CN210065259U - Reciprocating type membrane filtration system - Google Patents

Abstract

The utility model discloses a reciprocating type membrane filtration system, be in including membrane filtration reactor (1), setting membrane case (2) in membrane filtration reactor (1), membrane filtration reactor (1) is equipped with water inlet (1-1) and mud discharging port (1-2), membrane case (2) upper portion is equipped with produces mouth of a river (2-3), membrane case (2) bottom with membrane filtration reactor (1) bottom sliding fit, membrane case (2) are connected and are in with drive arrangement (5) transmission drive arrangement (5) drive down reciprocating motion in membrane filtration reactor (1). The utility model provides a reciprocating type membrane filtration system, simple structure saves the energy consumption, improves filtration efficiency.

Description

Reciprocating type membrane filtration system

Technical Field

The utility model belongs to the technical field of sewage treatment, in particular to reciprocating type membrane filtration system.

Background

The membrane filtration technology is a membrane separation technology taking pressure as driving force, is also called as membrane filtration technology, and is an effective means for deep water treatment. The Submerged Membrane Filtration (SMF) process, one of the technologies, is a novel membrane filtration treatment process derived from the combination of an ultra-low pressure hollow fiber membrane technology and a continuous membrane filtration technology.

SMF uses an open hollow fiber membrane component, the membrane is directly placed in a membrane pool filled with water to be treated, water permeates the surface of the membrane and is pumped out from the inner side of the hollow fiber membrane through negative pressure suction and atmospheric pressure of a pump, so that the aim of filtration and purification is fulfilled, the bottleneck of a membrane filtration process is membrane pollution, and therefore the membrane filtration effect mainly depends on the adoption of an effective and feasible membrane cleaning method. The common techniques of physical cleaning are hydraulic cleaning technique and gas-liquid pulse technique, and membrane pollutants are usually used for removing the pollutants by using gas, water or mixed fluid of water and air in a reverse or tangential direction, so that the method is a basic cleaning method at the initial stage of membrane pollution and is mainly used for removing reversible pollution. As shown in fig. 1, a membrane tank 200 is provided in a membrane filtration reactor 100, a perforated aeration pipe 500 is provided at a lower portion of the membrane tank 200, and the perforated aeration pipe 500 is connected to an aeration fan 300 via an aeration main pipe 400. The membrane module 202 is cleaned by aeration. The process flow is shown in figure 2.

However, such cleaning methods often have to provide more gas to improve the cleaning effect, thereby consuming a lot of energy, possibly forming a mist or foam flow, thereby reducing the effective membrane filtration area, and also causing damage to the membrane filaments during cleaning, reducing the membrane lifetime. In high solids environments, the gas dispersion system is gradually blocked by the dehydrated solids or when the gas flow suddenly stops, causing inconvenience for later maintenance. On the other hand, in the aeration process, the bottom sludge of the membrane tank can be disturbed, the short-time pollution of the membrane is accelerated, the sludge sedimentation and the sludge discharge are not facilitated, and the operation difficulty is increased.

Disclosure of Invention

The utility model aims at providing a reciprocating type membrane filtration system reduces the energy consumption, improves filtration efficiency.

Based on the above problem, the utility model provides a technical scheme is:

the utility model provides a reciprocating type membrane filtration system, includes membrane filtration reactor, sets up membrane case in the membrane filtration reactor, membrane filtration reactor is equipped with water inlet and mud discharging port, membrane case upper portion is equipped with produces the mouth of a river, membrane bottom of the case portion with membrane filtration reactor bottom sliding fit, the membrane case is connected with the drive arrangement transmission and drive arrangement drives down reciprocating motion in the membrane filtration reactor.

In some embodiments, a slide rail is fixed at the bottom of the membrane filtration reactor, and a plurality of pulleys matched with the slide rail are arranged at the bottom of the membrane box.

In some embodiments, the membrane box comprises a membrane frame, and a membrane module disposed in the membrane frame, wherein the plurality of pulleys are disposed at the bottom of the membrane frame.

In some of these embodiments, the membrane module is a PTFE membrane.

In some embodiments, the driving device is a cylinder and is disposed obliquely above the membrane filtration reactor, and the cylinder is connected to the upper end of the membrane holder via a connecting rod.

In some embodiments, the film frame comprises a first rod body and a second rod body, wherein the first rod body is horizontally arranged, the second rod body is connected with the first rod body at an angle, the first rod body is in transmission connection with the cylinder, and the second rod body is connected with the film frame.

