Domestic sewage treatment system for plateau agricultural and pastoral areas

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a domestic sewage treatment system for plateau agricultural and pastoral areas, which comprises an oil separation tank, a self-rotating slag removal grating device, a fluidized bed separator and a drying device. Sewage automatically flows into the self-rotating slag removal grating device from the oil separation tank, scum in the sewage is filtered by the grating cylinder, the sewage filtered by the grating cylinder enters the boiling bed separator through the water pump for treatment, and sand grains, suspended solids and organic matters in the sewage are removed by the boiling bed separator; sand grains, suspended solids and organic matters generated by the fluidized bed separator are conveyed to the drying device for drying treatment, so that the treatment of the domestic sewage is completed. The treatment system does not have a treatment pond which is inconvenient to carry and is made of concrete, and adopts an assembled combined structure, so that the formed equipment can be carried, the problems of carrying and mounting are effectively solved, and the treatment system is particularly suitable for being used in plateau agricultural and pastoral areas.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field especially relates to a domestic sewage treatment system for plateau farming and pastoral areas. BACKGROUND

[0002] With the rapid development of western economy, the production activities of plateau pastoral areas are strengthened, and the generation of domestic sewage is rapidly increasing. The plateau pastoral areas have the characteristics of less population and seasonal movement. The traditional fixed small-scale decentralized domestic sewage treatment system is difficult to install and operate, especially the treatment tank made of concrete cannot be effectively moved with nomadism, which is very inconvenient to use in plateau farming and pastoral areas. CONTENT OF UTILITY MODEL

[0003] The utility model solves the technical problem to provide a domestic sewage treatment system for plateau farming and pastoral areas which is convenient to use and move.

[0004] The utility model adopts the technical scheme that the domestic sewage treatment system for plateau farming and pastoral areas comprises an oil separation tank, a self-rotating slag cleaning grid device, a boiling bed separator and a drying device, and the oil separation tank, the self-rotating slag cleaning grid device, the boiling bed separator and the drying device are connected in sequence.

[0005] The self-rotating slag cleaning grid device comprises a speed reducer, a grid cylinder, a horizontal rotating shaft, a water collecting disc with an upper opening, a vertical water conveying pipe, a horizontal water conveying pipe, a slag collecting tank with an upper opening and a support frame, the horizontal rotating shaft is arranged in a horizontal rotating mode on the support frame, the grid cylinder is fixedly sleeved on the horizontal rotating shaft, the output shaft of the speed reducer is connected with the horizontal rotating shaft, the grid cylinder is arranged in the slag collecting tank, the support frame is located on the two sides of the slag collecting tank, the water collecting disc is arranged in the grid cylinder in a horizontal mode, the water collecting disc is used for collecting sewage filtered through the grid cylinder, one end of the vertical water conveying pipe is connected with the bottom of the water collecting disc in communication, one end of the horizontal water conveying pipe is connected with the other end of the vertical water conveying pipe in communication, the other end of the horizontal water conveying pipe is arranged through the side of the grid cylinder and is rotatably connected with the side of the grid cylinder, the inside of the water collecting disc comprises a cuboid part and a conical frustum part with a large upper part and a small lower part, the cuboid part is connected and arranged above the conical frustum part, a slag guide plate is arranged on the inner surface of the bottom of the slag collecting tank, the upper surface of the slag guide plate is a slag guide inclined surface, and an anti-skid protrusion is arranged on the outer surface of the bottom of the slag collecting tank.

[0006] The boiling bed separator comprises a shell, a water inlet, a water outlet, a separation medium bed layer and a discharge distributor, the water inlet is arranged at the top of the shell, the water inlet is connected with the other end of the horizontal water conveying pipe in communication, the water outlet is arranged at the bottom of the shell, the separation medium bed layer and the discharge distributor are arranged in the shell, and the separation medium bed layer is arranged on the discharge distributor.

