Wastewater treatment device for environmental protection engineering construction

Abstract

The utility model relates to the field of sewage treatment discloses a wastewater treatment device for environmental protection engineering construction, including sedimentation tank, the sedimentation tank top is connected with the smellproof top cover, is provided with first reagent feeding device on the sedimentation tank side wall, is provided with lifting filter device in the sedimentation tank, the sedimentation tank bottom is connected with biochemical treatment pond through the inclined pipeline, is provided with second reagent feeding device on the biochemical treatment pond side wall, is provided with agitator in the biochemical treatment pond bottom, and the water pump is connected with the pipeline in the biochemical treatment pond bottom. The utility model has the advantages and effects, through lifting filter device, the flocculation that reacts after depositing in the pool bottom is lifted to the ground above, and it is convenient for operating personnel to clean, adjusts wastewater pH value through second reagent feeding device, so that it reaches the discharge standard.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a wastewater treatment device for environmental engineering construction. Background Technology

[0002] After dehydrating animal manure from farms to produce environmentally friendly fertilizer, a certain amount of wastewater is generated. This wastewater contains a large number of bacteria and nutrients. If it is discharged directly into nature, it will cause eutrophication of water bodies and excessive bacterial content. Therefore, it must be treated to remove its harmful components before it can be discharged.

[0003] The conventional methods for treating manure and sewage are to separate the solid and liquid parts of the manure and then transport it to a biogas digester for fermentation, or to transport the sewage to a sewage treatment plant for unified treatment. However, these methods require the construction of separate pipelines to the treatment plant, which results in a low return on investment for small farms when the treatment volume is small. At the same time, the sedimentation time in the biogas digester is also long, resulting in a slow treatment speed. Utility Model Content

[0004] The purpose of this invention is to provide a wastewater treatment device for environmental engineering construction, which has the effect of separating impurities in fecal sewage after flocculation.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a wastewater treatment device for environmental engineering construction, including a sedimentation tank, an odor-proof top cover connected to the top of the sedimentation tank, a first agent dosing device provided on the side wall of the sedimentation tank, a lifting filter device provided inside the sedimentation tank, a biochemical treatment tank connected to the bottom of the sedimentation tank through an inclined pipe, a second agent dosing device provided on the side wall of the biochemical treatment tank, an agitation device provided at the bottom of the biochemical treatment tank, and a water pump connected to the bottom pipe of the biochemical treatment tank.

[0006] By adopting the above technical solution, fecal sewage is centrally discharged into a sedimentation tank. An odor-proof cover prevents odors from escaping and affecting the surrounding environment and human health. The first chemical dosing device can add flocculant to the sedimentation tank to improve water quality. The lifting filter device is raised to be parallel to the ground for easy handling of flocculants. The bottom of the sedimentation tank is connected to a biological treatment tank through an inclined pipe, preventing flocculants from entering the biological treatment tank. The second chemical dosing device can add chemicals to the biological treatment tank to improve the pH value of the water. The stirring device can ensure that the water and chemicals are in full contact, accelerating the reaction rate. The pump pumps the improved water to the ground for easy discharge.

[0007] A further feature of this invention is that the lifting and filtering device includes a selective filter plate horizontally arranged in the sedimentation tank, the edge of the selective filter plate being attached to the side wall of the sedimentation tank, a set of lifting mechanisms being provided at each of the four corners of the bottom of the selective filter plate, and an inclined mechanism being provided between the two sets of lifting mechanisms located near the side of the biochemical treatment tank.

[0008] By adopting the above technical solution, the filter plate can be selected to prevent flocculation from passing through. At the same time, the switch can be used to select whether water can pass through. The lifting mechanism can raise the filter plate, and the tilting mechanism can tilt the filter plate in one direction.

[0009] A further feature of this invention is that the lifting mechanism includes a connecting seat fixed at the bottom corner of the selective filter plate, and a lifting hydraulic rod is provided below the sedimentation tank perpendicular to the connecting seat. The connecting seat and the top of the lifting hydraulic rod are rotatably connected.

