CN109293081A - A kind of method of iodo contrast agent in degradation drinking water - Google Patents
A kind of method of iodo contrast agent in degradation drinking water Download PDFInfo
- Publication number
- CN109293081A CN109293081A CN201811454295.4A CN201811454295A CN109293081A CN 109293081 A CN109293081 A CN 109293081A CN 201811454295 A CN201811454295 A CN 201811454295A CN 109293081 A CN109293081 A CN 109293081A
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- China
- Prior art keywords
- degradation
- contrast agent
- drinking water
- water
- chloramines
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- 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
- C02F1/76—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
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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- 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)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Physical Water Treatments (AREA)
Abstract
The present invention relates to a kind of methods of iodo contrast agent in degradation drinking water, should method are as follows: adjust the pH to 5-9 of raw water, chloramines is added and carries out oxidation sterilizing.Compared with prior art, ICM in method of the invention degradation drinking water, without complicated interminable operating process, the degradable ICM at different pH, the ICM that can effectively degrade reach 75%.
Description
Technical field
The invention belongs to application field of water treatment, and in particular to a method of iodo contrast agent in degradation drinking water is fitted
For iodo contrast agent of degrading during drinking water treatment.
Background technique
With the fast development of global industry and the raising of living standards of the people, the type and quantity of chemicals increasingly increase
Add, therefore the chemical pollutant type and quantity for entering water environment are also increase accordingly, it is more next so as to cause water quality security
It is more serious.
Currently, the annual global consumption figure of iodo contrast agent (Iodinated contrast media, ICM) is about 3.5
×106Kg, the dosage applied to X-ray irradiation may be up to 120g/ people, most widely used ICM mainly include ionic comonomer, from
Subtype dimer, nonionic monomers and four kinds of non-ionic dimer.After sewage disposal plant effluent enters water body, ICM is general
It is difficult to degrade in natural process, to largely be detected in sewage disposal plant effluent, surface water and source water, Schulz etc.
People has found to contain non-ionic ICM in the water outlet of 46 Sewage Biological Treatment factories.Germany one about ICM in water environment
The investigation of pollution situation shows that four kinds of most common ICM (diatrizoate, iopamidol, iopromid and iomeprol) exist
It is detected extensively in sewage and water environment, the iopamidol of sewage disposal plant effluent is at concentrations up to 15 μ g/L, in surface water
It is 0.49 μ g/L in river water for 2.4 μ g/L.U.S. EPA investigation finds the ICM detected in water factory's source water in multiple cities,
Wherein the highest iopamidol concentration of recall rate is up to 2.7 μ g/L.
Since the DBPs that cholorination process generates increasingly causes to pay close attention to, in order to control in drinking water THMs and
The concentration of HAAs by-product, many water factories start to turn to chloramines disinfection by cholorination.For many water treatment plants, chloramines
Usually a kind of important spare disinfectant.But since the disinfecting power of chloramines is lower, it is often used as secondary disinfection
Agent carries out drinking water disinfection in conjunction with other strong oxidizing property disinfectants (such as chlorine, ozone).Chloramines is reacted with organic compound in water
Activity is far below free chlorine, and the DBPs especially yield of THMs generated under equal conditions is significantly lower than the yield of chlorination.With
Hypochlorous acid is compared, and monochloro amine is the weaker disinfectant of oxidisability, while but also the DBPs generated greatly reduces.Ye et al. discovery
In the case where no nitrate, the chloramination of ICM shows only micro I-THMs.
Patent CN107879522A discloses a kind of processing method for controlling halogenated disinfection by-products in water, including following step
Rapid: (1) source water enters sump through main water supply tube, adds potassium permanganate in main water supply tube water outlet end and is pre-oxidized, the height
Potassium manganate dosage is 0.5~2.0mg/L；(2) water plant fetch water from sump and add precipitated after coagulant coagulation,
Filtering, filtered water chlorination or chloramines disinfection；(3) sterilize after water sample first adjust PH to 7~10, then use wavelength for
The ultraviolet light of 150~280nm is irradiated processing, and the absorption characteristic using disinfection by-products in the wave band realizes light degradation.It should
Although patent effectively reduces the causing toxicity substance of teratogenesis in water outlet, but to light source, there are demands, and the water sample after disinfection is in
Neutral or meta-alkalescence is not suitable for directly drinking.
