CN210764573U - Sewage treatment device with backflow stabilization control function - Google Patents
Sewage treatment device with backflow stabilization control function Download PDFInfo
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- CN210764573U CN210764573U CN201921133198.5U CN201921133198U CN210764573U CN 210764573 U CN210764573 U CN 210764573U CN 201921133198 U CN201921133198 U CN 201921133198U CN 210764573 U CN210764573 U CN 210764573U
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- 230000006641 stabilisation Effects 0.000 title claims abstract description 15
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Abstract
The utility model discloses a sewage treatment device with a backflow stabilization control function, which comprises a device body, wherein the top of the device body is provided with an access hole, one end of the device body is provided with a water inlet, one side of the device body is provided with an air inlet pipe, and the air inlet pipe comprises an air inlet main pipe and an L-shaped air inlet branch pipe; the device body is inside through first baffle, the second baffle, the third baffle divide into the equalizing basin, the anoxic zone, anaerobic zone and MBR membrane cisterna, be provided with MBR membrane device and level control device in the MBR membrane cisterna, MBR membrane device is provided with L type air inlet branch pipe, L type air inlet branch pipe vertical section is connected with the person in charge that admits air through the ball valve, the person in charge that admits air is connected with outside air pump, L type air inlet branch pipe horizontal segment is installed in MBR membrane device bottom, and be provided with scattered gas pocket, MBR membrane device's upper portion is provided with produces the water pipe. The utility model discloses a set up liquid level control device in MBR membrane cisterna district, make this device have that the liquid level is undulant little, the backward flow is stable, and consumption of power is low, goes out the stable up to standard advantage of water quality of water.
Description
Technical Field
The utility model relates to a sewage treatment technical field especially relates to a sewage treatment plant with backward flow stable control effect.
Background
The Membrane Bioreactor (MBR) is an efficient sewage treatment technology, has the advantages of good effluent quality, high volume load, small occupied area, small sludge production, strong load impact resistance and the like, and is widely applied to the field of sewage treatment. However, in the dispersed daily sewage treatment and small industrial sewage application scenes of schools, hospitals, hotels, scenic spots and the like, the sewage amount is relatively small, and is generally 10m3/d～150m3The/d is relatively common. In the application of the membrane bioreactor in these scenes, on the one hand, the liquid level control of the membrane pool usually adopts a cableThe liquid level control method of the float switch has the problems of overlarge swing amplitude of the float switch and poor liquid level control stability, and under the condition of the same air quantity, the lower the liquid level is, the smaller the backflow quantity is, the higher the liquid level is, and the larger the backflow quantity is, so that the float switch is easy to cause large backflow quantity fluctuation, thereby influencing the total nitrogen removal effect; on the other hand, the air-stripping regulating valve of the membrane bioreactor usually adopts a needle valve to regulate air flow, and the needle valve has the defects of large power consumption, energy waste, high operation cost and the like due to small air hole diameter, large air resistance and air loss and insufficient aeration and oxygenation capacity of a membrane pool.
A novel high-efficiency sludge reflux raiser disclosed in the patent document with the Chinese patent publication No. CN205616639U is provided with a lifting pipe, a bell mouth, an air inlet pipe and a flow stabilizing cylinder; the main effect of a stationary flow section of thick bamboo is a small amount of backward flow mud of accumulation, guarantees to go out from stationary flow bobbin base portion backward flow mud and is full of whole back flow, can play certain buffering, stabilizing action in the short time, nevertheless to the membrane cisterna that adopts the cable floater, the liquid level fluctuation time is usually in 0.5 ~ 4 hours, at this moment, under the certain condition of air supply volume, the backward flow mud volume of promotion can be along with the rising or decline of liquid level and grow or diminish, the stationary flow section of thick bamboo can't play the stationary flow effect.
