Wastewater treatment equipment and method for chip production line

Abstract

The invention relates to the technical field of wastewater treatment, and discloses wastewater treatment equipment and method for a chip production line, the wastewater treatment equipment comprises a unit reaction tank, a plurality of precipitation cavities which are vertically communicated are formed by arranging a plurality of separation filter discs in a tank body in an overlapped manner, wastewater reacts and precipitates in each precipitation cavity, and precipitates can be discharged from a central pipe; according to the wastewater treatment method provided by the invention, a plurality of unit reaction tanks are connected in series, the pH value of each unit reaction tank can be differentially adjusted, each unit reaction tank has an automatic sludge discharge function, and the wastewater treatment efficiency is greatly improved. The device has the function of controlling the sludge discharge rhythm through the flow rate, overcomes the problems of large sludge amount and unstable water outlet in mixed treatment of fluorine-containing wastewater, phosphorus-containing wastewater and grinding wastewater, meets the requirement of dynamically controlling wastewater treatment, and is more convenient and reliable to use.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and in particular to a wastewater treatment device and method for a chip production line. Background Art

[0002] The chip production wastewater mainly includes ammonia-containing wastewater, fluorine-containing wastewater, phosphorus-containing wastewater, grinding wastewater and acid-base wastewater. By classifying, collecting and treating the wastewater separately, the purpose of achieving the total discharge standard of chip wastewater and the reuse of wastewater can be achieved. In the prior art, the patent document with the announcement number CN118637695B discloses a wastewater treatment device and method capable of wastewater reuse, including a composite mechanism. Through the composite mechanism design, the motor controls the central shaft to rotate, so that the stirring plate stirs the wastewater, thereby improving the aeration efficiency and accelerating the material reaction speed, thereby achieving the effect of precipitating impurities. By opening a streamlined groove, the rotation resistance is reduced, the rotation resistance in the liquid is reduced, the energy consumption is reduced, the rotation efficiency is improved, and the stability is enhanced. The design of the groove can improve the water flow distribution of the object in motion, thereby increasing stability, reducing shaking and bumps, and improving the stability of the structure. After the wastewater is filtered through the grid plate, it is discharged from the pipe on the side of the composite shell close to the bottom, which is convenient for subsequent treatment. Impurities and waste are discharged from the pipe on the side close to the rotating mechanism.

[0003] The treatment of fluorine-containing wastewater, phosphorus-containing wastewater and grinding wastewater is very similar. From the perspective of saving investment, the same wastewater treatment device can be used to treat the three wastewaters at the same time. Because a large amount of CaCl2 and an appropriate amount of flocculant need to be added during the process to promote the precipitation of wastewater, the pH value needs to be adjusted at different reaction stages. For example, the pH value of fluorine-containing wastewater is adjusted to about 6-7. During the treatment of phosphorus-containing wastewater, the pH of the primary reaction tank is adjusted to about 5-6, the pH of the secondary reaction tank is adjusted to 8.5-9, and the pH of the tertiary reaction tank is adjusted to 9-9.5. Multi-stage treatment ensures the complete generation of hydroxy calcium phosphate. This requires the wastewater treatment device to have many reaction chambers to grade the wastewater. The reaction chambers are connected and can discharge the precipitate in time to ensure the stability of the effluent and operation. Based on this, the existing wastewater treatment equipment is designed as a multi-reaction chamber structure, which has the problems of difficult sludge discharge, easy clogging, unstable effluent, low wastewater treatment efficiency, and inconvenient use. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art that the wastewater treatment equipment is designed as a multi-reaction chamber structure, which has difficulty in sludge discharge, easy clogging, and unstable water output, and to propose a wastewater treatment equipment and method for a chip production line.

[0005] To achieve the above object, the present invention adopts the following technical solution: A wastewater treatment device for a chip production line, including a unit reaction tank. The unit reaction tank includes a tank body, and a shunt sleeve is fixedly installed inside the tank body. The shunt sleeve divides the inner cavity of the tank body into upper and lower chambers. A plurality of drainage holes are opened at the bottom of the shunt sleeve, and a stirring assembly is arranged in the upper chamber of the tank body.

