CN106219839A - The method for treating water of molecular structure in water removed by a kind of ultraviolet light - Google Patents
The method for treating water of molecular structure in water removed by a kind of ultraviolet light Download PDFInfo
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- CN106219839A CN106219839A CN201610598019.XA CN201610598019A CN106219839A CN 106219839 A CN106219839 A CN 106219839A CN 201610598019 A CN201610598019 A CN 201610598019A CN 106219839 A CN106219839 A CN 106219839A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000003756 stirring Methods 0.000 claims abstract description 4
- DNPRVXJGNANVCZ-UHFFFAOYSA-N bromo(nitro)methane Chemical compound [O-][N+](=O)CBr DNPRVXJGNANVCZ-UHFFFAOYSA-N 0.000 claims description 19
- GQEVYCCMYUNRHJ-UHFFFAOYSA-N dibromo(nitro)methane Chemical compound [O-][N+](=O)C(Br)Br GQEVYCCMYUNRHJ-UHFFFAOYSA-N 0.000 claims description 16
- XUNYLLBGLKGFHO-UHFFFAOYSA-N dichloro(nitro)methane Chemical compound [O-][N+](=O)C(Cl)Cl XUNYLLBGLKGFHO-UHFFFAOYSA-N 0.000 claims description 15
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 9
- 229910052753 mercury Inorganic materials 0.000 claims description 9
- HLKAUZMWJJIVBN-UHFFFAOYSA-N [N+](=O)([O-])C.[Cl] Chemical compound [N+](=O)([O-])C.[Cl] HLKAUZMWJJIVBN-UHFFFAOYSA-N 0.000 claims description 6
- 239000010453 quartz Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000007654 immersion Methods 0.000 claims description 5
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 claims description 4
- 229910000497 Amalgam Inorganic materials 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 229910052736 halogen Inorganic materials 0.000 claims description 3
- 150000002367 halogens Chemical class 0.000 claims description 3
- 230000001678 irradiating effect Effects 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 229910052724 xenon Inorganic materials 0.000 claims description 3
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 3
- 150000001335 aliphatic alkanes Chemical class 0.000 claims 1
- 239000003651 drinking water Substances 0.000 abstract description 12
- 235000020188 drinking water Nutrition 0.000 abstract description 12
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 11
- 239000006227 byproduct Substances 0.000 abstract description 8
- 239000010865 sewage Substances 0.000 abstract description 7
- 239000002244 precipitate Substances 0.000 abstract description 5
- 230000001590 oxidative effect Effects 0.000 abstract description 4
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 abstract description 3
- 239000007800 oxidant agent Substances 0.000 abstract description 3
- 231100000419 toxicity Toxicity 0.000 abstract description 3
- 230000001988 toxicity Effects 0.000 abstract description 3
- 239000003054 catalyst Substances 0.000 abstract description 2
- 231100001261 hazardous Toxicity 0.000 abstract description 2
- 231100000614 poison Toxicity 0.000 abstract description 2
- 230000007096 poisonous effect Effects 0.000 abstract description 2
- 238000001228 spectrum Methods 0.000 abstract description 2
- 125000005843 halogen group Chemical group 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- LFHISGNCFUNFFM-UHFFFAOYSA-N chloropicrin Chemical compound [O-][N+](=O)C(Cl)(Cl)Cl LFHISGNCFUNFFM-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- -1 hydroxyl radical free radical Chemical class 0.000 description 4
- LYGJENNIWJXYER-UHFFFAOYSA-N nitromethane Chemical compound C[N+]([O-])=O LYGJENNIWJXYER-UHFFFAOYSA-N 0.000 description 4
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 3
- 239000003708 ampul Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- CGKPGVZMSKVVOF-UHFFFAOYSA-N chloro(nitro)methane Chemical compound [O-][N+](=O)CCl CGKPGVZMSKVVOF-UHFFFAOYSA-N 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 238000006303 photolysis reaction Methods 0.000 description 3
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000005260 alpha ray Effects 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- QQZIUHOKWDFXEY-UHFFFAOYSA-N tribromo(nitro)methane Chemical compound [O-][N+](=O)C(Br)(Br)Br QQZIUHOKWDFXEY-UHFFFAOYSA-N 0.000 description 2
- 238000003911 water pollution Methods 0.000 description 2
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical group [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- NCNYHRWQRMLEDN-UHFFFAOYSA-N [Cl].BrC[N+](=O)[O-] Chemical compound [Cl].BrC[N+](=O)[O-] NCNYHRWQRMLEDN-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229940006460 bromide ion Drugs 0.000 description 1
