CN216764615U - MBR integration sewage treatment plant - Google Patents

Abstract

The utility model provides an MBR integrated sewage treatment device, which comprises a box body, an anaerobic cavity arranged in the box body, an aerobic cavity arranged in the box body, an MBR membrane assembly arranged in the aerobic cavity, and an aerobic cavity arranged in the aerobic cavity. The connecting water pipes connected with the MBR membrane modules, the water pump arranged on the connecting water pipes, the air inlet pipes arranged on the bottom end of the box body, and the fans arranged on the air inlet pipes. This application optimizes the traditional sewage purification process by using MBR membrane modules, so as to greatly reduce the complicated secondary sedimentation tank, tertiary treatment process, etc., so that the sewage treatment process can be integrated on a certain volume of the box. Furthermore, in actual use, this kind of box can be directly produced and sold as a finished product. Compared with the traditional sewage treatment process, this design scheme does not require on-site construction to open a corresponding sewage treatment tank, so the overall low production cost.

Description

MBR integration sewage treatment plant

Technical Field

The utility model belongs to the technical field of sewage purification, and particularly relates to an MBR (membrane bioreactor) integrated sewage treatment device.

Background

In the traditional sewage treatment technology, a secondary sedimentation tank and a tertiary treatment process are required, the whole sewage treatment process is complicated, and in actual use, the sewage treatment process is difficult to integrate into a box body with a small volume, so that the traditional thinking and method are greatly limited in the design of the movably arranged sewage treatment box body.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides an efficient MBR integrated sewage treatment device.

The utility model provides the following technical scheme for achieving the aim: an MBR integrated sewage treatment device comprises a box body, an anaerobic cavity arranged in the box body, an aerobic cavity arranged in the box body, an MBR membrane component arranged in the aerobic cavity, a connecting water pipe connected with the MBR membrane component, a water pump arranged on the connecting water pipe, an air inlet pipe arranged at the bottom end of the box body, a fan arranged on the air inlet pipe, a nitrification reflux pipe arranged on the box body and a sludge reflux pipe arranged on the box body, wherein one end of the nitrification reflux pipe is communicated with the aerobic cavity, and the other end of the nitrification reflux pipe is communicated with the anaerobic cavity; one end of the sludge return pipe is communicated with the aerobic cavity, and the other end of the sludge return pipe is communicated with the anaerobic cavity.

This use is carried out and is optimized traditional sewage purification technology through utilizing MBR membrane module, thereby will be heavy two heavy ponds, tertiary treatment process etc. carry out a large amount of reductions, thereby can be integrated on the box of certain volume with sewage treatment process, and then in the in-service use, can directly produce and sell this kind of box as the finished product, compare in traditional sewage treatment process, this kind of design need not be under construction on the spot, in order to set up corresponding sewage treatment pond, so holistic low in production cost.

Meanwhile, an MBR (membrane bioreactor) is a novel high-efficiency sewage treatment process combining a high-efficiency membrane separation technology with a traditional activated sludge process, and is characterized in that an MBR flat membrane component with a unique structure is arranged in an aeration tank, and water after aerobic aeration and biological treatment is pumped out after being filtered by a filter membrane through a pump. MBR sewage treatment has a great difference with the traditional sewage treatment method, and a secondary sedimentation tank and a tertiary treatment process in the traditional process are replaced by a membrane separation device. Thereby obtaining high-quality effluent and solving the problem that the effluent quality of the sewage treatment by the traditional environmental protection equipment can not meet the requirement of reclaimed water reuse. The water treated by the MBR sewage can be directly used as municipal water or used for further treating various industrial water.

The solid-liquid separation capacity of the system is greatly improved due to the existence of the MBR membrane, so that the effluent, the water quality and the volume load of the MBR membrane bioreactor are greatly improved, and the water quality standard after membrane treatment is high (exceeding the national first-grade A standard). Due to the filtering action of the membrane, microorganisms are completely trapped in the MBR membrane bioreactor, so that the hydraulic retention time and the sludge age of the activated sludge are completely separated, and the sludge bulking problem in the traditional activated sludge method is eliminated.

Optionally, an oxygen-poor cavity is further arranged on the box body, the oxygen-poor cavity is arranged between the anaerobic cavity and the aerobic cavity, and a connecting branch pipe communicated with the oxygen-poor cavity is arranged on the nitrification return pipe.

Optionally, the box body is further provided with a water inlet and an overflow port.

Optionally, the connecting water pipe is further provided with a water inlet branch pipe, and the water inlet branch pipe is communicated with a storage device of the chemical liquid medicine.

