Environment-friendly sewage filtering system and filtering method

Abstract

The invention discloses an environment-friendly sewage filtration system and a filtration method, and relates to the technical field of sewage filtration, and the environment-friendly sewage filtration system comprises a primary precipitation unit, a biological filtration unit is arranged on the right side of the primary precipitation unit, and a disinfection unit is arranged on the rear side of the primary precipitation unit; a fine filtering unit is arranged on the rear side of the biological filtering unit, the primary precipitation unit and the biological filtering unit are arranged between the primary precipitation unit and the biological filtering unit, and the biological filtering unit and the fine filtering unit are arranged between the biological filtering unit and the fine filtering unit. According to the environment-friendly sewage filtering system and the filtering method, a multi-stage filtering technology is adopted, most pollutants including suspended particles, microorganisms and dissolvable harmful substances in garden sewage can be effectively removed by utilizing a multi-layer filtering structure, the filtered sewage can be reused for garden irrigation, dependence on natural water resources is reduced, and the environment-friendly sewage filtering system and the filtering method have the advantages of environmental protection and environmental protection. A remarkable water-saving effect is achieved; and a microbial degradation technology is used, so that secondary pollution is avoided.

Description

Technical Field

[0001] This invention relates to the field of wastewater filtration technology, specifically to an environmentally friendly wastewater filtration system and filtration method. Background Technology

[0002] Wastewater in gardens mainly consists of domestic sewage and rainwater. Since the wastewater generated in scenic gardens is primarily domestic sewage, it contains a large amount of organic matter and bacteria, posing a certain degree of harm. Basic wastewater treatment methods include physical, biological, and chemical methods. These methods often need to be used in combination. To improve the recycling efficiency of garden wastewater, reduce water waste, and achieve energy conservation and environmental protection, this invention proposes an environmentally friendly wastewater filtration system and method. Summary of the Invention

[0003] In view of the above-mentioned shortcomings in the lack of corresponding recycling and treatment equipment for garden wastewater, this paper provides a technical solution for an environmentally friendly wastewater filtration system.

[0004] It includes a primary sedimentation unit, a biological filtration unit is arranged on the right side of the primary sedimentation unit, a disinfection unit is arranged on the rear side of the primary sedimentation unit, a fine filtration unit is arranged on the rear side of the biological filtration unit, and a sewage flow pump set is provided between the primary sedimentation unit and the biological filtration unit, between the biological filtration unit and the fine filtration unit, and between the fine filtration unit and the disinfection unit. The primary sedimentation unit includes a sedimentation tank, a partition plate fixed at the bottom of the sedimentation tank cavity, and 20-30 equidistant V-shaped folding plates fixed at the top of the sedimentation tank cavity. The V-shaped folding plates are spaced apart to allow sewage to flow and settle. The partition plate is inlaid with 30-36 sedimentation tanks for sludge settling at equal intervals. The biological filtration unit includes a biological filtration pool, a packing frame fixedly connected to the middle area of ​​the inner cavity of the biological filtration pool, and honeycomb-shaped biological packing embedded and fixed inside the packing frame. The fine filtration unit includes a sand and gravel filter pool, a sand and gravel perforated frame fixed in the bottom area of ​​the inner cavity of the sand and gravel filter pool, and an activated carbon perforated frame fixed in the top area of ​​the inner cavity of the sand and gravel filter pool. The inner cavity of the sand and gravel perforated frame is filled with small sand and gravel particles, and the inner cavity of the activated carbon perforated frame is filled with activated carbon particles. The disinfection unit includes a settling tank, three horizontal plates fixed to the upper surface of the settling tank, and 15 ultraviolet disinfection lamps fixed to the lower surface of the horizontal plates. The lamp tubes of the ultraviolet disinfection lamps are submerged in the inner cavity of the settling tank. The sewage flow pump set includes a sewage pump, a drain pipe fixed to the discharge port of the sewage pump, and an inlet pipe fixed to the inlet port of the sewage pump. Valves are provided at the connection points between the inlet pipe and the sewage pump, and at the connection points between the drain pipe and the sewage pump.

[0005] In the above-mentioned technical solution of an environmentally friendly wastewater filtration system, preferably: there is a 10-15cm gap between the bottom surface of the partition plate and the bottom surface of the inner cavity of the sedimentation tank, a 2-5cm gap between the bottom end of the sedimentation tank and the bottom surface of the inner cavity of the sedimentation tank, and a sewage discharge pipe is provided at the bottom of the sedimentation tank.