[0007] The first valve is arranged at the water inlet, the second valve is arranged at the water outlet, the boiling bed separator further comprises a gas inlet, a cleaning water inlet and a cyclone three-phase separator, the gas inlet and the cleaning water inlet are arranged at the bottom of the shell, a third valve is arranged at the gas inlet, a fourth valve is arranged at the cleaning water inlet, the cyclone three-phase separator is arranged in the shell and located at the top of the shell, the cyclone three-phase separator comprises a body, a feeding port, a blowdown port and a gas outlet, the feeding port is arranged at the bottom of the body, the gas outlet is arranged at the top of the body, the blowdown port is arranged at the side of the body, a fifth valve is arranged at the feeding port, a sixth valve is arranged at the blowdown port, and a seventh valve is arranged at the gas outlet.

[0008] Further, the solar photovoltaic power generation device is used for supplying power to the domestic sewage treatment system.

[0009] Further, the discharge distributor comprises a partition plate and a water cap arranged on the partition plate, and the partition plate is horizontally fixed in the shell.

[0010] Further, the horizontal rotating shaft is arranged on the support frame through the first bearing.

[0011] Further, the second bearing is arranged between the horizontal water conveying pipe and the side of the grid cylinder.

[0012] Further, the drying device comprises two cyclone separators connected in series.

[0013] The domestic sewage treatment system of the utility model is used for highland farming and pastoral areas, and comprises an oil separation tank, a self-rotating slag cleaning grid device, a boiling bed separator and a drying device.

[0014] The utility model discloses a domestic sewage treatment system does not exist inconveniently carrying concrete made treatment pool, adopts the structure of assembled combination, the equipment formed can be carried, effectively solved the problem of carrying, installation, especially suitable for plateau farming and pastoral areas use, and, sewage from the oil separation tank self -flow enters the self -spin clear residue grid device, and the suspended solids are intercepted by the grid cylinder and form the grid residue, and the grid cylinder rotates under the drive of the speed reducer, and the suspended solids are automatically dropped from the grid cylinder in this process, thereby realizing the purpose of separating from sewage, and this operation mode can avoid the blockage problem of the traditional fixed grid caused by intercepting suspended solids, and the boiling bed separator reduces the land area of domestic sewage treatment system, and the boiling bed separator is convenient to operate and use, and the structure is simpler, and a large amount of stench gas is not produced in the treatment process, improves the clean environment, and the separation medium bed layer can be repeatedly used, and the treatment cost is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the flow structure schematic diagram of domestic sewage treatment system;

[0016] Figure 2 It is the structure schematic diagram of self -spin clear residue grid device;

[0017] Figure 3 It is the structure schematic diagram of water collecting disc;

[0018] Figure 4 It is the structure schematic diagram of boiling bed separator;

[0019] Figure 5 It is the schematic diagram of boiling bed separator cleaning state;

[0020] Figure 6 It is the structure schematic diagram of cyclone three -phase separator;

[0021] Components, parts and numbers in the drawing: oil separation tank 1, self -spin clear residue grid device 2, speed reducer 21, grid cylinder 22, horizontal rotating shaft 23, water collecting disc 24, cuboid part 241, frustum part 242, vertical water delivery pipe 25, horizontal water delivery pipe 26, residue collecting tank 27, support frame 28, residue guide plate 29, boiling bed separator 3, shell 31, water inlet 32, water outlet 33, separation medium bed layer 34, discharge distributor 35, partition plate 351, water cap 352, gas inlet 36, cleaning water inlet 37, cyclone three -phase separator 38, body 381, feed inlet 382, blowdown 383, gas outlet 384, drying device 4, cyclone separator 41. DETAILED DESCRIPTION

[0022] The utility model is further explained below in combination with the drawings and specific embodiment.

