Special ceramic membrane purification equipment and process for tunnel construction wastewater

Abstract

The invention discloses special ceramic membrane purification equipment and process for tunnel construction wastewater, relates to the technical field of tunnel wastewater treatment, and aims to solve the technical problem that the tunnel wastewater purification time is too long due to the fact that passive precipitation is mostly adopted when a mechanical filtering device is utilized, the special ceramic membrane purification equipment comprises a hoisting frame, and a control table is fixedly connected to one side of the hoisting frame. By arranging the ceramic microfiltration membrane, large-flux water permeation can be achieved, dirt in waste water can be intercepted, meanwhile, an inner cavity is formed between the I-shaped sleeve and the purification cover, the ceramic microfiltration membrane can actively intercept the waste water, the dirt attached to the surface of the ceramic microfiltration membrane can be actively discharged in the rotating process of the I-shaped sleeve, the water permeation efficiency is improved, and the water permeation effect is improved. And the device adopts a hoisting frame composed of a plurality of steel pipes, the overall bearing capacity of the device and the convenience of hoisting transportation can be improved, the equipment is highly integrated, the occupied area is reduced, and the reliability of the device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel wastewater treatment, and more specifically to a special ceramic membrane purification device and process for tunnel construction wastewater. Background Art

[0002] A large amount of wastewater will be generated during the tunnel construction process. This wastewater contains a large amount of suspended matter, sediment, oil, heavy metals, chemicals and other harmful components. If it is not effectively treated, it will not only pollute the surrounding environment, but also may affect the construction progress and quality. Therefore, the treatment of tunnel construction wastewater has become an important environmental protection issue; the special ceramic membrane purification equipment for tunnel construction wastewater is a kind of equipment specially used to treat wastewater generated during tunnel construction; this equipment uses special ceramic membrane as the filter medium, which can effectively remove suspended matter, organic matter, heavy metals and other pollutants in the wastewater to meet the national emission standards.

[0003] At present, when purifying tunnel construction wastewater, it is necessary to add coagulants into the wastewater pool to separate water and solid dirt. At the same time, mechanical filtration devices are used to filter and purify the wastewater. However, during the purification process, most of them are passive precipitation, which leads to too long time for purifying tunnel wastewater, thereby reducing the efficiency of wastewater purification. In view of this, we propose a special ceramic membrane purification equipment for tunnel construction wastewater. Summary of the invention

[0004] The purpose of the present invention is to provide a special ceramic membrane purification device and process for tunnel construction wastewater, so as to solve the technical problem that when using mechanical filtering devices, most of them are passive precipitation, resulting in a long time for purifying tunnel wastewater.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a special ceramic membrane purification equipment for tunnel construction wastewater, comprising a hanging frame, one side of the hanging frame is fixedly connected to a control console, the two sides of the hanging frame are respectively fixedly connected to a first support frame and a second support frame, and a purification mechanism is arranged inside the hanging frame; the purification mechanism comprises a heating module, a backwashing unit and a collecting unit, the backwashing unit is fixedly connected to the purification mechanism, and the purification mechanism is fixedly connected to the collecting unit; the heating module is arranged on one side of the top of the second support frame, a pumping module is arranged on the inner wall of the bottom of the hanging frame, a purification tank is fixedly sleeved on the inner wall of the first support frame, a purification cover is arranged on the top of the purification tank, an I-shaped sleeve is movably connected between the purification tank and the purification cover, a plurality of through holes are opened on the top of the I-shaped sleeve and the through holes are distributed in a ring array, each of the A ceramic microfiltration membrane is fixedly sleeved on the inner wall of the through hole, an outer gear ring is fixedly sleeved on the top of the I-shaped sleeve, a first motor is fixedly connected to the side surface of the purification cover, a first gear is fixedly connected to the output end of the first motor and the first gear is meshingly connected to the outer gear ring, a water outlet pipe is fixedly connected to the side surface of the purification tank through a first water pump, and a water inlet pipe is fixedly connected to the top of the purification cover. The present invention can penetrate water with a large flux and intercept dirt in the wastewater by arranging a ceramic microfiltration membrane. At the same time, an inner cavity is formed between the I-shaped sleeve and the purification cover, so that the ceramic microfiltration membrane can actively intercept wastewater, and dirt adhered to the surface of the ceramic microfiltration membrane can be actively discharged during the rotation of the I-shaped sleeve, thereby improving the water permeability efficiency. In addition, the device adopts a hoisting frame composed of multiple steel pipes, which can improve the overall load-bearing capacity of the device and the convenience of hoisting and transportation, and by highly integrating the equipment, the floor space is reduced, which is conducive to improving the reliability of the device.

