Reclaimed water treatment system

Abstract

The utility model discloses a reclaimed water treatment system which comprises a grating well, the right side of the grating well is communicated with a domestic sewage pipe, the left side of the grating well is provided with a water distribution well, the bottom of the water distribution well is communicated with the bottom of the grating well, and the bottom of the grating well is provided with a filtering grating for filtering sewage flowing into the water distribution well. The filter grating in the grating well effectively intercepts large-particle impurities in domestic sewage, prevents the impurities from entering subsequent treatment equipment and pipelines, avoids blockage, abrasion or faults, reduces damage to equipment such as a treatment pit, a sewage pump, a water distribution assembly and a water collection assembly, reduces maintenance and replacement frequency of the equipment, prolongs the service life of the equipment, and reduces the production cost. Therefore, the operation cost of the sewage treatment system is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of water treatment systems, and specifically relates to a greywater treatment system. Background Technology

[0002] With the increasing severity of water shortage, greywater treatment can transform wastewater into reusable water resources, realize the recycling of water resources, improve the efficiency of water resource utilization, and alleviate the contradiction between water supply and demand to a certain extent. After treatment, greywater that meets certain water quality standards can be reused, reducing the pollution of the environment caused by direct sewage discharge, reducing the damage to aquatic ecosystems, and helping to protect the water environment and ecological balance.

[0003] However, because the reclaimed water contains a lot of garbage, it will greatly increase the working pressure of the water pump in actual use, and may even cause the water pump to become blocked, thus greatly increasing the maintenance frequency of the equipment, and consequently greatly increasing the operating cost of the sewage treatment system. Utility Model Content

[0004] The purpose of this invention is to provide a greywater treatment system to solve the technical problems of easy clogging and high maintenance costs during greywater treatment.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A greywater treatment system includes a bar screen well, the right side of which is connected to a domestic sewage pipe, and a distribution well on the left side of which is connected to the bottom of the bar screen well. The bottom of the bar screen well is equipped with a filter screen for filtering sewage flowing into the distribution well. A treatment pit is located on one side of the bar screen well, with a water distribution component connected to the distribution well at its upper part, a treatment layer in the middle of the treatment pit, and a water collection component at its bottom. A disinfection dosing well is located on one side of the treatment pit, with the output end of the water collection component connected to the interior of the disinfection dosing well. A greywater tank is located on one side of the disinfection dosing well, with the inner cavity of the disinfection dosing well connected to the greywater tank. A miscellaneous water pump room is located on one side of the greywater tank, capable of pumping greywater from the tank to the outside. The other side of the greywater tank is connected to a greywater pipe.

[0007] As a further embodiment of this utility model, an overflow well is provided on one side of the bar screen well, a first overflow pipe is provided at the top of the bar screen well to connect to the overflow well, and a conduit connecting the overflow well to a municipal sewage well is provided on the other side of the overflow well.

[0008] As a further embodiment of this utility model, the treatment layer includes a geomembrane disposed inside the treatment pit, an aerobic layer disposed inside the treatment pit, an anaerobic layer disposed above the aerobic layer, a number of anaerobic trenches disposed inside the anaerobic layer, and a concrete layer disposed on top of the anaerobic layer.

[0009] As a further embodiment of this utility model, the water distribution assembly includes two sets of sewage pumps installed in the water distribution well, and the output ends of the two sets of sewage pumps are connected together through a bypass pipe.

[0010] One of the sewage pumps has a delivery pipe at its output end, and the other end of the delivery pipe extends to the upper part of the medium water tank. The end of the delivery pipe inside the medium water tank is connected to a horizontally arranged water distribution pipe. An inspection port is opened at the top of the water distribution pipe. Several sets of longitudinally arranged water distribution branch pipes are connected to one side of the water distribution pipe. The several sets of water distribution branch pipes are located inside each anaerobic ditch. The other end of each water distribution branch pipe is connected to a backwash pipe, and the other end of the backwash pipe penetrates upward through the concrete layer.

[0011] As a further embodiment of this utility model, the water collection component includes several sets of water collection branch pipes disposed at the bottom of the treatment pit, the ends of the several sets of water collection branch pipes are connected to a set of water collection pipes, one end of the water collection pipes is connected to the interior of the disinfection and dosing well, the top of the water collection pipes is connected to a vent pipe, and the end of the vent pipes penetrates upward through the concrete layer.

