Buried domestic sewage treatment equipment

Abstract

The utility model provides buried domestic sewage treatment equipment, which relates to the technical field of sewage treatment, and comprises a grating tank, a septic tank, an adjusting tank and a disinfecting water tank which are arranged at the top of the ground and are communicated with each other, and an underground treatment device is arranged between the adjusting tank and the disinfecting water tank and is positioned at the bottom of the ground in a communicated manner; a hydrolysis acidification pool is arranged on the side, close to the interior of the adjusting pool, of the underground treatment device in a penetrating mode, an MBR membrane filtering box is arranged on the other side of the interior of the underground treatment device, a reflux pump is arranged between the MBR membrane filtering box and the adjusting pool in a penetrating mode, and a contact oxidation pool is arranged between the hydrolysis acidification pool and the MBR membrane filtering box in a penetrating mode; stirring assemblies are rotationally arranged in the hydrolysis acidification tank and the contact oxidation tank. The device can be buried under the ground surface, the ground surface above the device can be used as greening or other land, house building, heating and heat preservation are not needed, full-automatic control is achieved, personnel management is not needed, sludge backflow is avoided, operation is easy, and maintenance is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to an underground domestic sewage treatment device. Background Art

[0002] Sewage generated in the process of human life is one of the main sources of water pollution. Domestic sewage is mainly the discharge water generated by various kitchen water, washing water and toilet water used in human life, mostly non-toxic inorganic salts. Domestic sewage contains a large amount of organic matter, such as cellulose, starch, sugar, fat protein, etc.; it also often contains pathogens, viruses and parasite eggs. Under the action of anaerobic bacteria, it is easy to produce odorous substances. If it is not treated, it will cause great harm to the environment.

[0003] Therefore, before domestic sewage is discharged, it will be treated to the discharge standard using a sewage treatment system. The sewage treatment system will first filter out large pieces of garbage in the domestic sewage through a screen, then use a septic tank to filter and precipitate the sewage, and then use sewage treatment equipment to filter out organic matter and inorganic salts in the sewage, and finally use a disinfection tank to disinfect the wastewater before completing the discharge.

[0004] However, current sewage treatment equipment is mostly exposed outdoors, requiring the construction of buildings to insulate the external environment of the reaction pool, and requiring a large amount of manual management of the operation of sewage under different processes, which cannot meet the needs of domestic sewage treatment. Therefore, the utility model proposes an underground sewage treatment equipment to solve the problem. Utility Model Content

[0005] The utility model provides an underground domestic sewage treatment device to solve the problems raised by the above-mentioned background technology.

[0006] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0007] An embodiment of the utility model provides an underground domestic sewage treatment equipment, comprising a grille pool, a septic tank, a regulating tank and a disinfection water tank which are arranged on the top of the ground and are connected through each other, an underground treatment device is arranged through each other between the regulating tank and the disinfection water tank and located at the bottom of the ground, a hydrolysis acidification tank is arranged through each other on one side of the underground treatment device close to the regulating tank, an MBR membrane filter box is arranged on the other side of the underground treatment device, a reflux pump is arranged through each other between the MBR membrane filter box and the regulating tank, a contact oxidation tank is arranged through each other between the hydrolysis acidification tank and the MBR membrane filter box, stirring components are rotatably arranged in both the hydrolysis acidification tank and the contact oxidation tank, a connecting pipe is arranged between the underground treatment device and the disinfection water tank, an output seat is arranged at the end of the connecting pipe, and an automatic controller is arranged in the middle of the connecting pipe.

[0008] Preferably, an overflow prevention pipe, a drain pipe and a water inlet pipe connected to the regulating tank are respectively provided on one side of the underground treatment device close to the regulating tank, and the overflow prevention pipe is located on the upper side of the water inlet pipe and the drain pipe.

[0009] Preferably, a same return pipe is provided between the regulating tank, the reflux pump and the MBR membrane filter box.

[0010] Preferably, a sludge pipe is provided at the bottom of the MBR membrane filter box, and a valve body is provided at the tail end of the sludge pipe.

