Cubicle sewage treatment machine

Abstract

The utility model discloses a box type sewage treatment machine, including the case, be equipped with dosing area, aeration zone, stationary zone and filter area in the case, be equipped with aeration jet pump in aeration zone, aeration jet pump is connected with aeration jet nozzle, still be equipped with the aeration pipe device of parallel to aeration jet nozzle in aeration zone, be equipped with filter filler in stationary zone, be equipped with fibre membrane subassembly and spacing fixing device in filter area, the outside cover of water flow control device has the protective cover of buckling, aeration pipe device can form the aeration of many points, help to improve aeration effect, each aeration pipe device can be controlled individually, aeration pipe device and fibre membrane subassembly can be removed and move to the outside of case, make the operation of overhauling more convenient and realize no shutdown overhauling, can realize normal drainage and the control of backflushing to fibre membrane subassembly through water flow control device, function switching is simple, help to guarantee the quality of water treatment.

Description

Technical Field

[0001] This utility model relates to the technical field of wastewater treatment equipment, and in particular to a box-type wastewater treatment machine. Background Technology

[0002] To ensure the safe discharge of wastewater during production, enterprises currently have two main treatment methods. One is to cooperate with sewage treatment plants, pay them a certain wastewater treatment fee, and have the sewage treatment plants treat the wastewater and then safely discharge it. This method has the problem of high wastewater treatment costs. The other method is for enterprises to equip themselves with corresponding wastewater treatment facilities, purify the wastewater themselves, and then reuse or safely discharge it. Among these methods, membrane sewage treatment equipment is one of the commonly used wastewater treatment equipment for enterprises.

[0003] With the continuous development of wastewater treatment technology, box-type wastewater treatment equipment has been developed and put into use, offering advantages such as small size, high integration, and ease of relocation. Box-type wastewater treatment equipment is equipped with aeration facilities, separation membranes, and other facilities, all fixedly mounted inside the box. When these components malfunction and require repair, the machine must be shut down and the wastewater drained from the box. Maintenance personnel must then enter the box to perform repairs, resulting in inconvenience, long downtime, and a poor maintenance environment. Furthermore, to maintain continuous wastewater treatment, auxiliary units are required, which is detrimental to reducing wastewater treatment costs. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a box-type sewage treatment machine that can keep the equipment running without significantly increasing costs and is easy to inspect, maintain and operate.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a box-type sewage treatment machine, including a casing, wherein a dosing zone, an aeration zone, a settling zone and a filtration zone are sequentially and spaced apart along the sewage flow direction inside the casing, and adjacent zones are connected. An aeration jet pump is provided in the aeration zone, and the aeration jet pump is connected to an aeration jet nozzle through a pipeline. An aeration pipe device is also provided in the aeration zone, and each of the aeration pipe devices is detachable and connected in parallel to the water and air output end of the aeration jet nozzle. The settling zone is filled with filter media. A fiber membrane assembly is placed in the filtration zone, and a limiting and fixing device is provided between the upper and lower ends of the fiber membrane assembly and the casing. A water flow control device is connected to the fiber membrane assembly and is fixed to the outer wall of the casing corresponding to the filtration zone. A protective cover fixedly connected to the casing is fastened to the outer side of the water flow control device.

[0006] As a preferred technical solution, the water and air output end of the aeration jet nozzle is sealed and connected to a water and air distribution pipe, and an installation pipe seat is fixedly connected to each of the aeration pipe devices on the water and air distribution pipe, and an aeration control valve is provided on the installation pipe seat.

[0007] As a preferred technical solution, the aeration pipe device includes an aeration riser, the top end of which is detachably connected to the mounting pipe seat via a flange, and aeration layer pipes are arranged and connected from top to bottom on the aeration riser, with at least two aeration arc pipes respectively provided on each of the aeration layer pipes.

[0008] As a preferred technical solution, the spraying directions of adjacent aeration arc pipes on the same aeration riser are arranged in opposite directions.

