Improved tower type sewage ecological purification tank

Abstract

An improved tower type sewage ecological purification tank, comprising four layers of purification tanks arranged longitudinally, the area gradually enlarges from top to bottom; the ecological purification tank is divided into a multifunctional sedimentation area (located in the outer ring area of the bottom layer of the purification tank) and an ecological purification area (including the three layers of purification tanks from top to bottom and the purification tank located in the inner ring area of the bottom layer), the ecological purification area is divided into four layers of tower tanks, from top to bottom: the first denitrification tank, the second denitrification tank, the first drop tank, and the second drop tank, each purification tank is filled with a certain amount of biological filler and planted with a certain density of emergent plants, to remove organic matter and nitrogen and phosphorus in sewage; the multifunctional sedimentation area is located in the outer ring area of the second drop tank in the bottom layer, including three interconnected areas of mixing area, sedimentation area and disinfection area, wherein: the mixing area is the area where raw sewage is mixed with purified water, the sedimentation area is a baffle type sedimentation area, the disinfection area is separated from the sedimentation area by an arc baffle, and the sewage is disinfected in the disinfection area.

Description

Technical Field

[0001] This utility model relates to the field of ecological wastewater treatment, specifically to an improved tower-type ecological wastewater purification tank. Background Technology

[0002] Tourism has become a very important leisure activity for people today, and sewage treatment in scenic areas has become a key focus. There is also a lot of scattered sewage from villages, seaside resorts, and wildlife parks that cannot be connected to sewage pipe networks or whose connection costs are too high. Effective treatment is necessary, and it is essential to use some decentralized sewage treatment facilities.

[0003] Currently, most areas still use traditional A methods for handling decentralized domestic sewage. 2 Traditional wastewater treatment processes such as the ¹⁸O process, activated sludge process, and SBR process are characterized by large land area requirements, high costs, complex operation and management, and severe noise pollution. They are not suitable for distributed and decentralized domestic wastewater treatment. Due to the high construction and operating costs, some underdeveloped areas cannot afford such high wastewater treatment costs (including electricity and engineering maintenance costs). Currently, traditional treatment processes require a large amount of electrical machinery and equipment, resulting in extremely high energy demand and high carbon emissions during the treatment process. In addition to consuming a large amount of energy, they also cause secondary pollution such as noise and greenhouse gases. Therefore, there is an urgent need to find a wastewater treatment device that reduces energy consumption and emissions and has high treatment efficiency. Summary of the Invention

[0004] This invention provides an improved tower-type ecological sewage purification tank, which can effectively treat and purify dispersed domestic sewage. It has many advantages such as small footprint, low construction cost, low energy consumption, high treatment efficiency, and reduced packing blockage, thus solving the shortcomings of the prior art. At the same time, this invention is also suitable for home or office aquarium purification.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an improved tower-type ecological sewage purification tank, comprising four layers of purification tanks, the purification tank being the area enclosed by the outer wall and the bottom plate, the purification tanks being arranged from top to bottom in a total of four layers, namely the first denitrification tank, the second denitrification tank, the first drop tank, and the second drop tank, which are connected and supported by hollow columns.

[0006] The first denitrification tank consists of an outer wall and a bottom plate. The second denitrification tank consists of an outer wall and a bottom plate. The first cascade consists of an outer wall and a bottom plate. The second cascade consists of an outer wall and a bottom plate. The hollow column, together with the first denitrification tank, the second denitrification tank, the first cascade, and the second cascade, forms an ecological purification zone. The area formed by the outer wall of the second cascade and the outer wall of the sedimentation tank is a multi-functional sedimentation tank, which includes a mixing zone, a sedimentation zone, and a disinfection zone. The bottom of the mixing zone of the multi-functional sedimentation tank is equipped with a sewage lift pump. The two ends of the mixing zone are sedimentation zones, which are equipped with baffles. The two ends of the sedimentation zones are equipped with arc-shaped baffles that are connected to the outer wall of the second drop trough and the outer wall of the sedimentation tank, forming a disinfection zone.