Optionally, the blower is connected with an aeration tank through an air inlet pipe, and the aeration tank is arranged below the MBR membrane module.

Optionally, an ultraviolet sterilizer is further disposed on the connecting water pipe, and the ultraviolet sterilizer includes a connecting pipe, an upper blocking piece disposed on an inner wall of the connecting pipe, a lower blocking piece disposed on an inner wall of the connecting pipe, a rotating column disposed in the middle of the connecting pipe, a valve plate disposed on the rotating column, a germicidal lamp disposed on the rotating column, and a rotating sleeve disposed on the rotating column; the rotating sleeve is connected with the rotating column through a connecting rod, and an arc-shaped opening through which the connecting rod penetrates is formed in the connecting pipe.

Optionally, the rotating column is arranged in a hollow manner, the germicidal lamp is screwed on the rotating column, the rotating column is arranged in a hollow manner, and the hollow portion is provided with quartz glass.

Optionally, the upper blocking piece and the lower blocking piece are both fan-shaped, a valve plate arrangement space is arranged between the upper blocking piece and the lower blocking piece, and an opening is formed between the two upper blocking pieces.

Optionally, the valve plate is provided with a plurality of, and two adjacent valve plates are the staggered arrangement.

Drawings

Fig. 1 is a schematic diagram of the principle of the present invention.

Fig. 2 is a plan view of the case of fig. 1.

Fig. 3 is a perspective view of the uv sterilizer of fig. 1.

Fig. 4 is a front view of fig. 3.

Fig. 5 is a cross-sectional view taken at a-a in fig. 4.

Fig. 6 is an exploded view of fig. 3.

Fig. 7 is an exploded view of the trigger assembly.

Fig. 8 is a perspective view of the lock release lever and the stopper.

FIG. 9 is a cross-sectional view of the pressure sensing assembly.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

The utility model provides a MBR integration sewage treatment plant, includes box 1, locates MBR subassembly 2 in the box, locate oxygen deficiency chamber 11 in the box, locate good oxygen chamber 12 in the box, with the fan that box 1 is linked together, with the water pump 13 that box 1 is linked together and with the outlet pipe 14 that water pump 13 is linked together, still be provided with ultraviolet disinfector on the outlet pipe 14.

Specifically, the box body 1 is further divided into an anaerobic chamber 10, the anaerobic chamber 10, an anoxic chamber 11 and an aerobic chamber 12 are sequentially arranged, wherein a nitrification return pipe 11a is arranged on the box body, one end of the nitrification return pipe 11a is communicated with the anaerobic chamber 10, the other end of the nitrification return pipe is communicated with the aerobic chamber 12, a connecting branch pipe 111a is further arranged on the nitrification return pipe 11a, and the connecting branch pipe 111a is communicated with the anoxic chamber 11.

The box body is also provided with a sludge return pipe 12a, one end of the sludge return pipe 12a is communicated with the aerobic cavity 12, and the other end is communicated with the anaerobic cavity 10. A sludge return pump 121a may be provided on the sludge return pipe 12a to pump the sludge.

The water pump 13 is communicated with the MBR assembly 2 through a connecting water pipe 13a, and the fan is communicated with the aerobic cavity 12 on the box body 1 through an air inlet pipe 14 a.

Specifically, the MBR module is composed of a plurality of MBR flat membrane modules, and the NBR flat membrane modules isolate corresponding filtering spaces in the aerobic chamber 12, so that the connecting pipe 13a and the isolated spaces of the MBR flat membrane modules are communicated with each other.

When the water pump 13 is started, the internal liquid entering the connecting water pipe 13a is filtered by the MBR flat membrane.

Furthermore, in order to increase the treatment effect in the anoxic tank, the anoxic tank is also connected with a chemical phosphorus removal device 15 a.

Further, the principle of the present invention is as follows.

The box body 1 is also provided with a water inlet 11b and an overflow port 12b, the water inlet 11b and the overflow port 12b are connected with a regulating tank, a large amount of liquid to be treated is conveyed in the regulating tank, and the water inlet 11b and the overflow port 12b are communicated with the anaerobic cavity 10 a; a submersible sewage pump is usually provided in the conditioning tank, and sewage to be treated is conveyed into the anaerobic tank through the submersible sewage pump, and the overflow port 12b can return excessive liquid.

After the sewage to be treated enters the tank 1, the treatment process is as follows.

Step 1: after the sewage to be treated enters the anaerobic cavity 10a, phosphorus-containing bacteria in the anaerobic cavity 10a are suppressed under anaerobic regulation to release the phosphorus-containing bacteria in the body, and energy is generated to absorb and rapidly degrade organic matters and is converted into PHB (poly beta hydroxybutyrate) for storage.

