A water supply system for recycling recycled water for flushing toilets in subways
By designing a water supply system for recycled water return to the subway toilet flushing, and using MBR membrane pool to treat and recycle the wastewater from the subway station, the problems of waste of water resources and high-energy consumption drainage pumps in the existing technology are solved, and the recycling of water and energy-saving and environmentally friendly effects are achieved.
Patent Information
- Application Number
- CN202421422678.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-06-20
AI Technical Summary
In the prior art, wastewater treatment at subway stations requires drainage pumps with high energy consumption and high lift, which cannot achieve water recovery, resulting in serious waste of water resources. In the absence of a municipal pipeline network, long-distance discharge of wastewater increases construction risks and costs.
A water supply system for reclaimed water return to the subway toilet flushing is designed, including floor drains, drainage ditches, wastewater pools, adjustment pools, lifting pumps, MBR membrane pools, clean water pools, water supply pumps and stool and drowning equipment. The water pumps the water into the MBR membrane pool for treatment through the lifting pump. The treated water is stored in the clean water pool, and the stool and drowning equipment is supplied through the water pump to realize the recycling and recycling of water.
The subway station structure leakage or ground flushing wastewater is recovered, which reduces dependence on high-energy drainage pumps, saves water resources and energy, reduces construction risks and costs, and improves the quality of water supply and the reliability of the system.
Smart Images
Figure CN222745173U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of subway water supply and drainage engineering, in particular to a water supply system for recycling reclaimed water for flushing toilets in subways. Background Art
[0002] In order to clean up the leakage of subway station structure and the wastewater from ground washing, it is generally necessary to set up a wall ditch on the inner side of the structural wall, a track drainage ditch on the roadbed, and a wastewater pump room at the lowest point of the subway to collect wastewater and discharge it to the municipal pipe network. The wastewater pump room consists of a wastewater pump, a drainage pump and a pressure drainage pipeline.
[0003] The prior art has the following defects:
[0004] 1. To discharge a large amount of wastewater, a drainage pump with large flow, high energy consumption and large head is required. Water recovery cannot be achieved by drainage pump alone, resulting in serious waste of water resources.
[0005] 2. If there is no municipal pipeline network near the subway station, wastewater needs to be discharged over a long distance, which will occupy road planning space and land, increasing construction risks and costs. Utility Model Content
[0006] The utility model provides a water supply system for recycling recycled water for flushing toilets in subways, which is used to solve the problems existing in the prior art.
[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0008] A water supply system for recycling recycled water for flushing toilets in subways, comprising a floor drain, a drainage ditch, a wastewater tank, a regulating tank, a lifting pump, an MBR membrane tank, a clean water tank, a water supply pump and a toilet appliance; the floor drain is arranged at the platform level and the station hall level of the subway station, the drainage ditch is opened under the floor slab of the platform level of the subway station, and the drainage ditch is connected to the floor drain and the wastewater tank opened at the platform level; the regulating tank is arranged at one side of the wastewater tank, and the bottom layers of the regulating tank and the wastewater tank are connected; the pumping end of the lifting pump is arranged at the bottom of the regulating tank, and the first water inlet end of the MBR membrane tank is connected to the water outlet end of the lifting pump; the water inlet end of the clean water tank is connected to the water outlet end of the MBR membrane tank; the clean water tank is connected to the water inlet end of the toilet appliance through the water supply pump, and a pressure switch is arranged between the water supply pump and the water supply pipeline of the toilet appliance.
[0009] Through the above technical solution, after the floor drain collects the wastewater into the drainage ditch, the wastewater flows into the wastewater pool along the flow channel of the drainage ditch. The wastewater in the wastewater pool flows into the regulating tank after sedimentation. The water in the regulating tank is pumped into the MBR membrane tank by the lifting pump, and then flows into the clean water tank for storage after being treated by the MBR membrane tank. When the pressure switch is pressed, the water in the clean water tank is sent to the water inlet end of the defecation and urination equipment through the water supply pump. Compared with the prior art, the utility model system realizes the recovery of water seepage from the subway station structure or wastewater from ground washing. The pipeline design for conveying water occupies less space, and there is no need to use drainage pumps with excessive lift or high energy consumption, which can effectively reduce costs.
