CN113509844A - Reinforced scrubbing system for vertical flat ceramic membrane and application of reinforced scrubbing system - Google Patents
Reinforced scrubbing system for vertical flat ceramic membrane and application of reinforced scrubbing system Download PDFInfo
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- CN113509844A CN113509844A CN202110567259.4A CN202110567259A CN113509844A CN 113509844 A CN113509844 A CN 113509844A CN 202110567259 A CN202110567259 A CN 202110567259A CN 113509844 A CN113509844 A CN 113509844A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/18—Use of gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/20—By influencing the flow
- B01D2321/2033—By influencing the flow dynamically
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
- B01D65/04—Membrane cleaning or sterilisation ; Membrane regeneration with movable bodies, e.g. foam balls
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Abstract
The invention provides a reinforced scrubbing system for a vertical flat ceramic membrane and application thereof. The mud residue groove and the baffle that arrange on diaphragm upper portion set up strengthen the air and scrub back row mud residue, can ensure simultaneously that the washing in-process is scrubbed the granule and can not flee out. The invention solves the problems that the traditional air scrubbing has quite limited control effect on membrane pollution and can cause rapid blockage of the ceramic membrane when dirt and organisms are attached and grow seriously because the surface of the flat ceramic membrane is flat and smooth, and has the advantages of high implementability, high technical economy, high automation degree and the like.
Description
Technical Field
The invention relates to the technical field of membranes, in particular to a membrane pollution cleaning system suitable for a flat ceramic membrane and application thereof.
Background
The flat ceramic membrane has wide application due to long service life, large flux, corrosion resistance and friction resistance. With the improvement of the technology and the reduction of the cost, the flat ceramic membrane can be applied more.
However, the surface of the flat ceramic membrane is flat and relatively smooth, the control effect of the traditional air scrubbing on membrane pollution is quite limited, and the ceramic membrane can be rapidly blocked when dirt and organisms are attached and grown seriously.
Although frequent chemical cleaning can alleviate membrane pollution, the use efficiency of the flat ceramic membrane is affected by the consumption of chemicals, water and time.
At present, no physical scrubbing measure or solution aiming at the flat ceramic membrane is available in practice.
Disclosure of Invention
The invention overcomes the problems that the traditional air scrubbing has quite limited control effect on membrane pollution and can quickly block a ceramic membrane when dirt and organisms are attached and grow seriously due to flat and smooth surface of a flat ceramic membrane, and provides a vertical flat ceramic membrane reinforced air scrubbing system and application thereof, so that the aims of enhancing the scrubbing effect of the flat ceramic membrane, cleaning the flat ceramic membrane and improving the cleaning feasibility and the technical economy are fulfilled.
A reinforced scrubbing system for vertical flat ceramic membranes mainly comprises: the device comprises a membrane pool, a membrane frame, a flat ceramic membrane, a slag discharge groove, a baffle, scrubbing particles, a water and gas distribution box and a particle tray; the film frames are vertically arranged in parallel, a water and gas distribution box, a scrubbing particle and a particle tray are arranged from bottom to top, the flat ceramic diaphragms and the slag discharge grooves are arranged in parallel, and the whole film frame is immersed in the film pool; the flat ceramic diaphragm is vertically and horizontally arranged or vertically arranged, and baffles are arranged around the flat ceramic diaphragm; the scrubbing particles may tumble between the flat ceramic membranes as the air is flushed.
Furthermore, the baffle plates are arranged on the periphery of the flat ceramic membrane, so that scrubbing particles are prevented from escaping out of the flat ceramic membrane during air impact. The upper edge of the baffle extends to 50-200mm of the upper part of the slag discharging groove, and the lower edge extends to the bottom of the particle tray. The baffle gap is not more than 1 mm.
Furthermore, a slag discharging groove at the upper part of the flat ceramic diaphragm is supported on the diaphragm frame, the slag discharging groove is movably connected with a discharge port on the diaphragm tank, and the movable connection can be in a flange type or an up-and-down pressing mode.
