CN115140798A - Sewage treatment agent for paper industry wastewater and preparation method thereof - Google Patents
Sewage treatment agent for paper industry wastewater and preparation method thereof Download PDFInfo
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- CN115140798A CN115140798A CN202210898694.XA CN202210898694A CN115140798A CN 115140798 A CN115140798 A CN 115140798A CN 202210898694 A CN202210898694 A CN 202210898694A CN 115140798 A CN115140798 A CN 115140798A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 65
- 239000010865 sewage Substances 0.000 title claims abstract description 59
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 59
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 52
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims abstract description 52
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000000440 bentonite Substances 0.000 claims abstract description 29
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 29
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000003054 catalyst Substances 0.000 claims abstract description 29
- 229920001661 Chitosan Polymers 0.000 claims abstract description 27
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000012964 benzotriazole Substances 0.000 claims abstract description 26
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims abstract description 26
- 235000019341 magnesium sulphate Nutrition 0.000 claims abstract description 26
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims abstract description 26
- 229960001763 zinc sulfate Drugs 0.000 claims abstract description 26
- 229910000368 zinc sulfate Inorganic materials 0.000 claims abstract description 26
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 3
- 239000006228 supernatant Substances 0.000 claims description 40
- 239000004927 clay Substances 0.000 claims description 37
- 238000002156 mixing Methods 0.000 claims description 23
- 239000013078 crystal Substances 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- DZSVIVLGBJKQAP-UHFFFAOYSA-N 1-(2-methyl-5-propan-2-ylcyclohex-2-en-1-yl)propan-1-one Chemical compound CCC(=O)C1CC(C(C)C)CC=C1C DZSVIVLGBJKQAP-UHFFFAOYSA-N 0.000 claims description 19
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 16
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 claims description 16
- 230000004913 activation Effects 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 13
- 239000000178 monomer Substances 0.000 claims description 13
- 239000000047 product Substances 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 11
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical group [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 claims description 8
- 238000000498 ball milling Methods 0.000 claims description 8
- 238000002425 crystallisation Methods 0.000 claims description 7
- 230000008025 crystallization Effects 0.000 claims description 7
- 229920001577 copolymer Polymers 0.000 claims description 2
- 238000010298 pulverizing process Methods 0.000 claims description 2
- 238000007334 copolymerization reaction Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 14
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 4
- 239000008394 flocculating agent Substances 0.000 description 19
- 229910021645 metal ion Inorganic materials 0.000 description 12
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 238000006116 polymerization reaction Methods 0.000 description 8
- 238000004537 pulping Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 239000000049 pigment Substances 0.000 description 6
- 238000001179 sorption measurement Methods 0.000 description 6
- 238000012216 screening Methods 0.000 description 5
- 229920002401 polyacrylamide Polymers 0.000 description 4
- 238000007873 sieving Methods 0.000 description 4
- 229920002488 Hemicellulose Polymers 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000003463 adsorbent Substances 0.000 description 3
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 3
- 125000003277 amino group Chemical group 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 230000000536 complexating effect Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 238000002386 leaching Methods 0.000 description 3
- 150000003904 phospholipids Chemical class 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 239000012629 purifying agent Substances 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 239000000344 soap Substances 0.000 description 3
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 description 3
- 229910021655 trace metal ion Inorganic materials 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000004061 bleaching Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 239000002699 waste material Substances 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
- 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
- C02F1/52—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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic 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
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
- C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The application provides a sewage treatment agent for paper industry wastewater and a preparation method thereof, and relates to the technical field of sewage treatment. A sewage treatment agent for paper industry wastewater comprises the following raw materials in parts by weight: 80-120 parts of bentonite, 20-40 parts of hydrochloric acid, 70-90 parts of aluminum hydroxide, 10-30 parts of a catalyst, 75-90 parts of sulfuric acid, 10-20 parts of chitosan, 5-10 parts of benzotriazole, 40-60 parts of magnesium sulfate, 5-10 parts of zinc sulfate and 5-10 parts of a multipolymer. The sewage treatment agent has a good treatment effect on various suspended matters and unsettlable suspended matters, and is compared with traditional polyaluminium chloride, low in cost and good in treatment effect, and the cost of wastewater treatment is reduced.
