A combined permanent and temporary water resource utilization system for green buildings

Abstract

This invention discloses a combined permanent and temporary water resource utilization system for green buildings, comprising a rainwater well ring network pipeline. The rainwater well ring network pipeline includes a first ring network main pipe and a second ring network main pipe, which converge into a main pipe connected to the side wall of an intelligent diversion well. Multiple outlet pipes are also provided on the other side wall of the intelligent diversion well. Each outlet pipe includes a connecting pipe that extends into a three-stage sedimentation tank. The three-stage sedimentation tank is equipped with a first vertical partition wall and a second vertical partition wall. This invention, a combined permanent and temporary water resource utilization system for green buildings, utilizes intelligent diversion wells and a three-stage sedimentation tank to achieve water diversion based on water quality, prioritizing the use of high-quality water while effectively treating and reusing low-quality water. This effectively utilizes various water resources for construction and maintenance, site dust suppression, or subsequent greening irrigation, significantly improving the comprehensive utilization rate of water resources during both the construction and operation periods.

Description

Technical Field

[0001] This invention relates to the field of green building technology, and in particular to a combined permanent and temporary water resource utilization system for green buildings. Background Technology

[0002] Green building is a building that, throughout its entire life cycle, maximizes resource conservation (energy saving, land saving, water saving, and material saving), protects the environment and reduces pollution, provides people with healthy, suitable, and efficient living spaces, and coexists harmoniously with nature. Currently, in traditional building construction practices, the foundation pit dewatering (wellpoint dewatering) system is separate from the building's formal drainage and rainwater harvesting systems. Dewatering wells and drainage ditches built during the construction phase are backfilled or removed after the main structure is completed; while rainwater harvesting tanks and landscape ponds built after the building is handed over are excavated and constructed later, resulting in repeated construction, material waste, and occupation of underground space. Summary of the Invention

[0003] To address the problem of the disconnect between the existing foundation pit dewatering (wellpoint dewatering) system and the building's formal drainage and rainwater harvesting systems. The technical solution provided by this invention is as follows: A combined permanent and temporary water resource utilization system for green buildings, comprising a rainwater well ring network pipeline, wherein the rainwater well ring network pipeline includes a first ring network main pipe and a second ring network main pipe, the two pipes converge into a main pipe and the main pipe is connected to the side wall of an intelligent diversion well, and the other side wall of the intelligent diversion well is also provided with multiple water outlet pipes, wherein the water outlet pipes include connecting pipes, the connecting pipes pass through a three-stage sedimentation tank, and the three-stage sedimentation tank is provided with a first vertical partition wall and a second vertical partition wall.

[0004] Preferably, the intelligent diversion well is equipped with a guide plate at the inlet pipe of the corresponding dewatering well ring network pipeline, and the guide plate is equipped with a sensor and an online turbidity meter. The first ring network trunk pipe and the second ring network trunk pipe are made of HDPE double-wall corrugated pipe.

[0005] Preferably, the connecting pipes of the first and second ring main pipes are made of flexible waterproof sleeves. The water outlet pipes also include a second water outlet pipe and a third water outlet pipe. The connecting pipes are directly inserted into the side wall of the tertiary sedimentation tank. The third water outlet pipe is buried underground, with its pipe extending to the upper part of the side wall of the tertiary sedimentation tank and its end protruding out. The end of the third water outlet pipe is a flared mouth.

[0006] Preferably, the three-stage sedimentation tank is divided into three areas—a primary grit chamber, a secondary oil separator, and a tertiary clear water chamber—by a first vertical partition wall and a second vertical partition wall. The primary grit chamber is equipped with a double-grate rainwater inlet at the top and a sloping bottom at the bottom.

[0007] Preferably, the first vertical partition wall is provided with a water distribution hole, the secondary oil separator is provided with a vertical oil baffle plate, the position of the vertical oil baffle plate corresponds to the position of the water distribution hole, and the secondary oil separator is also provided with an online turbidity meter, the online turbidity meter is located inside the vertical oil baffle plate.

[0008] Preferably, a triangular overflow weir is provided on the second vertical partition wall, a water outlet pipe is provided on the wall of the third-stage clear water tank, and a submersible sewage pump is provided in the third-stage clear water tank.

[0009] Preferably, the top of the intelligent diversion well is provided with an overflow pipe, which is connected to the three-stage sedimentation tank. The top of the intelligent diversion well is also provided with an inspection hole and a ventilation pipe.