[0010] Preferably, it also includes an ultraviolet sterilizer, the water inlet end of the ultraviolet sterilizer is connected to the first water outlet end of the clean water tank, and the water outlet end of the ultraviolet sterilizer is connected to the water inlet end of the water pump.
[0011] Preferably, a backwash pump is further included, wherein the water inlet of the backwash pump is connected to the second water outlet of the clean water tank, and the water outlet of the backwash pump is connected to the second water inlet of the MBR membrane tank.
[0012] Preferably, a sludge pump is also included, and the sludge discharge end of the MBR membrane tank is connected to the wastewater tank through the sludge pump.
[0013] Preferably, a blower is further included, an aeration pipeline is arranged at the bottom of the MBR membrane pool, and an air outlet of the blower is connected to the aeration pipeline.
[0014] Preferably, the regulating tank is arranged on one side of the wastewater tank, a water hole is provided on the bottom layer of the partition wall, and a grille is provided on the side of the water hole close to the wastewater tank.
[0015] Preferably, the grille is detachably connected to the water hole.
[0016] Preferably, a liquid level detector is provided in the clean water tank, and the liquid level detector is electrically connected to the lifting pump.
[0017] Preferably, the water supply pump adopts a variable frequency water supply pump.
[0018] Preferably, the defecation and urination utensils include toilets and urinals.
[0019] The beneficial effects of the utility model are:
[0020] 1. Compared with the prior art, the system of the utility model realizes the recovery of water leakage from subway station structures or waste water from ground washing. The water delivery pipeline design occupies a small space and does not require drainage pumps with excessive lift or high energy consumption. It can effectively reduce costs, save water resources, and be energy-saving and environmentally friendly.
[0021] 2. Compared with the existing technology, the system of the utility model also disinfects the clean water with ultraviolet light to ensure the quality of the water supply.
[0022] 3. Compared with the prior art, a liquid level detector is installed in the clean water tank to send a stop signal to the lift pump when the water level in the clean water tank reaches the highest level, thereby reducing the possibility of water pipe rupture caused by excessive supply of wastewater.
[0023] 4. Compared with the existing technology, the clear water tank stores an appropriate amount of water, which improves the safety and reliability of the system's water supply. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a structural schematic diagram of a water supply system for recycling water for flushing toilets in subways in an embodiment of the utility model.
[0025] Description of reference numerals:
[0026] 1. Floor drain; 2. Drainage ditch; 3. Wastewater tank; 4. Lifting pump; 5. Equalization tank; 6. Sludge pump; 7. MBR membrane tank; 8. Blower; 9. Clean water tank; 10. Ultraviolet sterilizer; 11. Water supply pump; 12. Toilet; 13. Urinal; 14. Liquid level detector; 15. Backwash pump; 16. Pressure switch. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0028] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They 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 cannot be understood as limitations on the present invention.
[0029] This embodiment discloses a water supply system for recycling grey water for flushing toilets in subways, which is used to solve the problems existing in the prior art.
[0030] Reference Figure 1 A water supply system for recycling recycled water for flushing toilets in subways includes a floor drain 1, a drainage ditch 2, a wastewater tank 3, a lifting pump 4, a regulating tank 5, a sludge pump 6, an MBR membrane tank 7, a blower 8, a clean water tank 9, an ultraviolet sterilizer 10, a water supply pump 11, a toilet 12, a urinal 13, a liquid level detector 14, a backwash pump 15 and a pressure switch 16.