[0006] A central tube is fixedly installed inside the shunt sleeve. A plurality of partition filter discs are slidably sleeved on the surface of the central tube. The plurality of partition filter discs are stacked together. A precipitation chamber is formed between two adjacent partition filter discs. A plurality of diversion openings are opened on the surface of the central tube. Each precipitation chamber communicates with the inner cavity of the central tube through the diversion openings. A plurality of magnetic rings are fixedly installed on the surface of the central tube. The magnetic rings apply an upward force to the partition filter discs, causing the partition filter discs to move upward and abut against the lower surface of the upper magnetic ring, and the inner wall of the partition filter disc blocks the diversion openings.

[0007] An input pipe, an adjustment pipe, and a sampling pipe that communicate with the upper chamber of the tank body are fixedly installed on the outer wall of the tank body. Two chemical addition pipes are fixedly installed on the top of the tank body. A waste discharge pipe that communicates with the inner cavity of the central tube, and an output pipe that communicates with the lower chamber of the tank body are fixedly installed at the bottom of the tank body. A plurality of partition filter discs are stacked inside the tank body to form a plurality of vertically connected precipitation chambers. The wastewater reacts and precipitates in each precipitation chamber, and the precipitate can be discharged through the central tube, ensuring the stability of the water output from the partition filter discs.

[0008] Preferably, the partition filter disc includes an inner ring, a filter plate, and an outer ring. The inner ring and the outer ring are both fixedly connected to the filter plate. The inner ring is slidably sleeved on the surface of the central tube. When the partition filter disc moves up and down, the inner ring covers or moves away from the diversion opening, realizing the opening and closing of the diversion opening.

[0009] Among them, a connection ring is fixedly installed on the upper surface of the filter plate. When two adjacent partition filter discs are stacked, the outer ring of the upper partition filter disc can be sleeved outside the connection ring of the lower partition filter disc. The precipitation chamber refers to the area between two adjacent filter plates above and below. The upper and lower precipitation chambers communicate through the filter holes of the filter plate, realizing the hierarchical treatment of the wastewater. Each precipitation chamber communicates and can discharge the precipitate in time, ensuring the stability of the water output and operation.

[0010] Preferably, the shunt sleeve has an upward opening structure. The outer wall of the partition filter disc located inside the shunt sleeve is in sliding contact with the inner wall of the shunt sleeve. The outer wall of the partition filter disc located above the shunt sleeve and the inner wall of the tank body form an annular mixing chamber.

[0011] The stirring assembly includes a stirring rod. The stirring rod is arranged in the mixing chamber. A driving motor is fixedly installed on the upper side of the tank body. The driving motor drives the stirring rod to move in a circular motion in the mixing chamber. During the pH value adjustment and chemical addition process, the stirring assembly stirs the wastewater to make it mix more quickly.

[0012] Preferably, a rotating sleeve is rotatably installed at the bottom end of the central pipe. A first propeller blade is fixedly installed on the outer side of the rotating sleeve, and a second propeller blade is fixedly installed on the inner side of the rotating sleeve. An installation ring is fixedly installed on the lower surface of the flow dividing sleeve. An induction coil is arranged inside the installation ring. The upper end of the rotating sleeve is arranged inside the installation ring, and a plurality of magnetic blocks are embedded in the upper end of the rotating sleeve. An electromagnetic coil is embedded inside the magnetic force ring. The induction coil is electrically connected to the electromagnetic coil. The inner ring is made of a magnetic material. The electromagnetic coil generates an electromagnetic field that attracts or repels the inner ring, so that the rotation speed of the rotating sleeve is positively correlated with the magnitude of the magnetic force of the magnetic force ring, thereby achieving the effect of controlling the sludge discharge rhythm by regulating the flow rate.

[0013] When the precipitates coalescing on the upper side of the separation filter disc become more and more, the weight of the precipitates presses down the separation filter disc to overcome the magnetic repulsion of the magnetic force ring, driving the separation filter disc to move downward, opening the diversion port. The precipitates enter the central pipe with the wastewater and are discharged. After the precipitates on the separation filter disc are discharged, the weight is reduced, and the separation filter disc moves upward to close the diversion port, realizing the automatic opening and closing of the diversion port.