Step 2: after reacting for a period of time in the anaerobic chamber 10a, the sewage overflows into the aerobic chamber for aerobic treatment. Organic acid and ammonia nitrogen are converted into nitrate through nitration reaction; the organic matters are further adsorbed, degraded and removed by microorganisms; phosphorus is taken up by the phosphorus accumulating bacteria in a large amount, and finally the purpose of phosphorus removal is achieved through sludge discharge. Namely, when entering aerobic condition, the phosphorus-accumulating bacteria degrade PHB stored in vivo to generate energy for cell synthesis and phosphorus absorption, form high-concentration sludge and discharge the sludge out of the system along with residual sludge, thereby achieving the aim of final phosphorus removal. Meanwhile, the soluble organic matters are also absorbed and degraded by the microorganisms in the anoxic tank, so that the COD concentration of the sewage is reduced. In order to enhance the dephosphorization effect of the wastewater, an integrated chemical dephosphorization device can be additionally arranged.

And 3, after reacting in the aerobic tank for a period of time, the liquid in the aerobic tank flows back to the anaerobic cavity 10 and the anoxic cavity 11, and denitrification reaction is generated under the anoxic condition, and nitrifying bacteria can reduce nitrate and nitrite in the nitrifying liquid flowing back to the anaerobic cavity 10 and the anoxic cavity 11 to nitrogen so as to reduce the total nitrogen.

Further, sludge is generated in the aerobic chamber 12, the anaerobic chamber 10 and the anoxic chamber 11, so that a plurality of sewage discharge ports are formed in the tank body 1.

Further, the MBR membrane module is a key device for obtaining clean liquid according to the present invention, and needs to be cleaned periodically, and therefore, a water inlet branch pipe 131a is further provided on the connection water pipe 13a, and the water inlet branch pipe 131a is connected with chemical liquid.

Further, the fan 14b is connected with an aeration tank, the aeration tank is arranged below the MBR membrane module, and under the action of the fan 14b, cross-flow aeration can be formed, the membrane surface is washed vertically, and the pollution period of the flat membrane MBR is delayed. Under the normal operating condition, the interval period for cleaning the MBR flat membrane module is generally 1-3 months, and the membrane pollution degree is judged by a vacuum pressure transmitter on the suction pipeline. Once the vacuum level is higher than the set upper limit, i.e., the transmembrane pressure difference (TMP) rises to a certain extent, the set of flat membrane modules needs to be chemically cleaned. The purpose of membrane cleaning is to remove the pollution layer on the surface of the filter membrane and recover the water flux of the filter membrane.

Specifically, when the MBR membrane module needs to be cleaned, all clean water in the box body 1 is removed, the water inlet branch pipe 131a is opened, and a chemical cleaning agent is delivered into the aerobic chamber 12 through the water inlet branch pipe 131a, so that chemical cleaning is performed in a static soaking manner.

The ultraviolet sterilizer 60 is integrated on the water pipe, and can sterilize bacteria in the water body by ultraviolet rays. The ultraviolet sterilizer includes a connection tube 3, a plurality of barrier ribs 31 provided on an inner wall of the connection tube 3, a rotation post 32 provided in the middle of the connection tube 3, a valve plate 33 provided on the rotation post 32, a germicidal lamp 34 provided on the rotation post 32, and a rotation sleeve 35 provided on the rotation post 32.

Wherein, the end and the tail end of the connecting pipe 3 are provided with flange connecting pipe ports, and the connecting pipe 3 can be arranged on the water outlet pipe through the flange connecting ports.

The rotating column 32 is a hollow tube body, the germicidal lamp 34 comprises a lamp tube 34 and a lamp bead arranged in the lamp tube 34, a connecting seat 342 is arranged at the end of the lamp tube 341, the connecting seat 342 is in threaded connection with the end of the rotating column 32, the side wall portion of the rotating column 32 is in hollowed-out arrangement, the hollowed-out portion is connected with quartz glass, and after the germicidal lamp 34 is started, the hollowed-out portion of the rotating column 32 can transmit ultraviolet rays.

The problem of excessively high liquid flow rates is generally overcome by using ultraviolet rays to sterilize flowing liquid, and generally, the whole flow channel is arranged in a zigzag shape to increase the flowing distance of the liquid in an ultraviolet radiation area, so that the sterilization effect is increased.

To this end, the present invention provides the following structure.

