Rural domestic sewage treatment system

Abstract

The utility model discloses a rural domestic sewage treatment system, which solves the problems of large occupied area, low load, high energy consumption, large investment, high operating cost and non-ideal treatment effect in the prior art, and comprises a septic tank, an anaerobic regulating tank and micro-power equipment, wherein an outlet of the septic tank is communicated with an inlet of the anaerobic regulating tank, supernate in the septic tank flows into the anaerobic regulating tank in a self-flowing manner, an outlet of the anaerobic regulating tank is communicated with an inlet of the micro-power equipment, and effluent of the anaerobic regulating tank flows into the micro-power equipment in a self-flowing manner; the micro-power equipment is of a concentric circle structure, a biological reaction area and an efficient settling area are arranged in the micro-power equipment, the biological reaction area is arranged on the outer ring of the efficient settling area, and a biological filler adding area is arranged below the biological reaction area. According to the utility model, the solar energy technology is applied to the micro-power equipment, and power is provided for the micro-nano aeration pipe of the system, so that the problem of the operation cost of the system is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a rural domestic sewage treatment system. Background Art

[0002] The wanton discharge of untreated rural domestic sewage can cause serious pollution of surface water runoff, pollute water quality, increase urban water supply risks and treatment costs, and cause difficulties in rural domestic water use. However, due to natural conditions, rural domestic sewage is scattered and difficult to collect, and it is difficult to lay sewage collection pipes on a large scale, so rural domestic sewage cannot be included in large-scale centralized sewage treatment plants for centralized treatment. It can only find more suitable sewage treatment processes and methods with high efficiency and low consumption according to local conditions.

[0003] In recent years, with the promulgation of the "Water Pollution Prevention and Control Action Plan" or the "Water Ten Articles", the treatment of rural domestic sewage has received more and more attention. At present, the technologies used in rural domestic sewage treatment projects in my country mainly include the combination of underground sewage treatment biological denitrification process (A / O process, Anoxic / Oxic) and artificial wetlands, the combination of underground sewage treatment biological denitrification process and ecological ponds, the combination of underground sewage treatment biological denitrification and phosphorus removal process (A2 / O process, Anaerobic-Anoxic-Oxic) and artificial wetlands, the combination of biological trickling filtration and artificial wetlands, and the integrated membrane bioreactor technology (MBR process, Membrane Bio-Reactor), etc. However, there are problems such as large land occupation, low load, high energy consumption, large investment, high operating costs, and unsatisfactory treatment effect. Utility Model Content

[0004] The utility model provides a rural domestic sewage treatment system to solve the technical problems of existing technology such as large occupation area, low load, high energy consumption, large investment, high operating cost and unsatisfactory treatment effect.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The present application provides a rural domestic sewage treatment system, comprising a septic tank, an anaerobic regulating tank and a micro-power device; wherein the outlet of the septic tank is connected to the inlet of the anaerobic regulating tank, the supernatant in the septic tank flows into the anaerobic regulating tank by gravity, the outlet of the anaerobic regulating tank is connected to the inlet of the micro-power device, and the effluent of the anaerobic regulating tank flows into the micro-power device by gravity;

[0007] The micro-power device is a concentric circle structure, and a biological reaction zone and a high-efficiency sedimentation zone are arranged in the micro-power device. The biological reaction zone is arranged in the outer circle of the high-efficiency sedimentation zone. A biological filler addition zone is arranged below the biological reaction zone, and biological fillers are added into the pool. The water discharged from the biological reaction zone is sent to the high-efficiency sedimentation zone, thereby enhancing the impact resistance of the high-efficiency sedimentation zone to the incoming water per unit hour and ensuring the water quality of the discharged water.

[0008] Furthermore, the septic tank, anaerobic regulating tank and micro-power equipment are all buried underground for sewage treatment.

[0009] Furthermore, a micro-nano aeration tube is provided at the bottom of the micro-power device extending outward from the top of the device. The micro-nano aeration tube is externally connected to a fan with a voltage of 220V, and is used in conjunction with solar power generation as the main source of electricity.

