CN109179814B - Method for treating sewage by combined advanced oxidation - Google Patents
Method for treating sewage by combined advanced oxidation Download PDFInfo
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- CN109179814B CN109179814B CN201811414065.5A CN201811414065A CN109179814B CN 109179814 B CN109179814 B CN 109179814B CN 201811414065 A CN201811414065 A CN 201811414065A CN 109179814 B CN109179814 B CN 109179814B
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- ultraviolet catalytic
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- 239000010865 sewage Substances 0.000 title claims abstract description 83
- 230000003647 oxidation Effects 0.000 title claims abstract description 53
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000003197 catalytic effect Effects 0.000 claims abstract description 57
- 230000001590 oxidative effect Effects 0.000 claims abstract description 34
- 239000007800 oxidant agent Substances 0.000 claims abstract description 31
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 25
- 239000000945 filler Substances 0.000 claims abstract description 25
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 11
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 11
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 claims abstract description 11
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 41
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 16
- 238000001179 sorption measurement Methods 0.000 claims description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 12
- 229910052760 oxygen Inorganic materials 0.000 claims description 12
- 239000001301 oxygen Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims description 6
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 6
- PLDDOISOJJCEMH-UHFFFAOYSA-N neodymium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Nd+3].[Nd+3] PLDDOISOJJCEMH-UHFFFAOYSA-N 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 5
- 239000004917 carbon fiber Substances 0.000 claims description 5
- 239000002351 wastewater Substances 0.000 claims description 5
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 4
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical class Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 claims description 4
- 239000005751 Copper oxide Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- HGWOWDFNMKCVLG-UHFFFAOYSA-N [O--].[O--].[Ti+4].[Ti+4] Chemical compound [O--].[O--].[Ti+4].[Ti+4] HGWOWDFNMKCVLG-UHFFFAOYSA-N 0.000 claims description 3
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 3
- 229910000428 cobalt oxide Inorganic materials 0.000 claims description 3
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 claims description 3
- 229910000431 copper oxide Inorganic materials 0.000 claims description 3
- 229910001940 europium oxide Inorganic materials 0.000 claims description 3
- 229940075616 europium oxide Drugs 0.000 claims description 3
- AEBZCFFCDTZXHP-UHFFFAOYSA-N europium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Eu+3].[Eu+3] AEBZCFFCDTZXHP-UHFFFAOYSA-N 0.000 claims description 3
- 229910001938 gadolinium oxide Inorganic materials 0.000 claims description 3
- 229940075613 gadolinium oxide Drugs 0.000 claims description 3
- CMIHHWBVHJVIGI-UHFFFAOYSA-N gadolinium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Gd+3].[Gd+3] CMIHHWBVHJVIGI-UHFFFAOYSA-N 0.000 claims description 3
- 239000002808 molecular sieve Substances 0.000 claims description 3
- 229910000480 nickel oxide Inorganic materials 0.000 claims description 3
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 3
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 claims description 3
- MMKQUGHLEMYQSG-UHFFFAOYSA-N oxygen(2-);praseodymium(3+) Chemical compound [O-2].[O-2].[O-2].[Pr+3].[Pr+3] MMKQUGHLEMYQSG-UHFFFAOYSA-N 0.000 claims description 3
- SWELZOZIOHGSPA-UHFFFAOYSA-N palladium silver Chemical compound [Pd].[Ag] SWELZOZIOHGSPA-UHFFFAOYSA-N 0.000 claims description 3
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 229910003447 praseodymium oxide Inorganic materials 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 229910001925 ruthenium oxide Inorganic materials 0.000 claims description 3
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 claims description 3
- 229910001954 samarium oxide Inorganic materials 0.000 claims description 3
- 229940075630 samarium oxide Drugs 0.000 claims description 3
- FKTOIHSPIPYAPE-UHFFFAOYSA-N samarium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Sm+3].[Sm+3] FKTOIHSPIPYAPE-UHFFFAOYSA-N 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 3
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical class [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- 239000005416 organic matter Substances 0.000 claims description 2
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical class OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 230000015556 catabolic process Effects 0.000 abstract description 4
- 238000006731 degradation reaction Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 239000002910 solid waste Substances 0.000 abstract description 3
- 238000006555 catalytic reaction Methods 0.000 abstract description 2
