House building underground drainage device and construction technology thereof

Abstract

The invention relates to the technical field of civil engineering construction, and discloses a house building underground drainage device and a construction technology thereof, the house building underground drainage device comprises a sedimentation tank, a first conveying pipe is arranged at the input end of the sedimentation tank; the input ends of the multiple treatment ponds are connected with the output end of the sedimentation tank through a second conveying pipe, multiple limiting columns in the vertical direction are arranged in the treatment ponds, the peripheral sides of the limiting columns are movably sleeved with carrier frame assemblies, the carrier frame assemblies are used for attaching microorganisms to form biological membranes, and aeration devices are arranged in the treatment ponds. The aeration device is positioned below the carrier frame assembly and is used for providing oxygen for the microorganisms; the input end of the filter tank is connected with the output ends of the plurality of treatment tanks through a third conveying pipe, and the filter tank is used for treating suspended matters and microorganisms in the domestic sewage. In addition, the invention further discloses a construction technology of the house building underground drainage device. According to the invention, sewage generated in the house building construction process can be treated, and the sewage can be discharged after meeting the discharge standard.

Description

Technical Field

[0001] The invention relates to the technical field of civil construction, and in particular to an underground drainage device for building construction and a construction process thereof. Background Art

[0002] In building construction projects, the efficient operation of underground drainage systems is crucial. Wastewater generated by building construction mainly includes domestic sewage and construction wastewater. Domestic sewage mainly comes from the daily life of construction workers, including wastewater generated by activities such as bathing and washing. These sewage contain a large number of bacteria, viruses and parasite eggs. Construction wastewater mainly comes from the construction process, such as wastewater generated by concrete mixing, equipment washing, masonry and maintenance. These wastewaters contain a large amount of pollutants such as sediment, suspended matter, and oil.

[0003] The characteristics of building construction wastewater include unstable discharge, high pollutant concentration and difficulty in treatment. Due to different construction progress, the discharge of wastewater will fluctuate greatly. The concentration of pollutants such as suspended solids, chemicals, oil pollution, bacteria, etc. contained in the wastewater is high, which makes it difficult to treat. A variety of treatment processes and equipment are required for treatment.

[0004] In view of this, for those skilled in the art, designing an underground drainage device for building construction that can self-treat the wastewater generated by building construction has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] The present invention aims to provide an underground drainage device for building construction and a construction process thereof to overcome the above-mentioned shortcomings.

[0006] In order to achieve the above-mentioned object, the first aspect of the present invention provides a building underground drainage device and a construction process thereof, comprising:

[0007] A sedimentation tank, the input end of which is provided with a first delivery pipe, the first delivery pipe is used to deliver sewage into the sedimentation tank;

[0008] A plurality of treatment tanks are arranged in parallel, the input ends of the plurality of treatment tanks are connected to the output end of the sedimentation tank through a second delivery pipe, a plurality of limit columns are arranged in the treatment tank along the vertical direction, a carrier frame assembly is movably sleeved around the limit columns, the carrier frame assembly is used to attach microorganisms to form a biofilm, an aeration device is arranged in the treatment tank, the aeration device is located below the carrier frame assembly, and is used to provide oxygen to the microorganisms; and

[0009] The filter tank has an input end connected to the output ends of the plurality of treatment tanks through a third delivery pipe, and the filter tank is used to filter suspended matter and microorganisms in sewage.

[0010] Furthermore, the carrier frame assembly comprises:

[0011] A floating box movably sleeved around the limiting column and suspended in the treatment pool;

[0012] A plurality of connecting ropes suspended in the treatment pool and fixedly connected to the buoyancy tank at the upper ends, the plurality of connecting ropes being arranged at intervals along the circumference of the limiting column, and a plurality of carrier frames being arranged at intervals along the length direction of the connecting ropes, the carrier frames being used to attach microorganisms to form biofilms; and

[0013] A counterweight body connected to the lower ends of the plurality of connecting ropes, wherein the counterweight body is located on the upper surface of the bottom of the treatment pool.

[0014] Furthermore, the carrier frame comprises:

[0015] an annular sleeve connected to the connecting rope, wherein a side wall of the annular sleeve is provided with a plurality of through holes; and

[0016] The annular sleeve is filled with a composite filler.

[0017] Furthermore, the counterweight body is detachably connected to the lower end circumference of the limiting column;

[0018] The buoyancy box can simultaneously rotate in a single direction around the limiting column while rising or falling synchronously with the water level in the treatment pool.

