CN217367898U - In-situ cleaning device for ceramic flat sheet membrane and in-situ treatment system thereof - Google Patents
In-situ cleaning device for ceramic flat sheet membrane and in-situ treatment system thereof Download PDFInfo
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- CN217367898U CN217367898U CN202220639105.1U CN202220639105U CN217367898U CN 217367898 U CN217367898 U CN 217367898U CN 202220639105 U CN202220639105 U CN 202220639105U CN 217367898 U CN217367898 U CN 217367898U
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- 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
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The utility model provides an in situ cleaning device of dull and stereotyped membrane of pottery and normal position processing system thereof, the in situ cleaning device of dull and stereotyped membrane of pottery includes flushing head, flushing pipe, gas-liquid mixer, inlet tube and ozone intake pipe, inlet tube, ozone intake pipe respectively with the inlet tube of gas-liquid mixer, intake-tube connection, the export and the flushing pipe of gas-liquid mixer are connected, the flushing pipe is connected with the water inlet of flushing head, the outside of the delivery port of flushing head is equipped with the sealing member who is used for with the contact of dull and stereotyped membrane of pottery. By adopting the technical scheme of the utility model, ozone with strong oxidizing property is conveyed to the surface of the polluted ceramic membrane through washing water, thereby realizing the high-efficiency removal of pollutants from the ceramic membrane and prolonging the operation time of the ceramic membrane; the cleaning process and the filtering process can be carried out synchronously without long-time halt; convenient operation and low cost.
Description
Technical Field
The utility model relates to a membrane cleaning technical field especially relates to an in situ cleaning device of dull and stereotyped membrane of pottery and normal position processing system thereof.
Background
Water resource shortage and water source pollution problems are important environmental issues that arise with industrialization and urbanization. In the aspects of water purification and water resource recycling, the membrane separation technology is widely applied, and has the advantages of low energy consumption, high separation speed, low chemical agent dosage, compact equipment, high automation degree and the like. In recent years, the ceramic membrane technology has attracted much attention and is increasingly used in industrial wastewater treatment projects. Compared with the traditional fiber membrane, the ceramic flat membrane has better mechanical property and chemical stability, more stable operation, longer service life of the membrane body and lower operation and maintenance cost. In the filtering process, solid suspended matters, colloids and microorganisms in the water body, particularly some high molecular organic matters are intercepted by the membrane body and are enriched in membrane pores and the surface of the membrane, so that membrane pollution becomes an inevitable problem in the operation of the membrane separation process. Ceramic membranes are no exception, and long-term membrane fouling can cause the reduction of permeability and the increase of transmembrane pressure difference, thereby affecting the overall performance of the system. It is therefore necessary to clean the contaminated ceramic membrane in a timely manner.
However, conventional cleaning of flat ceramic membranes involves backwashing, gas washing and chemical soaking. These methods can alleviate the membrane fouling problem to some extent, but the effect is not stable. For the immersion type filtration, most of the trapped pollutants are re-dispersed in the water body to be filtered by backwashing, and the pollutants are quickly adhered to the surface of the membrane in the filtration mode, so the cleaning efficiency is low. The gas is used for scouring the surface of the membrane, the formed shearing force is limited, the pollution blockage in the pores cannot be effectively removed, and the introduced gas is easy to cause water body disturbance to resuspend sediments at the bottom of the pool. In addition, the traditional chemical soaking can effectively remove or decompose the fouling and blocking substances from the surface of the membrane, but the method has high cost, needs to stop adding chemical agents and seriously influences the operating efficiency of the system.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model discloses an in situ cleaning device of dull and stereotyped membrane of pottery and normal position processing system thereof can high-efficiently clear away membrane pollutant, convenient to use.
To this end, the technical scheme of the utility model is that:
the utility model provides an in situ cleaning device of dull and stereotyped membrane of pottery, its includes flushing head, flushing pipe, gas-liquid mixer, inlet tube and ozone intake pipe, inlet tube, ozone intake pipe respectively with the inlet tube of gas-liquid mixer, intake-tube connection, the export and the flushing pipe of gas-liquid mixer are connected, the flushing pipe is connected with the water inlet of flushing head, the outside of the delivery port of flushing head is equipped with the sealing member who is used for with dull and stereotyped membrane contact of pottery.