Description
Technical Field
The application relates to the technical field of sewage treatment, in particular to a sewage treatment agent for paper industry wastewater and a preparation method thereof.
Background
The paper making industry mostly adopts straw, wood pulp and the like as paper making raw materials, the pulping and paper making production generally comprises the working procedures of pulping, pulp washing, bleaching and paper making, the pulping of the paper making industry comprises alkaline pulping, chemimechanical pulping and mechanical pulping, and a large amount of waste water is generated in the pulping and paper making process, and comprises pulping and cooking waste liquid, washing waste water, bleaching waste water, paper machine white water and the like, the waste water contains a large amount of suspended matters, BOD, COD and partial toxic substances, the components are complex, the biodegradability is poor, and the waste water belongs to industrial waste water which is difficult to treat and is one of main industrial pollution sources.
The existing sewage treatment agent for the paper industry wastewater has various types, but has unsatisfactory treatment effect on the wastewater and unstable performance, and can not meet the discharge requirement after treatment. Therefore, the present application provides a sewage treatment agent for paper industry wastewater and a preparation method thereof to solve at least some of the above technical problems.
Disclosure of Invention
The application aims to provide a sewage treatment agent for paper industry wastewater, which has stable performance and better treatment effect on the wastewater,
the other purpose of the application is to provide a preparation method of the sewage treatment agent for the paper industry wastewater, the preparation method is simple and convenient in process, and the sewage treatment agent with stable performance and good treatment effect can be prepared.
The technical problem to be solved by the application is solved by adopting the following technical scheme.
On one hand, the embodiment of the application provides a sewage treatment agent for paper industry wastewater, which comprises the following raw materials in parts by weight: 80-120 parts of bentonite, 20-40 parts of hydrochloric acid, 70-90 parts of aluminum hydroxide, 10-30 parts of a catalyst, 75-90 parts of sulfuric acid, 10-20 parts of chitosan, 5-10 parts of benzotriazole, 40-60 parts of magnesium sulfate, 5-10 parts of zinc sulfate and 5-10 parts of a multipolymer.
In another aspect, an embodiment of the present application provides a method for preparing a sewage treatment agent for paper industry wastewater, including the following steps:
mixing bentonite and hydrochloric acid, adding water, heating, filtering, and collecting supernatant to obtain supernatant of activated clay;
adding aluminum hydroxide, a catalyst and sulfuric acid into the activated clay supernatant, carrying out activation treatment, cooling for crystallization, and crushing to obtain crystals;
the benzotriazole, the magnesium sulfate and the zinc sulfate are crushed, then the chitosan and the multipolymer are added, the mixture is mixed evenly, the crystal is added, and the mixture is milled and mixed by ball milling to obtain the finished product of the sewage treatment agent.
Compared with the prior art, the embodiment of the application has at least the following advantages or beneficial effects:
the sewage treatment agent comprises bentonite, hydrochloric acid, aluminum hydroxide, a catalyst, sulfuric acid, chitosan, benzotriazole, magnesium sulfate, zinc sulfate and a multipolymer, wherein the bentonite and the hydrochloric acid can be prepared into activated clay, the activated clay has strong adsorption property and great decolorizing capacity, has strong adsorbability and purifying capacity, has strong adsorption capacity on pigments and impurities, can effectively remove total phospholipid, soap and trace metal ions of grease, so metal ions, pigment impurities and the like in the paper industry wastewater can be removed, the aluminum hydroxide can be used as a water purifying agent, the benzotriazole can be used as a circulating water treatment agent, the chitosan can be used as a flocculating agent, an adsorbent and the like in water treatment, and the flocculating agent, the flocculating agent and the like can be combined with metal ions due to polar groups such as hydroxyl group, amino group and the like, so that various metal ions in the paper industry wastewater can be removed, and the polar groups can coagulate and precipitate a large amount of suspended matters and chlorinated organic matters in the wastewater through electrostatic attraction, thereby removing the magnesium sulfate and the zinc sulfate can be mixed to obtain a composite inorganic flocculating agent, the flocculating agent is easy to introduce the inorganic flocculating agent and the flocculating agent, can be prepared in an environment-friendly to the sewage treatment of the waste water, and the flocculating agent can reduce the settling cost of the waste water of the flocculating agent of the waste water The metal ions, cellulose, hemicellulose and the like have very good treatment effect.
