CN111875116A - Paint wastewater treatment composition and treatment method - Google Patents
Paint wastewater treatment composition and treatment method Download PDFInfo
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- CN111875116A CN111875116A CN202010792935.3A CN202010792935A CN111875116A CN 111875116 A CN111875116 A CN 111875116A CN 202010792935 A CN202010792935 A CN 202010792935A CN 111875116 A CN111875116 A CN 111875116A
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- 239000003973 paint Substances 0.000 title claims abstract description 83
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 32
- 239000000203 mixture Substances 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 title abstract description 9
- 239000010865 sewage Substances 0.000 claims abstract description 56
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 54
- 239000002351 wastewater Substances 0.000 claims abstract description 43
- 239000002244 precipitate Substances 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 7
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 239000000945 filler Substances 0.000 claims description 11
- -1 polypropylene Polymers 0.000 claims description 10
- 239000004743 Polypropylene Substances 0.000 claims description 9
- 239000003945 anionic surfactant Substances 0.000 claims description 9
- 229920001155 polypropylene Polymers 0.000 claims description 9
- 229920000289 Polyquaternium Polymers 0.000 claims description 8
- 159000000007 calcium salts Chemical class 0.000 claims description 6
- 239000002270 dispersing agent Substances 0.000 claims description 6
- LDMOEFOXLIZJOW-UHFFFAOYSA-N 1-dodecanesulfonic acid Chemical compound CCCCCCCCCCCCS(O)(=O)=O LDMOEFOXLIZJOW-UHFFFAOYSA-N 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 2
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 2
- 229920001732 Lignosulfonate Polymers 0.000 claims description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- 229910000278 bentonite Inorganic materials 0.000 claims description 2
- 239000000440 bentonite Substances 0.000 claims description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 2
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 2
- NVVZQXQBYZPMLJ-UHFFFAOYSA-N formaldehyde;naphthalene-1-sulfonic acid Chemical compound O=C.C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 NVVZQXQBYZPMLJ-UHFFFAOYSA-N 0.000 claims description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 2
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 2
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 2
- 229920002401 polyacrylamide Polymers 0.000 claims description 2
- 229920005614 potassium polyacrylate Polymers 0.000 claims description 2
- 229910052903 pyrophyllite Inorganic materials 0.000 claims description 2
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 2
- NNCOOIBIVIODKO-UHFFFAOYSA-N aluminum;hypochlorous acid Chemical compound [Al].ClO NNCOOIBIVIODKO-UHFFFAOYSA-N 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 15
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract 2
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 1
- 239000001569 carbon dioxide Substances 0.000 abstract 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 abstract 1
- 229920000620 organic polymer Polymers 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000003208 petroleum Substances 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- 238000005507 spraying Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000000049 pigment Substances 0.000 description 5
- 239000008213 purified water Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 239000010842 industrial wastewater Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 244000044283 Toxicodendron succedaneum Species 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000005341 cation exchange Methods 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/425—Treatment of water, waste water, or sewage by ion-exchange using cation exchangers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
Landscapes
- 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 discloses a paint wastewater treatment composition and a treatment method, wherein the paint wastewater treatment method specifically comprises the following steps: collecting paint wastewater in a sewage tank, adding a sewage treatment agent A into the paint wastewater, then adding a sewage treatment agent B into the paint wastewater, adding a sewage treatment agent C after the sewage treatment agent is completely dispersed and paint sewage is accompanied by a small amount of precipitate, uniformly stirring, then generating a large amount of precipitate, and settling and filtering to remove precipitated impurities. The paint wastewater treatment method can remove organic polymers and heavy metals in the paint wastewater, and can convert micromolecular organic matters in the paint wastewater into carbon dioxide and water.
Description
Technical Field
The invention relates to a paint wastewater treatment composition and a treatment method.
