CN112978887A

CN112978887A - Sewage treatment device and treatment method thereof

Info

Publication number: CN112978887A
Application number: CN202110379316.6A
Authority: CN
Inventors: 杨倩; 张新立
Original assignee: North China Electric Power University Science & Technology College
Current assignee: North China Electric Power University Science & Technology College
Priority date: 2021-04-08
Filing date: 2021-04-08
Publication date: 2021-06-18

Abstract

The invention discloses a sewage treatment device which comprises two parallel-connected settling tanks, wherein the two settling tanks are respectively connected with a water inlet pipe through a first switch valve, the two settling tanks are respectively connected with a water outlet pipe through a fifth switch valve, annular filter cylinders are concentrically arranged in the settling tanks, an inner cavity communicated with the top surface is arranged in each annular filter cylinder, a feed inlet, a driving motor and a hydraulic cylinder are arranged at the top of each settling tank, the output end of the driving motor is connected with a rotating shaft, the rotating shaft is positioned on the inner side of each annular filter cylinder, stirring blades are arranged on the rotating shaft, the piston end of each hydraulic cylinder is connected with an annular sewage suction pipe, the annular sewage suction pipes are positioned in the inner cavities, the annular sewage suction pipes in the two settling tanks are respectively communicated with a sediment temporary storage tank through hoses, a sealing top cover is arranged at the top of the sediment storage tank. The invention can improve the defects of the prior art and realize the efficient integrated precipitation separation treatment of the sewage.

Description

Sewage treatment device and treatment method thereof

Technical Field

The invention relates to the technical field of sewage treatment, in particular to a sewage treatment device and a sewage treatment method.

Background

The sewage treatment process needs to firstly carry out precipitation separation treatment on the sewage. In the prior art, a plurality of large-capacity sedimentation tanks are generally arranged for sedimentation separation treatment. However, this method has the disadvantages of large floor space and long processing time.

Disclosure of Invention

The invention aims to provide a sewage treatment device and a sewage treatment method, which can solve the defects of the prior art and realize efficient integrated precipitation separation treatment of sewage.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows.

A sewage treatment device comprises two parallel-connected settling tanks, wherein the two settling tanks are respectively connected with a water inlet pipe through a first switch valve, the two settling tanks are respectively connected with a water outlet pipe through a fifth switch valve, annular filter cylinders are concentrically arranged in the settling tanks, an inner cavity communicated with the top surface is arranged in each annular filter cylinder, a feed opening is arranged at the top of each settling tank, a driving motor and a hydraulic cylinder, the output end of the driving motor is connected with a rotating shaft, the rotating shaft is positioned at the inner side of each annular filter cylinder, stirring blades are arranged on the rotating shaft, the piston end of each hydraulic cylinder is connected with an annular sewage suction pipe, the annular sewage suction pipes are positioned in the inner cavities, the annular sewage suction pipes in the two settling tanks are respectively communicated with a sediment tank through hoses, a sealing top cover is arranged at the top of the sediment temporary storage tank, the hoses are connected to the sealing top, the negative pressure pipe is provided with a second switch valve, the sediment temporary storage tank is internally provided with a conical filter screen, the bottom of the sediment temporary storage tank is connected with a drain pipe, and the drain pipe is provided with a third switch valve.

Preferably, the two sides of the annular sewage suction pipe are provided with sewage suction ports, the top and the bottom of each sewage suction port are respectively fixed with a scraper, each scraper is in sliding contact with the inner wall of the inner cavity, the scraper is provided with a plurality of through grooves, a baffle is mounted in each sewage suction port through a support, and a gap is reserved between the edge of each baffle and the inner wall of the annular sewage suction pipe.

Preferably, the baffle is provided with a concave part in the center, and the center of the concave part is provided with a through hole.

Preferably, a cover plate is arranged above the through hole and connected through a spring concave part.

Preferably, a centrifugal motor is installed in the sediment temporary storage tank, and the conical filter screen is installed on the centrifugal motor.

The treatment method of the sewage treatment device comprises the following steps: opening any one first switch valve, injecting sewage to be treated into the corresponding precipitation tank, adding a treatment agent into the precipitation tank through a feed inlet, and starting a driving motor to enable a stirring blade to stir the sewage; opening a second switch valve and a corresponding fourth switch valve while stirring, simultaneously starting a hydraulic cylinder to drive the annular sewage suction pipe to move up and down, and sucking the precipitated impurities attached to the surface of the annular filter cylinder into a sediment temporary storage tank; after the treatment is finished, stopping the driving motor and the hydraulic cylinder, closing the second switch valve and the corresponding fourth switch valve, opening the corresponding fifth switch valve to discharge the treated water body, and meanwhile, repeating the operation on the other settling tank to treat the sewage in the other settling tank; and opening the sealing top cover and the third switch valve regularly to clean sludge and sewage in the sediment temporary storage tank.

