Domestic sewage reusing equipment with deep treatment

Abstract

The utility model discloses a domestic sewage recycling equipment with depth processing, including the adjusting pool and the sewage treatment equipment of installing in the right side of adjusting pool, the inside of sewage treatment equipment is provided with nitrification liquid reflux pump, the right side of nitrification liquid reflux pump is provided with sludge external sending pump, to send the sludge after separation to the outside, the right side of sludge external sending pump is provided with clean water pump, to shift the clean water after processing to the outside, the right side of sewage treatment equipment is provided with water storage tank, the inside of water storage tank is provided with backwash external sending pump, the inside of adjusting pool is provided with raw water pump, the upside of water storage tank is provided with recycling water tank, the inside of recycling water tank is provided with agitator, through installing quartz sand filter and active carbon fiber filter, remove the suspended solids in domestic sewage, and COD, ammonia nitrogen, total nitrogen, total phosphorus, peculiar smell and so on pollutant enrichment, reduce effluent sewage material concentration, turbidity, chroma and so on index.

Description

Technical Field

[0001] This utility model belongs to the technical field of water resource recycling, specifically relating to a domestic sewage reuse device with advanced treatment capabilities. Background Technology

[0002] Advanced wastewater reuse equipment is a device designed to process domestic wastewater through a series of complex treatment processes, bringing it to a level suitable for reuse. With increasing water scarcity and growing environmental awareness, this type of equipment plays a vital role in achieving water recycling and alleviating water resource pressures.

[0003] However, when domestic sewage is recycled and treated, trace amounts of harmful substances in the sewage cannot be completely removed, and the reused water can lead to the accumulation of heavy metals in the soil. Utility Model Content

[0004] The purpose of this invention is to provide a domestic sewage reuse device with advanced treatment capabilities, in order to solve the problem mentioned in the background art that trace harmful substances in domestic sewage cannot be completely removed during the recycling and treatment of domestic sewage.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a domestic sewage reuse device with advanced treatment, comprising an equalization tank and sewage treatment equipment installed on the right side of the equalization tank;

[0006] The wastewater treatment equipment is equipped with a nitrification liquid return pump.

[0007] A sludge delivery pump is installed on the right side of the nitration return pump to transport the separated sludge to the outside.

[0008] A clean water pump is installed on the right side of the sludge delivery pump to transfer the treated clean water outward. A water storage tank is installed on the right side of the sewage treatment equipment. A backwash delivery pump is installed inside the water storage tank to transport the finished water outward. A raw water pump is installed inside the equalization tank to transport sewage to the sewage treatment equipment. A recycled water tank is installed on the upper side of the water storage tank. A stirrer is installed inside the recycled water tank.

[0009] A quartz sand filter is installed on the right side of the wastewater treatment equipment, and an activated carbon fiber filter is installed on the right side of the quartz sand filter.

[0010] Preferably, the interior of the quartz sand filter contains quartz sand particles.

[0011] Preferably, the activated carbon fiber filter is provided with primary activated carbon fiber inside, and secondary activated carbon fiber is provided below the primary activated carbon fiber.

[0012] Preferably, a tertiary activated carbon fiber is disposed on the lower side of the secondary activated carbon fiber, and the density of the primary, secondary and tertiary activated carbon fibers gradually decreases from top to bottom.

[0013] Preferably, the outer wall of the left end of the quartz sand filter is provided with a first water inlet to introduce the liquid delivered by the clean water pump into the quartz sand filter, and the outer wall of the right end of the quartz sand filter is fixedly connected with a guide pump to transfer the filtered liquid into the activated carbon fiber filter.

[0014] Preferably, a second water inlet is fixedly connected to the outer wall of the left end of the activated carbon fiber filter to guide the liquid from the guide pump into the interior of the activated carbon fiber filter, and a cleaning port is fixedly connected to the outer wall of the lower end of both the quartz sand filter and the activated carbon fiber filter.

[0015] Preferably, the outer wall of the right end of the quartz sand filter is provided with a return water port near the upper side, and the outer wall of the upper end of the activated carbon fiber filter is fixedly connected with a steam inlet.

[0016] Preferably, an aeration fan is provided on the upper outer wall of the wastewater treatment equipment, and a sludge conveying pump is provided on the upper side of the sludge delivery pump to transfer sludge to an external treatment unit.