[0006] Preferably, the heating module includes a processing box, which is fixedly connected to one side of the top of the second support frame, and the inner wall of one side of the processing box is fixedly connected to a U-shaped tube by a first bolt, and the input end of the U-shaped tube is fixedly connected to the first pipeline by a second bolt, and one side of the processing box is fixedly connected to an electric heater in a symmetrical structure, and the output end of the U-shaped tube is fixedly connected to the second pipeline by a third bolt.

[0007] Preferably, the pumping module includes a plurality of second water pumps, which are fixedly connected to the inner wall of the bottom of the lifting frame and are distributed in a linear array, the output ends of the second water pumps are commonly fixedly connected to an output pipe and the water inlet pipe and the output pipe are fixedly connected by a fourth bolt, and the input ends of the second water pumps are commonly fixedly connected to an input pipe and the second pipe and the input pipe are fixedly connected by a fifth bolt.

[0008] Preferably, the backwash unit comprises a purification box, the purification box is fixedly connected to the other side of the top of the second support frame, and the water outlet pipe is fixedly connected to the purification box, and the bottom of the purification tank is fixedly sleeved with a sealing sleeve.

[0009] Preferably, two high-pressure nozzles are fixedly sleeved on the inner wall of the purification tank and the positions of the high-pressure nozzles correspond to the ceramic microfiltration membrane. The bottoms of the two high-pressure nozzles are fixedly connected to a third pipe through a high-pressure water pump and the third pipe is fixedly connected to the bottom of the purification box.

[0010] Preferably, the collecting unit includes a conveying pipe, which is movably sleeved on the bottom inner wall of the I-shaped sleeve, and the top inner wall of the I-shaped sleeve is fixedly sleeved with a limiting ring. The inner wall of the conveying pipe is fixedly sleeved with an auger and one end of the auger extends to the inner wall of the I-shaped sleeve, and one end of the auger is fixedly connected to a fixing ring, and a transmission ring is movably connected between the fixing ring and the limiting ring, and a baffle is slidably connected between the fixing ring and the transmission ring through a first pin.

[0011] Preferably, a plurality of ratchets are fixedly connected to the inner wall at the top of the I-shaped sleeve and the ratchets are distributed in a circular array, a plurality of pawls are movably connected to the side surface of the transmission ring through a first plug rod and the ratchets are meshingly connected to the pawls, and a first spring is fixedly connected to one side of each pawl in a symmetrical structure and the first spring is fixedly connected to the transmission ring.

[0012] Preferably, the bottom of the delivery pipe is fixedly connected to a collecting box, a filter box is slidably connected inside the collecting box, the bottom of the collecting box is fixedly connected to a return pipe through a valve, and the return pipe is fixedly connected to the input pipe through a sixth bolt. In the present invention, during wastewater purification, dirt on the upper surface of the ceramic microfiltration membrane is removed by rotating the I-shaped sleeve to prevent clogging, wherein the baffle is in a closed state through a unidirectional rotating structure to prevent wastewater from flowing out of the I-shaped sleeve without being purified, and when the I-shaped sleeve rotates in the opposite direction, the baffle is in an open state to discharge the refined dirt from the inner cavity, and then after sedimentation, filtration and purification, the wastewater purification effect and efficiency can be improved.

[0013] Preferably, a treatment process of a special ceramic membrane purification device for tunnel construction wastewater comprises the following steps:

[0014] S1. Wastewater pretreatment: Tunnel construction wastewater is first pretreated, in which a screen is usually used to remove larger particles of suspended matter and sediment. After pretreatment, the first pipe is installed at the wastewater channel output port, and the first pipe is sealed with the channel output port by other sealing means to prevent wastewater from flowing out;

[0015] S2, ceramic membrane purification;

[0016] S2.1, wastewater heating treatment: first, the electric heater is operated through the external circuit mechanism to increase the temperature in the treatment box to meet the standard, and the U-shaped tube is made of aluminum alloy, which has good corrosion resistance and heat conduction function, so as to increase the temperature of the U-shaped tube, and then the external control system is used to make several second water pumps work at the same time, and the wastewater flows from the first pipeline into the U-shaped tube. After heating treatment, it can prevent the wastewater from freezing in extremely cold weather or plateau areas and unable to be purified;