[0014] The present invention also proposes a method for treating wastewater in a chip production line, including the following steps:

[0015] S1. Input of wastewater: The wastewater is introduced into the tank through the input pipe at a fixed flow rate to ensure that the wastewater submerges the uppermost separation filter disc.

[0016] S2. Adjustment of pH: The acid-base dilution solution is introduced into the tank through the adjustment pipe at a fixed flow rate, and the pH value of the wastewater is sampled and detected through the sampling pipe.

[0017] S3. Adding medicine: The CaCl2 solution and the flocculant are transported into the tank through the medicine adding pipe.

[0018] S4. Automatic sludge discharge: The wastewater flows from top to bottom and passes through each separation filter disc. The water-insoluble precipitates generated after adding medicine to the wastewater coalesce on the separation filter disc to form sludge. When the amount of sludge reaches a certain amount, the weight of the sludge presses down the separation filter disc to overcome the magnetic repulsion of the magnetic force ring, driving the separation filter disc to move downward, opening the diversion port. The sludge enters the central pipe with the wastewater and is then discharged through the waste discharge pipe. After being filtered by each separation filter disc, the generated filtrate is discharged through the output pipe for subsequent treatment.

[0019] Preferably, in the process of S4, an external power source is introduced into the electromagnetic coil, and the electromagnetic coil generates alternating magnetic repulsion and magnetic attraction forces to drive the separation filter plate to move up and down reciprocally, and the wastewater blows back the filter holes on the separation filter plate to clean the blockages in the filter holes.

[0020] The present invention has the following beneficial effects:

[0021] 1. The wastewater treatment equipment proposed by the present invention forms a plurality of precipitation chambers that communicate up and down by arranging a plurality of partition filter plates stacked in the tank body. The wastewater reacts and precipitates in each precipitation chamber, and the precipitate can be discharged through the central pipe, ensuring the stability of the water outlet of the partition filter plate, solving the problems of difficult sludge discharge and easy blockage in the structural design of multiple reaction chambers, and greatly improving the efficiency of wastewater treatment.

[0022] 2. The wastewater treatment equipment proposed by the present invention is provided with a magnetic ring on the surface of the central pipe. The magnetic ring exerts an upward force on the partition filter plate, driving the partition filter plate to float and close the diversion port. When the precipitate accumulating on the upper side of the partition filter plate becomes more and more, the weight of the precipitate overcomes the magnetic repulsion force of the magnetic ring and presses down the partition filter plate, driving the partition filter plate to move downward, opening the diversion port, and the precipitate enters the central pipe along with the wastewater and is discharged. Due to the different amounts of precipitate on each partition filter plate, the function of automatically discharging sludge for each partition filter plate is realized.

[0023] 3. The wastewater treatment equipment proposed by the present invention is provided with a rotating sleeve at the bottom end of the central pipe. The inner and outer sides of the rotating sleeve are provided with a first propeller blade and a second propeller blade for driving its rotation. When the rotating sleeve rotates, the induced current generated by the induction coil cutting the magnetic field of the magnetic block is introduced into the electromagnetic coil in the magnetic ring, so that the rotation speed of the rotating sleeve is positively correlated with the magnitude of the magnetic force of the magnetic ring, thereby realizing the effect of controlling the sludge discharge rhythm by regulating the flow rate. In this design, when the sludge on the partition filter plate becomes more and more, the resistance to the wastewater gradually increases, the flow rate in the tank gradually decreases, and the linkage diversion port gradually opens to discharge the sludge in time. After the sludge is discharged, the flow rate in the tank increases, and the linkage diversion port closes, avoiding the situation that the sludge accumulates more and more and causes complete blockage, ensuring the stable operation of the equipment. Especially in the series application of multiple unit reaction tanks, the resistances and flow rates in each unit reaction tank are different, and the timing of sludge discharge is also different. By controlling the sludge discharge rhythm through the flow rate in each unit reaction tank, the stable operation of the equipment can be better ensured.