[0017] Preferably, the wastewater treatment equipment is internally equipped with multiple bypass pipes to provide pathways for wastewater to flow to the next stage.

[0018] Compared with the prior art, this utility model provides a domestic sewage reuse device with advanced treatment capabilities, which has the following beneficial effects:

[0019] 1. By installing a quartz sand filter, the quartz sand particles inside the filter remove suspended solids from domestic sewage. In addition to large particles, quartz sand particles also have a certain removal capacity for colloids and small suspended solids. Because the surface of the quartz sand particles carries a certain charge, when sewage passes through, it will undergo electrostatic adsorption with colloids and small suspended solids. This adsorption causes colloids and small particles that are originally difficult to settle to adhere to the surface of the quartz sand, thereby separating them from the sewage.

[0020] 2. By installing activated carbon fiber filters, the primary, secondary, and tertiary activated carbon fibers inside can enrich pollutants such as COD, ammonia nitrogen, total nitrogen, total phosphorus, and odors that remain after passing through quartz sand filters, reducing the concentration, turbidity, color, and other indicators of the effluent wastewater, so that the treated wastewater can meet stricter discharge and reuse standards. Attached Figure Description

[0021] Figure 1This is a schematic diagram of a domestic sewage reuse device with advanced treatment according to the present invention.

[0022] Figure 2 This is a partial structural diagram of the recycled water tank area of ​​this utility model.

[0023] Figure 3 This is a partial structural schematic diagram of the frontal cross-section of the quartz sand filter area of ​​this utility model.

[0024] Figure 4 This is a partial structural schematic diagram of the activated carbon fiber filter area in front view.

[0025] In the diagram: 1. Equalization tank; 2. Raw water pump; 3. Wastewater treatment equipment; 4. Aeration blower; 5. Nitrification liquor return pump; 6. Sludge delivery pump; 7. Clean water pump; 8. Stepover pipe; 9. Sludge transfer pump; 10. Quartz sand filter; 11. Activated carbon fiber filter; 12. Backwash delivery pump; 13. Water storage tank; 14. Reclaimed water tank; 15. Agitator; 16. Quartz sand particles; 17. First inlet; 18. Return water inlet; 19. Pilot pump; 20. Second inlet; 21. Cleaning inlet; 22. Primary activated carbon fiber; 23. Secondary activated carbon fiber; 24. Tertiary activated carbon fiber; 25. Steam inlet. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This utility model provides, for example Figure 1-4 The illustrated domestic sewage reuse equipment with advanced treatment includes an equalization tank 1 and a sewage treatment device 3 installed on the right side of the equalization tank 1.

[0028] Wastewater treatment equipment 3 is equipped with a nitrification liquid return pump 5;

[0029] A sludge delivery pump 6 is installed on the right side of the nitrification liquid return pump 5 to transport the separated sludge to the outside.

[0030] A clean water pump 7 is installed to the right of the sludge delivery pump 6 to transfer treated clean water externally. A water storage tank 13 is installed to the right of the wastewater treatment equipment 3. A backwash delivery pump 12 is installed inside the water storage tank 13 to transport finished water externally. A raw water pump 2 is installed inside the equalization tank 1 to transport sewage to the wastewater treatment equipment 3. A recycled water tank 14 is installed on the upper side of the water storage tank 13. An agitator 15 is installed inside the recycled water tank 14. Domestic sewage from various workshops in the factory is collected through drainage pipes and aggregated into the equalization tank 1. The sewage undergoes water quality and quantity adjustment in the equalization tank 1. The raw water pump 2 transports the sewage in the equalization tank 1 to the wastewater treatment equipment 3. The sewage enters the wastewater treatment equipment. After preparation 3, the wastewater is treated using biochemical technology inside the equipment. The nitrification liquid return pump 5 returns the nitrification liquid from the aerobic zone to the anoxic zone to achieve denitrification. Microorganisms decompose the organic matter in the wastewater under aerobic and anoxic environments, removing pollutants such as chemical oxygen demand and ammonia nitrogen. The wastewater after biochemical treatment settles in the wastewater treatment equipment 3, separating the treated water from the sludge. The sludge transfer pump 6 transports the settled sludge out for further treatment. The clear water pump 7 transfers the upper clear water to the subsequent deep treatment unit. The treated and disinfected water flows into the storage tank 13 for storage. The backwash transfer pump 12 transports the finished water in the storage tank 13 to various water points inside the factory to realize the reuse of domestic sewage.