The multipolymer introduces 2-acrylamide-2-methylpropanesulfonic acid and vinyl pyrrolidone on the basis of acrylamide, and because the shearing property of polyacrylamide is poor, the mechanical degradation is serious during pumping, and the performance is unstable when the multipolymer is used as an organic flocculant, 2-acrylamide-2-methylpropanesulfonic acid is introduced on the basis of acrylamide, 2-acrylamide-2-methylpropanesulfonic acid has a hydrophilic sulfonate group, the rigidity of a molecular main chain of the multipolymer can be improved, and the stability of the multipolymer is further improved, and the functional monomer vinyl pyrrolidone has a ring structure, and is introduced into a polymer molecular side chain, so that the complexing capability of the multipolymer can be enhanced, and the stability of the multipolymer is further improved.
In addition, the preparation method is simple and convenient in process, the activated clay is prepared from bentonite and hydrochloric acid, the bentonite contains two main components of silicon dioxide and aluminum oxide and other trace components, the aluminum oxide generates an aluminum sulfate solution during acid leaching, so that the supernatant of the activated clay can be used for a sewage treatment agent, the content of the aluminum oxide in the supernatant of the activated clay is improved through activation treatment, and then benzotriazole, magnesium sulfate, zinc sulfate, chitosan and multipolymer are added, so that the sewage treatment agent with stable performance and good treatment effect can be obtained.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below. The examples, in which specific conditions are not specified, were carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to specific examples.
The application provides a sewage treatment agent for paper industry wastewater, which comprises the following raw materials in parts by weight: 80-120 parts of bentonite, 20-40 parts of hydrochloric acid, 70-90 parts of aluminum hydroxide, 10-30 parts of a catalyst, 75-90 parts of sulfuric acid, 10-20 parts of chitosan, 5-10 parts of benzotriazole, 40-60 parts of magnesium sulfate, 5-10 parts of zinc sulfate and 5-10 parts of a multipolymer.
In the above embodiment, the sewage treatment agent comprises bentonite, hydrochloric acid, aluminum hydroxide, a catalyst, sulfuric acid, chitosan, benzotriazole, magnesium sulfate, zinc sulfate and a multipolymer, the bentonite and the hydrochloric acid can be used for preparing activated clay, the activated clay has strong adsorption performance, great decolorizing capacity, strong adsorbability and purification capacity, and strong adsorption capacity on pigments and impurities, and can effectively remove total phospholipids, soaps and trace metal ions of grease, so metal ions, pigment impurities and the like in paper industry wastewater can be removed, the aluminum hydroxide can be used as a water purifying agent, the benzotriazole can be used as a circulating water treatment agent, the chitosan can be used as a flocculating agent, an adsorbent and the like in water treatment, and the chitosan can be chelated with the metal ions due to the polar groups such as hydroxyl groups and amino groups, so that various metal ions in the paper industry wastewater can be removed, and the polar groups can attract a large amount of suspended matters and chlorinated coagulation sediments in the wastewater through static electricity, so that the magnesium sulfate and the zinc sulfate can be mixed to obtain a composite flocculating agent, and the inorganic flocculating agent is easy to introduce the multipolymerization flocculating agent and the flocculating agent into the inorganic flocculating agent, and the flocculating agent can reduce the sedimentation cost of the waste water, and the flocculating agent of the flocculating agent and the flocculating agent of the waste water of the papermaking wastewater Chlorinated organic matters, metal ions, cellulose, hemicellulose and the like have very good treatment effects.
In some embodiments of the present application, the raw materials are used in the following amounts by weight: 100 parts of bentonite, 30 parts of hydrochloric acid, 80 parts of aluminum hydroxide, 20 parts of catalyst, 82 parts of sulfuric acid, 15 parts of chitosan, 7 parts of benzotriazole, 50 parts of magnesium sulfate, 8 parts of zinc sulfate and 8 parts of multipolymer. Wherein the sulfuric acid is concentrated sulfuric acid with the content of 98 percent, and the aluminum hydroxide is anhydrous aluminum hydroxide with the content of 99 percent.
