CN211664907U

CN211664907U - Filtering pond and sewage treatment device

Info

Publication number: CN211664907U
Application number: CN201922123220.4U
Authority: CN
Inventors: 张宇恒; 朱志华; 王斌; 蒋涛
Original assignee: Jiangsu Xinyu Tiancheng Environmental Protection Co ltd
Current assignee: Jiangsu Xinyu Tiancheng Environmental Protection Co ltd
Priority date: 2019-12-02
Filing date: 2019-12-02
Publication date: 2020-10-13
Anticipated expiration: 2029-12-02

Abstract

The utility model discloses a filter tank, wherein a filter chamber is arranged in the filter tank, a filter layer is arranged in the filter chamber, a plurality of communicating pipes are arranged in the filter chamber, a pipeline communicated with liquid to be filtered is arranged in the filter chamber above the filter layer, and a water outlet is arranged above the filter chamber; a siphon backwashing pipe is arranged outside the filter tank and comprises a straight pipe section, a first bend pipe section and a second bend pipe section, wherein the straight pipe section is vertically arranged, and the first bend pipe section and the second bend pipe section extend from the straight pipe section; the second bend pipe section extends into the filter chamber above the filter layer. The siphon type backwashing pipe is arranged in the filter tank, and the clean water above the filter chamber is used for automatic backwashing, so that a backwashing water pump is omitted, the control mode is simplified, the working energy consumption and the noise pollution are reduced, and the operation cost is reduced. U type pipe and communicating pipe directly set up the position at the straining chamber of filtering ponds in the filtering ponds, and structural design is inseparabler, and occupation space is little, has further reduced the area of filtering ponds.

Description

Filtering pond and sewage treatment device

Technical Field

The utility model belongs to the technical field of sewage treatment technique and specifically relates to a filtering ponds and sewage treatment plant.

Background

Domestic sewage contains organic matters, inorganic matters, heavy metal pollutants, surfactants and the like, and the components of the domestic sewage are very complicated, so the domestic sewage is treated by adopting a combined treatment mode of a biological contact oxidation method and physicochemical treatment and disinfection. Chinese patent CN203728686U discloses an integrated domestic sewage treatment device, which comprises a hydrolysis acidification pool, a contact oxidation pool, a secondary sedimentation pool, a biological filter and a quartz sand filter which are connected in sequence, wherein the filtering areas of the biological filter and the quartz sand filter are positioned below the filtering pool, a backwashing device is arranged above the filtering area and comprises a reverse suction cover arranged above a filtering material, the backwashing water pump is fixed on the upper end surface of the reverse suction cover, a guide cylinder is connected with a backwashing water pump, the guide cylinder is connected with a bent pipe, the bent pipe is inserted into a backwashing water pipe, the reverse suction cover, the backwashing water pump, the bent pipe and the guide cylinder can move up and down through a spring, when more solid particles are intercepted in the filtering material, the backwashing water pump is started, negative pressure is generated in the reverse suction cover to suck out the pollution particles in the filtering material and flows out through the bent pipe and a backwashing water outlet pipe, but the device needs to install the backwashing water pump in the, make the whole great area that needs to occupy of filtering area, still need additionally to set up electrical control device in order to control the backwash water pump, lead to the filtering area structure complicacy, the backwash water pump power consumption is high and there is noise pollution.

SUMMERY OF THE UTILITY MODEL

The applicant aims at the defects of large occupied volume, complex structure, noise pollution and the like of the filtering area of the existing integrated domestic sewage treatment device, and provides a filtering tank and a sewage treatment device with reasonable structure.

The utility model discloses the technical scheme who adopts as follows:

a filtering pool is characterized in that a filtering chamber is arranged in the filtering pool, a filtering layer is arranged in the filtering chamber, a plurality of communicating pipes are arranged to penetrate through the filtering chamber, a pipeline communicated with liquid to be filtered is arranged in the filtering chamber above the filtering layer, and a water outlet is formed in the upper part of the filtering chamber; a siphon backwashing pipe is arranged outside the filter tank and comprises a straight pipe section, a first bend pipe section and a second bend pipe section, wherein the straight pipe section is vertically arranged, and the first bend pipe section and the second bend pipe section extend from the straight pipe section; the second bend pipe section extends into the filter chamber above the filter layer.

As a further improvement of the above technical solution:

a U-shaped pipe is arranged in the filtering tank, a water inlet pipe of the U-shaped pipe is communicated with liquid to be filtered, a water outlet pipe penetrates through the filtering layer, and the opening end of the water outlet pipe is positioned in the filtering chamber above the filtering layer.

The U-shaped pipe is positioned in the filtering pool, the water inlet pipe penetrates through the filtering chamber, and the bottom of the U-shaped pipe is positioned below the filtering chamber; the water inlet pipe and the water outlet pipe of the U-shaped pipe are long and short.