- JMZWGJLCNQYBHT-UHFFFAOYSA-N bromo-dichloro-nitromethane Chemical compound [O-][N+](=O)C(Cl)(Cl)Br JMZWGJLCNQYBHT-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 125000001309 chloro group Chemical class Cl* 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 231100000135 cytotoxicity Toxicity 0.000 description 1
- 230000003013 cytotoxicity Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000005595 deprotonation Effects 0.000 description 1
- 238000010537 deprotonation reaction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 125000000950 dibromo group Chemical group Br* 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 231100000025 genetic toxicology Toxicity 0.000 description 1
- 230000001738 genotoxic effect Effects 0.000 description 1
- 238000006897 homolysis reaction Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000015843 photosynthesis, light reaction Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 210000002700 urine Anatomy 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
- C02F1/30—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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
-
- 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
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F2101/38—Organic compounds containing nitrogen
-
- 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
- C02F2103/42—Nature of the water, waste water, sewage or sludge to be treated from bathing facilities, e.g. swimming pools
-
- 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
-
- 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
- C02F2201/322—Lamp arrangement
- C02F2201/3222—Units using UV-light emitting diodes [LED]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The present invention discloses a kind of ultraviolet light and removes the method for treating water of molecular structure in water, and it relates to a kind of method removing the highest nitrogenous disinfection byproducts molecular structure of toxicity.Method: to the middle irradiation UV light containing molecular structure, and stir,.The present invention need not multistage removal, the oxidant and the catalyst that need not costliness, do not produces secondary pollution, available cheap ultraviolet wave spectrum light source, can quickly remove molecular structure, can reactor design easily, meet the needs of various different water body, convenient management, it is possible to ensure water quality safety.The method can apply to the advanced treating of the drinking water containing molecular structure after the conventional water factory treatment technology that flocculates, precipitates, filters, adsorbs, sterilizes, sewage, swimming-pool water, recycled water etc., thus reduce the concentration of poisonous and hazardous molecular structure, it is particularly advantageous in ensureing drinking water and the water quality safety of swimming-pool water.
Description
Technical field
The present invention relates to water pollution processing technology field, remove halo nitre more particularly, to a kind of ultraviolet radiation
The method for treating water of methylmethane.
Background technology
The formation of molecular structure (HNM) is main and natural organic matter (NOM), organic matter of sewage (EfOM), algae, ammonia
Base is sour, fatty amine is relevant with the cholorination of perspiration or chloramination sterilization with the urine of the mankind in swimming pool.Cholorination is
Domestic common effective disinfection technology, but, along with cholorination is a series of chloro disinfection byproduct (DBP), including halo nitre
Methylmethane.And owing to inevitably there is bromide ion in natural water and sanitary sewage, therefore chloro nitromethane is also
Bromonitromethane can be changed into.Therefore during molecular structure is common in drinking water, sewage and swimming-pool water.The most true
Accept 9 kinds of HNMs, including a halo, dihalo and three molecular structures.These molecular structures are trichlorine nitre respectively
Methylmethane (TCNM), Nitrobromoform (TBNM), monobromo dichloro-nitromethane (BDCNM), dibromo one chloro nitromethane
(CDBNM), dichloro nitromethane (DCNM), dibromonitromethane (DBNM), a chlorine bromonitromethane (BCNM), a chlorine nitro
Methane (CNM) and bromonitromethane (BNM).Wherein, TCNM is modal molecular structure in drinking water, next to that
CNM, DCNM, BDCNM and BCNM.And the cytotoxicity and genotoxicity of bromonitromethane is more higher than chloro nitromethane, because of
The toxicity of this two bromonitromethane is the strongest.