[0019] Furthermore, the projection of the lower end of the limiting column in the vertical direction is a polygon, the counterweight body is annular, and the inner side wall of the counterweight body is matched with the lower end of the limiting column;

[0020] The floating box is fixedly connected with a plurality of sliding protrusions, and the upper side wall of the limiting column is provided with a plurality of spirally ascending sliding grooves, the sliding grooves penetrate the upper end of the limiting column, and the plurality of sliding protrusions are slidingly connected with the plurality of sliding grooves in a one-to-one corresponding manner.

[0021] Furthermore, the aeration device comprises:

[0022] a first aeration pipe sleeved on the periphery of the plurality of the limiting columns in a one-to-one correspondence, the first aeration pipe being connected to an aeration plate, and the aeration plate being located below the carrier frame; and

[0023] An air pump is located outside the treatment pool, and the air pump is connected to the first aeration pipe through a second aeration pipe, and a gas flow meter is arranged on the second aeration pipe.

[0024] Furthermore, the second delivery pipe comprises:

[0025] a first connecting pipe having one end connected to the output end of the sedimentation tank, one end of the first connecting pipe being located below the first delivery pipe, and a first sewage pump being arranged on the first connecting pipe,

[0026] a first connecting main pipe connected to the other end of the first connecting pipe, and

[0027] a second connecting pipe having one end connected to the input end of the treatment tank, the other end of the second connecting pipe being connected to the first connecting main pipe, and a first valve being installed on the second connecting pipe;

[0028] A first filter plate is installed on the inner wall of the sedimentation tank, the first filter plate is located between the first delivery pipe and the first connecting pipe, and the first filter plate is used to filter impurities in domestic sewage;

[0029] The third delivery pipe comprises:

[0030] A third connecting pipe having one end connected to the output end of the sedimentation tank, one end of the third connecting pipe being located below one end of the second connecting pipe, and a second valve being installed on the first connecting pipe.

[0031] a second connecting main pipe connected to the other end of the third connecting pipe, and

[0032] a fourth connecting pipe having one end connected to the input end of the treatment tank, the other end of the fourth connecting pipe being connected to the second connecting main pipe, and a second sewage pump being arranged on the fourth connecting pipe;

[0033] A fourth delivery pipe is provided at the output end of the filter tank, the fourth delivery pipe is located below one end of the fourth connecting pipe, and a third valve is provided on the fourth delivery pipe;

[0034] A second filter plate is installed on the inner wall of the filter tank. The second filter plate is located between the fourth connecting pipe and the fourth conveying pipe. The second filter plate is used to filter suspended matter and microorganisms.

[0035] Furthermore, an inverted cone-shaped sedimentation portion is provided at the lower end of the sedimentation tank, the sedimentation portion is connected to a sewage pipe, and a fourth valve is provided on the sewage pipe;

[0036] An ultraviolet lamp is installed on the inner side wall of the filter tank, and the ultraviolet lamp is located between the second filter plate and the fourth conveying pipe.

[0037] Compared with the prior art, the underground drainage device for building construction and the construction process thereof of the present invention have the following advantages:

[0038] The present invention can treat the sewage generated in the unit housing construction area with microorganisms and discharge it when it meets the discharge standards. Since it takes a long time for microorganisms to treat sewage, setting up multiple treatment pools can realize the sequential cycle treatment process, achieve the effect of continuous sewage treatment, and reduce the pressure of sewage treatment.

[0039] A second aspect of the present invention provides a construction process for an underground drainage device for building construction, comprising the following steps:

[0040] Step 1: Dig underground and construct an underground drainage treatment chamber. The internal net height of the underground drainage treatment chamber should be greater than twice the height of the treatment pool;

[0041] The second step is to arrange the sedimentation tank, the treatment tank and the filter tank in the underground treatment chamber, and respectively connect the first delivery pipe, the second delivery pipe and the third delivery pipe, and connect the first delivery pipe to the domestic sewage drainage pipe of the residents to collect the domestic sewage into the sedimentation tank;

[0042] The third step is to form a biofilm by hanging the carrier frame assembly, and hoist the carrier frame assembly into each treatment tank by hoisting, so as to ensure that the carrier frame assembly is located on the periphery of the limiting column;

[0043] The fourth step is trial operation, in which the domestic sewage is transported to the treatment tank after being treated in the sedimentation tank, ensuring that the sewage in each treatment tank submerges the carrier frame assembly.