[0007] A water distributor is installed at the top of the hollow column; A booster pump is installed at the end of the sedimentation zone of the multi-functional sedimentation tank, and the outlet of the booster pump is connected to the central water distributor at the top of the purification tank. The first denitrification tank, the second denitrification tank, the first cascade tank, and the second cascade tank are all filled with a certain amount of filler material and planted with emergent plants at a certain density.

[0008] Furthermore, a return pipe and a water outlet pipe are provided on the outer wall of the second drop trough. A water outlet pipe regulating valve is provided on the water outlet pipe, and a return pipe regulating valve is provided on the return pipe. To facilitate the discharge of purified water, a main outlet pipe is installed on the outer wall 4-2 of the sedimentation tank.

[0009] Furthermore, a fixing ring is provided on the upper part of the outer wall of the purification tank, through which the rope passes and is connected to the hollow column at the other end; The main body of this utility model is designed as a modified tower structure. The center of the main body is a hollow column, and the area enclosed by the hollow column and the outer wall is a purification tank. Except for the multi-functional sedimentation tank, all the annular hollow structures are filled with porous volcanic rock and other fillers and emergent plants.

[0010] This filter is an improved tower-type ecological filter based on biofilm treatment of domestic sewage. It has a simple structure, small footprint, low construction cost, and high economic efficiency. It can efficiently treat decentralized domestic sewage and small workshop wastewater. Moreover, this process eliminates a large amount of electric machinery and avoids the traditional blower aeration process, which greatly saves energy and reduces secondary pollution and carbon emissions during operation. This ecological filter also has certain landscape functions and is particularly suitable for promotion and use in rural areas, scenic spots, parks, shopping malls and other areas with small water volume and decentralized sewage treatment needs. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a top view of the ecological filter in this utility model. In the diagram: 1-1, outer wall of the first denitrification tank; 1-1-2, bottom plate of the first denitrification tank; 2-1, outer wall of the second denitrification tank; 2-1-2, bottom plate of the second denitrification tank; 3-1, outer wall of the first cascade; 3-1-2, bottom plate of the first cascade; 4-1, outer wall of the second cascade; 4-1-2, bottom plate of the second cascade; 4-2, outer wall of the sedimentation tank; 5, hollow column; 6, packing material; 7, effluent pipe; 8, return pipe; 9, main effluent pipe; 10, wastewater lift pump; 11, emergent plants; 12, effluent pipe regulating valve; 13, return pipe regulating valve; 14, water distributor; 15, lift pump; 16, mixing zone; 17, sedimentation zone; 18, disinfection zone; 19, pipes; 20, baffle; 21, arc-shaped baffle. Detailed Implementation

[0012] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings of the embodiments of this utility model. However, this utility model is not limited to the following embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0013] like Figure 1 and Figure 2 The diagram shows an improved tower-type ecological wastewater purification tank, comprising an ecological purification zone and a multi-functional sedimentation zone. The multi-functional sedimentation zone includes three interconnected areas: a mixing zone 16, a sedimentation zone 17, and a disinfection zone 18. Specifically: the mixing zone is where raw wastewater and purified water are mixed, and coagulants can be added to this zone to accelerate the coagulation and sedimentation of particles in the wastewater; the sedimentation zone is a baffle-type sedimentation zone, where baffles 20 reduce the wastewater flow velocity; the disinfection zone is separated from the sedimentation zone by an arc-shaped baffle 21, and the wastewater is disinfected in the disinfection zone 18.

