Ecological water purification system for resource utilization of rural sewage
The combined system of black water digester, regulating slag separator and biological-ecological combined water purification device solves the problems of high technical requirements and difficult construction in the treatment of domestic sewage in villages and towns. It achieves the effects of low power consumption, strong resistance to load shock, land saving and low operating cost, and is suitable for the treatment of domestic sewage in villages and towns.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUANGXI ZHONGGUAN ZHIHE ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2024-03-07
- Publication Date
- 2026-07-28
AI Technical Summary
Traditional village sewage treatment processes suffer from problems such as high technical requirements for operation, difficult construction, large land area, poor resistance to load shocks, low treatment efficiency, and easy clogging of packing materials. Furthermore, they cannot convert sewage into effective resources to be returned to the local villagers.
The system employs a combination of black water digestion tank, regulating sludge tank, and biological-ecological combined water purification device. Through bar filtration, fermentation treatment, multi-stage wetland purification, and plant absorption and degradation, it realizes the resource utilization of wastewater. The system has a modular design and is suitable for the treatment of domestic wastewater in villages and towns.
It achieves low power consumption, strong resistance to load impact, land saving, low operating cost, good environmental landscape effect, and stable effluent quality, making it suitable for village and township domestic sewage treatment.
Smart Images
Figure CN122464583A_ABST
Abstract
Description
Technical Field
[0001] This invention provides an ecological water purification system for the resource utilization of domestic sewage in villages and towns, belonging to the field of sewage treatment technology. Background Technology
[0002] The resource utilization of domestic sewage in villages and towns is a sustainable development approach. By treating and utilizing domestic sewage, the impact of sewage on the environment can be greatly reduced, while also generating certain economic and energy benefits. Currently, the main technologies for treating domestic sewage in villages and towns include traditional biological methods, constructed wetlands, rapid infiltration processes, and improved oxidation ponds.
[0003] Based on the above, the inventors discovered that: However, traditional biological treatment methods consume a lot of electricity and are difficult to operate normally in villages and towns lacking management capabilities. Although constructed wetlands, rapid infiltration, and improved oxidation ponds have low operating costs and low technical requirements, they have disadvantages such as large footprint, poor resistance to load shocks, and low treatment efficiency. In addition, constructed wetlands and rapid infiltration processes also suffer from the problem of easy clogging of the packing material. Furthermore, these processes cannot convert wastewater into effective resources to be returned to the local villagers.
[0004] Therefore, in view of this, we study and improve the existing structure, and propose an ecological water purification system for the resource utilization of rural domestic sewage to solve the above-mentioned problems. Summary of the Invention
[0005] The technical problem that this invention aims to solve is that traditional operating techniques have high requirements, are difficult to construct, and are not suitable for treating domestic sewage in villages and towns.
[0006] To address the aforementioned problems, the present invention proposes the following technical solution: an ecological water purification system for the resource utilization of rural domestic sewage, comprising a black water digestion tank, a regulating and separating tank, and a biological-ecological combined water purification device, wherein the black water digestion tank, the regulating and separating tank, and the biological-ecological combined water purification device are connected in sequence; the black water digestion tank and the regulating and separating tank are located below ground level, and a black water inlet pipe and a supernatant water pipe are respectively connected to one side of the black water digestion tank and the regulating and separating tank; a check valve is respectively installed on the black water inlet pipe and the grey water inlet pipe; the black water digestion tank contains black water... The system includes an inlet coarse and fine screen and a fertilizer solution lift pump. A fertilizer solution intake pipe is fixedly connected to the fertilizer solution lift pump, with the other end extending to the ground. The regulating slag-separating tank is equipped with an inlet coarse and fine screen for grey water, a grey water lift pump, and a float level switch. The grey water lift pump is fixedly connected to a connecting pipe, which is equipped with a basket filter. The other end of the connecting pipe is placed on a biological-ecological combined water purification device. The biological-ecological combined water purification device has an outlet pipe at its bottom and includes a rock layer, a groundwater layer, a soil layer, and a vegetation layer. Black water enters the black water digestion tank through the black water inlet pipe and the coarse and fine screens. After the coarse and fine screens remove larger solids, the black water enters the digestion tank for digestion and fermentation. The resulting fertilizer solution can be taken by the fertilizer solution lift pump through the fertilizer solution take-up pipe for irrigation. Grey water enters the equalization and slag-separating tank through the grey water inlet pipe and the coarse and fine screens. After the coarse and fine screens remove larger solids, the grey water enters the equalization and slag-separating tank for sedimentation. The supernatant from the black water digestion tank enters the equalization and slag-separating tank through the supernatant water pipe, and is then lifted by the grey water lift pump in the equalization and slag-separating tank and filtered through a basket filter before entering the biological-ecological combined water purification device. Then, it is further purified by the absorption and degradation of various wetland and terrestrial plants in the biological-ecological combined water purification device and the filtration and adsorption of multi-stage packing. The effluent flows by gravity into the farmland irrigation ditch through the outlet pipe.
