CN112473377A - Tubular micro-filtration circulating water tank - Google Patents
Tubular micro-filtration circulating water tank Download PDFInfo
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- CN112473377A CN112473377A CN202011503578.0A CN202011503578A CN112473377A CN 112473377 A CN112473377 A CN 112473377A CN 202011503578 A CN202011503578 A CN 202011503578A CN 112473377 A CN112473377 A CN 112473377A
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- water
- circulating water
- water tank
- tank
- raw water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/147—Microfiltration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/18—Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/20—Accessories; Auxiliary operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/22—Controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/06—Tubular membrane modules
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
Abstract
The invention discloses a tubular micro-filtration circulating water tank which comprises a tank body, wherein a pretreatment water tank is arranged on one side of the tank body, a through hole is formed in one side of the upper end of the pretreatment water tank, an overflow water tank is fixedly arranged on the outer wall of one side of the pretreatment water tank, a raw water pipeline is fixedly arranged at the lower end of the overflow water tank, and the raw water pipeline is connected with a circulating water outlet through a first raw water pipeline support frame and a second raw water pipeline support frame. Has the advantages that: can be applicable to the behavior of the big circulating water volume of tubular microfiltration, can not discharge along with dense water after partial raw water mixes with the circulating water to improve the raw water utilization, and the rate has reduced the concentration of effective circulating water, can improve the filter effect of tubular microfiltration, and can form more stable settling zone in the circulating water tank of violent disturbance, improve the concentration of discharging of dense water, reduce dense water discharge, reduce the blowdown water yield, improve the operating efficiency, reduce the working costs.
Description
Technical Field
The invention relates to the field of water treatment, in particular to a tubular micro-filtration circulating water tank.
Background
The tubular membrane microfiltration technology replaces the traditional processes of dosing, flocculation and sedimentation, and the membrane filtration method is used for treating high-concentration industrial wastewater, so that the tubular membrane microfiltration technology is an innovation in the field of water treatment, and has the advantages of small floor area, easy installation of complete equipment, low management cost, small equipment volume, flexible assembly and movement, convenient operation and the like compared with the conventional water treatment. However, due to the structural characteristics of the tubular microfiltration membrane, the general tubular microfiltration needs large circulating water amount, and the long-time continuous operation is realized by completing the self-cleaning by the large circulating water amount. The main process flow associated with the present invention in a tubular microfiltration system is shown in figure 1.
The conventional circulating water is subjected to tubular micro-filtration hydraulic circulation by a circulating water pump at the outlet of the circulating water tank through a circulating water tank (also referred to as a concentrated water tank, a circulating water tank and a circulating water tank). The circulating water tank has: the three main functions of the inlet of the pre-treated clear water, the reflux of the tubular microfiltration concentrated water and the discharge of the high concentrated water are realized. The hydraulic characteristics of the circulating water tank are as follows: 1. the tank body is small, the water return amount is extremely large, taking 1 cubic meter per hour of water treatment capacity as an example, the volume of the circulating water tank is 1.5 cubic meters, the circulating water amount is 10-40 cubic meters per hour, and the inside of the water tank is in a strongly stirred turbulent flow state. 2. The amount of clean water is small, the raw water which enters the water tank for pretreatment and is 1 cubic meter per hour can be quickly mixed into the circulating water of the water tank, and part of the clean water can be directly discharged along with the high-concentration water without tubular microfiltration. 3. The high concentration water discharge port does not have a precipitation process due to intensive mixing in the water tank, so the discharged water is homogeneous water in the water tank.
