CN116135795A - Method for adding reverse osmosis pretreatment chlorine dioxide - Google Patents
Method for adding reverse osmosis pretreatment chlorine dioxide Download PDFInfo
- Publication number
- CN116135795A CN116135795A CN202310124589.5A CN202310124589A CN116135795A CN 116135795 A CN116135795 A CN 116135795A CN 202310124589 A CN202310124589 A CN 202310124589A CN 116135795 A CN116135795 A CN 116135795A
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- China
- Prior art keywords
- chlorine dioxide
- water
- reverse osmosis
- pretreated
- stirring
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Links
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 title claims abstract description 106
- 239000004155 Chlorine dioxide Substances 0.000 title claims abstract description 53
- 235000019398 chlorine dioxide Nutrition 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 15
- 230000001954 sterilising effect Effects 0.000 claims abstract description 12
- 238000010521 absorption reaction Methods 0.000 claims abstract description 11
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims description 24
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 11
- 239000000460 chlorine Substances 0.000 claims description 11
- 229910052801 chlorine Inorganic materials 0.000 claims description 11
- 239000012528 membrane Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 239000003139 biocide Substances 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 210000003855 cell nucleus Anatomy 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
Images
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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/29—Chlorine compounds
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a method for adding reverse osmosis pretreated chlorine dioxide, which comprises the following steps: performing on-site process and pipeline analysis, and in order to ensure that the chlorine dioxide and the water have sufficient mixing and necessary contact time, modifying the adding point of the chlorine dioxide to the total water absorption main pipe of the 3 groups of pumps of the pressurizing pump group for secondary filtration; after chlorine dioxide is added into water, the chlorine dioxide is pumped into the pump together with the water through 3 groups of pumps, is fully mixed with the water and reaches the maximum contact area, and then enters a secondary filter along with the water for sterilization. The invention aims to provide a method for adding reverse osmosis pretreatment chlorine dioxide, which ensures that the chlorine dioxide realizes safe and efficient sterilization and is better served for a membrane system.
Description
Technical Field
The invention relates to a method for adding reverse osmosis pretreated chlorine dioxide.
Background
In reverse osmosis water treatment systems, the addition of a pretreatment biocide plays a critical role. Currently, the sterilization methods for water treatment are: adding chlorine, ozone and chlorine dioxide. The chlorine dioxide is used for disinfecting water, is a commonly used disinfection mode at present, and can quickly and effectively kill bacteria and plankton in the water, so that the water treatment achieves an ideal effect. Proper amount of chlorine dioxide is added into the reverse osmosis pretreatment system, so that the reverse osmosis membrane system can operate more stably.
The disinfection principle is as follows: the chlorine dioxide generator is adopted to prepare chlorine dioxide on site, then a certain amount of chlorine dioxide agents are added into the pipeline through the water injector according to the water quality, and when the chlorine dioxide agents reach the adding point, the chlorine dioxide agents are quickly attached to the surface of bacteria, gradually penetrate into bacterial cells by utilizing strong oxidizing property, oxidize and kill cell nuclei, so that the aim of water treatment and sterilization is fulfilled.
The three parts of the water supply of the main power supply plant are deep water treatment systems, and the water treatment systems are divided into a new system and an old system. The bactericide used for pretreatment of the new and old systems is chlorine dioxide, and the chlorine dioxide is added into the pretreatment system for sterilization and disinfection, so that microorganism breeding of the systems is prevented.
The adding point of the chlorine dioxide of the new and old systems is at the water inlet pipe of the secondary filtration. In order to ensure good sterilization effect, laboratory staff carries out residual chlorine detection on the secondary filtered water and the reverse osmosis water. The residual chlorine value is set as follows: filtering the water to obtain residual chlorine of 0.3-1.0mg/L; the residual chlorine value of the effluent of the activated carbon is less than 0.1mg/L.
In the daily detection process, the residual chlorine value of the secondary filtering water outlet point is found to be suddenly high or suddenly low, and the set residual chlorine value cannot be reached, so that the pretreatment sterilization effect is not ideal. The cartridge filter of the cartridge filter is replaced frequently before reverse osmosis. And opening the pipeline for inspection, and finding that biological slime is deposited on the inner wall of the pipeline and the cartridge filter element of the cartridge filter.
Disclosure of Invention
The invention aims to provide a method for adding reverse osmosis pretreatment chlorine dioxide, which ensures that the chlorine dioxide realizes safe and efficient sterilization and is better served for a membrane system.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention relates to a method for adding reverse osmosis pretreatment chlorine dioxide, which comprises the following steps: performing on-site process and pipeline analysis, and in order to ensure that the chlorine dioxide and the water have sufficient mixing and necessary contact time, modifying the adding point of the chlorine dioxide to the total water absorption main pipe of the 3 groups of pumps of the pressurizing pump group for secondary filtration; after chlorine dioxide is added into water, the chlorine dioxide is pumped into the pump together with the water through 3 groups of pumps, is fully mixed with the water and reaches the maximum contact area, and then enters a secondary filter along with the water for sterilization.
