CN216878776U - Membrane group ware and membrane separation system - Google Patents

Abstract

The utility model discloses a membrane module device and a membrane separation system, which comprise a membrane frame, a membrane module and a water production pipe, wherein the top of the membrane frame is provided with a lifting ring, the membrane module is arranged on the membrane frame and comprises a membrane element and a water collection box for collecting water produced by the membrane element, the water production pipe is connected with the water collection box, the membrane module device obtains buoyancy required by floating in a membrane pool through the drainage volume of the membrane frame, and the membrane element is immersed in the membrane pool when the membrane module device floats in the membrane pool. The membrane filtration system can simplify the components of the membrane filtration system, is convenient to install and disassemble, and is also convenient to operate, overhaul and manage.

Description

Membrane group ware and membrane separation system

Technical Field

The utility model is used in the field of water treatment, and particularly relates to a membrane group device and a membrane separation system.

Background

Submerged microfiltration or ultrafiltration is a modern sewage treatment technology and is widely applied to the fields of domestic sewage treatment, industrial wastewater treatment, feedwater treatment and the like. For example, Membrane Bioreactor (MBR) technology is a sewage treatment method that organically combines traditional sewage biological treatment processes with submerged micro-or ultrafiltration. The core of the membrane separation system is a membrane module device.

Generally, the membrane group devices are placed in the membrane pool and fixed by the positioning guide rods, and although the membrane group devices can be limited within a certain range by the positioning guide rods, the membrane group devices in the membrane pool still have uneven phenomena, such as one end of a single membrane group device is tilted, and the heights of different membrane group devices are different, due to the shearing action of water flow in the membrane pool and the buoyancy action of water. Because the aeration device is generally arranged at the bottom of the membrane group device, uneven aeration is easy to occur due to the uneven phenomenon, and the phenomenon of sludge collection of the membrane group device is caused.

There are also submerged microfiltration or ultrafiltration membrane systems, which use a method of suspending and fixing the membrane modules on a cross beam above the membrane tank. The method also needs to accurately measure the height of the cantilever system, and ensure that all membrane group devices in each membrane pool are at the same height, otherwise, the phenomenon of nonuniform aeration can also occur. In addition, due to the suspension system, the membrane module is inconvenient to disassemble when the membrane module is cleaned ex situ.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to at least one of the technical problems of the prior art, and provides a membrane module and a membrane separation system, which can simplify the components of the membrane filtration system, facilitate the installation and disassembly, and facilitate the operation, maintenance and management.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

in a first aspect, a membrane module device comprises a membrane frame, a membrane module and a water production pipe, wherein a lifting ring is arranged at the top of the membrane frame, the membrane module is installed on the membrane frame, the membrane module comprises a membrane element and a water collection box for collecting water produced by the membrane element, the water production pipe is connected with the water collection box, the membrane module device is made by the drainage volume of the membrane frame, the membrane module device obtains buoyancy required by floating in a membrane pool, and the membrane element is immersed in the membrane pool when the membrane module device floats in the membrane pool.

With reference to the first aspect, in certain implementations of the first aspect, the membrane bioreactor further includes a floating member mounted to the membrane frame, and the membrane bioreactor obtains buoyancy required for floating in the membrane tank through the membrane frame and a displacement volume of the floating member.

With reference to the first aspect and implementations described above, in certain implementations of the first aspect, the floating member includes a pontoon mounted on top of the membrane frame.

With reference to the first aspect and the implementations described above, in certain implementations of the first aspect, the floating member includes a floating plate mounted to a side of the membrane frame.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the membrane frame is made of a hollow tube, and an end of the tube is sealed.

With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, an aeration device is disposed at the bottom of the membrane frame, an aeration pipe is connected to the top of the membrane frame, the aeration pipe is communicated with the aeration device through an inner cavity of the pipe, and the aeration pipe and the water production pipe are both flexible pipes.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the membrane rack includes multiple layers of membrane rack units distributed in a height direction, the membrane module is disposed in each layer of membrane rack unit, and the multiple layers of membrane rack units share the aeration device at the bottom of the membrane rack.

