Rainwater resource modularized collecting and draining system for building full-interpenetration construction

Abstract

The utility model discloses a rainwater resource modularization collecting and draining system for building full interpenetration construction. The rainwater resource modularization collecting and draining system comprises a hydrophobic layer draining unit, a water-resisting layer draining unit, a rainwater conveying and draining unit and a water treatment and recycling unit. The drainage layer drainage unit and the water-resisting layer drainage unit located below the drainage layer drainage unit form a drainage module; in the same drainage module, the drainage layer drainage unit is communicated with the water-resisting layer drainage unit through the rainwater conveying and drainage unit, and the water-resisting layer drainage unit is communicated with the water treatment and recycling unit through the rainwater conveying and drainage unit. When the rainwater resource modularization collecting and draining system used for building full-insertion construction is applied, accumulated water of each drainage floor is intercepted and drained to a specific water falling opening according to the corresponding drainage unit, the water baffle of the water-resisting layer at the water falling opening cuts off the water flow, the water flow is drained to the water storage pool and flows into the drainage pipeline through the junction device, and therefore the rainwater resource modularization collecting and draining system is formed. And finally, converging to the same elevation position, performing centralized treatment by using a three-stage sedimentation tank, and performing cyclic utilization.

Description

Technical Field

[0001] The utility model belongs to the technical field of building drainage facilities, and in particular relates to a modular rainwater resource collection and drainage system for fully interlaced construction of buildings. Background Art

[0002] With the development of modern construction technology, improving construction efficiency has become a key goal for many developers and construction companies. Traditional construction processes typically follow a phased approach: "structural construction - renovation - mechanical and electrical installation." The main drawbacks of this approach are extended construction periods, increased project costs, and an inability to meet the demand for rapid commissioning. Consequently, a fully interspersed construction method has gradually gained widespread adoption. This involves carrying out interior renovations, mechanical and electrical equipment installation, and other operations before the main structure is completed, accelerating the construction process. However, this construction method presents numerous challenges in practical application, particularly with regard to stormwater management.

[0003] In a fully interspersed construction environment, the building's curtain wall is unenclosed or incompletely enclosed, allowing external rainwater to enter the floors through openings. These openings include elevator shafts, stairwells, and pre-existing structural openings. Rainwater infiltration not only impacts construction progress but can also damage completed components below, such as mechanical and electrical equipment, finished finishes, and wall plastering. Once the lower floors are in use, rainwater intrusion can lead to even more severe economic losses and construction delays. Therefore, effectively draining, collecting, and treating rainwater has become a pressing challenge in the fully interspersed construction process.

[0004] Traditional drainage methods usually rely on setting up water retaining platforms around elevator shafts and stairwells on building floors, and by blocking building openings, directing rainwater to balconies or other open-air areas, and then draining rainwater out of the building through the installation of temporary drainage pipes. This method has multiple drawbacks. First, the openings on each floor must be sealed, which not only increases the workload of construction and demolition, but also easily leads to incomplete sealing, resulting in rainwater leakage. Secondly, the drainage of rainwater usually relies on manual labor, which is inefficient. Especially in cases of heavy rainfall, manual guidance is prone to errors, increasing the risk of flooding on the construction site. In addition, blocking and drainage require a large amount of materials and manpower, are costly, and difficult to reuse. Utility Model Content

[0005] The purpose of the utility model is to provide a modular rainwater collection and drainage system for fully interlaced construction of buildings.

[0006] The technical solution of the utility model for solving the above-mentioned technical problems is as follows: a modular rainwater resource collection and drainage system for fully interlaced construction of buildings, comprising: a hydrophobic layer drainage unit, an aquiclude drainage unit, a rainwater delivery and drainage unit and a water treatment and reuse unit; the hydrophobic layer drainage unit and the aquiclude drainage unit located therebelow constitute a drainage module; within the same drainage module, the hydrophobic layer drainage unit is connected to the aquiclude drainage unit through the rainwater delivery and drainage unit, and the aquiclude drainage unit is connected to the water treatment and reuse unit through the rainwater delivery and drainage unit.

