Single-household rural domestic sewage treatment equipment

Abstract

The utility model discloses single-household rural domestic sewage treatment equipment which comprises an aeration tank, a three-stage filter tank and a water collecting tank which are connected in sequence, the aeration tank is connected with the three-stage filter tank through a first overflow pipe, the three-stage filter tank is connected with the water collecting tank through a second overflow pipe, and the water collecting tank is connected with the aeration tank through a third overflow pipe. Compared with the prior art, the kitchen grey water and toilet black water treatment device has the advantages that kitchen grey water and toilet black water can be treated in a distinguished mode, the kitchen grey water firstly passes through the oil separation and residue blocking device, grease and solid residues are removed through the residue blocking basket and the oil separation film, and influences of the grease and the solid residues on the follow-up treatment process are avoided; and the toilet black water directly enters the aeration tank, and the aeration technology is utilized to promote the activity of microorganisms, so that efficient degradation of organic matters is realized. The distinguishing treatment strategy not only improves the treatment efficiency, but also remarkably reduces the risk of equipment blockage. Meanwhile, the equipment further integrates a multi-stage filtering system which comprises a gravel layer, a ceramsite layer, a volcanic rock layer and the like, so that the effluent quality is further improved.

Description

Technical Field

[0001] This utility model relates to the field of sewage treatment technology, and in particular to a single-household rural domestic sewage treatment equipment. Background Technology

[0002] The current rural wastewater treatment system faces a serious challenge: although most individual household wastewater treatment facilities are in use, primarily focusing on treating black water from toilets and effectively mitigating its environmental impact through facilities such as septic tanks, grey water from kitchens is often discharged directly without proper treatment. This practice ignores the large amounts of grease, food scraps, and other pollutants that are difficult to degrade naturally contained in grey water. These pollutants not only severely pollute surface and groundwater but also significantly weaken the overall effectiveness of rural wastewater treatment.

[0003] Although a small, assembled domestic sewage treatment device, as shown in Chinese utility model patent application number 202321015182.0, exists on the market, this device cleverly divides the area into a water distribution zone, a purification zone, and a stabilization zone using baffles and partitions, and includes an inlet in the water distribution zone, employing a purification method combining planting layers and filter layers, seemingly providing a comprehensive solution, a deeper analysis of its design principles and application scenarios reveals that this device does not differentiate between toilet black water and kitchen grey water—two wastewaters with drastically different properties. In fact, kitchen grey water, rich in grease, solid waste, and other components, is far more complex and difficult to treat than toilet black water. Directly mixing them not only affects purification efficiency but may also cause equipment blockage and reduce its lifespan.

[0004] In view of the above-mentioned situation and shortcomings, this utility model proposes a single-household rural domestic sewage treatment equipment to solve the above problems. Utility Model Content

[0005] In view of the above situation and to overcome the shortcomings of the existing technology, this utility model provides a single-household rural domestic sewage treatment equipment to solve the above problems.

[0006] To achieve the above objectives, this utility model provides a single-household rural domestic sewage treatment equipment, comprising an aeration tank, a three-stage filter tank, and a collection tank connected in sequence. The aeration tank and the three-stage filter tank are connected by a first overflow pipe, and the three-stage filter tank and the collection tank are connected by a second overflow pipe. The upper side of the aeration tank is connected to a black water inlet pipe for discharging toilet black water into the aeration tank and a gray water inlet pipe for discharging kitchen grey water into the aeration tank. An oil-water separator and sludge-blocking device is provided between the outlet of the grey water inlet pipe and the aeration tank.

[0007] The oil-water separator and sludge-blocking device includes an outer shell fixed to the upper end of the aeration tank, a sludge-blocking basket disposed inside the upper end of the outer shell, an oil-water separator disposed at an incline below the sludge-blocking basket for filtering oil film, and an oil collecting device disposed at the lower end of the oil-water separator for collecting oil film. The lower end of the outer shell is connected to a drain pipe, which discharges the wastewater after oil-water separator and sludge-blocking into the aeration tank.