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- HHVIBTZHLRERCL-UHFFFAOYSA-N sulfonyldimethane Chemical compound CS(C)(=O)=O HHVIBTZHLRERCL-UHFFFAOYSA-N 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 150000003384 small molecules Chemical class 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012824 chemical production Methods 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 230000001699 photocatalysis Effects 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- BTJIUGUIPKRLHP-UHFFFAOYSA-N 4-nitrophenol Chemical compound OC1=CC=C([N+]([O-])=O)C=C1 BTJIUGUIPKRLHP-UHFFFAOYSA-N 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000149 chemical water pollutant Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- UBEWDCMIDFGDOO-UHFFFAOYSA-N cobalt(II,III) oxide Inorganic materials [O-2].[O-2].[O-2].[O-2].[Co+2].[Co+3].[Co+3] UBEWDCMIDFGDOO-UHFFFAOYSA-N 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000002135 nanosheet Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000009279 wet oxidation reaction Methods 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
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
-
- 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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/32—Details relating to UV-irradiation devices
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)
- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention discloses a method for treating sewage by combined advanced oxidation, which comprises the steps of firstly introducing sewage into an ultraviolet catalytic reactor, and simultaneously adding an oxidant to decompose organic matters in the sewage, wherein the organic matters can be subjected to ultraviolet catalytic oxidation decomposition; then the sewage is led into a porous carbon filler electrolytic reactor, and decomposed organic molecules which cannot be oxidized by ultraviolet catalysis in the sewage are destroyed; finally, the sewage is introduced into an ultraviolet catalytic reactor, and simultaneously an oxidant is added to oxidize small molecular organic matters in the sewage into carbon dioxide and water. The invention has the advantages of high degradation efficiency, simple structure, safe and reliable operation, little solid waste or dangerous waste generation in the operation process, long service life, easy realization of standard emission, easy realization of automation and the like.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a method for treating sewage by combining advanced oxidation.
Background
With the development of chemical industry, the amount of chemical wastewater produced is rapidly increased, and the wastewater produced in chemical production is different from domestic wastewater and has the characteristics of toxicity, difficult degradation, high salt, high COD and the like. Such water is almost difficult to biochemically produce. Advanced oxidation is widely applied to the sewage difficult to biochemically degrade at present, such as Fenton oxidation, photocatalytic oxidation, high-temperature wet catalytic oxidation and other technologies. Fenton oxidation only breaks down organic matters in sewage into small molecules or opens loops, and a large amount of dangerous waste iron mud is produced at the same time; photocatalytic oxidation is only Fenton-like, and can only degrade some organic matters which are easy to degrade, such as methanol, formic acid and the like; the high-temperature wet oxidation requires high-temperature and high-pressure harsh conditions, and has the advantages of large equipment investment, high running cost and low safety.
A large number of application researches show that the oxidation rate and the efficiency of a single oxidation technical means can not meet the requirement of degrading high-concentration organic pollutants, and the corresponding limitation exists.
Patent (CN 207903974U) discloses a sewage advanced oxidation system, which replaces an ozone generator by a way of generating ozone by reacting an ultraviolet lamp with oxygen, but has limited treatment range, such as DMF, DMSO, etc., can not be degraded by the organic matters. Moreover, the single Fenton oxidation degradation sewage has no outstanding effect, can treat common sewage with organic matter concentration, and is difficult to reach the standard for the sewage with poor biodegradability which is difficult to degrade. The patent (CN 108033522A) discloses an electrocatalytic coupling advanced oxidation system, provides a method for synthesizing a three-dimensional hexagram Co3O4 and nano-sheet stacked flower-shaped CuO electrode material, and applies the method to the electrocatalytic coupling advanced oxidation system for sewage treatment, wherein the removal rate of p-nitrophenol can reach more than 98 percent. The patent (CN 107673460 a) discloses an advanced oxidation device for wastewater treatment, which can reduce the working difficulty of workers in a sewage station, and can stably generate OH for wastewater treatment by only putting a fixed proportion of oxidant and initiator into the device. The device adopts Fenton oxidation method, and can only decompose organic matters in sewage into small molecules or open loops. Patent (CN 205740594U) discloses a system for treating sewage by using a heterogeneous catalytic oxidation coupling technology, the device is suitable for treating landfill leachate, and the subsequent treatment needs to be further carried out by adopting a biochemical technology or a membrane technology, so that the working procedure is longer.