In the air stripping system for sludge backflow in sewage treatment engineering disclosed in the patent document with Chinese patent publication No. CN206783502U, the device is provided with a lifting pipe, a bell mouth and an air pipe, but the liquid level control is not arranged in the tank of the device, and when the device is applied to a membrane tank of a membrane bioreactor, the backflow amount cannot be stabilized by controlling the liquid level in time.
The high-concentration sludge backflow system of the biological treatment system disclosed in the patent document with the Chinese patent publication number of CN208394989U comprises a biological tank, a secondary sedimentation tank and a sludge backflow concentration tank; a sludge reflux pump room is arranged between the sludge reflux concentration tank and the biological tank, and the sludge is lifted and refluxed to the biological tank by a pump power device.
In conclusion, when the traditional modes of pumping a reflux system, a flow stabilizing barrel device, a pure air stripping system, a common cable floating ball and the like are applied to the liquid level control of a membrane pool of a small-sized sewage treatment device with a membrane bioreactor, the defects of high power consumption cost, large liquid level fluctuation range, unstable reflux, substandard effluent quality total nitrogen and the like exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the sewage treatment device with the backflow stability control function has the advantages of small liquid level fluctuation, stable backflow, low power consumption and stable and standard effluent quality.
In order to realize the purpose of the utility model, the utility model discloses a technical scheme as follows:
a sewage treatment device with a backflow stabilization control function comprises a device body, wherein an access hole is formed in the top of the device body, a water inlet is formed in one end of the device body, and an air inlet pipe is arranged on one side of the device body; the air inlet pipe comprises an air inlet main pipe and an L-shaped air inlet branch pipe; the device body is inside to be divided into equalizing basin, anoxic zone, anaerobic zone and MBR membrane cisterna through first baffle, second baffle, third baffle, be provided with MBR membrane device and level control device in the MBR membrane cisterna, MBR membrane device is provided with L type air inlet branch pipe, L type air inlet branch pipe vertical section is responsible for with admitting air through the ball valve and is connected, admits air and is responsible for and is connected with outside air pump, L type air inlet branch pipe horizontal segment is installed in MBR membrane device bottom to be provided with scattered gas pocket, MBR membrane device's upper portion is provided with produces the water pipe, the other end of producing the water pipe is connected with outside self priming pump.
Preferably, the liquid level control device comprises a sludge lifting system, a return pipe, a liquid level control pipe and a liquid level control line, the sludge lifting system comprises a sludge suction pipe and an air stripping pipe, the sludge suction pipe is arranged at the bottom of the MBR membrane pool area, the air stripping pipe is vertically arranged, one end of the air stripping pipe is connected with the sludge suction pipe, the other end of the air stripping pipe is connected with the water inlet end of the return pipe, and the water outlet end of the return pipe extends to the anoxic area; the utility model discloses a portable gas lift pipe, including a gas lift pipe, a liquid level control pipe, a stainless steel probe, a liquid level control line, a plastic ball valve, a liquid level control pipe, a liquid level.
Preferably, the liquid level control line comprises a high level line, a middle level line and a low level line, the middle of the liquid level control pipe is provided with a high level hole, a middle level hole and a low level hole, and the high level line, the middle level line and the low level line respectively penetrate out of the high level hole, the middle level hole and the low level hole of the liquid level control pipe and penetrate out of the liquid level control pipe by 10-30 mm. The three stainless steel probes of the high-level line, the middle-level line and the low-level line are T-shaped in the horizontal arrangement direction of the liquid level control tube. The design can prevent the liquid level control from being failed due to the winding of the three stainless steel probes.
Preferably, the aperture of the high-position hole, the aperture of the middle-position hole and the aperture of the low-position hole are 15-25mm, and the height difference between the high-position hole and the low-position hole is less than or equal to 100 mm.
Preferably, the mud suction pipe comprises a transverse mud suction pipe and a longitudinal mud suction pipe which are vertically arranged, mud suction holes are arranged on the mud suction pipe every 100-300mm, the aperture of each mud suction hole is 8-16mm, and the end of the mud suction pipe is provided with a plug. Under the action of air stripping, the sludge can be lifted to the return pipe through the sludge suction holes.
