CN210261235U

CN210261235U - Printing and dyeing wastewater high-flux membrane filtering device

Info

Publication number: CN210261235U
Application number: CN201921111821.7U
Authority: CN
Inventors: 李超
Original assignee: Shaoxing Haikun Water Treatment Technology Co Ltd
Current assignee: Shaoxing Haikun Water Treatment Technology Co Ltd
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-04-07
Anticipated expiration: 2029-07-16

Abstract

The utility model relates to a membrane filtration and sewage treatment technical field especially relate to a printing and dyeing wastewater high flux membrane filter equipment, characterized by: the membrane filtration tube comprises a plurality of cylindrical hollow membranes and arc flat membranes, wherein the hollow membranes are arranged in an annular or elliptical ring shape, and each two adjacent hollow membranes are connected through the flat membranes and are integrally formed into a membrane filtration tube; the filter membrane pipe is fixed on the frame, a filtered water collecting device is arranged on the frame, and the end part of the filter membrane pipe is communicated with the filtered water collecting device; the water filtering and collecting device is communicated with the suction pump through a pipeline. The device has high water yield, high water purification efficiency and difficult blockage, can prevent fiber substances from being wound on the hollow fiber membrane, and is suitable for popularization and application.

Description

Printing and dyeing wastewater high-flux membrane filtering device

Technical Field

The utility model relates to a membrane filtration and sewage treatment technical field especially relate to a printing and dyeing wastewater high flux membrane filter equipment.

Background

The printing and dyeing wastewater has the characteristics of large water quantity, high concentration of organic pollutants, deep chromaticity, large alkalinity, large water quality change, complex components and the like, belongs to one of industrial wastewater difficult to treat, and has relatively less investment in printing and dyeing wastewater treatment in China compared with developed countries. The traditional printing and dyeing wastewater treatment process mainly comprises pretreatment and AO, wherein the AO of a biochemical section comprises hydrolysis-contact oxidation, hydrolysis-activity, SBR and other technologies, the COD of finally discharged water is 150-300 mg/L, and most printing and dyeing wastewater treatment projects are subjected to upgrading transformation or expansion transformation.

In recent years, Membrane Bioreactors (MBRs) have attracted more and more attention and have been widely used in the field of upgrading and modifying printing and dyeing wastewater due to their characteristics of small land occupation, good effluent quality, strong impact load resistance, low sludge yield, and the like. The conventional MBR device is a flat plate type MBR device and a hollow fiber type MBR device, wherein the hollow fiber type MBR has the lowest cost and is widely applied.

However, since the contaminants present in the printing and dyeing wastewater are complex, especially the fibrous substances are easily gathered and entangled between the hollow fiber type MBRs, causing difficulty in cleaning. The flat-plate MBR device basically has no fiber winding problem, and has obvious technical advantages compared with a hollow fiber MBR device, but the application range of the known hard-plate flat-plate membrane is limited due to the defects of low membrane filling density, small water outlet flow channel, easy dirt blockage on the membrane surface, multiple cleaning times and the like.

Beijing Biyu water source membrane science and technology Limited company patent 201610685803.4 discloses a corrugated membrane and its roll-type membrane element and filtration method, which comprises a corrugated membrane and a flat membrane, and is characterized in that a non-woven fabric support layer of the corrugated membrane is connected with the surface of the corrugated membrane, the side surface of the corrugated membrane has a corrugated radius, the lower part of the corrugated membrane is connected with a permeable water flow channel cloth, the lower part of the permeable water flow channel cloth is connected with the flat membrane, the wave trough of the upper corrugation of the corrugated membrane is a water inlet channel, a corrugated cavity enclosed by the permeable water flow channel cloth, the flat membrane structure and the corrugated membrane is a permeable water channel, the permeable water flow channel cloth is connected with a glue line, the glue line is wrapped on the membrane and then connected with a permeable water central collecting pipe, a glue sealing position is wrapped on the permeable water central collecting pipe, and the permeable water flow channel cloth.

Patent 201180024419.5, fibrcast, canada (fabry bras limited), discloses "a device for membrane separation" comprising two sheets of substrate material, at least one sheet of substrate material having one or more recesses extending to an edge of said at least one sheet of substrate material, the two sheets of substrate material being bonded together along their edge except for the one or more recesses extending to said outer edge, whereby said one or more recesses form one or more internal channels between said two sheets of substrate material open to at least one edge, and said two sheets of substrate material being bonded together along one or more lines between said one or more internal channels.