Disclosure of Invention
The invention aims to provide a method for treating sewage by combining advanced oxidation. The method for treating sewage by combining the advanced oxidation technology has high treatment efficiency and little solid waste or dangerous waste in the operation process.
The technical scheme of the invention is as follows:
a method for combined advanced oxidation treatment of wastewater, comprising the steps of:
step one: introducing sewage into an ultraviolet catalytic reactor, adding an oxidant, and decomposing organic matters in the sewage through ultraviolet catalytic oxidation for 0.1-100 hours;
Step two: introducing the sewage subjected to ultraviolet catalytic oxidation in the first step into a porous carbon filler electrolysis reactor, and electrifying for 0.1-100 hours to destroy decomposed organic molecules in the sewage which cannot be subjected to ultraviolet catalytic oxidation in the first step;
step three: introducing the electrolyzed sewage in the second step into an ultraviolet catalytic reactor, adding an oxidant, and oxidizing small molecular organic matters in the sewage into carbon dioxide and water through ultraviolet catalytic oxidation for 0.1-100 hours.
On the basis of the technical scheme, the invention also has the following further measures:
The oxidant in the first step or the third step is one or more of the following oxidants: hydrogen peroxide, ozone, persulfates, hypochlorites, chlorates, perchlorates, and percarbonates; the oxidant enters the ultraviolet catalytic reactor through the oxidant dosing device.
The oxidant ozone is generated by irradiating an ultraviolet lamp in an ultraviolet catalytic reactor by introducing oxygen through an oxygen conveying device.
The ultraviolet lamp in the ultraviolet catalytic reactor is a sleeve, the inner layer is an ultraviolet lamp tube, the outer layer is a sleeve, oxygen is introduced between the ultraviolet lamp tube and the sleeve, ozone is generated by ultraviolet irradiation, and the ozone can be used as an oxidant. The ultraviolet lamp tube adopts an electrodeless ultraviolet lamp tube excited by electromagnetic waves.
The sewage entering the first step is precipitated or filtered to remove solid impurities and then is introduced into the ultraviolet catalytic reactor of the first step.
The PH value of the sewage treated in the step one is adjusted to be more than or equal to 7 before the sewage is led into the porous carbon filler electrolytic reactor.
And (3) after the PH value of the sewage treated in the step one is regulated, the sewage is adsorbed by a porous adsorption material before being introduced into a porous carbon filler electrolytic reactor, and residual high polymer organic matters are removed.
The porous adsorption material is one or more of the following adsorption materials: activated carbon, carbon fiber, macroporous resin, molecular sieve and porous silica gel.
The surface of the porous carbon filler in the second step is loaded with one or more of the following substances: manganese dioxide, nickel oxide, iron oxide, platinum, palladium silver, copper oxide, cobalt oxide, titanium titanium dioxide, ruthenium oxide, lanthanum oxide, cerium oxide, neodymium oxide, praseodymium oxide, samarium oxide, europium oxide, gadolinium oxide.
And (3) pulse current is introduced between the positive electrode and the negative electrode in the porous carbon filler electrolytic reactor in the second step.
The invention has the following beneficial effects:
1. The ultraviolet oxidant is adopted for catalytic oxidation, organic matters which are easy to degrade in sewage are decomposed, and meanwhile, high-molecular soluble organic matters are decomposed into soluble small-molecular organic matters, so that the ultraviolet oxidant has the advantages of being strong in anti-fouling capability, high in catalytic oxidation efficiency, and capable of reducing energy consumption of a subsequent electrolytic reactor, and more importantly, preventing the high-molecular organic matters from being adsorbed on the surface of the porous carbon filler in the electrolytic reactor, so that the filler is inactive.
2. The sewage after the ultraviolet light catalytic oxidation and the porous carbon filler electrolysis is subjected to the ultraviolet light catalytic oxidation, the organic matters of small molecules in the sewage after the first two steps of treatment are further thoroughly degraded and mineralized, and the sewage is treated by the three-step combined advanced oxidation technology, so that the method has the advantages of high treatment efficiency, less solid waste or dangerous waste in the operation process, reliable and safe operation, easy realization of standard emission, easy realization of automation and the like.