[0044] Furthermore, the second step also includes:

[0045] A flocculation tank is arranged at the front end of the sedimentation tank (1), the input end of the flocculation tank is connected to the sewage drainage pipe, a coagulant is selectively added into the flocculation tank, and the output end of the flocculation tank is connected to the first delivery pipe;

[0046] The third step also includes:

[0047] Before the carrier frame assembly is hoisted into the treatment tank, an aeration device is installed on the inner bottom of the treatment tank around the limiting column;

[0048] The fourth step also includes:

[0049] When the sewage submerges the carrier frame assembly, the aeration device is turned on.

[0050] The construction process of the underground drainage device for building construction is the same as the advantages of the underground drainage device for building construction compared with the prior art, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0052] Figure 1 This is a schematic diagram of the structure of the underground drainage device for building construction of the present invention;

[0053] Figure 2 It is a structural schematic diagram of the underground drainage device for building construction of the present invention from another perspective;

[0054] Figure 3 It is a schematic diagram of assembling the carrier assembly and the aeration device of the present invention;

[0055] Figure 4 A schematic diagram of the structure of the invented carrier assembly;

[0056] Figure 5 It is a schematic structural diagram of the aeration device of the present invention.

[0057] Figure numerals: 1, sedimentation tank; 2, first delivery pipe; 3, treatment tank; 4, second delivery pipe; 5, carrier frame assembly; 6, aeration device; 7, filter tank; 8, third delivery pipe; 9, fourth delivery pipe; 10, third valve; 11, sewage pipe; 12, fourth valve; 13, first filter plate; 14, second filter plate; 15, ultraviolet lamp; 16, limit column; 17, sliding protrusion; 18, sliding groove; 19, hook; 401, first connecting pipe; 402, first sewage Water pump; 403, first connecting main pipe; 404, second connecting pipe; 405, first valve; 501, buoyancy box; 502, connecting rope; 503, annular sleeve; 504, through hole; 505, composite filler; 506, counterweight; 601, first aeration pipe; 602, aeration plate; 603, second aeration pipe; 604, air pump; 801, third connecting pipe; 802, second valve; 803, second connecting main pipe; 804, fourth connecting pipe; 805, second sewage pump. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0060] Reference Figure 1-3 The first aspect of the present invention provides an underground drainage device for building construction, which belongs to the underground facility engineering of building construction and can treat the wastewater generated during the construction of the building. The treated wastewater can be directly discharged after meeting the discharge standards.

[0061] The specific structure includes a sedimentation tank 1, a treatment tank 3, a filter tank 7 and a pipeline for conveying sewage. Among them, a first conveying pipe 2 is provided at the input end of the sedimentation tank 1, and the first conveying pipe 2 is used to input sewage. The first conveying pipe 2 is connected to the upper side wall of the sedimentation tank 1, and can convey sewage to the upper side of the sedimentation tank 1 and precipitate in the sedimentation tank 1. There are multiple treatment tanks 3, and usually three or more should be provided. Multiple treatment tanks 3 are arranged in parallel, and the input ends of multiple treatment tanks 3 are connected to the output end of the sedimentation tank 1 through a second conveying pipe 4. The sewage in the sedimentation tank 1 is selectively conveyed to the treatment tank 3. A plurality of limit columns 16 along the vertical direction are provided in the treatment tank 3, and a carrier frame assembly 5 is provided on the peripheral movable sleeve of the limit column 16. The carrier frame assembly 5 is used to attach microorganisms to form a biofilm. An aeration device 6 is provided in the treatment tank 3, and the aeration device 6 is located below the carrier frame assembly 5 to provide oxygen to the microorganisms. The setting of the limiting column 16 can limit the carrier frame assembly 5, so as to avoid displacement of the carrier frame assembly 5 during the flow of sewage in the treatment tank 3; the biofilm in the present invention adopts the inoculation biofilm method, by mixing mature activated sludge with treated water, and repeatedly performing aeration and water exchange treatment to form biofilm; the setting of the aeration device 6 can effectively improve the removal effect of microorganisms on COD, ammonia nitrogen, total nitrogen and total phosphorus. The input end of the filter tank 7 is connected to the output end of multiple treatment tanks 3 through the third delivery pipe 8. The filter tank 7 is used to filter suspended matter and microorganisms in the sewage, and then the sewage can be discharged after reaching the discharge standard.