[0010] The present invention is further configured such that: the tilting mechanism includes two sets of double connecting rods disposed on both sides of the connecting seat, the upper end of the double connecting rods being rotatably connected to the bottom of the connecting seat, and the lower end being rotatably connected to the top of the lifting hydraulic rod, a connecting rod limiting screw being transversely disposed in the middle of the double connecting rods, and a connecting rod drive motor being disposed at the end of the connecting rod limiting screw, the output end of the connecting rod drive motor being able to drive the limiting nut disposed on the connecting rod limiting screw to rotate, so that the double connecting rods open and close relative to each other.

[0011] The present invention is further configured such that: the first agent dispensing device includes a first agent storage tank disposed below the ground, a sealed first dosing port is provided above the first agent storage tank, and a telescopic dosing nozzle extending into the sedimentation tank is provided on the side of the first agent storage tank.

[0012] By adopting the above technical solution, the first chemical storage tank is placed underground to keep the ground level. Chemicals can be added through the first dosing port opened on the ground. In order to prevent the lifting filter device from hitting the spraying position when it is raised and lowered, a telescopic dosing nozzle is set to extend into the sedimentation tank. The telescopic dosing nozzle can be retracted into the sedimentation tank wall.

[0013] A further feature of this invention is that the telescopic dosing nozzle includes a spray pipe horizontally disposed in the sedimentation tank, the spray pipe having several spray nozzles, a telescopic rack being disposed above the spray pipe, and a telescopic gear and a motor for driving rotation being disposed at the root of the spray pipe, so that the telescopic dosing nozzle can retract into the first agent storage tank until the end of the telescopic dosing nozzle is flush with the side wall of the sedimentation tank.

[0014] A further feature of this invention is that the agitation device includes an agitator blade rotatably connected to the bottom of the biochemical treatment tank, an agitator motor for driving rotation is provided below the agitator blade, and a waterproof housing is provided outside the agitator motor.

[0015] By adopting the above technical solution, the agitating fan blades can ensure full contact between the reagent and the water, thereby accelerating the reaction rate.

[0016] A further feature of this invention is that the second agent dispensing device includes a second agent storage tank located below ground level, a second dosing port being provided above the second agent storage tank, and a second dosing nozzle extending into the biochemical treatment tank being provided on the side of the second agent storage tank.

[0017] A further feature of this invention is that the bottom of the inclined pipe opening on the side wall of the biochemical treatment tank is higher than the top of the pipe opening on the side wall of the sedimentation tank.

[0018] By adopting the above technical solution, it is possible to prevent flocculation in the sedimentation tank from entering the biochemical treatment tank.

[0019] A further feature of this invention is that the water pump can be detachably fixed above the ground.

[0020] By adopting the above technical solution, the water pump can be disassembled and stored when not in use, keeping the ground flat and facilitating the passage of vehicles and people.

[0021] The beneficial effects of this utility model are:

[0022] 1. The flocculated material that settles at the bottom of the sedimentation tank after the reaction is lifted to the ground level by a lifting and filtering device, making it convenient for operators to clean it.

[0023] 2. pH adjustment agents are added to the biological treatment tank through the second agent dosing device to improve the water quality for easier discharge. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of a wastewater treatment device for environmental engineering construction according to this utility model;

[0026] Figure 2 This is a top view of a wastewater treatment device for environmental engineering construction according to this utility model;

[0027] Figure 3 This is a front sectional view of a wastewater treatment device for environmental engineering construction according to this utility model;

[0028] Figure 4This is a partial schematic diagram of the tilting mechanism of this utility model;

[0029] Figure 5 This is a partial schematic diagram of the first drug dispensing device of this utility model.

