Reclaimed water filtering device

Abstract

The utility model discloses a reclaimed water filtering device, which belongs to the technical field of sewage treatment, and comprises a tank body, the upper end part of the tank body is communicated with a water inlet pipe, the lower end part of the tank body is communicated with a water outlet pipe, and three layers of filtering units are sequentially arranged in the tank body along the flow direction of a medium, the filtering unit comprises a tray arranged on the inner wall of the tank body, a water outlet hole net is arranged in the center of the tray, and a filtering material for filtering a medium is arranged on the upper end face of the tray; the tray of each layer of filter unit is provided with a backwashing spray head for washing a filter material, and each backwashing spray head is communicated with a backwashing water inlet pipe through a backwashing branch pipe; a pollution discharge branch pipe is arranged on the tank body above the filter material of each layer of filter unit, and each pollution discharge branch pipe is communicated with a pollution discharge main pipe. According to the utility model, water resources can be effectively utilized, the investment and operation cost are saved, and the maintenance amount is small.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and in particular relates to a reclaimed water filtering device. Background Art

[0002] "Recycled water" refers to non-potable water that has been treated to meet specified water quality standards and can be reused within a certain range. Because its water quality lies between "upstream water" (tap water) and "downstream water" (sewage discharged into pipes), it is called "recycled water."

[0003] To support the development of the industrial tourism zone, the park requires the construction of numerous landscape ponds and fish ponds. This requires the use of extensive tap water, which is expensive and could exceed national water usage limits. Our factory's wastewater treatment produces sufficient reclaimed water, significantly reducing costs if this water is used. However, the quality of the reclaimed water does not meet the requirements, and further treatment is required to meet the park's landscape water requirements. Summary of the Invention

[0004] In response to the problems existing in the existing technology, the utility model provides a reclaimed water filtration device that can achieve effective utilization of water resources, save investment and operating costs, require little maintenance, is equipped with a backwash device, can improve filtration efficiency, save on filter material replacement, and has high three-layer filtration efficiency, meeting the water requirements for landscaping and fish farming.

[0005] The utility model is realized as follows: a reclaimed water filtration device comprises a tank body, an upper end portion of the tank body is connected to a water inlet pipe, and a lower end portion of the tank body is connected to a water outlet pipe, and is characterized in that three layers of filter units are sequentially arranged in the tank body along the flow direction of the medium, the filter unit comprises a tray arranged on the inner wall of the tank body, a water outlet hole network is arranged in the center of the tray, and a filter material for filtering the medium is arranged on the upper end surface of the tray;

[0006] A backwash nozzle for flushing the filter material is provided on the tray of each filter unit. The backwash nozzle can flush the filter material with good flushing effect and restore the filtering performance of the filter material. Each of the backwash nozzles is connected to the backwash water inlet pipe through a backwash branch pipe.

[0007] A sewage branch pipe is provided on the tank body above the filter material of each layer of filter unit, and each sewage branch pipe is connected to the sewage main pipe.

[0008] Furthermore, the filter media of the three-layer filter unit are, in order of flow direction, quartz sand with a diameter of 3-6mm, quartz sand with a diameter of 1-2mm, and activated carbon with a diameter of 1-2mm. The quartz sand is primarily used to remove suspended solids from the water, while the activated carbon filter is primarily used to remove residual chlorine, organic matter, and disinfection by-products.

[0009] Furthermore, a material retaining net is provided at the inlet end of the sewage branch pipe to prevent the filter material from entering the sewage branch pipe.

[0010] Furthermore, the tray is tilted, and the horizontal angle between the tray and the tank body is 30 degrees, which is conducive to backwashing the filter material and draining sewage.

[0011] Furthermore, a sewage bottom pipe is provided at the bottom of the tank body to discharge the sewage that settles to the bottom.

[0012] Furthermore, the pore size of the water outlet mesh is 1 / 2 of the filter material size.

[0013] Furthermore, the outer diameter of the water outlet mesh of each filter unit is 1 / 2 of the inner diameter of the tank body; the mesh diameters of the water outlet mesh of the three-layer filter unit are 1.5mm, 0.5mm and 0.5mm respectively along the flow direction of the medium.

[0014] Furthermore, the tank body includes a tank body and a tank top, the tank top is mounted on the upper end of the tank body via fasteners, and the tray is detachably mounted on the inner wall of the tank body.