Furthermore, the particle tray is arranged at the lower part of the flat ceramic membrane, the periphery of the particle tray is provided with baffle plates, the bottom of the particle tray is provided with two layers of meshes with different thicknesses, the mesh aperture of the upper layer of mesh is smaller than the diameter of the scrubbing particles, and the lower layer of mesh is a structural layer and is used for bearing the weight of the particles; the mesh falls on a cross beam connected with the film frame.
Furthermore, the lower part of the particle tray is provided with a water and gas distribution box which comprises 2 sets of independent water and gas distribution pipeline systems, the gas pipe is higher than the water pipe, and the water and gas distribution pipeline is erected on the cross beam of the membrane frame and can also be fixed at the bottom of the membrane pool. Compressed air can be introduced to realize air blast, and pressure water can also be introduced to carry out water blast so as to realize uniform air blast or water blast.
Further, the diameter of the scrubbing particles can be 0.5-3mm, the material is acid-resistant, alkali-resistant and corrosion-resistant, and has enough strength, and the specific gravity of the scrubbing particles is greater than that of water. The scrubbing particles can be ceramic particles, sand particles, rubber balls, plastic balls with burrs, and the like.
The invention also provides an application of the reinforced scrubbing system for the vertical flat ceramic membrane, which comprises the following steps:
1) the membrane frame is integrally placed in a pool or a steel structure shell, mud is discharged from the bottom, and the water level falls to the upper part of the flat ceramic membrane;
2) air scrubbing is carried out through an air pipe and an air and water distribution box, scrubbing particles at the bottom float up, the scrubbing particles roll among the flat ceramic membranes to form scrubbing, and the scrubbing time is about 2-8 min; finishing air flushing;
3) the pressure water washing is carried out through the water pipe and the air distribution and water distribution box, the sludge is driven by the water flow to move upwards, and the washing wastewater is discharged from the upper slag discharge groove.
The air impact strength, the water impact strength or the quantity of the scrubbing particles can be adjusted according to actual requirements in the cleaning process.
Further preferably, the reinforced scrubbing system for the flat ceramic membrane can be provided with an automatic control system, so that the periodic operation of the reinforced scrubbing system is realized.
Further preferably, the reinforced scrubbing system for the vertical flat ceramic membrane can be provided with an automatic control system, and the reinforced scrubbing system is started according to the effluent quality.
The reinforced scrubbing system for the vertical flat ceramic membrane provided by the invention has the following beneficial effects:
the reinforced scrubbing system for the vertical flat ceramic membrane can adopt the modes of air washing and water washing at the same time, and the air washing drives scrubbing particles to roll, so that the scrubbing effect on the flat ceramic membrane can be enhanced, and the problems of pollution on the surface of the flat ceramic membrane and difficulty in cleaning the surface of the flat ceramic membrane are solved. The slag discharge groove and the baffle plate arranged on the upper part of the system diaphragm ensure the discharge of sludge and the retention of scrubbing particles in the operation process of the scrubbing system. The reinforced scrubbing system for the flat ceramic membrane provided by the invention has the advantages of high implementability, high technical economy, high intelligent degree and the like.
Drawings
FIG. 1 is a schematic view of the air blast operation of the enhanced scrubbing system of the vertical membrane rack of the present invention.
FIG. 2 is a schematic diagram of the standby state of the enhanced scrubbing system of the vertical membrane rack of the present invention.
Fig. 3 is a schematic detail view of a cross section of a particle tray of the present invention.
Fig. 4 is a schematic detail view of the upper mesh sheet of the particle tray of the present invention.
FIG. 5 is a schematic detail view of the lower mesh of the particle tray of the present invention.
Fig. 6 is a schematic view of the air-blast operation of the enhanced scrubbing system with vertically-arranged and horizontally-arranged (double-layer) membrane frames.
Fig. 7 is a standby schematic view of the enhanced scrubbing system of the vertical transverse (double-layer) membrane frame of the present invention.