However, most of the raw water pretreated by the existing tubular microfiltration circulating water tank enters the tubular microfiltration membrane for filtration treatment at first, can be mixed in concentrated water for direct discharge, and cannot form a relatively static settling zone in a water tank, so that precipitated particles in the settling zone cannot be discharged after concentration, the phenomenon of homogeneous discharge cannot be changed, the sewage concentration is reduced, the sewage discharge amount is improved, and the working efficiency is reduced
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
The invention aims to provide a tubular micro-filtration circulating water tank to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a tubular micro-filtration circulating water tank comprises a tank body, wherein a pretreatment water tank is arranged on one side of the tank body, a through hole is formed in one side of the upper end of the pretreatment water tank, an overflow water tank is fixedly arranged on the outer wall of one side of the pretreatment water tank, a raw water pipeline is fixedly arranged at the lower end of the overflow water tank, the raw water pipeline is connected with a circulating water outlet through a first raw water pipeline support frame and a second raw water pipeline support frame, the first raw water pipeline support frame is fixedly arranged on the outer wall of one side of the pretreatment water tank, the second raw water pipeline support frame is fixedly arranged on one side of the inner wall of the tank body, the circulating water outlet is connected with a circulating water supply interface, the circulating water supply interface is connected with a circulating water return interface through a circulating water pump, one end of the circulating water, one side of the lower end of the box body is connected with a concentrated water drain outlet through a concentrated water discharge pipeline.
Further, concentrated division bar subassembly is including going into long strip-shaped division board of font, L type connecting plate and the fixed bar hole of subassembly, go into long strip-shaped division board of font with L type connecting plate is all fixed on preliminary treatment water tank one side outer wall and box one side inner wall, the fixed bar hole of subassembly is fixed on the L type connecting plate.
Furthermore, the inside of the box body adopts the manufacturing process of carbon steel welding and plastic lining.
Furthermore, the first raw water pipeline support frame and the second raw water pipeline support frame are welded by angle steel and then lined with plastic in the box body.
Compared with the prior art, the invention has the following beneficial effects: the device can be suitable for the working condition of tubular microfiltration of large circulating water volume, can realize that all raw water after pretreatment in earlier stage enters the tubular microfiltration membrane for filtration at first, and can not discharge along with concentrated water after partial raw water is mixed with circulating water, thereby improving the utilization rate of the raw water.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of a tubular micro-filtration circulating water tank according to the background art of the present invention;
FIG. 2 is a front view of a tubular micro-filtration circulating water tank according to an embodiment of the present invention;
FIG. 3 is a top plan view of a tubular microfiltration circulating water tank according to an embodiment of the invention;
fig. 4 is a schematic structural view of a thickening isolation baffle assembly in a tubular microfiltration circulating water tank according to an embodiment of the invention.
Reference numerals:
1. an overflow trough; 2. a first raw water pipeline support frame; 3. a raw water pipeline; 4. a second raw water pipeline bracket; 5. circulating water returns to the water distribution pipe; 6. a circulating water return interface; 7. a circulating water supply interface; 8. a concentrating isolation baffle assembly; 8-1, forming a character-shaped strip-shaped isolation plate; 8-2, an L-shaped connecting plate; 8-3, fixing strip-shaped holes for the components; 9. a concentrated water discharge pipeline; 10. a pretreatment water tank; 11. and (4) a box body.
Detailed Description
The invention is further described with reference to the following drawings and detailed description:
the first embodiment is as follows:
referring to fig. 2-3, a tubular micro-filtration circulating water tank according to an embodiment of the present invention includes a tank 11, a pretreatment water tank 10 is disposed on one side of the tank 11, a through hole is disposed on one side of an upper end of the pretreatment water tank 10, an overflow water tank 1 is fixedly disposed on an outer wall of one side of the pretreatment water tank 10, a raw water pipeline 3 is fixedly disposed at a lower end of the overflow water tank 1, the raw water pipeline 3 is connected to a circulating water outlet through a first raw water pipeline support frame 2 and a second raw water pipeline support frame 4, the first raw water pipeline support frame 2 is fixed on an outer wall of one side of the pretreatment water tank 10, the second raw water pipeline support frame 4 is fixed on one side of an inner wall of the tank 11, the circulating water outlet is connected to a circulating water supply interface 7, the circulating water supply interface 7 is connected to a circulating water return interface 6 through a, the pretreatment water tank 10 one side outer wall and 11 one side inner walls of box are fixed and are equipped with concentrated isolation baffle subassembly 8, 11 lower extreme one side of box is connected with dense water drain outlet through dense water discharge pipeline 9.