By adopting the technical scheme, ozone and flushing water are mixed through the gas-liquid mixer and are used for flushing the ceramic flat membrane, the ozone in the flushing water containing the ozone after mixing is a strong oxidant, the contact part of the flushing water and the ceramic flat membrane forms local high-concentration ozone, so that the ozone and pollutants on the surface of the ceramic membrane are in full contact reaction, the ozone can efficiently decompose impurities in a water body, particularly organic pollutants accumulated on the surface of the ceramic flat membrane and restore the permeability of the membrane, and particularly high-molecular degradation-resistant organic matters adhered to the ceramic membrane can be efficiently removed through the ozone. The pollutants degraded by ozone form a series of chemically stable small molecules, one part of which can enter the water producing side through the membrane pores, and the other part of which flows out of the flushing head along with the flushing water when the pressure is high. New ozone is continuously replenished along with the flushing water flow, and the higher ozone concentration of the head of the flushing device is maintained. The cleaning process can be synchronized with the filtering process without long-time shutdown.
As a further improvement, the in-situ cleaning device of the ceramic flat membrane comprises an ozone generator, and the ozone generator is connected with an ozone inlet pipe.
As a further improvement of the utility model, the in-situ cleaning device of the ceramic flat membrane comprises at least two flushing heads, and the outlet of the gas-liquid mixer is connected with the at least two flushing heads through the flushing pipe respectively.
As a further improvement of the present invention, the sealing member protrudes from a surface of the flushing head on the side of the water outlet. By adopting the technical scheme, a gap is formed between the water outlet of the flushing head and the ceramic flat membrane, so that flushing water can be better contacted with the surface of the ceramic flat membrane. Further preferably, the sealing member is a gasket.
As a further improvement of the utility model, the in-situ cleaning device of the ceramic flat membrane comprises a moving assembly, and the washing head is connected with the moving assembly. By adopting the technical scheme, the ceramic flat membrane can freely reciprocate on the surface of the ceramic flat membrane under the driving of the moving assembly.
As a further improvement of the utility model, the moving component comprises a moving driving mechanism and a transmission mechanism, and the moving driving mechanism is connected with the flushing head through the transmission mechanism. Further preferably, the transmission mechanism can be a connecting rod, a chain and a pulley rope; the driving mechanism is a motor.
As a further improvement of the utility model, the flushing pipe is a telescopic pipe. By adopting the technical scheme, the flushing head can be driven to stretch and retract in the moving process according to the moving assembly, the application range is not limited, and the operation is more convenient.
As a further improvement of the utility model, the flushing head comprises a circulation water outlet, and the circulation water outlet is connected with the water inlet of the flushing head through a circulation pipeline. By adopting the technical scheme, the internal circulation of flushing water is realized, the utilization rate of ozone is further improved, and the ozone consumption is saved.
As a further improvement of the utility model, the circulation water outlet is located at the side close to the water inlet of the flushing head.
As a further improvement of the utility model, the circulating water outlet is connected with the water inlet of the flushing head through a circulating pump and a valve. Further preferably, the valve is a one-way valve.
As a further improvement of the utility model, the material of the flushing head is titanium material or PTFE. By adopting the technical scheme, the flushing head has oxidation resistance and long service life.
The utility model also discloses an in situ treatment system of dull and stereotyped membrane of pottery, it includes filtering water basin, the dull and stereotyped membrane group of pottery, produces the pond, as above arbitrary one dull and stereotyped membrane group's of pottery normal position belt cleaning device, the dull and stereotyped membrane group submergence of pottery is in filtering water basin, the flushing head pastes the surface at the dull and stereotyped membrane group of pottery, dull and stereotyped membrane group of pottery links to each other with the entry of producing the water pump, the export of producing the water pump links to each other with the pond of producing, produce the pond through the washing water pump with the normal position belt cleaning device's of dull and stereotyped membrane of pottery advance water piping connection. The filter tank is a sealed tank, and system inlet water is connected with the filter tank through a water inlet pipeline.