[0024] 4. The wastewater treatment method proposed by the present invention is applicable to the series application of multiple unit reaction tanks, and can differentially adjust the pH value of each unit reaction tank. Since each unit reaction tank has the function of automatically discharging sludge and the function of controlling the sludge discharge rhythm by the flow rate, it overcomes the problems of large sludge volume and unstable water outlet in the mixed treatment of fluoride-containing wastewater, phosphorus-containing wastewater and grinding wastewater, making it meet the requirements of dynamically controlling wastewater treatment and being more convenient and reliable to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a three-dimensional structural schematic diagram of the wastewater treatment equipment proposed by the present invention;

[0026] Figure 2 is a three-dimensional structural schematic diagram of the unit reaction tank proposed by the present invention Figure 1 ;

[0027] Figure 3 Schematic diagram of the three-dimensional structure of the unit reaction tank proposed by the present invention Figure 2 ;

[0028] Figure 4 Schematic diagram of the front sectional structure of the tank body proposed by the present invention;

[0029] Figure 5 is Figure 4 Enlarged schematic diagram of the partial structure;

[0030] Figure 6 Schematic diagram of the three-dimensional structure of the flow splitting sleeve proposed by the present invention;

[0031] Figure 7 Schematic diagram of the three-dimensional structure of the partition filter disk proposed by the present invention Figure 1 ;

[0032] Figure 8 Schematic diagram of the three-dimensional structure of the partition filter disk proposed by the present invention Figure 2 .

[0033] In the figure: 1 tank body, 2 flow splitting sleeve, 3 drainage holes, 4 central pipe, 5 partition filter disk, 6 diversion port, 7 magnetic ring, 8 input pipe, 9 regulating pipe, 10 sampling pipe, 11 chemical addition pipe, 12 waste discharge pipe, 13 output pipe, 14 inner ring, 15 filter plate, 16 outer ring, 17 connecting ring, 18 stirring rod, 19 driving motor, 20 rotating sleeve, 21 first propeller blade, 22 second propeller blade, 23 induction coil, 24 magnetic block. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0035] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0036] Referring to Figures 1 - 8 , a wastewater treatment device for a chip production line includes a unit reaction tank. The unit reaction tank includes a tank body 1. A flow splitting sleeve 2 is fixedly installed inside the tank body 1. The flow splitting sleeve 2 divides the inner cavity of the tank body 1 into upper and lower chambers. A plurality of drainage holes 3 are opened at the bottom of the flow splitting sleeve 2. A stirring assembly is arranged in the upper chamber of the tank body 1.

[0037] A central tube 4 is fixedly installed inside the flow dividing sleeve 2. A plurality of partition filter disks 5 are slidably sleeved on the surface of the central tube 4. The plurality of partition filter disks 5 are stacked together, and a precipitation chamber is formed between two adjacent partition filter disks 5. A plurality of diversion openings 6 are formed on the surface of the central tube 4. Each precipitation chamber communicates with the inner cavity of the central tube 4 through the diversion opening 6. A plurality of magnetic rings 7 are fixedly installed on the surface of the central tube 4. The magnetic rings 7 exert an upward acting force on the partition filter disks 5, causing the partition filter disks 5 to move upward and abut against the lower surface of the upper magnetic ring 7, and the inner wall of the partition filter disk 5 seals the diversion opening 6.

[0038] An input pipe 8, a regulating pipe 9, and a sampling pipe 10 that communicate with the upper chamber of the tank body 1 are fixedly installed on the outer wall of the tank body 1. Two chemical adding pipes 11 are fixedly installed on the top of the tank body 1. A waste discharging pipe 12 that communicates with the inner cavity of the central tube 4 is fixedly installed at the bottom of the tank body 1, and an output pipe 13 that communicates with the lower chamber of the tank body 1.

[0039] In this embodiment, as Figure 7 、 Figure 8 shown, the partition filter disk 5 includes an inner ring 14, a filter plate 15, and an outer ring 16. The inner ring 14 and the outer ring 16 are both fixedly connected to the filter plate 15. The inner ring 14 is slidably sleeved on the surface of the central tube 4. When the partition filter disk 5 moves up and down, the inner ring 14 covers or moves away from the diversion opening 6 to realize the opening and closing of the diversion opening 6. Figure 7 shown, the diversion opening 6 is in a closed state. Figure 8 shown, the diversion opening 6 is in an open state.