[0007] The utility model is a modular rainwater collection and drainage system for full-penetration construction of buildings as described above. Furthermore, the hydrophobic layer drainage unit is arranged in the floor drop-down area, and the hydrophobic layer drainage unit includes a water intercepting trough, a pedal, a water blocking platform, a drainage ditch and a downspout. The water intercepting trough is arranged on the inner side of the edge of the drop-down area, and the pedal is laid above the water intercepting trough; the downspout is arranged on the inner side of the water intercepting trough; one end of the drainage ditch is connected to the water intercepting trough, and the other end is connected to the downspout, and water blocking platforms are arranged around the downspout.

[0008] The utility model is as described above, the modular rainwater collection and drainage system for the fully interlaced construction of buildings, further, the aquiclude drainage unit is located below the hydrophobic layer drainage unit, the aquiclude drainage unit includes a water retaining plate, a support pipe, a keel, a water reservoir, a water retaining platform, a junction, a drainage pipe and a water diversion ditch; the water reservoir is located directly below the downspout, the water retaining platform is provided around the water reservoir, the water reservoir is connected with the water diversion ditch, the support pipe is installed on the inner side of the water retaining platform, the keel is welded to the upper end of the support pipe, and the water retaining plate is fixed above the keel; the junction is installed inside the water reservoir, and the junction is connected with the drainage pipe.

[0009] The utility model is a modular rainwater collection and drainage system for fully interlaced construction of buildings as described above. Further, the connector includes side walls, a base, and a drainage interface. A drainage interface is opened in the middle of the connector to connect with the drainage pipe, and the base is fixed under the side wall.

[0010] The utility model is a modular rainwater resource collection and drainage system for full-penetration construction of buildings as described above. Furthermore, the rainwater delivery unit includes a horizontal section delivery pipe and a vertical section delivery pipe; the horizontal section delivery pipe includes a horizontal PVC pipe, a clamp, a hanger and an expansion bolt; the horizontal PVC pipe is connected to the drainage pipe at the top, the clamp is fastened to the outside of the horizontal PVC pipe, the clamp is fixedly connected to the hanger, and the hanger is fixed to the upper floor slab through the expansion bolts.

[0011] The utility model is as described above, the modular rainwater collection and drainage system for full-penetration construction of buildings, further, the vertical section delivery pipeline includes a vertical PVC pipe, a U-shaped clip and a bolt; the U-shaped clip is fastened to the outside of the vertical PVC pipe, and the U-shaped clip is fixed to the outer wall by the bolt.

[0012] The utility model is as described above, the modular rainwater resource collection and drainage system for the fully interlaced construction of buildings, further, the water treatment and reuse unit includes a three-stage sedimentation tank, a water pump, and a water storage tank, the three-stage sedimentation tank is connected to the rainwater drainage unit, the water pump is installed at the end clean water tank of the three-stage sedimentation tank, and the water pump transports the treated clean water to the water storage tank.

[0013] The beneficial effects of this utility model are: by modularly intercepting, diverting, and centrally treating rainwater from floors, drainage efficiency is significantly improved, and by recycling treated rainwater, energy conservation and environmental protection are achieved. This modular system not only effectively solves rainwater infiltration and leakage problems, but also reduces material and labor consumption during construction, providing reliable technical support for fully interspersed construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or other advantages of the present invention will become clearer and easier to understand through the detailed description made in conjunction with the following drawings. These drawings are only illustrative and do not limit the present invention, wherein:

[0015] The figure is a schematic diagram of a modular rainwater collection and drainage system for full-interlaced construction of buildings according to an embodiment of the present invention;

[0016] Figure 1 This is a general schematic diagram of the modular rainwater collection and drainage system used for fully interspersed construction of buildings;

[0017] Figure 2 This is a top view of a hydrophobic layer drainage unit according to an embodiment of the present invention;

[0018] Figure 3 This is a structural diagram of a water-isolating layer drainage unit according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic structural diagram of a water reservoir according to an embodiment of the present utility model;

[0020] Figure 5 This is a structural diagram of a junction box according to an embodiment of the present invention;

[0021] Figure 6 This is a schematic structural diagram of a horizontal section conveying pipeline according to an embodiment of the present utility model;

[0022] Figure 7 This is a schematic structural diagram of a vertical section conveying pipeline according to an embodiment of the present invention; in the accompanying drawings, the components represented by the respective reference numerals are listed as follows:

[0023] 1. Drainage layer, 2. Water-blocking layer, 3. Drainage unit of the water-blocking layer, 31. Drop-down area, 32. Non-drop-down area, 33. Water intercepting trough, 34. Pedal, 35. Water blocking platform, 36. Drainage ditch, 37. Downspout, 4. Drainage unit of the water-blocking layer, 41. Water retaining plate, 42. Support pipe, 43. Keel, 44. Reservoir, 45. Water retaining platform, 46. Junction, 461. Side wall, 462. Base, 463. Drainage interface, 47. Drainage pipe, 48. Drainage ditch, 5. Horizontal section of the conveying pipeline, 51. Expansion bolt, 52. Hanging rod, 53. Hoop, 54. Horizontal PVC pipe, 6. Vertical section of the conveying pipeline, 61. Bolt, 62. U-shaped card, 63. Vertical PVC pipe, 7. Tertiary sedimentation tank, 71. Clear water tank, 8. Water pump, 9. Water storage tank. DETAILED DESCRIPTION

[0024] Hereinafter, an embodiment of a modular rainwater collection and drainage system for fully interlaced construction of buildings according to the present invention will be described with reference to the accompanying drawings.

[0025] The embodiments described herein are specific embodiments of the present invention and are used to illustrate the concept of the present invention. They are illustrative and exemplary and should not be construed as limiting the embodiments and scope of the present invention. In addition to the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the claims and the disclosure of the specification, including technical solutions that adopt any obvious substitutions and modifications to the embodiments described herein.

[0026] The accompanying drawings in this specification are schematic diagrams that assist in illustrating the concepts of the present invention and schematically illustrate the shapes of the various components and their interrelationships. Please note that to clearly illustrate the structures of the various components of the embodiments of the present invention, the drawings are not drawn to the same scale. The same reference numerals are used to indicate the same parts.

[0027] Combine Figures 1 to 7The present invention describes an embodiment of a modular rainwater collection and drainage system for fully interlaced construction of buildings, comprising: a hydrophobic layer drainage unit 3, an aquiclude drainage unit 4, a rainwater delivery and drainage unit, and a water treatment and reuse unit; the hydrophobic layer drainage unit 3 and the aquiclude drainage unit 4 located therebelow constitute a drainage module; within the same drainage module, the hydrophobic layer drainage unit 3 is connected to the aquiclude drainage unit 4 via the rainwater delivery and drainage unit, and the aquiclude drainage unit 4 is connected to the water treatment and reuse unit via the rainwater delivery and drainage unit. The hydrophobic layer drainage unit intercepts rainwater from the hydrophobic layer and diverts it to the aquiclude. After the rainwater is collected by the aquiclude drainage unit, it is introduced into the water treatment and reuse unit through the rainwater drainage unit for treatment and recycling.

[0028] Combine Figure 1 and Figure 2 In a specific embodiment of a modular rainwater collection and drainage system for fully interlaced construction of a building, the hydrophobic layer drainage unit 3 is arranged in the floor drop zone 31 (the floor surface in the floor drop zone is lower than the height specified in the floor elevation table). The hydrophobic layer drainage unit 3 includes a water intercepting trough 33, a pedal 34, a water blocking platform 35, a drainage ditch 36 and a water outlet 37. The water intercepting trough 33 is arranged on the inner side of the drop zone 31. Figure 2 In a preferred embodiment shown in the figure, the intercepting trough 33 is a square structure. Of course, the intercepting trough 33 can also be designed as other shapes such as a circle; a pedal 34 is laid above the intercepting trough 33, and the above-mentioned pedal can be made of wooden slats to facilitate construction workers to walk; a water outlet 37 is arranged on the inner side of the intercepting trough 33; one end of the drainage ditch 36 is connected to the intercepting trough 33, and the other end is connected to the water outlet 37, and the drainage ditch is used to guide the water flow in the intercepting trough to the water outlet; in order to prevent water from splashing everywhere, a water blocking platform 35 is provided around the water outlet 37.