With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, an anti-collision component is disposed on a peripheral side surface of the film frame, and a counterweight is disposed inside the tube.

In a second aspect, a membrane separation system comprises a membrane tank and a membrane module device according to any one of the implementation manners of the first aspect, wherein the membrane tank is divided into a plurality of parts by partition bars, the membrane module device is placed in each part, and the membrane module device in each part is connected with a water production main pipe through a water production quick connector of a water production pipe.

With reference to the second aspect, in certain implementations of the second aspect, the membrane module cleaning device further includes a cleaning tank and a cleaning manifold, and the cleaning manifold can be connected with a water production quick connector of a water production pipe of the membrane module device placed in the cleaning tank to clean the membrane module device.

One of the above technical solutions has at least one of the following advantages or beneficial effects: the membrane group device for installing the membrane component is in a floating state in the membrane pool, is not fixedly connected with the pool body except for the water production pipe and the aeration pipe (which can be omitted), and is more convenient to install, disassemble and clean. Meanwhile, the membrane module device does not need to be fixed at the bottom of the membrane pool or on the pool wall, but is in a state of swinging along with water flow, is similar to the non-aeration reciprocating membrane module device, and can reduce the requirement on aeration by means of scouring shearing force of the water flow. Compared with the traditional membrane module device which is placed at the bottom of the membrane pool or hung on the wall of the membrane pool, the membrane module device can simplify the components of a membrane filtration system, and is convenient to install, disassemble, operate, overhaul and manage.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of a membrane module according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of one embodiment of the membrane module with the buoys and the floating plates according to the utility model;

FIG. 3 is a schematic structural view of an embodiment of the membrane module with an aeration device according to the present invention;

FIG. 4 is a schematic structural diagram of a membrane module with two membrane frame units according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of one embodiment of a membrane separation system of the present invention;

FIG. 6 is a schematic structural view of one embodiment of a cleaning tank of the present invention;

FIG. 7 is a schematic structural view of an embodiment of the membrane separation system with an aeration device according to the present invention;

FIG. 8 is a schematic structural view of one embodiment of a cleaning tank having an aeration apparatus according to the present invention.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the utility model, the meaning of "a plurality" is one or more, the meaning of "a plurality" is more than two, and the terms of "more than", "less than", "more than" and the like are understood to exclude the number; the terms "above", "below", "within" and the like are understood to include the instant numbers. In the description of the present invention, if there is description of "first" and "second" only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the present invention, unless otherwise specifically limited, the terms "disposed," "mounted," "connected," and the like are to be understood in a broad sense, and for example, may be directly connected or indirectly connected through an intermediate; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be mechanically coupled, may be electrically coupled or may be capable of communicating with each other; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above-mentioned words in the present invention can be reasonably determined by those skilled in the art in combination with the detailed contents of the technical solutions.

The embodiment of the utility model provides a membrane module device which can float in a membrane pool when in use, so that the technical problems of fixing by adopting a positioning guide rod and hanging by adopting a cross beam in the prior art are solved. The membrane filtration system is characterized in that the membrane filtration system comprises a membrane module, a membrane module and a membrane filter, wherein the membrane module is arranged on the membrane module, and the membrane module is arranged on the membrane module. When the membrane group device is placed in the membrane pool, the membrane group device is mainly subjected to the following acting forces, including the self gravity of the membrane group device (a membrane frame, a membrane, an aeration device and the like) and the buoyancy generated by the self drainage of the membrane group device. Accordingly, to float the membrane module, the additional buoyancy required to be provided is:

the required buoyancy is the buoyancy generated by the gravity of the membrane assembly device-the self drainage of the membrane assembly device.

To provide the required buoyancy, there are several methods, including: 1) selecting membrane frame materials with different densities so as to reduce the self gravity of the membrane module device; 2) hollow membrane frame materials with different shapes are selected, so that water with different volumes is removed, and different buoyancy is generated; 3) and additional parts are added, and additional buoyancy is added, such as a buoy and a floating plate. The present invention provides various embodiments for the above-described method analysis.

