CN215798920U - Drinking water purification device capable of preventing membrane pollution - Google Patents
Drinking water purification device capable of preventing membrane pollution Download PDFInfo
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- CN215798920U CN215798920U CN202122393495.7U CN202122393495U CN215798920U CN 215798920 U CN215798920 U CN 215798920U CN 202122393495 U CN202122393495 U CN 202122393495U CN 215798920 U CN215798920 U CN 215798920U
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- 239000012528 membrane Substances 0.000 title claims abstract description 99
- 238000000746 purification Methods 0.000 title claims abstract description 21
- 239000003651 drinking water Substances 0.000 title claims abstract description 19
- 235000020188 drinking water Nutrition 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 229910001868 water Inorganic materials 0.000 claims abstract description 52
- 238000001914 filtration Methods 0.000 claims abstract description 38
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000004140 cleaning Methods 0.000 claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 238000011109 contamination Methods 0.000 claims abstract description 4
- 238000011010 flushing procedure Methods 0.000 claims abstract description 4
- 230000001105 regulatory effect Effects 0.000 claims description 19
- 238000005273 aeration Methods 0.000 claims description 17
- 238000011045 prefiltration Methods 0.000 claims description 12
- 238000011001 backwashing Methods 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 239000006004 Quartz sand Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000005342 ion exchange Methods 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims 3
- 238000009285 membrane fouling Methods 0.000 claims 2
- 239000011148 porous material Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000700605 Viruses Species 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000005374 membrane filtration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000588724 Escherichia coli Species 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002384 drinking water standard Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000003834 intracellular effect Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002366 mineral element Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
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- Treatment Of Water By Oxidation Or Reduction (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to a drinking water purification apparatus for preventing membrane contamination, comprising: the pre-filtering module is arranged at the front end of the membrane module, and an inlet of the pre-filtering module is connected with source water and used for filtering the source water passing through; the membrane self-cleaning module is positioned at the downstream of the pre-filtering module, is connected with the water outlet end of the pre-filtering module and is used for generating micro-bubbles at the bottom of the membrane module and flushing the membrane module through the micro-bubbles; and the ozone purification module is positioned at the downstream of the membrane module, is connected with the water production pipe of the membrane module and is used for purifying the membrane module through ozone. The utility model can avoid membrane pollution and ensure water quality.
Description
Technical Field
The utility model relates to the field of water purification equipment, in particular to a drinking water purification device capable of preventing membrane pollution.
Background
Surface water (rivers, lakes, marshes and glaciers) meeting the drinking water source can be treated to be used as drinking water, and when mineral elements in the drinking water source water meet the drinking water standard, the escherichia coli number, turbidity, chroma and COD content in the water become key factors for judging whether the drinking water can be used. The traditional treatment process mainly carries out advanced treatment by technologies such as coagulation, sedimentation, clarification, filtration, disinfection and the like. The traditional process needs a large floor area, the investment and operation cost is high, and the purification effect is often not good.
The membrane technology is widely applied to drinking water treatment as a new drinking water treatment technology. However, when the membrane is used for a long time, the pollution speed of the membrane component is increased without paying attention to maintenance, the membrane flux is reduced, the service life of the membrane is shortened, and the reliability and the economical efficiency of the membrane separation technology are influenced. Therefore, periodic physical cleaning and chemical cleaning of the membrane module are required in time. Conventional physical cleaning includes forward cleaning, reverse cleaning, and gas cleaning, while chemical cleaning is typically treated with agents, commonly used agents including sodium hypochlorite, acids, and bases. However, these measures have low cleaning efficiency and general cleaning effect, and cannot completely clean the membrane, thereby failing to meet the requirements of use.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a drinking water purifying device capable of preventing membrane pollution, which can avoid membrane pollution so as to ensure water quality.