These poisonous and hazardous molecular structures above-mentioned, for human health, are very important threats.But,
Remove the precursor of molecular structure improper, because some precursors have hydrophilic nmature, it is difficult to by traditional condensation,
The treatment technology flocculate, precipitate, filter, adsorbed is removed.Therefore, the threat polluted by disinfection byproduct (DBP) at drinking water source
Under, study the novel technique that effectively can remove disinfection byproduct (DBP) in water in subsequent treatment thus be effectively improved water quality peace
Quan Xing, sustainable use and social development to water resource just have extremely important strategic importance.
Existing high-level oxidation technology can produce hydroxyl radical free radical or aqueous electron.Although hydroxyl radical free radical and hydration
Electronics can be degraded molecular structure, but is difficult to effectively remove in actual water body, because based on hydroxyl radical free radical
The hydroxyl radical free radical Css that can produce of high-level oxidation technology be about 10-14-10-12Mol/L, organic in true water body
Thing and ion can a large amount of cancellation free radicals so that the degradation efficiency of molecular structure is greatly reduced.Meanwhile, aqueous electron
The most often by the dissolved oxygen cancellation in water.And other processing modes, the most ultrasonic, sunlight photodissociation etc. processes molecular structure
Efficiency is the highest, needs to consume substantial amounts of time or the energy.Therefore, it is also desirable to study the follow-up of environmental protection more efficient, more economical
Treatment technology removes molecular structure.
Summary of the invention
The present invention in order to produce defect and the deficiency of molecular structure after overcoming above-mentioned existing water pollution treatment technology,
There is provided a kind of effective, economic, feasible ultraviolet light to remove the method for treating water of molecular structure in water, i.e. utilize ultraviolet disinfection
Technology, to acid-base value be neutral or alkaline water body effectively sterilize while, moreover it is possible to remove that the halo in water is nitrogenous to disappear
Toxic byproduct molecular structure, thus ensure drinking water drink health.
Above-mentioned purpose of the present invention is achieved through the following technical solutions:
The method for treating water of molecular structure in water removed by a kind of ultraviolet light, irradiates purple to the water body containing molecular structure
Outer light also stirs, and completes the removal of molecular structure in water.
Described is through condensing, flocculate, precipitate, filter, adsorb, sterilize the process of conventional water factory containing molecular structure water body
The drinking water containing molecular structure after technology, sewage, swimming-pool water, recycled water etc..When irradiating, the ultraviolet light irradiated
Intensity must keep stable, and must keep the dosage of ultraviolet light.Ultraviolet light exposure dose is by water quality, ultraviolet transmission rate, ultraviolet
The factors such as lamp aging coefficient determine.
Said method relates to a kind of method removing the highest nitrogenous disinfection byproducts molecular structure of toxicity.It
The methods such as the precursor control method of existing molecular structure, method for pre-oxidizing, active carbon adsorption that solve are controlling water
The various limitation of middle molecular structure.Method: to the middle irradiation UV light containing molecular structure, and stir,.This
Bright need not multistage removal, need not oxidant and the catalyst of costliness, do not produce secondary pollution, available cheap ultraviolet waves
Spectrum light source, can quickly remove molecular structure, it is convenient to reactor design, meet the needs of various different water body, pipe
Reason is convenient, it is possible to ensure water quality safety.
Preferably, described ultraviolet light is to be irradiated out by UV irradiation systems, and described UV irradiation systems includes ultraviolet
Fluorescent tube and the UV intensity sensor being arranged on ultraviolet lamp tube.
