CN217103484U

CN217103484U - Underground rural domestic sewage treatment integrated equipment

Info

Publication number: CN217103484U
Application number: CN202220518672.1U
Authority: CN
Inventors: 李尔泉; 郑新强; 杨琦鹏; 余烽山
Original assignee: Cue Co ltd
Current assignee: Cue Co ltd
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2022-08-02
Anticipated expiration: 2032-03-10

Abstract

The utility model relates to a buried rural domestic sewage treatment integrated device, which consists of a grid well, an anoxic tank, a contact oxidation tank, a horizontal sedimentation tank, a clean water tank, an undercurrent artificial wetland and a device room; the grid well is positioned on the left side of the anoxic tank and is higher than the anoxic tank, and the grid well is communicated with the sewage inlet pipe, the ground and the anoxic tank; the anoxic tank, the contact oxidation tank, the horizontal sedimentation tank and the clean water tank are all buried underground; the subsurface flow constructed wetland is positioned above the pool; a medicine supply device and an air supply device are arranged in the equipment room; the medicine supply device supplies medicine to the contact oxidation pond through the medicine supply pipe; the gas supply device is communicated with the contact oxidation tank through a first air pipe to supply gas to the contact oxidation tank; the air-lifting device in the advection sedimentation tank is communicated with the anoxic tank through an air-water mixed liquid pipe to reflux the mixed liquid to the anoxic tank, and the air supply device supplies air to the air-lifting device through a second air pipe to drive the mixed liquid to reflux; and a clear water lifting pump in the clear water tank guides clear water into the subsurface flow constructed wetland through a clear water pipe. The utility model discloses the device is few, compact structure.

Description

Underground rural domestic sewage treatment integrated equipment

Technical Field

The utility model relates to a rural domestic sewage treatment field, in particular to bury rural domestic sewage treatment integration equipment.

Background

The existing buried rural sewage treatment integrated equipment needs a plurality of devices, generally needs to be provided with a plurality of stages of pump lifting and backflow, occupies large area, is inconvenient to manage and is easy to break down. The water collecting well is required to be arranged for lifting, the earth covering on the top of the pool is less, and the secondary comprehensive utilization is difficult. The upper part of the pool is affected by pipelines, equipment, inspection wells and the like, and the artificial wetland cannot be directly made above the pool.

SUMMERY OF THE UTILITY MODEL

Therefore, a buried rural domestic sewage treatment integrated device needs to be provided for solving the problems of large occupied area, inconvenient management and easy fault caused by excessive existing devices.

In order to realize the aim, the inventor provides buried rural domestic sewage treatment integrated equipment, which consists of a grid well, an anoxic tank, a contact oxidation tank, a horizontal sedimentation tank, a clean water tank, an underflow artificial wetland and equipment rooms; the grid well is arranged below the ground, is positioned on the left side of the anoxic tank and is higher than the anoxic tank, and is communicated with the sewage inlet pipe, the ground and the anoxic tank; the anoxic tank, the contact oxidation tank, the horizontal sedimentation tank and the clean water tank are sequentially and horizontally arranged from left to right and are communicated in series, and are all buried underground; the subsurface flow constructed wetland is positioned above the grid well, the anoxic tank, the contact oxidation tank, the horizontal flow sedimentation tank and the clean water tank; the equipment room is arranged on the ground, and a medicine supply device and an air supply device are arranged in the equipment room; the medicine supply device supplies medicine to the contact oxidation pond through a medicine supply pipe; the gas supply device is communicated with the contact oxidation tank through a first air pipe to supply gas to the contact oxidation tank; the horizontal flow sedimentation tank is internally provided with an air lifting device which is communicated with the anoxic tank through an air-water mixed liquid pipe so as to reflux mixed liquid to the anoxic tank, and the air supply device supplies air to the air lifting device through a second air pipe so as to drive the mixed liquid to reflux; and a clear water lifting pump is arranged in the clear water tank and guides clear water into the subsurface flow constructed wetland through a clear water pipe.