And a reverse suction cover is arranged at the bottom of the bent part of the second bent pipe section and is positioned in the middle above the filter layer.

The size of the filter chamber is matched with that of the filter tank, and the size of the filter layer is matched with that of the filter chamber.

And the water outlet pipe of the U-shaped pipe is positioned in the middle of the filtering layer.

The filtering layer is positioned at the lower part of the filtering chamber.

The first bend section extends into the filtering tank, and a siphon destroying pipe is arranged at the bottom of the first bend section.

The siphon break pipe is positioned higher than the filter chamber and lower than the through hole.

The utility model provides an use sewage treatment plant of above-mentioned filtering ponds, includes the oxygen deficiency biological reaction pond, good oxygen biological reaction pond, sedimentation tank, filtering ponds and the clean water tank of disinfecting that connect gradually, sets up the water inlet at oxygen deficiency biological reaction pond, and pipeline and sedimentation tank intercommunication in the filter chamber of filtering ponds, the delivery port and the clean water tank of disinfecting of filter chamber top are connected.

The utility model has the advantages as follows:

the utility model discloses set up hydrocone type backwash pipe in the filtering ponds, utilize the clean water of filter chamber top to carry out automatic back flush, saved backwash water pump's use, simplify control mode, reduce work energy consumption and noise pollution, reduce running cost. U type pipe and communicating pipe directly set up the position at the straining chamber of filtering ponds in the filtering ponds, and structural design is inseparabler, and occupation space is little, has further reduced the area of filtering ponds.

The utility model discloses use U type pipe intercommunication sedimentation tank and filtering ponds, make the backwash in-process suck the suction resistance increase of cover suction U type intraductal water that prevents, make in the sedimentation tank unfiltered sewage as far as possible directly take away by preventing sucking the cover to make and prevent sucking the clear water that the cover sucked the filter chamber below more, the washing of filtering layer is more thorough, cleaner.

The utility model discloses a water inlet pipe of U type pipe is long, the outlet pipe is short, and the resistance that the rivers flowed through U type pipe further increases, prevents that the backwash in-process is reversed suction hood suction more not filterable sewage.

The utility model discloses the sewage that erodees the filtering layer is direct from the back suction, second bend section, straight tube section discharge filtering ponds, and the centre can not be through other pipelines, erodees sewage discharge more thoroughly.

The utility model discloses set up in the filtering pond with filtering ponds size assorted filter chamber, set up anti-suction hood above the filter layer in the middle part of the filter chamber, anti-suction hood begins to absorb the back flush water in the filter chamber from the middle part, and the suction is more thorough, can backwash the filter layer comprehensively. The utility model discloses set up in the straining chamber with straining chamber size assorted filtering layer, the nozzle stub of U type pipe is located the filtering layer top, and there is sufficient storage in the filtering layer top to treat the space of filtering sewage, guarantees that sewage can both follow the filtering layer and filter the back and flow.

Drawings

FIG. 1 is a front view of a sewage treatment apparatus.

Fig. 2 is a cross-sectional view a-a of fig. 1.

Fig. 3 is a sectional view of B-B of fig. 1.

Fig. 4 is an enlarged view of a portion C in fig. 2.

In the figure: 1. an anoxic biological reaction tank; 2. an aerobic biological reaction tank; 3. a sedimentation tank; 4. a filtration tank; 5. disinfecting a clean water tank; 6. a water inlet; 7. a U-shaped pipe; 8. a communicating pipe; 9. a water outlet; 10. a through hole; 11. a filtering layer; 12. a filtration chamber; 13. a siphon break pipe; 14. a siphon backwash pipe; 15. a straight pipe section; 16. a first bend section; 17. a second bend section; 18. and (4) a back suction cover.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in figure 1, the sewage treatment device of the utility model comprises an anoxic biological reaction tank 1, an aerobic biological reaction tank 2, a sedimentation tank 3, a filtering tank 4 and a disinfection clean water tank 5 which are connected in sequence and are adjacent to each other, set up water inlet 6 on oxygen deficiency biological reaction pond 1 upper portion, set up delivery port 9 at disinfection clean water reservoir 5, oxygen deficiency biological reaction pond 1 is used for decomposing difficult degradable long-chain macromolecule into the short chain micromolecule of easy biochemical degradation, aerobe biological reaction pond 2 is used for degrading these short chain organic matter micromolecules into inorganic matters such as carbon dioxide and water, sedimentation tank 3 is used for removing remaining particulate matter in the sewage, the biological deciduate that colloid and bacterial produced because of the metabolism, filtering ponds 4 is used for getting rid of tiny particulate matter and colloid, disinfection clean water reservoir 5 disinfects the bacterium that contains in the water, thereby make water satisfy emission or retrieval and utilization standard.