[0062] It should be noted that the sedimentation tank 1, the treatment tank 3 and the filter tank 7 of the present invention are all provided with end covers (not shown in the figure) for shielding and sealing, and an exhaust port should be provided on the end cover of the treatment tank 3. In addition, the sedimentation tank 1, the treatment tank 3 and the filter tank 7 are all provided with water level sensors (not shown in the figure) for monitoring their water levels.

[0063] The present invention can treat the sewage generated in the unit housing area with microorganisms and discharge it when it meets the discharge standards. Since it takes a long time for microorganisms to treat sewage, setting up multiple treatment tanks 3 can realize the process of sequential cycle treatment, achieve the effect of continuous sewage treatment, and reduce the pressure of sewage treatment.

[0064] Reference Figure 3-5 The carrier frame assembly includes a buoyancy box 501, a connecting rope 502, a carrier frame and a counterweight body 506. The buoyancy box 501 adopts a hollow structure and can be made of stainless steel to form a hollow closed structure, and its density is less than the density of sewage. The buoyancy box 501 is movably mounted on the side of the limiting column 16 and suspended in the treatment pool 3; a plurality of connecting ropes 502 are provided, and the connecting ropes 502 are made of corrosion-resistant steel wire or fiber rope. The connecting ropes 502 are also suspended in the treatment pool 3. The upper ends of the connecting ropes 502 are fixedly connected to the buoyancy box 501. The plurality of connecting ropes 502 are spaced apart along the side of the limiting column 16, and a plurality of carrier frames are spaced apart along the length direction of the connecting ropes 502. The carrier frames are used to attach microorganisms to form biofilms. The density of the carrier frames is greater than the density of the sewage. The carrier frames are also in a suspended state under the action of the connecting ropes 502; the counterweight body 506 is connected to the lower ends of the plurality of connecting ropes 502. The density of the counterweight body 506 is greater than the density of the sewage. The counterweight body 506 is located on the upper surface of the bottom of the treatment pool 3. Through the structure of the float 501, the connecting rope 502 and the counterweight 506, the carrier frame can be suspended on the sewage surface, and the float 501 can change with the water level in the treatment pool 3, so that the carrier frame can be submerged in the water to avoid the death of microorganisms.

[0065] During the use of the treatment pool 3 of the present invention, it should be ensured that there is always a certain water level in the treatment pool 3 so that the carrier frame can be completely submerged in the water. On the one hand, the death of microorganisms can be avoided. On the other hand, when new sewage is added later, the adaptability of microorganisms in the water can be improved.

[0066] Specifically, the carrier frame includes an annular sleeve 503 and a composite filler 505. The annular sleeve is connected to the connecting rope 502 through a connecting ring, the annular sleeve 503 is a hollow structure, and the side wall of the annular sleeve 503 is provided with a plurality of through holes 504; the composite filler 505 is filled in the annular sleeve 503, and the composite filler 505 is aldehyded fiber and plastic sheet, and microorganisms can adhere to the surface of the annular sleeve 50, the aldehyded fiber and the plastic sheet.

[0067] Preferably, the counterweight body 506 is detachably connected to the lower end of the limiting column 16; the buoyancy box 501 can simultaneously rotate in a single direction around the limiting column 16 during the process of synchronously rising or falling with the water level in the treatment pool 3. Specifically, the projection of the lower end of the limiting column 16 in the vertical direction is a polygon, the counterweight body 506 is annular, and the inner side wall of the counterweight body 506 is adapted to the lower end of the limiting column 16; the buoyancy box 501 is fixedly connected with a plurality of sliding protrusions 17, and the upper side wall of the limiting column 16 is provided with a plurality of spirally climbing sliding grooves 18, which penetrate the upper end of the limiting column 16, and the plurality of sliding protrusions 17 are slidably connected with the plurality of sliding grooves 18 in a one-to-one correspondence.

[0068] After the sewage in the treatment pool 3 is biologically treated, the water in the treatment pool 3 is gradually transported to the filter pool 7 for filtration. At this time, the water level in the filter pool 7 will gradually decrease. After the lower end of the limit column 16 is connected to the counterweight body 506, the counterweight body 506 can be prevented from rotating under the action of the water flow. As the water level in the treatment pool 3 decreases, the float 501 can rotate in a single direction around the limit column 16, so that the connecting rope 502 is gradually wound around the limit column 16, thereby preventing the connecting rope 502 on the side of the adjacent limit columns 16 from being entangled under the impact of the water flow. On the contrary, when sewage is added to the filter pool 7 again, the water level therein gradually rises, and the float 501 rotates in the opposite direction around the limit column 16 and rises synchronously, and the connecting rope 502 on the side of the single limit column 16 is unwound.