The rotating column 32 is connected with the rotating sleeve 35 through the connecting rod 321, an arc opening for the connecting rod 321 to pass through is arranged on the connecting pipe 3, the width of the arc opening is larger than that of the connecting rod 321, and the rotating sleeve 35 can drive the rotating column 32 to rotate.

Further, the blocking piece 31 is provided in a fan shape, the blocking piece is formed by two pieces as a group, a valve plate arrangement space 311 is formed between the two blocking pieces, and the blocking piece can be divided into an upper blocking piece 31a and a lower blocking piece 31 b.

Thus, the liquid entering the connecting tube 3 can only flow down along the openings 310 on both sides of the blocking piece 31 under the limit of the blocking piece 31.

The valve plate 33 is disposed on the side of the rotary column 32, the valve plate 33 is provided with a plurality of valve plates 33, the plurality of valve plates 33 are arranged at intervals 331, and the valve plates 331 are clamped in the valve plate arrangement space 311. When the connecting column 32 rotates, the valve plate 33 covers the opening 310 on one side of the blocking plate 31, because the valve plates 33 are arranged in a staggered manner, the adjacent valve plates 33 cover the opening 310 on the opposite side, so that the direction of the liquid flowing in the connecting tube 3 can spirally flow by using the connecting column 32 as the center of a circle, the moving distance of the liquid in the connecting tube 3 can be prolonged, and the sterilizing effect is increased.

Further, the rotating sleeve 35 can extend the moving distance of the liquid in the connecting pipe 3 after rotating the valve plate 33, but it can reduce the final water discharging speed and increase the pressure of the liquid 3 in the connecting pipe 3.

For this reason, a pressure relief device is provided on the connection piece 31, so that after the pressure of the liquid in the connection pipe 3 is increased to a certain strength, the drainage speed in the connection pipe 3 can be increased by the pressure relief device.

Specifically, the pressure relief device comprises a water outlet 41a arranged on the upper connecting piece 31a, a baffle 42 arranged on the water outlet 41, a starting plate 43 arranged below the baffle 42, a trigger assembly arranged below the baffle 42, a pressure relief port 41b arranged on the lower connecting piece 31b, and a flap 44 arranged on the pressure relief port 41 b.

Specifically, the edge of the pressure relief opening 41b is provided with a protrusion, the flap 44 and the pressure relief opening 41b are hinged through a hinge column, a coil spring is arranged on the hinge column, and under the action of the coil spring, the flap 44 is turned upwards to abut against the protrusion, so that the flap 44 can seal the pressure relief opening.

The baffle 42 is provided with a plurality of drainage holes, the starting plate 43 and the baffle 42 are connected through springs, the starting plate 43 is provided with a plurality of cylinders 421, the cylinders 431 and the drainage holes 421 are matched with each other, so that the cylinders 431 and the drainage holes 421 are matched with each other under the pulling of the springs, and one side of each cylinder 431 is also provided with a hole 432.

Further, a pressure sensing assembly is connected to the actuating plate 43, and when the pressure of the liquid in the connecting pipe 3 increases, the pressure sensing assembly pushes the actuating plate 43 to move downwards to actuate the trigger assembly.

Specifically, when the activation plate 43 is moved downward, the drain hole 421 is opened, and the liquid introduced into the drain hole 421 can flow out of the hole 432.

Further, the triggering assembly includes a fixed shell 51, a triggering tenon 53 connected with a first spring 52 and a second spring 52 connected with the fixed shell 51, a limit block 54 arranged on the side wall of the fixed shell 51, a third spring 55 connected with the limit block 54, a fourth spring 541 arranged on the triggering tenon 53, and an unlocking lever 545 connected with the fourth spring 541.

Wherein the fixed case 51 is disposed below the actuating plate 43, the first spring 52 pushes the trigger tenon 53 to move downward, and when the valve plate 33 is disposed between the upper fixing piece 31a and the lower fixing piece 32a, the trigger tenon 53 is retracted within the fixed case 51.

After the valve plate 33 is moved out, the first spring 52 pushes the trigger tenon 53 to move downwards, and then the trigger tenon 53 can push the turnover plate 44 away.

Specifically, the upper end surface of the limiting block 54 is provided with a first inclined surface 541, the triggering tenon block 53 can be abutted to the limiting block 54 after passing through the first inclined surface 541, and at the moment, the whole triggering tenon block 53 is integrated with the fixed shell 51. When the fixed shell 51 moves downwards under the pushing of the starting plate 43, the trigger tenon 53 pushes the turning plate 44 to move downwards, and the turning plate 44 is pushed away.

Therefore, the relief device is activated after the valve plate is rotated away from between the upper and lower fixing pieces 31a and 32 a.

