CN104326523A - Method for degrading drinking water chlorination disinfection by-products - Google Patents
Method for degrading drinking water chlorination disinfection by-products Download PDFInfo
- Publication number
- CN104326523A CN104326523A CN201410565157.9A CN201410565157A CN104326523A CN 104326523 A CN104326523 A CN 104326523A CN 201410565157 A CN201410565157 A CN 201410565157A CN 104326523 A CN104326523 A CN 104326523A
- Authority
- CN
- China
- Prior art keywords
- products
- disinfection
- radiation
- tap water
- chlorination
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- 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
- C02F2101/36—Organic compounds containing halogen
Landscapes
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- 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)
Abstract
The invention relates to a method for degrading drinking water chlorination disinfection by-products and belongs to the field of the drinking water treatment methods. The method for degrading the drinking water chlorination disinfection by-products comprises the following steps: guiding tap water through a radiation treater at a certain flow rate before going into a water supply network in 2 hours after chlorination disinfection, irradiating the flowing tap water by use of a source of radiation by a certain dosage, and supplying the irradiated tap water, namely the drinking water in which the chlorination disinfection by-products are degraded, to the pipe network. According to the method for degrading the drinking water chlorination disinfection by-products, a 60Co or 137Cs source or a high-energy electron accelerator is taken as the source of radiation to radiate the chlorination-disinfected tap water and degrade chlorination disinfection by-products, the degradation rate is above 90% at an appropriate dosage, and meanwhile, further generation of the chlorination disinfection by-products also can be inhibited; as a result, the method plays an important role in guaranteeing satisfied water quality. Besides, the method is simple in process, convenient to operate, and good in degradation and inhibition effects on the drinking water chlorination disinfection by-products.
Description
Technical field
The present invention relates to a kind of method of substance of disinfection by products of degrading, belong to drinking water treatment method field.
Background technology
Chlorination is the sterilization means extensively adopted in city water process always, but 20 century 70s detect trichloromethane in feedwater, have caused Chlorination Disinfection By-products and the research to Health Impact thereof.By showing the sickness rate of some cancer and the investigation of etiology relation and a large amount of experimentation on animalies, the tap water of long-term drinking chlorination, the danger dying from digestion and urinary system cancer is larger, and there is statistical relation with the mortality ratio of other cancer, halogenated disinfection by-products is the virulence factor of most cancer.In prior art can in quantitative halogenated organic matters, haloform (THMs) and halogen acetic acid (HAAs) account for 60% ~ 75% of halogenated organic matters (TOX), in halogenated disinfection by-products, THMs and HAAs also account for more than 75%, therefore, the research of THMs and HAAs is had great significance.
The gamma-rays radiated during radioactive atom decay has great penetrating force, and industrial modal irradiation source is
60co and
137cs, for the process of water and mud.And the controllability of high-power electron beam is good, speed of reaction is fast, and penetration power is strong, achieves industrial applications at home and abroad.Utilize irradiation technique to carry out the long period abroad to the research that waste water processes, research shows that gamma-rays and electron beam are to the waste water containing heavy metal, and phenolic wastewater, cyanide wastewater, industry all have good treatment effect containing fearing quinone waste water from dyestuff.
Therefore, study a kind of technique simple, easy to operate, to the method for the degraded substance of disinfection by products of substance of disinfection by products good degrading effect, there is certain economy, society and environmental benefit.
Summary of the invention
It is simple, easy to operate that the present invention aims to provide a kind of technique, to the method for the degraded substance of disinfection by products of substance of disinfection by products good degrading effect.
The method of degraded substance of disinfection by products of the present invention, comprises the following steps:
By after chlorination 2 hours inherent enter water supply network before tap water with certain flow velocity by radiation processor, carry out irradiation with certain dosage to the tap water flow through by source of radiation, the tap water that the tap water after irradiation is Chlorination Disinfection By-products of degrading enters pipe network feedwater.
Preferably, source of radiation of the present invention is
60co or
137cs, source strength is 500000Ci, and radiation dose is 5kGy.
Preferred, source of radiation of the present invention is high-energy electron accelerator, and intensity is 9MeV, and radiation dose is 3kGy.
Preferred further, tap water flow velocity of the present invention is tap water residence time in radiation processor is 1h.
Method of the present invention, adopts
60co or
137the gamma-rays that Cs source produces and high-power electron beam degraded Chlorination Disinfection By-products THMs and HAAs, its principle is, high-power electron beam and gamma-rays can make solute in water and water decompose, produce hydrated electron, positive ion, excited state particle, OH and H free radical isoreactivity intermediate, these materials can react with the pollution substance in water and make it decompose.When having dissolved oxygen, the hydrogen atom that reductibility is very strong and hydrated electron e-with oxygen reaction, generate the O of strong oxidizing property again
2-, these active substances and pollutant reaction make it to degrade, and finally generate C0
2and H
2o, this acting in radiation treatment waste water is occupied an leading position.And 0
2-and H0
2activity and concentration be far smaller than OH again, so the degradation process of pollutent mainly with the reaction process of OH.