In some embodiments of the present application, the catalyst is ammonium metavanadate.
In some embodiments of the present application, the multipolymer is prepared by terpolymerization of acrylamide, 2-acrylamide-2-methylpropanesulfonic acid, and vinylpyrrolidone monomers. 2-acrylamide-2-methylpropanesulfonic acid and vinyl pyrrolidone are introduced on the basis of acrylamide, because the shearing property of polyacrylamide is poor, mechanical degradation is serious during pumping, and the performance is unstable when the polyacrylamide is used as an organic flocculant, 2-acrylamide-2-methylpropanesulfonic acid is introduced on the basis of acrylamide, 2-acrylamide-2-methylpropanesulfonic acid has a hydrophilic sulfonate group, the rigidity of a molecular main chain of a multipolymer can be improved, and the stability of the multipolymer is further improved, a functional monomer vinyl pyrrolidone has a cyclic structure, and is introduced into a molecular side chain of a polymer, the complexing capability of the multipolymer can be enhanced, so that the stability of the multipolymer is further improved, and the multipolymer contains a large amount of difficultly-degradable chlorinated organic matters in paper industry wastewater, and the multipolymer disclosed by the application chelates chlorinated organic matters in the paper industry wastewater through various chelating groups, so that the chlorinated organic matters are coagulated and precipitated, and the content of the difficultly-degradable organic matters in the wastewater is reduced.
The application also provides a preparation method of the sewage treatment agent for the paper industry wastewater, which comprises the following steps:
mixing bentonite and hydrochloric acid, adding water, heating, filtering, and collecting supernatant to obtain activated clay supernatant;
adding aluminum hydroxide, a catalyst and sulfuric acid into the activated clay supernatant, carrying out activation treatment, cooling for crystallization, and crushing to obtain crystals;
the benzotriazole, the magnesium sulfate and the zinc sulfate are crushed, then the chitosan and the multipolymer are added, the mixture is mixed evenly, the crystals are added, and the mixture is ball-milled and mixed to obtain the finished product of the sewage treatment agent.
In the embodiment, the preparation method is simple and convenient in process, the bentonite and the hydrochloric acid are used for preparing the activated clay, the bentonite contains two main components of silicon dioxide and aluminum oxide and other trace components, the aluminum oxide generates an aluminum sulfate solution during acid leaching, so that the supernatant of the activated clay can be used for a sewage treatment agent, the content of the aluminum oxide in the supernatant of the activated clay is improved through activation treatment, and then benzotriazole, magnesium sulfate, zinc sulfate, chitosan and multipolymer are added, so that the sewage treatment agent with stable performance and good treatment effect can be obtained.
In some embodiments of the present application, the heating temperature is 100-110 ℃ and the heating time is 2-6h.
In some embodiments of the present application, the activation treatment is carried out for a time period of 1 to 3 hours.
In some embodiments of the present application, the cooling temperature in the above cooling crystallization step is 5 to 10 ℃.
In some embodiments of the present application, after each comminution, the particles are passed through a 120-180 mesh screen. The components are crushed into fine powder, so that the components are uniformly mixed.
In some embodiments herein, the mixing time in the ball milling mixing step described above is 3 to 4 hours. And through ball milling and mixing, the components in the sewage treatment agent can be further mixed uniformly.
The features and properties of the present application are described in further detail below with reference to examples.
Example 1
A sewage treatment agent for paper industry wastewater is prepared by the following steps:
mixing 100g of bentonite and 30g of hydrochloric acid, adding water, heating at 105 ℃ for 4 hours, filtering, and taking supernatant to obtain supernatant of activated clay;
adding 80g of aluminum hydroxide, 20g of catalyst and 82g of sulfuric acid into the activated clay supernatant, performing activation treatment for 2 hours, cooling and crystallizing at the temperature of 8 ℃, crushing, and screening by a 150-mesh screen to obtain crystals;
pulverizing 7g of benzotriazole, 50g of magnesium sulfate and 8g of zinc sulfate, sieving with a 150-mesh sieve, adding 15g of chitosan and 8g of multipolymer, wherein the multipolymer is obtained by ternary polymerization of acrylamide, 2-acrylamide-2-methylpropanesulfonic acid and vinyl pyrrolidone monomer, mixing uniformly, adding the crystals, and ball-milling and mixing for 3.5 hours to obtain the finished product of the sewage treatment agent.