[0023] As Figures 1 to 6As shown, the utility model is used to the domestic sewage treatment system of plateau farming and pastoral area, including oil separation tank 1, spin clear residue grid device 2, boiling bed separator 3 and drying device 4, oil separation tank 1, spin clear residue grid device 2, boiling bed separator 3, drying device 4 are connected in proper order;

[0024] Spin clear residue grid device 2 includes speed reducer motor 21, grid cylinder 22, horizontal rotating shaft 23, water collecting tray 24 of upper end opening, vertical water delivery pipe 25, horizontal water delivery pipe 26, residue collecting tank 27 of upper end opening and support frame 28, horizontal rotating shaft 23 is horizontally rotatably arranged on support frame 28, grid cylinder 22 is fixedly sleeved on horizontal rotating shaft 23, the output shaft of speed reducer motor 21 is connected with horizontal rotating shaft 23, grid cylinder 22 is arranged in residue collecting tank 27, support frame 28 is located on both sides of residue collecting tank 27, water collecting tray 24 is horizontally arranged in grid cylinder 22, water collecting tray 24 is used to collect the sewage after filtering through grid cylinder 22, one end of vertical water delivery pipe 25 is communicated with the bottom of water collecting tray 24, one end of horizontal water delivery pipe 26 is communicated with the other end of vertical water delivery pipe 25, the other end of horizontal water delivery pipe 26 is arranged through the side of grid cylinder 22, and horizontal water delivery pipe 26 is rotatably connected with the side of grid cylinder 22, the inside of water collecting tray 24 includes cuboid part 241 and frustum part 242 of big up small down, cuboid part 241 is connected and arranged above frustum part 242, residue collecting tank 27 bottom inner surface is provided with residue guide plate 29, the upper surface of residue guide plate 29 is residue guide inclined plane, residue collecting tank 27 bottom outer surface is provided with anti -skid protrusion;

[0025] Boiling bed separator 3 includes shell 31, water inlet 32, water outlet 33, separation medium bed 34 and discharge distributor 35, water inlet 32 is arranged at the top of shell 31, water inlet 32 is communicated with the other end of horizontal water delivery pipe 26, water outlet 33 is arranged at the bottom of shell 31, separation medium bed 34 and discharge distributor 35 are arranged in shell 31, and separation medium bed 34 is arranged on discharge distributor 35;

[0026] The first valve is arranged at the water inlet 32, the second valve is arranged at the water outlet 33, the boiling bed separator 3 further comprises a gas inlet 36, a cleaning water inlet 37 and a cyclone three-phase separator 38, the gas inlet 36 and the cleaning water inlet 37 are arranged at the bottom of the shell 31, the third valve is arranged at the gas inlet 36, the fourth valve is arranged at the cleaning water inlet 37, the cyclone three-phase separator 38 is arranged in the shell 31 and located at the top of the shell 31, the cyclone three-phase separator 38 comprises a body 381, a feeding port 382, a blowdown port 383 and a gas outlet 384, the feeding port 382 is arranged at the bottom of the body 381, the gas outlet 384 is arranged at the top of the body 381, and the blowdown port 383 is arranged at the side of the body 381, the fifth valve is arranged at the feeding port 382, the sixth valve is arranged at the blowdown port 383, and the seventh valve is arranged at the gas outlet 384.

[0027] When the domestic sewage is treated, the sewage flows into the oil separation tank 1, and the floating oil in the sewage is removed, and then the sewage flows into the self-rotating slag cleaning and grating device 2 from the oil separation tank 1, the floating slag in the sewage is filtered by the grating cylinder 22, the formed grating slag is uniformly treated with the domestic solid waste, the sewage filtered by the grating cylinder 22 is pumped into the boiling bed separator 3 for treatment, the sand particles, the solid suspended matter and the organic matter in the sewage are removed by the boiling bed separator 3, and the sand particles, the solid suspended matter and the organic matter generated by the boiling bed separator 3 are transported to the drying device 4 for drying treatment, so that the treatment of the domestic sewage is completed.