Referring to fig. 1, the membrane module device comprises a membrane frame 1, a membrane module and a water production pipe 2, the membrane module is mounted on the membrane frame 1, the membrane module comprises a membrane element 3 and a water collection box 4 for collecting water produced by the membrane element 3, the water production pipe 2 is connected with the water collection box 4, the membrane module device obtains buoyancy required by floating in a membrane pool through the drainage volume of the membrane frame 1, and the membrane element 3 is immersed in the membrane pool when the membrane module device floats in the membrane pool.

Wherein, the membrane element can adopt the cavity membrane silk, and the water-collecting box 4 is connected at the both ends of cavity membrane silk, further is fixed in membrane frame 1 through water-collecting box 4 to collect the membrane silk through water-collecting box 4 and produce water, produce water pipe 2 and be connected with water-collecting box 4, be used for will producing water and see off. Of course, flat sheet membranes can also be used as membrane elements.

The membrane group device for installing the membrane component is in a floating state in the membrane pool, is not fixedly connected with the pool body except that the water production pipe 2 and the aeration pipe (which can be omitted) are connected with the membrane group device, and is more convenient to install, disassemble and clean. Meanwhile, the membrane module device does not need to be fixed at the bottom of the membrane pool or on the pool wall, but is in a state of swinging along with water flow, is similar to the non-aeration reciprocating membrane module device, and can reduce the requirement on aeration by means of scouring shearing force of the water flow. Compared with the traditional membrane module device which is placed at the bottom of the membrane pool or hung on the wall of the membrane pool, the membrane module device can simplify the components of a membrane filtration system, and is convenient to install, disassemble, operate, overhaul and manage.

In some embodiments, in order to generate sufficient buoyancy, the membrane module further comprises a floating member mounted to the membrane frame 1, and the membrane module makes the membrane module obtain the buoyancy required for floating in the membrane tank through the displacement volume of the membrane frame 1 and the floating member.

Further, referring to fig. 1, the floating member includes a float bowl 5 mounted on the top of the membrane frame 1, the float bowl 5 being fixed above the membrane frame 1 by clips, and different buoyancy forces can be generated by changing the outer diameter and number of the float bowls 5.

Further, referring to fig. 2, the floating member includes a floating plate 6 installed at a side of the membrane frame 1, and the buoyancy generated may be changed by changing the thickness and height of the floating plate 6 and selecting different materials of the floating plate 6.

The immersion depth of the membrane module device in water is adjustable, the distance between the top end of the membrane module and the liquid level can be set to be 0.1-0.5 m by adjusting the floating component, and the fixed immersion depth is maintained during operation.

Wherein, referring to fig. 1, the membrane frame 1 is made of hollow tubes, and the ends of the tubes are sealed. The membrane frame 1 can be made of stainless steel or organic square or round tubes. In order to adjust the weight of the whole membrane frame, sometimes, counterweights are added in the hollow square tube or the hollow circular tube of the membrane frame, and the counterweights can be made of materials such as iron, sand and the like. The counterweight materials are sealed in the square tube or the round tube of the membrane frame and sealed by glue corners.

In some embodiments, referring to fig. 3, the bottom of the membrane frame 1 is provided with an aeration device 7, and the aeration device 7 is used for flushing the membrane module. The aeration device 7 may be a large bubble aeration box or a perforated tube (not shown). The top of the membrane frame 1 is connected with an aeration pipe 8, and the aeration pipe 8 is communicated with an aeration device 7 through the inner cavity of the pipe. In this embodiment, the membrane frame not only has the function of supporting the whole structure, but also connects the aeration pipe 8 and the aeration device 7 installed at the bottom of the membrane frame through the hollow part of the steel pipe or the organic material pipe. In this embodiment, the bottom of the floating membrane module is provided with the membrane aeration device 7, so that the aeration outlet is submerged at the same depth, the aeration amount is uniform, the pollution condition of the membrane can be improved, and the phenomenon of sludge collection of the membrane module is avoided.

Wherein, aeration pipe 8 and water production pipe 2 all adopt the flexible pipe, are convenient for the swing of membrane group ware in the membrane tank.