Preferably, a pressure sensor is arranged on a connecting pipeline between the ceramic flat membrane module and the water production pump, and a flowmeter is arranged on a pipeline between the water production pump and the water production pool.
Compared with the prior art, the beneficial effects of the utility model are that:
by adopting the technical scheme of the utility model, ozone with strong oxidizing property is conveyed to the surface of the polluted ceramic membrane through washing water, and pollutants are rapidly oxidized and decomposed and desorbed with the ceramic membrane; meanwhile, partial washing water is sucked by negative pressure formed in the ceramic membrane during filtration, and dissolved ozone is in contact reaction with pollutants in the membrane hole, so that the removal of the pollution blockage in the membrane hole is realized; the permeability of the ceramic membrane is recovered, so that the ceramic membrane pollutants are efficiently removed, the operation time of the ceramic membrane is prolonged, the ozone consumption can be controlled, and the environmental pollution is reduced; the cleaning process and the filtering process can be carried out synchronously without long-time halt; convenient operation and low cost.
Drawings
Fig. 1 is a schematic structural diagram of an in-situ cleaning device for a ceramic flat membrane according to embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of an in-situ cleaning apparatus for a ceramic flat membrane according to embodiment 2 of the present invention.
Fig. 3 is a schematic structural diagram of an in-situ treatment system for a ceramic flat membrane according to embodiment 3 of the present invention.
The reference numerals include:
1-ceramic flat membrane, 2-surface pollutant, 3-flushing head, 4-flushing pipe, 5-ozone, 6-sealing ring, 7-flushing water, 8-discharged flushing water, 9-circulating water pump and 10-circulating pipeline;
11-water inlet, 12-filtering water tank, 13-ceramic membrane group, 14-water producing pump, 15-water producing tank, 16-flushing water pump, 17-gas-water mixer, 18-pressure sensor and 19-flow sensor.
Detailed Description
Preferred embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
Example 1
As shown in fig. 1, an in-situ cleaning device for a ceramic flat membrane comprises a flushing head 3, a flushing pipe 4, a gas-liquid mixer, a water inlet pipe and an ozone inlet pipe (the gas-liquid mixer, the water inlet pipe and the ozone inlet pipe are not shown in fig. 1), wherein the water inlet pipe and the ozone inlet pipe are respectively connected with the water inlet pipe and the air inlet pipe of the gas-liquid mixer, the outlet of the gas-liquid mixer is connected with the flushing pipe 4, the flushing pipe 4 is connected with the water inlet of the flushing head 3, and a sealing ring 6 which is used for being in direct contact with the membrane surface of the ceramic flat membrane 1 is arranged on the outer side of the water outlet of the flushing head 3. The ozone inlet pipe is connected with an ozone generator, and provides ozone 5 to be mixed with washing water 7 in a gas-liquid mixer.
Furthermore, the sealing ring 6 protrudes from the surface of the flushing head 3 on the side of the water outlet, so that a gap is formed between the water outlet of the flushing head 3 and the ceramic flat membrane 1, and the flushing water 7 can be more fully contacted with the surface of the flat membrane.
The flushing head 3 is connected with the moving assembly and is driven by the moving assembly to freely reciprocate on the surface of the membrane of the ceramic flat membrane 1. The moving assembly comprises a moving driving mechanism and a transmission mechanism, and the moving driving mechanism is connected with the flushing head 3 through the transmission mechanism. Further preferably, the transmission mechanism can be a connecting rod, a chain and a pulley rope; the driving mechanism is a motor.
Further, the flushing pipe 4 is a telescopic pipe.
The washing head 3 is made of oxidation-resistant materials such as titanium materials or PTFE; the sealing ring 6 is made of an anti-oxidation composite elastic material.