Example 2
A sewage treatment agent for paper industry wastewater is prepared by the following steps:
mixing 80g of bentonite and 20g of hydrochloric acid, adding water, heating at 100 ℃ for 2h, filtering, and taking supernatant to obtain supernatant of activated clay;
adding 70g of aluminum hydroxide, 10g of catalyst and 75g of sulfuric acid into the supernatant of the activated clay, wherein the catalyst is ammonium metavanadate, performing activation treatment for 1h, cooling and crystallizing at 5 ℃, crushing, and sieving with a 120-mesh sieve to obtain crystals;
5g of benzotriazole, 40g of magnesium sulfate and 5g of zinc sulfate are crushed, the crushed materials are sieved by a 120-mesh sieve, 10g of chitosan and 5g of multipolymer are added, wherein the multipolymer is obtained by ternary polymerization of acrylamide, 2-acrylamide-2-methylpropanesulfonic acid and vinyl pyrrolidone monomer, the crystals are added after the mixed materials are mixed evenly, and the ball milling and mixing are carried out for 3 hours, thus obtaining the finished product of the sewage treatment agent.
Example 3
A sewage treatment agent for paper industry wastewater is prepared by the following steps:
mixing 120g of bentonite and 40g of hydrochloric acid, adding water, heating at 110 ℃ for 6 hours, filtering, and taking supernatant to obtain supernatant of activated clay;
adding 90g of aluminum hydroxide, 30g of catalyst and 90g of sulfuric acid into the activated clay supernatant, wherein the catalyst is ammonium metavanadate, carrying out activation treatment for 3 hours, cooling and crystallizing at 10 ℃, crushing, and screening by a 180-mesh screen to obtain crystals;
10g of benzotriazole, 60g of magnesium sulfate and 10g of zinc sulfate are crushed, sieved by a 180-mesh sieve, and then 20g of chitosan and 10g of multipolymer are added, wherein the multipolymer is obtained by the ternary polymerization of acrylamide, 2-acrylamide-2-methylpropanesulfonic acid and vinyl pyrrolidone monomer, and after uniform mixing, the crystals are added, and then ball milling and mixing are carried out for 4 hours, thus obtaining the finished product sewage treatment agent.
Example 4
A sewage treatment agent for paper industry wastewater is prepared by the following steps:
mixing 110g of bentonite and 35g of hydrochloric acid, adding water, heating at 108 ℃ for 5 hours, filtering, and taking supernatant to obtain supernatant of activated clay;
adding 88g of aluminum hydroxide, 27g of catalyst and 85g of sulfuric acid into the activated clay supernatant, performing activation treatment for 3 hours by using the catalyst which is ammonium metavanadate, performing cooling crystallization at 6 ℃, crushing, and sieving by using a 170-mesh sieve to obtain crystals;
6g of benzotriazole, 55g of magnesium sulfate and 8g of zinc sulfate are crushed, the crushed materials are sieved by a 130-mesh sieve, 18g of chitosan and 7g of multipolymer are added, wherein the multipolymer is obtained by ternary polymerization of acrylamide, 2-acrylamide-2-methylpropanesulfonic acid and vinyl pyrrolidone monomer, the crystals are added after the mixed materials are mixed evenly, and the mixture is ball-milled and mixed for 3.5 hours to obtain the finished product of the sewage treatment agent.