[0011] Preferably, an input seat is provided between the contact oxidation tank and the MBR membrane filter box.

[0012] Preferably, flow rate sensors are provided in the input seat and the output seat, and the input seat and the output seat are both connected to an automatic controller.

[0013] Preferably, the number of the stirring components is multiple groups of stirring components, and the multiple groups of stirring components are longitudinally distributed in the hydrolysis acidification tank and the contact oxidation tank.

[0014] Preferably, the stirring assembly includes a rotating shaft, spiral blades fixedly connected to both ends of the rotating shaft, and fan blades fixedly connected to the middle of the rotating shaft.

[0015] The above solution of the utility model includes at least the following beneficial effects:

[0016] 1. The utility model can be buried under the ground, and the ground above the equipment can be used for greening or other purposes. There is no need to build a house, provide heating and insulation. It is fully automatic, does not require personnel management, has no sludge backflow, is easy to operate and maintain. The entire equipment processing system is equipped with a fully automatic electrical control system, which is safe and reliable in operation. Usually, it does not require special personnel management, but only timely maintenance and upkeep of the equipment. It has low noise, no odor and long service life.

[0017] 2. The sewage treatment equipment of the utility model is a modular and efficient sewage biological treatment equipment, which is a sewage biological treatment system with biofilm as the main purification body. It gives full play to the characteristics of anaerobic biological filter, contact oxidation bed and other biofilm reactors, such as high biological density, strong pollution resistance, low power consumption, stable operation and convenient maintenance, so that the system has a wide application prospect and promotion value;

[0018] 3. The utility model uses a stirring assembly in a hydrolysis acidification tank and a contact oxidation tank, so that the kinetic energy of water flowing in and out of the hydrolysis acidification tank and the contact oxidation tank can be used to drive the blades on the stirring assembly to rotate, thereby achieving stirring inside the hydrolysis acidification tank and the contact oxidation tank, accelerating the reaction rate of organic matter and harmful substances in sewage, and improving the sewage treatment effect;

[0019] 4. The utility model arranges flow rate sensors at the input and output ends of the MBR membrane filter box, so that the input flow rate data and the output flow rate data of the sewage in the MBR membrane filter box can be analyzed and controlled respectively. When the difference between the maximum value of the input sewage flow rate and the maximum value of the output flow rate is large, it is convenient to remind the ground staff to clean the inside of the MBR membrane filter box, or through the control of the automatic controller, the sludge pipe can be automatically controlled to clean and discharge the sludge inside the MBR membrane filter box, which is convenient for the replacement and maintenance of the MBR membrane and improves the treatment effect of the sewage treatment equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional view of the structure of the utility model;

[0021] Figure 2 It is a cross-sectional view of the internal structure of the underground treatment device in the utility model;

[0022] Figure 3 It is a structural stereoscopic view of the underground treatment device in the utility model;

[0023] Figure 4 This is a structural stereoscopic view of the stirring assembly in the utility model;

[0024] Figure 5 It is a structural stereoscopic view of the input seat, output seat, reflux pump and automatic controller in the utility model;

[0025] Figure 6 The utility model is a flowchart of sewage treatment by underground domestic sewage treatment equipment.

[0026] Description of reference numerals:

[0027] 1. Screen tank; 2. Septic tank; 3. Regulating tank; 4. Hydrolysis acidification tank; 5. Contact oxidation tank; 6. MBR membrane filter box; 7. Input seat; 8. Output seat; 9. Connecting pipe; 10. Automatic controller; 11. Disinfection pool; 12. Overflow prevention pipe; 13. Water inlet pipe; 14. Drain pipe; 15. Return pipe; 16. Sludge pipe; 17. Rotating shaft; 18. Spiral blade; 19. Fan blade; 20. Flow rate sensor; 21. Underground treatment device; 22. Reflux pump; 23. Stirring assembly; 24. Discharge pipe. DETAILED DESCRIPTION

