended in water, and salvages
The paint slag gone out, is easily adhered in equipment or wall of a container face, salvages effect bad.The slagging effect of comparative example 2 is poor, only
90% floats to the water surface, remaining to sink to the bottom or be suspended in water, and the paint slag salvaged, and is easily adhered in equipment or appearance
On the wall of device, effect is salvaged bad.The slagging effect of comparative example 3 is poor, and floatation surface on only 95% is remaining to sink to the bottom or hang
Float in water, and the paint slag salvaged, it is easily adhered in equipment or wall of a container face, salvages effect bad.
Experiment three：
Graphene lacquer mist coagulant embodiment 1-8 of the present invention and comparative example 1-3 is used to handle certain zinc-rich, rich these high density of iron
Priming paint paints recirculated water, and wherein COD is 6000mg/L, and the content of heavy metal ion is 800mg/L, and inorganic agent consumption is, with
1000ml recirculated water meters, addition sequence is 5 grams of graphene lacquer mist coagulant A agent, is stirred；Add graphene lacquer mist coagulant
5 grams of B agent, stirs；Stand 1 hour and detect.4 and the inorganic agent of the present invention processing zinc-rich of table 5, richness are the results are shown in Table after processing
Iron high density priming paint spray painting recirculated water, the usage cycles of recirculated water were up to more than 7 months, and comparative example is at maximum up to 3 months.
Table 4
。
Table 5
。
It can go out to find out from above-mentioned table, the effect of embodiment 5 is optimal.
Experiment four：
The embodiment of the present invention 5 and comparative example 1-3 are used for the recirculated water used in afore-mentioned test one during paint spraying（COD is
6000mg/L）Processing, method is as follows：
1st, the preparation of solution：Match somebody with somebody total water consumption of the groove in spraying equipment first, add lacquer mist coagulant A agent 2-3 by water per ton
Kilogram and 2-3 kilograms of lacquer mist coagulant B agent calculate input medicament, while opening water pump, tank liquor is stirred, controlled molten
The pH value of liquid is between 8-9（Tested with test paper）；
2nd, the addition of medicament：The addition of lacquer mist coagulant should be determined according to the species and consumption of paint, for spray painting consumption
20%, and lacquer mist coagulant A Ji ︰ lacquer mist coagulant B agent is 1 ︰ 1（If certain workaday paint consumption is 300 kilograms, then coating cloud
The addition of flocculating agent A agent and lacquer mist coagulant B agent is 60 kilograms）, treat lacquer mist coagulant with paint fully contacted in water,
After well mixed, paint slag Floatation Rate can reach more than 99%, then by hand or the paint slag of floating is salvaged the water surface i.e. by plant equipment
Can；
3rd, quality control：（1）, with groove when, the water of each cell body is first added to defined position, according to total Water in recirculated water
Different location adds lacquer mist coagulant A agent and lacquer mist coagulant B agent, while opening water pump, tank liquor is circulated 20 minutes；（2）, it is every
After its class of opening, water pump should be opened and circulate trough inner water 20 minutes, then by lacquer mist coagulant A agent and lacquer mist coagulant B agent in difference
Place added in the method that is continuously added dropwise；（3）, cause tank liquor to reduce because of volatilization or the other reasonses such as tank liquor seepage naturally, should
Water is added in time to normal level of liquid, in order to avoid influence coating cloud flocculating result；（4）, change groove：In order to prevent bacterial growth from being sent out with tank liquor
It is smelly, need periodically to change tank liquor.
Using effect is to such as table 6.
Table 6
Heavy metal ion content uses aas determination in table；Turbidity is tested using nephelometer；COD uses permanganimetric method
Tested；See-through is tested using see-through instrument；Electrical conductivity is tested using conductivity meter.