In method of the present invention, when irradiation dose 5kGy, DCA, TCA, CHCl
3degradation efficiency, all more than 85%, all achieves good degradation effect.After irradiation, TOC concentration obviously declines, when irradiation dose is 0, and TOC=5.366mg/L, during irradiation dose 1kGy, TOC=4.298mg/L, during irradiation dose 5kGy, TOC=3.397mg/L, illustrates that irradiation can cause mineralization of organic material in solution, thus part removes the precursor of disinfection byproduct (DBP).Pre-irradiation disinfection byproduct (DBP) passes obvious increase in time, and after irradiation, increasing amount is not obvious.During irradiation dose 1kGy, 11.6 to 120h after irradiation, CHCl
3concentration adds 27.4%, during irradiation dose 5kGy, and CHCl
3concentration merely add 20.8%, and without CHCl during irradiation
3increasing amount reach 153.5%.This illustrates the precursor of irradiation not only mineralising disinfection byproduct (DBP), and inhibits the further generation of disinfection byproduct (DBP).Its reason may be generate H in irradiation process
2o
2, it suppresses the further generation of disinfection byproduct (DBP), and this discovery has great significance, because after the sterilization process process of routine, disinfection byproduct (DBP) constantly increases in drinking water treatment and pipe network distribution process, and during arrival pipe network tip, concentration reaches maximum value.But as adopted irradiation technique, this increase obviously reduces, very favourable with guarantee HUMAN HEALTH for maintenance drinking water quality.
In method of the present invention, high-energy electron beam irradiation and gamma-ray irradiation are all ionization irradiation technique, to degrade halogen containing organic compound with high-energy electron beam irradiation, experimental result shows: when irradiation dose is only 3kGy, the three kinds of methyl halides detected all achieve obvious degradation effect, degradation efficiency is all more than 90%, and CHBrCl
2all degrade.After irradiation, these three kinds of disinfection byproduct (DBP) passing increasing amount is in time all not obvious, for CHBrCl
2and CCl
4, when the hold-time reaches 96h, under two irradiation doses, even all occurred negative growth, with the Experimental comparison of two gamma-ray irradiations, high-power electron beam and the degradation effect of gamma-rays to disinfection by-product of drinking water there is no remarkable difference.Research both domestic and external shows, high-power electron beam and gamma-rays can produce similar active intermediate, and topmost difference is that cobalt source gamma-ray dosage release rate is relatively low.
The method of degraded substance of disinfection by products of the present invention, adopts
60co or
137cs source or high-energy electron accelerator carry out radiation as source of radiation to the tap water after chlorination, degraded Chlorination Disinfection By-products, more than 90% is reached in the dose degradation solution rate be applicable to, the further generation of Chlorination Disinfection By-products can also be suppressed, for ensureing that water quality reaching standard has very important meaning simultaneously.Described method technique is simple, easy to operate, to substance of disinfection by products degraded and inhibition good.
Embodiment
Embodiment one:
By after chlorination 2 hours inherent enter water supply network before tap water with certain flow velocity (flow velocity be tap water in radiation processor the residence time for 1h) by laying
60co or
137in the radiation processor of Cs or high-energy electron accelerator source of radiation, by source of radiation, with certain dosage, (source of radiation is
60co or
137when Cs, source strength are 500000Ci, radiation dose is 5kGy; When source of radiation is high-energy electron accelerator, intensity is 9MeV, radiation dose is 3kGy) irradiation is carried out to the tap water flow through, the tap water that the tap water after irradiation is Chlorination Disinfection By-products of degrading enters pipe network feedwater.
Embodiment two: treatment effect
By the method for degraded substance of disinfection by products of the present invention, carry out radiotreatment to certain tap water, result is as shown in table-1 and table-2.
Table-1
60co gamma-rays treatment effect
Table-2 high-energy electron accelerator treatment effects
。
Claims (4)
1. the method for substance of disinfection by products of degrading, comprises the following steps:
By after chlorination 2 hours inherent enter water supply network before tap water with certain flow velocity by radiation processor, carry out irradiation with certain dosage to the tap water flow through by source of radiation, the tap water that the tap water after irradiation is Chlorination Disinfection By-products of degrading enters pipe network feedwater.
2. the method for degraded substance of disinfection by products as claimed in claim 1, is characterized in that described source of radiation is
60co or
137cs, source strength is 500000Ci, and radiation dose is 5kGy.
3. the method for degraded substance of disinfection by products as claimed in claim 1, it is characterized in that described source of radiation is high-energy electron accelerator, intensity is 9MeV, and radiation dose is 3kGy.