[0040] A connection ring 17 is fixedly installed on the upper surface of the filter plate 15. When two upper and lower partition filter disks 5 are stacked, the outer ring 16 of the upper partition filter disk 5 can be sleeved outside the connection ring 17 of the lower partition filter disk 5. The precipitation chamber refers to the area between two adjacent upper and lower filter plates 15. The upper and lower precipitation chambers communicate through the filter holes of the filter plate 15.

[0041] Refer to Figure 4 、 Figure 6 , the flow dividing sleeve 2 has an upper opening structure. The outer wall of the partition filter disk 5 located inside the flow dividing sleeve 2 is in sliding contact with the inner wall of the flow dividing sleeve 2. The outer wall of the partition filter disk 5 located above the flow dividing sleeve 2 and the inner wall of the tank body 1 form an annular mixing chamber. Among them, the stirring assembly includes a stirring rod 18. The stirring rod 18 is arranged in the mixing chamber. A driving motor 19 is fixedly installed on the upper side of the tank body 1. The driving motor 19 drives the stirring rod 18 to move in a circular motion in the mixing chamber.

[0042] In this embodiment, for details, refer to Figure 5, a rotating sleeve 20 is rotatably installed at the bottom end of the central pipe 4. A first propeller blade 21 is fixedly installed on the outer side of the rotating sleeve 20, and a second propeller blade 22 is fixedly installed on the inner side of the rotating sleeve 20. An installation ring is fixedly installed on the lower surface of the shunt sleeve 2. An induction coil 23 is arranged inside the installation ring. The upper end of the rotating sleeve 20 is arranged inside the installation ring, and a plurality of magnetic blocks 24 are embedded at the upper end of the rotating sleeve 20. An electromagnetic coil is embedded inside the magnetic force ring 7. The induction coil 23 is electrically connected to the electromagnetic coil. The inner ring 14 is made of a magnetic material. After the electromagnetic coil is energized, the electromagnetic coil generates an electromagnetic field that attracts or repels the inner ring 14.

[0043] During the use process, refer to Figure 4 , after the tank body 1 is filled with waste water, the waste water enters from the uppermost separation filter disc 5, passes through each layer of filter plates 15 from top to bottom, and then is discharged from the output pipe 13. The waste water drives the first propeller blade 21 to rotate, and the rotating sleeve 20 rotates accordingly. At this time, the induction coil 23 cuts the magnetic field of the magnetic block 24 to generate an induced current. This induced current is processed by an amplifier circuit and introduced into the electromagnetic coil inside the magnetic force ring 7. The electromagnetic coil is energized, and the electromagnetic coil generates a magnetic force with a changing magnitude, driving the separation filter disc 5 to move up and down. The amplifier circuit is common knowledge in electricity and will not be introduced in detail here.

[0044] When there is too much waste water in the tank body 1, it can enter from the upper port of the central pipe 4 and then be discharged from the waste discharge pipe 12.

[0045] When the sediment accumulated on the upper side of the separation filter disc 5 becomes more and more, the weight of the sediment overcomes the magnetic repulsion force of the magnetic force ring 7 and presses down the separation filter disc 5, driving the separation filter disc 5 to move downward, so that the diversion port 6 is opened. As Figure 8 shown, the sediment enters the central pipe 4 along with the waste water through the diversion port 6 and is discharged.

[0046] It should be noted that when the waste water and sediment in the central pipe 4 flow downward and are discharged, the second propeller blade 22 is driven to rotate, increasing the rotation speed of the rotating sleeve 20. At this time, the induced current generated by the induction coil 23 increases accordingly, so that the magnetic force ring 7 exerts an increased upward force on the separation filter disc 5, driving the separation filter disc 5 to move upward to block the diversion port 6. The separation filter disc 5 moves up and down reciprocally, realizing the automatic opening and closing of the diversion port 6.