Referring to fig. 4, in some embodiments, the membrane rack 1 includes a plurality of membrane rack units distributed in a height direction, each membrane rack unit is provided with a membrane module, and the water production capacity of the membrane module is improved by arranging the plurality of membrane rack units. Wherein, a plurality of buoys 5 are arranged at the top of the upper membrane frame unit to generate corresponding buoyancy, and an aeration device 7 is arranged at the bottom of the lower membrane frame unit. The multi-layer membrane frame unit shares the aeration device 7 at the bottom of the membrane frame 1.

It should be noted that if the aeration pipe 8 and the aeration device 7 are removed in fig. 4, the floating double-layer membrane module with the floating pontoon 5 and the floating plate 6 can be changed.

Referring to fig. 1, a lifting ring 9 is arranged at the top of the membrane frame 1, and the whole membrane module can be lifted by the lifting ring 9 and put into or taken out of the membrane tank.

Referring to fig. 1, the peripheral side of the membrane frame 1 is provided with an anti-collision component 10 to prevent the membrane module from being damaged due to collision with the pool wall. Wherein, the anti-collision component 10 can adopt an anti-collision rubber wheel to reduce the tangential impact force of the membrane group device floating in the membrane pool.

In order to ensure that the membrane module is always kept vertically upward, the swing amplitude of the membrane module device is controlled within a reasonable range under the aeration condition, and the gravity center of the membrane module device in water is arranged at a specific position at the lower part of the whole body. The center of gravity of the membrane module can be adjusted by adjusting the installation positions of the floating part and the counterweight.

Referring to fig. 5, an embodiment of the present invention further provides a membrane separation system, which includes a membrane tank 11 and the membrane module devices in any of the above embodiments, wherein the membrane tank 11 is divided into a plurality of sections by partition bars 16, each section is provided with a membrane module device, and the membrane module devices in each section are connected with a water production main 13 through a water production quick connector 12 of a water production pipe 2. In operation, the membrane module floats on the water surface of the membrane tank 11. Because the flexible hose is connected, the liquid level in a certain range rises and falls, and the tightness of the connecting pipeline cannot be influenced. Since the aeration device 7 is not arranged at the bottom of the floating membrane module, the required aeration can be achieved by other ways, such as combined aeration (namely, the membrane tank 11 is arranged above the aerobic tank, so that the membrane tank 11 can utilize the aerobic tank to aerate tail gas). During filtration, the water production manifold 13 collects the produced water from each floating membrane module.

In the on-line cleaning, the cleaning agent is distributed to each floating membrane module from the water production main pipe 13 through the water production hose, and the membrane elements 3 are cleaned in situ.

The floating membrane group device can be used for in-situ on-line cleaning in the membrane pool 11, and restoring cleaning can be carried out, namely in-situ cleaning and ex-situ cleaning in other cleaning pools. In some designs, the membrane tank 11 is above and in communication with the aerobic tank. Therefore, when the recovery cleaning is performed, the water production quick connector 12 needs to be detached, the floating membrane module device is lifted out of the membrane pool 11 and placed in the cleaning pool, referring to fig. 6, the membrane separation system further comprises a cleaning pool 14 and a cleaning main pipe 15, and the cleaning main pipe 15 can be connected with the water production quick connector 12 of the water production pipe 2 of the membrane module device placed in the cleaning pool 14 so as to clean the membrane module device. The water producing quick connector 12 is connected with a cleaning main pipe 15 for ectopic recovery cleaning. The cleaning pool 14 is also provided with a division bar, and can clean a single membrane module device or a plurality of membrane module devices simultaneously. The cleaning tank 14 may be provided with a separate aeration system for aeration requirements during cleaning. After the cleaning is finished, the membrane group device is adjusted back to the membrane pool 11 and is connected to the water production main pipe 13 through the quick connector, and then the operation can be recovered.