As shown in fig. 2, 3 and 4, a filter chamber 12 with a size matched with that of the filter tank 4 is arranged at the middle position in the filter tank 4, a filter layer 11 is arranged at the lower part in the filter chamber 12, and a plurality of communicating pipes 8 with the same height as the filter chamber 12 are vertically arranged through the filter layer 11. Close to sedimentation tank 3 and set up U type pipe 7 in filtering ponds 4, U type pipe 7 is by the bottom intercommunication, a both ends open-ended long tube and a nozzle stub are constituteed, the long tube of U type pipe 7 passes filter chamber 12, the open end of long tube is connected with 3 upper portions of sedimentation tank, filter layer 11 is passed to the nozzle stub of U type pipe 7, the open end of nozzle stub is located filter layer 11 middle part top, 7 bottoms of U type pipe are located filter layer 11 below, the long tube is the inlet tube, the nozzle stub is the outlet pipe. Inside filter chamber 12 leaves the sufficient space of storing the sewage of treating filtering above filtering layer 11, guarantees that sewage can both flow out after filtering from filtering layer 11. U type pipe 7 and communicating pipe 8 directly set up the position of straining chamber 12 in filtering ponds 4, and structural design is inseparabler, and occupation space is little, has further reduced filtering ponds 4's area. The side wall of the filtering tank 4 above the filtering chamber 12 is provided with a through hole 10, and the clean water filtered by the filtering layer 11 flows upwards from the communicating pipe 8 and flows into the sterilized clean water tank 5 from the through hole 10.

As shown in fig. 2, a siphon backwash pipe 14 is arranged outside the filtering tank 4, the siphon backwash pipe 14 comprises a straight pipe section 15 arranged vertically, a first bend section 16 and a second bend section 17 extending horizontally from the top end and the upper part of the straight pipe section 15, the first bend section 16 extends downwards into the filtering tank 4 from above the filtering tank 4, a siphon break pipe 13 is arranged at the bottom of the first bend section, the siphon break pipe 13 is higher than the filtering chamber 12 and lower than the through hole 10, and the existence of the siphon break pipe 13 can prevent water at the upper part of the filtering chamber 12 from being completely drained. The second bend section 17 extends into the filtering tank 4 from the side wall of the filtering tank 4, a downward bent part extends into the filtering chamber 12, a reverse suction cover 18 is arranged at the bottom of the bent part, the reverse suction cover 18 is positioned right above the short pipe of the U-shaped pipe 7, the reverse suction cover 18 starts to suck back flushing water in the filtering chamber 12 from the middle part, the suction is thorough, and the filtering layer 11 can be backwashed comprehensively. The U-shaped pipe 7 is used for communicating the sedimentation tank 3 and the filtering tank 4, so that the suction resistance of the reverse suction hood 18 for sucking water in the U-shaped pipe 7 in the backwashing process is increased, unfiltered sewage in the sedimentation tank 3 is directly sucked away by the reverse suction hood 18 as little as possible, the reverse suction hood 18 pumps more clean water below the filtering chamber 12, and the filtering layer 11 is cleaned more thoroughly and cleaner. The siphon back-washing pipe 14 is arranged in the filter tank 4, and the clean water above the filter chamber 12 is used for automatic back washing, so that the use of a back-washing water pump is omitted, the control mode is simplified, the working energy consumption and the noise pollution are reduced, and the operation cost is reduced.

The utility model discloses a sewage treatment plant during operation, pour into domestic sewage from water inlet 6, domestic sewage flows through oxygen deficiency biological reaction pond 1 in proper order, aerobe biological reaction pond 2 and sedimentation tank 3, upper filter liquor in the sedimentation tank 3 gets into filtering ponds 4 from U type pipe 7 in, at first arrive in the filter chamber 12 of the top of filter layer 11, filter layer 11 flows through downwards because of the action of gravity, the water after the filtration reachs filtering ponds 4 bottom, it is upward flowing to filter chamber 12 top to follow communicating pipe 8 again, because it is great with the play water pressure difference to intake, the water after the filtration directly flows into disinfection clean water tank 5 from through-hole 10, discharge from delivery port 9 at last. After working for a period of time, the filter layer 11 gathers a large amount of pollutants and causes the problem of blockage, which leads to the gradual rise of the water pressure in the filter chamber 12 and the gradual rise of the water level in the siphon backwashing pipe 14 communicated with the inside of the filter chamber 12, when the water level reaches the top of the straight pipe section 15 of the siphon backwashing pipe 14, the air in the siphon backwashing pipe 14 is completely emptied to form negative pressure, which leads to the generation of siphon phenomenon, the backwashing cover 18 starts to automatically suck the sewage in the filter chamber 12, the clear water above the filter chamber 12 enters the lower part of the filter chamber 12 from the communicating pipe 8 from top to bottom under the action of gravity and water pressure difference, the clear water below the filter chamber 12 washes the filter layer 11 from bottom to top, and the washed sewage is discharged from the backwashing cover 18, the second bend section 17 and the straight pipe section 15. After a period of flushing, the water level in the water chamber above the filtering chamber 12 gradually drops, when the water level is lowered to the bottom of the siphon break pipe 13, the siphon break pipe 13 is fed with air, the air rapidly reaches the top of the siphon backwash pipe 14, so that the negative pressure disappears, the siphon phenomenon is terminated, and then the next filtering period is started. The utility model discloses the sewage that erodees filtering layer 11 directly from the back suction cover 18, second bend section 17, the straight tube section 15 discharge filtering ponds 4, the centre can not be through other pipelines, and the blowdown is more thorough.