[0012] As a further embodiment of this utility model, the delivery end of another set of sewage pumps is connected to a second overflow pipe, and the other end of the second overflow pipe is connected to the interior of the overflow well.

[0013] Compared with existing technologies, the greywater treatment system of this invention has the following advantages:

[0014] 1. This system effectively intercepts large particulate impurities in domestic sewage through the filter screen in the bar screen well, preventing impurities from entering subsequent treatment equipment and pipelines, avoiding blockages, wear or malfunctions, reducing damage to equipment such as treatment pits, sewage pumps, water distribution components, and water collection components, reducing the frequency of equipment maintenance and replacement, extending the service life of equipment, and thus reducing the operating cost of the entire sewage treatment system.

[0015] 2. The system uses a first overflow pipe between the bar screen well and the overflow well, with its opening flush with the opening of the domestic sewage pipe. When the domestic sewage flow is large or there is a blockage in the bar screen well, excess sewage can be promptly overflowed into the overflow well and flow into the municipal sewage pipeline. At the same time, impurities in the bar screen well are discharged into the municipal sewage well through the first overflow pipe.

[0016] 3. In this system, the geomembrane prevents water leakage after treatment, protecting groundwater resources; the combination of aerobic and anaerobic layers utilizes the action of different types of microorganisms to more comprehensively and efficiently decompose organic matter in sewage and remove pollutants such as ammonia nitrogen, improving sewage treatment effect; the setting of anaerobic ditch increases the contact area and reaction time between sewage and microorganisms, further enhancing the anaerobic treatment effect; the concrete layer protects and fixes the treatment layer, ensuring the stability and service life of the treatment layer. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only examples of embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the processing layer in an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the aerobic ditch in an embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the vent pipe in an embodiment of this utility model;

[0022] Figure 5 This is a schematic diagram of the water collection component in an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the water distribution component in an embodiment of the present invention;

[0024] Figure 7 This is a cross-sectional view of the grid well and the water distribution well in an embodiment of this utility model;

[0025] Figure 8 This is a top view of the grid well and the water distribution well in an embodiment of this utility model;

[0026] Figure 9 This is a cross-sectional structural diagram of the water distribution well in an embodiment of this utility model.

[0027] Figure label:

[0028] 101. Treatment pit; 102. Anaerobic layer; 103. Aerobic layer; 104. Concrete layer; 105. Treatment layer; 106. Anaerobic ditch;

[0029] 12. Water distribution pipe; 121. Water distribution branch pipe; 122. Inspection port; 123. Backwash pipe;

[0030] 13. Water collection pipe; 131. Water collection branch pipe; 132. Vent pipe;

[0031] 2. Domestic sewage pipe; 21. First overflow pipe; 22. Overflow well; 23. Conduit; 24. Second overflow pipe;

[0032] 3. Greywater pipe;

[0033] 4. Grille well; 41. Filter grille; 42. First ladder;

[0034] 5. Water distribution well; 51. Second ladder; 52. Sewage pump; 53. Delivery pipe; 54. Bypass pipe;

[0035] 6. Disinfection and chemical dosing well; 7. Reclaimed water tank; 8. Miscellaneous water pump room; 9. Connecting pipes. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0037] In the description of the embodiments of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0038] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to the internal connection of two components; they can refer to a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0039] See appendix Figure 1-9 As shown, an embodiment of the present invention provides a greywater treatment system, including a bar screen well 4, a treatment pit 101 disposed on one side of the bar screen well 4, a disinfection and dosing well 6 located on one side of the treatment pit 101, and a greywater tank 7.

[0040] The right side of the bar screen well 4 is connected to the domestic sewage pipe 2, and the left side of the bar screen well 4 is provided with a water distribution well 5. The bottom of the water distribution well 5 is connected to the bottom of the bar screen well 4. The bottom of the bar screen well 4 is provided with a filter bar 41 to filter the sewage flowing into the water distribution well 5. The upper part of the treatment pit 101 is provided with a water distribution component connected to the water distribution well 5, the middle part of the treatment pit 101 is provided with a treatment layer 105, and the bottom of the treatment pit 101 is provided with a water collection component. The output end of the water collection component is connected to the interior of the disinfection dosing well 6. The inner cavity of the disinfection dosing well 6 is connected to the greywater tank 7. A miscellaneous water pump room 8 is provided on one side of the greywater tank 7. The miscellaneous water pump room 8 pumps the greywater in the greywater tank 7 to the outside. The other side of the greywater tank 7 is connected to the greywater pipe 3.