[0047] By arranging the magnetic force ring 7 on the surface of the central pipe 4, the magnetic force ring 7 exerts an upward force on the separation filter disc 5, driving the separation filter disc 5 to float upward to close the diversion port 6. When the sediment accumulated on the upper side of the separation filter disc 5 becomes more and more, the weight of the sediment overcomes the magnetic repulsion force of the magnetic force ring 7 and presses down the separation filter disc 5, driving the separation filter disc 5 to move downward, so that the diversion port 6 is opened. The sediment enters the central pipe 4 along with the waste water through the diversion port 6 and is discharged. Since the amount of sediment on each separation filter disc 5 is different, the function of automatically discharging sludge for each separation filter disc 5 is realized.

[0048] It should be noted that with reference to Figure 8 , when the partition filter disc 5 moves downward, the diversion port 6 opens by a large margin. At this time, the upper outer ring 16 is separated from the lower connecting ring 17, forming an inlet gap. Compared with the wastewater passing through the filter plate 15, the resistance at the inlet gap is such that the wastewater on the outside enters the sedimentation chamber through the above-mentioned inlet gap, pushing the sediment on the filter plate 15 to move horizontally and enter the central pipe 4, ensuring that the discharge of the sediment is faster and more reliable.

[0049] By providing a rotating sleeve 20 at the bottom end of the central pipe 4, with a first propeller blade 21 and a second propeller blade 22 for driving its rotation provided on the inner and outer sides of the rotating sleeve 20, when the rotating sleeve 20 rotates, the induced current generated by the induction coil 23 cutting the magnetic field of the magnetic block 24 is introduced into the electromagnetic coil in the magnetic force ring 7, making the rotation speed of the rotating sleeve 20 positively correlated with the magnitude of the magnetic force of the magnetic force ring 7. Thus, the effect of controlling the sludge discharge rhythm by regulating the flow rate is achieved. In this design, when the sludge on the partition filter disc 5 becomes more and more, the resistance to the wastewater gradually increases, the flow rate in the tank body 1 gradually decreases, the linkage diversion port 6 gradually opens, and the sludge is discharged in a timely manner. After the sludge is discharged, the flow rate in the tank body 1 increases, and the linkage diversion port 6 closes, avoiding the situation where the sludge accumulates more and more and causes complete blockage, ensuring the stable operation of the equipment.

[0050] The present invention also proposes a method for treating wastewater in a chip production line, including the following steps:

[0051] S1. Input of wastewater: The wastewater is introduced into the tank body 1 through the input pipe 8 at a fixed flow rate, ensuring that the wastewater submerges the uppermost partition filter disc 5.

[0052] S2. Adjustment of pH: The acid-base dilution solution is introduced into the tank body 1 through the adjustment pipe 9 at a fixed flow rate, and the stirring assembly stirs the wastewater. The pH value of the wastewater is sampled and detected through the sampling pipe 10. The acid-base dilution solution includes sulfuric acid dilution solution and sodium hydroxide dilution solution, which can adjust the pH value of the wastewater. This belongs to common knowledge and will not be elaborated here.

[0053] S3. Adding medicine: CaCl2 solution and flocculant are transported into the tank body 1 through the medicine adding pipe 11, and the stirring assembly stirs the wastewater to make the liquid medicine mix evenly.

[0054] S4. Automatic sludge discharge: The wastewater after adding medicine flows from top to bottom and passes through each partition filter disc 5. The water-insoluble sediment generated after adding medicine to the wastewater coalesces on the partition filter disc 5 to form sludge. After the sludge reaches a certain amount, the weight of the sludge overcomes the magnetic repulsion force of the magnetic force ring 7 to press down the partition filter disc 5, driving the partition filter disc 5 to move downward, opening the diversion port 6. The sludge enters the central pipe 4 along with the wastewater through the diversion port 6, and then is discharged through the waste discharge pipe 12. After being filtered by each partition filter disc 5, the generated filtrate is discharged through the output pipe 13 for subsequent treatment.

