Pharmaceutical wastewater treatment process and filtration equipment thereof

Abstract

The application belongs to the technical field of wastewater treatment, in particular to a pharmaceutical wastewater treatment process and a filtering equipment thereof; S1, pharmaceutical wastewater is introduced into a wastewater station through a wastewater pipe network, and most of floating matter and large-particle suspended matter in the wastewater is removed by a filtering equipment and discharged into a water collecting well, wherein the filtering equipment comprises a filter, a filter plate is fixedly connected inside the filter, a filter groove is arranged inside the filter plate, a limiting plate is fixedly connected to the upper surface of the filter plate, a moving plate is slidably arranged on one side of the limiting plate, a first scraper is fixedly connected to the lower surface of the moving plate, and a second scraper is slidably connected to one side of the first scraper; the effluent of the sedimentation tank is filtered through a membrane assembly with micron pore size, so that the suspended matter in the effluent meets the standard, the effluent is clear, and 99% of coliform bacteria can be removed at the same time.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of wastewater treatment, and particularly relates to a pharmaceutical wastewater treatment process and a filtering equipment thereof. BACKGROUND

[0002] In the production of traditional Chinese medicine pharmaceutical enterprises, wastewater is generated in multiple links, mainly including medicinal material cleaning wastewater, decoction wastewater, extraction wastewater, equipment cleaning wastewater and preparation production wastewater. The medicinal material cleaning wastewater is generated in the preliminary treatment stage of medicinal materials, and the medicinal materials need to be cleaned to remove the soil, sand and other impurities on the surface. The wastewater contains a large amount of suspended solids, animal and plant oils and other impurities. The decoction wastewater is generated in the decoction process of medicinal materials, and the effective components of medicinal materials are dissolved in water, and a large amount of wastewater is generated. The wastewater contains high-concentration organic matters such as sugars, organic acids, proteins, cellulose and lignin. The extraction wastewater is generated in the extraction process of medicinal materials such as salvia miltiorrhiza and toad venom, and the extraction residue is contained in the wastewater generated after extraction. The equipment cleaning wastewater is generated in the cleaning of production equipment, pipelines and containers before and after use to remove residual medicinal material components and pollutants. The wastewater contains a certain amount of organic and inorganic matters. The preparation production wastewater is generated when the final product such as tablets, pills and capsules is produced, and contains medicinal components. The wastewater contains medicinal components and their metabolites.

[0003] The pharmaceutical wastewater generated by traditional Chinese medicine pharmaceutical enterprises is complex, containing a large amount of organic matter, inorganic matter, residual medicine and other substances. If these substances are directly discharged into the environment without treatment, they will cause serious pollution to water, soil and air, destroy the ecological balance and affect the survival and reproduction of animals and plants.

[0004] A patent application with the publication number CN115259455B discloses a pharmaceutical wastewater treatment device and a treatment process thereof, which comprises a sliding frame fixedly connected to the top wall of the filter screen and a mounting frame slidingly connected to the outer wall of the sliding frame. The bottom wall of the mounting frame is fixedly connected with a cleaning brush.

[0005] When the above-mentioned pharmaceutical wastewater treatment device processes the filter plate, the cleaning brush reciprocates on the filter screen to realize the cleaning operation on the top of the filter screen.

[0006] When the above-mentioned pharmaceutical wastewater treatment device reciprocates on the filter screen by the brush and cleans the impurities on the filter screen, the impurities carried by the sewage pass through the filter screen all the time. Therefore, the brush drives the impurities re-attached to the filter screen to reset when the brush resets. The impurities will be accumulated and clogged on the surface of the filter screen, causing the filter screen to be clogged and reducing the flow of sewage through the filter screen. Therefore, the problem of reducing the wastewater treatment efficiency is caused, and the impurities will cause the filter hole to be clogged, thereby affecting the normal use of the filter screen.

[0007] To this end, the present application provides a pharmaceutical wastewater treatment process and a filtering device thereof. SUMMARY

[0008] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background art is solved.