[0014] The ecological purification zone includes a first denitrification tank, a second denitrification tank, a first cascade, and a second cascade. The first denitrification tank consists of the outer wall 1-1 and the bottom plate 1-1-2. The second denitrification tank consists of the outer wall 2-1 and the bottom plate 2-1-2. The first cascade consists of the outer wall 3-1 and the bottom plate 3-1-2. The second cascade consists of the outer wall 4-1 and the bottom plate 4-1-2. The outer wall 4-1 of the second cascade has a sedimentation tank outer wall 4-2 on its outer side, and the top of the outer wall 4-1 of the second cascade is higher than the top of the outer wall 4-2 of the sedimentation tank. The top of the hollow column 5 is lower than the top of the outer wall 1-1 of the first denitrification tank.

[0015] The hollow column 5 forms an ecological purification zone with the outer wall 1-1 of the first denitrification tank, the outer wall 2-1 of the second denitrification tank, the outer wall 3-1 of the first cascade, and the outer wall 4-1 of the second cascade. The outer wall 4-1 of the second cascade and the outer wall 4-2 of the sedimentation tank form a multi-functional sedimentation zone. Wastewater first undergoes preliminary sedimentation and coagulation in the multi-functional sedimentation zone to remove inorganic and organic particles.

[0016] The multi-functional sedimentation zone mixing area is equipped with a sewage lift pump 10; the sedimentation zone of the multi-functional sedimentation zone is equipped with a lift pump 15, and the outlet is the water distributor 14 at the top of the first denitrification tank.

[0017] The first denitrification tank, the second denitrification tank, the first cascade tank, and the second cascade tank of the ecological purification zone are all filled with a certain amount of filler material 6. Emergent plants 11, such as calamus and windmill grass, are planted on top of the filler material 6 at a certain density to achieve the effect of further purifying the water quality.

[0018] To facilitate the return of wastewater from the purification tank to the multi-functional sedimentation tank for multi-stage circulation purification, a return pipe 8 is installed on the outer wall 4-1 of the second drop tank. The lift pump 15 draws water from the bottom of the second drop tank and flows it into the multi-functional sedimentation area through the return pipe 8 to continue a new round of purification. A return pipe regulating valve 13 is installed on the return pipe 8. When the circulation time reaches a certain value, the return pipe regulating valve 13 is closed and the outlet pipe regulating valve 12 is opened.

[0019] To facilitate the purification of water in the purification tank to meet higher requirements, a water outlet pipe 7 is installed on the outer wall 4-1 of the second drop tank. A water outlet pipe regulating valve 12 is installed on the water outlet pipe 7. Water from the lift pump 15 flows through the water outlet pipe 7 into the disinfection zone 18 for disinfection.

[0020] To facilitate the discharge of purified water, a main outlet pipe 9 is installed on the outer wall 4-2 of the sedimentation tank.

[0021] The working principle of this utility model: Under the action of the sewage lift pump 10, sewage enters the mixing zone 16 of the multi-functional sedimentation zone from the septic tank. The sewage is diluted and mixed with the original sewage at the pipe outlet and the return pipe outlet. The mixed sewage flows to the sedimentation zone 17. The baffle 20 of the sedimentation zone hinders the water flow and forms a vortex, which reduces the water flow velocity. The settled sewage is lifted by the lift pump 15 to the water distributor 14 at the end of the sedimentation zone 17. The water distributor 14 evenly distributes the sewage onto the packing material 6 of the first denitrification tank. The biofilm attached to the biological packing material removes organic nitrogen compounds through the denitrification reaction.