Background
The production and application of paint have a long history, and China has used paint for thousands of years ago, and the paint used at that time is prepared from paint liquid collected from lacquer trees into natural paint. The main components of the modern paint comprise the following five major parts: (1) oil material: including drying oils and semi-drying oils, which are one of the main film-forming substances; (2) resin: including natural and artificial resins, are also part of the main film-forming material; (3) pigment: the pigment comprises coloring pigment, extender pigment and antirust pigment, and the specific varieties are quite various and are secondary film-forming substances; (4) diluting materials: comprises solvent and thinner, which is used to dissolve the above-mentioned material and adjust the consistency, and is auxiliary film-forming material; (5) auxiliary materials: comprises a drier, a curing agent, a plasticizer and a moisture-proof agent, and also belongs to an auxiliary film-forming substance.
Modern paint coating operation mostly uses a spraying technology, the spraying process usually oversprays in order to obtain due product effects, and 20-60% of paint cannot be attached to products and scatters in a spraying room. In order to maintain a normal working environment on the spot and to protect the health of workers, a wet paint mist removing system, i.e., water, is often used to remove excess paint. The composition of paint determines the composition of the paint waste water. The waste water has various organic matters, complex components, high COD content and certain toxicity.
The paint spraying waste water contains a large amount of paint slag, and the paint slag is formed by mixing oil, resin, a solvent, an auxiliary agent and the like. Thereby leading the water quality to have the characteristics of stickiness, peculiar smell, heavy color and the like. The traditional paint wastewater treatment method comprises the following steps: 1. the biochemical treatment is adopted, a certain amount of chemical agents are added into the wastewater, and the wastewater is treated by a series of processes such as a water collecting adjusting tank, a grid, neutralization coagulation, air floatation, hydrolytic acidification adjustment, an oxidation ditch, a secondary sedimentation tank, an aeration biological filter tank, effluent and the like. 2. The paint wastewater is treated by adopting a filter, a settling tank and a filter pressing mode, and the treatment method has the advantages that high-viscosity substances and wastewater easily block elements, the element replacement and operation costs are high, and the reliability is low. 3. Adopt traditional paint flocculating agent, remove to paint sediment and glue, suspend the back and salvage or adopt and scrape the sediment machine and salvage by the artifical surface of water, this kind of processing method sediment is handled incompletely, can't thoroughly clear away to the bottom of the pool, causes the cascade cabinet circulating pump to block up easily and influence the spraying effect, and paint fog is easily got rid of from the gas vent and is caused secondary pollution, and the environmental protection is hardly up to standard, and running cost is higher. Today, the environmental pollution is concerned, the traditional paint spraying wastewater treatment method is too simple, and a plurality of harmful substances cannot be removed, so that the discharge standard of industrial wastewater cannot be met. A truly scientific and effective treatment method for paint spraying wastewater is to add water treatment chemicals into the water. Only in this way, harmful substances and pollutants in the paint wastewater can be completely separated, and the water quality perspective, the pH value, the impurity content, the odor, the COD and the like can reach the industrial wastewater discharge standard required by the state.
The company applies for a patent in 2018: a paint wastewater treatment method comprises the following steps: collecting paint wastewater in a sewage tank, adding a sewage treatment agent A into the paint wastewater, then adding a sewage treatment agent B into the paint wastewater, adding a sewage treatment agent C after the sewage treatment agent is completely dispersed and paint sewage is accompanied by a small amount of precipitate, uniformly stirring, then generating a large amount of precipitate, and settling and filtering to remove precipitated impurities. However, the effects of total soluble solids, total petroleum content, heavy metal content, chemical oxygen demand, etc. treated by the treatment method are not good enough, and further improvement is needed.