In the embodiment, the ceramic flat membrane 1 is immersed in a water body to be filtered, the ceramic flat membrane 1 is mainly made of silicon carbide or alumina, and the pore diameter is 0.1-0.2 microns. During the filtration operation of the ceramic flat membrane 1, impurities in water are continuously intercepted to form surface pollutants 2, the operation parameter change is abnormal, such as transmembrane pressure difference is obviously increased, and a flushing device is opened. Washing water 7 in which ozone 5 is dissolved is continuously supplied from a washing pipe 4 to a washing head 3, the washing head 3 has a packing 6 around it and is in direct contact with the ceramic flat membrane 1, and when the pressure of the water is high, the discharged washing water 8 is uniformly discharged through a gap between the packing 6 and the ceramic flat membrane 1. The washing head 3 can slowly and uniformly move on the surface of the ceramic flat membrane 1 at a speed of 5mm/s from top to bottom in a left-to-right direction under the action of the external moving component. The flushing pipe 4 is flexible and can keep consistent with the operation of the flushing head 3.
In the flushing head 3, the surface pollutants 2 and ozone 5 with strong oxidizing property rapidly react and are decomposed into small molecules and mineral substances which are dissolved in the flushing water 7, and a part of the surface pollutants is discharged along with the flushing water 7 and enters the water body to be filtered. Unreacted ozone 5 and substances with the size smaller than the membrane pores enter the ceramic flat membrane 1 under the negative pressure of the ceramic membrane filtration, and the ozone 5 continues to oxidize and degrade pollutants in the membrane.
By adopting the technical scheme, the cleaning process and the filtering process can be synchronously carried out, and long-time shutdown is not needed. During filtration, partial washing water 7 is sucked by negative pressure formed in the ceramic membrane, and the dissolved ozone 5 is in contact reaction with pollutants in the membrane hole, so that the removal of the pollution and blockage in the membrane hole is realized. The method is adopted to form the local ozone 5 with higher concentration, so that the ceramic membrane pollutants can be efficiently removed, the operation time of the ceramic membrane is prolonged, and the using amount of the ozone 5 is effectively controlled.
Example 2
As shown in fig. 2, the difference of this embodiment is that the flushing head 3 has a circulating water outlet on one side of the outlet, which is connected to the circulating pipeline 10 through the circulating water pump 9, and the flushing water 7 and the unreacted ozone 5 are recycled, based on the embodiment 1.
Example 3
As shown in fig. 3, an in-situ treatment system for ceramic flat membrane comprises a filtration water tank 12, a ceramic membrane group 13, a water production tank 15, and the in-situ cleaning apparatus for ceramic flat membrane described in embodiment 1, wherein the filtration water tank 12 is a sealed water tank, and a system inlet water 11 is connected with the filtration water tank 12 through a water inlet pipeline. The ceramic membrane group 13 is immersed in the filter water tank 12, the ceramic membrane group 13 is a silicon carbide material flat ceramic membrane, and each group comprises 40 pieces. The washing head 3 of the in-situ cleaning device for the ceramic flat membrane is attached to the surface of the ceramic membrane group 13, the ceramic membrane group 13 is connected with an inlet of a water producing pump 14, an outlet of the water producing pump 14 is connected with a water producing pool 15, the bottom of the water producing pool 15 is connected with an inlet of a washing water pump 16, and an outlet of the washing water pump 16 is connected with a water inlet pipe of the in-situ cleaning device for the ceramic flat membrane. A pressure sensor 18 is arranged on a connecting pipeline between the ceramic membrane group 13 and the water producing pump 14, and a flow meter is arranged on a pipeline between the water producing pump 14 and the water producing pool 15.
When the water producing system is used specifically, inlet water 11 enters the filtering water tank 12 to form water to be filtered, the ceramic membrane group 13 is immersed, the water producing pump 14 operates to convey water body penetrating through the ceramic membrane, namely produced water, to the water producing tank 15, the system operates in a constant flow mode, the flow sensor 19 monitors the operation, and the membrane flux is kept at 75 LMH. The flushing water 7 adopts system produced water, firstly enters a gas-water mixer 17 through a flushing water pump 16, is fully mixed with ozone 5 gas introduced into the gas-water mixer 17, and then enters a flushing device of a ceramic membrane group, wherein the gas-liquid ratio is about 1: 10. The operating pressure of the ceramic membrane module is monitored by means of a pressure sensor 18, the transmembrane pressure TMP is calculated and the flushing is carried out when the TMP rises to a threshold value of about 0.3bar to 0.5 bar.