[0017] S2.2, ceramic membrane filtration treatment: after the wastewater is heated, the wastewater is made to flow from the water inlet pipe into the purification tank through the second water pump. At this time, several baffles are in a closed state, and the wastewater is filtered through the ceramic microfiltration membrane. Dirt is retained at the input port of the ceramic microfiltration membrane, which will cause the ceramic microfiltration membrane to be blocked, reducing the flow rate of wastewater. The first motor can be driven by the external circuit mechanism to drive the first gear, and the first gear is meshed with the outer gear ring to rotate the I-shaped sleeve, so that part of the blockage can be discharged from the inside of the ceramic microfiltration membrane. After the wastewater is filtered, the purified water flows from the water outlet pipe into the purification box through the first water pump, and then passes through the ultraviolet lamp inside the purification box to disinfect the purified water;

[0018] S2.3, ceramic membrane backwashing treatment: after the wastewater is purified, the water in the purification box is first sprayed out from the high-pressure nozzle through the high-pressure water pump through the external control system. At this time, the I-shaped sleeve is driven to rotate by the first motor, and a number of baffles are in a closed state. The ceramic microfiltration membrane is reversely flushed so that the dirt inside it is sprayed out from the input end. Then, the I-shaped sleeve is driven to rotate in the opposite direction by the first motor. Through the unidirectional rotation structure, a number of baffles are opened, and the wastewater and dirt flow into the I-shaped sleeve from there, and the mixed flow flows on the auger. The liquid flow speed is faster than the solid flow speed, so that part of the liquid and dirt are separated. Then, the I-shaped sleeve is driven to rotate by the first motor. After the unidirectional structure, a number of baffles are still in an open state, and the dirt contacts the inner wall of the I-shaped sleeve, flows downward on the auger, and enters the filter box through the delivery pipe to separate the solid and liquid. The separated liquid is flowed into the input pipe through the reflux pipe through the valve for re-purification.

[0019] S3, sludge treatment, the sludge settles inside the filter box and is transported to the designated location through an external transport device.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention can penetrate water with a large flux and intercept dirt in wastewater by arranging a ceramic microfiltration membrane. At the same time, an inner cavity is formed between the I-shaped sleeve and the purification cover, so that the ceramic microfiltration membrane can actively intercept wastewater, and the dirt adhering to the surface of the ceramic microfiltration membrane can be actively discharged during the rotation of the I-shaped sleeve, thereby improving the water permeability efficiency. In addition, the device adopts a hoisting frame composed of multiple steel pipes, which can improve the overall load-bearing capacity of the device and the convenience of hoisting and transportation. In addition, by highly integrating the equipment, the floor space is reduced, which is conducive to improving the reliability of the device.

[0022] 2. In the wastewater purification of the present invention, the dirt on the upper surface of the ceramic microfiltration membrane is removed by rotating the I-shaped sleeve to prevent clogging. The baffle is in a closed state through a unidirectional rotating structure to prevent the wastewater from flowing out of the I-shaped sleeve without being purified. When the I-shaped sleeve rotates in the opposite direction, the baffle is in an open state to discharge the refined dirt from the inner cavity. After precipitation, filtration and purification, the wastewater purification effect and efficiency can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0024] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0025] Figure 3 For the present invention Figure 2 A is an enlarged structural diagram;

[0026] Figure 4 It is a schematic diagram of the three-dimensional explosion structure of the purification mechanism of the present invention;

[0027] Figure 5 It is a three-dimensional partial explosion structure schematic diagram of the present invention, to show the three-dimensional structure of the I-shaped sleeve;

[0028] Figure 6 It is a schematic diagram of the three-dimensional explosion structure of the collecting unit of the present invention;

[0029] Figure 7 It is a three-dimensional partial enlarged structural schematic diagram of the purification mechanism of the present invention;

[0030] Figure 8 It is a schematic diagram of the three-dimensional explosion structure of the collecting unit of the present invention;

[0031] Fig. 9 For the present invention Figure 8 The enlarged structural diagram at B in FIG.