[0008] Compared with existing technologies, this invention offers the following advantages: It can differentiate between kitchen greywater and toilet blackwater. Kitchen greywater first passes through an oil-water separator, where grease and solid residue are removed via a grease trap and membrane, preventing these substances from affecting subsequent treatment processes. Toilet blackwater, on the other hand, directly enters the aeration tank, where aeration technology promotes microbial activity and achieves efficient degradation of organic matter. This differentiated treatment strategy not only improves treatment efficiency but also significantly reduces the risk of equipment clogging. Furthermore, the equipment integrates a multi-stage filtration system, including layers of crushed stone, expanded clay, and volcanic rock, further enhancing the quality of the effluent. Attached Figure Description

[0009] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 This is a partially enlarged structural schematic diagram of the present invention.

[0012] Figure 3 This is a top view of the structure of this utility model. Detailed Implementation

[0013] The following is in conjunction with the appendix Figure 1-3 The specific embodiments of this utility model will be described in further detail.

[0014] like Figure 1-3As shown, this utility model discloses a single-household rural domestic sewage treatment equipment, which consists of three 600mm*600mm pools joined together, surrounded by a fence, occupying an area of ​​2200mm*1000mm. The empty area inside the fence is sown with grass seeds or paved with pebbles. The three pools include an aeration tank 1, a three-stage filter 2, and a collection tank 3 connected in sequence. The aeration tank 1 and the three-stage filter 2 are connected by a first overflow pipe 4, and the three-stage filter 2 and the collection tank 3 are connected by a second overflow pipe 5. The upper side of the aeration tank 1 is connected to a black water inlet pipe 6 for discharging black water from the toilet into the aeration tank 1 and a gray water inlet pipe 7 for discharging gray water from the kitchen into the aeration tank 1. The effluent from the gray water inlet pipe 7... An oil-water separator and sludge-blocking device 8 is installed between the inlet and the aeration tank 1. During use, the black water from the toilet enters the aeration tank 1 directly through the black water inlet pipe 6 for aeration treatment, while the kitchen ash water enters the oil-water separator and sludge-blocking device 8 through the ash water inlet pipe 7. After entering the oil-water separator and sludge-blocking device 8, the solid residues and grease in the ash water are filtered out. The ash water with the solid residues and grease filtered out enters the aeration tank 1 for sedimentation. As the amount of wastewater in the aeration tank 1 increases, the wastewater will enter the tertiary filter tank 2 through the first overflow pipe 4 for multi-stage filtration. The wastewater after multi-stage filtration gradually increases in the tertiary filter tank 2, and then overflows into the collection tank 3 through the second overflow pipe 5 for collection. The collected water can be used for watering vegetable gardens, etc.

[0015] In some embodiments, the second overflow pipe 5 includes a perforated section 501 and an overflow section 502. The perforated section 501 is laid at the bottom of the three-stage filter tank 2. The wastewater that has undergone multi-stage filtration enters the overflow section 502 through the perforated section 501 at the bottom of the three-stage filter tank 2, and then enters the water collection tank 3 through the overflow section 502.

[0016] The following is a specific embodiment of the oil-water separator and slag-blocking device 8:

[0017] The oil-water separator and sludge-blocking device 8 includes an outer shell 81 fixed to the upper end of the aeration tank 1, a sludge-blocking basket 82 set inside the upper end of the outer shell 81, an oil-water separator 83 inclined below the sludge-blocking basket 82 for filtering oil film, and an oil-collecting device 84 set at the lower end of the oil-water separator 83 for collecting oil film. The lower end of the outer shell 81 is connected to a drain pipe 85, which discharges the wastewater after oil-water separator and sludge-blocking into the aeration tank 1. The ash water inlet pipe 7 discharges kitchen ash water into the sludge-blocking basket 82. The sludge-blocking basket 82 intercepts the fixed residue, and the ash water that has filtered out the fixed residue falls on the surface of the oil-water separator 83. The grease will flow down along the oil-water separator 83 and enter the oil-collecting device 84 for collection. The water will fall directly through the oil-water separator 83 to the lower end of the inner end of the outer shell 81 and be discharged into the aeration tank 1 through the drain pipe 85.

[0018] To facilitate routine maintenance of the oil-water separator and slag-blocking device 8, a well cover 9 is provided at the upper end of the aeration tank 1. After the well cover 9 is opened, the solid residue in the slag-blocking basket 82 and the grease in the oil collection device 84 can be cleaned.