[0030] In the diagram, 1. Sedimentation tank; 11. First reagent dosing device; 110. First dosing port; 111. First reagent storage tank; 112. Telescopic dosing nozzle; 113. Spray pipe; 114. Telescopic rack; 115. Telescopic gear; 12. Odor-proof top cover; 13. Inclined pipe; 2. Lifting and lowering filter device; 21. Selective filter plate; 22. Lifting mechanism; 221. Connecting seat; 222. Lifting hydraulic rod; 23. Inclined mechanism; 231. Double connecting rod; 232. Connecting rod limit screw; 233. Connecting rod drive motor; 234. Limit nut; 3. Biochemical treatment tank; 31. Second reagent dosing device; 311. Second reagent storage tank; 312. Second dosing port; 313. Second dosing nozzle; 32. Water pump; 4. Agitator; 41. Agitator blade. Detailed Implementation

[0031] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0032] This utility model embodiment specifically provides a wastewater treatment device for environmental engineering construction, including a sedimentation tank 1, an odor-proof top cover 12 connected to the top of the sedimentation tank 1, a first agent dosing device 11 installed on the side wall of the sedimentation tank 1, a lifting filter device 2 installed inside the sedimentation tank 1, a biochemical treatment tank 3 connected to the bottom of the sedimentation tank 1 through an inclined pipe 13, a second agent dosing device 31 installed on the side wall of the biochemical treatment tank 3, an agitation device 4 installed at the bottom of the biochemical treatment tank 3, and a water pump 32 connected to the bottom pipe of the biochemical treatment tank 3.

[0033] To maintain environmental aesthetics and isolate odors, wastewater sedimentation tanks are typically built underground and sealed off by an odor-proof cover 12. Since the sediment after adding flocculant to the wastewater accumulates in sedimentation tank 1 and cannot be discharged without treatment, this device includes a lifting filter 2 in sedimentation tank 1. When inactive, the lifting filter 2 is located at the bottom of sedimentation tank 1. When flocculant is added to sedimentation tank 1 via the first reagent dosing device 11, the flocculants will rise above the lifting filter 2. Activating the lifting filter 2 then pushes the flocculants out of sedimentation tank 1. At the very top, for easy cleaning by the operator, the sedimentation tank 1 is connected to the biological treatment tank 3 via an inclined pipe 13 to prevent flocculation from entering the biological treatment tank 3. A second agent dosing device 31 for storing agents to adjust the pH value of wastewater is also installed on the side wall of the biological treatment tank 3. After the pH value of the wastewater is adjusted, it can be directly discharged into the natural environment. In order to further accelerate the reaction speed between the agent and the wastewater, an agitator 4 is installed at the bottom of the biological treatment tank 3. The agitator can make the agent and the wastewater mix more thoroughly. The treated water is pumped to the ground for discharge by a pump 32.

[0034] The lifting and filtering device 2 includes a selective filter plate 21 horizontally installed in the sedimentation tank 1. The edge of the selective filter plate 21 is attached to the side wall of the sedimentation tank 1. A set of lifting mechanisms 22 is provided at each of the four corners of the bottom of the selective filter plate 21. An inclined mechanism 23 is also provided between the two sets of lifting mechanisms 22 located near the side of the biochemical treatment tank 3.

[0035] To further facilitate the cleaning of condensate accumulated on the selective filter plate 21, a set of lifting mechanisms 22 is installed at each of the four corners of the selective filter plate 21. When the operator believes that there is enough condensate accumulated on the selective filter plate 21, the lifting mechanism 22 is activated to raise the selective filter plate 21 until its top surface is flush with the ground. Then, the tilting mechanism 23 is activated to tilt the selective filter plate 21. The condensate will slide to the lower side of the selective filter plate 21 due to gravity. The cleaning device such as a transfer bucket for cleaning debris is set in advance at this position to facilitate the operator to clean the condensate more quickly. Side baffles can also be set on the three sides of the selective filter plate 21 when it is raised to prevent the accumulated condensate from falling out from the sides. The selective filter plate 21 can prevent condensate from passing through, and can also be switched to allow water to pass through or not. The structure of the filter plate can be set with reference to mature existing technical solutions, and its specific internal structure is not within the scope of protection of this utility model.