[0032] Explanation of the numbers in the figure: 1. Hoisting frame; 101. Control console; 2. First support frame; 3. Second support frame; 4. Purification mechanism; 401. Heating module; 4011. Processing box; 4012. U-shaped tube; 4013. First pipeline; 4014. Electric heater; 4015. Second pipeline; 402. Pumping module; 4021. Second water pump; 4022. Output pipe; 4023. Input pipe; 403. Purification tank; 404. Purification cover; 405. I-shaped sleeve; 406. Through hole; 407. Ceramic microfiltration membrane; 408. External gear ring; 409. First Motor; 410, first gear; 411, first water pump; 412, water outlet pipe; 413, water inlet pipe; 5, backwash unit; 501, purification box; 502, sealing sleeve; 503, high-pressure nozzle; 504, high-pressure water pump; 505, third pipeline; 6, collection unit; 601, delivery pipe; 602, limit ring; 603, auger; 604, fixing ring; 605, transmission ring; 606, baffle; 607, ratchet; 608, pawl; 609, first spring; 610, collection box; 611, filter box; 612, valve; 613, return pipe. DETAILED DESCRIPTION

[0033] like Figures 1 to 9As shown, the present invention relates to a special ceramic membrane purification equipment and process for tunnel construction wastewater, including a lifting frame 1. It is worth noting that the lifting frame 1 is composed of a plurality of support columns, which makes the equipment highly integrated. The frame mode of the container is adopted, which is convenient for lifting the equipment and is provided in the next project to achieve transportation, installation and convenience. A control console 101 is fixedly connected to one side of the lifting frame 1. It is worth noting that the control console 101 has remote monitoring and alarm functions. All system equipment of the equipment adopts centralized electrical control, which can be remotely monitored and fault alarmed, and real-time data monitoring and remote transmission are convenient to operate, saving labor in daily operations. The first support frame 2 and the second support frame 3 are fixedly connected to the inside of the lifting frame 1 on both sides. 1 is provided with a purification mechanism 4 inside; the purification mechanism 4 includes a heating module 401, a backwashing unit 5 and a collecting unit 6, the backwashing unit 5 is fixedly connected to the purification mechanism 4, and the purification mechanism 4 is fixedly connected to the collecting unit 6; the heating module 401 is arranged on one side of the top of the second support frame 3, a pumping module 402 is arranged on the inner wall of the bottom of the hanging frame 1, a purification tank 403 is fixedly sleeved on the inner wall of the first support frame 2, a purification cover 404 is arranged on the top of the purification tank 403, and an I-shaped sleeve 405 is movably connected between the purification tank 403 and the purification cover 404. It is worth noting that the I-shaped sleeve 405 is sealed and rotated between the purification tank 403 and the purification cover 404 to prevent liquid leakage from affecting the wastewater purification function. A plurality of through holes 406 are provided on the top of the I-shaped sleeve 405, and the through holes 406 are distributed in a circular array. A ceramic microfiltration membrane 407 is fixedly sleeved on the inner wall of each through hole 406. It is worth noting that the ceramic microfiltration membrane 407 utilizes the hydrophilicity of the silicon carbide membrane to transmit water with a large flux, and at the same time intercepts suspended matter and oil-containing substances in the wastewater, so that the wastewater can be in and out at the same time, saving the civil engineering cost and land cost required for the construction of a large number of sedimentation tanks required by traditional processes. An outer toothed ring 408 is fixedly sleeved on the top of the I-shaped sleeve 405, and a first motor 409 is fixedly connected to the side surface of the purification cover 404. A first gear 410 is fixedly connected to the output end of the first motor 409, and the first gear 410 is meshed with the outer toothed ring 408. The purification tank 403 The side surface is fixedly connected to a water outlet pipe 412 through a first water pump 411, and the top of the purification cover 404 is fixedly connected to a water inlet pipe 413. The present invention can penetrate water with a large flux and intercept dirt in the wastewater by arranging a ceramic microfiltration membrane 407. At the same time, an inner cavity is formed between the I-shaped sleeve 405 and the purification cover 404, so that the ceramic microfiltration membrane 407 can actively intercept wastewater, and the dirt adhered to the surface of the ceramic microfiltration membrane 407 can be actively discharged during the rotation of the I-shaped sleeve 405, thereby improving the water permeability efficiency. In addition, the device adopts a hoisting frame 1 composed of multiple steel pipes, which can improve the overall load-bearing capacity of the device and the convenience of hoisting and transportation, and by highly integrating the equipment, the floor space is reduced, which is conducive to improving the reliability of the device.