Further, a through groove 531 is formed in the middle of the locking tenon block 53, the fourth spring 541 is connected to the top end inner wall of the through groove 531, the unlocking lever 545 includes a push rod 5451 and a slant rod 5452, the slant rod 5452 is disposed along the inclined portion of the fixing tenon block 53, and the push rod 5451 protrudes from the through groove 531.

When the valve plate 33 is reset, the valve plate 533 will push the inclined plane of the inclined rod 5452, and further push the unlocking rod 545 to move upwards;

further, the lower end of the stop block 54 is provided with a slope 5440 corresponding to the push rod 5451 on the unlocking rod 544. Since the push rod 5451 is a portion of the lock release lever 545 pushed out, the inclined surface 5440 can be touched.

Further, the pressure sensing assembly is used to push the actuating plate 43 downward, which provides a pushing force mainly according to the pressure change in the connection pipe 1. This technique is a conventional mechanism, and the present embodiment provides the following technical teaching.

The pressure sensing assembly at least comprises an open container 103 and a piston 102 arranged in the open container 103, the piston 102 and the inner wall of the open container 103 are sealed with each other, high-pressure gas is filled in a space 101 between the piston 102 and the open container 103, a rod body 1021 is arranged on the piston 102, the rod body 1021 penetrates through the bottom end of the open container 103, the rod body 1021 is used for being abutted against a starting plate, and therefore after the water pressure in the connecting pipe 3 is increased, the piston 102 can be extruded, and the rod body 1021 can push the starting plate 43.

It is to be understood that the described embodiments are merely a few embodiments of the utility model and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Claims (9)

1. an MBR integrated sewage treatment device, is characterized in that, comprises the box body, the anaerobic cavity that is arranged in the box body, the aerobic cavity that is arranged in the box body, the MBR membrane module that is arranged in the described aerobic cavity, The connecting water pipe connected with the MBR membrane assembly, the water pump arranged on the connecting water pipe, the air inlet pipe arranged on the bottom end of the box body, the fan arranged on the air inlet pipe, the air pump arranged on the box body A nitrification return pipe and a sludge return pipe arranged on the box body, wherein one end of the nitrification return pipe is communicated with the aerobic chamber, and the other end is communicated with the anaerobic chamber; the sludge returns One end of the tube is communicated with the aerobic chamber, and the other end is communicated with the anaerobic chamber. 2. The MBR integrated sewage treatment device according to claim 1, wherein an oxygen-deficient chamber is further provided on the box body, and the anoxic chamber is arranged in the anaerobic chamber and the Between the oxygen chambers, the nitrification return pipe is provided with a connecting branch pipe that communicates with the anoxic chamber. 3 . The MBR integrated sewage treatment device according to claim 1 , wherein the box body is further provided with a water inlet and an overflow. 4 . 4 . The MBR integrated sewage treatment device according to claim 1 , wherein the connecting water pipe is further provided with a water inlet branch pipe, and the shown water inlet branch pipe is in communication with the storage device for chemical liquid. 5 . 5 . The MBR integrated sewage treatment device according to claim 1 , wherein the fan is connected with an aeration box through an air inlet pipe, and the aeration box is arranged below the MBR membrane assembly. 6 . 6. a kind of MBR integrated sewage treatment device according to claim 1, is characterized in that, is also provided with ultraviolet sterilizer on described connecting water pipe, and described ultraviolet sterilizer comprises connecting pipe, is arranged on the connecting pipe inner wall. The upper blocking piece, the lower blocking piece arranged on the inner wall of the connecting pipe, the rotating column arranged in the middle of the connecting pipe, the valve plate arranged on the rotating column, the germicidal lamp arranged on the rotating column and the A rotating sleeve; the rotating sleeve and the rotating column are connected by a connecting rod, and the connecting pipe is provided with an arc-shaped opening through which the connecting rod passes. 7 . The MBR integrated sewage treatment device according to claim 6 , wherein the rotating column is hollow, the germicidal lamp is screwed on the rotating column, and the rotating column is hollow. 8 . , the hollow part is provided with quartz glass. 8. The MBR integrated sewage treatment device according to claim 6, wherein the upper blocking sheet and the lower blocking sheet are both fan-shaped, and the space between the upper blocking sheet and the lower blocking sheet A valve plate arrangement space is provided, and an opening is provided between the two upper blocking sheets. 9 . The MBR integrated sewage treatment device according to claim 8 , wherein a plurality of valve plates are provided, and two adjacent valve plates are arranged in a staggered manner. 10 .

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