[0036] Furthermore, the lifting mechanism 22 includes a connecting seat 221 fixed at the bottom corner of the selective filter plate 21, and a lifting hydraulic rod 222 is provided below the sedimentation tank 1 perpendicular to the connecting seat 221. The connecting seat 221 and the top of the lifting hydraulic rod 222 are rotatably connected.

[0037] Further, see attached document. Figure 4 The tilting mechanism 23 includes two sets of double connecting rods 231 arranged on both sides of the connecting seat 221. The upper end of the double connecting rod 231 is rotatably connected to the bottom of the connecting seat 221, and the lower end is rotatably connected to the top of the lifting hydraulic rod 222. The lower part of the lifting hydraulic rod 222 is set in the ground by conventional arrangement. Only a part of it is shown above the ground in the figure. A connecting rod limiting screw 232 is horizontally connected in the middle of the double connecting rod 231. The first end of the connecting rod limiting screw 232 is rotatably connected to the middle of a set of double connecting rods 231. A connecting rod drive motor 233 is provided at the end of the connecting rod limiting screw 232. The connecting rod drive motor 233 is rotatably connected to the middle of another set of double connecting rods 231. The output end of the connecting rod drive motor 233 can drive the limiting nut 234 set on the connecting rod limiting screw 232 to rotate, so that the double connecting rods 231 open and close relative to each other.

[0038] During operation, the lifting hydraulic rods 222 at the four corners of the filter plate 21 are activated, simultaneously raising the filter plate 21 horizontally and at a constant speed until it is level with the ground. Then, the output end of the connecting rod drive motor 233 rotates, causing the limit nut 234 to rotate, thereby reducing the lateral distance between the mating double connecting rods 231 and increasing the height of the double connecting rods 231. Since the filter plate 21 and the connecting seats 221 at the four corners are rotatably connected, the double connecting rods 231 can lift one side of the filter plate 21, making it tilted.

[0039] The first agent dispensing device 11 includes a first agent storage tank 111 located below the ground, a sealed first dosing port 110 on the top of the first agent storage tank 111, and a telescopic dosing nozzle 112 extending into the sedimentation tank 1 on the side of the first agent storage tank 111.

[0040] To maintain the flatness of the ground, the first agent dispensing device 11 is installed underground near the sedimentation tank 1. The first agent dispensing device 11 adds the agent into the sedimentation tank through the first dosing port 110, and at the same time sprays the agent into the sedimentation tank through the telescopic dosing nozzle 112. In order to prevent the added agent from sticking to the tank wall, the telescopic dosing nozzle 112 needs to extend a certain distance into the sedimentation tank. At the same time, in order to prevent the lifting filter device 2 from hitting the nozzle and causing damage when it is raised and lowered, the telescopic dosing nozzle 112 can be retracted into the tank wall until its end is flush with the tank wall when the lifting filter device 2 is raised and lowered.

[0041] Furthermore, the telescopic dosing nozzle 112 includes a spray pipe 113 horizontally arranged in the sedimentation tank 1. The spray pipe 113 has several spray nozzles. A telescopic rack 114 is arranged above the spray pipe 113. A telescopic gear 115 that cooperates with the telescopic rack 114 and a motor that drives the rotation are arranged at the root of the spray pipe 113, so that the telescopic dosing nozzle 112 can be retracted into the first agent storage tank 111 until the end of the telescopic dosing nozzle 112 is flush with the side wall of the sedimentation tank 1.

[0042] In order to allow the telescopic dosing nozzle 112 to retract into the pool wall, a telescopic rack 114 is provided above the dosing pipe 113. The dosing pipe 113 is movably connected to the dosing tank. When the motor drives the telescopic gear 115 to rotate, the telescopic rack 114, which cooperates with the telescopic gear 115, will move back and forth, thereby driving the dosing pipe 113 to extend and retract. The dosing pipe 113 is connected to the pump body set in the first chemical storage tank 111 through a conventional solution. This connection is a conventional technical solution that is easy for those skilled in the art to think of, and will not be described in detail here.

[0043] The stirring device 4 includes a stirring fan blade 41 rotatably connected to the bottom of the biochemical treatment tank 3, a stirring motor for driving rotation is provided below the stirring fan blade 41, and a waterproof shell is provided outside the stirring motor.