Disclosure of Invention
In order to solve the technical problems, the invention provides a paint wastewater treatment composition, which consists of a wastewater treatment agent A, a wastewater treatment agent B and a wastewater treatment agent C, wherein the wastewater treatment agent A consists of 100 parts by weight of strong base, 2-10 parts by weight of a dispersing agent and 5-10 parts by weight of an anionic surfactant;
the sewage treatment agent B consists of 100 parts by weight of inorganic flocculant, 5-10 parts by weight of filler, 1-10 parts by weight of polyquaternium and 10-20 parts by weight of water-soluble calcium salt;
the sewage treatment agent C is composed of a polypropylene flocculant.
The invention also provides a paint wastewater treatment method, which specifically comprises the following steps: collecting paint wastewater in a sewage tank, adding a sewage treatment agent A into the paint wastewater, then adding a sewage treatment agent B into the paint wastewater, adding a sewage treatment agent C after the sewage treatment agent is completely dispersed and paint sewage is accompanied by a small amount of precipitate, uniformly stirring, generating a large amount of precipitate, and settling and filtering to remove precipitated impurities;
the sewage treatment agent A consists of 100 parts by weight of strong base, 2-10 parts by weight of dispersant and 5-10 parts by weight of anionic surfactant;
the sewage treatment agent B consists of 100 parts by weight of inorganic flocculant, 5-10 parts by weight of filler, 1-10 parts by weight of polyquaternium and 10-20 parts by weight of water-soluble calcium salt;
the sewage treatment agent C is composed of a polypropylene flocculant.
The using amount of the sewage treatment agent A is 0.1-3% of the mass of the paint wastewater.
The using amount of the sewage treatment agent B is 0.5-3% of the mass of the paint wastewater.
The using amount of the sewage treatment agent C is 0.1-1% of the mass of the paint wastewater.
The anionic surfactant is one or more of naphthalene sulfonate formaldehyde condensate, lignosulfonate and dodecyl sulfonate.
The polyquaternium is selected from one or more of polyquaternium-6, polyquaternium-7, polyquaternium-42 and polyquaternium-21.
The filler is selected from one or more of bentonite, pyrophyllite and montmorillonite.
The inorganic flocculant is one or more selected from polyaluminium chloride, polyaluminium sulfate, polyaluminium ferric chloride, polyaluminium ferric silicate and aluminium hydroxychloride.
The polypropylene flocculant is selected from one or more of polyacrylamide, sodium polyacrylate and potassium polyacrylate.
The paint wastewater treatment method has the advantages that three different sewage treatment agents A, B and C are adopted to be matched for use, so that macromolecular organic matters, heavy metals and micromolecular organic matters in paint wastewater are removed, the A is added, so that the sewage primarily adsorbs the heavy metals by using an anionic surfactant under the alkaline condition that the pH is 7-9, the macromolecular organic matters are removed by using an inorganic flocculant, the micromolecular organic matters are removed by using an adsorptive filler, the heavy metal ions are adsorbed by using a cation exchange type filler, and the filler and the macromolecular organic matters are further flocculated by using a polypropylene flocculant, so that the macromolecular organic matters, the heavy metals and the micromolecular organic matters are removed. Compared with other patents, the removal efficiency is more efficient by adopting the scheme of the invention.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.
The quality of the treated paint sewage is evaluated by adopting the national standard of wastewater discharge town sewer water quality standard (GB/T31962-. The quality of the water is evaluated mainly by measuring the PH value, the total soluble solid, the total petroleum content, the heavy metal content and the chemical oxygen demand.
Example 1
The paint wastewater treatment method specifically comprises the following steps: collecting paint wastewater in a sewage tank, adding a sewage treatment agent A (100 parts by weight of strong base, 5 parts by weight of dispersing agent and 8 parts by weight of anionic surfactant) into the paint wastewater to enable the pH value of the paint wastewater to be 7-9, then adding 2wt% of a sewage treatment agent B (100 parts by weight of inorganic flocculant, 8 parts by weight of filler, 5 parts by weight of polyquaternium and 15 parts by weight of water-soluble calcium salt) into the paint wastewater, adding 1wt% of a sewage treatment agent C (polypropylene flocculant) into the paint wastewater after the sewage treatment agent is completely dispersed and the paint wastewater is accompanied by a small amount of precipitate, uniformly stirring, generating a large amount of precipitate, and settling and filtering to remove precipitated impurities.