[0007] Preferably, the black water digestion tank and the regulating slag-separating tank are interconnected by a supernatant water pipe and the supernatant water pipe is equipped with a check valve.
[0008] Preferably, the lowermost part of the rock layer crust is composed of different types of rocks.
[0009] Preferably, the groundwater layer is located below the rock layer, mainly composed of groundwater, and exists between soil particles or in rock fissures.
[0010] Preferably, the soil layer is located above the groundwater layer and is mainly composed of minerals, organic matter, air and moisture, with tree roots and other organisms often present in this layer.
[0011] Preferably, the vegetation layer is located above the soil layer and consists of various plants.
[0012] Preferably, the basket filter includes a basket, an inlet / outlet, and a baffle plate.
[0013] Due to the adoption of the above technical solutions, the beneficial effects of the ecological water purification system for the resource utilization of rural domestic sewage of the present invention are as follows: the black water digestion tank, the regulating slag tank, and the biological-ecological combined water purification device can be modularly designed, and have the characteristics of few power consumption points, low energy consumption, strong resistance to load impact, land saving, sewage utilization, stable effluent quality, simple construction, short construction period, convenient maintenance and management, low operating cost, good environmental landscape effect, and no odor. It is suitable for the field of low-concentration organic sewage purification and treatment, and can be widely promoted, especially in the treatment of rural domestic sewage. Attached Figure Description
[0014] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1This is a schematic diagram of the structure of an ecological water purification system for the resource utilization of domestic sewage in rural areas, according to the present invention.
[0015] In the picture: 1. Blackwater digester; 2. Equalizing and slag-separating tank; 3. Biological-ecological combined water purification device; 4. Blackwater inlet pipe; 5. Blackwater inlet coarse and fine screens; 6. Fertilizer solution booster pump; 7. Fertilizer solution intake pipe; 8. Supernatant water pipe; 9. Grey water inlet pipe; 10. Grey water inlet coarse and fine screens; 11. Grey water booster pump; 12. Float level switch; 13. Basket filter; 14. Outlet pipe; 15. Check valve one; 16. Check valve two. Detailed Implementation
[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0017] The technical background of this application fully explains the problems of the prior art, and there are no overarching or general issues. The following description of the invention and specific embodiments will specifically describe the problems that this application needs to solve, clarify the technical problems that the technical solution needs to solve, and determine that the technical solution of this application has beneficial effects compared with the objective prior art.
[0018] Please see Figure 1 As shown: This invention provides an ecological water purification system for the resource utilization of rural domestic sewage: including a black water digestion tank 1, an equalization and slag-separating tank 2, and a biological-ecological combined water purification device 3, wherein the black water digestion tank 1, the equalization and slag-separating tank 2, and the biological-ecological combined water purification device 3 are connected in sequence.
[0019] The black water digester 1 and the regulating slag-separating tank 2 are located below ground level, and the black water digester 1 and the regulating slag-separating tank 2 are respectively connected to a black water inlet pipe 4 and a supernatant water pipe 8 on one side. A check valve 15 is installed on the black water inlet pipe 4 and the grey water inlet pipe 9 respectively.
[0020] The black water digester 1 and the regulating slag-separating tank 2 are interconnected by the supernatant water pipe 8, and the supernatant water pipe 8 is equipped with a check valve 2 16.