Preferably, the light source of described ultraviolet lamp tube is light emitting diode (LED), low pressure mercury lamp, medium pressure mercury lamp, high-pressure mercury
In lamp, amalgam uviol lamp, Halogen light, xenon lamp, blackout, vacuum UV lamp, X-ray, alpha ray, gamma-rays or sunlight any
One or combination.In order to keep uv dosage, need the requirement regularly cleaning or replacing ultraviolet source to keep uv dosage.
Preferably, described ultraviolet light irradiates the mode of the water body containing molecular structure is overflow-type, immersion or table
Face irradiation formula.
Preferably, when the mode that ultraviolet light irradiates water body is overflow-type or immersion, described irradiation system also wraps
Include for entangling ultraviolet lamp tube and the quartz socket tube of UV intensity sensor.Ultraviolet light exposure dose also with remove quartz socket tube
The relevant cleaning way of fouling is relevant.
Preferably, when the fluorescent tube in described ultraviolet lamp tube is single fluorescent tube, this fluorescent tube is positioned at ultraviolet lamp tube cylinder section
Central authorities；When fluorescent tube in described ultraviolet lamp tube is multiple fluorescent tube, its arrangement principle is to make each point tool in ultraviolet lamp tube cylinder section
There is identical ultraviolet radiation intensity.
The selection of fluorescent tube quantity can be according to actual fluorescent tube intensity, required uv dosage, the process water yield and operation cost
Determine.Multiple ultraviolet lamp tubes may be arranged that distribution parallel with current, it is also possible to is arranged to and current vertical distribution, makes as far as possible
It is evenly distributed, and makes ultraviolet be fully contacted with current.
Preferably, the described water body pH scope containing molecular structure is 6-9.
Preferably, described molecular structure (HNMs) be bromonitromethane (BNM), a chlorine nitromethane (CNM), two
One or more in chlorine nitromethane (DCNM) or dibromonitromethane (DBNM).
Preferably, described to the water body irradiating ultraviolet light containing molecular structure, its reaction temperature is 20 ± 2 DEG C, this
Time remove molecular structure effect best.
In theory, pH is the highest, and the effect removing molecular structure is the best；Light intensity is the biggest, removes molecular structure
Effect is the best.But in view of by the generally neutrality of the drinking water after advanced treating, therefore pH scope is that 7-8 is proper.Further,
The present invention is through numerous studies and in view of the problem of cost, it is preferable that think the Single wavelength uviol lamp using wavelength to be 254nm
During fluorescent tube, ultraviolet light intensity used is 40-200 mJ cm-2Proper.If it is necessary, it can be regulated optimal according to its characteristic
PH scope, reach molecular structure and the most quickly remove.Can design different anti-according to water quality requirement and design specification
Answer device configuration, reach quickly to remove the purpose of molecular structure in water.
Therefore, the application in process is repaired containing molecular structure water body of the above-mentioned method for treating water is also the guarantor of the present invention
Within the scope of protecting.
It is at neutral or alkali that the present invention utilizes ultraviolet light to remove the principle of the method for treating water of molecular structure in water
Under the conditions of property, a halo and dihalo nitromethane lose proton thus ionize, i.e. deprotonation, the halo of ionic forms
Molar absorption coefficient 1-2 the order of magnitude bigger than the molecular structure of molecular conformation of nitromethane, therefore can be more effectively
Absorb ultraviolet wavelength, improve photolysis efficiency.From the angle analysis of quantum chemistry, molecular structure is mainly in acid condition
Unionized state, homolysis is the cardinal principle of its photodissociation；Under conditions of neutrality and alkalescence, molecular structure mainly ionization
State, and the conjugated system in the molecular structure of ionic forms decreases π mole of track and π*Between mole track
Energy difference away from, thus strengthen the absorption to ultraviolet light, promote the heterolytic fission of bond energy.