[0022] Wastewater, after being filtered and reacted by biological packing material, flows to the bottom of the first denitrification tank. It then enters the second denitrification tank through pipe 19 to continue the denitrification reaction. The first and second denitrification tanks are connected via pipe 19, maintaining an anaerobic environment. This is the preferred scheme. After reaching the bottom of the second denitrification tank, the wastewater flows upwards, adhering closely to the outer wall of the second denitrification tank, and falls to the next layer, the first cascade tank. This allows the wastewater to fully contact with oxygen in the air, achieving oxygen enrichment of the water body, increasing the activity of aerobic microorganisms, and promoting COD degradation and ammonia nitrogen conversion. Water in the first cascade tank adheres closely to the outer wall 3-1 as it falls to... The water flow in the second cascade tank undergoes nitrification. The booster pump 15 draws water from the bottom of the second cascade tank and flows through the return pipe 8 into the mixing zone 16 of the multi-functional sedimentation area for another round of purification. The return pipe 8 is equipped with a return pipe regulating valve 13. Once the circulation time reaches a certain value, the return pipe regulating valve 13 is closed, and the outlet pipe regulating valve 12 is opened. The water from the booster pump 15 flows through the outlet pipe 7 into the disinfection zone 18 for disinfection, and is then discharged. Different aquatic plants are selected and planted in the purification tank according to the characteristics of domestic sewage in different areas and seasonal climate changes, which can improve sewage treatment efficiency and achieve both economic and aesthetic benefits. Porous fillers such as volcanic rock are used to adsorb phosphates and provide a place for biological reproduction, forming a biofilm. The entire modified tower-type ecological purification tank can keep sewage treatment in a dynamic cycle, improving sewage treatment capacity. The volume of the filter can be adjusted according to the needs of the water treatment scale. The circulation time can be adjusted according to the characteristics of the sewage and the purification efficiency.

[0023] The embodiments of this utility model provide a detailed description of the improved tower-type ecological sewage purification tank, but the scope of protection of this utility model is not limited thereto. Any modifications, substitutions, improvements and equivalent solutions within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An improved tower-type ecological wastewater purification tank, comprising an ecological purification zone and a multifunctional sedimentation zone, characterized in that, The ecological purification zone, from top to bottom, consists of a first denitrification tank, a second denitrification tank, a first cascade, and a second cascade. The first denitrification tank comprises the outer wall (1-1) and the bottom plate (1-1-2). The second denitrification tank comprises the outer wall (2-1) and the bottom plate (2-1-2). The first cascade comprises the outer wall (3-1) and the bottom plate (3-1-2). The second cascade comprises the outer wall (4-1) and the bottom plate (4-1-2). It is multifunctional. The sedimentation zone is a multi-functional sedimentation tank, which consists of the outer wall of the second drop tank (4-1) and the outer wall of the sedimentation tank (4-2). It also includes a hollow column (5), packing (6), a main outlet pipe (9), a sewage lift pump (10), a lift pump (15), and a water distributor (14). The sedimentation zone of the multi-functional sedimentation tank is equipped with a lift pump (15). The outlet of the lift pump (15) is the water distributor (14) of the first denitrification tank. The first denitrification tank, the second denitrification tank, the first drop tank, and the second drop tank are filled with packing (6). A certain density of emergent plants (11) are planted above the packing (6).

2. The improved tower-type ecological wastewater purification tank according to claim 1, characterized in that, The top of the hollow column (5) is lower than the top of the outer wall (1-1) of the first denitrification tank.

3. The improved tower-type ecological wastewater purification tank according to claim 1, characterized in that, The outer wall (4-1) of the second drop trough is higher than the outer wall (4-2) of the sedimentation tank.

4. The improved tower-type ecological wastewater purification tank according to claim 2, characterized in that, The outer wall (4-1) of the second drop trough is provided with an outlet pipe (7) and a return pipe (8). The outlet pipe (7) is equipped with a corresponding outlet pipe regulating valve (12), and the return pipe (8) is equipped with a corresponding return pipe regulating valve (13).

5. An improved tower-type ecological wastewater purification tank according to any one of claims 1-3, characterized in that, The multifunctional sedimentation tank is divided into a mixing zone (16), a sedimentation zone (17) and a disinfection zone (18). The sedimentation zone (17) is equipped with baffles (20) and arc-shaped baffles (21). The mixing zone (16) is connected to the sedimentation zone (17). The sedimentation zone (17) is equipped with staggered baffles (20). The disinfection zone (18) is separated from the sedimentation zone (17) by the arc-shaped baffles (21).

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