[0034] In an embodiment of the present invention, the heating module 401 includes a treatment box 4011, which is fixedly connected to one side of the top of the second support frame 3. The inner wall of one side of the treatment box 4011 is fixedly connected to a U-shaped tube 4012 by a first bolt. It is worth noting that the U-shaped tube 4012 is an aluminum alloy pipe with good thermal conductivity. The wastewater in the U-shaped tube 4012 can be heated by an electric heater 4014. The input end of the U-shaped tube 4012 is fixedly connected to the first pipe 4013 by a second bolt. One side of the treatment box 4011 is fixedly connected to the electric heater in a symmetrical structure. 4014. It is worth mentioning that the electric heater 4014 is composed of a heating element, a shell and a controller, etc., which can heat the wastewater in the U-tube 4012. Compared with other energy sources, such as gas and oil heaters, the electric heater 4014 has a higher thermal efficiency and more effective use of resources, and can reach the required temperature in a short time. At the same time, under the extremely cold climate conditions of the plateau, it can prevent the wastewater from staying in the outside world for too long and causing freezing, resulting in the water body freezing and being unable to be purified. The output end of the U-tube 4012 is fixedly connected to the second pipe 4015 by a third bolt.

[0035] In an embodiment of the present invention, the pumping module 402 includes a plurality of second water pumps 4021, which are fixedly connected to the inner wall at the bottom of the lifting frame 1 and are distributed in a linear array, the output ends of the plurality of second water pumps 4021 are commonly fixedly connected to an output pipe 4022 and the water inlet pipe 413 is fixedly connected to the output pipe 4022 by a fourth bolt, and the input ends of the plurality of second water pumps 4021 are commonly fixedly connected to an input pipe 4023 and the second pipeline 4015 is fixedly connected to the input pipe 4023 by a fifth bolt.

[0036] As another embodiment of the present invention, the backwash unit 5 includes a purification box 501. It is worth noting that a number of ultraviolet lamps are arranged inside the purification box 501 to disinfect the purified water source and kill possible pathogens. The purification box 501 is fixedly connected to the other side of the top of the second support frame 3 and the water outlet pipe 412 is fixedly connected to the purification box 501. A sealing sleeve 502 is fixedly sleeved on the bottom of the purification tank 403. Two high-pressure nozzles 503 are fixedly sleeved on the inner wall of the purification tank 403, and the high-pressure nozzles 503 correspond to the ceramic microfiltration membrane 407. The bottoms of the two high-pressure nozzles 503 are fixedly connected to a third pipe 505 through a high-pressure water pump 504, and the third pipe 505 is fixedly connected to the bottom of the purification box 501.

[0037] As another embodiment of the present invention, the collection unit 6 includes a delivery pipe 601, which is movably sleeved on the bottom inner wall of the I-shaped sleeve 405, and a limit ring 602 is fixedly sleeved on the top inner wall of the I-shaped sleeve 405. An auger 603 is fixedly sleeved on the inner wall of the delivery pipe 601, and one end of the auger 603 extends to the inner wall of the I-shaped sleeve 405. It is worth noting that by setting the auger 603, when the ceramic microfiltration membrane 407 is backwashed, the solid dirt and the liquid are mixed, and the flow rate of the solid dirt can be reduced by the auger 603, so that the liquid is separated from it, and the liquid circulates quickly to achieve solid-liquid separation, and then the I-shaped sleeve 405 is driven to rotate by the first motor 409. , the solid dirt on the auger 603 can be transported to the bottom, and then the solid dirt is collected and processed uniformly. One end of the auger 603 is fixedly connected with a fixing ring 604, and a transmission ring 605 is movably connected between the fixing ring 604 and the limiting ring 602. A baffle 606 is slidably connected between the fixing ring 604 and the transmission ring 605 through a first latch. A plurality of ratchet teeth 607 are fixedly connected to the inner wall of the top of the I-shaped sleeve 405, and the ratchet teeth 607 are distributed in a ring array. A plurality of ratchet claws 608 are movably connected to the side surface of the transmission ring 605 through a first plug rod, and the ratchet teeth 607 are meshed with the ratchet claws 608. One side of each ratchet claw 608 is fixedly connected in a symmetrical structure. There is a first spring 609 and the first spring 609 is fixedly connected to the transmission ring 605. It is worth noting that by setting a one-way rotating structure, when the I-shaped sleeve 405 rotates clockwise or counterclockwise, the baffle 606 is in two states, one is a closed state, when the ceramic microfiltration membrane 407 purifies wastewater, it can prevent water from flowing from a number of baffles 606 into the collection box 610, resulting in secondary purification, and the other is an open state. During the backwashing of the ceramic microfiltration membrane 407, sewage and solid dirt flow into the collection box 610 from it. The bottom of the delivery pipe 601 is fixedly connected to the collection box 610, and the collection box 610 is slidably connected to the filter box 611. The bottom of 610 is fixedly connected with a return pipe 613 through a valve 612, and the return pipe 613 is fixedly connected with the input pipe 4023 through a sixth bolt. In the present invention, during wastewater purification, the dirt on the upper surface of the ceramic microfiltration membrane 407 is removed by rotating the I-shaped sleeve 405 to prevent clogging. The baffle 606 is in a closed state through a one-way rotating structure to prevent wastewater from flowing out of the I-shaped sleeve 405 without being purified. When the I-shaped sleeve 405 rotates in the opposite direction, the baffle 606 is in an open state to discharge the refined dirt from the inner cavity, and then after precipitation, filtration and purification, the wastewater purification effect and efficiency can be improved.