The pH value of the purified water is 7.5-7.8, the total soluble solid is 200mg/L, the total petroleum content is 0.5mg/L, the heavy metal content is less than 0.05mg/L, and the chemical oxygen demand is less than or equal to 8mg/L (COD).
Example 2
The paint wastewater treatment method specifically comprises the following steps: collecting paint wastewater in a sewage tank, adding a sewage treatment agent A (100 parts by weight of strong base, 7 parts by weight of dispersing agent and 4 parts by weight of anionic surfactant) into the paint wastewater to enable the pH value of the paint wastewater to be 7-9, then adding 2wt% of a sewage treatment agent B (100 parts by weight of inorganic flocculant, 7 parts by weight of filler, 6 parts by weight of polyquaternium and 17 parts by weight of water-soluble calcium salt) into the paint wastewater, adding 1wt% of a sewage treatment agent C (polypropylene flocculant) into the paint wastewater after the sewage treatment agent is completely dispersed and the paint wastewater is accompanied by a small amount of precipitate, uniformly stirring, generating a large amount of precipitate, and settling and filtering to remove precipitated impurities.
The pH value of the purified water is 7.5-7.8, the total soluble solid is 240mg/L, the total petroleum content is 0.8mg/L, the heavy metal content is less than 0.08mg/L, and the chemical oxygen demand is less than or equal to 9mg/L (COD).
Comparative example 1
Compared with the example 1, the sewage treatment agent A is not used, the pH value of the purified water is 7.5-7.8, the total soluble solid is 600mg/L, the total petroleum content is 5mg/L, the heavy metal content is less than 0.5mg/L, and the chemical oxygen demand is less than or equal to 30mg/L (COD).
Comparative example 2
Compared with the example 1, the sewage treatment agent B is not used, the pH value of the purified water is 7.5-7.8, the total soluble solid is 540mg/L, the total petroleum content is 3mg/L, the heavy metal content is less than 0.3mg/L, and the chemical oxygen demand is less than or equal to 18mg/L (COD).
Comparative example 3
Compared with the example 1, the sewage treatment agent C is not used, the PH value of the purified water is 7.5-7.8, the total soluble solid is 400mg/L, the total petroleum content is 1.2mg/L, the heavy metal content is less than 0.09mg/L, and the chemical oxygen demand is less than or equal to 12mg/L (COD).
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. All equivalent changes and modifications made according to the disclosure of the present invention are covered by the scope of the claims of the present invention.
Claims (10)
1. A paint wastewater treatment composition comprises a wastewater treatment agent A, a wastewater treatment agent B and a wastewater treatment agent C, wherein the wastewater treatment agent A comprises 100 parts by weight of strong base, 2-10 parts by weight of a dispersing agent and 5-10 parts by weight of an anionic surfactant;
the sewage treatment agent B consists of 100 parts by weight of inorganic flocculant, 5-10 parts by weight of filler, 1-10 parts by weight of polyquaternium and 10-20 parts by weight of water-soluble calcium salt;
the sewage treatment agent C is composed of a polypropylene flocculant.
2. The paint wastewater treatment method is characterized by comprising the following steps: collecting paint wastewater in a sewage tank, adding a sewage treatment agent A into the paint wastewater, then adding a sewage treatment agent B into the paint wastewater, adding a sewage treatment agent C after the sewage treatment agent is completely dispersed and paint sewage is accompanied by a small amount of precipitate, uniformly stirring, generating a large amount of precipitate, and settling and filtering to remove precipitated impurities;
the sewage treatment agent A consists of 100 parts by weight of strong base, 2-10 parts by weight of dispersant and 5-10 parts by weight of anionic surfactant;
the sewage treatment agent B consists of 100 parts by weight of inorganic flocculant, 5-10 parts by weight of filler, 1-10 parts by weight of polyquaternium and 10-20 parts by weight of water-soluble calcium salt;
the sewage treatment agent C is composed of a polypropylene flocculant.