The technical scheme adopted by the utility model for solving the technical problems is as follows: provided is a drinking water purification apparatus preventing membrane contamination, including: the pre-filtering module is arranged at the front end of the membrane module, and an inlet of the pre-filtering module is connected with source water and used for filtering the source water passing through; the membrane self-cleaning module is positioned at the downstream of the pre-filtering module, is connected with the water outlet end of the pre-filtering module and is used for generating micro-bubbles at the bottom of the membrane module and flushing the membrane module through the micro-bubbles; and the ozone purification module is positioned at the downstream of the membrane module, is connected with the water production pipe of the membrane module and is used for purifying the membrane module through ozone.
The pre-filter adopted by the pre-filtering module is a laminated filter, a quartz sand filter, an activated carbon filter, a cartridge filter and/or an ion exchange filter.
The membrane self-cleaning module comprises a jet device and a pressure regulating device which are connected in parallel, the inlet ends of the jet device and the pressure regulating device which are connected in parallel are connected with the water outlet end of the pre-filtering module, the outlet ends of the jet device and the pressure regulating device which are connected in parallel are connected with the bottom of the membrane module, and the jet device and the pressure regulating device which are connected in parallel are used for forming micro-bubbles in water passing through the pre-filtering module; the bottom of the membrane component is provided with a plurality of aeration holes, and the aeration holes are used for forming radial or spiral micro-bubbles in water passing through the jet device and the pressure regulating device which are connected in parallel.
The jet device is a Venturi tube, and the pressure regulating device is a pressure reducing valve.
The aeration holes are distributed at the bottom of the membrane component in a radial or non-shape.
The ozone purification module comprises an ozone generator, the gas production end of the ozone generator is connected with the water production pipe of the membrane module through a backwashing pipe, and a backwashing electric valve is arranged on the backwashing pipe.
Advantageous effects
Due to the adoption of the technical scheme, compared with the prior art, the utility model has the following advantages and positive effects: according to the utility model, the membrane treatment load is effectively reduced through the pre-filtering module, the membrane module is self-cleaned through the micro bubbles formed by pressure drop generated by the ejector and the aeration holes, and pollutants in the pore passages and pore diameters in the membrane can be oxidized and decomposed from inside to outside by cleaning the membrane module through ozone. In addition, suspended matters, colloid, turbidity, chromaticity and peculiar smell in water can be preliminarily filtered through the pre-filtering module; macromolecular organic matters, bacteria and viruses are removed through a membrane filtration module; the long-term stable operation of the membrane can be ensured through various purification functions, the high efficiency of the system is improved, and the quality of the effluent is ensured.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The utility model will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
An embodiment of the present invention relates to a drinking water purification apparatus for preventing membrane contamination, as shown in fig. 1, including: the pre-filtering module 1 is arranged at the front end of the membrane module 6, and an inlet of the pre-filtering module is connected with source water and used for filtering the source water passing through; the membrane self-cleaning module is positioned at the downstream of the pre-filtering module 1, is connected with the water outlet end of the pre-filtering module 1, and is used for generating micro-bubbles at the bottom of the membrane module 6 and flushing the membrane module 6 through the micro-bubbles; and the ozone purification module is positioned at the downstream of the membrane module 6, is connected with a water production pipe of the membrane module 6 and is used for purifying the membrane module 6 through ozone.
Wherein, prefiltration module 1 connects source water, and rivers pass through the water inlet of the prefilter in prefiltration module 1, get into in the prefilter, and impurity particle is held back in the medium, and the water through the prefiltration flows out from the main entrance of prefiltration module 1. When the running resistance of the pre-filtering module is increased to a certain degree, the pre-filter needs to be backwashed to remove impurities in the filtering layer, so that the pre-filter 1 is restored to the initial filtering state. Therefore, when the water flow of the source water passes through the pre-filtering module 1, the water flow can be filtered, so that suspended matters, colloid, turbidity, chromaticity and peculiar smell are removed, the membrane treatment load is effectively reduced, and a protection mechanism can be generated for the membrane module.