Example 5
A sewage treatment agent for paper industry wastewater is prepared by the following steps:
mixing 95g of bentonite and 37g of hydrochloric acid, adding water, heating at 101 ℃ for 3h, filtering, and taking supernatant to obtain supernatant of activated clay;
adding 85g of aluminum hydroxide, 15g of catalyst and 78g of sulfuric acid into the activated clay supernatant, wherein the catalyst is ammonium metavanadate, carrying out activation treatment for 2.2h, cooling and crystallizing at 9 ℃, crushing, and screening by using a 140-mesh screen to obtain crystals;
9g of benzotriazole, 58g of magnesium sulfate and 7g of zinc sulfate are crushed, the crushed materials are sieved by a 140-mesh sieve, 18g of chitosan and 7g of multipolymer are added, wherein the multipolymer is obtained by ternary polymerization of acrylamide, 2-acrylamide-2-methylpropanesulfonic acid and vinyl pyrrolidone monomer, the crystals are added after the mixed materials are mixed evenly, and the mixture is ball-milled and mixed for 3.8 hours to obtain the finished product of the sewage treatment agent.
Example 6
A sewage treatment agent for paper industry wastewater is prepared by the following steps:
mixing 108g of bentonite and 27g of hydrochloric acid, adding water, heating for 3h at 104 ℃, filtering again, and taking supernatant to obtain supernatant of activated clay;
adding 84g of aluminum hydroxide, 13g of catalyst and 78g of sulfuric acid into the activated clay supernatant, wherein the catalyst is ammonium metavanadate, carrying out activation treatment for 2.6h, cooling and crystallizing at 9 ℃, crushing, and screening by a 175-mesh screen to obtain crystals;
8g of benzotriazole, 45g of magnesium sulfate and 9g of zinc sulfate are crushed, sieved by a 140-mesh sieve, and then 17g of chitosan and 5g of multipolymer are added, wherein the multipolymer is obtained by the ternary polymerization of acrylamide, 2-acrylamide-2-methylpropanesulfonic acid and vinyl pyrrolidone monomer, and the crystals are added after being uniformly mixed and then are ball-milled and mixed for 3 hours, thus obtaining the finished product sewage treatment agent.
Example 7
A sewage treatment agent for paper industry wastewater is prepared by the following steps:
mixing 110g of bentonite and 20g of hydrochloric acid, adding water, heating at 103 ℃ for 4h, filtering, and taking supernatant to obtain supernatant of activated clay;
adding 74g of aluminum hydroxide, 16g of catalyst and 83g of sulfuric acid into the activated clay supernatant, performing activation treatment for 2.5h by using the catalyst which is ammonium metavanadate, performing cooling crystallization at 7 ℃, crushing, and sieving by using a 160-mesh sieve to obtain crystals;
8g of benzotriazole, 57g of magnesium sulfate and 6g of zinc sulfate are crushed, sieved by a 180-mesh sieve, and then 14g of chitosan and 8g of multipolymer are added, wherein the multipolymer is obtained by the ternary polymerization of acrylamide, 2-acrylamide-2-methylpropanesulfonic acid and vinyl pyrrolidone monomer, and the crystals are added after being uniformly mixed and then are ball-milled and mixed for 3.8 hours, thus obtaining the finished product sewage treatment agent.
Example 8
A sewage treatment agent for paper industry wastewater is prepared by the following steps:
mixing 110g of bentonite and 30g of hydrochloric acid, adding water, heating at 106 ℃ for 4.5h, filtering, and taking supernatant to obtain supernatant of activated clay;
adding 82g of aluminum hydroxide, 25g of catalyst and 84g of sulfuric acid into the activated clay supernatant, performing activation treatment for 2.5 hours by using the catalyst, cooling and crystallizing at 7 ℃, crushing, and screening by using a 174-mesh screen to obtain crystals;
8g of benzotriazole, 57g of magnesium sulfate and 5g of zinc sulfate are crushed, the crushed materials are sieved by a 130-mesh sieve, 13g of chitosan and 8g of multipolymer are added, wherein the multipolymer is obtained by ternary polymerization of acrylamide, 2-acrylamide-2-methylpropanesulfonic acid and vinyl pyrrolidone monomer, the crystals are added after the mixed materials are mixed evenly, and the mixture is ball-milled and mixed for 3.7 hours to obtain the finished product of the sewage treatment agent.