[0029] Combine Figure 1 、 Figure 3 、 Figure 4 and Figure 5As shown, in a specific embodiment of a modular rainwater collection and drainage system for fully interlaced construction of buildings, the aquiclude drainage unit 4 is located below the hydrophobic layer drainage unit 3, and the aquiclude drainage unit 4 includes a water retaining plate 41, a support pipe 42, a keel 43, a water reservoir 44, a water retaining platform 45, a junction 46, a drainage pipe and a water diversion ditch; the water reservoir 44 is located directly below the downspout 37, and a water retaining platform 45 is provided around the water reservoir 44. The water reservoir 44 is connected to the water diversion ditch 48, and a support pipe 42 is installed on the inside of the water retaining platform 45. The upper end of the support pipe 42 is welded with a keel 43, and a water retaining plate 41 is fixed above the keel 43; the projection of the water retaining plate in the water reservoir is within the inner edge line of the water retaining platform. In a preferred embodiment, the distance between the outer edge of the projection of the water retaining plate in the water reservoir and the inner edge line of the water retaining platform is greater than or equal to 5 cm. In another preferred embodiment, the water baffle is arranged at an angle, that is, the height of one side of the water baffle is greater than the height of the other side opposite thereto. By setting the water baffle to be inclined at a certain angle (preferably greater than 5 degrees), water can be quickly dropped into the water reservoir; the junction box 46 is installed inside the water reservoir 44, and the junction box 46 is connected to the drain pipe 47. The junction box 46 includes a side wall 461 (preferably made of stainless steel plate), a base 462, and a drainage interface 463. A drainage interface 463 is provided in the middle of the junction box 46 to connect to the drain pipe 47, and the base 462 is fixed below the side wall 461. A drainage interface 463 is provided in the middle of the junction box 46 to connect to the drain pipe 47, and a rubber ring is provided at the joint position where the drain pipe is installed at the drainage interface 463 to prevent leakage. Alternatively, a sealant is used to seal and stop leaks at the position where the drain pipe is inserted into the drainage interface.

[0030] Combine Figure 1 、 Figure 6 and Figure 7 As shown, in a specific embodiment of a modular rainwater collection and drainage system for fully interlaced construction of a building, the rainwater delivery and drainage unit includes a horizontal section delivery pipe 5 and a vertical section delivery pipe 6; the horizontal section delivery pipe 5 includes a horizontal PVC pipe 54, a clamp 53, a hanger 52, and an expansion bolt 6151; the horizontal PVC pipe 54 is connected to the drainage pipe at the top, and a clamp 53 is fastened to the outside of the horizontal PVC pipe 54, and the clamp 53 is fixedly connected to the hanger 52, and the hanger 52 is fixed to the upper floor by an expansion bolt 6151. Preferably, the horizontal PVC pipe is arranged in an inclined manner, that is, one end of the horizontal PVC pipe and the vertical PVC pipe 63 are at a lower position, so that water can flow smoothly into the vertical PVC pipe 63 by gravity. The vertical section delivery pipe 6 includes a vertical PVC pipe 63, a U-shaped clip 62, and a bolt 61; the vertical PVC pipe 63 is fastened to the outside of the U-shaped clip 62, and the U-shaped clip 62 is fixed to the outer wall of the building by bolts 61.

[0031] Combine Figure 1As shown, in a specific embodiment of a modular rainwater collection and drainage system for fully interspersed construction of buildings, the water treatment and reuse unit includes a three-stage sedimentation tank 7, a water pump 8, and a water storage tank 9. The three-stage sedimentation tank 7 is connected to the rainwater drainage unit. The end clear water tank 71 of the three-stage sedimentation tank 7 is equipped with a water pump 8, and the water pump 8 transports the treated clear water to the water storage tank 9. In a specific embodiment, the three-stage sedimentation tank 7 includes a primary sedimentation tank, a secondary sedimentation tank and a clear water tank. The primary sedimentation tank is a primary treatment tank, and its main function is to intercept larger suspended matter and particulate matter. The sedimentation tank at this stage is designed to be larger, which can usually slow down the flow rate of rainwater and allow large particles in the water (such as mud, stones, branches, etc.) to settle to the bottom. 2. The function of the secondary sedimentation tank is to further remove smaller suspended matter and particulate matter. The treatment target at this stage is mud and particles with smaller particle size and lower density in rainwater. The secondary sedimentation tank is usually deeper and can effectively separate fine particles. The design features include:

[0032] The construction scheme of the modular rainwater collection and drainage system for full interlaced construction of buildings in this utility model is as follows:

[0033] Step S1, dividing the building drainage unit;

[0034] Step S1.1: Set up a vertical drainage module at every 25m to 30m height, and divide the bottom floor of each drainage module into an impermeable layer 2, and the remaining floors into a hydrophobic layer 1.