Preferably, the left side of the grid well is communicated with a sewage pipe, the upper part of the grid well is communicated with the ground, and the lower part of the right side of the grid well is communicated with the upper part of the left side of the anoxic tank.

Preferably, a stainless steel artificial grid is arranged in the grid well; a first filler bracket and a first biological filler are arranged in the anoxic tank; the contact oxidation pond is equipped with second filler support and second biological filler, second biological filler below is equipped with the micropore aerator, air feeder passes through first air piping connection the micropore aerator is in order to its air feed.

Preferably, a plurality of sludge hoppers are arranged in the horizontal sedimentation tank, and the air lifting device is arranged in each sludge hopper and communicated with the second air pipe.

Preferably, the air supply device comprises a blower, a manual regulating valve and an automatic control valve; the blower is connected with the first air pipe and the second air pipe; the regulating valves are arranged on the first air pipe and the second air pipe to control the air quantity; the second air pipeline is also provided with the automatic control valve to control the on-off of the pipeline.

Preferably, the medicine supply device comprises a dephosphorization medicine storage barrel and a dosing metering pump.

Preferably, plants, a soil layer, a wetland water distribution pipe, a wetland packing layer and a wetland water outlet pipe are arranged in the subsurface flow constructed wetland; the plants are planted on the soil layer and above the ground; the wetland water distribution pipe is communicated with the clear water pipe and is embedded in the soil layer; the soil layer is laid above the wetland filler layer; one section of the wetland water outlet pipe is embedded at the bottom of the wetland filler layer, and the other section of the wetland water outlet pipe extends upwards to extend out of the ground; and the clean water is purified again by the soil layer and the wetland packing layer and then flows out through the wetland water outlet pipe.

Preferably, the subsurface flow constructed wetland is arranged in a wetland accommodating tank, and the wetland accommodating tank is positioned above the contact oxidation tank, the horizontal flow sedimentation tank and the clean water tank; the equipment room is positioned above the anoxic pond; the wetland packing layer is formed by laying 30% of limestone, 30% of zeolite and 40% of gravel.

Preferably, the grid well, the anoxic tank, the contact oxidation tank, the horizontal sedimentation tank, the clean water tank and the wetland holding tank are designed in a concrete type integration manner.

Preferably, the reflux ratio of the horizontal flow sedimentation tank to the anoxic tank for refluxing the mixed liquor is configured to be 500-800%.

The utility model discloses a bury rural domestic sewage treatment integration equipment of formula only comprises grid well, oxygen deficiency pond, contact oxidation pond, advection sedimentation tank, clean water basin, undercurrent constructed wetland and equipment room, and the device is few, and compact structure can bury the underground deeply, adopts gravity to intake, and the sewage treatment flow is short, the energy consumption is low, the operation management is convenient and can guarantee purifying effect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for a person skilled in the art to obtain other drawings based on the drawings without any creative effort.

FIG. 1 is a schematic view of an apparatus according to an embodiment of the present application;

fig. 2 is a schematic flow chart diagram according to an embodiment of the present application.

Description of the reference numerals:

100. a grid well; 110. an artificial grid; 200. an anoxic tank; 210. a first filler holder; 220. a first biological filler; 300. a contact oxidation pond; 310. a drug supply tube; 320. a first air tube; 330. a second filler support; 340. a second biological filler; 350. a microporous aerator; 400. a horizontal flow sedimentation tank; 410. a second air tube; 420. a gas stripping device; 421. a gas-water mixed liquid pipe; 430. a sludge hopper; 500. a clean water tank; 510. a clean water lift pump; 600. subsurface flow constructed wetlands; 610. a plant; 620. a soil layer; 630. a wetland water distribution pipe; 640. a wetland packing layer; 650. a wetland water outlet pipe; 700. a device room; 710. a gas supply device; 711. a blower; 712. a manual regulating valve; 713. An automatic control valve; 720. a drug delivery device; 721. a phosphorus drug storage barrel; 722. dosing pump.