Although the two patents can reduce the accumulation amount of dirt on the membrane surface to a certain extent and improve the unit filling area of the membrane, the water purification efficiency of the membrane component is still not ideal enough, and the utilization of the flat membrane is not sufficient.

SUMMERY OF THE UTILITY MODEL

For solving the problem that proposes among the above-mentioned background art, the utility model provides a printing and dyeing wastewater high flux membrane filter equipment that difficult jam, drainage are efficient.

In order to achieve the above object, the utility model provides a following technical scheme: a high-flux membrane filtering device for printing and dyeing wastewater comprises a plurality of cylindrical hollow membranes and arc flat membranes, wherein the hollow membranes are arranged in an annular or elliptical ring shape, and two adjacent hollow membranes are connected through the flat membranes and are integrally formed into a filtering membrane tube; the filter membrane pipe is fixed on the frame, a filtered water collecting device is arranged on the frame, and the end part of the filter membrane pipe is communicated with the filtered water collecting device; the water filtering and collecting device is communicated with the suction pump through a pipeline.

Preferably, the two water filtering collecting devices are sealed shells and are fixed on the frame, the filter membrane tube is arranged between the two water filtering collecting devices, and two ends of the filter membrane tube are respectively communicated and fixed with the two water filtering collecting devices.

Preferably, a support tube is embedded in the filter membrane tube, the outer wall of the support tube is matched with the inner wall of the filter membrane tube, and the tube wall of the support tube is in a net shape.

Preferably, the support tube is made of a PVC material or a PP material.

Preferably, a plurality of horizontally arranged aeration pipes are fixed at the bottom of the frame, and the display direction of the aeration pipes is vertical to the direction of the filter membrane pipes.

Preferably, a plurality of branch pipes are fixedly communicated with the aeration pipe, and the openings of the branch pipes are inclined upwards.

Preferably, the filter membrane tube is fixed on the frame in an upward inclined manner, the inclined angle is 5-30 degrees, the end surface of the lower side of the filter membrane tube is communicated with the filtered water collecting device, and the end surface of the upper side of the filter membrane tube is sealed.

Preferably, the filter membrane tubes of two adjacent rows on the frame are arranged in a staggered manner.

Preferably, a sealing ring matched with the shape of the outer wall of the filter membrane pipe is sleeved at the joint of the filter membrane pipe and the filtered water collecting device.

The utility model has the advantages that: the hollow membrane and the flat membrane are integrally formed into the filter membrane tube, firstly, the diameter of the filter membrane tube is much larger than that of the hollow membrane, so that the filter membrane tube is not easy to be gathered and wound by fiber substances in sewage, thereby reducing the accumulation of dirt on the surface of the membrane and reducing the cleaning times of the filter membrane tube; secondly, sewage to be filtered can be filtered by utilizing the hollow membrane and the flat membrane on the filter membrane pipe at the same time, the sewage filtering efficiency is higher, the sewage filtered by the hollow membrane on the surface of the filter membrane pipe flows into the water filtering and collecting device from the end part of the hollow membrane, and the sewage filtered by the flat membrane on the surface of the filter membrane pipe flows into the inner cavity of the filter membrane pipe and flows into the water filtering and collecting device from the end part. In addition, through the setting of stay tube, can make the filter membrane pipe bear bigger pressure, can prevent like this on the one hand that sewage from collapsing the filter membrane pipe, on the other hand makes the intraductal stronger negative pressure that produces of filter membrane through the suction pump to make outside sewage can more fast pass through the filter membrane pipe and filter, because the existence of stay tube, the filter membrane pipe can not take place to shrivel under the great negative pressure.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural diagram of the middle filter membrane tube of the present invention.

Fig. 3 is a front view structure diagram of the present invention.

Fig. 4 is a cross-sectional view taken at B-B of fig. 3 according to the present invention.

FIG. 5 is a cross-sectional view of the middle filter membrane tube and the support tube according to the present invention.

Wherein: 1-filter membrane tube, 11-hollow membrane, 111-hollow membrane inner cavity, 12-flat membrane, 13-filter membrane tube inner cavity, 14-concave part, 2-frame, 3-filtered water collecting device, 4-pipeline, 5-supporting tube, 6-aeration tube and 61-branch tube.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

A high-flux membrane filtration device for printing and dyeing wastewater is shown in figures 1 to 5 and comprises a plurality of cylindrical hollow membranes 11 and arc-shaped flat membranes 12, wherein the hollow membranes 11 are arranged in an annular or elliptical ring shape, and two adjacent hollow membranes 11 are connected through the flat membranes 12 and are integrally formed into a filter membrane pipe 1; the filter membrane tube 1 is fixed on the frame 2, the frame 2 is provided with a filtered water collecting device 3, and the end part of the filter membrane tube 1 is communicated with the filtered water collecting device 3 so as to collect clean water filtered by the filter membrane tube 1; the filtered water collecting device 3 is communicated with a suction pump through a pipeline 4, and the filtered water in the filtered water collecting device 3 is pumped out through the suction pump.