Preferably, the return pipe is provided with an exhaust hole and a rotatable tee joint, and the aperture of the exhaust hole is 8-25 mm. The exhaust hole can avoid the formation of a vacuum area in the return pipe, has good effect on the stable control of the return, and the rotatable tee joint can regularly monitor the return flow of the system.
Preferably, overflow weirs are respectively arranged on two sides of the upper end of the first partition plate, and a first water through hole and a second water through hole are respectively arranged in the middle positions of the upper ends of the second partition plate and the third partition plate; and baffle plates are arranged at the second partition plate and the third partition plate. The bottoms of the first partition plate, the second partition plate and the third partition plate are fixed at the bottom of the device body by glue.
Preferably, the water outlet end of the return pipe is immersed below the liquid level when in use, and the immersion depth is 100-300 mm. Can avoid the backflow sludge from forming a water drop effect, which causes the over-high dissolved oxygen in an anoxic or anaerobic zone and influences the denitrification.
Preferably, the outer diameter of the air inlet pipe is 15-32mm, the air inlet pipe is made of PVC-U, the horizontal section of the L-shaped air inlet branch pipe is installed at the bottom of the MBR membrane device and is provided with a plurality of air diffusing holes, the aperture of each air diffusing hole is 1-5mm, and each air diffusing hole is arranged at the length of 80-120 mm; after the gas penetrates out of the gas diffusion holes, the outer surface of the MBR membrane can be continuously washed, and the influence on the flux of the membrane and the service life caused by the accumulation of sludge is avoided.
Preferably, the MBR membrane device is fixed in the MBR membrane pool area through the support frame. The support frame is fixed at the bottom of the device body through glue.
The utility model discloses a plastics ball valve, liquid level control pipe and liquid level control line form holistic liquid level control system, can ensure that the mud backward flow volume is undulant be less than or equal to 50%, goes out water total nitrogen and accords with "urban sewage treatment plant pollutant discharge standard" (GB18918-2002) one-level A standard.
To sum up, owing to adopted above-mentioned technical scheme, the utility model discloses compare with modes such as traditional pumping reflux system, stationary flow bobbin installation, simple air lift system, ordinary cable floater, have following beneficial effect:
(1) the utility model discloses a sewage treatment device is provided with an adjusting tank, an anoxic zone, an anaerobic zone and an MBR membrane pool zone, sewage enters the MBR membrane pool zone after passing through the anoxic zone and the anaerobic zone, and generates an oxygenation effect under the action of aeration, aerobic bacteria generate nitrification under the condition of higher dissolved oxygen value, ammonia nitrogen is converted into nitrate, and organic matters are decomposed at the same time, so that the quality of effluent water is ensured; through set up liquid level control device in MBR membrane cisterna district, make sewage treatment plant have that the liquid level is undulant little, the backward flow is stable, and power consumption is low, goes out the stable up to standard advantage of water quality.
(2) The utility model discloses a liquid level control line that uses among the liquid level control device divide into high-order control line, meso position control line and low level control line, and high-order control line and meso position control line altitude difference control are being less than or equal to 100mm, and the fluctuation of liquid level is in the 100mm within range, and the liquid level fluctuation range of traditional cable floater is usually between 250 and 800mm, has avoided the too big problem of liquid level fluctuation range of traditional cable floater.
(3) The utility model discloses three liquid level control line probe one ends of device adopt stainless steel, and corrosion resisting property is good, long service life, and liquid level signal feedback is sensitive, separately sets up the back and does not twine, can realize the accurate control of accurate liquid level to guarantee the stability of mud backward flow, the backward flow volume is undulant less than or equal to 50%, and the liquid level control method of traditional cable floater, the backward flow volume is undulant usually is being more than or equal to 200%.