[0069] It should be noted that in the present invention, a hook 19 is provided on the buoy 501, and the buoy 501, the connecting rope 502 and the counterweight 506 are placed in the treatment tank 3 by means of the lifting hook 19. During lifting, first, align the counterweight 506 with the lower end of the limiting column 16; then, gradually place the buoy 501, the connecting rope 502 and the counterweight 506 downward; finally, when the counterweight 506 contacts the lower end of the limiting column 16, the sliding protrusion 17 is inserted into the sliding groove 18. When the treatment tank 3 is full of sewage, the buoy 501 gradually floats up, and finally the connecting rope 502 is in a vertical state, and the carrier frame can be evenly arranged in the treatment tank 3 along the vertical direction, so that the biofilm is in full contact with the sewage.

[0070] Preferably, the aeration device 6 includes a first aeration tube 601, a second aeration tube 603 and an air pump 604. The first aeration tube 601 is annular, and a plurality of first aeration tubes 601 are sleeved one by one around the plurality of limit columns 16. The first aeration tube 601 is connected to an aeration plate 602, and the aeration plate 602 is located below the carrier frame; the air pump 604 is located outside the treatment tank 3, and the air pump 604 is connected to the first aeration tube 601 through the second aeration tube 603. A gas flow meter is provided on the second aeration tube 603 to monitor the gas flow of the second aeration tube 603.

[0071] Experiments show that by providing the aeration device 6, the turbulence of the water body can be increased, so that the microorganisms in the water can fully contact with the organic matter. At the same time, the dissolved oxygen concentration in the water is also increased, which is beneficial to the growth of nitrifying bacteria in the nitrification reaction and has a better COD removal effect.

[0072] It is understandable that the aeration device 6 in the treatment tank 3 adopts an intermittent aeration mode, and when aeration is stopped, the reaction of denitrifying bacteria can be enhanced, while when aeration is performed, the reaction of nitrifying bacteria can be enhanced.

[0073] In a specific embodiment of the present invention. The second delivery pipe 4 includes a first connecting pipe 401, a first sewage pump 402, a first connecting main pipe 403 and a second connecting pipe 404. One end of the first connecting pipe 401 is connected to the output end of the sedimentation tank 1, one end of the first connecting pipe 401 is connected to the middle of the side wall of the sedimentation tank 1, one end of the first connecting pipe 401 is located below the first delivery pipe 2, the first sewage pump 402 is provided on the first connecting pipe 401, the first connecting main pipe 403 is connected to the other end of the first connecting pipe 401, one end of the second connecting pipe 404 is connected to the input end of the treatment tank 3, the other end of the second connecting pipe 404 is connected to the first connecting main pipe 403, and the second connecting pipe 404 is installed with a first valve 405.

[0074] By starting the first sewage pump 402 and opening at least one of the first valves 405 , the sewage in the sedimentation tank 1 will enter the treatment tank 3 corresponding to the first valve 405 through the first connecting pipe 401 , the first connecting main pipe 403 and the second connecting pipe 404 in sequence.

[0075] The cycle of water treatment using microorganisms is relatively long, usually about 20-30 days. In the present invention, multiple treatment pools 3 are used in a sequentially cyclic manner. Sewage within a certain period is added to a treatment pool 3 for treatment, and the treated sewage within the next period is added to the next treatment pool 3 for treatment. After the treatment, it is discharged after passing through the filter pool 7. The above process is repeated to realize the treatment process.

[0076] Reference Figure 1 A first filter plate 13 is installed on the inner wall of the sedimentation tank 1. The first filter plate 13 is located between the first delivery pipe 2 and the first connecting pipe 401. The first filter plate 13 is used to filter impurities in the sewage. As time goes by, the upper surface of the first filter plate 13 should be cleaned regularly to avoid clogging of the first filter plate 13.