The above-mentioned embodiments are the preferred embodiments of the present invention, and the scope of the present invention is not limited to the above-mentioned embodiments, and the scope of the present invention includes and is not limited to the above-mentioned embodiments, and all equivalent changes made according to the shape and structure of the present invention are within the protection scope of the present invention.
Claims (10)
1. The utility model provides an in situ cleaning device of dull and stereotyped membrane of pottery which characterized in that: the washing device comprises a washing head, a washing pipe, a gas-liquid mixer, a water inlet pipe and an ozone inlet pipe, wherein the water inlet pipe and the ozone inlet pipe are respectively connected with the water inlet pipe and the air inlet pipe of the gas-liquid mixer, the outlet of the gas-liquid mixer is connected with the washing pipe, the washing pipe is connected with the water inlet of the washing head, and a sealing member used for being in contact with a ceramic flat membrane is arranged on the outer side of the water outlet of the washing head.
2. The in-situ cleaning device for the ceramic flat membrane according to claim 1, wherein: the ozone generator is connected with an ozone inlet pipe.
3. The in-situ cleaning device for the ceramic flat membrane according to claim 2, wherein: the sealing component protrudes out of the surface of one side of the water outlet of the flushing head.
4. The in-situ cleaning device for the ceramic flat membrane according to claim 2, wherein: it includes the removal subassembly, the washing head is connected with the removal subassembly.
5. The in-situ cleaning device for the ceramic flat membrane according to claim 4, wherein: the moving assembly comprises a moving driving mechanism and a transmission mechanism, and the moving driving mechanism is connected with the flushing head through the transmission mechanism.
6. The in-situ cleaning device for the ceramic flat membrane according to claim 4, wherein: the flushing pipe is a telescopic pipe.
7. The in-situ cleaning device for the ceramic flat membrane according to claim 1, wherein: the flushing head comprises a circulating water outlet, and the circulating water outlet is connected with a water inlet of the flushing head through a circulating pipeline.
8. The in-situ cleaning device for the ceramic flat membrane according to claim 7, wherein: the circulating water outlet is connected with the water inlet of the flushing head through a circulating pump.
9. The in-situ cleaning device for the ceramic flat membrane according to any one of claims 1 to 8, characterized in that: the flushing head is made of titanium or PTFE.
10. The in-situ treatment system of the ceramic flat membrane is characterized in that: the in-situ cleaning device for the ceramic flat membrane comprises a filtering water tank, a ceramic flat membrane group, a water production tank and the in-situ cleaning device for the ceramic flat membrane as claimed in any one of claims 1 to 9, wherein the ceramic flat membrane group is immersed in the filtering water tank, the flushing head is attached to the surface of the ceramic flat membrane group, the ceramic flat membrane group is connected with an inlet of a water production pump, an outlet of the water production pump is connected with the water production tank, and the water production tank is connected with the water inlet pipe of the in-situ cleaning device for the ceramic flat membrane through a flushing water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220639105.1U CN217367898U (en) | 2022-03-23 | 2022-03-23 | In-situ cleaning device for ceramic flat sheet membrane and in-situ treatment system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220639105.1U CN217367898U (en) | 2022-03-23 | 2022-03-23 | In-situ cleaning device for ceramic flat sheet membrane and in-situ treatment system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217367898U true CN217367898U (en) | 2022-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220639105.1U Active CN217367898U (en) | 2022-03-23 | 2022-03-23 | In-situ cleaning device for ceramic flat sheet membrane and in-situ treatment system thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN217367898U (en) |
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- 2022-03-23 CN CN202220639105.1U patent/CN217367898U/en active Active
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