[0010] Furthermore, a water outlet is provided above the high-efficiency sedimentation area to discharge the further purified clean water; a sludge discharge pipe is also provided inside the micro-power equipment, and the sludge discharge pipe is connected to an air pipe away from the outlet end, and the air pipe is connected to the fan, and the sludge is discharged regularly by air lift.

[0011] Beneficial effects achieved by the utility model:

[0012] (1) The rural domestic sewage treatment system provided by the utility model adopts an underground system equipment to eliminate organic pollution by anaerobic digestion while overcoming the significant impact of temperature changes on the anaerobic digestion effect. The micro-power equipment utilizes the biodegradation of aerobic microorganisms and the filtering and interception effects of fillers to remove organic and nitrogen and phosphorus pollutants. In order to solve the energy consumption problem caused by aeration, solar energy technology is applied to the system to provide power for the aeration equipment of the system, thereby solving the cost problem of system operation.

[0013] (2) The rural domestic sewage treatment system provided by the utility model is equipped with micro-nano aeration tubes, which can effectively improve the oxygen utilization rate and save energy consumption. It also adopts the form of air lift, sludge return, and delayed oxygen consumption. It has a built-in fixed biological bed to increase the number of microorganisms, reduce microbial loss, and improve the biological treatment capacity. The equipment sedimentation module is enlarged to adapt to the instantaneous water volume changes of rural domestic sewage and enhance the ability to resist instantaneous water volume impact. At the same time, the fluid horizontal flow reaction of the traditional equipment is changed to a vertical flow reaction, which can effectively avoid the occurrence of dead water areas and increase the equipment treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the micro-power device of the utility model.

[0016] Reference numerals:

[0017] 1. Septic tank; 2. Anaerobic adjustment tank; 3. Micro-power equipment; 31. Biological reaction area; 32. High-efficiency sedimentation area; 33. Biological filler addition area; 34. Micro-nano aeration pipe; 35. Water outlet; 36. Sludge discharge pipe; 37. Air pipe.

[0018] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The same or similar numbers correspond to the same or similar parts. The terms describing the positional relationship in the drawings are only used for illustrative purposes and should not be construed as limitations on this patent. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0020] The technical solution of the present utility model is described in detail below in conjunction with the specific drawings.

[0021] like Figure 1-Figure 2 As shown, a rural domestic sewage treatment system includes a septic tank 1, an anaerobic regulating tank 2, and a micro-power device 3; the domestic sewage is collected by a pipe network and then goes to the septic tank, where solid impurities and suspended matter in the incoming water are intercepted, the outlet of the septic tank 1 is connected to the inlet of the anaerobic regulating tank 2, and the supernatant in the septic tank 1 flows into the anaerobic regulating tank 2 by gravity, where the water quality and quantity of the anaerobic regulating tank 2 are adjusted, and at the same time, SS in the water is further intercepted.

[0022] The outlet of the anaerobic regulating tank 2 is connected with the inlet of the micro-power device 3, and the effluent of the anaerobic regulating tank 2 flows into the micro-power device 3 by gravity. The micro-power device 3 is a concentric circle structure. A biological reaction zone 31 and a high-efficiency sedimentation zone 32 are arranged in the micro-power device 3. The biological reaction zone 31 is arranged in the outer circle of the high-efficiency sedimentation zone 32 to remove pollutants such as ammonia nitrogen, SS, COD, and total phosphorus. A biological filler addition zone 33 is arranged below the biological reaction zone 31. Biological fillers are added into the tank to enhance the attachment ability of microorganisms and reduce the amount of sludge added. The effluent of the biological reaction zone 31 flows to the high-efficiency sedimentation zone 32 to enhance the impact resistance of the high-efficiency sedimentation zone 32 to the incoming water per unit hour, thereby ensuring the effluent water quality.