Examples of the experiments
The COD value of the wastewater generated by the paper mill was measured (as the value measured before the pretreatment), and then the wastewater was divided into 5 parts, and the wastewater treatment agent prepared in example 1, example 4, example 5 and example 6 and polyaluminium chloride (control group) were added to each of the 5 parts of the wastewater, and after the treatment was completed, the COD value of the supernatant after the treatment was measured and compared with that before the treatment, and the removal rate of COD was calculated. Wherein, the COD value is measured by a potassium dichromate method for measuring the chemical oxygen demand of water quality GB/T11914-1989. The results are shown in table 1 below.
Removal rate of COD = (value measured before no treatment-value measured after treatment)/value measured before no treatment × 100%.
TABLE 1
As can be seen from Table 1, when the sewage treatment agent prepared in the embodiment of the application is used for treating the paper-making industry wastewater, the removal rate of COD (chemical oxygen demand) is obviously higher than that of polyaluminium chloride, which shows that the sewage treatment agent prepared in the embodiment of the application has a good purification effect on the paper-making industry wastewater, and the treatment effect is better than that of the polyaluminium chloride commonly used in the market.
In summary, the present application provides a sewage treatment agent for paper industry wastewater, which comprises bentonite, hydrochloric acid, aluminum hydroxide, a catalyst, sulfuric acid, chitosan, benzotriazole, magnesium sulfate, zinc sulfate and multipolymer, wherein activated clay can be prepared from bentonite and hydrochloric acid, the activated clay has strong adsorption property, great decolorizing power, strong adsorbability and purification capacity, and strong adsorption capacity on pigments and impurities, and can effectively remove total phospholipids, soaps and trace metal ions of grease, so that metal ions and pigment impurities in the paper industry wastewater can be removed, aluminum hydroxide can be used as a water purifying agent, benzotriazole can be used as a circulating flocculant, chitosan can be used as a flocculant, an adsorbent and the like in water treatment, and can be chelated with metal ions due to polar groups such as hydroxyl groups and amino groups, thereby removing various metal ions in the paper industry wastewater, and polar groups can precipitate a large amount of suspended matters and chlorinated organic matters in the wastewater through attraction, thereby removing, magnesium sulfate and zinc sulfate can be mixed to obtain a composite inorganic flocculant, and then introducing the multipolymerized copolymer, so that the sewage treatment agent and the multipolymerized wastewater can make the sewage treatment agent have a better effect of reducing the cost of the flocculant for treating paper industry wastewater, and the waste water Chlorinated organic matters, metal ions, cellulose, hemicellulose and the like have very good treatment effects.
The multipolymer introduces 2-acrylamide-2-methylpropanesulfonic acid and vinyl pyrrolidone on the basis of acrylamide, and because the shearing property of polyacrylamide is poor, the mechanical degradation is serious during pumping, and the performance is unstable when the multipolymer is used as an organic flocculant, 2-acrylamide-2-methylpropanesulfonic acid is introduced on the basis of acrylamide, 2-acrylamide-2-methylpropanesulfonic acid has a hydrophilic sulfonate group, the rigidity of a molecular main chain of the multipolymer can be improved, and the stability of the multipolymer is further improved, and the functional monomer vinyl pyrrolidone has a ring structure, and is introduced into a polymer molecular side chain, so that the complexing capability of the multipolymer can be enhanced, and the stability of the multipolymer is further improved.
In addition, the application also provides a preparation method of the sewage treatment agent for the paper industry wastewater, the preparation method has simple and convenient flow, the bentonite and the hydrochloric acid are used for preparing the activated clay, the bentonite takes silicon dioxide and aluminum oxide as two main components and also contains other trace components, the aluminum oxide generates an aluminum sulfate solution during acid leaching, so that the supernatant of the activated clay can be used for the sewage treatment agent, the content of the aluminum oxide in the supernatant of the activated clay is improved through activation treatment, and then benzotriazole, magnesium sulfate, zinc sulfate, chitosan and multipolymer are added, so that the sewage treatment agent with stable performance and good treatment effect can be obtained.
The embodiments described above are some, but not all embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
Claims (10)
1. A sewage treatment agent for paper industry wastewater is characterized by comprising the following raw materials in parts by weight: 80-120 parts of bentonite, 20-40 parts of hydrochloric acid, 70-90 parts of aluminum hydroxide, 10-30 parts of a catalyst, 75-90 parts of sulfuric acid, 10-20 parts of chitosan, 5-10 parts of benzotriazole, 40-60 parts of magnesium sulfate, 5-10 parts of zinc sulfate and 5-10 parts of a multipolymer.