(4) The plastic ball valve adopted by the device can finely adjust the air quantity according to the process requirement; the defects of large power consumption, energy waste, high operation cost and the like caused by large air resistance and air loss of the traditional needle valve and insufficient aeration and oxygenation capacity of the membrane tank are avoided.
(5) The utility model discloses the back flow that the device adopted goes out the water end submergence below the liquid level, avoids backward flow mud to form the drop effect, leads to oxygen deficiency or anaerobic zone dissolved oxygen too high, influences the denitrification.
Drawings
FIG. 1 is a schematic structural view of a sewage treatment apparatus with a backflow stabilization control function according to the present invention;
FIG. 2 is a schematic structural view of the liquid level control device of the present invention;
FIG. 3 is an enlarged view taken at A in FIG. 1;
FIG. 4 is a schematic plan view of the liquid level control tube and the liquid level control line of the present invention;
in the figure, 101-a device body, 102-a water inlet, 103-an overflow weir, 104-a manhole, 105-a baffle plate, 106-a first water passing hole, 107-a second water passing hole, 108-a water production pipe, 109-an MBR membrane device, 110-a support frame, 111-a third clapboard, 112-a second clapboard, 113-a first clapboard, 1-a return pipe, 2-a rotatable tee joint, 3-an exhaust hole, 4-an air inlet pipe, 401-an air inlet main pipe, 402-L type air inlet branch pipe, 5-a plastic ball valve, 6-a liquid level control pipe, 7-a liquid level control line, 701-a low level line, 702-a high level line, 703-a middle level line, 8-a sludge lifting system, 801-a sludge suction pipe, 802-a sludge suction pipe, 9-a sludge suction hole, 10-plug, 11-stainless steel probe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following description will be given of preferred embodiments and further detailed description of the present invention. It should be understood, however, that the numerous specific details set forth in the specification are merely set forth to provide a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
Example 1
As shown in fig. 1, the sewage treatment device with backflow stabilization control function of the present invention comprises a device body 101, wherein the top of the device body 101 is provided with a manhole 104, one end of the device body 101 is provided with a water inlet 102, one side of the device body 101 is provided with an air inlet pipe 4, and the air inlet pipe 4 comprises an air inlet main pipe 401 and an L-shaped air inlet branch pipe 402; the device body 101 is internally divided into an adjusting tank, an anoxic zone, an anaerobic zone and an MBR membrane pool zone through a first partition plate 113, a second partition plate 112 and a third partition plate 111, an MBR membrane device 109 and a liquid level control device are arranged in the MBR membrane pool zone, the MBR membrane device 109 is provided with an L-shaped air inlet branch pipe 402, the vertical section of the L-shaped air inlet branch pipe 402 is connected with an air inlet main pipe 401 through a ball valve, the air inlet main pipe 401 is connected with an external air pump, the horizontal section of the L-shaped air inlet branch pipe 402 is installed at the bottom of the MBR membrane device 109 and is provided with an air diffusing hole, the upper part of the MBR membrane device 109 is provided with a water production pipe, and the other end of the. Overflow weirs 103 are respectively arranged on two sides of the upper end of the first partition plate 113, and a first water passing hole 106 and a second water passing hole 107 are respectively arranged in the middle positions of the upper ends of the second partition plate 112 and the third partition plate 111. The bottoms of the first partition 113, the second partition 112 and the third partition 111 are fixed at the bottom of the device body 101 by glue. A baffle plate 105 is arranged on one side of the second partition plate 112 and the third partition plate 111; the MBR membrane device 109 is fixed in the MBR membrane pool area through the support frame 110, and the support frame 110 is fixed at the bottom of the device body 101 through glue.