Claims (10)
1. a kind of graphene lacquer mist coagulant, it is characterised in that including A agent and B agent；Wherein A agent by following percentage by weight original
Material is formulated：Modified graphene 0.05-0.12%, polyethylene glycol 1.3-3.3%, Sodium Polyacrylate 0.8-1.8%, complex compound
0.2-0.6%, surplus is water；B agent is formulated by the raw material of following percentage by weight：Water base calcium-base bentonite 0.06-0.12%,
Polyvinyl alcohol 0.1-0.9%, surplus is water.
2. graphene lacquer mist coagulant according to claim 1, it is characterised in that the consumption when A agent and B agent are used
Weight ratio is 1：（0.5-1.5）.
3. graphene lacquer mist coagulant according to claim 1, it is characterised in that modified graphene described in A agent is table
Face carries the water-soluble graphene of hydroxyl, and wherein hydroxy radical content is 0.005-0.012%.
4. graphene lacquer mist coagulant according to claim 1 or 2, it is characterised in that modified graphene described in A agent is used
Measure as 0.06-0.10%.
5. graphene lacquer mist coagulant according to claim 1, it is characterised in that polyethylene glycol average mark described in A agent
Son amount is 380-420, and hydroxyl value is 268-294.
6. the preparation method of graphene lacquer mist coagulant according to claim 1, it is characterised in that polypropylene described in A agent
Sour sodium molecule amount is 3000-5000 ten thousand.
7. graphene lacquer mist coagulant according to claim 1, it is characterised in that water base calcium-base bentonite described in B agent
Montmorillonite >=80%, whiteness 80-87, hardness 2-4.
8. graphene lacquer mist coagulant according to claim 1, it is characterised in that polyvinyl alcohol average mark described in B agent
Son amount is 16000-20000, acid number≤3.0%, alcoholysis degree 85-89.
9. the preparation method of graphene lacquer mist coagulant according to claim 1, it is characterised in that once including following step
Suddenly：
（1）The preparation of A agent：1/5-1/4 all with water is first added in a kettle., is added modified graphene, is stirred two hours
Afterwards, Ju Yi bis- Chun ﹑ Sodium Polyacrylates are added, after stirring two hours, complex compound are added, stirring is supplied remaining water after two hours and stirred
Mix uniform；
（2）The preparation of B agent：1/5-1/4 all with water is first added in a kettle., adds water base calcium-base bentonite, stirring two
After hour, polyvinyl alcohol is added, after stirring two hours, remaining water is supplied and stirs.
10. the application method of graphene lacquer mist coagulant according to claim 1, it is characterised in that once including following step
Suddenly：It is first to be adjusted toward addition A agent in coating wastewater, then by the pH value of recirculated water to 8-9, the coating in recirculated water is disappeared and glue demulsification,
Paint slag is formed, B agent is subsequently added into and is flocculated so that the paint slag cohesion formed in previous step, facilitates next step to paint
Slag is salvaged or filtered；A agent, B agent weight ratio are 1 when using：（0.5-1.5）.
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| CN107963624A (en) * | 2017-09-14 | 2018-04-27 | 葛彬斌 | A kind of preparation method of toughness reduced graphene |
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|---|---|---|---|---|
| CN202080967U (en) * | 2011-04-08 | 2011-12-21 | 天津市汇源印刷有限公司 | Comprehensive treatment device for water used for printing workshop |
| CN203999216U (en) * | 2014-08-01 | 2014-12-10 | 黄华曾 | A kind of integrated recirculating water processing unit that sprays paint |
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2017
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| CN202080967U (en) * | 2011-04-08 | 2011-12-21 | 天津市汇源印刷有限公司 | Comprehensive treatment device for water used for printing workshop |
| CN203999216U (en) * | 2014-08-01 | 2014-12-10 | 黄华曾 | A kind of integrated recirculating water processing unit that sprays paint |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107963624A (en) * | 2017-09-14 | 2018-04-27 | 葛彬斌 | A kind of preparation method of toughness reduced graphene |
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