[0041] The filter screen 41 in the screen well 4 can effectively intercept large particulate impurities in domestic sewage, such as leaves, plastic pieces, and paper scraps, preventing impurities from entering subsequent treatment equipment and pipelines, avoiding blockage, wear or failure, reducing damage to equipment such as treatment pit 101, sewage pump 52, water distribution components, and water collection components, reducing the frequency of equipment maintenance and replacement, extending the service life of the equipment, and thus reducing the operating cost of the entire sewage treatment system.

[0042] One side of the middle water tank 7 is connected to a connecting pipe 9, and the other end of the connecting pipe 9 is connected to a rainwater inspection well.

[0043] An overflow well 22 is provided on one side of the grit well 4. A first overflow pipe 21 is provided on the upper part of the grit well 4 to connect the overflow well 22. A conduit 23 connecting the overflow well 22 to the municipal sewage well is provided on the other side of the overflow well 22. The opening of the first overflow pipe 21 between the grit well 4 and the overflow well 22 is flush with the opening of the domestic sewage pipe 2. When the domestic sewage flow is large or when there is a blockage in the grit well 4, the excess sewage can be overflowed into the overflow well 22 and flow into the municipal sewage pipe. At the same time, the impurities in the grit well 4 are discharged into the municipal sewage well through the first overflow pipe 21.

[0044] The interior of the grid well 4 is equipped with several sets of first ladders 42 from bottom to top, and the interior of the water distribution well 5 is equipped with several sets of second ladders 51 from bottom to top.

[0045] The treatment layer 105 includes a geomembrane disposed inside the treatment pit 101. An aerobic layer 103 is disposed inside the treatment pit 101, and an anaerobic layer 102 is disposed above the aerobic layer 103. Several sets of anaerobic ditches 106 are disposed inside the anaerobic layer 102. A concrete layer 104 is disposed on the top of the anaerobic layer 102. The geomembrane prevents the leakage of treated water and protects groundwater resources. The combination of the aerobic layer 103 and the anaerobic layer 102, by utilizing the action of different types of microorganisms, can more comprehensively and efficiently decompose organic matter in sewage and remove pollutants such as ammonia nitrogen, thereby improving the sewage treatment effect. The anaerobic ditches 106 increase the contact area and reaction time between sewage and microorganisms, further enhancing the anaerobic treatment effect. The concrete layer 104 protects and fixes the treatment layer 105, ensuring the stability and service life of the treatment layer 105.

[0046] The aerobic layer 103 may be composed of one or more of the genera *Bacillus* and *Bacillus*, while the anaerobic layer 102 may be composed of one or more of the genera *Methanogen* and *Acid-producing Bacteria*.

[0047] The water distribution assembly includes two sets of sewage pumps 52 installed in the water distribution well 5, and the output ends of the two sets of sewage pumps 52 are connected together through a bypass pipe 54.

[0048] One of the sewage pumps 52 has an output end connected to a conveying pipe 53. The other end of the conveying pipe 53 extends to the upper part of the medium water tank 7. The end of the conveying pipe 53 located inside the medium water tank 7 is connected to a horizontally arranged water distribution pipe 12. An inspection port 122 is opened at the top of the water distribution pipe 12. Several sets of longitudinally arranged water distribution branch pipes 121 are connected to one side of the water distribution pipe 12. The several sets of water distribution branch pipes 121 are located inside each anaerobic ditch 106. The other end of each water distribution branch pipe 121 is connected to a backwash pipe 123. The other end of the backwash pipe 123 penetrates upward through the concrete layer 104.

[0049] Another set of sewage pumps 52 has a conveying end connected to a second overflow pipe 24, and the other end of the second overflow pipe 24 is connected to the interior of the overflow well 22. The arrangement of the conveying pipe 53, the distribution pipe 12, and the distribution branch pipe 121 in the water distribution assembly can accurately deliver sewage to each anaerobic ditch 106 in the treatment pit 101, ensuring that the sewage is fully treated in the treatment layer 105. At the same time, the inspection port 122 facilitates the inspection and maintenance of the distribution pipe 12, and the backwash pipe 123 can periodically flush the distribution branch pipe 121 to prevent pipe blockage and ensure the normal operation of the water distribution system.