[0009] The technical scheme adopted by the present application to solve its technical problems is that the pharmaceutical wastewater treatment process comprises the following steps:

[0010] S1, the pharmaceutical wastewater is introduced into the wastewater station through the wastewater pipe network, and most of the floating matter and large particle suspended matter in the wastewater is removed by the filtering device and discharged into the water collecting well, wherein the filtering device comprises a filter, a filter plate is fixedly connected inside the filter, a filter groove is arranged inside the filter plate, a limiting plate is fixedly connected to the upper surface of the filter plate, a moving plate is slidably arranged on one side of the limiting plate, a first scraper is fixedly connected to the lower surface of the moving plate, and a second scraper is slidably connected to one side of the first scraper;

[0011] S2, the collected wastewater is introduced into the adjusting tank by a pump, and the wastewater is uniformly mixed by the stirring device in the adjusting tank; at the same time of stirring, compressed air is introduced into the adjusting tank, and the air is uniformly dispersed into the wastewater by using devices such as a perforated pipe and an aeration head;

[0012] S3, the wastewater after aeration is introduced into the hydrolysis acidification tank by using a lifting pump, the hydrolysis acidification tank is installed with high-efficiency filler, and the hydrolysis acidification bacteria adhere to the filler to grow and decompose high-molecular organic matter into small-molecular organic matter;

[0013] S4, the wastewater after hydrolysis acidification enters the aerobic aeration tank, and the organic pollutants in the wastewater are further oxidized and degraded by the aerobic microorganisms in the active sludge in the aerobic aeration tank, so that the organic pollutants in the wastewater are converted into carbon dioxide and water which are harmless to the environment;

[0014] S5, the wastewater treated by the aerobic aeration tank enters the intermediate sedimentation tank, the intermediate sedimentation tank separates the mud-water mixture treated by the aerobic tank, and a large amount of active sludge is contained in the effluent after biochemical treatment, at this time, the wastewater enters the intermediate sedimentation tank for solid-liquid separation, part of the sludge deposited is returned to the anaerobic tank to maintain the sludge concentration of the system, and part of the sludge is discharged into the sludge tank as residual sludge;

[0015] S6, the wastewater enters the anaerobic tank A from the intermediate sedimentation tank, the role of this section is to greatly degrade the organic pollutants in the water through the decomposition of anaerobic bacteria, and to decompose the difficult-to-degrade large-molecular organic matter in the water into small-molecular organic matter which is easy to be biodegraded through the action of anaerobic bacteria, thereby improving the biochemical degradation capacity of the later line;

[0016] S7, sewage from anaerobic tank A into anaerobic tank B, anaerobic tank B is provided with a small amount of aeration system at the bottom, through aeration, the activated sludge and water are more fully contacted, so that organic matter and nitrification reflux liquid will contain ammonia pollutants by denitrification into nitrogen gas over to remove;

[0017] S8, sewage from anaerobic tank B into the aerobic tank, through the aerobic microorganisms in the activated sludge in the aerobic tank, further oxidation and degradation of organic pollutants in the sewage, the organic pollutants in the sewage are converted into carbon dioxide and water harmless to the environment, ammonia nitrogen and organic nitrogen compounds in the sewage are oxidized into nitrate, and denitrification in anaerobic tank B forms a nitrification-denitrification system, while the excess phosphorus-accumulating bacteria absorb phosphorus in the sewage, achieving the purpose of biological phosphorus removal;

[0018] S9, sewage from the aerobic tank into the sedimentation tank, the sedimentation tank separates the mud-water mixture treated by the aerobic tank, after sewage treatment, the effluent contains a large amount of activated sludge, at this time the sewage enters the sedimentation tank for liquid separation, part of the sludge precipitated is returned to the anaerobic tank to maintain the sludge concentration of the system, and part of the excess sludge is discharged into the sludge thickening tank, lime is added to the sludge discharged into the sludge thickening tank for disinfection treatment, and then the sludge is regularly pumped out by a manure suction vehicle;

[0019] S10, sewage from the sedimentation tank into the membrane filtration tank, the sewage passes through the hollow fiber membrane in the membrane filtration tank, and 99% of the Escherichia coli and other bacteria in the water are filtered out through the membrane holes to ensure that the effluent meets the discharge standard;

[0020] S11, the sewage from the membrane filtration tank enters the ozone oxidation tank, and the sewage is decolorized and disinfected by adding ozone agent;

[0021] S12, after disinfection, the effluent meets the standard for reuse.