In some of these embodiments, the tip of cylinder is equipped with fixed sleeve, first body of rod is worn to establish in fixed sleeve and with the cylinder transmission is connected.

Compared with the prior art, the utility model has the advantages that:

1. by adopting the technical scheme of the utility model, the membrane component reciprocating motion is adopted to replace the continuous or intermittent aeration mode of the traditional membrane filtration system, the aeration system is not needed, and the energy consumption can be greatly reduced;

2. by adopting the technical scheme of the utility model, the traditional aeration mode is replaced by the reciprocating motion mode of the membrane component, so that the disturbance caused by aeration bottom mud is reduced, and the sludge sedimentation and the bottom mud discharge are facilitated;

3. by adopting the technical scheme of the utility model, the membrane component filters the collision and friction between membranes in the reciprocating motion process, impacts off the pollutants attached to the surface of the membrane filaments, slows down the membrane pollution, prolongs the cleaning period of the membrane component, and reduces the investment of medicament and manpower;

4. by adopting the technical scheme of the utility model, an aeration system is not needed, an aeration fan and an aeration pipeline are avoided, the equipment investment can be reduced, the problem that the perforated aeration pipe is blocked by sludge can be further avoided, and the normal operation of the membrane filtration system is ensured;

5. by adopting the technical scheme of the utility model, no bubble is generated by aeration, so that a defoaming system is not needed, the maintenance is convenient, and the investment cost is reduced;

6. adopt the technical scheme of the utility model, because do not set up aeration systems, need not to reserve gaseous ascending passageway, can reduce the filtration membrane interval, increase filtration membrane quantity, improve the filter effect, be favorable to reducing the membrane pond area.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a conventional membrane filtration system of the prior art;

FIG. 2 is a process flow diagram of a conventional membrane filtration system of the prior art;

FIG. 3 is a schematic structural diagram of an embodiment of a reciprocating membrane filtration system according to the present invention;

fig. 4 is a schematic view of an operating state of the embodiment of the present invention;

FIG. 5 is a process flow diagram of an embodiment of the present invention;

wherein:

100. a membrane filtration reactor; 101. a water inlet; 102. a sludge discharge port; 200. a membrane box; 201. a film frame; 202. a membrane module; 203. a water producing port; 300. an aeration fan; 400. an aeration main pipe; 500. perforating an aeration pipe;

1. a membrane filtration reactor; 1-1, a water inlet; 1-2, a sludge discharge port; 2. a membrane box; 2-1, a membrane frame; 2-2, membrane module; 2-3, producing a water gap; 3. a slide rail; 4. a pulley; 5. a drive device; 6. a connecting rod; 6-1, a first rod body; 6-2, a second rod body; 7. and fixing the sleeve.

Detailed Description

The above-described scheme is further illustrated below with reference to specific examples. It should be understood that these examples are for illustrative purposes and are not intended to limit the scope of the present invention. The conditions used in the examples may be further adjusted according to the conditions of the particular manufacturer, and the conditions not specified are generally the conditions in routine experiments.

Referring to fig. 2-3, for the structural schematic diagram of the present invention, a reciprocating membrane filtration system is provided, which comprises a membrane filtration reactor 1 and a membrane box 2 disposed in the membrane filtration reactor 1, wherein the upper portion of the membrane filtration reactor 1 is provided with a water inlet 1-1, the bottom of the membrane filtration reactor is provided with a sludge discharge port 1-2, the upper portion of the membrane box 2 is provided with a water production port 2-3, and the water production port 2-3 is connected to a water production suction pump. The utility model discloses an improve the part in, get rid of the aeration systems among the traditional membrane filtration system, 2 bottoms of membrane case and 1 bottom sliding fit of membrane filtration reactor, membrane case 2 is connected and is driven at drive arrangement 5 and be driven at drive arrangement 5 and down reciprocating motion in membrane filtration reactor 1 simultaneously.

Specifically, a slide rail 3 is fixed at the bottom of the membrane filtration reactor 1, and a plurality of pulleys 4 matched with the slide rail 3 are arranged at the bottom of the membrane box 2. Slide rail 3 and pulley 4 can adopt slide rail and pulley commonly used among the prior art, and pulley 3 also is prior art with the cooperation of slide rail 4, the utility model discloses no longer describe repeatedly.

The membrane box 2 comprises a membrane frame 2-1 and a membrane assembly 2-2 arranged in the membrane frame 2-1, and a plurality of pulleys 4 matched with the slide rails 3 are arranged at the bottom of the membrane frame 2-1. The membrane component 2-2 adopts a PTFE membrane, can bear the impact caused by reciprocating motion and is not easy to cause the fracture of membrane yarns.