3. The paint wastewater treatment method according to claim 2, wherein the amount of the sewage treatment agent A is 0.1-3% of the mass of the paint wastewater.
4. The paint wastewater treatment method according to claim 2, wherein the amount of the sewage treatment agent B is 0.5-3% by mass of the paint wastewater.
5. The paint wastewater treatment method according to claim 2, wherein the amount of the sewage treatment agent C is 0.1-1% by mass of the paint wastewater.
6. The paint wastewater treatment method according to claim 2, wherein the anionic surfactant is one or more of naphthalene sulfonate formaldehyde condensate, lignosulfonate and dodecyl sulfonate.
7. The paint wastewater treatment method according to claim 2, wherein the polyquaternium is one or more selected from polyquaternium-6, polyquaternium-7, polyquaternium-42 and polyquaternium-21.
8. The paint wastewater treatment method according to claim 2, wherein the filler is one or more selected from bentonite, pyrophyllite and montmorillonite.
9. The paint wastewater treatment method according to claim 2, wherein the inorganic flocculant is one or more selected from polyaluminium chloride, polyaluminium sulfate, polyaluminium ferric chloride, polyaluminium ferric silicate and aluminum hydroxychloride.
10. The paint wastewater treatment method according to claim 2, wherein the polypropylene flocculant is one or more selected from polyacrylamide, sodium polyacrylate and potassium polyacrylate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211189253.9A CN115385489A (en) | 2020-08-10 | 2020-08-10 | Paint wastewater treatment composition and application thereof in paint wastewater treatment |
| CN202010792935.3A CN111875116A (en) | 2020-08-10 | 2020-08-10 | Paint wastewater treatment composition and treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010792935.3A CN111875116A (en) | 2020-08-10 | 2020-08-10 | Paint wastewater treatment composition and treatment method |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113979573A (en) * | 2021-12-28 | 2022-01-28 | 莱阳市春帆漆业有限责任公司 | Coating waste filtering device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102992534A (en) * | 2011-09-16 | 2013-03-27 | 常熟科勒有限公司 | Paint wastewater treatment method |
| CN103601279A (en) * | 2013-11-29 | 2014-02-26 | 天津市双洁化工技术有限公司 | Spray paint waste water treatment agent and treatment method thereof |
| CN108975577A (en) * | 2018-08-20 | 2018-12-11 | 青岛众诚三兄弟环境工程有限公司 | A kind of Paint wastewater treatment method |
| CN111217434A (en) * | 2019-12-03 | 2020-06-02 | 广州越海生态环境科技有限公司 | High-efficiency flocculant and preparation method thereof |
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- 2020-08-10 CN CN202211189253.9A patent/CN115385489A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102992534A (en) * | 2011-09-16 | 2013-03-27 | 常熟科勒有限公司 | Paint wastewater treatment method |
| CN103601279A (en) * | 2013-11-29 | 2014-02-26 | 天津市双洁化工技术有限公司 | Spray paint waste water treatment agent and treatment method thereof |
| CN108975577A (en) * | 2018-08-20 | 2018-12-11 | 青岛众诚三兄弟环境工程有限公司 | A kind of Paint wastewater treatment method |
| CN111217434A (en) * | 2019-12-03 | 2020-06-02 | 广州越海生态环境科技有限公司 | High-efficiency flocculant and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113979573A (en) * | 2021-12-28 | 2022-01-28 | 莱阳市春帆漆业有限责任公司 | Coating waste filtering device |
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| CN115385489A (en) | 2022-11-25 |
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