[0038] As another embodiment of the present invention, a treatment process of a special ceramic membrane purification device for tunnel construction wastewater comprises the following steps:

[0039] S1. Wastewater pretreatment: Tunnel construction wastewater is first pretreated, wherein a screen is usually used to remove larger particles of suspended matter and sediment. After pretreatment, the first pipe 4013 is installed at the wastewater channel output port, and the first pipe 4013 is sealed with the channel output port by other sealing means to prevent wastewater from flowing out;

[0040] S2, ceramic membrane purification;

[0041] S2.1, wastewater heating treatment: first, the electric heater 4014 is operated through the external circuit mechanism to increase the temperature in the treatment box 4011 to meet the standard, and the U-shaped tube 4012 is made of aluminum alloy, which has good corrosion resistance and heat conduction function, so as to increase the temperature of the U-shaped tube 4012, and then the external control system is used to make a plurality of second water pumps 4021 work at the same time, and the wastewater flows from the first pipeline 4013 into the U-shaped tube 4012. After the heating treatment, the wastewater can be prevented from freezing in extremely cold weather or plateau areas and cannot be purified;

[0042] S2.2, ceramic membrane filtration treatment: after the wastewater is heated, the wastewater is made to flow from the water inlet pipe 413 into the purification tank 403 through the second water pump 4021. At this time, the plurality of baffles 606 are in a closed state, and the wastewater is filtered through the ceramic microfiltration membrane 407. Dirt is retained at the input port of the ceramic microfiltration membrane 407, which will cause the ceramic microfiltration membrane 407 to be blocked, thereby reducing the flow rate of wastewater. The first motor 409 can be used to drive the first gear 410 through an external circuit mechanism. The first gear 410 is meshed with the outer gear ring 408 for transmission, so that the I-shaped sleeve 405 rotates, and part of the blockage can be discharged from the ceramic microfiltration membrane 407. After the wastewater is filtered, the purified water flows from the water outlet pipe 412 through the first water pump 411 into the purification box 501, and then passes through the ultraviolet lamp tube inside the purification box 501 to disinfect the purified water;

[0043] S2.3, ceramic membrane backwashing treatment: After the wastewater is purified, the water in the purification box 501 is first sprayed out from the high-pressure nozzle 503 through the high-pressure water pump 504 through the external control system. At this time, the I-shaped sleeve 405 is driven to rotate by the first motor 409, and the plurality of baffles 606 are in a closed state. The ceramic microfiltration membrane 407 is backwashed to make the dirt inside it spray out from the input end, and then the I-shaped sleeve 405 is driven to rotate in the opposite direction by the first motor 409. The unidirectional rotating structure makes the plurality of baffles 606 open, and the wastewater and dirt are discharged from it. The mixture flows into the I-shaped sleeve 405, and flows on the auger 603. The liquid flows faster than the solid flow, so that part of the liquid and dirt are separated. Then, the I-shaped sleeve 405 is driven to rotate by the first motor 409. After passing through the one-way structure, the plurality of baffles 606 are still in an open state. The dirt contacts the inner wall of the I-shaped sleeve 405, flows downward on the auger 603, passes through the delivery pipe 601 and enters the filter box 611, so that the solid and liquid are separated. The separated liquid is then passed through the return pipe 613 through the valve 612 and flows into the input pipe 4023 for re-purification.

[0044] S3, sludge treatment, the sludge is precipitated inside the filter box 611, and the sludge is transported to a designated location through an external transport device.