[0028] The working principle of the self-rotating slag cleaning and grating device 2 is as follows: Figure 2 As shown in the figure, the speed reducer motor 21 works, the output shaft of the speed reducer motor 21 rotates to drive the horizontal rotating shaft 23 to rotate, and the horizontal rotating shaft 23 drives the grating cylinder 22 to rotate; the sewage flows into the self-rotating slag cleaning and grating device 2 from the oil separation tank 1, and then the sewage passes through the outer surface of the grating cylinder 22 and falls into the water collecting disc 24, and then is transported to the boiling bed separator 3 through the vertical water conveying pipe 25 and the horizontal water conveying pipe 26, the floating slag in the sewage is blocked by the grating cylinder 22 and accumulates on the outer surface of the grating cylinder 22, and when the grating cylinder 22 rotates, the floating slag falls from the grating cylinder 22 to the slag collecting tank 27. The grating cylinder 22 rotates under the drive of the speed reducer motor 21, and in this process, the suspended matter intercepted in the grating cylinder 22 automatically falls off from the grating cylinder 22, so as to realize the purpose of separation from the sewage. This operation mode can avoid the blockage problem caused by the suspended matter intercepted by the traditional fixed grating.

[0029] The rectangular portion 241 facilitates the collection of wastewater after it passes through the outer surface of the grille tube 22. The frustum 242 reduces the possibility of wastewater accumulating in the water collection pan 24, facilitating its removal. The slag guide plate 29 allows trapped suspended matter to flow to the edge of the slag collection box 27, facilitating its removal. The bottom outer surface of the slag collection box 27 is provided with anti-slip projections, which reduce the possibility of the slag collection box 27 slipping during use and improve its stability.

[0030] In order to facilitate the grille drum 22 to rotate around the horizontal rotation shaft 23, the horizontal rotation shaft 23 is arranged on the support frame 28 through a first bearing. A second bearing is arranged between the horizontal water pipe 26 and the side of the grille drum 22.

[0031] The function of the fluidized bed separator 3 is to remove sand, suspended solids and organic matter in the sewage so that the sewage meets the treatment requirements. Figure 4 As shown, the separation medium bed 34 is a granular separation medium, which is preferably spherical, with a particle size of 0.1-0.2 mm. The separation medium bed 34 is composed of one or more granular separation media, and its material is an organic or inorganic material with strong adsorption for pollutants in sewage, especially has a strong adsorption effect on sand particles, suspended solids and organic matter in sewage, such as quartz sand, anthracite, activated carbon, etc. The sewage enters the shell 31 from the water inlet 32 ​​through the horizontal water pipe 26, and the sewage passes through the separation medium bed 34 and the discharge distributor 35 in turn, and finally goes out from the water outlet 33. The separation medium bed 34 intercepts and adsorbs the sand particles, suspended solids and organic matter in the sewage, so that the sand particles, suspended solids and organic matter in the sewage are gradually reduced until the treatment requirements are met.

[0032] For ease of installation and use, Figure 4 As shown, the discharge distributor 35 includes a partition plate 351 and a water cap 352 arranged on the partition plate 351. The partition plate 351 is fixed horizontally in the shell 31. After the sewage passes through the separation medium bed 34, it goes out through the water cap 352.