[0015] Furthermore, the total filling amount of filter material of the three-layer filter unit is 50% to 70% of the height of the tank body, and the filling amount of filter material and the size of the tank body are increased according to the water output requirements.

[0016] The advantages and technical effects of this utility model are as follows: due to the adoption of the above technical scheme, it can realize the effective utilization of water resources, save investment and operating costs, require little maintenance, and is equipped with a backwash device to improve filtration efficiency, save replacement of filter materials, and has high three-layer filtration efficiency, meeting the water requirements for landscape and fish farming.

[0017] Quartz sand filter media offers significant advantages, including high strength, long lifespan, high flow rate, and stable and reliable effluent quality. Quartz sand primarily removes suspended solids, colloids, silt, and rust from water. Activated carbon filter media, primarily activated carbon, contains numerous micropores with strong adsorption capacity, absorbing impurities from water. It is primarily used to remove residual chlorine, organic matter, and disinfection byproducts from water. It also filters ions, odors, and other impurities, significantly improving water quality. Combining these two filter media significantly improves the quality of reclaimed water, meeting landscape water requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the utility model.

[0019] In the figure: 1. Tank body; 2. Water inlet pipe; 3. Water outlet pipe; 4. Tray; 5. Filter material; 6. Backwash nozzle; 7. Backwash branch pipe; 8. Backwash water inlet pipe; 9. Sewage branch pipe; 10. Sewage main pipe; 11. Sewage bottom pipe. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] It should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0022] like Figure 1 As shown, the present application provides a reclaimed water filtration device, comprising a tank body 1, an upper end of the tank body 1 being connected to a water inlet pipe 2, a lower end of the tank body 1 being connected to a water outlet pipe 3, three layers of filter units being sequentially arranged in the tank body 1 along the flow direction of the medium, the filter unit comprising a tray 4 arranged on the inner wall of the tank body 1, a water outlet mesh being arranged in the center of the tray 4, and a filter material 5 for filtering the medium being arranged on the upper end surface of the tray 4;

[0023] A backwash nozzle 6 for flushing the filter material 5 is provided on the tray 4 of each filter unit. The nozzle end of the backwash nozzle penetrates the tray 4. The backwash nozzle 6 can flush the filter material 5 with good flushing effect and restore the filtering performance of the filter material 5. Each of the backwash nozzles 6 is connected to the backwash water inlet pipe 8 through a backwash branch pipe 7.

[0024] A sewage branch pipe 9 is provided on the tank body 1 above each layer of filter unit filter material 5 , and each sewage branch pipe 9 is connected to the sewage main pipe 10 .

[0025] Furthermore, the filter media 5 of the three-layer filter unit are, in the order of flow direction, quartz sand filter media 5 with a diameter of 3 to 6 mm, quartz sand filter media 5 with a diameter of 1 to 2 mm, and activated carbon filter media 5 with a diameter of 1 to 2 mm. The quartz sand filter media is primarily used to remove suspended solids in the water, while the activated carbon filter media is primarily used to remove residual chlorine, organic matter, and disinfection by-products in the water.

[0026] Furthermore, a material retaining net is provided at the inlet end of the sewage branch pipe 9 to prevent the filter material 5 from entering the sewage branch pipe 9 .

[0027] Furthermore, the tray 4 is tilted, and the horizontal angle between the tray 4 and the tank body 1 is 30°, which is conducive to backwashing the filter material 5 and draining sewage.

[0028] Furthermore, a sewage bottom pipe 11 is provided at the bottom of the tank body 1 to discharge sewage that has settled to the bottom.

[0029] Furthermore, the pore size of the water outlet mesh is 1 / 2 of the size of the filter material 5.

[0030] Furthermore, the outer diameter of the water outlet mesh of each filter unit is 1 / 2 of the inner diameter of the tank body 1; the mesh diameters of the water outlet mesh of the three filter units are 1.5 mm, 0.5 mm and 0.5 mm respectively along the flow direction of the medium.

[0031] Furthermore, the tank body 1 includes a tank body and a tank top, the tank top is mounted on the upper end of the tank body by fasteners, and the tray 4 is detachably mounted on the inner wall of the tank body. Specifically, the detachable installation is achieved by threaded connection or snap connection.