3. The ultraviolet lamp tube in the ultraviolet catalytic reactor is a sleeve, oxygen is introduced between the ultraviolet lamp and the sleeve, ozone is generated through ultraviolet irradiation, the ozone is introduced into an oxidant, and the ozone is generated simultaneously by utilizing ultraviolet catalysis as the oxidant, so that the ultraviolet catalytic reactor has the advantages of simple structure and low investment cost.
4. The ultraviolet lamp tube in the ultraviolet catalytic reactor adopts an electrodeless ultraviolet lamp tube excited by electromagnetic waves, so that the ultraviolet catalytic reactor has the advantages of high degradation efficiency, low running power consumption and long service life when not only carrying out catalytic oxidation on organic matters in sewage by ultraviolet light during running, but also having the synergistic effect of the electromagnetic waves.
5. The water with the PH value adjusted is adsorbed by the porous adsorption material to remove residual high molecular organic matters, so that the high molecular organic matters are prevented from being adsorbed on the surface of the porous carbon filler in the electrolytic reactor, and the method has the advantages of simple process, safety and reliability.
6. The surface of the porous carbon filler is loaded with metal or metal oxide, pulse current is introduced between the positive electrode and the negative electrode in the porous carbon filler electrolytic reactor, and the porous carbon filler electrolytic reactor has the advantages of high electrolytic efficiency, simple process and low running cost.
Drawings
Fig. 1 is a schematic diagram of the apparatus of the present invention.
Wherein: 1 ultraviolet catalytic reactor I, 2 porous carbon filler electrolytic reactor, 3 porous carbon filler, 4 ultraviolet catalytic reactor II, 5 ultraviolet lamp II, 6 oxidant dosing device II, 7 oxygen transmission device II, 8 electrode, 9 PH value regulation dosing device, 10 oxygen transmission device I, 11 oxidant dosing device I, 12 ultraviolet lamp I.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples of the specification.
The ultraviolet lamp in the ultraviolet catalytic reactor is a sleeve, the inner layer is an ultraviolet lamp tube, the outer layer is a sleeve, and oxygen is introduced between the ultraviolet lamp tube and the sleeve. The ultraviolet lamp tube in the ultraviolet catalytic reactor adopts an electrodeless ultraviolet lamp tube excited by electromagnetic waves. Pulse current is introduced between the positive electrode and the negative electrode in the porous carbon filler electrolytic reactor. The surface of the porous carbon filler is loaded with one or more of the following substances: manganese dioxide, nickel oxide, iron oxide, platinum, palladium silver, copper oxide, cobalt oxide, titanium titanium dioxide, ruthenium oxide, lanthanum oxide, cerium oxide, neodymium oxide, praseodymium oxide, samarium oxide, europium oxide, gadolinium oxide.
Example 1
The sewage treated in this example was a dimethylsulfoxide-containing sewage produced during the production of carbon fibers, which was obtained from Jiangsu certain company, and had cod=550 mg/L and a dimethylsulfoxide content of 1050mg/L.
The sewage treatment method comprises the following steps:
1) The sewage is firstly precipitated or filtered to remove solid impurities, then is introduced into an ultraviolet catalytic reactor I, hydrogen peroxide is added through an oxidant dosing device, and some easily degradable organic matters in the water are decomposed into carbon dioxide and water through ultraviolet catalytic oxidation for 0.1 hour, wherein COD=160 mg/L, 350mg/L and 650mg/L of dimethyl sulfoxide are contained in the water after the treatment.
2) The PH value of the sewage after ultraviolet catalytic oxidation is regulated to 7, and residual high molecular organic matters are removed through adsorption of an active carbon porous adsorption material, then the sewage is introduced into a porous carbon filler electrolytic reactor, the electric current is applied for 0.1 hour, the voltage is 11V, dimethyl sulfoxide molecules in the sewage are destroyed, and the COD=165 mg/L, the dimethyl sulfoxide content 10mg/L and the dimethyl sulfone content 5mg/L of the water after the treatment are obtained.