[0009] As a preferred technical solution, the aeration arc pipes on two adjacent aeration risers are arranged alternately.

[0010] As a preferred technical solution, the fiber membrane assembly includes a rectangular frame-shaped fiber membrane tube frame formed by metal tubes. Several parallel curtain-type hollow fiber membranes are arranged and connected in the fiber membrane tube frame. A water pipe seat is installed and connected on the side of the fiber membrane tube frame near the protective cover. A connecting pipe seat is installed on the water pipe seat, which is sealed and fixedly installed through the casing. The connecting pipe seat is connected to the water flow control device.

[0011] As a preferred technical solution, the water flow control device includes a main water outlet pipe detachably connected to the connecting pipe seat and a secondary water outlet pipe detachably connected to the chassis. A water outlet branch pipe connects the main water outlet pipe and the secondary water outlet pipe. A first control water valve and a second control water valve are connected in series on the main water outlet pipe, a third control water valve is connected in series on the secondary water outlet pipe, and a fourth control water valve is connected in series on the water outlet branch pipe. A water outlet pump is also installed on the secondary water outlet pipe. The connection point between the water outlet branch pipe and the secondary water outlet pipe is located between the third control water valve and the water outlet pump. The water outlet end of the water outlet pump is connected to the main water outlet pipe, and the connection point is located between the first control water valve and the second control water valve.

[0012] As a preferred technical solution, the limiting and fixing device includes a bottom limiting cover fixedly installed on the bottom wall of the chassis corresponding to the filtration area, a top limiting cover opposite to the bottom limiting cover, and the top limiting cover has at least two sides that are detachably connected to the chassis, and the other two sides form airflow channels between the top limiting cover and the inner wall of the chassis. The fiber membrane assembly is limited and fixed between the bottom limiting cover and the top limiting cover.

[0013] As an improvement to the above technical solution, the dosing zone, the aeration zone, the settling zone, and the filtration zone are respectively isolated by partitions. The ends of the partitions between the dosing zone and the aeration zone, and between the aeration zone and the settling zone, are respectively provided with water inlets, and the two water inlets are arranged alternately vertically. A water pipe is provided through the partition between the settling zone and the filtration zone, and the inlet end of the water pipe is located above the filter media, and the outlet end of the water pipe is located at the bottom of the filtration zone.

[0014] Due to the adoption of the above technical solution, the box-type sewage treatment machine includes a casing. Inside the casing, along the sewage flow direction, there are sequentially spaced dosing zone, aeration zone, settling zone, and filtration zone, with adjacent zones connected. The aeration zone is equipped with an aeration jet pump, which is connected to aeration jet nozzles via pipelines. The aeration zone also includes aeration pipe devices, each of which is detachable and connected in parallel to the water / air output end of the aeration jet nozzles. The settling zone is filled with filter media. The filtration zone contains a fiber membrane assembly, with limiting and fixing devices between the upper and lower ends of the fiber membrane assembly and the casing. A water flow control device is connected to the fiber membrane assembly. The device is fixed to the outer wall of the casing corresponding to the filtration zone, and the outer cover of the water flow control device is fitted with a protective cover fixedly connected to the casing. This utility model has the following beneficial effects: multi-point aeration can be performed in the aeration zone through the aeration pipe device, which helps to improve the aeration effect. Each aeration pipe device can be controlled independently and selected according to the water volume. Both the aeration pipe device and the fiber membrane module can be disassembled and moved to the outside of the casing for inspection and maintenance, making the inspection and maintenance operation more convenient and realizing maintenance without stopping the machine. The water flow control device can realize the control of normal drainage and backwashing of the fiber membrane module. The function switching is simple, which helps to ensure the filtration effect of the fiber membrane module and indirectly ensures the quality of water treatment. Attached Figure Description

[0015] The following figures are intended only to illustrate and explain the present invention and do not limit the scope of the present invention. Wherein:

[0016] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0017] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure at point A in the middle;