Detailed Description

To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.

The utility model provides a bury rural domestic sewage treatment integration equipment of formula please refer to fig. 1 to 2:

a buried rural domestic sewage treatment integrated device is composed of a grid well 100, an anoxic tank 200, a contact oxidation tank 300, a horizontal flow sedimentation tank 400, a clean water tank 500, an underflow artificial wetland 600 and a device room 700; the grid well 100 is arranged below the ground, is positioned on the left side of the anoxic tank 200 and is higher than the anoxic tank 200, and the grid well 100 is communicated with the sewage inlet pipe, the ground and the anoxic tank 200; the anoxic tank 200, the contact oxidation tank 300, the horizontal sedimentation tank 400 and the clean water tank 500 are sequentially horizontally arranged from left to right and are communicated in series, and are all buried underground; the subsurface flow constructed wetland 600 is positioned above the grid well 100, the anoxic tank 200, the contact oxidation tank 300, the horizontal flow sedimentation tank 400 and the clean water tank 500; the equipment room 700 is arranged on the ground, and a medicine supply device 720 and an air supply device 710 are arranged in the equipment room 700; the medicine supply device 720 supplies medicine to the contact oxidation pond 300 through the medicine supply pipe 310; the gas supply device 710 is communicated with the contact oxidation tank 300 through a first air pipe 320 to supply gas to the contact oxidation tank; the horizontal flow sedimentation tank 400 is internally provided with an air lifting device 420, the air lifting device 420 is communicated with the anoxic tank 200 through an air-water mixed liquid pipe 421 to reflux the mixed liquid to the anoxic tank, and an air supply device 710 supplies air to the air lifting device 420 through a second air pipe 410 to drive the mixed liquid to reflux; a clear water lift pump 510 is arranged in the clear water tank 500, and the clear water lift pump 510 guides clear water into the subsurface flow constructed wetland 600 through a clear water pipe. During operation, sewage flows through the grid well 100, the anoxic tank 200, the contact oxidation tank 300 and the advection sedimentation tank 400 in sequence, is purified into clear water and flows to the clear water tank 500, the clear water lift pump 510 guides the clear water into the undercurrent artificial wetland 600, and the clear water is purified again through the undercurrent artificial wetland 600 and flows out.

Specifically, the left side of the grille well 100 of this embodiment is communicated with the sewage pipe, the upper side is communicated with the ground, and the lower part of the right side is communicated with the upper part of the left side of the anoxic tank 200. Specifically, the lower part of the right side is communicated with the upper part of the left side of the anoxic tank 200, the bottom of the grid well 100 is higher than the bottom of the anoxic tank 200, and sewage can enter the anoxic tank 200 by gravity without other power devices.

Specifically, the stainless steel artificial grating 110 is arranged in the grating well 100 of the embodiment; a first filler bracket 210 and a first biological filler 220 are arranged in the anoxic tank 200; the contact oxidation tank 300 is provided with a second filler support 330 and a second biological filler 340, a microporous aerator 350 is arranged below the second biological filler 340, and an air supply device 710 is connected with the microporous aerator 350 through a first air pipe 320 to supply air to the microporous aerator 350. The concentration of DO in the contact oxidation pond 300 is controlled within the range of 0.8-1.2 mg/L.

Specifically, a plurality of sludge hoppers 430 are arranged in the horizontal sedimentation tank 400 of the embodiment, that is, the horizontal sedimentation tank 400 of the embodiment is a multi-bucket horizontal sedimentation tank 400, and each sludge hopper 430 is provided with an air-lifting device 420 and is communicated with a second air pipe 410. The upper part of the multi-bucket horizontal sedimentation tank 400 is supernatant liquid after mud-water separation, and the lower part is mixed liquid of sludge concentration.