[0023] The septic tank 1, anaerobic regulating tank 2, and micro-power equipment 3 are all buried for sewage treatment. A micro-nano aeration tube 34 is provided at the bottom of the micro-power equipment 3 extending outward from the top of the equipment. The micro-nano aeration tube 34 is connected to an external fan, and the fan has a voltage of 220V, which can be used in conjunction with solar power generation as the main source of electricity. Solar energy can meet the electricity consumption of 12 hours a day and the backup power for 3 days, solving the problem of electricity shortage on rainy days. At the same time, it can be connected to the mains to power the fan to ensure the use time of the fan. The micro-nano aeration tube 34 can effectively improve the oxygen utilization rate and save energy consumption; the built-in fixed biological bed can increase the number of microorganisms, reduce the loss of microorganisms, and improve the biological treatment capacity; the equipment sedimentation module is enlarged to adapt to the instantaneous water volume changes of rural domestic sewage and enhance the ability to resist instantaneous water volume impact; at the same time, the fluid horizontal flow plug flow reaction of the traditional equipment is changed to a vertical plug flow reaction, which can effectively avoid the appearance of dead water areas and increase the equipment treatment efficiency.

[0024] A water outlet 35 is provided above the high-efficiency sedimentation area 32 to discharge the further purified clean water; a sludge discharge pipe 36 is also provided inside the micro-power device 3, and the sludge discharge pipe 36 is connected to an air pipe 37 away from the outlet end, and the air inlet of the air pipe 37 is connected to the fan outside the equipment, and the gas is sent into the air pipe 37, and the sludge is discharged regularly by air lift.

[0025] The following is a detailed description of the operation of the above rural domestic sewage treatment system:

[0026] After the anaerobic regulating tank 2 removes some organic matter and improves the biodegradability of the wastewater, the rural domestic sewage enters the micro-power device 3 through the uniform water distribution pipe. The micro-power device 3 is provided with a micro-nano aeration tube 34 extending from the bottom to the top of the device. The micro-nano aeration tube 34 is externally connected to a fan. Solar power generation is the main source of electricity. The solar panel converts solar energy into electrical energy. The battery stores excess electrical energy as a backup. The blower sends air into the micro-nano aeration tube 34. Solar power generation provides aeration power and aeration air source for the micro-nano aeration tube 34. Rural domestic sewage is in the micro-power device 3. On the one hand, due to the effect of biological fillers, the micro-power device 3 has a large amount of microorganisms. In the aerated environment, aerobic microorganisms remove most of the pollutants in the rural domestic sewage through aerobic biodegradation and biological assimilation processes; on the other hand, due to the physical interception and chemical adsorption of the fillers, the rural domestic sewage will be further purified.

[0027] The serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A rural domestic sewage treatment system, characterized in that: The invention comprises a septic tank (1), an anaerobic regulating tank (2) and a micro-power device (3); wherein the outlet of the septic tank (1) is connected to the inlet of the anaerobic regulating tank (2), the supernatant in the septic tank (1) flows by gravity into the anaerobic regulating tank (2), the outlet of the anaerobic regulating tank (2) is connected to the inlet of the micro-power device (3), and the effluent of the anaerobic regulating tank (2) flows by gravity into the micro-power device (3); The micro-power device (3) is a concentric circle structure. A biological reaction zone (31) and a high-efficiency sedimentation zone (32) are arranged in the micro-power device (3). The biological reaction zone (31) is arranged in the outer circle of the high-efficiency sedimentation zone (32). A biological filler addition zone (33) is arranged below the biological reaction zone (31). The biological filler is added into the pool. The water discharged from the biological reaction zone (31) is discharged to the high-efficiency sedimentation zone (32), thereby enhancing the impact resistance of the high-efficiency sedimentation zone (32) to the incoming water per unit hour, thereby ensuring the water quality of the discharged water.

2. A rural domestic sewage treatment system according to claim 1, characterized in that: The septic tank (1), the anaerobic regulating tank (2) and the micro-power equipment (3) are all buried underground for sewage treatment.

3. A rural domestic sewage treatment system according to claim 1, characterized in that: A micro-nano aeration tube (34) is provided at the bottom of the micro-power device (3) and extends outward from the top of the device. The micro-nano aeration tube (34) is externally connected to a fan, and the fan has a voltage of 220V and is used in conjunction with solar power generation as a main power source.

4. A rural domestic sewage treatment system according to claim 1, characterized in that: A water outlet (35) is provided above the high-efficiency sedimentation zone (32) to discharge the further purified clean water; a sludge discharge pipe (36) is also provided inside the micro-power device (3), and an air pipe (37) is connected to the sludge discharge pipe (36) away from the outlet end, and the air pipe (37) is connected to a fan, and the sludge is discharged regularly by air lifting.

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