[0035] Step S1.2: every 400m 2 ~500m 2 A horizontal drainage unit is set up, and each drainage unit should contain a drop-down area and a structural reserved opening.

[0036] Step S2: Calculate the amount of water accumulated on each floor of the building based on local rainfall and various building parameters to determine the drainage pipe diameter for each floor;

[0037] Step S2.1: Determine the amount of water accumulated on the roof based on the local rainfall and the projected building area using the following formula:

[0038]

[0039] Among them, Q w is the maximum amount of water accumulated on the roof per hour, is the runoff coefficient, which is taken as 0.9, H is the hourly precipitation of the local maximum rainstorm within 5 years, and S is the projected area of ​​the building roof;

[0040] Step S2.2: According to the amount of water accumulated on the roof layer, the inner diameter of the horizontal section delivery pipe 5 of the roof rainwater drainage unit is determined by the following formula:

[0041]

[0042] Among them, d r v is the inner diameter of the horizontal section of the roof layer delivery pipeline 5, p is the water flow velocity of the junction, h1 is the height of the junction, g is the acceleration of gravity, and h2 is the depth of the reservoir.

[0043] In step S2.3, the amount of water accumulated on each floor is determined based on local rainfall, building facade, and external parameters as follows:

[0044]

[0045] tanα n =v / v n

[0046] Among them, Q n is the maximum amount of water accumulated per hour on the nth floor of the building, s n is the area of ​​direct contact between the curtain wall of the nth floor of the building and the outside world before it is closed, α n is the inclination angle between the rainwater falling at the nth level and the ground, v is the falling speed of the rainwater, and v n is the wind speed at the nth floor elevation.

[0047] Step S2.4, based on the amount of water accumulation on each floor, calculate the inner diameter of the horizontal section conveying pipe 5 of the waterproof layer rainwater drainage unit using the following formula.

[0048]

[0049] Among them, d m is the inner diameter of the pipe of the mth drainage module aquiclude, ∑Q m is the amount of water accumulated in the hydrophobic layer and aquiclude contained in the mth drainage module,

[0050] Step S2.5, calculating the inner diameter of the vertical section delivery pipeline 6 according to the total amount of water accumulated in the building.

[0051] In step S3, a water intercepting trough 33 is installed at the inner edge of the drop zone of the aquatic layer drainage unit 3. A footboard 34 is laid above the water intercepting trough 33 as a pedestrian walkway. A drainage ditch 36 is set up to connect the water intercepting trough 33 and direct the water flow to a water outlet 37. Water blocking platforms 35 are installed around the water outlet 37. A water reservoir 44 is installed in the aquatic layer drainage unit 4 directly below the water outlet 37. A support pipe 42 is installed above the water reservoir 44. A square tube 43 is welded to the upper end of the support pipe 42. A water retaining plate 41 is fixed above the keel to buffer and divert the water flow from above into the water reservoir 44. A junction 46 is installed inside the water reservoir 44, and the lower part of the junction 46 is connected to the drainage pipe 47.

[0052] In step S4, the horizontal and vertical sections of the delivery pipe 5 and 6 are installed. The horizontal PVC pipe 54 is secured with clamps 53 and fixed to the floor slab using hangers 52 and expansion bolts 51. The vertical PVC pipe is secured to the exterior wall using U-shaped clips 62 and bolts 61. The vertical section of the delivery pipe 6 is connected to the tertiary sedimentation tank 7 at an outdoor elevation. A water pump 8 is installed in the clear water tank 71 at the end of the tertiary sedimentation tank. The water pump 8 is connected to the water storage tank 9 via a pipeline.

[0053] In step S5, the accumulated water in each hydrophobic layer 1 is intercepted and drained to a specific downspout 37 according to the drainage unit to which it belongs. The aquiclude 2 is provided with a water baffle 41 at the downspout 37 to cut off the water flow and drain it to the reservoir 44. The water flows into the drainage pipe 47 through the junction 46, and finally converges to the same elevation position through the rainwater delivery unit for centralized treatment in the tertiary sedimentation tank 7. The treated clean water is stored in the water storage tank 9 and recycled for activities such as concrete maintenance, landscaping, and vehicle washing.