[0077] The third delivery pipe 8 includes a third connecting pipe 801, a second connecting main pipe 803, a fourth connecting pipe 804 and a second sewage pump 805. Among them, one end of the third connecting pipe 801 is connected to the output end of the sedimentation tank 1, one end of the third connecting pipe 801 is connected to the middle of the side wall of the treatment tank 3, the third connecting pipe 801 is provided with a second valve 802, the second connecting main pipe 803 is connected to the other end of the third connecting pipe 801, one end of the fourth connecting pipe 804 is connected to the input end of the treatment tank 3, one end of the fourth connecting pipe 804 is located above the side wall of the treatment tank 3, the other end of the fourth connecting pipe 804 is connected to the second connecting main pipe 803, and the fourth connecting pipe 804 is provided with a second sewage pump 805; the output end of the filter tank 7 is provided with a fourth delivery pipe 9, the fourth delivery pipe 9 is located below one end of the fourth connecting pipe 804, and the fourth delivery pipe 9 is provided with a third valve 10.

[0078] Refer again Figure 1 The inner wall of the filter pool 7 is provided with a second filter plate 14, which is located between the fourth connecting pipe 804 and the fourth delivery pipe 9. The second filter plate 14 is used for suspended matter and microorganisms. As time goes by, the upper surface of the second filter plate 14 should be cleaned regularly to avoid clogging of the second filter plate 14.

[0079] The sewage after treatment in the treatment tank 3 is discharged to the top of the second filter plate 14 through the third connecting pipe 801, the second connecting main pipe 803 and the first connecting pipe. The second filter plate 14 is used to filter fine suspended solids and microorganisms. An ultraviolet lamp 15 is installed on the inner wall of the filter tank 7. The ultraviolet lamp 15 is located between the second filter plate 14 and the fourth conveying pipe 9. The ultraviolet lamp 15 can emit ultraviolet rays after being powered on. The ultraviolet lamp 15 can kill pathogens in the sewage.

[0080] The lower end of the sedimentation tank 1 is provided with an inverted cone-shaped sedimentation part, which is connected to a sewage pipe 11, and a fourth valve 12 is provided on the sewage pipe 11. During the long-term sedimentation process, a large amount of sludge and other impurities will be deposited at the lower end of the sedimentation tank 1 and gathered in the sedimentation part. By opening the fourth valve 12, the impurities at the bottom of the sludge tank can be cleaned.

[0081] In the present invention, the first valve 405, the second valve 80, the third valve 10 and the fourth valve 12 can be electromagnetic valves, and a control unit electrically connected to the above valves is also provided in the present invention, and the control unit is a PLC device or a computer. In addition, the control unit can also be connected to the first sewage pump 402 and the second sewage pump 805 to realize the opening and closing process of the first sewage pump 402 and the second sewage pump 805. Similarly, the water level sensors in the sedimentation tank 1, the treatment tank 3 and the filter tank 7 can also be electrically connected to the control unit to read the water level information in the sedimentation tank 1, the treatment tank 3 and the filter tank 7.

[0082] The present invention provides a second aspect, which provides a construction process based on the above-mentioned underground drainage device for building construction, comprising the following steps:

[0083] Step 1: Dig underground and construct an underground drainage treatment chamber. The internal net height of the underground drainage treatment chamber should be greater than twice the height of the treatment pool 3;

[0084] The second step is to arrange the sedimentation tank 1, the treatment tank 3 and the filter tank 7 in the underground treatment room, and respectively connect the first delivery pipe 2, the second delivery pipe 4 and the third delivery pipe 8, and connect the first delivery pipe 2 with the sewage drainage pipe of the residents to collect the sewage into the sedimentation tank 1;

[0085] The third step is to form a biofilm by hanging the carrier frame assembly, and to hoist the carrier frame assembly 5 into the treatment pool 3 by hoisting;

[0086] The fourth step is trial operation, in which the sewage is transported to the treatment tank 3 after being treated in the sedimentation tank 1, and the sewage in each treatment tank 3 is ensured to submerge the carrier frame.

[0087] Preferably, the second step further comprises:

[0088] A flocculation tank (not shown) is arranged at the front end of the sedimentation tank 1, the input end of the flocculation tank is connected to the sewage drainage pipe, a coagulant is selectively added into the flocculation tank, and the output end of the flocculation tank is connected to the first delivery pipe;

[0089] The third step also includes: before the carrier frame assembly 5 is hoisted into the treatment tank 3, an aeration device 6 is installed on the inner bottom of the treatment tank 3 around the limiting column 16;

[0090] The fourth step also includes: starting the aeration device 6 after the sewage floods the carrier frame.

