Short curtain type MBR (Membrane Bioreactor) membrane module device

Abstract

The utility model discloses a short curtain type MBR (Membrane Biological Reactor) membrane group device which comprises a membrane frame, a water production assembly, an aeration assembly and a plurality of curtain type membrane assemblies, and the plurality of curtain type membrane assemblies, the water production assembly and the aeration assembly are all integrally arranged on the membrane frame. The water production assembly and the aeration assembly are integrally assembled with the membrane frame, so that the use amount of UPVC (Unplasticized Polyvinyl Chloride) pipes, elbows, loose joints, tee joints, pipe supports and the like is reduced, the installation efficiency is improved, and the risk of leakage caused by damage of the UPVC pipes is also reduced; the occupied area of the membrane frame can be reduced, and the filling density is improved; the membrane frame is matched with a hoisting mechanism to facilitate on-site hoisting.

Description

Technical Field

[0001] This utility model specifically relates to a short curtain-type MBR membrane module device. Background Technology

[0002] Currently, submerged membrane bioreactor (MBR) technology is mainly used in the wastewater treatment industry, including the treatment and reuse of municipal wastewater, high-concentration organic wastewater, recalcitrant industrial wastewater, and wastewater from public health sensitive areas. The core components of this technology include the bioreactor and membrane modules, with flat-sheet membrane modules and hollow fiber membrane modules being the two most commonly used types. Hollow fiber membrane modules are the most widely used due to their high packing density, low investment cost, and suitability for various treatment scales.

[0003] In submerged membrane bioreactors, hollow fiber membrane modules mainly come in several forms, including curtain-type, seaweed-type, and bundle-type modules. Curtain-type membrane modules have become the mainstream choice in the market due to their advantages such as simple casting process, high unit filling area, low production cost, and high flexibility in membrane area per module.

[0004] Curtain-type membrane modules are categorized into 1250mm (long), 780mm (medium), and 535mm (short) models based on the length of their plastic ends. Traditional short curtain-type MBR membrane modules utilize UPVC pipes for both the permeate and inlet lines, employing numerous UPVC pipes, unions, tees, crosses, elbows, and other fittings. This leads to complex installation, numerous potential leaks, and the susceptibility of UPVC pipes to damage and aging. Furthermore, the large space occupied by UPVC pipes results in a lower packing density for short curtain-type MBR membrane modules. Finally, traditional short curtain-type MBR membrane modules typically use perforated aeration pipes. Since the blower's gas temperature is generally high, if aeration stops, the gas inside the perforated aeration pipe gradually cools, reducing its volume, and sludge is drawn into the perforated pipe through the aeration holes. Over time, the aeration holes and perforated pipes become clogged with sludge, leading to uneven aeration and accelerating MBR membrane module fouling. Therefore, there is an urgent need in the market for a short curtain-type MBR membrane module device with a simple structure and aeration pipeline that is not easily blocked. Utility Model Content

[0005] The purpose of this invention is to provide a short curtain-type MBR membrane module device.

[0006] The technical solution of this utility model is as follows:

[0007] A short curtain-type MBR membrane module device includes:

[0008] A membrane frame, on which a hoisting mechanism is installed.

[0009] Several curtain membrane modules,

[0010] A permeate module for collecting permeate from several curtain membrane modules.

[0011] An aeration assembly has several aeration branch pipes located below several curtain membrane components. Each aeration branch pipe has several aeration holes evenly spaced along its length, and one end of the branch pipe is a free end. The free end is bent downward to form a sludge discharge pipe so as to discharge the sludge entering the aeration branch pipe during the aeration process and avoid clogging of the aeration holes.

[0012] Several curtain membrane modules, permeate modules, and aeration modules are integrated and installed on the above-mentioned membrane frame.

[0013] In a preferred embodiment of this utility model, the membrane frame is a rectangular frame composed of several vertical columns and several horizontal beams connected together, and the hoisting mechanism is located at the top of the rectangular frame.