[0031] A quartz sand filter 10 is installed on the right side of the wastewater treatment equipment 3, and an activated carbon fiber filter 11 is installed on the right side of the quartz sand filter 10. The clean water coming out of the wastewater treatment equipment 3 enters the quartz sand filter 10, where suspended solids in the wastewater are intercepted by quartz sand particles 16, achieving preliminary purification and reducing the turbidity of the wastewater. The water treated by the quartz sand filter 10 enters the activated carbon fiber filter 11, where the activated carbon fiber adsorbs and enriches residual COD, ammonia nitrogen, total nitrogen, total phosphorus, and odor pollutants, further reducing the concentration of pollutants, turbidity, and color in the wastewater. The effluent from the activated carbon fiber filter 11 enters the recycled water tank 14, where sodium hypochlorite is added for disinfection. The agitator 15 stirs the water to ensure that the disinfectant and water are fully mixed, ensuring the disinfection effect.

[0032] like Figure 3 As shown, the interior of the quartz sand filter 10 contains quartz sand particles 16.

[0033] When domestic sewage, after biochemical and sedimentation treatment, flows into the quartz sand filter 10, suspended solids in the sewage, such as silt, colloids, algae, and some larger organic particles, are directly intercepted on the surface or in the pores of the quartz sand layer because their size is larger than the pores between the quartz sand particles 16. Large particles cannot pass through the filtration barrier formed by the quartz sand, thus separating them from the sewage and achieving the initial removal of suspended solids.

[0034] like Figure 4 As shown, the activated carbon fiber filter 11 is provided with primary activated carbon fiber 22 inside, secondary activated carbon fiber 23 is provided below the primary activated carbon fiber 22, and tertiary activated carbon fiber 24 is provided below the secondary activated carbon fiber 23. The density of the primary activated carbon fiber 22, secondary activated carbon fiber 23 and tertiary activated carbon fiber 24 gradually decreases from top to bottom.

[0035] Wastewater passes sequentially through primary activated carbon fiber 22, secondary activated carbon fiber 23, and tertiary activated carbon fiber 24. During this process, each stage of activated carbon fiber adsorbs pollutants in the wastewater according to its own adsorption characteristics. Primary activated carbon fiber 22 first adsorbs large molecular organic matter and larger particulate pollutants. Secondary activated carbon fiber 23 then adsorbs medium-sized molecular pollutants and some nitrogen and phosphorus substances. Tertiary activated carbon fiber 24 finally adsorbs small molecular organic matter, residual nitrogen and phosphorus substances, and odor substances. After three-stage adsorption treatment, the concentration of pollutants in the wastewater is significantly reduced, and the water quality is significantly improved. The treated water flows out from the bottom of the activated carbon fiber filter 11 and enters the recycled water tank 14.

[0036] like Figure 3 and Figure 4 As shown, a first water inlet 17 is provided on the outer wall of the left end of the quartz sand filter 10 to introduce the liquid delivered by the clean water pump 7 into the quartz sand filter 10. A guide pump 19 is fixedly connected to the outer wall of the right end of the quartz sand filter 10 to transfer the filtered liquid into the activated carbon fiber filter 11. A second water inlet 20 is fixedly connected to the outer wall of the left end of the activated carbon fiber filter 11 to guide the liquid from the guide pump 19 into the interior of the activated carbon fiber filter 11. Cleaning ports 21 are fixedly connected to the lower outer walls of both the quartz sand filter 10 and the activated carbon fiber filter 11.