Adopt the beneficial effect that above-mentioned technical scheme brought to lie in: the invention is provided with two sedimentation tanks in parallel, and can realize continuous treatment of sewage through alternate use. After sewage enters the settling tank, sewage is precipitated and separated out under the action of treatment agents and stirring, and is attached to the annular filter cylinder, and then the annular sewage suction pipe is used for sucking and discharging precipitated impurities under negative pressure. The scrapers on two sides of the dirt suction port are used for scraping the surface of the annular filter cylinder, so that precipitated impurities attached to the annular filter cylinder are separated from the surface of the annular filter cylinder. As the water flow is sucked into the dirt suction port, the flow cross-sectional area at the gap is suddenly reduced, so that a circulating turbulent flow area is formed in the concave part, and further washing on the surface of the annular filter cylinder is realized. The water flow through the through holes can increase new flow tendency in the circulating turbulent flow area, thereby improving the washing effect of the water flow on the surface of the annular filter cylinder. The position of apron can be close to the through-hole along with the velocity of flow of negative pressure soil pick-up gradually to progressively increase apron top circulation turbulent region, reduce the flow of through-hole simultaneously, realize all can realizing good effect of decontaminating under the high low velocity of flow state. Through carrying out centrifugal rotation to the toper filter screen, be convenient for recycle the collection of mud in the toper filter screen.

Drawings

FIG. 1 is a block diagram of one embodiment of the present invention.

Fig. 2 is a structural view of a soil suction port according to an embodiment of the present invention.

In the figure: 1. a settling tank; 2. a first on-off valve; 3. a water inlet pipe; 4. an annular filter cartridge; 5. an inner cavity; 6. a feeding port; 7. a drive motor; 8. a hydraulic cylinder; 9. a rotating shaft; 10. a stirring blade; 11. an annular sewage suction pipe; 12. a hose; 13. a silt temporary storage tank; 14. a fourth switching valve; 15. sealing the top cover; 16. a negative pressure tube; 17. a second on-off valve; 18. a conical filter screen; 19. a drain pipe; 20. a third on-off valve; 21. a fifth on-off valve; 22. a water outlet pipe; 23. a sewage suction port; 24. a squeegee; 25. a through groove; 26. a support; 27. a baffle plate; 28. a gap; 29. a recessed portion; 30. a through hole; 31. a cover plate; 32. a spring; 33. a centrifugal motor.

Detailed Description

The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description and the description of the attached drawings, and the specific connection mode of each part adopts the conventional means of mature bolts, rivets, welding, sticking and the like in the prior art, and the detailed description is not repeated.

Referring to fig. 1-2, the present embodiment includes,

two parallel-connected settling tanks 1, wherein the two settling tanks 1 are respectively connected with a water inlet pipe 3 through first switch valves 2, the two settling tanks 1 are respectively connected with a water outlet pipe 22 through fifth switch valves 21, an annular filter cylinder 4 is concentrically arranged in the settling tank 1, an inner cavity 5 communicated with the top surface is arranged in the annular filter cylinder 4, a feed inlet 6, a driving motor 7 and a hydraulic cylinder 8 are arranged at the top of the settling tank 1, the output end of the driving motor 7 is connected with a rotating shaft 9, the rotating shaft 9 is positioned at the inner side of the annular filter cylinder 4, a stirring blade 10 is arranged on the rotating shaft 9, the piston end of the hydraulic cylinder 8 is connected with an annular sewage suction pipe 11, the annular sewage suction pipe 11 is positioned in the inner cavity 5, the annular sewage suction pipes 11 in the two settling tanks 1 are respectively communicated with a sediment temporary storage tank 13 through hoses 12, a sealing top cover 15 is arranged at the top, the hose 12 is provided with a fourth switch valve 14, the sediment temporary storage tank 13 is connected with a negative pressure pipe 16, the negative pressure pipe 16 is provided with a second switch valve 17, the sediment temporary storage tank 13 is internally provided with a conical filter screen 18, the bottom of the sediment temporary storage tank 13 is connected with a drain pipe 19, and the drain pipe 19 is provided with a third switch valve 20. Annular soil pick-up pipe 11 both sides are provided with soil pick-up mouth 23, and the top and the bottom of soil pick-up mouth 23 are fixed with scraper blade 24 respectively, and

scraper blade

24 and 5 inner wall sliding contact of inner chamber are provided with a plurality of on the scraper blade 24 and lead to groove 25, install baffle 27 through support 26 in the soil pick-up mouth 20, remain gapped 28 between baffle 27 edge and the 11 inner walls of annular soil pick-up pipe. The baffle 24 is provided with a depressed part 29 at the center, and a through hole 30 is opened at the center of the depressed part 29. A cover plate 31 is arranged above the through hole 30, and the cover plate 31 is connected with the concave part 29 of the spring 32. A centrifugal motor 33 is arranged in the sediment temporary storage tank 13, and a conical filter screen 18 is arranged on the centrifugal motor 33.