2. The sewage treatment agent for the paper industry wastewater as claimed in claim 1, wherein the raw materials are respectively used in the following amounts by weight: 100 parts of bentonite, 30 parts of hydrochloric acid, 80 parts of aluminum hydroxide, 20 parts of catalyst, 82 parts of sulfuric acid, 15 parts of chitosan, 7 parts of benzotriazole, 50 parts of magnesium sulfate, 8 parts of zinc sulfate and 8 parts of multi-component copolymer.
3. The wastewater treatment agent for paper industry wastewater according to claim 1, wherein the catalyst is ammonium metavanadate.
4. The sewage treatment agent for paper industry wastewater according to claim 1, wherein the multipolymer is obtained by ternary copolymerization of acrylamide, 2-acrylamide-2-methylpropanesulfonic acid and vinyl pyrrolidone monomers.
5. A method of preparing a sewage treatment agent for paper industry waste water according to any of claims 1-4, characterized by comprising the steps of:
mixing bentonite and hydrochloric acid, adding water, heating, filtering, and collecting supernatant to obtain activated clay supernatant;
adding aluminum hydroxide, a catalyst and sulfuric acid into the activated clay supernatant, carrying out activation treatment, cooling for crystallization, and crushing to obtain crystals;
and (2) crushing benzotriazole, magnesium sulfate and zinc sulfate, adding chitosan and a multipolymer, mixing uniformly, adding the crystal, and performing ball milling and mixing to obtain the finished product sewage treatment agent.
6. The method for preparing a sewage treatment agent for paper industry wastewater according to claim 5, wherein the heating temperature is 100-110 ℃ and the heating time is 2-6h.
7. The method according to claim 5, wherein the activation treatment is carried out for 1 to 3 hours.
8. The method for preparing a sewage treatment agent for paper industry wastewater according to claim 5, wherein in the cooling crystallization step, the temperature of cooling is 5 to 10 ℃.
9. The method of claim 5, wherein the paper mill wastewater is passed through a 120-180 mesh screen after each pulverization.
10. The method for preparing the sewage treatment agent for the paper industry wastewater according to claim 5, wherein in the ball-milling mixing step, the mixing time is 3-4h.
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|---|---|---|---|---|
| US6033524A (en) * | 1997-11-24 | 2000-03-07 | Nalco Chemical Company | Selective retention of filling components and improved control of sheet properties by enhancing additive pretreatment |
| CN103641245A (en) * | 2013-12-27 | 2014-03-19 | 姚为 | Papermaking wastewater treating agent and preparation method thereof |
| CN107827216A (en) * | 2017-11-10 | 2018-03-23 | 郭栓海 | One kind printing and dyeing slurry waste water treating agent, preparation method and applications |
| JP2020037091A (en) * | 2018-09-06 | 2020-03-12 | ハイモ株式会社 | Method for treating oil-containing wastewater using water-soluble polymer and inorganic porous body |
| CN113716634A (en) * | 2021-09-17 | 2021-11-30 | 内蒙古美赢环保科技有限公司 | Preparation method of petrochemical oily sewage treatment agent |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6033524A (en) * | 1997-11-24 | 2000-03-07 | Nalco Chemical Company | Selective retention of filling components and improved control of sheet properties by enhancing additive pretreatment |
| CN103641245A (en) * | 2013-12-27 | 2014-03-19 | 姚为 | Papermaking wastewater treating agent and preparation method thereof |
| CN107827216A (en) * | 2017-11-10 | 2018-03-23 | 郭栓海 | One kind printing and dyeing slurry waste water treating agent, preparation method and applications |
| JP2020037091A (en) * | 2018-09-06 | 2020-03-12 | ハイモ株式会社 | Method for treating oil-containing wastewater using water-soluble polymer and inorganic porous body |
| CN113716634A (en) * | 2021-09-17 | 2021-11-30 | 内蒙古美赢环保科技有限公司 | Preparation method of petrochemical oily sewage treatment agent |
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