Specifically, the air supply device 710 of the present embodiment includes a blower 711, a manual regulating valve 712, and an automatic control valve 713; the blower 711 connects the first air pipe 320 and the second air pipe 410; the pipelines of the first air pipe 320 and the second air pipe 410 are provided with regulating valves to control the air quantity; the second air pipe 410 is further provided with an automatic control valve 713 for controlling the on/off of the pipe. The automatic control valve 713 can be arranged to automatically and sequentially switch on and off each second air tube 410 so as to realize continuous backflow and large-flow backflow of the mixed liquid.

Specifically, the chemical supply device 720 of the present embodiment includes a phosphorus removal storage barrel 721 and a dosing metering pump 722. Phosphorus removal agent is added to the contact oxidation tank 300 through the medicine supply pipe 310 and fully reacts with phosphorus in the sewage, so that the purpose of removing phosphorus is achieved, and the purification efficiency of the total phosphorus in the effluent is improved.

Specifically, the subsurface flow constructed wetland 600 of the present embodiment is internally provided with plants 610, a soil layer 620, a wetland water distribution pipe 630, a wetland filler layer 640 and a wetland water outlet pipe 650; plants 610 are planted on soil layer 620 and above the ground; the wetland water distribution pipe 630 is communicated with a clean water pipe and is buried in the soil layer 620; the soil layer 620 is laid above the wetland filler layer 640; one section of the wetland water outlet pipe 650 is embedded at the bottom of the wetland packing layer 640, and the other section extends upwards to extend out of the ground; the clean water is purified again by the soil layer 620 and the wetland packing layer 640 and then flows out through the wetland water outlet pipe 650.

Specifically, the subsurface flow constructed wetland 600 of the present embodiment is arranged in a wetland accommodating tank, and the wetland accommodating tank is positioned above the contact oxidation tank 300, the horizontal flow sedimentation tank 400 and the clean water tank 500; the equipment room 700 is positioned above the anoxic tank 200; the wetland packing layer 640 is formed by laying 30% of limestone, 30% of zeolite and 40% of gravel. The area occupied by the subsurface flow constructed wetland 600 is from 0.25 to 0.5 square meters per meter, and the surface load of the wetland reaches 2 to 4 m high productivity per square meter.

Specifically, the grid well 100, the anoxic tank 200, the contact oxidation tank 300, the horizontal sedimentation tank 400, the clean water tank 500 and the wetland holding tank of the present embodiment are integrally designed in a concrete manner. Namely, the grid well 100, the anoxic tank 200, the contact oxidation tank 300, the horizontal flow sedimentation tank 400, the clean water tank 500 and the wetland accommodating tank are formed by pouring concrete, the bottom of the subsurface flow artificial wetland 600 is the top plate of the contact oxidation tank 300, the horizontal flow sedimentation tank 400 and the clean water tank 500, and other impermeable materials are not required to be laid. The equipment buried depth of concrete formula integrated design can be adjusted according to the elevation of water pipe network, and the earthing depth is not influenced, and the cell body can be designed according to life 50 years moreover.

Specifically, the reflux ratio of the mixed liquid from the multi-bucket horizontal flow sedimentation tank 400 to the anoxic tank 200 is set to 500% to 800%. The mixed liquor sequentially flows back to the anoxic tank 200 through the gas stripping device 420, and the mixed liquor contains a large amount of nitrate nitrogen, so that the total nitrogen purification efficiency of effluent is improved; and the sludge of the mixed liquid is concentrated in the anoxic tank 200, so that the biofilm formation of the biological filler can be accelerated, and a part of carbon source can be provided for denitrification. The 500-800 percent reflux ratio can reduce the impact of water quality and quantity, reduce the biochemical impact load in the anoxic pond 200, and play the roles of ensuring the stable quality of the effluent and improving the quality of the water.