[0050] Anaerobic trench 106 is a trench formed on the surface of anaerobic layer 102.

[0051] The water collection assembly includes several sets of water collection branch pipes 131 installed at the bottom of the treatment pit 101. Each set of water collection branch pipes 131 is connected to a water collection pipe 13 at its end. One end of the water collection pipe 13 connects to the interior of the disinfection dosing well 6, and the top of the water collection pipe 13 is connected to a vent pipe 132. The end of the vent pipe 132 extends upwards through the concrete layer 104. The water collection assembly effectively collects the treated water at the bottom of the treatment pit 101 and transports it to the disinfection dosing well 6 via the water collection pipes 13. The vent pipe 132 ensures pressure balance within the water collection pipe 13, facilitating smooth water transport and preventing malfunctions in the water collection system due to pressure issues. This ensures that the treated water can reliably and stably enter the subsequent disinfection treatment stage.

[0052] Another set of sewage pumps 52 has a second overflow pipe 24 connected to its delivery end. The other end of the second overflow pipe 24 is connected to the inside of the overflow well 22. The second overflow pipe 24 can overflow the water in the distribution well 5 to the overflow well 22, thereby regulating the water level in the distribution well 5 and preventing the water level in the distribution well 5 from being too high.

[0053] When using this embodiment of the utility model, domestic sewage flows into the bar screen well 4 through the domestic sewage pipe 2. The filter bar 41 at the bottom of the bar screen well 4 performs preliminary filtration of the sewage, intercepting large particulate impurities and preventing them from entering the subsequent treatment process, so as to avoid clogging the pipe or damaging the equipment. The sewage that has undergone preliminary filtration flows into the water distribution well 5 from the bottom of the bar screen well 4.

[0054] The two sets of sewage pumps 52 in the distribution well 5 are started. The sewage pumps 52 transport sewage to the water distribution component of the treatment pit 101 through the delivery pipe 53. The water distribution pipe 12 and the water distribution branch pipe 121 in the water distribution component distribute the sewage evenly to each anaerobic ditch 106 in the treatment pit 101. When the sewage in the treatment pit 101 is full, the sewage overflows the water in the distribution well 5 to the overflow well 22 through the second overflow pipe 24 connected by the bypass pipe 54.

[0055] Wastewater first enters the anaerobic layer 102 in the anaerobic ditch 106. Anaerobic microorganisms in the anaerobic layer 102 decompose the organic matter in the wastewater under anaerobic conditions, converting complex organic matter into simple organic matter and biogas. When the wastewater reaches the aerobic layer 103, aerobic microorganisms in the aerobic layer 103 further decompose the organic matter under aerobic conditions, converting it into harmless substances such as carbon dioxide and water. At the same time, pollutants such as ammonia nitrogen in the wastewater are removed. The geomembrane is located at the bottom of the treatment pit 101 to prevent the treated water from seeping into the ground and to protect the groundwater environment.

[0056] The water collection branch pipe 131 in the water collection assembly collects the treated water and then flows the water to the disinfection and dosing well 6 through the water collection pipe 13. The vent pipe 132 at the top of the water collection pipe 13 is used to balance the air pressure inside and outside the water collection pipe 13 to ensure the smooth delivery of water.

[0057] In the disinfection and chemical dosing well 6, disinfectant is added to the collected treated water to disinfect it, kill residual bacteria, viruses, and other pathogens, and ensure that the effluent quality meets the sanitary standards for reclaimed water reuse. The disinfected reclaimed water flows into the reclaimed water tank 7 for storage. The miscellaneous water pump room 8 on one side of the reclaimed water tank 7 pumps the reclaimed water from the tank 7 to the outside for reuse, realizing the recycling of water resources. The reclaimed water pipe 3 connected to the other side of the tank 7 can transport the reclaimed water to other places that need it, further expanding the scope of reclaimed water reuse.

[0058] When the water level in the grit chamber 4 is too high, sewage can flow into the overflow well 22 through the first overflow pipe 21, and then be discharged to the municipal sewage well through the conduit 23, preventing sewage from overflowing from the grit chamber 4 and causing pollution to the surrounding environment.