[0022] Further, the upper surface of the filter is fixedly connected with a water inlet pipe, the side surface of the filter is fixedly connected with a drain pipe, the inside of the limiting plate is provided with a first limiting groove, the first limiting groove is slidably connected with one side of the moving plate, the inside of the limiting plate is provided with a second limiting groove, the inside of the second limiting groove is slidably connected with one side of the second scraper, by driving the first scraper to move, the first scraper drives the second scraper to slide synchronously on the filter plate, the first scraper and the second scraper clean the impurities on the surface of the filter plate, and the first scraper also can dredge the filter groove by sliding in the first limiting groove.

[0023] Further, the upper surface of the moving plate is fixedly connected with a sliding rod, the surface of the sliding rod is slidably connected with a moving frame, the inside of the moving frame is threadedly connected with a reciprocating screw rod, one end of the reciprocating screw rod is rotatably connected with the inner wall of the filter, and the moving plate and the moving frame are fixedly connected with a spring.

[0024] Further, one side of the limiting plate is fixedly connected with a fixing frame, the reciprocating wire rod is rotationally connected with the inner wall of the fixing frame, one side of the filter is fixedly connected with a motor, the output end of the motor is fixedly connected with one end of the reciprocating wire rod, one end of the reciprocating wire rod is fixedly connected with a belt pulley, and the two belt pulleys are drivingly connected through a belt.

[0025] Further, both sides of the moving plate are rotationally connected with first limiting rods, the first limiting rods are slidingly connected with the inner wall of the first limiting grooves, both sides of the second scraper are rotationally connected with second limiting rods, and the second limiting rods are slidingly connected with the inner wall of the second limiting grooves.

[0026] Further, the second scraper is internally provided with a positioning groove, the positioning groove is slidingly connected with a positioning rod, and the positioning rod is fixedly connected with the inner wall of the first scraper.

[0027] Further, the first limiting groove comprises an initial section, one side of the initial section is provided with a dredging section, one end of the dredging section is provided with a pushing section, one side of the pushing section is provided with a first rising section, one side of the first rising section is provided with a first reset section, the second limiting groove comprises an abutting section, one side of the abutting section is provided with a second rising section, and one side of the second rising section is provided with a second reset section.

[0028] Further, one end of the first scraper is fixedly connected with a taper head, the inside of the dredging section is fixedly connected with a protruding block, the size of the first scraper is matched with the size of the filter groove, and the cross-sectional shape of the filter groove is set as an isosceles trapezoid.

[0029] Further, the upper surface of the filter plate is fixedly connected with an inclined plate, and the outer side of the filter is rotationally connected with a sealing plate.

[0030] Further, the inside of the filter is fixedly connected with a mixing pipe, the inside of the mixing pipe is fixedly connected with a spiral blade, the upper surface of the filter is fixedly connected with a dosing tank, and the electromagnetic valve is fixedly connected between the dosing tank and the inner wall of the filter plate.

[0031] The beneficial effects of the present application are as follows:

[0032] The present application is automatically operated, simple to operate, and can stably remove COD, ammonia nitrogen and total phosphorus pollutants in sewage through a biochemical combined process. The effluent of the sedimentation tank is filtered through a membrane assembly with a pore size of 0.1 microns to ensure that the suspended solids in the effluent meet the standard, and the effluent is clear. While removing suspended solids, 99% of coliform bacteria can also be removed. Ozone decolorization and disinfection technology are adopted, the decolorization efficiency is high, no decolorizing agent needs to be added, and no secondary pollution is generated.