The operation process of the equipment of the embodiment is as follows:

sewage flows into the grating well 100 from the sewage inlet pipe, and the stainless steel artificial grating 110 can intercept larger suspended solid matters in the sewage and regularly and manually clean and drag for the sewage. After larger solid particles are removed from the sewage through the artificial grating 110, the sewage is directly mixed with the mixed liquid which flows back to the anoxic tank 200 in the anoxic tank 200, and the mixed liquid is denitrified into nitrogen with microorganisms of biofilm formation of the biological filler and nitrate nitrogen in the mixed liquid, and organic matters in the sewage are consumed and decomposed at the same time. After passing through the anoxic tank 200, the sewage enters the contact oxidation tank 300, the microporous bubbles released by the microporous aerator 350 in the contact oxidation tank 300 can rapidly oxygenate the sewage, the bubble rising process not only strengthens the full contact between organic matters in the water and microorganisms on the surface of the biological filler, but also helps the aged biomembrane to fall off through disturbance, maintains the sufficient activity of the contact oxidation tank 300, and the contact oxidation tank 300 effectively degrades the organic matters in the water and converts ammonia nitrogen in the sewage into nitrate nitrogen. The sewage enters the multi-bucket horizontal sedimentation tank 400 after passing through the contact oxidation tank 300, a biomembrane falling off from the surface of the biological filler in the contact oxidation tank 300 is precipitated and concentrated in the multi-bucket horizontal sedimentation tank 400, the sludge mixed liquid at the bottom is refluxed to the anoxic tank 200 through the gas stripping device 420 at the bottom of the sludge bucket 430, the suspended solid precipitation direction and the mixed liquid water flow direction are in the same direction, the precipitation is accelerated, and the effect of the upper water outlet is improved. Clear water at the upper part of the multi-bucket horizontal flow sedimentation tank 400 enters a clear water tank 500 and is lifted to the subsurface flow artificial wetland 600 through a clear water lifting pump 510, and total phosphorus and suspended matters are further removed from the subsurface flow artificial wetland 600, so that the standard discharge is ensured.

The utility model discloses a bury rural domestic sewage treatment integration equipment of formula only comprises grid well, oxygen deficiency pond, contact oxidation pond, advection sedimentation tank, clean water basin, undercurrent constructed wetland and equipment room, need not equalizing basin, sludge impoundment etc. the device is few, and compact structure can bury the underground deeply, adopts gravity to intake, and the sewage treatment flow is short, the energy consumption is low, the operation management is convenient and can guarantee purifying effect. The number of the movable equipment is small (the main equipment is a fan and a clean water pump), the operation cost is low, the operation and the management are convenient, and the operation is stable and reliable.

It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications of the embodiments described herein, or the equivalent structure or equivalent process changes made by the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the protection scope of the present invention.

Claims

1. A buried rural domestic sewage treatment integrated device is characterized by comprising a grid well (100), an anoxic tank (200), a contact oxidation tank (300), a horizontal flow sedimentation tank (400), a clean water tank (500), an underflow artificial wetland (600) and a device room (700); the grating well (100) is arranged below the ground, is positioned on the left side of the anoxic tank (200) and is higher than the anoxic tank (200), and the grating well (100) is communicated with a sewage inlet pipe, the ground and the anoxic tank (200); the anoxic tank (200), the contact oxidation tank (300), the horizontal sedimentation tank (400) and the clean water tank (500) are sequentially and horizontally arranged from left to right and are communicated in series, and are all buried underground; the subsurface flow constructed wetland (600) is positioned above the grid well (100), the anoxic tank (200), the contact oxidation tank (300), the horizontal flow sedimentation tank (400) and the clean water tank (500); the equipment room (700) is arranged on the ground, and a medicine supply device (720) and an air supply device (710) are arranged in the equipment room (700); the medicine supply device (720) supplies medicine to the contact oxidation pond (300) through a medicine supply pipe (310); the gas supply device (710) is communicated with the contact oxidation pond (300) through a first air pipe (320) to supply gas to the contact oxidation pond; the horizontal flow sedimentation tank (400) is internally provided with an air lifting device (420), the air lifting device (420) is communicated with the anoxic tank (200) through an air-water mixed liquid pipe (421) to reflux mixed liquid to the anoxic tank, and the air supply device (710) supplies air to the air lifting device (420) through a second air pipe (410) to drive the mixed liquid to reflux; and a clear water lifting pump (510) is arranged in the clear water tank (500), and the clear water lifting pump (510) guides clear water into the subsurface flow artificial wetland (600) through a clear water pipe.