By integrally forming the hollow membrane 11 and the flat membrane 12 into the filter membrane tube 1, firstly, the diameter of the filter membrane tube 1 is much larger than that of the hollow membrane 11, so that the filter membrane tube is not easily gathered and wound by fiber substances in sewage, thereby reducing the accumulation of dirt on the membrane surface and reducing the cleaning times of the filter membrane tube 1; secondly, sewage to be filtered can be filtered by the hollow membrane 11 and the flat membrane 12 on the filter membrane tube 1 at the same time, the sewage filtering efficiency is higher, the sewage filtered by the hollow membrane 11 on the surface of the filter membrane tube 1 enters the hollow membrane inner cavity 111 and flows into the filtered water collecting device 3 from the end part of the hollow membrane inner cavity 111, and the sewage filtered by the flat membrane 12 on the surface of the filter membrane tube 1 enters the filter membrane tube inner cavity 13 and flows into the filtered water collecting device 3 from the end part, and then is pumped out by the suction pump. In addition, the hollow membrane 11 and the flat membrane 12 are combined into the shape of the filter membrane tube 1, so that the floor area can be saved.

In this embodiment, drainage collection device 3 is sealed casing, and is equipped with two, two drainage collection device 3 relatively fixed on frame 2, filter membrane pipe 1 sets up two drainage collection device 3 between, just filter membrane pipe 1 both ends respectively with two drainage collection device 3 intercommunication and fixed. Through setting up two drainage collection device 3, can improve the collection efficiency of drainage in the filter membrane pipe 1.

In this embodiment, as shown in fig. 5, a support tube 5 is embedded in the filter membrane tube 1, an outer wall of the support tube 5 is fitted with an inner wall of the filter membrane tube 1, a tube wall of the support tube 5 is in a mesh shape, and the support tube 5 is made of PVC material or PP material. Through the setting of stay tube 5, can make the filter membrane pipe 1 bear bigger pressure, can prevent like this on the one hand that sewage from with the filter membrane pipe 1 flat-pressing, on the other hand, when making filter membrane pipe 1 interior production stronger negative pressure through the suction pump to make outside sewage can be more fast when filtering through filter membrane pipe 1, because stay tube 5's existence, flat-pressing can not take place for filter membrane pipe 5 under the great negative pressure. In addition, the filter membrane pipe 1 supported by the supporting pipe 5 is more durable, is not easy to deform and is more convenient to clean.

In the present embodiment, as shown in fig. 1 and 4, a plurality of horizontally arranged aeration tubes 6 are fixed to the bottom of the frame 2, and the direction of the aeration tubes 6 is perpendicular to the direction of the membrane tubes 1. A plurality of branch pipes 61 are fixedly communicated with the aerator pipe 6, the openings of the branch pipes 61 are inclined upwards, and the inclined upwards opening branch pipes 61 can further drive more sewage at the bottom to be in contact with the outer surface of the filter membrane pipe 1, so that the water purification efficiency is accelerated. And because branch pipe 61 opening slant is upwards, the sewage that its drove can produce the ascending scouring effect of slant to filter membrane pipe 1 surface when contacting with filter membrane pipe 1, and then washes away the dirt on filter membrane pipe 1 surface.

In this embodiment, the filter membrane tube 1 is fixed on the frame 2 in an upward inclined manner, and the inclined angle is 5 to 30 °, the end surface of the lower side of the filter membrane tube 1 is communicated with the filtered water collecting device 3, and the end surface of the upper side is sealed. Set up like this, when the exhaust drives bottom sewage upward movement in aeration pipe 6, sewage can flow along the depressed part 14 that forms between two adjacent hollow membrane 11 in filter membrane pipe 1 surface and the dull and stereotyped membrane 12 to the dirt on filter membrane pipe 11 surface is washed away automatically, so that prevents filter membrane pipe 1's membrane pore blocking, also can reduce the washing number of times to filter membrane pipe 1 simultaneously.

In this embodiment, as further shown in fig. 4, the two adjacent rows of the filter membrane tubes 1 on the frame 2 are arranged in a staggered manner, so that the opportunity that the surfaces of the filter membrane tubes 1 on the frame 2 contact with more sewage can be further increased, and the water purification efficiency can be improved.