[0055] During the process of S4, an electromagnetic coil is introduced through an external power supply. The electromagnetic coil generates alternating magnetic repulsive force and magnetic attractive force, driving the partition filter plate 15 to reciprocate up and down. The wastewater backwashes the filter holes on the partition filter plate 15 to clean the blockages in the filter holes.

[0056] During use, as Figure 1 shown, multiple unit reaction tanks are connected in series through pumping pipelines. Acid-base dilution solutions with different concentrations are respectively introduced into the introduction tank 1 through the regulating pipe 9 to differentially adjust the pH values of each unit reaction tank, so that the wastewater in each unit reaction tank has different pH values. Then, chemicals are added for reaction to remove heavy metal ions and some suspended solids in the wastewater. Since each unit reaction tank has the function of automatic sludge discharge and the function of controlling the sludge discharge rhythm by the flow rate, especially in the series application of multiple unit reaction tanks, the resistances and flow rates in each unit reaction tank are different, and the timing of sludge discharge is also different. By controlling the sludge discharge rhythm through the flow rate in each unit reaction tank, the stable operation of the equipment can be better ensured, overcoming the problems of large amount of sludge and unstable effluent in the mixed treatment of fluorine-containing wastewater, phosphorus-containing wastewater and grinding wastewater, meeting the requirements of dynamic control of wastewater treatment, and being more convenient and reliable to use.

[0057] The wastewater treatment equipment proposed by the present invention forms a plurality of precipitation chambers that communicate up and down by arranging a plurality of partition filter discs 5 stacked in the tank 1. The wastewater reacts and precipitates in each precipitation chamber, and the precipitate can be discharged through the central pipe 4, ensuring the stability of the water outlet of the partition filter disc 5, solving the problems of difficult sludge discharge and easy blockage in the structural design of multiple reaction chambers, and greatly improving the efficiency of wastewater treatment.

[0058] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A wastewater treatment device for a chip production line, comprising a unit reaction tank, characterized in that: The unit reaction tank includes a tank body (1), and a flow splitting sleeve (2) is fixedly installed inside the tank body (1). The flow splitting sleeve (2) divides the inner cavity of the tank body (1) into upper and lower chambers. A plurality of drainage holes (3) are formed at the bottom of the flow splitting sleeve (2). A stirring assembly is arranged in the upper chamber of the tank body (1). A central pipe (4) is fixedly installed inside the flow splitting sleeve (2). A plurality of partition filter discs (5) are slidably sleeved on the surface of the central pipe (4). The plurality of partition filter discs (5) are stacked together. A precipitation chamber is formed between two adjacent partition filter discs (5). A plurality of diversion openings (6) are formed on the surface of the central pipe (4). Each precipitation chamber communicates with the inner cavity of the central pipe (4) through the diversion opening (6). A plurality of magnetic rings (7) are fixedly installed on the surface of the central pipe (4). The magnetic rings (7) apply an upward acting force on the partition filter discs (5), causing the partition filter discs (5) to move upward and abut against the lower surface of the upper magnetic ring (7), and the inner wall of the partition filter disc (5) blocks the diversion opening (6). An input pipe (8), a regulating pipe (9) and a sampling pipe (10) which are communicated with the upper chamber of the tank body (1) are fixedly installed on the outer wall of the tank body (1). Two chemical addition pipes (11) are fixedly installed at the top of the tank body (1). A waste discharge pipe (12) which is communicated with the inner cavity of the central pipe (4) is fixedly installed at the bottom of the tank body (1), and an output pipe (13) which is communicated with the lower chamber of the tank body (1).

2. The wastewater treatment equipment for a chip production line according to claim 1, characterized in that: The partition filter disc (5) includes an inner ring (14), a filter plate (15) and an outer ring (16). The inner ring (14) and the outer ring (16) are both fixedly connected to the filter plate (15). The inner ring (14) is slidably sleeved on the surface of the central pipe (4). When the partition filter disc (5) moves up and down, the inner ring (14) covers or moves away from the diversion opening (6) to realize the opening and closing of the diversion opening (6).