Summary of the invention
The purpose of the present invention is to solve the above-mentioned problems and provide it is a kind of degradation drinking water in iodo contrast agent side
Method provides application technology for drink water purifying.
The purpose of the present invention is achieved through the following technical solutions:
The method of iodo contrast agent, this method in a kind of degradation drinking water are as follows: adjust the pH to 5-9 of raw water, chloramines is added
Carry out oxidation sterilizing.In raw water ICM part be oxidized removal, achieve the purpose that degradation ICM, it can be achieved that drinking water disinfection it is same
When remove ICM.
Further, the pH to 5-7 for adjusting raw water advanced optimizes ground, adjusts the pH=7 of raw water, chloramines is in different pH
Under the conditions of value, the efficiency for removing ICM is neutrality > acidity > alkalinity.
Further, CO is added in the raw water3 2-, degradation of the chloramines to ICM can be promoted.
Further, chloramines additional amount is 200 μM/L~2mM/L, and enough chloramines can degrade most ICM.
Further, the oxidation sterilizing time is 60-80h, advanced optimizes ground, and the oxidation sterilizing time is 72h, and control is enough
Reaction time, it is ensured that drinking water sterilizes completely.
Further, the chloramines is monochloro amine, and the oxidant removal effect is significant.
Further, oxidation sterilizing carries out at room temperature.
In the presence of having monochloro amine, the degradation rate of organic compound and mechanism are extremely complex in water.Exist in monochloro amine
When, although its oxidability is much smaller than hypochlorous acid, the degradation rate of aromatic series ethers and the drug substance containing amido is fast
Chlorizating depolymerization rate under equal conditions.Compared with chlorine, the penetration capacity of chloramines is good, stability is high, the duration is long, can
It is better protected from the growth of microorganism in drinking water water supply distribution system network, in addition, chloramines disinfection can also significantly improve water body
Taste and smell.
As the above scheme is adopted, compared with prior art, the invention has the characteristics that:
(1) can effectively degrade iodo contrast agent at different pH, wherein removal efficiency highest under neutrallty condition.
(2) operation of the present invention is simple, easy control of reaction conditions, and used chemical reagent and material are that water process is used
Conventional products, are not introduced into other poisonous and harmful substances, and safety is especially prominent.
(3) reaction also can remove iodo contrast agent by the effect of chloramines under room temperature environment in the present invention.
Detailed description of the invention
Fig. 1 is impact effect figure of the different monochloro amine dosages to degradation Iopromide；
Fig. 2 is impact effect figure of the different pH to degradation Iopromide；
Fig. 3 is impact effect figure of the different ions to degradation Iopromide.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
By taking Iopromide as an example, 10 μM are added in raw water, controlled at 25 DEG C, pH 7 adds one into reaction solution
Chloramines is reacted.Calculated by material concentration in water, chloramines dosage be respectively 200 μM/L, 500 μM/L, 1mM/L, 2mM/L
Under the conditions of, the concentration variation of Iopromide is as shown in Figure 1.
As can be seen from Figure 1 under the conditions of different chloramines dosages, the degradation rate difference of Iopromide is big.Low concentration chloramines
In reaction solution, chloramines degradation ICM is about 45%, and when chloramines dosage reaches 2mM/L, chloramines degradation ICM reaches 75%.Thus
The most Iopromide it is found that enough chloramines can degrade.
Embodiment 2
By taking Iopromide as an example, 10 μM of Iopromides are added in raw water and adjust reaction solution controlled at 25 DEG C
PH, monochloro amine dosage 1mM/L.When pH is respectively 5,6,7,8,9, the concentration variation of Iopromide is as shown in Figure 2.
Chloramines degrade in neutral conditions Iopromide effect it is relatively good extremely strong, about 70% Iopromide can be removed.
Under acid or alkaline conditions, the not neutral height of removal efficiency.Removal efficiency are as follows: neutral > acidity > alkalinity.
Embodiment 3
By taking Iopromide as an example, 10 μM of Iopromides are added in raw water, controlled at 25 DEG C, adjusting reaction pH is 7,
The CO of 100 μM/L is added in water by monochloro amine dosage 2mM/L3 2-、Br-、NH4+, the concentration variation of Iopromide is as shown in Figure 3.