[0028] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0029] like Figures 1 to 5 As shown, an embodiment of the utility model provides an underground domestic sewage treatment equipment, including a grille pool 1, a septic tank 2, a regulating tank 3 and a disinfection water tank 11 which are arranged on the top of the ground and are connected through each other, an underground treatment device 21 is arranged through each other between the regulating tank 3 and the disinfection water tank 11 and located at the bottom of the ground, a hydrolysis acidification tank 4 is arranged through each other on one side of the underground treatment device 21 close to the regulating tank 3, an MBR membrane filter box 6 is arranged on the other side of the underground treatment device 21, a reflux pump 22 is arranged through each other between the MBR membrane filter box 6 and the regulating tank 3, a contact oxidation tank 5 is arranged through each other between the hydrolysis acidification tank 4 and the MBR membrane filter box 6, a stirring assembly 23 is rotatably arranged in both the hydrolysis acidification tank 4 and the contact oxidation tank 5, a connecting pipe 9 is arranged between the underground treatment device 21 and the disinfection water tank 11, an output seat 8 is arranged at the end of the connecting pipe 9, and an automatic controller 10 is arranged in the middle of the connecting pipe 9.

[0030] Among them, the grid pool 1, the septic tank 2, the regulating tank 3 and the disinfection water tank 11 are all existing structures in the sewage treatment system. The grid pool 1 is used to filter large pieces of matter in the sewage, the septic tank 2 is used to precipitate the sewage, and the regulating tank 3 is used to filter oil pollution in the sewage. Since the organic matter concentration in the sewage is very high, the microorganisms are in anoxic state. At this time, the microorganisms are facultative microorganisms. The regulating tank 3 not only has a certain organic matter removal function, but also can reduce the organic load of the subsequent aerobic tank and reduce the organic matter concentration; but there is still a certain amount of organic matter and relatively high NH3-N; in order to further oxidize and decompose the organic matter, and at the same time, under the carbonization, the nitrification can proceed smoothly, an aerobic biological contact oxidation tank 5 with a low organic load is set in the underground treatment device 21. The underground treatment device 21 mainly contains aerobic microorganisms and self-aerobic bacteria (nitrifying bacteria). Aerobic microorganisms and self-aerobic bacteria (nitrifying bacteria) use the inorganic carbon produced by the decomposition of organic matter or CO in the air 2 and H 2 O is used as a nutrient source to convert ammonia nitrogen in sewage into nitrate nitrogen and nitrite nitrogen. The effluent of the underground treatment device 21 is partially returned to the regulating tank 3 to provide an electron acceptor for the regulating tank 3. Nitrogen pollution is finally eliminated through denitrification, sewage treatment pollution is reduced, and the effect of sewage treatment is improved. By using the stirring component 23 between the hydrolysis acidification tank 4 and the contact oxidation tank 5, the sewage can be treated by passing the sewage into the hydrolysis acidification tank 4 and the contact oxidation tank 5, and the decomposition rate and treatment adequacy of organic matter in the sewage are increased. The automatic controller 10 on the connecting pipe 9 is arranged to facilitate the comparison of the input flow rate and the output flow rate on both sides of the MBR membrane filter box 6, so as to realize the rapid detection of the flow state in the MBR membrane filter box 6, thereby facilitating the cleaning work inside the MBR membrane filter box 6.

[0031] As the preferred technical solution of this embodiment, an anti-overflow pipe 12, an emptying pipe 14 and an inlet pipe 13 connected to the regulating tank 3 are respectively provided on one side of the underground treatment device 21 close to the regulating tank 3, and the anti-overflow pipe 12 is located on the upper side of the inlet pipe 13 and the emptying pipe 14, and one end of the anti-overflow pipe 12, the inlet pipe 13 and the emptying pipe 14 are all connected to the hydrolysis acidification tank 4. The internal sewage capacity of the underground treatment device 21 can be limited by the anti-overflow pipe 12, and the other end thereof passes through the upper side of the ground, and the sewage in the underground treatment device 21 is uniformly discharged through the emptying pipe 14.