[0014] A water production assembly includes a main water production pipe, an upper water collection pipe, a lower water collection pipe, and at least one connecting pipe. The main water production pipe is connected to the upper water collection pipe, and the upper water collection pipe is connected to the lower water collection pipe through at least one connecting pipe. Both sides of the upper water collection pipe along its length direction are provided with a plurality of upper water collection holes at equal intervals along its length direction, and both sides of the lower water collection pipe along its length direction are provided with a plurality of lower water collection holes at equal intervals along its length direction.

[0015] An aeration assembly includes two air inlet pipes, one air inlet connecting pipe, one air distribution pipe, and several aeration branch pipes. The two air inlet pipes are connected to the air distribution pipe and several aeration branch pipes in sequence through the air inlet connecting pipe. Several air distribution holes are provided on both sides of the length direction of the air distribution pipe at equal intervals along its length direction. One end of the several aeration branch pipes is connected to the several air distribution holes.

[0016] In a plurality of curtain membrane modules, each curtain membrane module has a plurality of hollow fiber membrane filaments, an upper membrane shell and a lower membrane shell. One end of each hollow fiber membrane filament is connected to the upper membrane shell through an upper colloid, and the other end is connected to the lower membrane shell through a lower colloid. The upper colloid and the inner cavity of the upper membrane shell enclose an upper permeate chamber that communicates with the filter membrane pores of the hollow fiber membrane filaments. One end of the upper membrane shell in the length direction has an upper permeate port that communicates with the upper permeate chamber, and the other end of the upper membrane shell in the length direction is sealed. It is provided with an upper mounting end installed on the membrane frame. The lower colloid and the inner cavity of the lower membrane shell enclose a lower permeate chamber that communicates with the filter membrane pores of the hollow fiber membrane filaments. One end of the lower membrane shell in the length direction has a lower permeate port that communicates with the lower permeate chamber, and the other end of the lower membrane shell in the length direction is sealed. It is provided with a lower mounting end installed on the membrane frame.

[0017] The aforementioned upper and lower water collection pipes are parallel to each other and are respectively installed on the upper and lower top surfaces of the membrane frame. The plane containing the upper and lower water collection pipes divides the interior of the membrane frame into two equal accommodating spaces. The aforementioned curtain-type membrane modules are evenly installed in these two accommodating spaces, with their upper product inlets connected to the upper water collection holes and their lower product inlets connected to the lower water collection holes. The upper and lower installation ends are installed at equal intervals on two parallel horizontal beams that constitute the membrane frame. In each accommodating space, the center distance between two adjacent curtain-type membrane modules is 65-100mm, and several aeration branch pipes are located directly below the gap between the two adjacent curtain-type membrane modules.

[0018] More preferably, the upper water collection pipe and the lower water collection pipe have the same diameter.

[0019] More preferably, the two air inlet pipes are parallel to the several vertical columns constituting the membrane frame and are vertically connected to the air inlet connecting pipe.

[0020] More preferably, the air distribution pipe is parallel to the lower water collection pipe and is located below the vertical projection of the lower water collection pipe, and the air inlet connection pipe is located on the same horizontal plane as the air distribution pipe.

[0021] More preferably, the aeration holes are opened directly downwards or at a 45-degree angle downwards.

[0022] In a preferred embodiment of the present invention, the hoisting mechanism includes a hoisting rod body and a plurality of hoisting feet. The plurality of hoisting feet are evenly installed on the water balance beam constituting the membrane frame. Each hoisting foot has an inverted U-shaped structure adapted to the horizontal beam. The inverted U-shaped structure is welded to the horizontal beam to form a complete and continuous weld along the edge of the U-shaped structure. The hoisting rod body is detachably connected to the plurality of hoisting feet by bolts.

[0023] The beneficial effects of this utility model are:

[0024] 1. The water production component and aeration component of this utility model are integrated with the membrane frame, which reduces the amount of UPVC pipes, elbows, unions, tees, pipe supports, etc., improves installation efficiency, and also reduces the risk of leakage due to damage to UPVC pipes.