In this embodiment, the junction cover of filter membrane pipe 1 with drainage collection device 3 be equipped with filter membrane pipe 1 outer wall shape assorted sealing washer to prevent that sewage from permeating to drainage collection device 3 in.

The working mode and principle are as follows: when the device works, the device is firstly placed in sewage to be purified, and then the aeration pipe 6 is aerated through the air blower communicated with the aeration pipe 6; the suction pump is started and the pressure of the suction pump is adjusted, at the moment, sewage from the front and sewage at the bottom are both contacted with the filter membrane tube 1, one part of the sewage is contacted with the hollow membrane 11 on the surface of the filter membrane tube 1, is filtered by the hollow membrane 11, enters the hollow membrane inner cavity 111 and is discharged into the filtered water collecting device 3 from the end part, the other part of the sewage is contacted with the flat membrane 12 on the surface of the filter membrane tube 1, is filtered by the flat membrane 12, enters the filter membrane tube inner cavity 13 and is discharged into the filtered water collecting device 3 from the end part, and clear water in the filtered water collecting device 3 is pumped out through the suction pump.

The above embodiments are only used for illustrating the present invention, and not for limiting the present invention, and those skilled in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.

Claims

1. The utility model provides a printing and dyeing wastewater high flux membrane filter equipment which characterized in that: the filter membrane tube comprises a plurality of cylindrical hollow membranes (11) and arc flat membranes (12), wherein the hollow membranes (11) are arranged in an annular or elliptical ring shape, and each two adjacent hollow membranes (11) are connected through the flat membranes (12) and are integrally formed into the filter membrane tube (1); the filter membrane tube (1) is fixed on the frame (2), a water filtration collecting device (3) is arranged on the frame (2), and the end part of the filter membrane tube (1) is communicated with the water filtration collecting device (3); the water filtering and collecting device (3) is communicated with the suction pump through a pipeline (4).

2. The high-flux membrane filtration device for printing and dyeing wastewater according to claim 1, characterized in that: the water filtering and collecting device is characterized in that the water filtering and collecting devices (3) are sealed shells and are provided with two water filtering and collecting devices, the two water filtering and collecting devices (3) are relatively fixed on the frame (2), the filter membrane pipe (1) is arranged between the two water filtering and collecting devices (3), and the two ends of the filter membrane pipe (1) are respectively communicated with and fixed to the two water filtering and collecting devices (3).

3. The high-flux membrane filtration device for printing and dyeing wastewater according to claim 1, characterized in that: the filter membrane tube is characterized in that a supporting tube (5) is embedded into the filter membrane tube (1), the outer wall of the supporting tube (5) is matched with the inner wall of the filter membrane tube (1), and the tube wall of the supporting tube (5) is in a net shape.

4. The high-flux membrane filtration device for printing and dyeing wastewater according to claim 3, characterized in that: the supporting tube (5) is made of PVC material or PP material.

5. The high-flux membrane filtration device for printing and dyeing wastewater according to claim 1 or 2, characterized in that: a plurality of horizontally arranged aeration pipes (6) are fixed at the bottom of the frame (2), and the display direction of the aeration pipes (6) is vertical to the direction of the filter membrane pipe (1).

6. The high-flux membrane filtration device for printing and dyeing wastewater according to claim 5, characterized in that: a plurality of branch pipes (61) are fixedly communicated with the aeration pipe (6), and the openings of the branch pipes (61) are inclined upwards.

7. A high-flux membrane filtration unit for printing and dyeing wastewater according to claim 1 or 3, characterized in that: the filter membrane tube (1) is fixed on the frame (2) in an upward inclined mode, the inclined angle is 5-30 degrees, the end face of the lower side of the filter membrane tube (1) is communicated with the filtered water collecting device (3), and the end face of the upper side of the filter membrane tube is sealed.

8. The high-flux membrane filtration device for printing and dyeing wastewater according to claim 1 or 2, characterized in that: two adjacent rows of the filter membrane tubes (1) on the frame (2) are arranged in a staggered manner.

9. The high-flux membrane filtration device for printing and dyeing wastewater according to claim 7, characterized in that: two adjacent rows of the filter membrane tubes (1) on the frame (2) are arranged in a staggered manner.

10. The high-flux membrane filtration device for printing and dyeing wastewater according to claim 1, characterized in that: the joint of the filter membrane tube (1) and the filter water collecting device (3) is sleeved with a sealing ring matched with the shape of the outer wall of the filter membrane tube (1).