Compared with prior art, the method have the advantages that
The method for treating water of the present invention has only to that water body carries out UV Light to be added oxidant without extra or urge
Agent just can efficiently remove the molecular structure in water, can apply to through condensing, flocculate, precipitate, filter, adsorbing,
The depth of the drinking water containing molecular structure after sterilization conventional water factory treatment technology, sewage, swimming-pool water, recycled water etc.
Reason, especially solves existing drinking water and swimming-pool water exists disinfection byproduct (DBP) thus affects the problem of health, tool
Have efficiently remove molecular structure, running is convenient, do not generate the advantages such as extra disinfection byproduct (DBP).
The molecular structure thing that this method is removed include bromonitromethane (BNM), a chlorine nitromethane (CNM),
Dichloro nitromethane (DCNM), dibromonitromethane (DBNM), trichloronitromethane (TCNM) and Nitrobromoform (TBNM).
Meanwhile, the method for treating water cost of the present invention is relatively low, operation is the simplest, it is easy to popularization and application, can apply to following water
Body carries out degree of depth post processing: after condensing, flocculate, precipitate, filter, adsorb, sterilize conventional water factory treatment technology containing halo
The sewage of nitromethane, drinking water, swimming-pool water, recycled water etc., especially drinking water and the advanced treating of swimming-pool water；And
Use safety, may be used for ensureing water quality safety.
Accompanying drawing explanation
Fig. 1 be the present invention method in water 4 kinds of typical molecular structure bromonitromethane (BNM), two
Chlorine nitromethane (DCNM), dibromonitromethane (DBNM), trichloronitromethane (TCNM) the apparent first-rate when pH 3-9
The variation diagram of constant, wherein kappRepresent apparent first order rate constant.
Detailed description of the invention
Further illustrate the present invention below in conjunction with Figure of description and specific embodiment, but embodiment is not to the present invention
Limit in any form.Unless stated otherwise, the present invention uses reagent, method and apparatus are the examination of the art routine
Agent, method and apparatus.
Unless stated otherwise, following example agents useful for same and material are commercial.
Detailed description of the invention one
Present embodiment is removed the method for treating water of molecular structure in water based on ultraviolet light and is carried out by the following method: to containing
Carrying out photoirradiation in the water of molecular structure, and be stirred, light intensity determines according to the actual requirements.The irradiation of ultraviolet light uses
Overflow-type, ultraviolet source outer wall needs nested quartz ampoule to be protected by.
In present embodiment, photoirradiation can use low pressure mercury lamp, medium pressure mercury lamp, high voltage mercury lamp, amalgam uviol lamp, halogen
Lamp can meet use condition, it is also possible to utilizes in xenon lamp, blackout, vacuum UV lamp, X-ray, alpha ray or gamma-rays
Kind.
Detailed description of the invention two
Present embodiment is unlike detailed description of the invention one: photoirradiation uses immersion, and ultraviolet source outer wall needs nesting
Quartz ampoule is protected by.
Detailed description of the invention three
Present embodiment is unlike detailed description of the invention one: photoirradiation uses surface irradiation formula, and ultraviolet source need not embedding
Set quartz ampoule is protected by.To containing bromonitromethane (BNM), dichloro nitromethane (DCNM), dibromonitromethane
(DBNM), the pure water of trichloronitromethane (TCNM) process, pH condition is respectively 3,4,5,6,7,8,9.Meanwhile, one is arranged
Group matched group: under condition of different pH, reaction solution being carried out dark treatment, the response time is 3 hours；
As shown in Figure 1, the method for the present invention is in water 4 typical molecular structure bromonitromethane for result
(BNM), dichloro nitromethane (DCNM), dibromonitromethane (DBNM), trichloronitromethane (TCNM).When pH3-5,4 kinds
The clearance of molecular structure is the most on the low side；When pH6-9, a molecular structure (BNM) and dihalo nitromethane
The clearance of (DBNM, DCNM) increases along with the increase of pH, and pH9 when, first order reaction speed constant reaches maximum,
Illustrating that pH is the highest, the removal effect of BNM, DBNM, DCNM is the most obvious.