[0021] The blackwater digestion tank 1 is equipped with a blackwater inlet coarse and fine screen 5 and a fertilizer solution lift pump 6. A fertilizer solution intake pipe 7 is fixedly connected to the fertilizer solution lift pump 6, with the other end of the pipe extending to the ground. The regulating slag-separating tank 2 is equipped with a greywater inlet coarse and fine screen 10, a greywater lift pump 11, and a float level switch 12. When the liquid level rises, the float rises accordingly, transmitting the motion to the switch via a rod or chain. The switch is triggered when the float reaches a certain position, changing its state. Conversely, when the liquid level drops, the float also drops, changing the switch state again.
[0022] The grey water lift pump 11 is fixedly connected to a connecting pipe 17 and a basket filter 13 is provided on the connecting pipe 17. The other end of the connecting pipe 17 is placed on the biological-ecological combined water purification device 3. The basket filter 13 includes a basket, an inlet and outlet, and a guide plate.
[0023] The basket is typically a metal mesh or steel sieve basket with a large filtration area. Solid particles are trapped in the basket, while liquids can pass through. The inlet / outlet is equipped with inlet / outlet pipes; fluid enters the basket from the inlet, is filtered, and then flows out from the outlet. The guide plate, located above or below the basket, guides the fluid flow through the basket, enhancing the filtration effect.
[0024] The working principle of the basket filter 13 is as follows: when the polluted liquid passes through the basket filter, the solid particles are prevented from entering the downstream system and are left in the basket. The purified liquid will flow out through the outlet pipe. When the solid particles in the basket reach a certain level, the sewage discharge device can be opened to remove the solid particles and continue operation.
[0025] The biological-ecological combined water purification device 3 is provided with an outlet pipe 14 at the bottom. The biological-ecological combined water purification device 3 includes a rock layer, a groundwater layer, a soil layer, and a vegetation layer.
[0026] The rock layer is the lowest part of the Earth's crust and is composed of different types of rocks, such as granite and limestone. The groundwater layer is located below the rock layer and is mainly composed of groundwater, which exists between soil particles or in rock fissures. The soil layer is located above the groundwater layer and is mainly composed of minerals, organic matter, air, and moisture. Tree roots and other organisms often exist in this layer. The vegetation layer is located above the soil layer and is composed of various plants, including grass, shrubs, and trees.
[0027] The specific steps for using it are as follows: Black water and grey water are fed into the black water digestion tank and the regulating sludge tank through the black water inlet pipe and grey water inlet pipe, respectively. The blackwater digester uses a fertilizer solution lift pump and fertilizer solution intake pipe to lift the liquid to the ground for irrigation. The supernatant from the black water digester enters the inlet of the regulating slag-separating tank through the supernatant water pipe. The inlet of the regulating slag-separating tank then enters the biological-ecological combined water purification device through the ash water lift pump and connecting pipe. The biological-ecological combined water purification device then discharges the wastewater through the outlet pipe at the bottom.
[0028] The principle of the ecological water purification system for the resource utilization of rural domestic sewage of the present invention is as follows: Black water enters the black water digestion tank 1 through black water inlet pipe 4 and black water inlet coarse and fine screen 5. After the coarse and fine screen 5 removes larger solids, the black water enters the black water digestion tank 1 for digestion and fermentation. The resulting fertilizer solution can be taken by fertilizer solution lift pump 6 through fertilizer solution take-up pipe 7 for irrigation. Ash water enters the equalization and slag separation tank 2 through ash water inlet pipe 9 and ash water inlet coarse and fine screen 10. After the coarse and fine screen 10 removes larger solids, the ash water enters the equalization and slag separation tank 2 for sedimentation. The supernatant from the black water digestion tank 1 enters the equalization and slag separation tank 2 through supernatant water pipe 8 and is then separated by the equalization and slag separation tank. The ash water in the slag pool 2 is lifted by the ash water lift pump 11 and filtered through the basket filter 13 before entering the biological-ecological combined water purification device 3. Then, it is further purified by the absorption and degradation of various wetland and terrestrial plants in the biological-ecological combined water purification device 3 and the filtration and adsorption of multi-stage packing. The water outlet pipe 14 flows into the farmland irrigation ditch by gravity. The check valve 15 and check valve 2 16 on the black water inlet pipe 4, the ash water inlet pipe 9, and the supernatant water pipe 8 ensure that the liquid can only flow in one direction. The float level switch is an existing technology mainly used to determine the liquid level and drain water in time.