[0037] The first inlet 17 ensures that the liquid flows evenly and stably into the quartz sand filter 10, making full contact with the quartz sand particles 16, thereby effectively utilizing the filtration function of the quartz sand filter 10. The filtered liquid flows from inside the quartz sand filter 10 to the right, where the pump 19 provides power to extract the filtered liquid from the quartz sand filter 10 and transfer it to the activated carbon fiber filter 11. The cleaning port 21, fixedly connected to the lower outer wall of the quartz sand filter 10, is used to discharge backwash liquid during backwashing and to periodically clean impurities accumulated inside the filter. During backwashing, recycled water enters the quartz sand filter 10 from the bottom, flushing off the suspended matter attached to the surface of the quartz sand particles 16. The resulting backwash liquid is discharged through the cleaning port 21 and returned to the equalization tank 1. The liquid enters the activated carbon fiber filter 11 from the second inlet 20 and flows sequentially through the primary activated carbon fiber 22, the secondary activated carbon fiber 23, and the tertiary activated carbon fiber 24. The cleaning port 21, which is fixedly connected to the lower outer wall of the activated carbon fiber filter 11, is used to discharge the regeneration liquid during the regeneration process of the activated carbon fiber and to periodically clean any impurities that may accumulate inside the filter.

[0038] like Figure 3 and Figure 4 As shown, a return water inlet 18 is provided on the right outer wall of the quartz sand filter 10 near the upper side, and a steam inlet 25 is fixedly connected to the upper outer wall of the activated carbon fiber filter 11.

[0039] When backwashing of the quartz sand filter 10 is required, recycled water enters the filter through the return water inlet 18. This helps the recycled water to flow evenly downwards after entering the filter, making full contact with the quartz sand layer, thereby more effectively washing away the suspended matter attached to the surface of the quartz sand particles 16. When the activated carbon fiber reaches saturation in adsorption of pollutants and needs to be regenerated, high-temperature steam enters the filter through the steam inlet 25. The high temperature of the steam can provide sufficient energy for the pollutants adsorbed on the surface of the activated carbon fiber, causing them to desorb from the microporous structure of the activated carbon fiber. The steam inlet 25 is located at the top, which facilitates the steam to pass evenly through each level of activated carbon fiber from top to bottom under the action of gravity and its own pressure, ensuring that each layer of activated carbon fiber can be fully regenerated and its adsorption capacity restored.

[0040] like Figure 1 As shown, an aeration fan 4 is installed on the upper outer wall of the sewage treatment equipment 3, and a sludge transfer pump 9 is installed on the upper side of the sludge transfer pump 6 to transfer sludge to the external treatment unit.

[0041] During the biochemical treatment stage, microorganisms need oxygen to decompose the organic matter in the wastewater, converting it into carbon dioxide, water, and the biomass of the microorganisms themselves. The aeration blower 4 blows air into the treatment equipment, dissolving oxygen in the wastewater and creating a suitable aerobic environment for the microorganisms. In the wastewater treatment equipment 3, after sedimentation and other treatments, a certain amount of sludge will accumulate at the bottom. The sludge transfer pump 6 provides suction to suck the sludge settled at the bottom into the pump body, and then transports it to a dedicated sludge treatment unit outside through the sludge transfer pump 9.

[0042] like Figure 1 As shown, the sewage treatment equipment 3 is equipped with multiple bypass pipes 8 to provide a path for sewage to flow to the next stage.

[0043] In the wastewater treatment process, different treatment units have different treatment levels and requirements for wastewater. The function of the bypass pipe 8 is to guide wastewater to be smoothly transferred from one treatment area or unit to the next treatment area according to the process requirements of wastewater treatment.