Referring to fig. 7, in some embodiments, the membrane separation system further comprises an aeration device 7, and the aeration pipe 8 of the membrane module is connected with an aeration main pipe 17 through an aeration quick connector. In operation, the membrane module floats on the water surface of the membrane tank 11. Because the water production pipe 2 and the aeration pipe 8 are connected by flexible hoses, the liquid level in a certain range rises and falls, and the tightness of the connecting pipeline cannot be influenced. During filtering, the aeration main pipe 17 distributes aeration to each floating membrane group device through an aeration quick connector. The water production manifold 13 collects the water produced from each floating membrane module. During online cleaning, cleaning agents are distributed to each floating membrane group device from the water production main pipe 13 through the water production hose, and in-situ maintenance cleaning is carried out on each membrane element 3. When the recovery cleaning is carried out, the front and back inlet and outlet sluice valves of the membrane pool 11 can be closed to carry out the in-situ recovery cleaning.

Of course, the cleaning bath 14 may be removed for ex-situ cleaning. Referring to fig. 8, the wash tank 14 is provided with a separate aeration system for aeration requirements during washing. At this time, the water production quick connector 12 and the aeration quick connector are detached, the floating membrane module device is lifted out of the membrane tank 11 and placed in the cleaning tank 14, the water production quick connector 12 is connected with the cleaning main pipe 15, and the cleaning aeration quick connector is connected with the cleaning aeration pipe 18, so that the ectopic recovery cleaning is carried out. The cleaning pool 14 is also provided with a grid strip, and can clean a single membrane module device or a plurality of membrane module devices simultaneously. After the cleaning is finished, the membrane group device is adjusted back to the membrane tank 11 and is connected to the water production main pipe 13 through the water production quick connector 12, and the aeration quick connector is connected to the aeration main pipe 17, so that the operation can be recovered.

In the description herein, references to the description of the term "example," "an embodiment," or "some embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The utility model is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the utility model, and such equivalent modifications or substitutions are included in the scope of the claims of the present application.

Claims (10)

1. The utility model provides a membrane group ware, its characterized in that, includes membrane frame, membrane module and produces the water pipe, the top of membrane frame is equipped with rings, the membrane module install in the membrane frame, the membrane module includes the membrane element and collects the water-collecting box that the membrane element produced water, produce the water pipe with the water-collecting box is connected, the membrane group ware passes through the displacement volume of membrane frame makes the membrane group ware obtains to float required buoyancy in the membrane pond, when the membrane group ware floats in the membrane pond the membrane element submergence is in the membrane pond.

2. The membrane module of claim 1, further comprising a floating member mounted to the membrane frame, the membrane module providing the membrane module with a desired buoyancy to float in the membrane basin by the displacement volume of the membrane frame and the floating member.

3. A membrane module according to claim 2, wherein the float member comprises a float mounted on top of the membrane frame.

4. A membrane module according to claim 2 or 3 wherein the float member comprises a float plate mounted to the side of the membrane frame.

5. The membrane module according to claim 1, wherein the membrane frame is made of hollow tubes, the ends of which are sealed.

6. The membrane module according to claim 5, wherein an aeration device is arranged at the bottom of the membrane frame, an aeration pipe is connected to the top of the membrane frame, the aeration pipe is communicated with the aeration device through an inner cavity of the pipe, and the aeration pipe and the water production pipe are both flexible pipes.

7. The membrane module according to claim 6, wherein the membrane frame comprises a plurality of layers of membrane frame units distributed along the height direction, each layer of membrane frame unit is provided with the membrane module, and the plurality of layers of membrane frame units share the aeration device at the bottom of the membrane frame.

8. The membrane module device according to claim 5, wherein the peripheral side of the membrane frame is provided with an anti-collision component, and the interior of the tube is provided with a counterweight.

9. A membrane separation system, which comprises a membrane pool and the membrane group device as claimed in any one of claims 1 to 8, wherein the membrane pool is divided into a plurality of parts by partition bars, the membrane group device is arranged in each part, and the membrane group device in each part is connected with a water production main pipe through a water production quick connector of a water production pipe.

10. The membrane separation system according to claim 9, further comprising a washing tank and a washing header connectable to a water production quick connector of a water production pipe of a membrane module placed in the washing tank to wash the membrane module.

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