The prefilter that prefilter module adopted in this embodiment contains lamination filter, quartz sand filter, active carbon filter, cartridge filter and ion exchange filter etc. can carry out primary filtration to the water source through different prefilters, removes most suspended solid and turbidity in the aquatic, has improved membrane quality of intaking, reduces membrane treatment load.
The membrane self-cleaning module comprises a jet device 3 and a pressure regulating device 2 which are connected in parallel, the inlet ends of the jet device 3 and the pressure regulating device 2 which are connected in parallel are connected with the water outlet end of the pre-filtering module 1, the outlet end of the jet device 3 and the pressure regulating device 2 which are connected in parallel are connected with the bottom of the membrane component 6, and the jet device 3 and the pressure regulating device 2 which are connected in parallel are used for forming micro-bubbles in water passing through the pre-filtering module 1; the bottom of the membrane component 6 is provided with a plurality of aeration holes 4, and the aeration holes 4 are used for forming radial or spiral micro-bubbles in the water passing through the parallel jet device 3 and the pressure regulating device 2. The membrane self-cleaning module can generate a large amount of micro-bubbles, so that the membrane module can be flushed, and the membrane self-cleaning module can be used as a self-cleaning mechanism of the membrane module.
The purpose of setting up pressure regulating device 2 in this embodiment is in order to adjust follow-up connection pipe section flow and pressure, and consequently pressure regulating device adopts the relief pressure valve to realize, and the purpose of setting up fluidic device 3 is in order to make can produce the microbubble in the follow-up rivers, and consequently fluidic device adopts venturi, produces the negative pressure through venturi's mechanical structure to reduce pressure and form the microbubble.
Specifically, at the inlet of the membrane pool 5, the flow and pressure of membrane inlet water are adjusted due to the action of the pressure reducing valve and the venturi tube, when water flows through the venturi tube, pressure is reduced due to the mechanical structure of the venturi tube, micro bubbles are formed, and then the water flow which generates the micro bubbles enters the bottom of the membrane assembly, and because the membrane assembly is provided with the aeration holes 4, the aeration holes 4 at the bottom can generate pressure drop again, so that a large number of micro bubbles can be formed at the opening of the aeration holes 4, and the micro bubbles can prevent the enrichment of particulate matters on the surface of the membrane, on the other hand, the membrane filaments can be washed by the micro bubbles, the accumulation of the particulate matters on the surface of the membrane is removed and prevented, and the self-cleaning function of the membrane assembly is achieved.
The aeration holes 4 in the embodiment can adopt a mode of a microporous aerator and perforated aeration pipes, and can be distributed at the bottom of the membrane component in a radial or non-shape, and the arrangement, the size and the number of the aeration holes are required to ensure uniform aeration and high utilization rate.
The ozone purification module comprises an ozone generator 8, the gas production end of the ozone generator 8 is connected with the water production pipe of the membrane module 6 through a backwashing pipe, and a backwashing electric valve 7 is arranged on the backwashing pipe. The ozone purification module is arranged on a water production pipeline of the membrane module 6, so that the membrane module 6 can be backwashed. Because ozone is a strong oxidant, after dissolved in water, inorganic matters and organic matters in the water are directly oxidized or indirectly oxidized by using a large amount of hydroxyl radicals and nascent oxygen generated in the reaction, and the inorganic matters and the organic matters enter cells of bacteria to oxidize intracellular organic matters, thereby achieving the purposes of sterilization, disinfection and water quality purification. When the system runs for a long time or the water source water fluctuates greatly to cause the operation resistance of the membrane component to be increased and the water production capacity to be reduced, the backwashing electric valve 7 is opened, and pollutants in the inner pore canal and the pore diameter of the membrane component are subjected to oxidative decomposition by ozone from inside to outside so as to recover the treatment capacity of the membrane component. When backwashing is carried out, the membrane self-cleaning module can generate a large amount of micro-bubbles at the bottom of the membrane module, so the micro-bubbles consist of ozone, oxygen, nitrogen and water, membrane filaments can be effectively flushed, and the service life of the membrane module is prolonged.