As shown in fig. 2, the anaerobic sludge treatment system comprises a sludge lifting system 8, a return pipe 1, a liquid level control pipe 6 and a liquid level control line 7, wherein the sludge lifting system 8 comprises a sludge suction pipe 801 and an air stripping pipe 802, the sludge suction pipe 801 is arranged at the bottom of an MBR membrane pool area, the air stripping pipe 802 is vertically arranged, one end of the air stripping pipe 802 is connected with the sludge suction pipe 801, the other end of the air stripping pipe 802 is connected with a water inlet end of the return pipe 1, and a water outlet end of the return pipe 1 extends to an anoxic area; the utility model discloses a pneumatic vacuum pump, including gas lift pipe 802, liquid level control pipe 6, liquid level control pipe 802, stainless steel probe 11, and its 7 one end of liquid level control line that is provided with stainless steel probe 11 penetrate from 6 upper portions of liquid level control pipe to wear out from the trompil at 6 middle parts of liquid level control pipe.
Preferably, as shown in fig. 3-4, the liquid level control line 7 includes a high level line 702, a middle level line 703 and a low level line 701, the middle of the liquid level control tube 6 is opened with a high level hole, a middle level hole and a low level hole, and the high level line 702, the middle level line 703 and the low level line 701 respectively penetrate out of the high level hole, the middle level hole and the low level hole of the liquid level control tube 6 and penetrate out of the liquid level control tube 6 by 10-30 mm; the three stainless steel probes 11 of the high-level line 702, the middle-level line 703 and the low-level line 701 are T-shaped in the horizontal arrangement direction of the liquid level control pipe 6. The design can prevent the liquid level control from failing due to the winding of the three stainless steel probes 11; the aperture of the high-level hole, the aperture of the middle-level hole and the aperture of the low-level hole are 15-25mm, and the height difference between the high-level hole and the low-level hole is less than or equal to 100mm, so that the stability of backflow can be ensured. The liquid level control pipe 6 is mainly used for fixing a liquid level control line 7, one end of the liquid level control pipe 6 is fixed at the bottom of an MBR membrane pool of the sewage treatment device by glue during use, and the other end of the liquid level control pipe extends to an access hole. Preferably, the mud suction pipe 801 comprises a transverse mud suction pipe and a longitudinal mud suction pipe which are vertically arranged, mud suction holes 9 are arranged on the mud suction pipe 801 every 100-300mm, the aperture of each mud suction hole 9 is 8-16mm, and a plug 10 is arranged at the end of the mud suction pipe 801. Under the action of air stripping, the sludge can be lifted to the return pipe 1 through the sludge suction holes 9; the gas stripping pipe 802 is made of PVC or PVC-U, the outer diameter of the gas stripping pipe 802 is 32-63mm, a plastic ball valve with the outer diameter of phi 20-32mm is arranged on the gas inlet pipe 4, and quantitative gas can be introduced and adjusted according to process requirements; the backflow pipe 1 is provided with an exhaust hole 3 and a rotatable tee joint 2, and the aperture of the exhaust hole 3 is 8-25 mm. The exhaust hole 3 can avoid the formation of a vacuum area in the return pipe 1, has good effect on the stable control of the return, and the rotatable tee joint 2 can regularly monitor the return flow of the system; the return pipe 1 comprises a water inlet end and a water outlet end, the water inlet end of the return pipe 1 is connected with the upper end of the gas stripping pipe 802, the water outlet end of the return pipe 1 is immersed below the liquid level when in use, and the immersion depth is 100-300 mm. Can avoid the backflow sludge from forming a water drop effect, which causes the over-high dissolved oxygen in an anoxic or anaerobic zone and influences the denitrification.
The utility model discloses a plastic ball valve 5, liquid level control pipe 6 and liquid level control line 7 form holistic liquid level control system, can ensure that the mud backward flow volume is undulant be less than or equal to 50%, goes out water total nitrogen and accords with urban sewage treatment plant pollutant emission standard (GB18918-2002) one-level A standard.