3) Introducing the electrolyzed sewage into an ultraviolet catalytic reactor II, adding ozone through an oxidant dosing device, and oxidizing micromolecular organic matters in the sewage into carbon dioxide and water through ultraviolet catalytic oxidation for 0.1 hour, wherein COD=35 mg/L, 5mg/L and 10mg/L of dimethyl sulfoxide.
Example 2
The sewage treated in this example was a dimethylsulfoxide-containing sewage produced during the production of carbon fibers, which was obtained from Jiangsu certain company, and had cod=550 mg/L and a dimethylsulfoxide content of 1050mg/L.
The sewage treatment method comprises the following steps:
1) The sewage is firstly precipitated or filtered to remove solid impurities, then is introduced into an ultraviolet catalytic reactor I, persulfate is added through an oxidant dosing device, and some easily degradable organic matters in the water are decomposed into carbon dioxide and water through ultraviolet catalytic oxidation for 10 hours, wherein COD=152 mg/L, 338mg/L and 640mg/L of dimethyl sulfoxide are contained in the water after the treatment.
2) Regulating the pH value of the sewage subjected to ultraviolet catalytic oxidation to 7.5, adsorbing by a macroporous resin porous adsorption material, removing residual high molecular organic matters, introducing into a porous carbon filler electrolytic reactor, electrifying for 10 hours, and damaging dimethyl sulfoxide molecules in the sewage at 11V, wherein the COD=175 mg/L of the water treated by the step has the dimethyl sulfoxide content of 10mg/L and the dimethyl sulfone content of 10mg/L.
3) Introducing the electrolyzed sewage into an ultraviolet catalytic reactor II, adding ozone through an oxidant dosing device, and oxidizing micromolecular organic matters in the sewage into carbon dioxide and water through ultraviolet catalytic oxidation for 10 hours, wherein COD=30 mg/L, 6mg/L and 8mg/L of dimethyl sulfoxide are contained in the treated water.
Example 3
The sewage treated in this example was a dimethylsulfoxide-containing sewage produced during the production of carbon fibers, which was obtained from Jiangsu certain company, and had cod=550 mg/L and a dimethylsulfoxide content of 1050mg/L.
The sewage treatment method comprises the following steps:
1) The sewage is firstly precipitated or filtered to remove solid impurities, then is introduced into an ultraviolet catalytic reactor I, hypochlorite is added through an oxidant dosing device, and some easily degradable organic matters in the water are decomposed into carbon dioxide and water through ultraviolet catalytic oxidation for 100 hours, wherein COD=160 mg/L, 320mg/L and 620mg/L dimethyl sulfoxide are contained in the water after the treatment.
2) The PH value of the sewage after ultraviolet catalytic oxidation is regulated to 8, residual high molecular organic matters are removed through adsorption by a porous silica gel adsorption material, then the sewage is introduced into a porous carbon filler electrolytic reactor, the electric current is applied for 100 hours, the voltage is 11V, dimethyl sulfoxide molecules in the sewage are destroyed, and the COD=165 mg/L, the dimethyl sulfoxide content is 8mg/L and the dimethyl sulfone content is 5mg/L.
3) Introducing the electrolyzed sewage into an ultraviolet catalytic reactor II, adding ozone through an oxidant dosing device, and oxidizing micromolecular organic matters in the sewage into carbon dioxide and water through ultraviolet catalytic oxidation for 100 hours, wherein COD=35 mg/L, 5mg/L and 10mg/L of dimethyl sulfoxide are contained in the treated water.
Example 4
The sewage treated in this example was produced in coal chemical production, and was taken from a company in inner Mongolia, and COD=2500 mg/L.
The sewage treatment method comprises the following steps:
1) The sewage is firstly precipitated or filtered to remove solid impurities, then is introduced into an ultraviolet catalytic reactor I, and simultaneously oxygen is introduced into the ultraviolet catalytic reactor I through an oxygen conveying device to generate ozone oxidant under the irradiation of an ultraviolet lamp. Some easily degradable organic matters in the water are decomposed into carbon dioxide and water by ultraviolet catalytic oxidation for 0.5 hour, and the COD=755 mg/L of the water after the treatment.