Through the scheme of the invention, the pretreated raw water is directly sent to the tubular microfiltration by the circulating water pump through the overflow water tank 1 and the raw water pipeline 3, the supernatant fluid of the raw water pretreatment is not directly gathered into the circulating water tank but is gathered by the overflow water tank 1, a pipeline is arranged in the water tank and is introduced into the water inlet of the circulating water pump, the opened circulating water pump sends water flow to the tubular microfiltration by virtue of negative pressure in the inlet pipeline of the pump, the mixing of the supernatant fluid and the return circulating water can be effectively avoided, so that part of clear water is discharged along with the sewage without circulation, the state of the original circulating water tank with undivided clear water can be changed, the full utilization of the raw water is facilitated, the operating efficiency of the tubular microfiltration is improved, and the bottom of the water tank is designed with the rectangular isolating plate 8-1 which is in the shape by arranging the rectangular isolating plate 8-1 which is in the shape and is, the effect of concentrating part of circulating water in the circulating water tank in a violent mixing state is achieved, the concentration of the circulating water discharged from a sewage discharge port is increased, the sewage discharge amount can be reduced, the utilization rate of system water and the working efficiency of the system are improved, the working condition that the circulating water tank can be suitable for tubular microfiltration of large circulating water amount is realized, all raw water pretreated in the early stage can be filtered by the tubular microfiltration membrane firstly, and part of raw water is not discharged with concentrated water after being mixed with the circulating water, so that the utilization rate of the raw water is improved, the raw water is completely and directly fed into the tubular microfiltration membrane instead of being mixed with the circulating water in the water tank firstly and then fed into the tubular microfiltration membrane, the concentration of effective circulating water is equivalently reduced, the filtering effect of the tubular microfiltration can be improved, a stable settling zone can be formed in the circulating water tank which is violently disturbed, the discharge concentration, reduce the sewage discharge, improve the operation efficiency and reduce the operation cost.
Example two:
referring to fig. 4, for the in-line isolation barrier, the L-shaped connection plate and the module fixing strip hole, the concentration isolation baffle component 8 comprises a rectangular baffle 8-1 shaped like a Chinese character 'gong', an L-shaped connecting plate 8-2 and a component fixing strip hole 8-3, the in-shape long strip-shaped isolation plate 8-1 and the L-shaped connecting plate 8-2 are both fixed on the outer wall of one side of the pretreatment water tank 10 and the inner wall of one side of the tank body 11, the assembly fixing strip-shaped holes 8-3 are fixed on the L-shaped connecting plate 8-2, for the box body, the inside of the box body 11 adopts the manufacturing process of carbon steel welding and plastic lining, for the first raw water pipeline support frame and the second raw water pipeline support frame, the first raw water pipeline support frame 2 and the second raw water pipeline support frame 4 are welded by adopting angle steel and then lined with plastic together with the interior of the box body 11.
According to the scheme of the invention, the rectangular plate in the shape of Chinese character 'yi' is glued and welded and reinforced by PVC plates, two sides of the rectangular plate and vertical faces of L-shaped connecting plates 8-2 at two ends are glued and welded and reinforced, a strip hole 8-3 is formed in the horizontal plane of the L-shaped connecting plate 8-2 in a folded mode and corresponds to a fixed end plate in a box body 11, and when the rectangular plate is fixed, an L-shaped single-head bolt is used for fixing a component, and pretreated raw water is directly sent to tubular microfiltration by a circulating water pump through the arrangement of an overflow water groove 1 and a raw water pipeline 3.
For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.
In practical application, the inner wall structure of the water tank is welded by carbon steel, then plastic lining corrosion prevention is carried out according to a standard plastic lining process, and the thickness of the plastic lining layer can be determined according to the condition of the quality of treated water and is generally not less than 2 mm; the pipeline directly connected with the box body is bounded by a flange or a screw thread, and the pipeline from the flange to the box body is made of carbon steel and is lined with plastic after being welded; the pipeline butted with the flange comprises a circulating water distribution pipe which can adopt a UPVC pipeline or a plastic pipeline meeting the water quality requirement; the fastener in the box adopts the corrosivity according to quality of water to select different kinds of stainless steel, raw water flow: the raw water after the pretreatment water tank 10 is firstly collected by the overflow water tank 1, the water flow is converged into the raw water pipeline 3, the raw water is directly sent to the circulating water outlet 7 through the raw water pipeline 3, wherein the distance from the outlet of the raw water pipeline 3 to the inlet side of the circulating water outlet 7 can be adjusted according to the height of the overflow baffle of the water tank, but is not suitable to be larger than 10 cm. Raw water overflowing from the pretreatment water tank is sucked by a circulating water pump connected with a circulating water outlet through the process and is sent to a tubular microfiltration device for filtration treatment.