In Br-、NH4+In the presence of, it can be seen that degradation of the chloramines to Iopromide can be inhibited.And there are CO in water3 2-
When, degradation of the chloramines to Iopromide can be promoted.
The above description of the embodiments is intended to facilitate ordinary skill in the art to understand and use the invention.
Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein general
Principle is applied in other embodiments without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments, ability
Field technique personnel announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be of the invention
Within protection scope.
Claims (9)
1. a kind of method of iodo contrast agent in degradation drinking water, which is characterized in that this method are as follows: the pH to 5-9 of raw water is adjusted,
Chloramines is added and carries out oxidation sterilizing.
2. the method for iodo contrast agent in a kind of degradation drinking water according to claim 1, which is characterized in that adjust raw water
PH to 5-7.
3. the method for iodo contrast agent in a kind of degradation drinking water according to claim 2, which is characterized in that adjust raw water
PH=7.
4. the method for iodo contrast agent in a kind of degradation drinking water according to claim 1, which is characterized in that the original
CO is added in water3 2-。
5. the method for iodo contrast agent in a kind of degradation drinking water according to claim 1, which is characterized in that chloramines is added
Amount is 200 μM/L~2mM/L.
6. the method for iodo contrast agent in a kind of degradation drinking water according to claim 1, which is characterized in that oxidation sterilizing
Time is 60-80h.
7. the method for iodo contrast agent in a kind of degradation drinking water according to claim 6, which is characterized in that oxidation sterilizing
Time is 72h.
8. the method for iodo contrast agent in a kind of degradation drinking water according to claim 1, which is characterized in that the chlorine
Amine is monochloro amine.
9. the method for iodo contrast agent in a kind of degradation drinking water according to claim 1, which is characterized in that oxidation sterilizing
It carries out at room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811454295.4A CN109293081A (en) | 2018-11-30 | 2018-11-30 | A kind of method of iodo contrast agent in degradation drinking water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811454295.4A CN109293081A (en) | 2018-11-30 | 2018-11-30 | A kind of method of iodo contrast agent in degradation drinking water |
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| CN109293081A true CN109293081A (en) | 2019-02-01 |
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| CN201811454295.4A Pending CN109293081A (en) | 2018-11-30 | 2018-11-30 | A kind of method of iodo contrast agent in degradation drinking water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110282693A (en) * | 2019-07-31 | 2019-09-27 | 上海应用技术大学 | A kind of method that ultraviolet/chlorine group technology removes Iopamidol in water removal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101597100A (en) * | 2008-06-02 | 2009-12-09 | 南开大学 | Tap water dioxide peroxide-chloramines adds the method for combined disinfection in proper order |
| CN104609532A (en) * | 2015-02-11 | 2015-05-13 | 清华大学 | Method for removing PPCPs in treatment process of drinking water |
| CN105967384A (en) * | 2016-05-24 | 2016-09-28 | 同济大学 | Method for controlling generation of iodo-trihalomethanes in drinking water |
| CN106630321A (en) * | 2016-11-17 | 2017-05-10 | 滨州学院 | Treatment process for disinfection by-products of drinking water |
-
2018
- 2018-11-30 CN CN201811454295.4A patent/CN109293081A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101597100A (en) * | 2008-06-02 | 2009-12-09 | 南开大学 | Tap water dioxide peroxide-chloramines adds the method for combined disinfection in proper order |
| CN104609532A (en) * | 2015-02-11 | 2015-05-13 | 清华大学 | Method for removing PPCPs in treatment process of drinking water |
| CN105967384A (en) * | 2016-05-24 | 2016-09-28 | 同济大学 | Method for controlling generation of iodo-trihalomethanes in drinking water |
| CN106630321A (en) * | 2016-11-17 | 2017-05-10 | 滨州学院 | Treatment process for disinfection by-products of drinking water |
Non-Patent Citations (1)
| Title |
|---|
| FU-XIANG TIAN ET AL.: "Chlor(am)ination of iopamidol: kinetics, pathways and disinfection by-products formation", 《CHEMOSPHERE》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110282693A (en) * | 2019-07-31 | 2019-09-27 | 上海应用技术大学 | A kind of method that ultraviolet/chlorine group technology removes Iopamidol in water removal |
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