[0025] 2. The other end of the aeration branch pipe of this utility model is provided with a downward sludge discharge pipe, which is used to discharge the sludge that enters the aeration branch pipe and avoid clogging of the aeration holes.

[0026] 3. This utility model adopts an integrated membrane frame, in which the upper water collection pipe, lower water collection pipe and air distribution pipe are all attached to a part of the membrane frame, which can reduce the footprint of the membrane frame and increase the filling density.

[0027] 4. The membrane frame of this utility model is equipped with a hoisting mechanism for convenient on-site hoisting. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present utility model. Figure 1 .

[0029] Figure 2 This is a three-dimensional structural diagram of Embodiment 1 of the present utility model. Figure 2 .

[0030] Figure 3 This is a schematic diagram of the structure of the hanging leg 52 in Embodiment 1 of this utility model.

[0031] Figure 4 This is a three-dimensional structural diagram of the curtain membrane assembly in Embodiment 1 of this utility model.

[0032] Figure 5 This is a three-dimensional structural diagram of the aeration branch pipe of Embodiment 1 of this utility model. Detailed Implementation

[0033] The technical solution of this utility model will be further explained and described below with reference to specific embodiments and accompanying drawings.

[0034] like Figures 1 to 2 As shown in Figure 4, a short curtain-type MBR membrane module device includes a membrane frame 1, a permeate assembly 2, an aeration assembly 3, and several curtain-type membrane modules 4 mounted on the membrane frame 1.

[0035] The membrane frame 1 is a rectangular frame consisting of several vertical columns 11 and several horizontal beams 12 connected together, and a hoisting mechanism 5 is provided on it.

[0036] The water production assembly 2 is used to collect water from several curtain membrane modules 4. It includes a water production main pipe 21, an upper water collection pipe 22, a lower water collection pipe 24, and two connecting pipes 23. The upper water collection pipe 22 and the lower water collection pipe 24 have the same diameter. The water production main pipe 21 is connected to the upper water collection pipe 22. The upper water collection pipe 22 is connected to the lower water collection pipe 24 through the two connecting pipes 23. Several upper water collection holes 221 are provided at equal intervals along the length direction on both sides of the upper water collection pipe 22. Several lower water collection holes 241 are provided at equal intervals along the length direction on both sides of the lower water collection pipe 24.

[0037] Aeration assembly 3, used for aerating the aforementioned curtain-type membrane modules 4, includes two air inlet flanges 31, two air inlet pipes 32, one air inlet connecting pipe 33, one air distribution pipe 34, and several aeration branch pipes 35. The two air inlet flanges 31 are respectively installed on the two air inlet pipes 32. Both air inlet pipes 32 are sequentially connected to the air distribution pipe 34 and several aeration branch pipes 35 via the air inlet connecting pipe 33. The air distribution pipe 34 has several air distribution holes 341 evenly spaced along its length on both sides. One end of each aeration branch pipe 35 is connected to the air distribution holes 341 by welding, threaded connection, or insertion; the other end is a free end, bent downwards to form a sludge discharge pipe 352 (e.g., ...). Figure 5 As shown), it is used to discharge sludge entering the aeration branch pipe 35 during the aeration process, and the aeration branch pipe 35 has a plurality of aeration holes 351 (opening directly downward or opening at a 45-degree angle downward) evenly arranged along its length direction. The sludge discharge pipe 352 can thus avoid the blockage of the plurality of aeration holes 351. Specifically, the second air inlet pipe 32 is parallel to a plurality of vertical pipe columns 11 constituting the membrane frame 1 and is vertically connected to the air inlet connecting pipe 33. The air distribution pipe 34 is parallel to the lower water collection pipe 24 and is located below the vertical projection of the lower water collection pipe 24. The air inlet connecting pipe 33 and the air distribution pipe 34 are located on the same horizontal plane.