[0045] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A special ceramic membrane purification equipment for tunnel construction wastewater, characterized in that: It comprises a hanging frame (1), one side of the hanging frame (1) is fixedly connected to a control console (101), two sides of the hanging frame (1) are respectively fixedly connected to a first support frame (2) and a second support frame (3), and a purification mechanism (4) is arranged inside the hanging frame (1); The purification mechanism (4) comprises a heating module (401), a backwashing unit (5) and a collecting unit (6); the backwashing unit (5) is fixedly connected to the purification mechanism (4); and the purification mechanism (4) is fixedly connected to the collecting unit (6); The heating module (401) is arranged on one side of the top of the second support frame (3); a pumping module (402) is arranged on the inner wall of the bottom of the hanging frame (1); a purification tank (403) is fixedly sleeved on the inner wall of the first support frame (2); a purification cover (404) is arranged on the top of the purification tank (403); an I-shaped sleeve (405) is movably connected between the purification tank (403) and the purification cover (404); a plurality of through holes (406) are opened on the top of the I-shaped sleeve (405), and the through holes (406) are distributed in a ring array, and each of the through holes (406) is provided with a plurality of through holes (406) arranged on the top of the I-shaped sleeve (405); 06) A ceramic microfiltration membrane (407) is fixedly sleeved on the inner wall, an outer gear ring (408) is fixedly sleeved on the top of the I-shaped sleeve (405), a first motor (409) is fixedly connected to the side surface of the purification cover (404), a first gear (410) is fixedly connected to the output end of the first motor (409), and the first gear (410) is meshingly connected to the outer gear ring (408), a water outlet pipe (412) is fixedly connected to the side surface of the purification tank (403) through a first water pump (411), and a water inlet pipe (413) is fixedly connected to the top of the purification cover (404).

2. A special ceramic membrane purification equipment for tunnel construction wastewater according to claim 1, characterized in that: The heating module (401) comprises a processing box (4011), wherein the processing box (4011) is fixedly connected to one side of the top of the second support frame (3); a U-shaped tube (4012) is fixedly connected to the inner wall of one side of the processing box (4011) via a first bolt; an input end of the U-shaped tube (4012) is fixedly connected to a first pipeline (4013) via a second bolt; an electric heater (4014) is fixedly connected to one side of the processing box (4011) in a symmetrical structure; and an output end of the U-shaped tube (4012) is fixedly connected to a second pipeline (4015) via a third bolt.

3. A special ceramic membrane purification equipment for tunnel construction wastewater according to claim 1, characterized in that: The pumping module (402) comprises a plurality of second water pumps (4021), wherein the plurality of second water pumps (4021) are fixedly connected to the inner wall of the bottom of the hanging frame (1) and the second water pumps (4021) are distributed in a linear array, the output ends of the plurality of second water pumps (4021) are fixedly connected to an output pipe (4022) and the water inlet pipe (413) and the output pipe (4022) are fixedly connected via a fourth bolt, and the input ends of the plurality of second water pumps (4021) are fixedly connected to an input pipe (4023) and the second pipeline (4015) and the input pipe (4023) are fixedly connected via a fifth bolt.

4. A special ceramic membrane purification equipment for tunnel construction wastewater according to claim 1, characterized in that: The backwash unit (5) comprises a purification box (501), the purification box (501) is fixedly connected to the other side of the top of the second support frame (3), and the water outlet pipe (412) is fixedly connected to the purification box (501), and the bottom of the purification tank (403) is fixedly sleeved with a sealing sleeve (502).

5. A special ceramic membrane purification equipment for tunnel construction wastewater according to claim 4, characterized in that: Two high-pressure nozzles (503) are fixedly sleeved on the inner wall of the purification tank (403), and the positions of the high-pressure nozzles (503) and the ceramic microfiltration membrane (407) correspond to each other. The bottoms of the two high-pressure nozzles (503) are fixedly connected to a third pipe (505) through a high-pressure water pump (504), and the third pipe (505) is fixedly connected to the bottom of the purification box (501).

6. A special ceramic membrane purification equipment for tunnel construction wastewater according to claim 1, characterized in that: The collecting unit (6) comprises a conveying pipe (601), the conveying pipe (601) is movably sleeved on the bottom inner wall of an I-shaped sleeve (405), the top inner wall of the I-shaped sleeve (405) is fixedly sleeved with a limit ring (602), the inner wall of the conveying pipe (601) is fixedly sleeved with an auger (603), and one end of the auger (603) extends to the inner wall of the I-shaped sleeve (405), one end of the auger (603) is fixedly connected with a fixing ring (604), a transmission ring (605) is movably connected between the fixing ring (604) and the limit ring (602), and a blocking plate (606) is slidably connected between the fixing ring (604) and the transmission ring (605) via a first latch.