[0031] Among them, multiple floor drains 1 are respectively arranged at the corresponding subway platform layer and station hall layer, and multiple floor drains 1 are connected to the drainage ditch 2 arranged under the subway platform layer floor, and the outlet of the drainage ditch 2 is connected to the wastewater tank 3 opened on the bottom subway platform. The wastewater tank 3 and the regulating tank 5 are arranged adjacent to each other, and a partition wall is arranged between the wastewater tank 3 and the regulating tank 5. A water outlet is arranged at the bottom of the partition wall. The water outlet is spaced a certain distance from the bottom end of the partition wall. The side of the water outlet close to the wastewater tank 3 is detachably connected with a grille for filtering sludge. The pumping end of the lifting pump 4 is arranged at the bottom of the regulating tank 5, and the first water inlet end of the MBR membrane tank 7 is connected to the water outlet end of the lifting pump 4. The water inlet end of the clean water tank 9 is connected to the water outlet end of the MBR membrane tank 7. The clean water tank 9 is connected to the toilet 12 or the urinal 13 through the water supply pump 11 , and a pressure switch 16 is provided on the water supply pipeline of the water supply pump 11 . When the pressure switch 16 is pressed, the water supply pump 11 supplies water to the toilet 12 or the urinal 13 .
[0032] Through the above technical solution, the floor drain 1 collects wastewater into the drainage ditch 2, and the drainage ditch 2 collects wastewater into the wastewater pool 3. The wastewater in the wastewater pool 3 flows into the regulating pool 5 after sedimentation. The water in the regulating pool 5 is pumped into the MBR membrane pool 7 by the lifting pump 4, and then flows into the clean water pool 9 for storage after being treated by the MBR membrane pool 7. When the user presses the pressure switch 16, the water in the clean water pool 9 is sent to the water inlet end of the toilet 12 or the urinal 13 through the water supply pump 11. Compared with the prior art, the utility model system realizes the recovery of water seepage from the subway station structure or wastewater from ground flushing. The transmission pipeline design of the system occupies less space, and does not require the use of drainage pumps with excessive lift or energy consumption, which can effectively reduce costs.
[0033] In this embodiment, the water supply pump 11 adopts a variable frequency water supply pump, and its output power and pumping time can be adjusted according to actual conditions.
[0034] In order to improve the quality of the output water, in the present embodiment, the above-mentioned ultraviolet sterilizer 10 is arranged between the clean water tank 9 and the water supply pump 11, the water inlet end of the ultraviolet sterilizer 10 is connected to the first water outlet end of the clean water tank 9, and the water outlet end of the ultraviolet sterilizer 10 is connected to the water inlet end of the water supply pump 11.
[0035] In order to improve the water treatment effect of the MBR membrane pool 7, in this embodiment, a biological filler is placed on the top of the MBR membrane pool 7, an aeration pipeline is provided at the bottom of the MBR membrane pool 7, and the air outlet of the blower 8 is connected to the aeration pipeline.
[0036] In this embodiment, the MBR membrane pool 7 generates sludge during the water treatment process, and the sludge discharge end of the MBR membrane pool 7 is connected to the wastewater pool 3 through the sludge pump 6 to reduce the possibility that the MBR membrane pool 7 affects the water treatment effect due to sludge accumulation.
[0037] In this embodiment, the water inlet of the backwash pump 15 is connected to the second water outlet of the clean water tank 9, and the water outlet of the backwash pump 15 is connected to the second water inlet of the MBR membrane tank 7. The backwash pump 15 can be pre-set to start and stop at a scheduled time.
[0038] According to the above technical solution, when sludge is accumulated in the membrane assembly in the MBR membrane pool 7, the membrane assembly in the MBR membrane pool 7 can be regularly flushed by the backwashing pump 15 to maintain the purification capacity of the MBR membrane pool 7. In addition, the sewage after backwashing will flow back to the wastewater pool 3 through the sludge discharge end of the MBR membrane pool 7.
[0039] In this embodiment, a liquid level detector 14 is provided in the clean water tank 9, and the liquid level detector 14 is electrically connected to the lifting pump 4. When the water level in the clean water tank 9 reaches the highest, a stop signal is sent to the lifting pump 4 to reduce the possibility of water pipe rupture due to excessive supply of wastewater, thereby improving the safety of the system of the utility model.