[0091] The process of treating construction wastewater generally includes the following steps:

[0092] Pretreatment: Remove large particles in the wastewater and adjust the water quality and quantity through facilities such as grids. If there are no large particles in the wastewater, this step can be skipped. In the present invention, a grid (not shown in the figure) can be set in the flocculation tank to achieve the pretreatment process.

[0093] Coagulation reaction: Adding coagulants into the flocculation tank causes the suspended matter in the wastewater to form larger flocs, which facilitates subsequent sedimentation.

[0094] Sedimentation: The wastewater with coagulant added in the flocculation tank is passed into the sedimentation tank, where the coagulated flocs are precipitated and the suspended matter in the wastewater is removed.

[0095] Biochemical treatment: The wastewater in the sedimentation tank is transported to the treatment tank, and the organic matter in the wastewater is decomposed into inorganic matter by the action of microorganisms, thereby reducing the degree of pollution of the wastewater.

[0096] Filtration: The suspended solids and impurities in the wastewater are further removed through the filtration tank. Ultraviolet disinfection and other methods are used to kill bacteria and viruses in the wastewater.

[0097] Discharge or reuse: If the treated wastewater meets the discharge standards, it can be discharged directly; if the water quality is good, it can also be reused for flushing, greening and other purposes during the construction process.

[0098] The construction process of the underground drainage device for building construction is the same as the advantages of the underground drainage device for building construction compared with the prior art, and will not be repeated here.

[0099] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0100] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A building underground drainage device, characterized in that: include: A sedimentation tank (1), wherein a first delivery pipe (2) is provided at an input end thereof, wherein the first delivery pipe (2) is used to deliver sewage into the sedimentation tank (1); A plurality of treatment tanks (3) are arranged in parallel, the input ends of the plurality of treatment tanks (3) are connected to the output end of the sedimentation tank (1) via a second delivery pipe (4), a plurality of vertical limit columns (16) are arranged in the treatment tank (3), a carrier frame assembly (5) is movably sleeved around the side of the limit column (16), the carrier frame assembly (5) is used to attach microorganisms to form a biofilm, an aeration device (6) is arranged in the treatment tank (3), the aeration device (6) is located below the carrier frame assembly (5) and is used to provide oxygen to the microorganisms; as well as A filter tank (7) has an input end connected to the output ends of the plurality of treatment tanks (3) via a third delivery pipe (8), and the filter tank (7) is used to filter suspended matter and microorganisms in sewage.

2. The underground drainage device for building construction according to claim 1, characterized in that: The carrier frame assembly (5) comprises: A floating box (501) movably sleeved around the limiting column (16) and suspended in the treatment pool (3); a plurality of connecting ropes (502) suspended in the treatment pool (3) and fixedly connected to the buoyancy tank (501) at their upper ends, the plurality of connecting ropes (502) being arranged at intervals along the circumference of the limiting column (16), and a plurality of carrier frames being arranged at intervals along the length direction of the connecting ropes (502), the carrier frames being used to attach microorganisms to form biofilms; and A counterweight body (506) connected to the lower ends of the plurality of connection ropes (502), wherein the counterweight body (506) is located on the upper surface of the bottom of the treatment pool (3).

3. The underground drainage device for building construction according to claim 2, characterized in that: The carrier frame comprises: an annular sleeve (503) connected to the connecting rope (502), wherein a side wall of the annular sleeve (503) is provided with a plurality of through holes (504); and A composite filler (505) is filled in the annular sleeve (503).

4. The underground drainage device for building construction according to claim 3, characterized in that: The counterweight body (506) is detachably connected to the lower end circumference of the limiting column (16); The buoyancy box (501) can simultaneously rotate in a single direction around the limiting column (16) while rising or falling synchronously with the water level in the treatment pool (3).

5. The underground drainage device for building construction according to claim 4, characterized in that: The projection of the lower end of the limiting column (16) in the vertical direction is a polygon, the counterweight body (506) is annular, and the inner side wall of the counterweight body (506) is adapted to the lower end of the limiting column (16); The floating box (501) is fixedly connected with a plurality of sliding protrusions (17), and the upper side wall of the limiting column (16) is provided with a plurality of spirally ascending sliding grooves (18), the sliding grooves (18) penetrate the upper end of the limiting column (16), and the plurality of sliding protrusions (17) are slidably connected with the plurality of sliding grooves (18) in a one-to-one corresponding manner.