A circulating water flow: circulating water filtered by tubular microfiltration passes through a circulating water return port 6 and returns to a circulating water tank through a circulating water distribution pipe 5, the bottom of the circulating water distribution pipe 5 is provided with a plurality of strip-shaped ports or round ports according to the amount of the returned water, in order to avoid pipeline vibration, the water flow speed passing through the holes can be controlled below 0.5m/s, the circulating water return side is designed at the side far away from the circulating water outlet, a regular flowing process at the bottom can be formed and gradually flows to a circulating water supply interface 7, the circulating water supply interface 7 is externally connected with a circulating water pump, the water pump is used for providing water pressure and water amount required by tubular microfiltration work, and a certain amount of produced water is produced by the filtering action of a tubular microfiltration membrane, generally speaking, according to different treated water qualities, the water amount ratio of the circulating water: 1-40: 1, the concentrated circulating water after water production returns to the circulating water tank through a circulating water return port 6 to complete one circulation.
Concentrated water discharge flow: the concentration process of impurities in the circulating water is as follows, in the flowing process of the circulating water in the box body, the water flow direction is ' → ', impurities in the water can continuously collide with the protruded top end of the baffle in the shape of Chinese character ' yi ' on the concentration isolation baffle assembly 8 and flow into the settling zone at the lower part of the baffle assembly 8 along the wall surface of the baffle, the impurities in the settling zone can not be statically settled at the bottom of the baffle in the shape of Chinese character ' yi ', but the disturbance degree is much weaker than the water flow at the upper layer of the isolation baffle, because the gap between the baffle assemblies is only about 2cm, most of the impurities can be limited in the settling zone by the angle-shaped ground of the ' Chinese character ' yi ' plate, only a small amount of the impurities can return to the upper layer from the gap, the concentration function is realized, the concentrated water can be discharged to a settling tank in the tubular microfiltration system device for further treatment through a concentrated water, the water supply device is characterized in that the water supply device is deviated from the center to a circulating water supply port, the slow water flow direction is arranged at the bottom of the partition board, the discharge of concentrated water impurities is facilitated, pretreated raw water is directly conveyed to the tubular microfiltration through a circulating water pump by arranging an overflow water tank 1 and a raw water pipeline 3, the supernatant of the raw water pretreatment is not directly gathered into the circulating water tank but is gathered by the overflow water tank 1, a pipeline is arranged in the water tank and is introduced into a water inlet of the circulating water pump, the opened circulating water pump conveys water into the tubular microfiltration by virtue of negative pressure in a pump inlet pipeline, the mixing of the supernatant and return circulating water can be effectively avoided, so that part of clear water is discharged along with sewage without circulation, the state that the original circulating water tank is clean and turbid can not be separated can be changed, the full utilization of the raw water is facilitated, the operating efficiency of the tubular microfiltration is improved, the bottom of the water tank is provided with a rectangular isolating plate 8-1 which is shaped like a Chinese character 'gong' and is arranged to work in cooperation with a circulating water return pipe, so that the effect of concentrating part of circulating water in the circulating water tank in a violent mixing state is achieved, the concentration of the circulating water discharged from a sewage discharge outlet is increased, the sewage discharge amount can be reduced, the utilization rate of system water and the working efficiency of the system are improved, the working condition of tubular microfiltration of large circulating water quantity is realized, all raw water which is pretreated in the early stage can be filtered by the tubular microfiltration membrane firstly, and part of the raw water is not discharged with the concentrated water after being mixed with the circulating water, so that the utilization rate of the raw water is improved, the raw water completely and directly enters the tubular microfiltration instead of being mixed with the circulating water in the water tank firstly and then entering the tubular microfiltration, the concentration of effective circulating water is reduced, the filtering effect of the tubular microfiltration, the concentrated water discharge concentration is improved, the concentrated water discharge amount is reduced, the sewage discharge amount is reduced, the operation efficiency is improved, and the operation cost is reduced.