Further, after the chlorine dioxide adding point is modified, the residual chlorine value of the secondary filtered water is stabilized at 0.3-1.0mg/L.
Further, the total water absorption main pipe is positioned behind the adding point and is also provided with at least one stirring structure.
Further, the stirring structure is a filter screen which is obliquely arranged, and two ends of the filter screen are welded and fixed on the inner wall of the total water absorption main pipe.
Further, the inclination angle of the filter screen is 30-60 degrees.
Further, the stirring structure is a closed stirring bin, and stirring blades are arranged in the stirring bin.
Further, the stirring blade is positioned at the water inlet so as to rotate under the impact of the water again flow.
Further, the stirring blade is driven to rotate by a driving motor.
Compared with the prior art, the invention has the beneficial technical effects that:
drawings
The invention is further described with reference to the following description of the drawings.
FIG. 1 shows the presence of biological contamination of the inner wall of a pipe;
FIG. 2 is a view of the inner wall of a pipe without contamination;
FIG. 3 is a graph of the point of chlorine dioxide addition to a pretreatment system prior to modification;
figure 4 dosing point of chlorine dioxide in pretreatment system after modification.
Detailed Description
A method for adding reverse osmosis pretreated chlorine dioxide, comprising: performing on-site process and pipeline analysis, and in order to ensure that the chlorine dioxide and the water have sufficient mixing and necessary contact time, modifying the adding point of the chlorine dioxide to the total water absorption main pipe of the 3 groups of pumps of the pressurizing pump group for secondary filtration; after chlorine dioxide is added into water, the chlorine dioxide is pumped into the pump together with the water through 3 groups of pumps, is fully mixed with the water and reaches the maximum contact area, and then enters a secondary filter along with the water for sterilization.
After the chlorine dioxide adding point is modified, the residual chlorine value of the secondary filtered water is stabilized at 0.3-1.0mg/L. The total water absorption main pipe is positioned behind the adding point and is also provided with at least one stirring structure, and is particularly positioned between the three groups of pumps and the secondary filter.
The stirring structure is a filter screen which is obliquely arranged, two ends of the filter screen are welded and fixed on the inner wall of the total water absorption main pipe, and the inclination angle of the filter screen is 30-60 degrees. Or the stirring structure is a closed stirring bin, and stirring blades are arranged in the stirring bin. The stirring blade is positioned at the water inlet so as to rotate under the impact of the water again. Or the stirring blade is driven to rotate by a driving motor.
Chlorine dioxide is added to the total water absorption main pipe of 3 groups of pumps according to the water inflow of the secondary filters of the new system and the old system. After chlorine dioxide is added into water, the chlorine dioxide is pumped into the pump together with the water through 3 groups of pumps, is fully mixed with the water and reaches the maximum contact area, and then enters a secondary filter along with the water for sterilization. The inspector detects the residual chlorine value (0.3-1.0 mg/L) of the secondary filtered water once a day. Realize the efficient addition and sterilization of chlorine dioxide and ensure the stable operation of the reverse osmosis system.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (8)
1. The method for adding the reverse osmosis pretreated chlorine dioxide is characterized by comprising the following steps of: performing on-site process and pipeline analysis, and in order to ensure that the chlorine dioxide and the water have sufficient mixing and necessary contact time, modifying the adding point of the chlorine dioxide to the total water absorption main pipe of the 3 groups of pumps of the pressurizing pump group for secondary filtration; after chlorine dioxide is added into water, the chlorine dioxide is pumped into the pump together with the water through 3 groups of pumps, is fully mixed with the water and reaches the maximum contact area, and then enters a secondary filter along with the water for sterilization.
2. The method for adding the chlorine dioxide pretreated by reverse osmosis according to claim 1, wherein after the chlorine dioxide adding point is modified, the residual chlorine value of the secondary filtered water is stabilized at 0.3-1.0mg/L.
3. The method for adding the reverse osmosis pretreated chlorine dioxide according to claim 1, wherein the total water absorption main pipe is further provided with at least one stirring structure behind the adding point.
4. The method for adding the reverse osmosis pretreated chlorine dioxide according to claim 1, wherein the stirring structure is a filter screen which is obliquely arranged, and two ends of the filter screen are welded and fixed on the inner wall of the total water absorption main pipe.
5. The method for adding chlorine dioxide pretreated by reverse osmosis according to claim 4, wherein the inclination angle of the filter screen is 30-60 °.
6. The method for adding the reverse osmosis pretreated chlorine dioxide according to claim 1, wherein the stirring structure is a closed stirring bin, and stirring blades are arranged in the stirring bin.