[0006] In the above-mentioned technical solution of an environmentally friendly wastewater filtration system, preferably: an inlet pipe is provided at the top of the side wall of the sedimentation tank, there is a distance of 15-30cm between the bottom end face of the V-shaped baffle and the top surface of the partition plate, and the sewage inlet pipe between the primary sedimentation unit and the biological filtration unit passes through the inner cavity of the sedimentation tank, and the sewage inlet pipe is located above the V-shaped baffle.

[0007] In the above-mentioned technical solution of an environmentally friendly wastewater filtration system, preferably: the sewage pipe between the primary sedimentation unit and the biological filtration unit extends into the inner cavity of the biological filtration tank, and the sewage pipe is located below the packing frame and the honeycomb biological packing.

[0008] In the above-mentioned technical solution of an environmentally friendly wastewater filtration system, preferably: the inside of the packing frame is provided with a notch for embedding and fixing the honeycomb biological packing, the honeycomb biological packing is composed of 200-300 equidistantly arranged hollow epoxy fiberglass hexagonal prisms, and microorganisms are provided on the inner surface of the honeycomb biological packing through biofilm technology.

[0009] In the above-mentioned technical solution of an environmentally friendly wastewater filtration system, preferably: the sewage pipe between the biological filtration unit and the fine filtration unit extends into the bottom area of ​​the inner cavity of the sand and gravel filtration tank; the bottom surface of the sand and gravel hollow frame has a distance of 10-25cm from the bottom surface of the inner cavity of the sand and gravel filtration tank; and the bottom surface of the activated carbon hollow frame has a distance of 10-15cm from the top end face of the sand and gravel hollow frame.

[0010] In the above-mentioned technical solution of an environmentally friendly wastewater filtration system, preferably: the interior of the sand and gravel hollow frame and the activated carbon hollow frame are provided with several equally spaced through holes for the sewage to flow from bottom to top.

[0011] In the above-mentioned technical solution of an environmentally friendly wastewater filtration system, preferably: the drain pipe between the disinfection unit and the fine filtration unit extends into the bottom of the inner cavity of the settling tank.

[0012] In the above-mentioned technical solution of an environmentally friendly wastewater filtration system, preferably: five ultraviolet disinfection lamps are installed on the bottom surface of the horizontal plate, and a drainage pipe is provided on the side wall of the settling tank.

[0013] An environmentally friendly wastewater filtration method specifically includes the following steps: S1: Wastewater enters the sedimentation tank through the inlet pipe. Under the action of gravity, large particles settle to the bottom. The supernatant in the upper layer of the biological filter tank is drawn into the biological filter tank by the wastewater flow pump group. S2: After sedimentation, the wastewater flows into the biological filter tank, where the content of organic pollutants in the wastewater is reduced through the degradation by microorganisms, thereby reducing the biochemical oxygen demand and chemical oxygen demand of the wastewater. S3: Wastewater that has undergone biological filtration enters the sand and gravel filtration tank. First, it passes through a sand filtration device to remove fine suspended particles, and then it passes through activated carbon adsorption to remove odors and dissolved harmful substances from the water. This is used to further remove odors, heavy metals and other dissolved harmful substances from the wastewater. S4: The finely filtered wastewater enters the settling tank, where it is disinfected using ultraviolet disinfection lamps or ozone to remove residual bacteria and viruses, ensuring that the filtered water meets the safety standards for reuse.

[0014] As can be seen from the above technical solution, the present invention provides an environmentally friendly wastewater filtration system and filtration method. Compared with the prior art, the present invention has the following beneficial effects: The technical solution of this invention employs multi-stage filtration technology, which utilizes a multi-layered filtration structure to effectively remove most pollutants from garden wastewater, including suspended particles, microorganisms, and dissolved harmful substances. The filtered wastewater can be reused for garden irrigation, reducing dependence on natural water resources and achieving significant water-saving effects. Furthermore, the use of microbial degradation technology prevents secondary pollution, making it safe and environmentally friendly. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments of the present invention or the prior art will be briefly introduced and explained below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the wastewater filtration system; Figure 2 This is a schematic diagram of the primary precipitation unit; Figure 3 This is a schematic diagram of a biological filtration unit; Figure 4 This is a schematic diagram of a fine filtration unit; Figure 5 This is a schematic diagram of a disinfection unit; Figure 6 This is a schematic diagram of a sewage flow pump set.