[0033] The present application is provided with a first scraper and a second scraper, when the first scraper is driven to move, the first scraper drives the second scraper to move synchronously through the positioning rod, the first scraper and the second scraper contact the upper surface of the filter plate, and push the impurities generated during the filtration to the upper side of the inclined plate and accumulate, then the first scraper drives the second scraper to move away from the filter plate and reset, when resetting to the initial position, the first scraper and the second scraper contact the upper surface of the filter plate again, avoiding the contact between the first scraper and the second scraper and the filter plate during resetting, so that the impurities on the filter plate are driven to the other side of the filter by the first scraper and the second scraper during resetting, and accumulated, causing the filter plate to be blocked, thereby reducing the efficiency of sewage treatment;

[0034] The present application is provided with a first scraper and a second scraper, when the first scraper is driven to move, the first scraper drives the second scraper to move synchronously through the positioning rod, the first scraper and the second scraper contact the upper surface of the filter plate, and push the impurities generated during the filtration to the upper side of the inclined plate and accumulate, then the first scraper drives the second scraper to move away from the filter plate and reset, when resetting to the initial position, the first scraper and the second scraper contact the upper surface of the filter plate again, avoiding the contact between the first scraper and the second scraper and the filter plate during resetting, so that the impurities on the filter plate are driven to the other side of the filter by the first scraper and the second scraper during resetting, and accumulated, causing the filter plate to be blocked, thereby reducing the efficiency of sewage treatment;

[0035] The present application is provided with a first scraper and a second scraper, when the first scraper is driven to move, the first scraper drives the second scraper to move synchronously through the positioning rod, the first scraper and the second scraper contact the upper surface of the filter plate, and push the impurities generated during the filtration to the upper side of the inclined plate and accumulate, then the first scraper drives the second scraper to move away from the filter plate and reset, when resetting to the initial position, the first scraper and the second scraper contact the upper surface of the filter plate again, avoiding the contact between the first scraper and the second scraper and the filter plate during resetting, so that the impurities on the filter plate are driven to the other side of the filter by the first scraper and the second scraper during resetting, and accumulated, causing the filter plate to be blocked, thereby reducing the efficiency of sewage treatment; BRIEF DESCRIPTION OF DRAWINGS

[0036] The present application will be further described below with reference to the accompanying drawings.

[0037] Figure 1 is the flow chart of the sewage treatment process of the present application;

[0038] Figure 2 is the structural schematic diagram of the filter of the present application;

[0039] Figure 3 is the internal structure sectional view of the filter of the present application;

[0040] Figure 4 is the structural schematic diagram of the filter plate and the limiting plate of the present application;

[0041] Figure 5is a structure schematic view of the reciprocating wire rod, the first scraper and the second scraper of the present application;

[0042] Figure 6 is a structure schematic view of the first scraper and the second scraper of the present application;

[0043] Figure 7 is a structure schematic view of the reciprocating wire rod of the present application Figure 6 is a partial enlarged view of A in the figure;

[0044] Figure 8 is a structure schematic view of the first scraper of the present application;

[0045] Figure 9 is a structure schematic view of the filter plate and the filter groove of the present application;

[0046] Figure 10 is a structure schematic view of the limiting plate of the present application;

[0047] In the figure: 1, filter; 11, water inlet pipe; 12, mixing pipe; 13, spiral blade; 14, drainage rack; 15, drainage pipe; 2, dosing tank; 21, electromagnetic valve; 3, filter plate; 31, filter groove; 4, fixing frame; 41, reciprocating wire rod; 42, motor; 43, pulley; 44, moving frame; 5, sliding rod; 51, moving plate; 511, first limiting rod; 52, first scraper; 521, tapered head; 522, positioning rod; 53, second scraper; 531, second limiting rod; 532, positioning groove; 6, spring; 7, limiting plate; 71, first limiting groove; 711, initial section; 712, dredging section; 713, protruding block; 714, pushing section; 715, first rising section; 716, first reset section; 72, second limiting groove; 721, fitting section; 722, second rising section; 723, second reset section; 8, inclined plate; 81, sealing plate. DETAILED DESCRIPTION

[0048] In order to make the technical means, creative features, purposes and effects realized by the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0049] Embodiment one

[0050] As shown in the figure, the pharmaceutical wastewater treatment process of the present application comprises the following steps: Figure 1