[0054] The technical features disclosed above are not limited to the disclosed combinations with other features. Those skilled in the art can also make other combinations between the technical features according to the purpose of the utility model to achieve the purpose of the utility model.

Claims

1. A modular rainwater collection and drainage system for fully interlaced construction of buildings, characterized by: include: A hydrophobic layer drainage unit (3), an aquiclude drainage unit (4), a rainwater delivery unit, and a water treatment and reuse unit; the hydrophobic layer drainage unit (3) and the aquiclude drainage unit (4) located therebelow constitute a drainage module; within the same drainage module, the hydrophobic layer drainage unit (3) is connected to the aquiclude drainage unit (4) via the rainwater delivery unit, and the aquiclude drainage unit (4) is connected to the water treatment and reuse unit via the rainwater delivery unit.

2. The modular rainwater collection and drainage system for full-interlaced construction of buildings according to claim 1 is characterized in that: The hydrophobic layer drainage unit (3) is arranged in the floor drop zone (31), and the hydrophobic layer drainage unit (3) comprises a water intercepting groove (33), a pedal (34), a water blocking platform (35), a drainage ditch (36) and a water outlet (37). The water intercepting groove (33) is arranged on the inner side of the edge of the drop zone (31), and the pedal (34) is laid above the water intercepting groove (33); the water outlet (37) is arranged on the inner side of the water intercepting groove (33); one end of the drainage ditch (36) is connected to the water intercepting groove (33), and the other end is connected to the water outlet (37); the water blocking platform (35) is arranged around the water outlet (37).

3. The modular rainwater collection and drainage system for fully interlaced construction of buildings according to claim 2 is characterized in that: The aquiclude drainage unit (4) is located below the hydrophobic layer drainage unit (3), and comprises a water retaining plate (41), a support pipe (42), a keel (43), a water reservoir (44), a water retaining platform (45), a junction (46), a drainage pipe, and a water diversion ditch; the water reservoir (44) is located directly below the water outlet (37), the water retaining platform (45) is provided around the water reservoir (44), the water reservoir (44) is connected to the water diversion ditch, the support pipe (42) is installed inside the water retaining platform (45), the keel (43) is welded to the upper end of the support pipe (42), and the water retaining plate (41) is fixed above the keel (43); the junction (46) is installed inside the water reservoir (44), and the junction (46) is connected to the drainage pipe.

4. The modular rainwater collection and drainage system for fully interlaced construction of buildings according to claim 3 is characterized in that: The junction box (46) comprises a side wall (461), a base (462), and a drainage interface (463). The drainage interface (463) is provided in the middle of the junction box (46) and is connected to the drainage pipe. The base (462) is fixed below the side wall (461).

5. The modular rainwater collection and drainage system for full-interlaced construction of buildings according to claim 3 or 4 is characterized in that: The rainwater delivery unit includes a horizontal section delivery pipe (5) and a vertical section delivery pipe (6); the horizontal section delivery pipe (5) includes a horizontal PVC pipe (54), a clamp (53), a suspension rod (52) and an expansion bolt (61) (51); the upper portion of the horizontal PVC pipe (54) is connected to the drainage pipe, the outer side of the horizontal PVC pipe (54) is fastened with the clamp (53), the clamp (53) is fixedly connected to the suspension rod (52), and the suspension rod (52) is fixed to the upper floor slab via the expansion bolt (61) (51).

6. The modular rainwater collection and drainage system for fully interlaced construction of buildings according to claim 5 is characterized in that: The vertical section delivery pipeline (6) comprises a vertical PVC pipe (63), a U-shaped clamp (62) and a bolt (61); the U-shaped clamp (62) is fastened to the outside of the vertical PVC pipe (63), and the U-shaped clamp (62) is fixed to the outer wall via the bolt (61).

7. The modular rainwater collection and drainage system for fully interlaced construction of buildings according to claim 6 is characterized in that: The water treatment and reuse unit comprises a three-stage sedimentation tank (7), a water pump (8), and a water storage tank (9); the three-stage sedimentation tank (7) is connected to the rainwater drainage unit; the terminal clear water tank (71) of the three-stage sedimentation tank (7) is equipped with the water pump (8); the water pump (8) transports the treated clear water to the water storage tank (9).

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