[0059] In summary, in the wastewater treatment system of this utility model embodiment, the filter screen 41 in the screen well 4 effectively intercepts large particulate impurities in domestic sewage, preventing impurities from entering subsequent treatment equipment and pipelines, avoiding blockages, wear or malfunctions, reducing damage to equipment such as the treatment pit 101, sewage pump 52, water distribution components, and water collection components, reducing the frequency of equipment maintenance and replacement, extending the service life of the equipment, and thus reducing the operating cost of the entire sewage treatment system.

[0060] The above description illustrates the basic principles of the present invention. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The above embodiments and descriptions in the specification are only for illustrating the principles of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and scope of the present invention without departing from the scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A reclaimed water treatment system, characterized by The utility model relates to a sewage treatment device, which comprises: a grid well (4) having a right side connected to a domestic sewage pipe (2) and a left side provided with a distribution well (5) having a bottom connected to the bottom of the grid well (4), and the bottom of the grid well (4) is provided with a filter grid (41) for filtering sewage flowing into the distribution well (5); a treatment pit (101) provided on one side of the grid well (4), the upper part of the treatment pit (101) is provided with a distribution assembly connected to the distribution well (5), the middle part of the treatment pit (101) is provided with a treatment layer (105), and the bottom of the treatment pit (101) is provided with a water collecting assembly; a disinfection and dosing well (6) provided on one side of the treatment pit (101), and the output end of the water collecting assembly is connected to the inside of the disinfection and dosing well (6); a reclaimed water pool (7) provided on one side of the disinfection and dosing well (6), the inner cavity of the disinfection and dosing well (6) is connected to the reclaimed water pool (7), one side of the reclaimed water pool (7) is provided with a miscellaneous water pump room (8) capable of pumping the reclaimed water in the reclaimed water pool (7) to the outside, and the other side of the reclaimed water pool (7) is connected to a reclaimed water pipe (3).

2. The system of claim 1, wherein: One side of the grid well (4) is provided with an overflow well (22), the upper part of the grid well (4) is provided with a first overflow pipe (21) connected to the overflow well (22), and the other side of the overflow well (22) is connected to a guide pipe (23) connecting the overflow well (22) to a municipal sewage well.

3. The system of claim 2, wherein: The treatment layer (105) comprises a geomembrane provided in the treatment pit (101), the inside of the treatment pit (101) is provided with an aerobic layer (103), the upper part of the aerobic layer (103) is provided with an anaerobic layer (102), the inside of the anaerobic layer (102) is provided with a plurality of groups of anaerobic ditches (106), and the upper part of the anaerobic layer (102) is provided with a concrete layer (104).

4. The system of claim 3, wherein: The distribution assembly comprises two groups of sewage pumps (52) provided in the distribution well (5), and the output ends of the two groups of sewage pumps (52) are connected together through a bypass pipe (54); one output end of one group of the sewage pumps (52) is connected to a conveying pipe (53), the other end of the conveying pipe (53) extends to the upper part of the reclaimed water pool (7), the end of the conveying pipe (53) in the reclaimed water pool (7) is connected to a horizontally arranged distribution pipe (12), the top of the distribution pipe (12) is provided with an inspection port (122), one side of the distribution pipe (12) is connected to a plurality of groups of longitudinally arranged distribution branch pipes (121), the plurality of groups of distribution branch pipes (121) are respectively arranged in the inside of each group of anaerobic ditches (106), and the other ends of the distribution branch pipes (121) are all connected to backwashing pipes (123), and the other ends of the backwashing pipes (123) penetrate the concrete layer (104) upwards.

5. The system of claim 4, wherein: The water collecting assembly comprises a plurality of groups of water collecting branch pipes (131) arranged at the bottom of the treatment pit (101), the ends of the plurality of groups of water collecting branch pipes (131) being communicated with a group of water collecting pipes (13), one end of the water collecting pipes (13) being communicated with the inside of the disinfection and dosing well (6), the top of the water collecting pipes (13) being communicated with air permeable pipes (132), and the ends of the air permeable pipes (132) penetrating the concrete layer (104) upward.

6. The system of claim 5, wherein: The conveying end of the other group of sewage pumps (52) is communicated with a second overflow pipe (24), and the other end of the second overflow pipe (24) is communicated with the inside of the overflow well (22).

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