[0017] Appendix Figure 1 -Appendix Figure 6 The correspondence between the components is as follows: 1. Primary sedimentation unit; 11. Sedimentation tank; 12. Sedimentation trough; 13. Inlet pipe; 14. V-shaped baffle; 15. Divider bottom plate; 2. Biological filtration unit; 21. Biological filtration tank; 22. Packing material frame; 23. Honeycomb biological packing material; 3. Fine filtration unit; 31. Sand and gravel filtration tank; 32. Sand and gravel hollow frame; 33. Activated carbon hollow frame; 4. Disinfection unit; 41. Settling tank; 42. Horizontal plate; 43. Ultraviolet disinfection lamp; 5. Sewage flow pump set; 51. Sewage pump; 52. Sewage discharge pipe; 53. Valve; 54. Sewage inlet pipe. Detailed Implementation

[0018] 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 embodiments described below 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] To provide a clearer explanation and illustration of the technical solution and implementation of the present invention, the following describes preferred embodiments of the technical solution of the present invention.

[0020] A preferred technical solution for an environmentally friendly wastewater filtration system: Refer to the instruction manual appendix Figure 1 As shown: It includes a primary sedimentation unit 1, a biological filtration unit 2 is arranged on the right side of the primary sedimentation unit 1, a disinfection unit 4 is arranged on the rear side of the primary sedimentation unit 1, a fine filtration unit 3 is arranged on the rear side of the biological filtration unit 2, and a sewage flow pump group 5 is provided between the primary sedimentation unit 1 and the biological filtration unit 2, between the biological filtration unit 2 and the fine filtration unit 3, and between the fine filtration unit 3 and the disinfection unit 4. Refer to the instruction manual appendix Figure 2 As shown: The primary sedimentation unit 1 includes a sedimentation tank 11, a partition bottom plate 15 fixed in the bottom area of ​​the inner cavity of the sedimentation tank 11, and 20-30 V-shaped folding plates 14 arranged at equal intervals fixed in the top area of ​​the inner cavity of the sedimentation tank 11. The V-shaped folding plates 14 have a spacing between each other to allow sewage to flow and settle. The partition bottom plate 15 has 30-36 sedimentation tanks 12 for sludge settling embedded at equal intervals inside. Refer to the instruction manual appendix Figure 3 As shown: The biological filtration unit 2 includes a biological filtration pool 21, a packing frame 22 fixedly connected to the middle area of ​​the inner cavity of the biological filtration pool 21, and a honeycomb biological packing 23 embedded and fixed inside the packing frame 22. Refer to the instruction manual appendix Figure 4 As shown: The fine filtration unit 3 includes a sand and gravel filter pool 31, a sand and gravel perforated frame 32 fixed in the bottom area of ​​the inner cavity of the sand and gravel filter pool 31, and an activated carbon perforated frame 33 fixed in the top area of ​​the inner cavity of the sand and gravel filter pool 31. The inner cavity of the sand and gravel perforated frame 32 is filled with small sand and gravel particles, and the inner cavity of the activated carbon perforated frame 33 is filled with activated carbon particles. Refer to the instruction manual appendix Figure 4 As shown: The disinfection unit 4 includes a settling tank 41, three horizontal plates 42 fixed to the upper end face of the settling tank 41, and 15 ultraviolet disinfection lamps 43 fixed to the lower surface of the horizontal plates 42. The lamp tubes of the ultraviolet disinfection lamps 43 are submerged in the inner cavity of the settling tank 41. Refer to the instruction manual appendix Figure 6 As shown: The sewage flow pump set 5 includes a sewage pump 51, a sewage pipe 52 fixed on the discharge port of the sewage pump 51, and an inlet pipe 54 fixed on the inlet port of the sewage pump 51. Valves 53 are provided at the connection positions of the inlet pipe 54 and the sewage pump 51, and at the connection positions of the sewage pipe 52 and the sewage pump 51.

[0021] Refer to the instruction manual appendix Figure 2 As shown: there is a 10-15cm gap between the bottom surface of the partition plate 15 and the bottom surface of the inner cavity of the sedimentation tank 11; there is a 2-5cm gap between the bottom end of the sedimentation tank 12 and the bottom surface of the inner cavity of the sedimentation tank 11; a sewage discharge pipe is provided at the bottom of the sedimentation tank 11; an inlet pipe 13 is provided at the top of the side wall of the sedimentation tank 11; there is a 15-30cm gap between the bottom end face of the V-shaped baffle 14 and the top surface of the partition plate 15; the sewage inlet pipe 54 between the primary sedimentation unit 1 and the biological filtration unit 2 penetrates into the inner cavity of the sedimentation tank 11, and the sewage inlet pipe 54 is located above the V-shaped baffle 14.