2) And regulating the pH value of the sewage subjected to ultraviolet catalytic oxidation to 8, adsorbing by a molecular sieve porous adsorption material, removing residual high molecular organic matters, then introducing the sewage into a porous carbon filler electrolysis reactor, electrifying for 0.5 hour, and carrying out voltage 11V, wherein the COD=550 mg/L of the water after the treatment.
3) And then introducing the electrolyzed sewage into an ultraviolet catalytic reactor II, adding ozone through an oxidant dosing device, and oxidizing micromolecular organic matters in the sewage into carbon dioxide and water through ultraviolet catalytic oxidation for 1 hour, wherein the COD (chemical oxygen demand) of the treated water is=5 mg/L.
Claims (5)
1. A method for combined advanced oxidation treatment of wastewater, comprising the steps of:
Step one: introducing sewage into an ultraviolet catalytic reactor, adding an oxidant, and decomposing organic matters in the sewage through ultraviolet catalytic oxidation for 0.1-100 hours; the sewage is the sewage containing dimethyl sulfoxide;
Step two: the pH value of the sewage treated in the first step is more than or equal to 7 before the sewage is introduced into a porous carbon filler electrolytic reactor, residual high polymer organic matters are removed through adsorption of a porous adsorption material, and then the sewage is introduced into the porous carbon filler electrolytic reactor and is electrified for 0.1 to 100 hours, so that decomposed organic matter molecules which cannot be subjected to ultraviolet catalytic oxidation in the first step are destroyed; pulse current is introduced between positive and negative electrodes in the porous carbon filler electrolytic reactor;
Step three: introducing the electrolyzed sewage in the second step into an ultraviolet catalytic reactor, adding an oxidant, and oxidizing small molecular organic matters in the sewage into carbon dioxide and water through ultraviolet catalytic oxidation for 0.1-100 hours;
the ultraviolet lamp in the ultraviolet catalytic reactor in the first step and the third step is a sleeve, the inner layer is an ultraviolet lamp tube, the outer layer is a sleeve, oxygen is introduced between the ultraviolet lamp tube and the sleeve, ozone is generated by ultraviolet irradiation, and the ultraviolet lamp tube adopts an electrodeless ultraviolet lamp tube excited by electromagnetic waves.
2. The method for combined advanced oxidation treatment of sewage according to claim 1, wherein the oxidizing agent in the first or third step is one or more of the following oxidizing agents: hydrogen peroxide, ozone, persulfates, hypochlorites, chlorates, perchlorates, and percarbonates; the oxidant enters the ultraviolet catalytic reactor through the oxidant dosing device.
3. A combined advanced oxidation treatment process according to claim 1 wherein the effluent from step one is precipitated or filtered to remove solid impurities prior to being passed to the ultraviolet catalytic reactor for treatment.
4. The method for combined advanced oxidation treatment wastewater according to claim 1, wherein the porous adsorption material is one or more of the following adsorption materials: activated carbon, carbon fiber, macroporous resin, molecular sieve and porous silica gel.
5. The method for combined advanced oxidation treatment of sewage according to claim 1, wherein the porous carbon filler surface in the second step is loaded with one or more of the following substances: manganese dioxide, nickel oxide, iron oxide, platinum, palladium silver, copper oxide, cobalt oxide, titanium titanium dioxide, ruthenium oxide, lanthanum oxide, cerium oxide, neodymium oxide, praseodymium oxide, samarium oxide, europium oxide, gadolinium oxide.
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| CN112158909A (en) * | 2020-08-28 | 2021-01-01 | 浙江工业大学 | Method for treating tetracycline in water by using UV activated double-oxidant system |
| CN115417528A (en) * | 2022-09-16 | 2022-12-02 | 安徽亿臻环境工程有限公司 | Combined advanced oxidation sewage treatment method |
| CN118026360A (en) * | 2024-03-14 | 2024-05-14 | 郑州大学 | A method for degrading dye wastewater using photoelectric synergistic three-dimensional electrodes |
| CN119059677A (en) * | 2024-09-06 | 2024-12-03 | 广东工业大学 | A system for removing organic pollutants from sodium-based waste salt |
| CN119638006A (en) * | 2024-12-19 | 2025-03-18 | 清能环境(北京)有限公司 | Tubular type multielement advanced oxidation sewage treatment device and method based on ultraviolet ozone |
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