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The tubular micro-filtration circulating water tank is characterized by comprising a tank body (11), wherein a pretreatment water tank (10) is arranged on one side of the tank body (11), a through hole is formed in one side of the upper end of the pretreatment water tank (10), an overflow water tank (1) is fixedly arranged on the outer wall of one side of the pretreatment water tank (10), a raw water pipeline (3) is fixedly arranged at the lower end of the overflow water tank (1), the raw water pipeline (3) is connected with a circulating water outlet through a first raw water pipeline support frame (2) and a second raw water pipeline support frame (4), the first raw water pipeline support frame (2) is fixedly arranged on the outer wall of one side of the pretreatment water tank (10), the second raw water pipeline support frame (4) is fixedly arranged on one side of the inner wall of the tank body (11), the circulating water outlet is connected with a circulating water supply interface (7), the circulating water supply interface (7), circulating water return interface (6) one end is connected with circulating water return water distributor (5), pretreatment water tank (10) one side outer wall and box (11) one side inner wall are fixed and are equipped with concentrated division shield subassembly (8), box (11) lower extreme one side is connected with dense water drainage mouth through dense water discharge pipeline (9).
2. The tubular micro-filtration circulating water tank as claimed in claim 1, wherein the concentration isolation baffle assembly (8) comprises an in-shaped long strip-shaped isolation plate (8-1), an L-shaped connecting plate (8-2) and an assembly fixing strip-shaped hole (8-3), the in-shaped long strip-shaped isolation plate (8-1) and the L-shaped connecting plate (8-2) are fixed on the outer wall of one side of the pretreatment water tank (10) and the inner wall of one side of the tank body (11), and the assembly fixing strip-shaped hole (8-3) is fixed on the L-shaped connecting plate (8-2).
3. The tubular micro-filtration circulating water tank as claimed in claim 1, wherein the tank body (11) is internally manufactured by carbon steel welding and plastic lining.
4. The tubular micro-filtration circulating water tank as claimed in claim 1, wherein the first raw water pipeline support frame (2) and the second raw water pipeline support frame (4) are welded by angle steel and then lined with plastic in the tank body (11).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011503578.0A CN112473377A (en) | 2020-12-18 | 2020-12-18 | Tubular micro-filtration circulating water tank |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011503578.0A CN112473377A (en) | 2020-12-18 | 2020-12-18 | Tubular micro-filtration circulating water tank |
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| CN112473377A true CN112473377A (en) | 2021-03-12 |
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| CN202011503578.0A Pending CN112473377A (en) | 2020-12-18 | 2020-12-18 | Tubular micro-filtration circulating water tank |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0648821U (en) * | 1992-12-08 | 1994-07-05 | 水道機工株式会社 | Permeable membrane filter |
| CN103626259A (en) * | 2012-08-22 | 2014-03-12 | 东丽先端材料研究开发（中国）有限公司 | Immersed type membrane pool and operation method thereof |
| CN204981134U (en) * | 2015-09-29 | 2016-01-20 | 南京丹恒科技有限公司 | Adopt tubular micro -filtration membrane's hydrofluoric acid recycling processed system |
| CN107129010A (en) * | 2017-07-17 | 2017-09-05 | 佛山市银禾企业管理咨询有限公司 | A kind of percolate secondary treatment method |
-
2020
- 2020-12-18 CN CN202011503578.0A patent/CN112473377A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0648821U (en) * | 1992-12-08 | 1994-07-05 | 水道機工株式会社 | Permeable membrane filter |
| CN103626259A (en) * | 2012-08-22 | 2014-03-12 | 东丽先端材料研究开发（中国）有限公司 | Immersed type membrane pool and operation method thereof |
| CN204981134U (en) * | 2015-09-29 | 2016-01-20 | 南京丹恒科技有限公司 | Adopt tubular micro -filtration membrane's hydrofluoric acid recycling processed system |
| CN107129010A (en) * | 2017-07-17 | 2017-09-05 | 佛山市银禾企业管理咨询有限公司 | A kind of percolate secondary treatment method |
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