[0029] The ecological purification system of this invention has low technical requirements for operation, is easy to construct, and is suitable for the treatment of domestic sewage in villages and towns.
[0030] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.
Claims
1. An ecological water purification system for the resource utilization of domestic sewage in rural areas, characterized in that: The system includes a black water digester (1), a regulating and slag-separating tank (2), and a biological-ecological combined water purification device (3), which are connected in sequence. The black water digester (1) and the regulating and slag-separating tank (2) are located below ground level, and a black water inlet pipe (4) and a supernatant water pipe (8) are respectively connected to one side of the black water digester (1) and the regulating and slag-separating tank (2). A check valve (15) is installed on the black water inlet pipe (4) and the grey water inlet pipe (9). The black water digester (1) is equipped with a black water inlet coarse and fine screen (5) and a fertilizer solution lift pump (6). The fertilizer liquid intake pipe (7) is fixedly connected to the top and the other end of the fertilizer liquid intake pipe (7) extends to the ground. The regulating slag-separating tank (2) is equipped with a coarse and fine screen for ash water inlet (10), an ash water lifting pump (11), and a float level switch (12). The ash water lifting pump (11) is fixedly connected to a connecting pipe (17) and a basket filter (13) is provided on the connecting pipe (17). The other end of the connecting pipe (17) is placed on the biological-ecological combined water purification device (3). The biological-ecological combined water purification device (3) is equipped with an outlet pipe (14) at the bottom. The biological-ecological combined water purification device (3) includes a rock layer, a groundwater layer, a soil layer, and a vegetation layer. Black water enters the black water digestion tank (1) through the black water inlet pipe (4) and the black water inlet coarse and fine screen (5). After the black water inlet coarse and fine screen (5) removes larger solids, it enters the black water digestion tank (1) for digestion and fermentation. The fertilizer solution produced after digestion and fermentation can be taken out by the fertilizer solution lift pump (6) through the fertilizer solution take-up pipe (7) for irrigation. Ash water enters the regulating slag-separating tank (2) through the ash water inlet pipe (9) and the ash water inlet coarse and fine screen (10). After the ash water inlet coarse and fine screen (10) removes larger solids, it enters the regulating slag-separating tank. The supernatant from the black water digestion tank (1) is deposited in the sedimentation tank (2) and enters the regulating slag separation tank (2) through the supernatant water pipe (8). It is then lifted by the ash water lifting pump (11) in the regulating slag separation tank (2) and filtered through the basket filter (13) before entering the biological-ecological combined water purification device (3). It is then further purified by the absorption and degradation of various wetland and terrestrial plants in the biological-ecological combined water purification device (3) and the filtration and adsorption of multi-stage packing. The water flows into the farmland irrigation ditch by gravity through the outlet pipe (14).
2. The ecological water purification system for the resource utilization of rural domestic sewage according to claim 1, characterized in that: The black water digester (1) and the regulating slag separator (2) are interconnected by the supernatant water pipe (8) and the supernatant water pipe (8) is equipped with a check valve (16).
3. The ecological water purification system for the resource utilization of rural domestic sewage according to claim 1, characterized in that: The lowermost part of the Earth's crust, consisting of rock layers, is composed of different types of rocks.
4. The ecological water purification system for the resource utilization of rural domestic sewage according to claim 1, characterized in that: The groundwater layer is located below the rock layer and is mainly composed of groundwater, existing between soil particles or in rock fissures.
5. The ecological water purification system for the resource utilization of rural domestic sewage according to claim 1, characterized in that: The soil layer is located above the groundwater layer and is mainly composed of minerals, organic matter, air, and moisture. Tree roots and other organisms often exist in this layer.
6. The ecological water purification system for the resource utilization of rural domestic sewage according to claim 1, characterized in that: The vegetation layer is located above the soil layer and consists of various plants.
7. The ecological water purification system for the resource utilization of rural domestic sewage according to claim 1, characterized in that: The basket filter (13) includes a basket, an inlet and outlet, and a baffle plate.