The drive means 5 is a gas cylinder and is arranged obliquely above the membrane filtration reactor 1, in this case, the gas cylinder being fixed to the hardened ground. The cylinder is connected with the upper end of the membrane box 2 through a connecting rod 6. Specifically, the connecting rod 6 comprises a first rod body 6-1 and a second rod body 6-2, wherein the first rod body 6-1 is horizontally arranged, the second rod body 6-2 is connected with the first rod body 6-1 in an angle mode, the first rod body 6-1 is in transmission connection with the air cylinder, and the second rod body 6-2 is connected with the film frame 2-1. The cylinder is connected with an electric control system, and the membrane box 2 is pulled to reciprocate through the connecting rod 6 by the reciprocating motion of the piston rod of the cylinder.

In order to further optimize the implementation effect of the utility model, a fixed sleeve 7 is arranged at the end part of the cylinder, the first rod body 6-1 is arranged in the fixed sleeve 7 in a penetrating way and is in transmission connection with the cylinder, the fixed sleeve 7 is arranged to fix the first rod body 6-1, the length of the first rod body 6-1 is convenient to increase so as to be connected with the membrane frame 2-1, and the stability of the first rod body 6-1 in the moving process can be improved.

Referring to fig. 5, the process flow of the membrane filtration system is as follows:

firstly, water purification treatment, namely leading front-end process effluent to enter a membrane filtration reactor 1 through a water inlet pipe, leading water to permeate the surface of a membrane and to exit from the inner side of the membrane through negative pressure suction and atmospheric pressure of a pump under the action of a membrane component 2-2, and intercepting pollutants at the outer side of the membrane so as to purify wastewater;

secondly, cleaning the membrane modules 2-2, driving the membrane box 2 to reciprocate through a driving device 5, and enabling pollutants attached to the surfaces of the membrane modules 2-2 to fall off due to the friction and collision among the membrane modules 2-2;

thirdly, discharging sludge, wherein when the sludge reaches a certain amount, the sludge is discharged through a sludge discharge port 1-2;

after cycling for a number of cycles, the membrane filtration reactor 1 was vented for maintenance cleaning.

The above examples are only for illustrating the technical conception and the features of the present invention, and the purpose thereof is to enable one skilled in the art to understand the contents of the present invention and to implement the present invention, which should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (7)

1. The utility model provides a reciprocating type membrane filtration system, includes membrane filtration reactor (1), sets up membrane case (2) in membrane filtration reactor (1), membrane filtration reactor (1) is equipped with water inlet (1-1) and mud discharging port (1-2), membrane case (2) upper portion is equipped with produces mouth of a river (2-3), its characterized in that: the bottom of the membrane box (2) is in sliding fit with the bottom of the membrane filtration reactor (1), and the membrane box (2) is in transmission connection with a driving device (5) and is driven by the driving device (5) to move in the membrane filtration reactor (1) in a reciprocating mode.

2. The reciprocating membrane filtration system of claim 1, wherein: the bottom of membrane filtration reactor (1) is fixed with slide rail (3), the bottom of membrane case (2) be equipped with a plurality of pulleys (4) that slide rail (3) match.

3. The reciprocating membrane filtration system of claim 2, wherein: the membrane box (2) comprises a membrane frame (2-1) and a membrane assembly (2-2) arranged in the membrane frame (2-1), and the bottom of the membrane frame (2-1) is provided with the pulleys (4).

4. The reciprocating membrane filtration system of claim 3, wherein: the membrane component (2-2) is a PTFE membrane.

5. The reciprocating membrane filtration system of claim 3, wherein: the driving device (5) is a cylinder and is arranged above the membrane filtration reactor (1) in an inclined manner, and the cylinder is connected with the upper end of the membrane box (2) through a connecting rod (6).

6. The reciprocating membrane filtration system of claim 5, wherein: the connecting rod (6) comprises a first rod body (6-1) and a second rod body (6-2), wherein the first rod body (6-1) is horizontally arranged, the second rod body is connected with the first rod body (6-1) in an angle mode, the first rod body (6-1) is in transmission connection with the air cylinder, and the second rod body (6-2) is connected with the film frame (2-1).

7. The reciprocating membrane filtration system of claim 6, wherein: the end part of the cylinder is provided with a fixed sleeve (7), and the first rod body (6-1) penetrates through the fixed sleeve (7) and is in transmission connection with the cylinder.

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