[0010] Preferably, the slope of the bottom of the slope is 5 degrees, and the diameter of the water distribution holes is 50mm-100mm, arranged in a quincunx pattern. The beneficial effects of the technical solution provided by this invention include: 1. Setting up intelligent diversion wells to achieve water diversion based on water quality, ensuring optimal use of high-quality water. By using online turbidity meters and pH meters to monitor the incoming water quality in real time, high-quality water (turbidity ≤ 5 NTU) is directly sent to recharge wells or construction / greening water points, avoiding resource waste and increased energy consumption caused by mixing high-quality and low-quality water and then treating it uniformly. Simultaneously, it achieves resource-based replenishment of foundation pit dewatering. High-quality foundation pit water is no longer directly discharged into the municipal pipe network, but is replenished to the underground aquifer through a combination of permanent and temporary recharge wells. This prevents ground subsidence caused by dewatering and maintains the regional groundwater level balance, truly achieving the environmental protection requirement of "closed dewatering."

[0011] 2. The three-stage sedimentation tank with a series structure ensures stable overall treatment effect, enabling the effective treatment and reuse of inferior water. Incoming water with excessive turbidity or abnormal pH is automatically introduced into the three-stage sedimentation tank, where it is converted into usable water after sand removal, oil separation, and sedimentation. This water can be used for construction maintenance, site dust suppression, or subsequent greening irrigation, thus significantly improving the comprehensive utilization rate of water resources during the construction and operation periods. Attached Figure Description

[0012] Figure 1 An overall schematic diagram is provided for embodiments of the present invention; Figure 2 This is a frontal view diagram provided for an embodiment of the present invention; Figure 3 This is a schematic diagram of a three-stage sedimentation tank provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the overall process of water resource utilization provided in an embodiment of the present invention.

[0013] In the diagram: 1. Rainwater well ring network pipeline; 2. Intelligent diversion well; 3. Three-stage sedimentation tank; 4. First ring network main pipe; 5. Second ring network main pipe; 6. Baffle plate; 7. Connecting pipe; 8. Online turbidity meter; 9. Vertical oil baffle plate; 10. Trumpet mouth; 11. Slope bottom; 12. Double grate rainwater inlet; 13. First vertical partition wall; 14. Triangular overflow weir. Detailed Implementation

[0014] A combined permanent and temporary water resource utilization system for green buildings includes a dewatering well ring network pipeline 1. The dewatering well ring network pipeline 1 includes a first ring network main pipe 4 and a second ring network main pipe 5. The two pipes converge into a main pipe, which is connected to the side wall of an intelligent diversion well 2. Multiple outlet pipes are also provided on the other side wall of the intelligent diversion well 2. Each outlet pipe includes a connecting pipe 7, and each connecting pipe 7 is independently equipped with an electric valve. The connecting pipe 7 passes through a tertiary sedimentation tank 3. The tertiary sedimentation tank 3 is equipped with a first vertical partition wall 13 and a second vertical partition wall. The tertiary sedimentation tank 3 is divided into a primary grit chamber, a secondary oil separator, and a tertiary sedimentation chamber. The clear water tank consists of three areas. The inlet of the primary sedimentation tank is equipped with a grating to intercept large debris. The bottom of the tank is sloped 11 with a slope of not less than 5 degrees. The lower part of the first vertical partition wall 13 between the primary and secondary tanks has water distribution holes with a diameter of 50mm-100mm, arranged in a quincunx pattern. Water flows into the secondary tank from the bottom. A vertical oil baffle is installed in the secondary oil separator adjacent to the water distribution holes. The upper edge of the oil baffle is higher than the design water level, and the lower edge extends below the water surface. An overflow oil collection trough is installed on the tank wall in front of the oil baffle to collect and discharge floating oil. The bottom of the secondary tank is also sloped to settle fine particles that have passed through the primary tank. An online turbidity meter is installed at the outlet of the pool, about 500mm below the water surface. The probe can be equipped with an automatic cleaning device. A triangular overflow weir is set at the top of the partition wall between the tertiary clear water pool and the secondary pool. Water overflows from the top of the weir into the tertiary pool. The tertiary pool only stores water with turbidity that meets the standards. A submersible sewage pump is installed in the pool to supply water to construction water points or the reinjection system. An ultraviolet sterilizer is installed on the top of the pool to disinfect the effluent.

[0015] In the intelligent diversion well 2, a guide plate 6 is installed at the inlet pipe of the corresponding dewatering well ring network pipeline 1. The guide plate 6 is used to prevent water flow from directly hitting the sensor. The sensor and online turbidity meter are installed at the guide plate 6. The first ring network main pipe 4 and the second ring network main pipe 5 are made of HDPE double-wall corrugated pipe. The predecessor of the intelligent diversion well 2 was a vertically arranged reinforced concrete cylinder well during the construction of the site. After the construction was completed, it was converted from temporary use to permanent use. The interior of the well can be divided into a sedimentation zone, an inlet flow stabilization zone, a detection zone, and an overflow zone from bottom to top. The sedimentation zone is used to settle large particles of silt. The guide plate 6 is installed in the inlet flow stabilization zone to reduce the water flow velocity, eliminate turbulence, and stabilize the water quality. The water flow is gentle in the detection zone, where a water quality sensor, pH meter, and online turbidity meter are installed. The overflow zone prevents the water from overflowing the well opening when the water level is too high, and at the same time leaves space for maintenance operations.