[0051] ​S1, the pharmaceutical wastewater is introduced into the sewage station through the sewage pipe network, and most of the floating matter and large particle suspended matter in the wastewater is removed by a filtering device and discharged into a water collecting well, wherein the filtering device comprises a filter 1, a filter plate 3 is fixedly connected inside the filter 1, a filter groove 31 is arranged inside the filter plate 3, a limiting plate 7 is fixedly connected to the upper surface of the filter plate 3, a moving plate 51 is slidably arranged on one side of the limiting plate 7, a first scraper 52 is fixedly connected to the lower surface of the moving plate 51, and a second scraper 53 is slidably connected to one side of the first scraper 52;

[0052] S2, the collected wastewater is introduced into the adjusting tank by a pump, and the wastewater is uniformly mixed by the stirring device in the adjusting tank; at the same time of stirring, compressed air is introduced into the adjusting tank, and the air is uniformly dispersed into the wastewater by using devices such as a perforated pipe and an aeration head;

[0053] S3, the wastewater after aeration is introduced into the hydrolysis acidification tank by using a lifting pump, the hydrolysis acidification tank is provided with high-efficiency filler, and hydrolysis acidification bacteria adhere to the filler to grow and decompose high-molecular organic matter into small-molecular organic matter;

[0054] S4, the wastewater after hydrolysis acidification enters the aerobic aeration tank, and the organic pollutants in the wastewater are further oxidized and degraded by the aerobic microorganisms in the active sludge in the aerobic aeration tank, so that the organic pollutants in the wastewater are converted into carbon dioxide and water which are harmless to the environment;

[0055] S5, the wastewater treated by the aerobic aeration tank enters the intermediate sedimentation tank, the intermediate sedimentation tank separates the mud-water mixture treated by the aerobic tank, a large amount of active sludge is contained in the effluent after biochemical treatment, at this time, the wastewater enters the intermediate sedimentation tank for solid-liquid separation, part of the sludge deposited is returned to the anaerobic tank to maintain the sludge concentration of the system, and part of the sludge is discharged into the sludge tank as residual sludge;

[0056] S6, the wastewater enters the anaerobic tank A from the intermediate sedimentation tank, the role of this section is to greatly degrade the organic pollutants in the water through the decomposition of anaerobic bacteria, and to decompose the refractory large-molecular organic matter in the water into small-molecular organic matter which is easy to be biodegraded through the action of anaerobic bacteria, so that the biochemical degradation capacity of the later line is improved;

[0057] S7, the wastewater enters the anaerobic tank B from the anaerobic tank A, a small amount of aeration system is arranged at the bottom of the anaerobic tank B, the active sludge is made to contact with water more fully through aeration, so that the organic matter and the nitrification return liquid convert the ammonia-containing pollutants into nitrogen gas through denitrification and remove the nitrogen gas;

[0058] S8, sewage from anaerobic tank B into the aerobic tank, through the aerobic tank inside the activated sludge of aerobic microorganisms, further oxidation and degradation of organic pollutants in wastewater, the organic pollutants in wastewater into carbon dioxide and water harmless to the environment, ammonia nitrogen and organic nitrogen compounds in wastewater are oxidized into nitrate, with denitrification in anaerobic tank B to form nitrification-denitrification system, while the excess phosphorus bacteria absorb phosphorus in wastewater, to achieve the purpose of biological phosphorus removal;

[0059] S9, sewage from the aerobic tank into the sedimentation tank, the sedimentation tank separates the mud-water mixture treated by the aerobic tank, after sewage treatment, the effluent contains a large amount of activated sludge, at this time the sewage enters the sedimentation tank for liquid separation, the sludge precipitated part of the reflux to the anaerobic tank to maintain the sludge concentration of the system, and the other part of the excess sludge is discharged into the sludge thickening tank, the sludge is added with lime for disinfection treatment, and then is regularly pumped out by a manure suction vehicle;

[0060] S10, the sewage from the sedimentation tank enters the membrane filtration tank, the sewage passes through the hollow fiber membrane in the membrane filtration tank, and the fine suspended matter and 99% of the coliform bacteria in the water are filtered out through the membrane holes to ensure that the effluent meets the discharge standard;

[0061] S11, the sewage from the membrane filtration tank enters the ozone oxidation tank, and the sewage is decolorized and disinfected by adding ozone agent;

[0062] S12, after disinfection, the effluent meets the standard for reuse.