The utility model discloses a working process does:
sewage enters a regulating tank of the device body through a water inlet, overflows into an anoxic zone through overflow weirs arranged on two sides of the upper end of a first partition plate, a sewage carbon source is sufficient, sludge biomass is high, denitrification is performed in the anoxic zone, most of nitrate in the sewage is removed, the total nitrogen removal effect is ensured, after the set hydraulic retention time, the sewage enters an anaerobic zone from a first water through hole in the upper part through a baffle plate of a second partition plate, in the anaerobic zone, under the condition of keeping a low dissolved oxygen value, the sewage contains a certain carbon source and biomass, denitrification further occurs, and under the condition of low dissolved oxygen values of the anoxic zone and the anaerobic zone, the phosphorus release effect of phosphorus accumulating bacteria can be promoted;
sewage enters an MBR membrane pool area through a water hole at the upper end of a third partition plate, an external air pump respectively enters an air stripping pipe and a bottom air inlet of the MBR membrane pool area through the control of a valve arranged on an air inlet pipe, the air stripping pipe is filled with air to obtain an air-liquid mixture, the air-liquid mixture generates a lifting action due to low density to lift sludge mixed liquid in the MBR membrane pool area to a return pipe through the air stripping pipe, and the return pipe accurately controls air flow through a control plastic ball valve, so that the return flow can be stably controlled; the return pipe extends to the anaerobic zone and is immersed at a position below the liquid level of 100-; after a large amount of gas is introduced into a bottom gas inlet of the MBR membrane pool area, certain gas pressure is formed, a powerful scouring effect is formed on the membrane plate, and the MBR membrane is prevented from being blocked by sludge; the upper end of the MBR membrane is provided with a water production pipe which is connected with an external self-priming pump, when the self-priming pump is started, sludge is blocked in the membrane pool by the flat membrane, and water passes through micropores of the flat membrane and then enters the water production pipe and is discharged to an external drainage system through the self-priming pump; in order to avoid the problem that the MBR membrane is deformed due to strong water production pressure difference caused by long-time vacuum suction, the start-stop time of the self-priming pump is set to be intermittent, the starting is carried out for 8 minutes, and the stopping is carried out for 2 minutes;
after all parts and circuits are connected, after an external water inlet pump and an external water production pump are started, when the liquid level of an MBR membrane pool area reaches a liquid level control high-level line position, the liquid level is at a high level, a stainless steel probe liquid level signal is fed back to prompt the water inlet pump of an externally connected small-sized MBR sewage treatment device to be closed, the membrane pool water production pump is started, and the liquid level begins to descend; when the liquid level of the membrane pool reaches the position of the liquid level control median line 703, the liquid level is at a low level, at this time, a water inlet pump externally connected with the small-sized sewage treatment device with the MBR is prompted to be started, a water production pump of the membrane pool is closed, and the liquid level begins to rise; the operation is circulated in such a way; the height difference between the high line 702 and the medium line 703 is controlled to be less than or equal to 100mm, and the fluctuation of the liquid level is within the range of 100 mm;
after passing through the anoxic zone and the anaerobic zone, sewage enters the MBR membrane pool zone, an oxygenation effect is generated under the action of aeration, aerobic bacteria generate nitrification under the condition of a higher dissolved oxygen value, ammonia nitrogen is converted into nitrate, and the organic matters are decomposed by the same workers to ensure the quality of effluent.