2. The integrated buried rural domestic sewage treatment equipment of claim 1, wherein the left side of the grid well (100) is communicated with a sewage pipe, the upper side of the grid well is communicated with the ground, and the lower part of the right side of the grid well is communicated with the upper part of the left side of the anoxic tank (200).

3. The integrated equipment for underground rural domestic sewage treatment according to claim 1, wherein a stainless steel artificial grating (110) is arranged in the grating well (100); a first filler bracket (210) and a first biological filler (220) are arranged in the anoxic tank (200); the contact oxidation pond (300) is equipped with second filler support (330) and second biological filler (340), second biological filler (340) below is equipped with micropore aerator (350), air feeder (710) pass through first air pipe (320) are connected micropore aerator (350) are in order to supply air to it.

4. The buried rural domestic sewage treatment integrated equipment according to claim 1, wherein a plurality of sludge hoppers (430) are arranged in the horizontal sedimentation tank (400), and each sludge hopper (430) is provided with the air lifting device (420) and communicated with the second air pipe (410).

5. The integrated equipment for underground rural domestic sewage treatment according to claim 4, wherein the gas supply device (710) comprises a blower (711), a manual regulating valve (712) and an automatic control valve (713); the blower (711) connects the first air tube (320) and the second air tube (410); the pipelines of the first air pipe (320) and the second air pipe (410) are provided with the regulating valves to control the air quantity; the second air pipe (410) is also provided with the automatic control valve (713) to control the on-off of the pipe.

6. The integrated buried rural domestic sewage treatment equipment of claim 1, wherein the chemical supply device (720) comprises a dephosphorization chemical storage barrel (721) and a dosing metering pump (722).

7. The buried rural domestic sewage treatment integrated equipment according to claim 1, wherein plants (610), a soil layer (620), a wetland water distribution pipe (630), a wetland packing layer (640) and a wetland water outlet pipe (650) are arranged in the subsurface flow constructed wetland (600); said plants (610) being planted on said soil layer (620) and above the ground; the wetland water distribution pipe (630) is communicated with the clean water pipe and is embedded in the soil layer (620); the soil layer (620) is laid above the wetland filler layer (640); one section of the wetland water outlet pipe (650) is embedded at the bottom of the wetland packing layer (640), and the other section extends upwards to extend out of the ground; the clean water is purified again by the soil layer (620) and the wetland packing layer (640) and then flows out through the wetland water outlet pipe (650).

8. The buried rural domestic sewage treatment integrated equipment according to claim 7, wherein the subsurface flow constructed wetland (600) is arranged in a wetland holding tank which is positioned above the contact oxidation tank (300), the horizontal flow sedimentation tank (400) and the clean water tank (500); the equipment room (700) is positioned above the anoxic tank (200).

9. The buried rural domestic sewage treatment integrated equipment according to claim 8, wherein the grid well (100), the anoxic tank (200), the contact oxidation tank (300), the horizontal sedimentation tank (400), the clean water tank (500) and the wetland holding tank are of concrete type integrated design.

10. The integrated underground rural domestic sewage treatment equipment according to any one of claims 1-9, wherein the reflux ratio of the horizontal flow sedimentation tank (400) to the anoxic tank (200) for refluxing the mixed liquor is configured to be 500-800%.