6. The underground drainage device for building construction according to any one of claims 2 to 5, characterized in that: The aeration device (6) comprises: a first aeration tube (601) sleeved on the periphery of the plurality of the limiting columns (16) in a one-to-one correspondence, wherein the first aeration tube (601) is connected to an aeration plate (602), and the aeration plate (602) is located below the carrier frame; and An air pump (604) is located outside the treatment pool. The air pump (604) is connected to the first aeration pipe (601) through a second aeration pipe (603). A gas flow meter is provided on the second aeration pipe (603).

7. The underground drainage device for building construction according to claim 1, characterized in that: The second delivery pipe (4) comprises: a first connecting pipe (401) having one end connected to the output end of the sedimentation tank (1), one end of the first connecting pipe (401) being located below the first delivery pipe (2), and a first sewage pump (402) being provided on the first connecting pipe (401), a first connecting main pipe (403) connected to the other end of the first connecting pipe (401), and a second connecting pipe (404) having one end connected to the input end of the treatment pool (3), the other end of the second connecting pipe (404) being in communication with the first connecting main pipe (403), and a first valve (405) being installed on the second connecting pipe (404); A first filter plate (13) is installed on the inner wall of the sedimentation tank (1), the first filter plate (13) is located between the first delivery pipe (2) and the first connecting pipe (401), and the first filter plate (13) is used to filter impurities in domestic sewage; The third delivery pipe (8) comprises: a third connecting pipe (801) having one end connected to the output end of the sedimentation tank (1), one end of the third connecting pipe (801) being located below one end of the second connecting pipe (404), and a second valve (802) being installed on the first connecting pipe (401). a second connecting main pipe (803) connected to the other end of the third connecting pipe (801), and a fourth connecting pipe (804) having one end connected to the input end of the treatment pool (3), the other end of the fourth connecting pipe (804) being in communication with the second connecting main pipe (803), and a second sewage pump (805) being provided on the fourth connecting pipe (804); A fourth delivery pipe (9) is provided at the output end of the filter tank (7), the fourth delivery pipe (9) is located below one end of the fourth connecting pipe (804), and a third valve (10) is provided on the fourth delivery pipe (9); A second filter plate (14) is installed on the inner wall of the filter tank (7), and the second filter plate (14) is located between the fourth connecting pipe (804) and the fourth conveying pipe (9). The second filter plate (14) is used to filter suspended matter and microorganisms.

8. The underground drainage device for building construction according to claim 7, characterized in that: The lower end of the sedimentation tank (1) is provided with an inverted cone-shaped sedimentation portion, the sedimentation portion is connected to a sewage discharge pipe (11), and a fourth valve (12) is provided on the sewage discharge pipe (11); An ultraviolet lamp (15) is installed on the inner side wall of the filter pool (7), and the ultraviolet lamp (15) is located between the second filter plate (14) and the fourth delivery pipe (9).

9. A construction process for the underground drainage device for building construction according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: excavate underground and construct an underground drainage treatment chamber, the internal clear height of which should be greater than twice the height of the treatment pool (3); The second step is to arrange the sedimentation tank (1), the treatment tank (3) and the filter tank (7) in the underground treatment chamber, and respectively connect the first delivery pipe (2), the second delivery pipe (4) and the third delivery pipe (8), and connect the first delivery pipe (2) to the sewage drainage pipe to collect domestic sewage into the sedimentation tank (1); The third step is to form a biofilm by hanging the carrier frame assembly (5), and to hoist the carrier frame assembly (5) into each treatment tank (3) by hoisting, so as to ensure that the carrier frame assembly (5) is located on the peripheral side of the limiting column (16); The fourth step is trial operation, in which the domestic sewage is transported to the treatment tank (3) after being treated in the sedimentation tank (1), ensuring that the sewage in each treatment tank (3) submerges the carrier frame assembly (5).

10. The construction process according to claim 9, characterized in that: The second step also includes: A flocculation tank is arranged at the front end of the sedimentation tank (1), the input end of the flocculation tank is connected to the sewage drainage pipe, a coagulant is selectively added into the flocculation tank, and the output end of the flocculation tank is connected to the first delivery pipe; The third step also includes: Before the carrier frame assembly (5) is hoisted into the treatment tank (3), an aeration device (6) is installed on the inner bottom of the treatment tank (3) around the limiting column (16); The fourth step also includes: When the sewage submerges the carrier frame assembly (5), the aeration device (6) is turned on.

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