To sum up, adopt the utility model discloses the device compares with modes such as traditional pumping reflux system, stationary flow bobbin installation, simple air stripping system, ordinary cable floater (below for test result and contrast cost rough calculation):
(1) the height difference between the high-level control line and the middle-level control line is controlled to be less than or equal to 100mm, and the fluctuation of the liquid level is within the range of 100 mm;
(2) the reflux stability is good, and the reflux ratio monitoring result is shown in the following table:
| date of monitoring | Set value of reflux ratio | Reflux ratio before implementation | Reflux ratio after implementation |
| 4 month and 3 days | 250％ | 83％ | |
| 4 months and 4 days | 250％ | 188％ | |
| 4 month and 5 days | 250％ | 330％ | |
| 4 month and 6 days | 250％ | 76％ | |
| 4 month and 7 days | 250％ | 404％ | |
| 4 month and 8 days | 250％ | 288％ | |
| 4 month and 9 days | 250％ | 50％ | |
| 4 month and 10 days | 250％ | 146％ | |
| 4 month and 11 days | 250％ | 410％ | |
| 4 month and 12 days | 250％ | 220％ | |
| 4 month and 20 days | 250％ | 230％ | |
| 4 month and 21 days | 250％ | 260％ | |
| 4 month and 22 days | 250％ | 240％ | |
| 4 month and 23 days | 250％ | 260％ | |
| 4 month and 24 days | 250％ | 250％ | |
| 4 month and 25 days | 250％ | 255％ | |
| 4 month and 26 days | 250％ | 220％ | |
| 4 month and 27 days | 250％ | 210％ | |
| 4 month and 28 days | 250％ | 240％ | |
| 4 month and 29 days | 250％ | 240％ |
As can be seen from the above, before the utility model is implemented, the reflux ratio fluctuation is more than or equal to 200% (the absolute value average value after subtracting the set value); the utility model discloses after the implementation, the backward flow ratio fluctuation is less than or equal to 50% (subtract the back absolute value average value with the setting value).
(3) The quality of the effluent water stably reaches the standard, and the analysis result of the total nitrogen sampling of the effluent water is shown in the following table:
the device can realize the accurate control of the liquid level, and avoid the unstable backflow and the influence on the total nitrogen removal effect caused by the overlarge liquid level fluctuation; and through adopting the plastics ball valve, guarantee that tolerance can finely tune to keep the stability of long period backward flow, realize unmanned on duty, save the maintenance cost, ensure sewage treatment device's steady operation.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a sewage treatment plant with stable control effect of backward flow which characterized in that: the device comprises a device body, wherein the top of the device body is provided with an access hole, one end of the device body is provided with a water inlet, one side of the device body is provided with an air inlet pipe, and the air inlet pipe comprises an air inlet main pipe and an L-shaped air inlet branch pipe; the device body is inside to be divided into equalizing basin, anoxic zone, anaerobic zone and MBR membrane cisterna through first baffle, second baffle, third baffle, be provided with MBR membrane device and level control device in the MBR membrane cisterna, MBR membrane device is provided with L type air inlet branch pipe, L type air inlet branch pipe vertical section is responsible for with admitting air through the ball valve and is connected, admits air and is responsible for and is connected with outside air pump, L type air inlet branch pipe horizontal segment is installed in MBR membrane device bottom to be provided with scattered gas pocket, MBR membrane device's upper portion is provided with produces the water pipe, the other end of producing the water pipe is connected with outside self priming pump.
2. The sewage treatment apparatus having a return flow stabilization control function according to claim 1, characterized in that: the liquid level control device comprises a sludge lifting system, a return pipe, a liquid level control pipe and a liquid level control line, wherein the sludge lifting system comprises a sludge suction pipe and an air stripping pipe, the sludge suction pipe is arranged at the bottom of the MBR membrane pool area, the air stripping pipe is vertically arranged, one end of the air stripping pipe is connected with the sludge suction pipe, the other end of the air stripping pipe is connected with the water inlet end of the return pipe, and the water outlet end of the return pipe extends to the anoxic area; the utility model discloses a portable gas lift pipe, including a gas lift pipe, a liquid level control pipe, a stainless steel probe, a liquid level control line, a plastic ball valve, a liquid level control pipe, a liquid level.