[0033] After the fluidized bed separator 3 has been used for a period of time, a lot of pollutants are adsorbed on the surface of the separation medium in the separation medium bed 34. It is necessary to backwash the separation medium bed 34 to regenerate the separation medium and achieve the purpose of reusing the separation medium. The backwashing process is as follows: close the first valve and the second valve, open the third valve, the fourth valve, the fifth valve, the sixth valve, and the seventh valve, and pass a cleaning water with a certain pressure into the shell 31 from the cleaning water inlet 37, and a gas with a certain pressure into the shell 31 from the gas inlet 36. After the cleaning water and gas pass through the discharge distributor 35, the granular separation medium boils from bottom to top, as shown in FIG. Figure 5The pollutants adsorbed on the separation medium are separated from the separation medium, and the separated separation medium and pollutants enter the body 381 of the cyclone three-phase separator 38 from the feed port 382, and the separation medium and the pollutants are completely separated in the body 381 by the coupling of the particle rotation and revolution, and the pollutants are discharged from the pollutant discharge port 383 and enter the drying device 4 for treatment, the gas is discharged from the gas outlet 384, and the separation medium flows back to the discharge distributor 35 to form the separation medium bed 34 again. After the regeneration of the separation medium bed 34 is completed, the third valve, the fourth valve, the fifth valve, the sixth valve and the seventh valve are closed, and the first valve and the second valve are opened, so that the sewage treatment can be performed again. In order to facilitate use, the above-mentioned valves are controlled by a controller.

[0034] In order to ensure that the sewage can be transported into the boiling bed separator 3, a water pump can be arranged on the horizontal water conveying pipe 26.

[0035] Since the power supply in the plateau farming and pastoral areas is also very tight, in order to solve the problem, the utility model also provides a solar photovoltaic power generation device, which is used for power supply of the domestic sewage treatment system.

[0036] The drying device 4 is used for drying the sand particles, solid suspensions and organic matters generated by the boiling bed separator 3, and the drying device 4 can be a double-layer natural ventilation porous funnel, a drying machine and the like, but a more preferred structure of the drying device 4 of the utility model is that two cyclone separators 41 are connected in series, the cyclone separator 41 works, and a high-speed rotating field is generated in the cyclone separator 41, under the action of the high-speed rotating field, the solid particles generate high-speed rotation and revolution in the high-speed rotating field, and the centrifugal force generated thereby overcomes the capillary resistance of the adsorbed water between the solid particles, so that the solid particles in the sludge are gradually separated from the water, and the drying purpose is achieved. The dried solid particles and the grid slag can be subjected to composting fermentation treatment.

[0037] In summary, the domestic sewage treatment system of the utility model does not have a treatment tank made of concrete which is inconvenient to carry, adopts a spliced and combined structure, and the formed equipment can be carried, so that the carrying and installation problems are effectively solved, and the utility model is particularly suitable for use in plateau farming and pastoral areas.