7. The method of claim 7, wherein the stirring blade is positioned at the water inlet to facilitate rotation under the impact of the re-water flow.
8. The method for adding the reverse osmosis pretreated chlorine dioxide according to claim 7, wherein the stirring blade is driven to rotate by a driving motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310124589.5A CN116135795A (en) | 2023-02-16 | 2023-02-16 | Method for adding reverse osmosis pretreatment chlorine dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310124589.5A CN116135795A (en) | 2023-02-16 | 2023-02-16 | Method for adding reverse osmosis pretreatment chlorine dioxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116135795A true CN116135795A (en) | 2023-05-19 |
Family
ID=86333425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310124589.5A Pending CN116135795A (en) | 2023-02-16 | 2023-02-16 | Method for adding reverse osmosis pretreatment chlorine dioxide |
Country Status (1)
| Country | Link |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101514060A (en) * | 2009-03-31 | 2009-08-26 | 上海穆特环保科技有限公司 | Device for treating emergency drinking water |
| CN101564657A (en) * | 2008-04-21 | 2009-10-28 | 袁世燕 | Medicine submerged jet mixer |
| CN101885556A (en) * | 2010-06-13 | 2010-11-17 | 四川大学 | Simple disinfection method for medicinal wastewater of hygiene hospital |
| CN202315788U (en) * | 2011-12-02 | 2012-07-11 | 济宁市鲁源水处理有限公司 | Electric stirring type pipeline mixer |
| CN202893218U (en) * | 2012-11-23 | 2013-04-24 | 重庆大学 | Low water loss pipeline mixer |
| CN104405353A (en) * | 2014-12-05 | 2015-03-11 | 中国石油天然气股份有限公司 | Chemical-flooding sterilization method |
| CN205773764U (en) * | 2016-06-29 | 2016-12-07 | 杭州真水流体技术有限公司 | A kind of preposition water treatment system adding antibacterial |
| CN107428566A (en) * | 2015-03-31 | 2017-12-01 | 栗田工业株式会社 | The operation method and reverse osmosis membrane treatment system of reverse osmosis membrane treatment system |
| CN206778215U (en) * | 2017-05-05 | 2017-12-22 | 江门市崖门新财富环保工业有限公司 | Waterpower mixing reactor |
| CN209791316U (en) * | 2019-03-01 | 2019-12-17 | 上海德宝密封件有限公司 | Self-flowing collision stirring channel |
| CN110893321A (en) * | 2018-09-12 | 2020-03-20 | 无锡利信能源科技有限公司 | System and method for preventing reverse osmosis pollution blocking |
| CN112624391A (en) * | 2020-11-13 | 2021-04-09 | 浙江恒洋热电有限公司 | Economic raw water sterilization and algae removal process |
-
2023
- 2023-02-16 CN CN202310124589.5A patent/CN116135795A/en active Pending
Patent Citations (12)
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|---|---|---|---|---|
| CN101564657A (en) * | 2008-04-21 | 2009-10-28 | 袁世燕 | Medicine submerged jet mixer |
| CN101514060A (en) * | 2009-03-31 | 2009-08-26 | 上海穆特环保科技有限公司 | Device for treating emergency drinking water |
| CN101885556A (en) * | 2010-06-13 | 2010-11-17 | 四川大学 | Simple disinfection method for medicinal wastewater of hygiene hospital |
| CN202315788U (en) * | 2011-12-02 | 2012-07-11 | 济宁市鲁源水处理有限公司 | Electric stirring type pipeline mixer |
| CN202893218U (en) * | 2012-11-23 | 2013-04-24 | 重庆大学 | Low water loss pipeline mixer |
| CN104405353A (en) * | 2014-12-05 | 2015-03-11 | 中国石油天然气股份有限公司 | Chemical-flooding sterilization method |
| CN107428566A (en) * | 2015-03-31 | 2017-12-01 | 栗田工业株式会社 | The operation method and reverse osmosis membrane treatment system of reverse osmosis membrane treatment system |
| CN205773764U (en) * | 2016-06-29 | 2016-12-07 | 杭州真水流体技术有限公司 | A kind of preposition water treatment system adding antibacterial |
| CN206778215U (en) * | 2017-05-05 | 2017-12-22 | 江门市崖门新财富环保工业有限公司 | Waterpower mixing reactor |
| CN110893321A (en) * | 2018-09-12 | 2020-03-20 | 无锡利信能源科技有限公司 | System and method for preventing reverse osmosis pollution blocking |
| CN209791316U (en) * | 2019-03-01 | 2019-12-17 | 上海德宝密封件有限公司 | Self-flowing collision stirring channel |
| CN112624391A (en) * | 2020-11-13 | 2021-04-09 | 浙江恒洋热电有限公司 | Economic raw water sterilization and algae removal process |
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