[0032] Furthermore, the total filling amount of the filter material 5 of the three-layer filter unit is 50% to 70% of the height of the tank body 1. The filling amount of the filter material 5 and the size of the tank body 1 are increased according to the water output requirements.

[0033] Furthermore, valves are provided on the water inlet pipe 2 , the water outlet pipe 3 , the backwash water inlet pipe 8 , the sewage main pipe 10 and the sewage bottom pipe 11 .

[0034] The recycled water enters the filter tank body 1 from the water inlet pipe 2, first contacts the filter material 5 of the first filter unit, and then passes through the water outlet mesh in the center of the tray 4 to enter the filter material 5 of the second filter unit. After filtration, it passes through the water outlet mesh in the center of the tray 4 to enter the filter material 5 of the third filter unit. After filtration, it passes through the water outlet mesh in the center of the tray 4 to enter the lower part of the tank body 1, and enters the landscape pool or fish pond through the water outlet pipe 3. After three levels of filtration, the effluent water quality meets the requirements.

[0035] After using for a period of time, the filter material 5 of the filter unit is covered with suspended matter and the water outlet is not smooth. At this time, the valve of the backwash water inlet pipe 8 is opened, and the filter material of the three-layer filter unit is backwashed with high-pressure water. A tray 4 with an inclination angle of 30° is set, and the backwashing effect is better. The flushing sewage is discharged through the sewage branch pipe 9 to the sewage main pipe 10. When the sewage becomes clean, the valve of the sewage main pipe 10 is closed and the filtration operation is started.

[0036] After running for a period of time, open the valve of the bottom sewage pipe 11 to discharge the settled sewage. After the water quality becomes clean, close the valve of the sewage pipe 11.

[0037] Due to the adoption of the above technical solution, effective utilization of water resources can be achieved, investment and operating costs can be saved, maintenance is small, and a backwash device is provided to improve filtration efficiency, save on filter material replacement, and the three-layer filtration efficiency is high, meeting the water requirements of landscaping and fish farming.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A reclaimed water filtering device, comprising a tank body, wherein the upper end of the tank body is connected to a water inlet pipe, and the lower end of the tank body is connected to a water outlet pipe, characterized in that: Three layers of filter units are sequentially arranged in the tank body along the flow direction of the medium, and the filter unit comprises a tray arranged on the inner wall of the tank body, a water outlet mesh is arranged in the center of the tray, and a filter material for filtering the medium is arranged on the upper end surface of the tray; A backwash nozzle for washing filter media is provided on the tray of each layer of filter unit, and each backwash nozzle is connected to the backwash water inlet pipe through a backwash branch pipe; A sewage branch pipe is arranged on the tank body above the filter material of each layer of the filter unit, and each sewage branch pipe is connected to the sewage main pipe.

2. The reclaimed water filtration device according to claim 1, characterized in that: The filter media of the three-layer filter unit are quartz sand filter media with a diameter of 3 to 6 mm, quartz sand filter media with a diameter of 1 to 2 mm, and activated carbon filter media with a diameter of 1 to 2 mm along the medium flow direction.

3. The reclaimed water filtration device according to claim 1, characterized in that: The inlet end of the sewage branch pipe is provided with a material retaining net.

4. The reclaimed water filtering device according to claim 1, characterized in that: The tray is tilted, and the horizontal angle between the tray and the tank body is 30°.

5. The reclaimed water filtering device according to claim 1, characterized in that: A sewage bottom pipe is arranged at the bottom of the tank body.

6. The reclaimed water filtering device according to claim 1, characterized in that: The pore size of the water outlet mesh is 1 / 2 of the filter material size.

7. The reclaimed water filtering device according to claim 1, characterized in that: The outer diameter of the water outlet mesh of each layer of filtration unit is 1 / 2 of the inner diameter of the tank; The mesh diameters of the outlet holes of the three-layer filter unit are 1.5 mm, 0.5 mm and 0.5 mm respectively along the flow direction of the medium.

8. The reclaimed water filtering device according to claim 1, characterized in that: The can body comprises a can body and a can top, the can top is mounted on the upper end of the can body through a fastener, and the tray is detachably mounted on the inner wall of the can body.

9. The reclaimed water filtering device according to claim 1, characterized in that: The total filling amount of filter material of the three-layer filter unit is 50% to 70% of the tank height.

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