4. the method for the degraded substance of disinfection by products as described in claim 1 or 2 or 3, is characterized in that described tap water flow velocity be tap water residence time in radiation processor is 1h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410565157.9A CN104326523A (en) | 2014-10-22 | 2014-10-22 | Method for degrading drinking water chlorination disinfection by-products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410565157.9A CN104326523A (en) | 2014-10-22 | 2014-10-22 | Method for degrading drinking water chlorination disinfection by-products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104326523A true CN104326523A (en) | 2015-02-04 |
Family
ID=52401352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410565157.9A Pending CN104326523A (en) | 2014-10-22 | 2014-10-22 | Method for degrading drinking water chlorination disinfection by-products |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104326523A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10544520B2 (en) | 2015-05-22 | 2020-01-28 | Jinan Shengquan Group Share Holding Co., Ltd. | Multifunctional viscose fiber and preparation method therefor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2286101A1 (en) * | 1999-09-27 | 2001-03-27 | Victor Injushin | Method and apparatus for treatment of water |
| CN1583580A (en) * | 2004-06-03 | 2005-02-23 | 南京大学 | Method for treating urban drinking water by radiation |
| CN101066820A (en) * | 2007-05-24 | 2007-11-07 | 上海大学 | Drinking water treating electron beam irradiation process and apparatus |
-
2014
- 2014-10-22 CN CN201410565157.9A patent/CN104326523A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2286101A1 (en) * | 1999-09-27 | 2001-03-27 | Victor Injushin | Method and apparatus for treatment of water |
| CN1583580A (en) * | 2004-06-03 | 2005-02-23 | 南京大学 | Method for treating urban drinking water by radiation |
| CN101066820A (en) * | 2007-05-24 | 2007-11-07 | 上海大学 | Drinking water treating electron beam irradiation process and apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 顾春晖等: "辐照降解饮用水氯化消毒副产物的研究", 《环境科学与技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10544520B2 (en) | 2015-05-22 | 2020-01-28 | Jinan Shengquan Group Share Holding Co., Ltd. | Multifunctional viscose fiber and preparation method therefor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wang et al. | Radiation-induced degradation of sulfamethoxazole in the presence of various inorganic anions | |
| Kim et al. | Decomposition of perfluorooctane sulfonate (PFOS) using a hybrid process with electron beam and chemical oxidants | |
| Cheng et al. | Photochemical defluorination of aqueous perfluorooctanoic acid (PFOA) by VUV/Fe3+ system | |
| Cho et al. | Inactivation of Escherichia coli by photochemical reaction of ferrioxalate at slightly acidic and near-neutral pHs | |
| Gong et al. | Ibuprofen degradation and toxicity evolution during Fe2+/Oxone/UV process | |
| Zhuan et al. | Enhanced degradation and mineralization of sulfamethoxazole by integrating gamma radiation with Fenton-like processes | |
| CN106493162A (en) | A kind of method that PAEs contaminated soils repaired by microwave reinforced calper calcium peroxide | |
| CN106082390A (en) | A kind of method that ultraviolet light and the combination of free chlorine reduce water quality comprehensive toxicity | |
| Moghaddam et al. | Removal of tylosin from aqueous solution by UV/nano Ag/S 2 O 8 2− process: Influence of operational parameters and kinetic study | |
| JP2020076780A (en) | Radioactive waste liquid treatment method | |
| Li et al. | Multiple transformation pathways of p-arsanilic acid to inorganic arsenic species in water during UV disinfection | |
| CN108585319A (en) | Utilize the method for electron beam irradiation degradation water Venlafaxine | |
| Alegbeleye et al. | Efficient removal of antibiotics from water resources is a public health priority: a critical assessment of the efficacy of some remediation strategies for antibiotics in water | |
| CN105819594A (en) | Recirculated cooling water processing method | |
| CN103435206B (en) | Organic wastewater ozonation and ionizing radiation synergetic treatment method and treatment system | |
| CN102432095A (en) | Method for degrading clopyralid in water by performing electron beam irradiation | |
| CN104326523A (en) | Method for degrading drinking water chlorination disinfection by-products | |
| Wang et al. | Sulfite activation by water film dielectric barrier discharge plasma for ibuprofen degradation: Efficiency, comparison of persulfate, mechanism, active substances dominant to pathway, and toxicity evaluation | |
| CN103482718A (en) | Method for degrading dienestrol in water body through electron beam irradiation | |
| CN101066820A (en) | Drinking water treating electron beam irradiation process and apparatus | |
| CN101704610A (en) | Method for processing waste water from production of D-(-)-alpha-aminophenylacetic acid medicinal intermediate by electron beam irradiation | |
| CN101704598A (en) | Method for degrading polychlorinated biphenyl in water body by irradiation | |
| Sorlini et al. | Arsenic oxidation by UV radiation combined with hydrogen peroxide | |
| CN1648057A (en) | Method for degradating microcystein -LR in water using radiation | |
| Zhong et al. | Identifying oxidation intermediates formed during ozone–UV of fulvic acid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150204 |
|
| WD01 | Invention patent application deemed withdrawn after publication |