[0018] Figure 3 This is a schematic diagram of the aeration device according to an embodiment of the present invention;

[0019] Figure 4 yes Figure 1A schematic diagram of the cross-sectional structure at point B in the middle;

[0020] In the diagram: 1-Chassis; 2-Dosing area; 3-Aeration area; 4-Settling area; 5-Filtration area; 6-Partition partition; 7-Water pipe; 8-Aeration jet pump; 9-Aeration jet nozzle; 10-Water and air distribution pipe; 11-Installation pipe seat; 12-Aeration control valve; 13-Aeration riser; 14-Aeration layer pipe; 15-Aeration arc pipe; 16-Filter packing; 17-Protective cover; 18-Fiber membrane tube frame; 19-Curtain hollow fiber membrane; 20-Water pipe seat; 21-Connecting pipe seat; 22-Bottom limit cover; 23-Top limit cover; 24-Main outlet pipe; 25-Secondary outlet pipe; 26-Outlet branch pipe; 27-First control water valve; 28-Second control water valve; 29-Third control water valve; 30-Fourth control water valve; 31-Outlet pump. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Undoubtedly, those skilled in the art will recognize that various modifications can be made to the described embodiments without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

[0022] like Figures 1 to 4 As shown, the box-type sewage treatment machine forms an integrated sewage treatment machine that can be used independently and has a regular external structure, making it easy to install and arrange. It can also be relocated later according to site layout requirements. It has few supporting components, resulting in low operating and maintenance costs. This embodiment specifically includes a casing 1, which can be formed by splicing corrugated metal plates. Support legs are provided at the bottom to create a certain gap between the casing 1 and the supporting surface, preventing corrosion due to water accumulation or moisture and helping to extend the service life of the casing 1. Inside the casing 1, along the sewage flow direction, there are sequentially spaced dosing zone 2, aeration zone 3, settling zone 4, and filtration zone 5, with adjacent zones connected. The dosing zone 2 is equipped with conventional components such as an inlet and a sludge discharge port. The inlet is used to introduce wastewater generated during the enterprise's production process into the dosing zone 2 through pipelines, pumps, and other components. The sludge discharge port is used to periodically discharge and clean the sediment formed after dosing.

[0023] The dosing zone 2, aeration zone 3, settling zone 4, and filtration zone 5 are separated by partition plates 6. Water inlets are formed at the ends of the partition plates 6 between the dosing zone 2 and the aeration zone 3, and between the aeration zone 3 and the settling zone 4, respectively. These inlets are staggered vertically. Since a large amount of sediment tends to form in the dosing zone 2, its corresponding water inlet is generally located at the top. The water inlet between the aeration zone 3 and the settling zone 4 is located at the bottom. This maximizes the water flow between the two zones, indirectly improving the treatment effect. A water pipe 7 is provided through the partition plate 6 between the settling zone 4 and the filtration zone 5. The inlet of the water pipe 7 is located above the filter media 16, and the outlet of the water pipe 7 is located at the bottom of the filtration zone 5. This also increases the water flow and enhances the decomposition treatment effect.

[0024] like Figure 1 , Figure 2 and Figure 3 As shown, an aeration jet pump 8 is installed in the aeration zone 3. The aeration jet pump 8 is connected to an aeration jet nozzle 9 via a pipeline. An aeration pipe device is also installed in the aeration zone 3, and each of the aeration pipe devices is detachable and connected in parallel to the water-air output end of the aeration jet nozzle 9. The aeration jet pump 8 lifts the water in the aeration zone 3 and mixes it with the incoming gas at the aeration jet nozzle 9. The mixture is then returned to the aeration zone 3 through the aeration pipe device to increase the dissolved oxygen content in the zone, ensuring the effective degradation of organic matter by aerobic microorganisms. Specifically, a water-air distribution pipe 10 is sealed and connected to the water-air output end of the aeration jet nozzle 9. Depending on the volume of the aeration zone 3, the water-air distribution pipe 10 can be formed by connecting multiple branch pipes to increase the number of aeration pipe devices to meet the aeration needs of the water in the aeration zone 3. The water-air distribution pipe 10 is fixedly connected to each of the aeration pipe devices, and an aeration control valve 12 is provided on the installation pipe seat 11. The aeration control valve 12 can control whether the aeration pipe device connected to it is used, so that each aeration pipe device forms an individual control mode.