In the figure:
the device comprises a membrane pool 1, a ceramic membrane frame 2, a flat ceramic membrane 3, a slag discharge groove 4, a baffle 5 and scrubbing particles 6;
a water and air distribution box 7, an air pipe 71, a water pipe 72 and air 73;
particle tray 8, upper layer mesh 81, lower layer mesh 82.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples. Advantages and features of the present invention will become apparent from the following description and claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
Example 1
The embodiment adopts a reinforced scrubbing system with a vertical membrane rack. The brushing system comprises: the device comprises a membrane pool 1, a membrane frame 2, a flat ceramic membrane 3, a slag discharge groove 4, a baffle 5, scrubbing particles 6, a water and gas distribution box 7 and a particle tray 8; the membrane frames 2 are vertically arranged in parallel, a water and gas distribution box 7, scrubbing particles 6 and particle trays 8 are arranged from bottom to top, the flat ceramic membranes 3 and the slag discharge grooves 4 are arranged in parallel, and the whole membrane frame 2 is immersed in the membrane tank 1; the flat ceramic diaphragm 3 is vertically arranged, and baffles 5 are arranged around the flat ceramic diaphragm; the scrubbing particles 6 may tumble between the flat ceramic membranes 3 as the air is flushed. The standby schematic diagram of the reinforced scrubbing system of the vertical membrane rack adopted in the embodiment is shown in figure 2, and the air blast operation schematic diagram is shown in figure 1.
The lower part of the particle tray 8 is provided with a water and gas distribution box 7 which comprises 2 sets of independent water and gas distribution pipeline systems, a gas pipe 71 is higher than a water pipe 72, and the water and gas distribution pipeline is erected on a cross beam of the membrane frame 2 and can also be fixed at the bottom of the membrane tank 1. The scrubbing particles 6 adopt ceramic particles, sand particles or rubber balls, and the particle size is 1-3 mm.
When cleaning, the whole membrane frame is placed in a pool or a steel structure shell, mud is discharged from the bottom, and the water level is lowered to 50mm above the flat ceramic membrane 3; air 73 scrubbing is carried out through the air pipe 71 and the air and water distribution box 7, the scrubbing particles 6 at the bottom float up, the scrubbing particles 6 roll among the flat ceramic membranes 3 to form scrubbing, and the scrubbing time is about 2-8 min; finishing air flushing; the pressure water washing is carried out through the water pipe 72 and the air distribution and water distribution box 7, the sludge is driven by the water flow to move upwards, and the washing waste water is discharged from the upper slag discharge groove 4. The air impact strength, the water impact strength or the quantity of the scrubbing particles can be adjusted according to actual requirements in the cleaning process.
In actual operation, an automatic control system can be arranged in the membrane tank 1 according to actual conditions, so that the periodic operation of the reinforced scrubbing system is realized.
In actual operation, an automatic control system can be arranged in the membrane tank 1 according to actual conditions, and the reinforced scrubbing system is started according to the quality of the effluent water.
Example 2
The embodiment of the reinforced scrubbing system adopting the vertical and horizontal (double-layer) membrane frame is the same as that of the embodiment 1. The standby schematic diagram of the reinforced scrubbing system of the vertically-transverse (double-layer) membrane frame is shown in figure 7, and the air blast operation schematic diagram is shown in figure 6.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (8)
1. An enhanced scrubbing system for vertical flat ceramic membranes, comprising: the device comprises a membrane pool (1), a membrane frame (2), a flat ceramic membrane (3), a slag discharge groove (4), a baffle (5), scrubbing particles (6), a water and gas distribution box (7) and a particle tray (8); the membrane frames (2) are vertically arranged in parallel, a water and gas distribution box (7), scrubbing particles (6) and a particle tray (8) are arranged from bottom to top, the flat ceramic membranes (3) and the slag discharge grooves (4) are arranged in parallel, and the whole membrane frame (2) is immersed in the membrane pool (1); the flat ceramic diaphragm (3) is vertically and horizontally arranged or vertically arranged, and baffles (5) are arranged on the periphery; the scrubbing particles (6) can tumble between the flat ceramic membranes (3) during air scouring.
2. The enhanced scrubbing system for vertical plate ceramic membranes of claim 1, wherein: the periphery of the flat ceramic membrane (3) is provided with a baffle (5) which blocks the scrubbing particles (6) from escaping out of the flat ceramic membrane (3) during air impact; the upper edge of the baffle (5) extends to 50-200mm of the upper part of the slag discharging groove (4), and the lower edge extends to the bottom of the particle tray (8); the gap of the baffle (5) is not more than 1 mm.