[0019] Aerator 10 is installed in aeration tank 1. The aerator 10 delivers oxygen to the wastewater, providing dissolved oxygen necessary for the life activities of microorganisms in the wastewater. Under aerobic conditions, microorganisms can effectively decompose organic matter in the wastewater, complete the biotransformation of elements such as carbon, nitrogen, and phosphorus, and achieve the biochemical degradation of wastewater.

[0020] In some embodiments, a solar panel 11 is installed on the top of the aeration tank 1. The solar panel 11 is connected to a battery 12. The solar panel 11 and the battery 12 are used to convert solar energy into electrical energy and collect it. The battery 12 is electrically connected to the aerator 10 to supply power to the aerator 10.

[0021] The top of the three-stage filter tank 2 is provided with a planting sand layer 13, and the two sides of the three stages 2 are provided with a crushed stone layer 14, a ceramic granule layer 15 and a volcanic rock layer 16 from top to bottom, so as to achieve multi-stage filtration of wastewater.

[0022] A water outlet pipe 17 is installed on the top side of the water collection tank 3.

[0023] In some embodiments, a weighing sensor 85 is provided on the inner wall of the outer shell 81, the bottom of the slag basket 82 is supported by the weighing sensor 85, the oil collection device 84 is equipped with a liquid level sensor 86, and a display panel 87 is installed on the top of the aeration tank 1. The weighing sensor 85 is used to monitor the weight of the slag basket 82, and the liquid level sensor 86 is used to monitor the oil level in the oil collection device 84. Farmers can observe the monitoring data in real time through the display panel 87 and take timely action.

[0024] In summary, this utility model aims to provide a single-household rural domestic sewage treatment equipment. By integrating oil-water separators and sludge traps with aeration and multi-stage filtration systems, it achieves comprehensive treatment of black water from toilets and grey water from kitchens, effectively removing pollutants such as grease and residue, improving the efficiency and effectiveness of rural sewage treatment, and promoting the improvement of the rural ecological environment.

[0025] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A single-household rural domestic sewage treatment equipment, characterized in that, It includes an aeration tank, a three-stage filter tank and a water collection tank connected in sequence. The aeration tank and the three-stage filter tank are connected by a first overflow pipe, and the three-stage filter tank and the water collection tank are connected by a second overflow pipe. The upper side of the aeration tank is connected to a black water inlet pipe for discharging black water from the toilet into the aeration tank and a gray water inlet pipe for discharging gray water from the kitchen into the aeration tank. An oil-water separator and sludge-blocking device is provided between the outlet of the gray water inlet pipe and the aeration tank. The oil-water separator and sludge-blocking device includes an outer shell fixed to the upper end of the aeration tank, a sludge-blocking basket disposed inside the upper end of the outer shell, an oil-water separator disposed at an incline below the sludge-blocking basket for filtering oil film, and an oil collecting device disposed at the lower end of the oil-water separator for collecting oil film. The lower end of the outer shell is connected to a drain pipe, which discharges the wastewater after oil-water separator and sludge-blocking into the aeration tank.

2. The single-household rural domestic sewage treatment equipment according to claim 1, characterized in that, The aeration tank is equipped with a manhole cover at its upper end.

3. The single-household rural domestic sewage treatment equipment according to claim 1, characterized in that, An aerator is installed in the aeration tank.

4. A single-household rural domestic sewage treatment equipment according to claim 3, characterized in that, A solar panel is installed on the top of the aeration tank, and the solar panel is connected to a storage battery, which is electrically connected to the aerator.

5. A single-household rural domestic sewage treatment equipment according to claim 1, characterized in that, The top of the three-stage filter is provided with a planting sand layer, and the two sides of the three stages are provided with a crushed stone layer, a ceramsite layer and a volcanic rock layer from top to bottom.

6. A single-household rural domestic sewage treatment equipment according to claim 1, characterized in that, A water outlet pipe is installed on the top side of the water collection tank.

7. A single-household rural domestic sewage treatment equipment according to claim 4, characterized in that, The inner wall of the outer shell is equipped with a weighing sensor, the bottom of the slag-blocking basket is supported by the weighing sensor, and the oil collection device is equipped with a liquid level sensor.

8. A single-household rural domestic sewage treatment equipment according to claim 7, characterized in that, A display panel is installed on the top of the aeration tank.

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