[0016] The connection between the first ring main pipe 4 and the second ring main pipe 5 is made of flexible waterproof sleeve. The water in the ring main pipe enters horizontally from the intelligent diversion well 2 (inlet flow stabilization zone) and then flows downward into the detection zone. After the sensor measurement is completed in the detection zone, different electric valves open the corresponding outlets according to the water quality results and flow out from the outlet pipe. The outlet pipe also includes a second outlet pipe and a third outlet pipe. The connecting pipe 7 directly penetrates the side wall of the tertiary sedimentation tank 3. The third outlet pipe is buried underground. Its pipe extends to the upper part of the side wall of the tertiary sedimentation tank 3 and its end protrudes out. The end of the third outlet pipe is a flared mouth 10 to avoid the water flow directly hitting the bottom of the tank and stirring up the sediment.

[0017] The outlets of the water outlet pipes are all located in the lower middle part of the side wall of the intelligent diversion well 2, higher than the sedimentation zone, to avoid sucking up the bottom sediment. There are three outlet pipes: the first pipe connects to the main pipe of the reinjection well or the direct water use point (construction maintenance / greening); the second pipe connects to the inlet of the first sedimentation tank of the three-stage sedimentation tank 3; and the third pipe (overflow / backup) connects to the first tank of the three-stage sedimentation tank or the municipal rainwater pipe network.

[0018] The three-stage sedimentation tank 3 is divided into three areas: a primary grit chamber, a secondary oil separator, and a tertiary clear water chamber by the first vertical partition wall 13 and the second vertical partition wall. The primary grit chamber is equipped with a double grate rainwater inlet 12 at the top and a sloping bottom 11 at the bottom.

[0019] A water distribution hole is provided on the first vertical partition wall 13. A vertical oil baffle 9 is provided in the secondary oil separator, and the position of the vertical oil baffle 9 corresponds to the position of the water distribution hole. An online turbidity meter 8 is also provided in the secondary oil separator. The probe of the turbidity meter 8 is installed in the middle water layer of the secondary tank. A protective cover and an automatic cleaning device (such as compressed air purging or ultrasonic cleaning) are provided in front of the probe to prevent the adhesion of silt. The online turbidity meter 8 is located inside the vertical oil baffle 9. A triangular overflow weir 14 is provided on the second vertical partition wall. A water outlet pipe is provided on the wall of the tertiary clear water tank. A submersible sewage pump is provided in the tertiary clear water tank.

[0020] The top of the intelligent diversion well 2 is equipped with an overflow pipe, which is connected to the three-stage sedimentation tank 3. The top of the intelligent diversion well 2 is also equipped with an inspection hole and a ventilation pipe.

[0021] This device is used from the start of construction. The groundwater from the foundation pit has low turbidity (usually ≤10 NTU) and contains only a small amount of silt. The groundwater from the foundation pit is discharged directly into the intelligent diversion well 2 through an independent ring-shaped trunk pipe (HDPE / ductile iron pipe material). Construction wastewater, due to its oil content, has a high pH value and turbidity. It flows through the drainage ditch to the double-grate rainwater inlet and then directly into the first stage of the three-stage sedimentation tank.

[0022] After the building is completed, only the internal equipment (sensors, valves, water pumps) is replaced and the water source is switched to transform it into a permanent rainwater collection and diversion facility. No demolition or reconstruction is required, avoiding secondary excavation, repeated pouring, and material waste. After the transformation, rainwater from the roof flows into the intelligent diversion well 2 through a ring network pipe. If the original rainwater well ring network main pipe is cut off after completion, the newly installed roof rainwater riser can be directly connected to the inlet of the intelligent diversion well. Water enters from the upper middle part of the side wall of the intelligent diversion well 2 (inlet flow stabilization zone), where it is de-energized and de-speeded by a guide plate to prevent direct impact on the sensors. Particles and sediment settle into the bottom sedimentation zone (regular sludge removal). The water then flows upward into the detection zone, where it is detected by an online turbidity meter 8 and a pH meter. Simultaneously, the PLC controller reads the data in real time and compares it with preset thresholds. When the turbidity is ≤5 NTU and the pH is between 6.5 and 8.5, the first electric valve (normally open) is opened, and the water enters the reinjection well or the direct water usage point. If the turbidity is between 5 and 30 NTU or the pH exceeds the standard, the second electric valve (normally closed) will be opened, and the water will enter the first stage of the three-stage sedimentation tank 3. After the water from the intelligent diversion well 2 enters through the side wall, large particles of silt will settle in the first stage sedimentation tank. The water will enter the second stage tank through the perforations at the bottom of the partition wall. The floating oil will be intercepted by the oil baffle and will accumulate on the water surface in front of the baffle. It will be discharged through the overflow oil collection tank (or manually cleaned). Fine suspended matter will continue to settle. An online turbidity meter is installed on the water surface to detect the water quality. Then, the clear water will overflow from the top of the second stage tank and enter the third stage tank from the triangular overflow weir 14 at the top of the partition wall. The water in the third stage tank can be pumped to the community greening irrigation, landscape pond replenishment, road washing, toilet flushing, etc.