[0025] The aeration pipe device includes an aeration riser 13, the top of which is detachably connected to the mounting pipe seat 11 via a flange. The aeration control valve 12 controls the flow of the air-water mixture through the riser 13. Specifically, when the aeration branch containing the riser 13 requires routine inspection and maintenance or malfunction, the aeration branch can be closed via the aeration control valve 12. The riser 13 and its components can then be removed from the casing 1 by disassembling the flange for maintenance. This method is convenient and improves maintenance efficiency. Aeration layer pipes 14 are arranged from top to bottom on the riser 13, and each aeration layer pipe 14 is equipped with at least two aeration arc pipes 15. Figure 2 In this embodiment, three aeration layer pipes 14 are set up at the top, middle and bottom to form three layers of aeration in the casing 1. The aeration arc pipe 15 has a semi-circular structure, which can form a swirling aeration effect in the water, so as to both agitate the water and ensure the aeration effect and prevent the active mud from settling.

[0026] In this embodiment, the spray directions of adjacent aeration arc tubes 15 on the same aeration riser 13 are opposite, thereby enhancing water flow turbulence, preventing inertial swirling, and allowing the water carrying air bubbles to flow horizontally first. As the kinetic energy decreases, the air bubbles then rise, thus prolonging the contact time between the air bubbles and the water, which helps improve oxygen transfer efficiency. The aeration arc tubes 15 on adjacent aeration risers 13 can be staggered vertically to avoid jet collisions.

[0027] The settling zone 4 is filled with filter media 16 for filtering the water and blocking any floating debris, allowing the relatively clean water to enter the filtration zone 5 for further treatment. A fiber membrane assembly is placed in the filtration zone 5, and limiting and fixing devices are provided between the upper and lower ends of the fiber membrane assembly and the housing 1. A water flow control device is connected to the fiber membrane assembly and fixed to the outer wall of the housing 1 corresponding to the filtration zone 5. A protective cover 17, fixedly connected to the housing 1, is attached to the outer side of the water flow control device. The protective cover 17 also features conventional structures such as a filter screen for heat dissipation of internal components and a side door for easy maintenance. The fiber membrane assembly is placed directly inside the housing 1 and fixed by the limiting and fixing devices for easy assembly and disassembly. In use, this embodiment only requires the purchase of an additional spare fiber membrane module. When the fiber membrane module in the housing 1 has been used for a long time, it needs to be inspected and maintained to ensure the water treatment effect. At this time, the fiber membrane module can be separated from the water flow control device by operating the limiting and fixing device, and the entire fiber membrane module can be moved out of the housing 1 with the help of the hoisting equipment. The spare fiber membrane module can then be installed in the housing 1. This realizes the non-stop operation and maintenance of the sewage treatment machine, and the maintenance can be carried out from the outside of the housing 1, which is convenient and safe.

[0028] The fiber membrane assembly includes a cuboid frame-shaped fiber membrane tube frame 18 formed by interconnected metal tubes. Several parallel-arranged curtain-type hollow fiber membranes 19 are arranged and connected within the fiber membrane tube frame 18. A water inlet pipe seat 20 is installed and connected to the side of the fiber membrane tube frame 18 near the protective cover 17. A connecting pipe seat 21, which penetrates the housing 1 and is sealed and fixedly installed on the water inlet pipe seat 20, is connected to the water flow control device. Maintenance of the fiber membrane assembly includes inspecting the curtain-type hollow fiber membranes 19 and replacing faulty components. When moving the fiber membrane assembly, the water inlet pipe seat 20 and the connecting pipe seat 21 need to be separated. For ease of operation, both can be positioned near the top of the housing 1 for easy access. During disassembly and assembly, maintenance personnel can stand on the protective cover 17, providing a large support area and ensuring safe operation.