[0038] like Figure 4 As shown, in a plurality of curtain membrane modules 4, each curtain membrane module 4 has a plurality of hollow fiber membrane filaments 41, an upper membrane shell 42 and a lower membrane shell 43. One end of each hollow fiber membrane filament is connected to the upper membrane shell 42 through an upper colloid (not shown in the figure), and the other end is connected to the lower membrane shell 43 through a lower colloid (not shown in the figure). The upper colloid and the inner cavity of the upper membrane shell 42 enclose an upper permeate cavity (not shown in the figure) that communicates with the filter membrane pores of the hollow fiber membrane filaments 41, and one end of the upper membrane shell 42 in the length direction has There is an upper water outlet 421 that connects to the upper water production chamber. The other end of the upper membrane shell 42 in the length direction is blocked, and an upper mounting end 422 is provided on the membrane frame 1. The lower colloid and the inner cavity of the lower membrane shell 43 enclose a lower water production chamber (not shown in the figure) that connects to the filter membrane pores of the hollow fiber membrane filament 41. One end of the lower membrane shell 43 in the length direction has a lower water outlet 431 that connects to the lower water production chamber. The other end of the lower membrane shell 43 in the length direction is blocked, and a lower mounting end 432 is provided on the membrane frame 1.

[0039] The hoisting mechanism 5, installed on the top of the membrane frame 1, includes a main body 51 of a hoisting rod and several lifting feet 52. The lifting feet 52 are evenly distributed on the horizontal beam 12 constituting the membrane frame 1. Each lifting foot 52 has an inverted U-shaped structure adapted to the horizontal beam 12 (e.g., ...). Figure 3As shown), the inverted U-shaped structure is welded to the horizontal beam 12 to form a complete and continuous weld along the edge of the U-shaped structure, which improves the connection strength between the lifting feet 52 and the horizontal beam 12. The main body of the lifting rod 51 is detachably connected to the plurality of lifting feet 52 by bolts.

[0040] The aforementioned upper water collection pipe 22 and lower water collection pipe 24 are parallel to each other and are respectively installed on the upper and lower top surfaces of the membrane frame 1. The plane containing the upper water collection pipe 22 and lower water collection pipe 24 divides the interior of the membrane frame 1 into two equal receiving spaces. The aforementioned plurality of curtain-type membrane modules 4 are evenly installed in these two receiving spaces. Their upper product water inlet 421 is connected to the upper water collection hole 221 through a union or plug, and their lower product water inlet 431 is connected to the lower water collection hole 241 through a union or plug. The upper installation end 422 and the lower installation end 431 are connected to the lower water collection hole 241 through a union or plug. End 432 are all installed at equal intervals on two parallel horizontal beams 12 that constitute the membrane frame 1 by locking bolts or fixing blocks; in each accommodating space, the center distance between two adjacent curtain membrane modules 4 is 65-100mm, which makes the fluid channel width consistent and the fluid distribution more uniform during operation; several aeration branch pipes 35 are located directly below the gap between the two adjacent curtain membrane modules 4 to ensure that the air bubble rising channel is unobstructed and effectively alleviate the sludge accumulation at the bottom of the curtain membrane module 4.

[0041] The above description is only a preferred embodiment of the present utility model, and therefore cannot be used to limit the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the present utility model patent and the contents of the specification should still fall within the scope of the present utility model.

Claims

1. A short-length curtain-type MBR membrane module device, characterized in that: include: A membrane frame, on which a hoisting mechanism is installed. Several curtain membrane modules, A permeate module is used to collect permeate from the aforementioned curtain membrane modules. An aeration assembly is used to aerate the aforementioned curtain membrane modules. It has several aeration branch pipes located below the curtain membrane modules. Each aeration branch pipe has several aeration holes evenly spaced along its length, and one end of the branch pipe is a free end. The free end is bent downward to form a sludge discharge pipe to discharge the sludge entering the aeration branch pipe during the aeration process and to prevent the aeration holes from being blocked. Several curtain membrane modules, permeate modules, and aeration modules are integrated and installed on the above-mentioned membrane frame.