The above description is illustrative of the present invention and is not intended to limit the present invention, and the present invention may be modified in any manner without departing from the spirit of the present invention. The filter tank 4 can also be applied to other devices which need to filter liquid, the other end of the U-shaped pipe 7 is communicated with the liquid to be filtered, and the through hole 10 is used as a clean water outlet. The U-shaped pipe 7 is not needed, and a pipeline communicated with the sedimentation tank 3 is arranged in the filter chamber 12 above the filter layer 11; the U-shaped pipe 7 can also be formed by communicating the bottoms of two water pipes with the same length. The through hole 10 can also be arranged at the top of the filtering tank 4, and the through hole 10 is connected with the purified water tank 5 through a pipeline.

Claims

1. A filter tank is characterized in that: a filter chamber (12) is arranged in the filter tank (4), a filter layer (11) is arranged in the filter chamber (12), a plurality of communicating pipes (8) are arranged in the filter chamber (12) which is communicated with the filter chamber (11), a pipeline communicated with liquid to be filtered is arranged in the filter chamber (12) above the filter layer (11), and a water outlet is arranged above the filter chamber (12); a siphon backwashing pipe (14) is arranged outside the filter tank (4), and the siphon backwashing pipe (14) comprises a straight pipe section (15) which is vertically arranged, and a first bend pipe section (16) and a second bend pipe section (17) which extend from the straight pipe section (15); the second bend (17) extends into the filter chamber (12) above the filter layer (11).

2. A filtration tank according to claim 1, wherein: a U-shaped pipe (7) is arranged in the filtering tank (4), a water inlet pipe of the U-shaped pipe (7) is communicated with liquid to be filtered, a water outlet pipe penetrates through the filtering layer (11), and the opening end of the water outlet pipe is positioned in the filtering chamber (12) above the filtering layer (11).

3. A filtration tank according to claim 2, wherein: the U-shaped pipe (7) is positioned in the filtering tank (4), the water inlet pipe penetrates through the filtering chamber (12), and the bottom of the U-shaped pipe (7) is positioned below the filtering chamber (12); the water inlet pipe of the U-shaped pipe (7) is long, and the water outlet pipe is short.

4. A filtration tank according to claim 1, wherein: and a reverse suction cover (18) is arranged at the bottom of the bent part of the second bent pipe section (17), and the reverse suction cover (18) is positioned in the middle above the filter layer (11).

5. A filtration tank according to claim 1, wherein: the size of the filter chamber (12) is matched with that of the filter tank (4), and the size of the filter layer (11) is matched with that of the filter chamber (12).

6. A filtration tank according to claim 2, wherein: the water outlet pipe of the U-shaped pipe (7) is positioned in the middle of the filtering layer (11).

7. A filtration tank according to claim 1, wherein: the filtering layer (11) is positioned at the lower part of the filtering chamber (12).

8. A filtration tank according to claim 1, wherein: the first bend section (16) extends into the filtering tank (4), and the bottom of the first bend section (16) is provided with a siphon breaking pipe (13).

9. A filtration tank according to claim 8, wherein: the siphon break pipe (13) is positioned higher than the filter chamber (12) and lower than the through hole (10).

10. A sewage treatment apparatus using the filter tank of claim 1, characterized in that: including oxygen deficiency biological reaction pond (1), good oxygen biological reaction pond (2), sedimentation tank (3), filtering ponds (4) and disinfection clean water reservoir (5) that connect in proper order, set up water inlet (6) in oxygen deficiency biological reaction pond (1), pipeline and sedimentation tank (3) intercommunication in straining chamber (12) of filtering ponds (4), the delivery port and the disinfection clean water reservoir (5) of straining chamber (12) top are connected.