[0022] Refer to the instruction manual appendix Figure 3 As shown: The sewage pipe 52 between the primary sedimentation unit 1 and the biological filtration unit 2 extends into the inner cavity of the biological filtration tank 21. The sewage pipe 52 is located below the packing frame 22 and the honeycomb biological packing 23. The inside of the packing frame 22 is provided with notches for the honeycomb biological packing 23 to be embedded and fixed. The honeycomb biological packing 23 is composed of 200-300 hollow epoxy fiberglass hexagonal prisms arranged at equal intervals, and microorganisms are provided on the inner surface of the honeycomb biological packing 23 through biofilm technology.

[0023] Refer to the instruction manual appendix Figure 4 As shown: the drain pipe 52 between the biological filtration unit 2 and the fine filtration unit 3 extends into the bottom area of ​​the inner cavity of the sand and gravel filter tank 31. There is a gap of 10-25cm between the bottom surface of the sand and gravel hollow frame 32 and the bottom surface of the inner cavity of the sand and gravel filter tank 31, and a gap of 10-15cm between the bottom surface of the activated carbon hollow frame 33 and the top end face of the sand and gravel hollow frame 32. Both the sand and gravel hollow frame 32 and the activated carbon hollow frame 33 have several equally spaced through holes inside for the sewage to flow from bottom to top.

[0024] Refer to the instruction manual appendix Figure 5 As shown: the drain pipe 52 between the disinfection unit 4 and the fine filtration unit 3 extends into the bottom of the inner cavity of the settling tank 41. Five ultraviolet disinfection lamps 43 are installed on the bottom surface of the horizontal plate 42. Drainage pipes are provided on the side wall of the settling tank 41.

[0025] A preferred technical solution for an environmentally friendly wastewater filtration method: Wastewater enters the sedimentation tank 11 through the inlet pipe 13. Under gravity, large particles settle to the bottom. The supernatant in the upper layer of the biological filter tank 21 is pumped into the biological filter tank 21 by the wastewater flow pump unit 5. The settled wastewater flows into the biological filter tank 21, where the content of organic pollutants in the wastewater is reduced through the degradation of microorganisms, thus reducing the biochemical oxygen demand (BOD) and chemical oxygen demand (COD). The wastewater after biological filtration enters the sand and gravel filter tank 31, where fine suspended particles are first removed by the sand filter device, and then odors and dissolved harmful substances in the water are removed by activated carbon adsorption, further removing odors, heavy metals, and other dissolved harmful substances from the wastewater. The finely filtered wastewater enters the settling tank 41, where it is disinfected by ultraviolet disinfection lamps 43 or by ozone to remove residual bacteria and viruses, ensuring that the filtered water meets the safety standards for reuse.

[0026] This invention is not limited to the preferred embodiments described above. Anyone should understand that structural changes made under the guidance of this invention, and any technical solutions that are the same as or similar to this invention, fall within the protection scope of this invention. Finally, it should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation of this application. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of this application, should still fall within the scope of the technical content disclosed in this application.

Claims

1. An environmentally friendly wastewater filtration system, characterized in that: The system includes a primary sedimentation unit (1), a biological filtration unit (2), a fine filtration unit (3), and a disinfection unit (4). The biological filtration unit (2) is located on the right side of the primary sedimentation unit (1), the disinfection unit (4) is located on the rear side of the primary sedimentation unit (1), and the fine filtration unit (3) is located on the rear side of the biological filtration unit (2). Sewage flow pump sets (5) are provided between the primary sedimentation unit (1) and the biological filtration unit (2), between the biological filtration unit (2) and the fine filtration unit (3), and between the fine filtration unit (3) and the disinfection unit (4). The primary sedimentation unit (1) includes a sedimentation tank (11), a partition plate (15) fixed in the bottom area of ​​the sedimentation tank (11), and 20-30 V-shaped folding plates (14) arranged at equal intervals in the top area of ​​the sedimentation tank (11). The V-shaped folding plates (14) have a spacing between each other to allow sewage to flow and settle. The partition plate (15) has 30-36 sedimentation tanks (12) for sludge settling embedded at equal intervals inside. The biological filtration unit (2) includes a biological filtration pool (21), a packing frame (22) fixedly connected to the middle area of ​​the inner cavity of the biological filtration pool (21), and a honeycomb biological packing (23) embedded and fixed inside the packing frame (22). The fine filtration unit (3) includes a sand and gravel filter pool (31), a sand and gravel hollow frame (32) fixed in the bottom area of ​​the inner cavity of the sand and gravel filter pool (31), and an activated carbon hollow frame (33) fixed in the top area of ​​the inner cavity of the sand and gravel filter pool (31). The inner cavity of the sand and gravel hollow frame (32) is filled with small sand and gravel particles, and the inner cavity of the activated carbon hollow frame (33) is filled with activated carbon particles. The disinfection unit (4) includes a settling tank (41), three horizontal plates (42) fixed to the upper end of the settling tank (41), and 15 ultraviolet disinfection lamps (43) fixed to the lower surface of the horizontal plates (42). The lamp tubes of the ultraviolet disinfection lamps (43) are submerged in the inner cavity of the settling tank (41). The sewage flow pump set (5) includes a sewage pump (51), a sewage pipe (52) fixed on the discharge port of the sewage pump (51), and a sewage pipe (54) fixed on the inlet port of the sewage pump (51). Valves (53) are provided at the connection positions of the sewage pipe (54) and the sewage pump (51), as well as at the connection positions of the sewage pipe (52) and the sewage pump (51).