Claims

1. A domestic sewage treatment system for plateau farming and pastoral areas, characterized in that: The device comprises an oil separation tank (1), a self-rotating slag cleaning grid device (2), a boiling bed separator (3) and a drying device (4), and the oil separation tank (1), the self-rotating slag cleaning grid device (2), the boiling bed separator (3) and the drying device (4) are sequentially connected; The self-rotating slag cleaning grid device (2) comprises a speed reducer motor (21), a grid cylinder (22), a horizontal rotating shaft (23), a water collecting tray (24) with an upper opening, a vertical water conveying pipe (25), a horizontal water conveying pipe (26), a slag collecting tank (27) with an upper opening and a support frame (28), the horizontal rotating shaft (23) is arranged in a horizontal rotating mode on the support frame (28), the grid cylinder (22) is fixedly sleeved on the horizontal rotating shaft (23), the output shaft of the speed reducer motor (21) is connected with the horizontal rotating shaft (23), the grid cylinder (22) is arranged in the slag collecting tank (27), the support frame (28) is located on both sides of the slag collecting tank (27), the water collecting tray (24) is arranged in the grid cylinder (22) in a horizontal mode, the water collecting tray (24) is used for collecting sewage filtered by the grid cylinder (22), one end of the vertical water conveying pipe (25) is connected with the bottom of the water collecting tray (24), one end of the horizontal water conveying pipe (26) is connected with the other end of the vertical water conveying pipe (25), the other end of the horizontal water conveying pipe (26) is arranged through the side of the grid cylinder (22) and is rotatably connected with the side of the grid cylinder (22), the inside of the water collecting tray (24) comprises a cuboid part (241) and a conical frustum part (242) with a large upper part and a small lower part, the cuboid part (241) is connected and arranged above the conical frustum part (242), a slag guiding plate (29) is arranged on the bottom inner surface of the slag collecting tank (27), the upper surface of the slag guiding plate (29) is a slag guiding inclined surface, and anti-skid protrusions are arranged on the bottom outer surface of the slag collecting tank (27); The boiling bed separator (3) comprises a shell (31), a water inlet (32), a water outlet (33), a separation medium bed (34) and a discharge distributor (35), the water inlet (32) is arranged on the top of the shell (31), the water inlet (32) is connected with the other end of the horizontal water conveying pipe (26), the water outlet (33) is arranged on the bottom of the shell (31), the separation medium bed (34) and the discharge distributor (35) are arranged in the shell (31), and the separation medium bed (34) is arranged on the discharge distributor (35); The first valve is arranged at the water inlet (32), the second valve is arranged at the water outlet (33), the boiling bed separator (3) further comprises a gas inlet (36), a cleaning water inlet (37) and a cyclone three-phase separator (38), the gas inlet (36) and the cleaning water inlet (37) are arranged at the bottom of the shell (31), the third valve is arranged at the gas inlet (36), the fourth valve is arranged at the cleaning water inlet (37), the cyclone three-phase separator (38) is arranged in the shell (31) and located at the top of the shell (31), the cyclone three-phase separator (38) comprises a body (381), a feeding port (382), a blowdown port (383) and a gas outlet (384), the feeding port (382) is arranged at the bottom of the body (381), the gas outlet (384) is arranged at the top of the body (381), the blowdown port (383) is arranged at the side of the body (381), the fifth valve is arranged at the feeding port (382), the sixth valve is arranged at the blowdown port (383), and the seventh valve is arranged at the gas outlet (384).

2. The domestic sewage treatment system for the plateau farming and pastoral areas according to claim 1, characterized in that: The solar photovoltaic power generation device is used for supplying power to the domestic sewage treatment system.

3. The domestic sewage treatment system for the plateau farming and pastoral areas according to claim 1, characterized in that: The discharge distributor (35) comprises a partition plate (351) and a water cap (352) arranged on the partition plate (351), and the partition plate (351) is horizontally fixed in the shell (31).

4. The domestic sewage treatment system for the plateau farming and pastoral areas according to claim 1, characterized in that: The horizontal rotating shaft (23) is arranged on the support frame (28) through the first bearing.

5. The domestic sewage treatment system for the plateau farming and pastoral areas according to claim 1, characterized in that: The second bearing is arranged between the horizontal water conveying pipe (26) and the side of the grid cylinder (22).

6. The domestic sewage treatment system for plateau farming and pastoral areas according to any one of claims 1 to 5, characterized in that: The drying device (4) comprises two cyclone separators (41) connected in series. The first valve is arranged at the water inlet (32), the second valve is arranged at the water outlet (33), the boiling bed separator (3) further comprises a gas inlet (36), a cleaning water inlet (37) and a cyclone three-phase separator (38), the gas inlet (36) and the cleaning water inlet (37) are arranged at the bottom of the shell (31), the third valve is arranged at the gas inlet (36), the fourth valve is arranged at the cleaning water inlet (37), the cyclone three-phase separator (38) is arranged in the shell (31) and located at the top of the shell (31), the cyclone three-phase separator (38) comprises a body (381), a feeding port (382), a blowdown port (383) and a gas outlet (384), the feeding port (382) is arranged at the bottom of the body (381), the gas outlet (384) is arranged at the top of the body (381), the blowdown port (383) is arranged at the side of the body (381), the fifth valve is arranged at the feeding port (382), the sixth valve is arranged at the blowdown port (383), and the seventh valve is arranged at the gas outlet (384).

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