[0023] Furthermore, when the incoming water volume is too large and the water level in the well rises to the top of the overflow weir, the water automatically overflows the stainless steel overflow weir and enters the top of the first-stage tank of the three-stage sedimentation tank 3 through the third pipeline. The double grate rainwater inlet 12 will backflow, thereby cleaning the dirt blocking the rainwater inlet. If the flow rate in the first-stage sedimentation tank is too fast, the liquid level sensor will be triggered, and the PLC will open the electric bypass valve to discharge the water directly into the municipal rainwater pipe network.

[0024] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A combined permanent and temporary water resource utilization system for green buildings, comprising a rainwater well ring network pipeline (1), characterized in that, The rainwater well ring network pipeline (1) includes a first ring network main pipe (4) and a second ring network main pipe (5). The two pipes converge into a main pipe and the main pipe is connected to the side wall of the intelligent diversion well (2). The other side wall of the intelligent diversion well (2) is also provided with multiple water outlet pipes. The water outlet pipes include connecting pipes (7). The connecting pipes (7) pass through the three-stage sedimentation tank (3). The three-stage sedimentation tank (3) is provided with a first vertical partition wall (13) and a second vertical partition wall.

2. A combined permanent and temporary water resource utilization system for green buildings according to claim 1, characterized in that: The intelligent diversion well (2) is equipped with a guide plate (6) at the inlet pipe of the corresponding dewatering well ring network pipeline (1). The guide plate (6) is equipped with a sensor and an online turbidity meter. The first ring network main pipe (4) and the second ring network main pipe (5) are made of HDPE double-wall corrugated pipe.

3. A combined permanent and temporary water resource utilization system for green buildings according to claim 2, characterized in that: The connecting pipes of the first ring main pipe (4) and the second ring main pipe (5) are made of flexible waterproof sleeves. The water outlet pipe also includes a second water outlet pipe and a third water outlet pipe. The connecting pipe (7) is directly inserted into the side wall of the three-stage sedimentation tank (3). The third water outlet pipe is buried underground. Its pipe extends to the upper part of the side wall of the three-stage sedimentation tank (3) and its end protrudes out. The end of the third water outlet pipe is a flared mouth (10).

4. A combined permanent and temporary water resource utilization system for green buildings according to claim 3, characterized in that: The three-stage sedimentation tank (3) is divided into three areas: a primary sedimentation tank, a secondary oil separator, and a tertiary clear water tank by a first vertical partition wall (13) and a second vertical partition wall. The primary sedimentation tank is provided with a double grate rainwater outlet (12) at the top and a sloping bottom (11) at the bottom.

5. A combined permanent and temporary water resource utilization system for green buildings according to claim 4, characterized in that: A water distribution hole is provided on the first vertical partition wall (13), and a vertical oil baffle (9) is provided in the secondary oil separator. The position of the vertical oil baffle (9) corresponds to the position of the water distribution hole. An online turbidity meter (8) is also provided in the secondary oil separator. The online turbidity meter (8) is located inside the vertical oil baffle (9).

6. A combined permanent and temporary water resource utilization system for green buildings according to claim 4, characterized in that: A triangular overflow weir (14) is provided on the second vertical partition wall, a water outlet pipe is provided on the wall of the third-stage clear water pool, and a submersible sewage pump is provided in the third-stage clear water pool.

7. A combined permanent and temporary water resource utilization system for green buildings according to claim 2, characterized in that: The intelligent diversion well (2) is equipped with an overflow pipe at the top, which is connected to the three-stage sedimentation tank (3). The intelligent diversion well (2) is also equipped with an inspection hole and a ventilation pipe at the top.

8. A combined permanent and temporary water resource utilization system for green buildings according to claim 5, characterized in that: The slope of the bottom of the slope (11) is 5 degrees, and the diameter of the water distribution hole is 50mm-100mm, arranged in a plum blossom shape.

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