2. The environmentally friendly wastewater filtration system according to claim 1, characterized in that: The bottom surface of the partition plate (15) is 10-15cm away from the bottom surface of the inner cavity of the sedimentation tank (11), the bottom end of the sedimentation tank (12) is 2-5cm away from the bottom surface of the inner cavity of the sedimentation tank (11), and a sewage pipe is provided at the bottom of the sedimentation tank (11).

3. The environmentally friendly wastewater filtration system according to claim 1, characterized in that: The sedimentation tank (11) has an inlet pipe (13) at the top of its side wall. The bottom end face of the V-shaped baffle (14) and the top surface of the partition plate (15) are 15-30cm apart. The sludge inlet pipe (54) between the primary sedimentation unit (1) and the biological filtration unit (2) penetrates into the inner cavity of the sedimentation tank (11) and is located above the V-shaped baffle (14).

4. The environmentally friendly wastewater filtration system according to claim 1, characterized in that: The drain pipe (52) between the primary sedimentation unit (1) and the biological filtration unit (2) extends into the inner cavity of the biological filtration tank (21), and the drain pipe (52) is located below the packing frame (22) and the honeycomb biological packing (23).

5. The environmentally friendly wastewater filtration system according to claim 1, characterized in that: The inside of the filler frame (22) is provided with a notch for embedding and fixing the honeycomb biological filler (23). The honeycomb biological filler (23) is composed of 200-300 equidistant hollow epoxy fiberglass hexagonal prisms, and microorganisms are provided on the inner surface of the honeycomb biological filler (23) by means of biofilm technology.

6. The environmentally friendly wastewater filtration system according to claim 1, characterized in that: The drain pipe (52) between the biological filtration unit (2) and the fine filtration unit (3) extends into the bottom area of ​​the inner cavity of the sand and gravel filter tank (31). The bottom surface of the sand and gravel hollow frame (32) is 10-25cm away from the bottom surface of the inner cavity of the sand and gravel filter tank (31), and the bottom surface of the activated carbon hollow frame (33) is 10-15cm away from the top end face of the sand and gravel hollow frame (32).

7. The environmentally friendly wastewater filtration system according to claim 1, characterized in that: The interior of both the sand and gravel hollow frame (32) and the activated carbon hollow frame (33) is provided with several equally spaced through holes for the sewage to flow from bottom to top.

8. The environmentally friendly wastewater filtration system according to claim 1, characterized in that: The drain pipe (52) between the disinfection unit (4) and the fine filtration unit (3) extends into the bottom of the inner cavity of the settling tank (41).

9. The environmentally friendly wastewater filtration system according to claim 1, characterized in that: Five ultraviolet disinfection lamps (43) are installed on the bottom surface of the horizontal plate (42), and a drainage pipe is provided on the side wall of the settling pool (41).

10. An environmentally friendly wastewater filtration method, characterized in that: An environmentally friendly wastewater filtration system according to any one of claims 1-9, wherein the filtration method comprises the following steps: S1: Wastewater enters the sedimentation tank (11) through the inlet pipe (13). Under the action of gravity, large particles settle to the bottom. The supernatant in the upper layer of the biological filter tank (21) is drawn into the biological filter tank (21) by the wastewater flow pump group (5). S2: The settled wastewater flows into the biological filter (21), where the content of organic pollutants in the wastewater is reduced through the degradation of microorganisms, thereby reducing the biochemical oxygen demand and chemical oxygen demand of the wastewater. S3: Wastewater that has undergone biological filtration enters the sand and gravel filter tank (31). First, it passes through the sand filter device to remove fine suspended particles, and then it passes through activated carbon adsorption to remove odors and dissolved harmful substances in the water, which is used to further remove odors, heavy metals and other dissolved harmful substances from the wastewater. S4: The finely filtered wastewater enters the settling tank (41) and is disinfected by ultraviolet disinfection lamps (43) or ozone to remove residual bacteria and viruses and ensure that the filtered water meets the safety standards for reuse.

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