The treatment method of the sewage treatment device comprises the following steps: opening any one first switch valve 2, injecting sewage to be treated into the corresponding sedimentation tank 1, adding a treatment agent into the sedimentation tank 1 through a feed inlet 6, and starting a driving motor 7 to enable a stirring blade 10 to stir the sewage; while stirring, opening a second switch valve 17 and a corresponding fourth switch valve 14, and simultaneously starting a hydraulic cylinder 8 to drive an annular sewage suction pipe 11 to move up and down, so that precipitated impurities attached to the surface of the annular filter cylinder 4 are sucked into a sediment temporary storage tank 13; after the treatment is finished, stopping the driving motor 7 and the hydraulic cylinder 8, closing the second switch valve 17 and the corresponding fourth switch valve 14, opening the corresponding five switch valves 21 to discharge the treated water body, and meanwhile, repeating the operation on the other settling tank 1 to treat the sewage of the other settling tank 1; and (3) periodically opening the sealing top cover 15 and the third switch valve 20 to clean sludge and sewage in the sediment temporary storage tank 13.

The invention has compact structure, high sewage treatment efficiency and good application prospect.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A sewage treatment device is characterized in that: the device comprises two parallel-connected settling tanks (1), wherein the two settling tanks (1) are respectively connected with a water inlet pipe (3) through first switch valves (2), the two settling tanks (1) are respectively connected with a water outlet pipe (22) through fifth switch valves (21), annular filter cylinders (4) are concentrically arranged in the settling tanks (1), inner cavities (5) communicated with the top surface are arranged in the annular filter cylinders (4), a feeding port (6), a driving motor (7) and a hydraulic cylinder (8) are arranged at the top of each settling tank (1), the output end of the driving motor (7) is connected with a rotating shaft (9), the rotating shaft (9) is positioned on the inner sides of the annular filter cylinders (4), stirring blades (10) are arranged on the rotating shaft (9), the piston end of the hydraulic cylinder (8) is connected with an annular sewage suction pipe (11), the annular sewage suction pipes (11) are positioned in the inner cavities (5), the annular sewage suction pipes (11) in the two settling tanks (1) are respectively communicated with a sediment storage tank (13) through, sealing top cover (15) are installed at silt temporary storage tank (13) top, hose (12) are connected on sealing top cover (15), install fourth ooff valve (14) on hose (12), be connected with negative pressure pipe (16) on silt temporary storage tank (13), install second ooff valve (17) on negative pressure pipe (16), install toper filter screen (18) in silt temporary storage tank (13), silt temporary storage tank (13) bottom is connected with drain pipe (19), install third ooff valve (20) on drain pipe (19).

2. The sewage treatment apparatus of claim 1, wherein: annular soil pick-up pipe (11) both sides are provided with soil pick-up mouth (23), and the top and the bottom of soil pick-up mouth (23) are fixed with scraper blade (24) respectively, and scraper blade (24) and inner chamber (5) inner wall sliding contact are provided with a plurality of on scraper blade (24) and lead to groove (25), install baffle (27) through support (26) in soil pick-up mouth (20), remain gapped (28) between baffle (27) edge and annular soil pick-up pipe (11) inner wall.

3. The sewage treatment apparatus according to claim 2, wherein: the center of the baffle (24) is provided with a sunken part (29), and the center of the sunken part (29) is provided with a through hole (30).

4. The sewage treatment apparatus of claim 3, wherein: a cover plate (31) is arranged above the through hole (30), and the cover plate (31) is connected with a concave part (29) through a spring (32).

5. The sewage treatment apparatus of claim 1, wherein: install centrifugal motor (33) in silt temporary storage tank (13), install on centrifugal motor (33) conical screen (18).

6. A treatment method of the sewage treatment apparatus according to any one of claims 1 to 5, characterized by comprising the steps of: opening any one first switch valve (2), injecting sewage to be treated into the corresponding sedimentation tank (1), adding a treatment agent into the sedimentation tank (1) through a feeding port (6), and starting a driving motor (7) to enable a stirring blade (10) to stir the sewage; the second switch valve (17) and the corresponding fourth switch valve (14) are opened while stirring, and meanwhile, the hydraulic cylinder (8) is started to drive the annular sewage suction pipe (11) to move up and down, so that the precipitated impurities attached to the surface of the annular filter cylinder (4) are sucked into the sediment temporary storage tank (13); after the treatment is finished, stopping the driving motor (7) and the hydraulic cylinder (8), closing the second switch valve (17) and the corresponding fourth switch valve (14), opening the corresponding five switch valves (21) to discharge the treated water body, and simultaneously repeating the operation on the other settling tank (1) to treat the sewage of the other settling tank (1); and (3) opening the sealing top cover (15) and the third switch valve (20) periodically to clean sludge and sewage in the sediment temporary storage tank (13).