The utility model can effectively reduce the membrane processing load through the pre-filtering module, and can realize self-cleaning treatment on the membrane component through the micro-bubbles formed by pressure drop generated by the ejector and the aeration holes, and the membrane component can be cleaned through ozone, so that pollutants in the pore canal and the pore diameter in the membrane can be oxidized and decomposed from inside to outside. In addition, suspended matters, colloid, turbidity, chromaticity and peculiar smell in water can be preliminarily filtered through the pre-filtering module; macromolecular organic matters, bacteria and viruses are removed through a membrane filtration module; the long-term stable operation of the membrane can be ensured through various purification functions, the high efficiency of the system is improved, and the quality of the effluent is ensured.
Claims (6)
1. A drinking water purification apparatus for preventing membrane fouling, comprising: the pre-filtering module is arranged at the front end of the membrane module, and an inlet of the pre-filtering module is connected with source water and used for filtering the source water passing through; the membrane self-cleaning module is positioned at the downstream of the pre-filtering module, is connected with the water outlet end of the pre-filtering module and is used for generating micro-bubbles at the bottom of the membrane module and flushing the membrane module through the micro-bubbles; and the ozone purification module is positioned at the downstream of the membrane module, is connected with the water production pipe of the membrane module and is used for purifying the membrane module through ozone.
2. The apparatus for purifying drinking water with membrane fouling prevention according to claim 1, wherein the pre-filter employed by the pre-filtering module is a laminated filter, a quartz sand filter, an activated carbon filter, a cartridge filter and/or an ion exchange filter.
3. The apparatus for purifying drinking water with membrane pollution prevention as claimed in claim 1, wherein the membrane self-cleaning module comprises a jet device and a pressure regulating device connected in parallel, the inlet end of the jet device and the pressure regulating device connected in parallel are connected with the outlet end of the pre-filtering module, the outlet end of the jet device and the pressure regulating device connected in parallel are connected with the bottom of the membrane module, and the jet device and the pressure regulating device connected in parallel are used for forming micro-bubbles in the water passing through the pre-filtering module; the bottom of the membrane component is provided with a plurality of aeration holes, and the aeration holes are used for forming radial or spiral micro-bubbles in water passing through the jet device and the pressure regulating device which are connected in parallel.
4. A drinking water purification apparatus for preventing membrane contamination according to claim 3, wherein the jet device is a venturi tube and the pressure regulating device is a pressure reducing valve.
5. The apparatus for purifying drinking water with membrane pollution prevention according to claim 3, wherein the aeration holes are distributed in a radial or "not" shape at the bottom of the membrane module.
6. The device for purifying drinking water capable of preventing membrane pollution as claimed in claim 1, wherein the ozone purification module comprises an ozone generator, a gas production end of the ozone generator is connected with a water production pipe of the membrane module through a backwashing pipe, and a backwashing electric valve is arranged on the backwashing pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122393495.7U CN215798920U (en) | 2021-09-30 | 2021-09-30 | Drinking water purification device capable of preventing membrane pollution |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122393495.7U CN215798920U (en) | 2021-09-30 | 2021-09-30 | Drinking water purification device capable of preventing membrane pollution |
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| CN215798920U true CN215798920U (en) | 2022-02-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115340212A (en) * | 2022-08-19 | 2022-11-15 | 山东祥桓环境科技有限公司 | Biomass triple-effect coupling sewage treatment system and method |
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- 2021-09-30 CN CN202122393495.7U patent/CN215798920U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115340212A (en) * | 2022-08-19 | 2022-11-15 | 山东祥桓环境科技有限公司 | Biomass triple-effect coupling sewage treatment system and method |
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