[0044] The implementation principle of this embodiment is as follows: Domestic sewage from various workshops in the factory is collected through drainage pipes and converged into equalization tank 1. The sewage undergoes water quality and quantity adjustment within equalization tank 1. Raw water pump 2 transports the sewage from equalization tank 1 to sewage treatment equipment 3. After entering sewage treatment equipment 3, the sewage undergoes biochemical treatment. Nitrification liquid return pump 5 returns the nitrified liquid from the aerobic zone to the anoxic zone to achieve denitrification. Microorganisms decompose organic matter in the sewage under aerobic and anoxic conditions, removing pollutants such as chemical oxygen demand (COD) and ammonia nitrogen. The biochemically treated sewage undergoes sedimentation within sewage treatment equipment 3, separating the treated clear water from the sludge. Sludge transfer pump 6 transports the settled sludge for further treatment. Clear water pump 7 transfers the upper layer of clear water to the subsequent deep treatment unit for further treatment and disinfection. Water flows into the storage tank 13 for storage. The backwash pump 12 delivers the finished water from the storage tank 13 to various water points inside the factory to realize the reuse of domestic sewage. The clean water from the sewage treatment equipment 3 enters the quartz sand filter 10. The suspended solids in the sewage are intercepted by the quartz sand particles 16, achieving preliminary purification and reducing the turbidity of the sewage. The water treated by the quartz sand filter 10 enters the activated carbon fiber filter 11. The activated carbon fiber adsorbs and enriches residual COD, ammonia nitrogen, total nitrogen, total phosphorus and odor pollutants, further reducing the concentration of pollutants, turbidity and color in the sewage. The effluent from the activated carbon fiber filter 11 enters the recycled water tank 14. Sodium hypochlorite is added to the recycled water tank 14 for disinfection. The stirrer 15 stirs to make the disinfectant and water fully mixed to ensure the disinfection effect.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A domestic sewage reuse device with advanced treatment, comprising an equalization tank (1) and a sewage treatment device (3) installed on the right side of the equalization tank (1); The wastewater treatment equipment (3) is equipped with a nitrification liquid return pump (5). A sludge delivery pump (6) is provided on the right side of the nitrification liquid return pump (5) to transport the separated sludge to the outside. A clean water pump (7) is provided on the right side of the sludge delivery pump (6) to transfer the treated clean water to the outside. A water storage tank (13) is provided on the right side of the sewage treatment equipment (3). A backwash delivery pump (12) is provided inside the water storage tank (13) to transport the finished water to the outside. A raw water pump (2) is provided inside the regulating tank (1) to transport sewage to the sewage treatment equipment (3). A recycled water tank (14) is provided on the upper side of the water storage tank (13). A stirrer (15) is provided inside the recycled water tank (14). Its features are: A quartz sand filter (10) is provided on the right side of the sewage treatment equipment (3), and an activated carbon fiber filter (11) is provided on the right side of the quartz sand filter (10).

2. The domestic sewage reuse equipment with advanced treatment according to claim 1, characterized in that: The interior of the quartz sand filter (10) is provided with quartz sand particles (16).

3. A domestic sewage reuse device with advanced treatment according to claim 1, characterized in that: The activated carbon fiber filter (11) is provided with a primary activated carbon fiber (22) inside, and a secondary activated carbon fiber (23) is provided on the lower side of the primary activated carbon fiber (22).

4. A domestic sewage reuse device with advanced treatment according to claim 3, characterized in that: The secondary activated carbon fiber (23) is provided with a tertiary activated carbon fiber (24) on its lower side, and the density of the primary activated carbon fiber (22), the secondary activated carbon fiber (23) and the tertiary activated carbon fiber (24) gradually decreases from top to bottom.

5. A domestic sewage reuse device with advanced treatment according to claim 1, characterized in that: The quartz sand filter (10) has a first water inlet (17) on the outer wall of its left end to introduce the liquid delivered by the water pump (7) into the quartz sand filter (10). The quartz sand filter (10) has a guide pump (19) fixedly connected to the outer wall of its right end to transfer the filtered liquid into the activated carbon fiber filter (11).

6. A domestic sewage reuse device with advanced treatment according to claim 1, characterized in that: The activated carbon fiber filter (11) has a second water inlet (20) fixedly connected to the outer wall of its left end to guide the liquid from the guide pump (19) into the interior of the activated carbon fiber filter (11). The quartz sand filter (10) and the activated carbon fiber filter (11) both have cleaning ports (21) fixedly connected to their lower outer walls.

7. A domestic sewage reuse device with advanced treatment according to claim 1, characterized in that: The quartz sand filter (10) has a return water inlet (18) near the upper side on the outer wall of the right end, and the activated carbon fiber filter (11) has a steam inlet (25) fixedly connected to the outer wall of the upper end.

8. A domestic sewage reuse device with advanced treatment according to claim 1, characterized in that: An aeration fan (4) is provided on the upper outer wall of the wastewater treatment equipment (3), and a sludge transfer pump (9) is provided on the upper side of the sludge transfer pump (6) to transfer sludge to an external treatment unit.

9. A domestic sewage reuse device with advanced treatment according to claim 1, characterized in that: The wastewater treatment equipment (3) is equipped with multiple bypass pipes (8) to provide a path for wastewater to flow to the next level.

Images