[0040] The working principle of the embodiment of the utility model is:
[0041] After the floor drain 1 collects the wastewater into the drainage ditch 2, the wastewater flows into the wastewater pool 3 along the flow channel of the drainage ditch 2. The wastewater in the wastewater pool 3 flows into the regulating pool 5 after sedimentation. The water in the regulating pool 5 is pumped into the MBR membrane pool 7 by the lifting pump 4, and then flows into the clean water pool 9 for storage after being processed by the MBR membrane pool 7. When the pressure switch 16 is pressed, the water in the clean water pool 9 is sent to the water inlet end of the defecation and urination equipment through the water supply pump 11.
[0042] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.
Claims
1. A water supply system for recycling recycled water for flushing toilets in subways, characterized in that: The utility model comprises a floor drain (1), a drainage ditch (2), a wastewater pool (3), a regulating pool (5), a lifting pump (4), an MBR membrane pool (7), a clean water pool (9), a water supply pump (11) and a defecation and urination device; the floor drain (1) is arranged on the platform layer and the station hall layer of the subway station; the drainage ditch (2) is opened under the floor slab of the platform layer of the subway station; the drainage ditch (2) is connected to the floor drain (1) and the wastewater pool (3) opened on the platform layer; the regulating pool (5) is arranged on one side of the wastewater pool (3); the regulating pool (5) The bottom layer of the wastewater tank (3) is connected; the pumping end of the lifting pump (4) is arranged at the bottom of the regulating tank (5); the first water inlet end of the MBR membrane tank (7) is connected to the water outlet end of the lifting pump (4); the water inlet end of the clean water tank (9) is connected to the water outlet end of the MBR membrane tank (7); the clean water tank (9) is connected to the water inlet end of the defecation and urination equipment through the water supply pump (11); a pressure switch (16) is arranged between the water supply pump (11) and the water supply pipeline of the defecation and urination equipment.
2. The water supply system for recycling recycled water for flushing toilets in subways according to claim 1 is characterized in that: It also comprises an ultraviolet sterilizer (10), the water inlet end of the ultraviolet sterilizer (10) is connected to the first water outlet end of the clean water tank (9), and the water outlet end of the ultraviolet sterilizer (10) is connected to the water inlet end of the water supply pump (11).
3. The water supply system for recycling recycled water for flushing toilets in subways according to claim 1 is characterized in that: It also includes a backwash pump (15), the water inlet end of the backwash pump (15) is connected to the second water outlet end of the clean water tank (9), and the water outlet end of the backwash pump (15) is connected to the second water inlet end of the MBR membrane tank (7).
4. The water supply system for recycling recycled water for flushing toilets in subways according to claim 1 is characterized in that: It also comprises a sludge pump (6), and the sludge discharge end of the MBR membrane pool (7) is connected to the wastewater pool (3) through the sludge pump (6).
5. The water supply system for recycling recycled water for flushing toilets in subways according to claim 1 is characterized in that: It also comprises a blower (8), an aeration pipeline is arranged at the bottom of the MBR membrane pool (7), and an air outlet of the blower (8) is connected to the aeration pipeline.
6. The water supply system for recycling recycled water for flushing toilets in subways according to claim 1 is characterized in that: A partition wall is provided between the regulating tank (5) and the wastewater tank (3), a water hole is provided on the bottom layer of the partition wall, and a grille is provided on one side of the water hole close to the wastewater tank (3).
7. The water supply system for recycling recycled water for flushing toilets in subways according to claim 6 is characterized in that: The grille is detachably connected to the water hole.
8. The water supply system for recycling recycled water for flushing toilets in subways according to claim 1 is characterized in that: A liquid level detector (14) is provided in the clean water tank (9), and the liquid level detector (14) is electrically connected to the lift pump (4).
9. The water supply system for recycling recycled water for flushing toilets in subways according to claim 1, characterized in that: The water supply pump (11) is a variable frequency water supply pump.
10. The water supply system for recycling recycled water for flushing toilets in subways according to claim 1, characterized in that: The defecation and urination equipment comprises a toilet (12) and a urinal (13).