3. The enhanced scrubbing system for vertical plate ceramic membranes of claim 1, wherein: the slag discharging groove (4) at the upper part of the flat ceramic diaphragm (3) is supported on the diaphragm frame (2), the slag discharging groove (4) is movably connected with a discharging port on the diaphragm tank (1), and the movable connection adopts a flange type or an up-and-down pressing mode.
4. The enhanced scrubbing system for vertical plate ceramic membranes of claim 1, wherein: the particle tray (8) is arranged at the lower part of the flat ceramic membrane (3), baffles are arranged at the periphery of the particle tray, the bottom of the particle tray is provided with two layers of meshes with different thicknesses, the mesh diameter of the upper layer of mesh (81) is smaller than the diameter of scrubbing particles, and the lower layer of mesh (82) is a structural layer; the net sheets are arranged on a cross beam connected with the film frame (2).
5. The enhanced scrubbing system for vertical plate ceramic membranes of claim 1, wherein: the lower part of the particle tray (8) is provided with a water and gas distribution box (7) which comprises 2 sets of independent water and gas distribution pipeline systems, a gas pipe (71) is higher than a water pipe (72), and the water and gas distribution pipeline is erected on a cross beam of the membrane frame (2) or fixed at the bottom of the membrane tank (1).
6. The enhanced scouring system for vertical flat ceramic membranes according to claim 1, wherein the scouring particles (6) have a diameter of 0.5-3mm, are acid-resistant, alkali-resistant, corrosion-resistant, have sufficient strength, and have a specific gravity greater than that of water.
7. The enhanced scrubbing system for vertical slab ceramic membranes according to claim 1, wherein the scrubbing particles (6) are ceramic particles, sand particles, rubber balls, or plastic balls with burrs.
8. The use of the enhanced scrubbing system for vertical plate ceramic membranes of claim 1, comprising the steps of:
1) the whole membrane frame is placed in a pool or a steel structure shell, mud is discharged from the bottom, and the water level falls to the upper part of the flat ceramic membrane (3);
2) air (73) scrubbing is carried out through an air pipe (71) and an air and water distribution box (7), scrubbing particles (6) at the bottom float up, the scrubbing particles (6) roll among the flat ceramic membranes (3) to form scrubbing, and the scrubbing time is about 2-8 min; finishing air flushing;
3) the pressure water washing is carried out through the water pipe (72) and the air distribution and water distribution box (7), the sludge is driven by the water flow to move upwards, and the washing wastewater is discharged from the upper slag discharge groove (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110567259.4A CN113509844A (en) | 2021-05-24 | 2021-05-24 | Reinforced scrubbing system for vertical flat ceramic membrane and application of reinforced scrubbing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110567259.4A CN113509844A (en) | 2021-05-24 | 2021-05-24 | Reinforced scrubbing system for vertical flat ceramic membrane and application of reinforced scrubbing system |
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| Publication Number | Publication Date |
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| CN113509844A true CN113509844A (en) | 2021-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110567259.4A Pending CN113509844A (en) | 2021-05-24 | 2021-05-24 | Reinforced scrubbing system for vertical flat ceramic membrane and application of reinforced scrubbing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114272760A (en) * | 2021-12-10 | 2022-04-05 | 上海市政工程设计研究总院（集团）有限公司 | Flat membrane scrubbing device |
| CN114272759A (en) * | 2021-11-25 | 2022-04-05 | 上海市政工程设计研究总院（集团）有限公司 | Upper drainage immersed membrane device and flushing control method thereof |
-
2021
- 2021-05-24 CN CN202110567259.4A patent/CN113509844A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114272759A (en) * | 2021-11-25 | 2022-04-05 | 上海市政工程设计研究总院（集团）有限公司 | Upper drainage immersed membrane device and flushing control method thereof |
| CN114272760A (en) * | 2021-12-10 | 2022-04-05 | 上海市政工程设计研究总院（集团）有限公司 | Flat membrane scrubbing device |
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