2. The short-curtain MBR membrane module device as described in claim 1, characterized in that: The membrane frame is a rectangular frame composed of several vertical columns and several horizontal beams. The hoisting mechanism is located on the top of the rectangular frame. The water production assembly includes a main water production pipe, an upper water collection pipe, a lower water collection pipe, and at least one connecting pipe. The main water production pipe is connected to the upper water collection pipe, and the upper water collection pipe is connected to the lower water collection pipe through at least one connecting pipe. Several upper water collection holes are provided at equal intervals along the length direction on both sides of the upper water collection pipe, and several lower water collection holes are provided at equal intervals along the length direction on both sides of the lower water collection pipe. An aeration assembly includes two air inlet pipes, one air inlet connecting pipe, one air distribution pipe, and several aeration branch pipes. The two air inlet pipes are connected to the air distribution pipe and several aeration branch pipes in sequence through the air inlet connecting pipe. Several air distribution holes are provided on both sides of the length direction of the air distribution pipe at equal intervals along its length direction. One end of the several aeration branch pipes is connected to the several air distribution holes. In a plurality of curtain membrane modules, each curtain membrane module has a plurality of hollow fiber membrane filaments, an upper membrane shell and a lower membrane shell. One end of each hollow fiber membrane filament is connected to the upper membrane shell through an upper colloid, and the other end is connected to the lower membrane shell through a lower colloid. The upper colloid and the inner cavity of the upper membrane shell enclose an upper permeate cavity that communicates with the filter membrane pores of the hollow fiber membrane filaments. One end of the upper membrane shell in the length direction has an upper permeate port that communicates with the upper permeate cavity, and the other end of the upper membrane shell in the length direction is sealed. It is provided with an upper mounting end installed on the membrane frame. The lower colloid and the inner cavity of the lower membrane shell enclose each other to form a lower product water chamber that connects to the filter membrane pores of the hollow fiber membrane filaments. One end of the lower membrane shell in the length direction has a lower product water port that connects to the lower product water chamber, and the other end of the lower membrane shell in the length direction is sealed. It is provided with a lower mounting end installed on the membrane frame. The aforementioned upper and lower water collection pipes are parallel to each other and are respectively installed on the upper and lower top surfaces of the membrane frame. The plane containing the upper and lower water collection pipes divides the interior of the membrane frame into two equal accommodating spaces. The aforementioned curtain-type membrane modules are evenly installed in these two accommodating spaces, with their upper product inlets connected to the upper water collection holes and their lower product inlets connected to the lower water collection holes. The upper and lower installation ends are installed at equal intervals on two parallel horizontal beams that constitute the membrane frame. In each accommodating space, the center distance between two adjacent curtain-type membrane modules is 65-100mm, and several aeration branch pipes are located directly below the gap between the two adjacent curtain-type membrane modules.

3. The short-curtain MBR membrane module device as described in claim 2, characterized in that: The upper and lower water collection pipes have the same diameter.

4. The short-curtain MBR membrane module device as described in claim 2, characterized in that: The two air inlet pipes are parallel to the several vertical columns that constitute the membrane frame and are perpendicularly connected to the air inlet connecting pipe.

5. A short-curtain type MBR membrane module device as described in claim 4, characterized in that: The air distribution pipe is parallel to the lower water collection pipe and is located below the vertical projection of the lower water collection pipe. The air inlet connection pipe is located on the same horizontal plane as the air distribution pipe.

6. A short-curtain type MBR membrane module device as described in claim 2, characterized in that: The aeration holes are opened directly downwards or at a 45-degree angle downwards.

7. A short-curtain type MBR membrane module device as described in any one of claims 2 to 6, characterized in that: The hoisting mechanism includes a main body of a hoisting rod and several lifting feet. The lifting feet are evenly installed on the water balance beam that constitutes the membrane frame. Each lifting foot has an inverted U-shaped structure that is adapted to the horizontal beam. The inverted U-shaped structure is welded to the horizontal beam to form a complete and continuous weld along the edge of the U-shaped structure. The main body of the hoisting rod is detachably connected to the several lifting feet by bolts.

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