Embodiments described above, embodiment and protection scope of the present invention to the inventive method do not do any
Restriction, any amendment, combination, equivalent and improvement etc. done within the spiritual principles of the present invention, all should comprise
Within the claims of the present invention.
Claims (9)
1. the method for treating water of molecular structure in water removed by a ultraviolet light, it is characterised in that to containing halonitro first
The water body irradiating ultraviolet light of alkane also stirs, and completes the removal of molecular structure in water.
Method the most according to claim 1, it is characterised in that described ultraviolet light is to be irradiated by UV irradiation systems
Coming, described UV irradiation systems includes ultraviolet lamp tube and the UV intensity sensor being arranged on ultraviolet lamp tube.
Method the most according to claim 2, it is characterised in that the light source of described ultraviolet lamp tube be light emitting diode (LED),
Low pressure mercury lamp, medium pressure mercury lamp, high voltage mercury lamp, amalgam uviol lamp, Halogen light, xenon lamp, blackout, vacuum UV lamp, X-ray, α penetrate
In line, gamma-rays or any one or combination of sunlight.
The most according to the method in claim 2 or 3, it is characterised in that described ultraviolet light irradiates containing molecular structure
The mode of water body is overflow-type, immersion or surface irradiation formula.
Method the most according to claim 3, it is characterised in that when ultraviolet light irradiate irradiate water body mode be overflow-type or
During immersion, described irradiation system also includes for entangling ultraviolet lamp tube and the quartz socket tube of UV intensity sensor.
The most according to the method in claim 2 or 3, it is characterised in that when the fluorescent tube in described ultraviolet lamp tube is single fluorescent tube,
This fluorescent tube is positioned at the central authorities of ultraviolet lamp tube cylinder section；When fluorescent tube in described ultraviolet lamp tube is multiple fluorescent tube, its arrangement principle
It is that in making ultraviolet lamp tube cylinder section, each point has identical ultraviolet radiation intensity.
Method the most according to claim 1, it is characterised in that the described water body pH scope containing molecular structure is 6-9.
Method the most according to claim 1, it is characterised in that described molecular structure (HNMs) is bromonitromethane
(BNM), one or more in a chlorine nitromethane (CNM), dichloro nitromethane (DCNM) or dibromonitromethane (DBNM).
Method the most according to claim 1, it is characterised in that described to the water body irradiation ultraviolet containing molecular structure
Light, its reaction temperature is 20 ± 2 DEG C.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021056723A1 (en) * | 2019-09-25 | 2021-04-01 | 上海紫奕光电科技有限公司 | Ultraviolet fluid treatment device |
| CN112897635A (en) * | 2021-01-27 | 2021-06-04 | 同济大学 | Method for removing organic chloramine in drinking water |
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| CN102241451A (en) * | 2011-04-08 | 2011-11-16 | 哈尔滨工业大学 | Degradation method for halogenated disinfection by-products |
| CN102381740A (en) * | 2011-11-02 | 2012-03-21 | 哈尔滨工业大学 | Method for removing nitrogenous disinfection byproducts in water on basis of persulfate/light combination |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102241451A (en) * | 2011-04-08 | 2011-11-16 | 哈尔滨工业大学 | Degradation method for halogenated disinfection by-products |
| CN102381740A (en) * | 2011-11-02 | 2012-03-21 | 哈尔滨工业大学 | Method for removing nitrogenous disinfection byproducts in water on basis of persulfate/light combination |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021056723A1 (en) * | 2019-09-25 | 2021-04-01 | 上海紫奕光电科技有限公司 | Ultraviolet fluid treatment device |
| CN112897635A (en) * | 2021-01-27 | 2021-06-04 | 同济大学 | Method for removing organic chloramine in drinking water |
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