[0032] Furthermore, a discharge pipe 24 extending to the upper side of the ground is provided on the top of the underground treatment device 21. Through the provision of the discharge pipe 24, CO generated by the sewage reaction in the underground treatment device 21 can be discharged. 2 and H 2 The discharge of O.

[0033] Furthermore, a same return pipe 15 is provided between the regulating tank 3, the reflux pump 22 and the MBR membrane filter box 6. The use of the return pipe 15 facilitates the through-connection between the regulating tank 3, the reflux pump 22 and the MBR membrane filter box 6. By applying the existing liquid conveying technology of the pump body, the power drive of the reflux pump 22 can transfer part of the sewage in the MBR membrane filter box 6 to the regulating tank 3, so as to realize the reflux treatment of part of the sewage. The reflux pump 22 is connected to the automatic controller 10. By applying the existing liquid flow rate detection technology, the sewage flow rate passing through the input seat 7 can be detected to obtain the input sewage flow rate of the MBR membrane filter box 6. The output seat 8 can detect the rate of the sewage passing through to obtain the output sewage flow rate. By connecting the input seat 7 and the output seat 8 with the automatic controller 10, the automatic controller 10 can compare the maximum and minimum values ​​of the flow rate to obtain the impurity content of the MBR membrane filter box 6, which is convenient for cleaning by external staff.

[0034] At the same time, by applying the existing electrical control technology of the pump body, the automatic controller 10 can automatically control the on-off state of the return pump 22, realizing unmanned control of the underground domestic sewage treatment equipment, and the staff on the ground can also control the use status of the return pump 22.

[0035] Furthermore, the number of stirring components 23 is multiple groups, and the multiple groups of stirring components 23 are longitudinally distributed in the hydrolysis acidification tank 4 and the contact oxidation tank 5. By setting the stirring components 23 inside the hydrolysis acidification tank 4 and the contact oxidation tank 5, the impact force of the water flow is used to drive the stirring components to rotate, so as to achieve the stirring of sewage and improve the reaction rate of sewage treatment. Specifically, the stirring component 23 includes a rotating shaft 17, spiral blades 18 fixedly connected to both ends of the rotating shaft 17, and a fan blade 19 fixedly connected to the middle of the rotating shaft 17. When in use, the rotating shaft 17 and the spiral blades 18 and the fan blades 19 thereon are driven to rotate by the effect of the water flow, so as to achieve the effect of stirring the sewage.

[0036] Furthermore, a sludge pipe 16 is provided at the bottom of the MBR membrane filter box 6, and a valve body is provided at the tail end of the sludge pipe 16 to discharge the sludge.

[0037] Furthermore, an input seat 7 is provided between the contact oxidation tank 5 and the MBR membrane filter box 6. The accumulated sludge in the MBR membrane filter box 6 can be discharged uniformly through the use of the sludge pipe 16. During use, when the difference between the detection data in the input seat 7 and the output seat 8 is large, the automatic controller 10 can control the valve body to open it, thereby realizing automatic cleaning of the MBR membrane filter box 6.

[0038] Furthermore, flow rate sensors 20 are provided in the input seat 7 and the output seat 8, and both the input seat 7 and the output seat 8 are connected to the automatic controller 10. By using the input seat 7 and combining with the flow rate sensor 20, the flow rate detection of the sewage input to the MBR membrane filter box 6 can be realized.