3. The sewage treatment apparatus having a return flow stabilization control function according to claim 2, characterized in that: the liquid level control line comprises a high level line, a middle level line and a low level line, a high level hole, a middle level hole and a low level hole are formed in the middle of the liquid level control tube, and the high level line, the middle level line and the low level line respectively penetrate out of the high level hole, the middle level hole and the low level hole of the liquid level control tube correspondingly and penetrate out of the liquid level control tube by 10-30 mm.
4. The sewage treatment apparatus having a return flow stabilization control function according to claim 3, characterized in that: the aperture of the high-level hole, the aperture of the middle-level hole and the aperture of the low-level hole are 15-25mm, and the height difference between the high-level hole and the low-level hole is less than or equal to 100 mm.
5. The sewage treatment apparatus having a return flow stabilization control function according to claim 2, characterized in that: the mud suction pipe comprises a transverse mud suction pipe and a longitudinal mud suction pipe which are vertically arranged, mud suction holes are arranged on the mud suction pipe every 100-300mm, the aperture of each mud suction hole is 8-16mm, and the end of the mud suction pipe is provided with a plug.
6. The sewage treatment apparatus having a return flow stabilization control function according to claim 2, characterized in that: the backflow pipe is provided with an exhaust hole and a rotatable tee joint, and the aperture of the exhaust hole is 8-25 mm.
7. The sewage treatment apparatus having a return flow stabilization control function according to claim 1, characterized in that: overflow weirs are respectively arranged on two sides of the upper end of the first partition plate, and a first water passing hole and a second water passing hole are respectively arranged in the middle positions of the upper ends of the second partition plate and the third partition plate; and a baffle plate is arranged on one side of the second partition plate and one side of the third partition plate.
8. The sewage treatment apparatus having a return flow stabilization control function according to claim 2, characterized in that: the water outlet end of the return pipe is immersed below the liquid level when in use, and the immersion depth is 100-300 mm.
9. The sewage treatment apparatus having a return flow stabilization control function according to claim 1, characterized in that: the outer diameter of the air inlet pipe is 15-32mm, the material is PVC-U, the aperture of the air diffusing hole is 1-5mm, and one air diffusing hole is arranged every 80-120 mm.
10. The sewage treatment apparatus having a return flow stabilization control function according to claim 1, characterized in that: the MBR membrane device is fixed in the MBR membrane tank area through the support frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921133198.5U CN210764573U (en) | 2019-07-18 | 2019-07-18 | Sewage treatment device with backflow stabilization control function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921133198.5U CN210764573U (en) | 2019-07-18 | 2019-07-18 | Sewage treatment device with backflow stabilization control function |
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| Publication Number | Publication Date |
|---|---|
| CN210764573U true CN210764573U (en) | 2020-06-16 |
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| CN201921133198.5U Active CN210764573U (en) | 2019-07-18 | 2019-07-18 | Sewage treatment device with backflow stabilization control function |
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| Country | Link |
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| CN (1) | CN210764573U (en) |
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Effective date of registration: 20211221 Address after: 530000 room 618, 6 / F, building 1 (Jinhai building), business center, Nanning comprehensive free trade zone, No. 20 Jinhai Road, Nanning area, China (Guangxi) pilot Free Trade Zone, Nanning, Guangxi Zhuang Autonomous Region Patentee after: Guangxi Kexin environmental treatment Co.,Ltd. Address before: No. 12, Kexing Road, high tech Zone, Nanning, Guangxi 530000 Patentee before: GUANGXI BOSSCO ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |
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Address after: 530000 No. 101, Gao'an Road, high tech Zone, Nanning, Guangxi Zhuang Autonomous Region Patentee after: Guangxi Boshike Environmental Technology Co.,Ltd. Address before: 530000 room 618, 6 / F, building 1 (Jinhai building), business center, Nanning comprehensive free trade zone, No. 20 Jinhai Road, Nanning area, China (Guangxi) pilot Free Trade Zone, Nanning, Guangxi Zhuang Autonomous Region Patentee before: Guangxi Kexin environmental treatment Co.,Ltd. |