[0044] When the agitator blade 41 rotates, it can fully mix the wastewater and the reagent, and accelerate the reaction speed. The waterproof shell can prevent water from entering and damaging the motor. The waterproof shell is a conventional existing technical solution and a common-sense solution that is easy for those skilled in the art to implement.

[0045] The second agent dispensing device 31 includes a second agent storage tank 311 located below the ground, a second dosing port 312 opening above the second agent storage tank 311, and a second dosing nozzle 313 extending into the biochemical treatment tank 3 on the side of the second agent storage tank 311.

[0046] Since there is no lifting device inside the biochemical treatment tank 3, the second dosing nozzle 313 of the second agent dosing device 31 does not need to be extended or retracted and can be directly inserted into the biochemical treatment tank 3.

[0047] During implementation, the bottom of the inclined pipe 13 located on the side wall of the biochemical treatment tank 3 is higher than the top of the pipe located on the side wall of the sedimentation tank 1.

[0048] Since the bottom of the inclined pipe 13 located on the side wall of the biochemical treatment tank 3 is higher than the top of the pipe located on the side wall of the sedimentation tank 1, the flocculation in the sedimentation tank 1 will not enter the biochemical treatment tank 3.

[0049] During implementation, the water pump 32 can be detached and fixed above the ground. When there is too much treated water stored in the biochemical treatment tank 3, the water pump 32 is connected to the pipe extending from the bottom outlet of the biochemical treatment tank 3 to the ground to pump out and discharge the water. When it is not needed, the water pump 32 can also be removed and stored.

[0050] Working principle

[0051] Wastewater is centrally discharged into sedimentation tank 1, with the water level not exceeding the lowest point of the inclined pipe 13 located in biochemical treatment tank 3. The operator uses the first agent dosing device 11 to add flocculant into sedimentation tank 1. At this time, the lifting filter device 2 is located at the bottom of the sedimentation tank, and the selective filter plate 21 allows water to pass through. After the flocculants accumulate to a suitable weight above the selective filter plate 21, the operator controls the telescopic gear 115 to rotate, causing the telescopic rack 114 and spray pipe 113 to retract into the tank wall of sedimentation tank 1 until they are flush with the tank wall. Simultaneously, the lifting hydraulic rods 222 at the four corners are controlled to synchronously and uniformly raise the selective filter plate 21 until its top is flush with the ground. Then, the connecting rod drive motor 233 is activated, causing the limit nut 234 to rotate, which in turn causes the mating double connecting rods 231 to move laterally closer together, increasing their height. The selective filter plate 21 is tilted. At this time, a flocculation transfer device can be installed at the lower tilt of the selective filter plate 21 and the surface of the selective filter plate 21 can be cleaned. Then, the connecting rod drive motor 233 flips to restore the selective filter plate 21 to a horizontal position. The lifting hydraulic rod 222 descends synchronously until the selective filter plate 21 returns to the bottom of the sedimentation tank 1. The selective filter plate 21 is closed to prevent water from passing through. Then, the lifting hydraulic rod 222 is restarted to drive the selective filter plate 21 to rise, so that the water that has completed sedimentation in the sedimentation tank 1 enters the biological treatment tank 3 through the inclined pipe 13. The second agent dosing device 31 is used to add an agent to improve the pH value of the water in the biological treatment tank 3. The agent is thoroughly mixed with the water by rotating the stirring fan blade 41. After the reaction is completed, the water is pumped to the ground by the water pump 31 for discharge.

[0052] The above describes the basic principles, main features, and advantages of this utility model. The standard parts used in this utility model can all be purchased from the market, and the irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art, which will not be described in detail here.