[0039] Reference Figure 6In the sewage treatment of the utility model embodiment, the sewage flows into the grid pool 1 by gravity, and after the floating objects and large impurities in the sewage are removed by the grid pool 1 and the septic tank 2, the sewage flows into the regulating pool 3 by gravity; the sewage treated by the hydrolysis acidification pool 4, the contact oxidation pool 5 and the MBR membrane filter box 6 is fully mixed and then pumped back to the regulating pool 3 by the reflux pump 22, so as to realize the circulation treatment of the sewage, and the MBR membrane filter box 6 is connected with the disinfection water pool 11 through the connecting pipe 9, and the water of the MBR membrane filter box 6 enters the disinfection water pool 11 through the output seat 8, and is discharged after being disinfected and meeting the standards; through the use of multiple stirring components 23 in the hydrolysis acidification pool 4 and the contact oxidation pool 5, it can utilize the kinetic energy of water to stir the hydrolysis acidification pool 4 and the contact oxidation pool 5 is stirred for treatment, so as to improve the treatment efficiency of sewage. When sewage is input or output, the flow rate data of sewage at the input and output ends of MBR membrane filter box 6 can be detected in real time through the setting of flow rate sensor 20 in input seat 7 and output seat 8. Then, through the connection between input seat 7 and output seat 8 and automatic controller 10, automatic controller 10 can automatically control sludge pipe 16 for sewage treatment, so as to realize the cleaning and maintenance of the inside of MBR membrane filter box 6. Through return pipe 15, regulating tank 3 and MBR membrane filter box 6 in underground treatment device 21 are connected through, so as to further oxidize and decompose organic matter and impurities in sewage, so as to realize unmanned control of the buried domestic sewage treatment equipment.

[0040] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An underground domestic sewage treatment equipment, characterized in that: The invention comprises a grille pool (1), a septic tank (2), a regulating pool (3) and a disinfection pool (11) which are arranged on the top of the ground and are connected through each other, and is characterized in that an underground treatment device (21) is arranged through each other between the regulating pool (3) and the disinfection pool (11) and at the bottom of the ground, a hydrolysis acidification pool (4) is arranged through each other on one side of the underground treatment device (21) close to the regulating pool (3), an MBR membrane filter box (6) is arranged on the other side of the underground treatment device (21), and the MBR membrane filter box A reflux pump (22) is provided between the regulating tank (6) and the regulating tank (3), a contact oxidation tank (5) is provided between the hydrolysis acidification tank (4) and the MBR membrane filter box (6), a stirring assembly (23) is rotatably provided in both the hydrolysis acidification tank (4) and the contact oxidation tank (5), a connecting pipe (9) is provided between the underground treatment device (21) and the disinfection water tank (11), an output seat (8) is provided at the end of the connecting pipe (9), and an automatic controller (10) is provided in the middle of the connecting pipe (9).

2. The underground domestic sewage treatment equipment according to claim 1, characterized in that: An anti-overflow pipe (12), a drain pipe (14), and a water inlet pipe (13) connected to the regulating tank (3) are respectively arranged on one side of the underground treatment device (21) close to the regulating tank (3), and the anti-overflow pipe (12) is located on the upper side of the water inlet pipe (13) and the drain pipe (14).

3. The underground domestic sewage treatment equipment according to claim 1, characterized in that: A common return pipe (15) is provided between the regulating tank (3), the return pump (22) and the MBR membrane filter box (6).

4. The underground domestic sewage treatment equipment according to claim 1, characterized in that: A sludge pipe (16) is provided at the bottom of the MBR membrane filter box (6), and a valve body is provided at the tail end of the sludge pipe (16).

5. The underground domestic sewage treatment equipment according to claim 1, characterized in that: An input seat (7) is provided between the contact oxidation tank (5) and the MBR membrane filter box (6).

6. The underground domestic sewage treatment equipment according to claim 5, characterized in that: The input seat (7) and the output seat (8) are both provided with flow rate sensors (20), and the input seat (7) and the output seat (8) are both connected to an automatic controller (10).

7. The underground domestic sewage treatment equipment according to claim 1, characterized in that: The number of the stirring components (23) is multiple groups, and the multiple groups of stirring components (23) are longitudinally distributed in the hydrolysis acidification tank (4) and the contact oxidation tank (5).

8. The underground domestic sewage treatment equipment according to claim 7, characterized in that: The stirring assembly (23) comprises a rotating shaft (17), spiral blades (18) fixedly connected to both ends of the rotating shaft (17), and fan blades (19) fixedly connected to the middle of the rotating shaft (17).

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