3. The wastewater treatment equipment for a chip production line according to claim 2, characterized in that: A connecting ring (17) is fixedly installed on the upper surface of the filter plate (15). When two adjacent partition filter discs (5) are stacked, the outer ring (16) of the upper partition filter disc (5) can be sleeved outside the connecting ring (17) of the lower partition filter disc (5). The precipitation chamber refers to the area between two adjacent upper and lower filter plates (15). The upper and lower precipitation chambers are communicated through the filter holes of the filter plate (15).

4. The wastewater treatment equipment for a chip production line according to claim 3, characterized in that: The flow splitting sleeve (2) has an upward opening structure. The outer wall of the partition filter disc (5) located inside the flow splitting sleeve (2) is in sliding contact with the inner wall of the flow splitting sleeve (2). The outer wall of the partition filter disc (5) located above the flow splitting sleeve (2) and the inner wall of the tank body (1) form an annular mixing chamber.

5. The wastewater treatment equipment for a chip production line according to claim 4, characterized in that: The stirring assembly includes a stirring rod (18). The stirring rod (18) is arranged in the mixing chamber. A driving motor (19) is fixedly installed above the tank body (1). The driving motor (19) drives the stirring rod (18) to move in a circular motion in the mixing chamber.

6. The wastewater treatment equipment for a chip production line according to claim 5, characterized in that: A rotating sleeve (20) is rotatably installed at the bottom end of the central tube (4). A first propeller blade (21) is fixedly installed on the outer side of the rotating sleeve (20), and a second propeller blade (22) is fixedly installed on the inner side of the rotating sleeve (20). An installation ring is fixedly installed on the lower surface of the flow splitting sleeve (2). An induction coil (23) is arranged in the installation ring. The upper end of the rotating sleeve (20) is arranged in the installation ring, and a plurality of magnetic blocks (24) are embedded in the upper end of the rotating sleeve (20). An electromagnetic coil is embedded in the magnetic force ring (7). The induction coil (23) is electrically connected to the electromagnetic coil. The inner ring (14) is made of a magnetic material, and the electromagnetic coil generates an electromagnetic field that attracts or repels the inner ring (14).

7. The wastewater treatment equipment for a chip production line according to claim 6, characterized in that: When the sediment accumulated on the upper side of the separation filter disc (5) becomes more and more, the weight of the sediment presses down the separation filter disc (5) against the magnetic repulsion force of the magnetic force ring (7), driving the separation filter disc (5) to move downward, opening the diversion port (6), and the sediment enters the central tube (4) along with the wastewater and is discharged away.

8. A method for treating wastewater in a chip production line, which uses the wastewater treatment equipment for a chip production line described in claim 7 to treat the wastewater, characterized in that, It includes the following steps: S1. Input of wastewater: The wastewater is introduced into the tank body (1) from the input pipe (8) at a fixed flow rate to ensure that the wastewater submerges the uppermost separation filter disc (5). S2. Adjustment of pH: The acid-base dilution solution is introduced into the tank body (1) from the adjustment pipe (9) at a fixed flow rate, and the pH value of the wastewater is sampled and detected through the sampling pipe (10). S3. Chemical addition: The CaCl2 solution and the flocculant are transported into the tank body (1) from the chemical addition pipe (11). S4. Automatic sludge discharge: The wastewater flows from top to bottom and passes through each separation filter disc (5). The insoluble sediment generated after the wastewater is chemically added coalesces on the separation filter disc (5) to form sludge. After the sludge volume reaches a certain amount, the weight of the sludge presses down the separation filter disc (5) against the magnetic repulsion force of the magnetic force ring (7), driving the separation filter disc (5) to move downward, opening the diversion port (6). The sludge enters the central tube (4) along with the wastewater and is then discharged away through the waste discharge pipe (12). After being filtered by each separation filter disc (5), the generated filtrate is discharged away through the output pipe (13) for subsequent treatment.

9. A method for treating wastewater in a chip production line according to claim 8, characterized in that: During the S4 process, an electromagnetic coil is introduced through an external power source, and the electromagnetic coil generates alternating magnetic repulsion and magnetic attraction forces to drive the separation filter plate (15) to reciprocate up and down, and the wastewater blows back the filter holes on the separation filter plate (15) to clean the blockages in the filter holes.

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