[0053] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0054] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wastewater treatment device for environmental engineering construction, comprising a sedimentation tank (1), wherein an odor-proof top cover (12) is connected above the sedimentation tank (1), characterized in that: The sedimentation tank (1) is provided with a first agent dosing device (11) on its side wall. The sedimentation tank (1) is provided with a lifting filter device (2). The bottom of the sedimentation tank (1) is connected to a biochemical treatment tank (3) through an inclined pipe (13). The biochemical treatment tank (3) is provided with a second agent dosing device (31) on its side wall. The bottom of the biochemical treatment tank (3) is provided with a stirring device (4). The bottom pipe of the biochemical treatment tank (3) is connected to a water pump (32).

2. The wastewater treatment device for environmental engineering construction according to claim 1, characterized in that: The lifting and filtering device (2) includes a selective filter plate (21) horizontally arranged in the sedimentation tank (1). The edge of the selective filter plate (21) is attached to the side wall of the sedimentation tank (1). A set of lifting mechanisms (22) is provided at each of the four corners of the bottom of the selective filter plate (21). A tilting mechanism (23) is also provided between the two sets of lifting mechanisms (22) arranged near the side of the biochemical treatment tank (3).

3. The wastewater treatment device for environmental engineering construction according to claim 2, characterized in that: The lifting mechanism (22) includes a connecting seat (221) fixed at the bottom corner of the selective filter plate (21). A lifting hydraulic rod (222) is provided below the sedimentation tank (1) perpendicular to the connecting seat (221). The connecting seat (221) and the top of the lifting hydraulic rod (222) are rotatably connected.

4. The wastewater treatment device for environmental engineering construction according to claim 3, characterized in that: The tilting mechanism (23) includes two sets of double connecting rods (231) arranged on both sides of the connecting seat (221). The upper end of the double connecting rod (231) is rotatably connected to the bottom of the connecting seat (221), and the lower end is rotatably connected to the top of the lifting hydraulic rod (222). A connecting rod limiting screw (232) is arranged laterally in the middle of the double connecting rod (231). A connecting rod drive motor (233) is arranged at the end of the connecting rod limiting screw (232). The output end of the connecting rod drive motor (233) can drive the limiting nut (234) arranged on the connecting rod limiting screw (232) to rotate, so that the double connecting rods (231) open and close relative to each other.

5. The wastewater treatment device for environmental engineering construction according to claim 1, characterized in that: The first agent dispensing device (11) includes a first agent storage tank (111) located below the ground. A sealed first dosing port (110) is provided above the first agent storage tank (111). A telescopic dosing nozzle (112) extending into the sedimentation tank (1) is provided on the side of the first agent storage tank (111).

6. The wastewater treatment device for environmental engineering construction according to claim 5, characterized in that: The telescopic dosing nozzle (112) includes a spray pipe (113) horizontally arranged in the sedimentation tank (1). The spray pipe (113) has several spray nozzles. A telescopic rack (114) is arranged above the spray pipe (113). A telescopic gear (115) that cooperates with the telescopic rack (114) and a motor that drives the rotation are arranged at the root of the spray pipe (113), so that the telescopic dosing nozzle (112) can be retracted into the first agent storage tank (111) until the end of the telescopic dosing nozzle (112) is flush with the side wall of the sedimentation tank (1).

7. The wastewater treatment device for environmental engineering construction according to claim 6, characterized in that: The stirring device (4) includes a stirring fan blade (41) rotatably connected to the bottom of the biochemical treatment tank (3), and a stirring motor for driving rotation is provided below the stirring fan blade (41), and a waterproof shell is provided outside the stirring motor.

8. The wastewater treatment device for environmental engineering construction according to claim 7, characterized in that: The second agent dispensing device (31) includes a second agent storage tank (311) located below the ground, a second dosing port (312) is provided above the second agent storage tank (311), and a second dosing nozzle (313) extending into the biochemical treatment pool (3) is provided on the side of the second agent storage tank (311).

9. A wastewater treatment device for environmental engineering construction according to claim 8, characterized in that: The bottom of the inclined pipe (13) located on the side wall of the biochemical treatment tank (3) is higher than the top of the pipe located on the side wall of the sedimentation tank (1).

10. A wastewater treatment device for environmental engineering construction according to claim 9, characterized in that: The water pump (32) can be detachably fixed above the ground.

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