7. A special ceramic membrane purification device for tunnel construction wastewater according to claim 6, characterized in that: A plurality of ratchet teeth (607) are fixedly connected to the inner wall of the top of the I-shaped sleeve (405), and the ratchet teeth (607) are distributed in a ring array. A plurality of ratchet pawls (608) are movably connected to the side surface of the transmission ring (605) through a first insertion rod, and the ratchet teeth (607) are meshedly connected to the ratchet pawls (608). A first spring (609) is fixedly connected to one side of each ratchet pawl (608) in a symmetrical structure, and the first spring (609) is fixedly connected to the transmission ring (605).

8. A special ceramic membrane purification device for tunnel construction wastewater according to claim 7, characterized in that: The bottom of the delivery pipe (601) is fixedly connected to a collection box (610), and a filter box (611) is slidably connected inside the collection box (610). The bottom of the collection box (610) is fixedly connected to a return pipe (613) via a valve (612), and the return pipe (613) is fixedly connected to the input pipe (4023) via a sixth bolt.

9. The treatment process of a special ceramic membrane purification device for tunnel construction wastewater according to claim 8 is characterized in that: The following steps are involved: S1. Wastewater pretreatment: Tunnel construction wastewater is first pretreated, wherein a screen is usually used to remove larger particles of suspended matter and sediment. After pretreatment, the first pipe (4013) is installed at the wastewater channel output port, and the first pipe (4013) is sealed with the channel output port by other sealing means to prevent wastewater from flowing out; S2, ceramic membrane purification; S2.1, wastewater heating treatment: first, the electric heater (4014) is operated through an external circuit mechanism to increase the temperature in the treatment box (4011) to meet the standard, and the U-shaped tube (4012) is made of aluminum alloy, which has good corrosion resistance and heat conduction function, so as to increase the temperature of the U-shaped tube (4012), and then the external control system is used to make a plurality of second water pumps (4021) work at the same time, and the wastewater flows from the first pipeline (4013) into the U-shaped tube (4012). After the heating treatment, the wastewater can be prevented from freezing in extremely cold weather or plateau areas and unable to be purified; S2.2, ceramic membrane filtration treatment: after the wastewater is heated, the wastewater is caused to flow from the water inlet pipe (413) into the purification tank (403) through the second water pump (4021). At this time, the plurality of baffles (606) are in a closed state, and the wastewater is filtered through the ceramic microfiltration membrane (407). Dirt is retained at the input port of the ceramic microfiltration membrane (407), which will cause the ceramic microfiltration membrane (407) to be blocked, thereby reducing the flow rate of the wastewater. The first motor (409) can be used to drive the first gear (410) through an external circuit mechanism. The first gear (410) is meshed with the outer gear ring (408) to rotate the I-shaped sleeve (405), so that part of the blockage can be discharged from the ceramic microfiltration membrane (407). After the wastewater is filtered, the purified water flows from the water outlet pipe (412) through the first water pump (411) into the purification box (501), and then passes through the ultraviolet lamp tube inside the purification box (501) to disinfect the purified water; S2.3, ceramic membrane backwashing treatment: After the wastewater is purified, the water in the purification box (501) is first sprayed out from the high-pressure nozzle (503) through the high-pressure water pump (504) through the external control system. At this time, the I-shaped sleeve (405) is driven to rotate by the first motor (409), and the plurality of baffles (606) are in a closed state. The ceramic microfiltration membrane (407) is backwashed to make the dirt inside it spray out from the input end. Then, the I-shaped sleeve (405) is driven to rotate in the opposite direction by the first motor (409). The plurality of baffles (606) are in an open state through the unidirectional rotation structure, and the wastewater and dirt flow out from it. The mixed liquid flows into the I-shaped sleeve (405) and flows on the auger (603), wherein the liquid flows faster than the solid flow, so that part of the liquid and the dirt are separated. The I-shaped sleeve (405) is then driven to rotate by the first motor (409). After passing through the one-way structure, the plurality of baffles (606) are still in an open state, and the dirt contacts the inner wall of the I-shaped sleeve (405), flows downward on the auger (603), passes through the delivery pipe (601) and enters the filter box (611), so that the solid and liquid are separated. The separated liquid flows into the input pipe (4023) through the return pipe (613) through the valve (612) for re-purification. S3, sludge treatment, the sludge is precipitated inside the filter box (611), and the sludge is transported to a designated location through an external transport device.

Images