[0029] like Figure 4As shown, the limiting and fixing device includes a bottom limiting cover 22 fixedly installed on the bottom wall of the housing 1 corresponding to the filtration zone 5. A top limiting cover 23 is provided above the bottom limiting cover 22, and the top limiting cover 23 has at least two sides that are detachably connected to the housing 1, and the other two sides form airflow channels between the top limiting cover 23 and the inner wall of the housing 1. The fiber membrane assembly is limited and fixed between the bottom limiting cover 22 and the top limiting cover 23. The assembly ends of the water pipe seat 20 and the connecting pipe seat 21 are located in the airflow channels, so the size of the airflow channels here should facilitate disassembly and assembly operations during operation and maintenance. When the water flow control device is used in conjunction with the fiber membrane module to treat the water in the filtration zone 5, the water inside the fiber membrane module has a certain pressure. Therefore, it is necessary to use the bottom limiting cover 22 and the top limiting cover 23 to fix it. At the same time, the detachable installation of the top limiting cover 23 enables the quick assembly and disassembly of the fiber membrane module to meet the requirements of non-stop operation and maintenance.

[0030] like Figure 4 As shown, the water flow control device can realize the discharge of treated water and the backwashing of the fiber membrane module. Specifically, the water flow control device includes a main water outlet pipe 24 detachably connected to the connecting pipe seat 21 and a secondary water outlet pipe 25 detachably connected to the chassis 1. A water outlet branch pipe 26 connects the main water outlet pipe 24 and the secondary water outlet pipe 25. A first control water valve 27 and a second control water valve 28 are connected in series on the main water outlet pipe 24. A third control water valve 29 is connected in series on the secondary water outlet pipe 25. A fourth control water valve 30 is connected in series on the water outlet branch pipe 26. A water outlet pump 31 is also installed on the secondary water outlet pipe 25. The connection point between the water outlet branch pipe 26 and the secondary water outlet pipe 25 is located between the third control water valve 29 and the water outlet pump 31. The water outlet end of the water outlet pump 31 is connected to the main water outlet pipe 24, and the connection point is located between the first control water valve 27 and the second control water valve 28.

[0031] When the drainage function is used, the water pump 31 is started, the first control water valve 27 and the third control water valve 29 are closed, and the second control water valve 28 and the fourth control water valve 30 are opened. Water in the filtration zone 5, pumped by the water pump 31, passes through the curtain-type hollow fiber membrane 19, then through the main water outlet pipe 24, the water outlet branch pipe 26, and via the auxiliary water outlet pipe 25 on the outlet side of the third control water valve 29, enters the water pump 31. The water is then pumped by the water pump 31 to the second control water valve 28 and discharged outwards. Figure 4The path is marked with a solid line. When the backwashing function is used, the outlet pump 31 is started, the first control water valve 27 and the third control water valve 29 are opened, and the second control water valve 28 and the fourth control water valve 30 are closed. The water in the filtration zone 5 is pumped by the outlet pump 31, sequentially passing through the third control water valve 29, the outlet pump 31, and the first control water valve 27 into the curtain-type hollow fiber membrane 19 for backwashing. Figure 4 The path is marked with a dashed line. In this embodiment, a PLC controller can be set up. The first control water valve 27, the second control water valve 28, the third control water valve 29, and the fourth control water valve 30 can be set as solenoid valves. The automatic implementation of water treatment is completed through the cooperation of each valve with the PLC controller, and the cooperation of the PLC controller with the electrical control of each pump.

[0032] The description of this utility model is given for illustrative and descriptive purposes only, and is not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the utility model, and to enable those skilled in the art to understand the utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A box-type wastewater treatment unit, comprising a casing, wherein a dosing zone, an aeration zone, a settling zone, and a filtration zone are sequentially and spaced apart along the wastewater flow direction within the casing, and adjacent zones are connected to each other, characterized in that: An aeration jet pump is installed in the aeration zone, and the aeration jet pump is connected to an aeration jet nozzle through a pipeline. An aeration pipe device is also installed in the aeration zone, and each of the aeration pipe devices is detachable and connected in parallel to the water and air output end of the aeration jet nozzle. The settling zone is filled with filter media, and a fiber membrane module is placed in the filtration zone. Limiting and fixing devices are provided between the upper and lower ends of the fiber membrane module and the casing. A water flow control device is connected to the fiber membrane module and is fixed to the outer wall of the casing corresponding to the filtration zone. The outer side of the water flow control device is covered with a protective cover that is fixedly connected to the casing.

2. The box-type sewage treatment machine as described in claim 1, characterized in that: The water and air output end of the aeration jet nozzle is sealed and connected to a water and air distribution pipe. The water and air distribution pipe is fixedly connected to an installation pipe seat corresponding to each of the aeration pipe devices. An aeration control valve is provided on the installation pipe seat.

3. The box-type sewage treatment machine as described in claim 2, characterized in that: The aeration pipe device includes an aeration riser, the top of which is detachably connected to the mounting pipe seat via a flange. Aeration layer pipes are arranged and connected from top to bottom on the aeration riser, and each aeration layer pipe is provided with at least two aeration arc pipes.

4. The box-type sewage treatment machine as described in claim 3, characterized in that: The spraying directions of adjacent aeration arc pipes on the same aeration riser are opposite.

5. The box-type sewage treatment machine as described in claim 3, characterized in that: The aeration arc pipes on two adjacent aeration risers are arranged alternately, one above the other.

6. The box-type sewage treatment machine as described in claim 1, characterized in that: The fiber membrane assembly includes a rectangular frame-shaped fiber membrane tube frame formed by metal tubes. Several parallel curtain-type hollow fiber membranes are arranged and connected in the fiber membrane tube frame. A water pipe seat is installed and connected on the side of the fiber membrane tube frame near the protective cover. A connecting pipe seat is installed on the water pipe seat, which is sealed and fixedly installed through the casing. The connecting pipe seat is connected to the water flow control device.

7. The box-type sewage treatment machine as described in claim 6, characterized in that: The water flow control device includes a main water outlet pipe detachably connected to the connecting pipe seat and a secondary water outlet pipe detachably connected to the chassis. A branch water outlet pipe connects the main water outlet pipe and the secondary water outlet pipe. A first control water valve and a second control water valve are connected in series on the main water outlet pipe, a third control water valve is connected in series on the secondary water outlet pipe, and a fourth control water valve is connected in series on the branch water outlet pipe. A water pump is also installed on the secondary water outlet pipe. The connection point between the branch water outlet pipe and the secondary water outlet pipe is located between the third control water valve and the water pump. The outlet end of the water pump is connected to the main water outlet pipe, and the connection point is located between the first control water valve and the second control water valve.

8. The box-type sewage treatment machine as described in claim 1, characterized in that: The limiting and fixing device includes a bottom limiting cover fixedly installed on the bottom wall of the chassis corresponding to the filtration area, a top limiting cover opposite to the bottom limiting cover, and the top limiting cover has at least two sides that are detachably connected to the chassis, and the other two sides form airflow channels between the top limiting cover and the inner wall of the chassis. The fiber membrane assembly is limited and fixed between the bottom limiting cover and the top limiting cover.

9. The box-type sewage treatment machine as described in claim 1, characterized in that: The dosing zone, aeration zone, settling zone, and filtration zone are separated by partitions. The ends of the partitions between the dosing zone and the aeration zone, and between the aeration zone and the settling zone, are respectively provided with water inlets. The two water inlets are arranged alternately vertically. A water pipe is provided through the partition between the settling zone and the filtration zone. The inlet end of the water pipe is located above the filter media, and the outlet end of the water pipe is located at the bottom of the filtration zone.

Images