[0063] As shown in Figures 2 to 10 The upper surface of the filter 1 is fixedly connected with a water inlet pipe 11, the side surface of the filter 1 is fixedly connected with a drain pipe 15, the inside of the limiting plate 7 is provided with a first limiting groove 71, the first limiting groove 71 is slidably connected with one side of the moving plate 51, and the inside of the limiting plate 7 is provided with a second limiting groove 72, and the inside of the second limiting groove 72 is slidably connected with one side of the second scraper 53.

[0064] By driving the first scraper 52 to move, the first scraper 52 drives the second scraper 53 to slide on the filter plate 3 synchronously, and the first scraper 52 and the second scraper 53 clean the impurities on the surface of the filter plate 3, and the first scraper 52 also can dredge the filter groove 31 by sliding in the first limiting groove 71.

[0065] By driving the first scraper 52 to move, the first scraper 52 drives the second scraper 53 to slide on the filter plate 3 synchronously, and the first scraper 52 and the second scraper 53 clean the impurities on the surface of the filter plate 3, and the first scraper 52 also can dredge the filter groove 31 by sliding in the first limiting groove 71.

[0066] As shown in Figures 6 to 10As shown, the two sides of the moving plate 51 are rotationally connected with first limiting rods 511, the first limiting rods 511 are slidingly connected with the inner walls of the first limiting grooves 71, the two sides of the second scraper 53 are rotationally connected with second limiting rods 531, and the second limiting rods 531 are slidingly connected with the inner walls of the second limiting grooves 72.

[0067] As shown in the figure, Figure 10 As shown, the first limiting groove 71 comprises an initial section 711, one side of the initial section 711 is provided with a dredging section 712, one end of the dredging section 712 is provided with a pushing section 714, one side of the pushing section 714 is provided with a first rising section 715, one side of the first rising section 715 is provided with a first reset section 716, and the second limiting groove 72 comprises a fitting section 721, one side of the fitting section 721 is provided with a second rising section 722, and one side of the second rising section 722 is provided with a second reset section 723.

[0068] As shown in the figure, Figures 1 to 4 As shown, the upper surface of the filter plate 3 is fixedly connected with an inclined plate 8, and the outer side of the filter 1 is rotationally connected with a sealing plate 81.

[0069] Specifically, when the existing filter equipment filters impurities in sewage, the impurities are filtered through the filter plate 3, and then the impurities on the filter plate 3 are cleaned by driving the brush to move;

[0070] When the above-mentioned brush resets the impurities above the filter plate 3, since the sewage carrying impurities always passes through the filter plate 3, the brush will drive the impurities re-attached to the filter plate 3 to reset when resetting, so that the impurities will be accumulated and blocked on the surface of the filter plate 3, causing the filter plate 3 to be blocked, reducing the flow of sewage through the filter plate 3, and thus causing the problem of reducing the sewage treatment efficiency;

[0071] In order to solve the above-mentioned problems, the working principle of the first embodiment is as follows: the sewage enters the inside of the filter 1 through the water inlet pipe 11, the sewage carrying impurities falls on the filter plate 3, and the sewage is discharged through the filter groove 31 and then discharged through the drain pipe 15, at this time the impurities are above the filter plate 3;

[0072] Under normal circumstances, the first limiting rod 511 of the first scraper 52 is in the initial section 711 of the first limiting groove 71, the second limiting rod 531 of the second scraper 53 is in the fitting section 721 of the second limiting groove 72, and the lower sides of the first scraper 52 and the second scraper 53 are in contact with the upper side of the filter plate 3;

[0073] Subsequently drive the moving plate 51 to move, the moving plate 51 drives the first scraper 52 to move, the first scraper 52 drives the second scraper 53 to move, at this time the first limiting rod 511 of the first scraper 52 moves in the initial section 711 of the first limiting groove 71, the second limiting rod 531 of the second scraper 53 moves in the fitting section 721, the first scraper 52 and the second scraper 53 clean the impurities filtered above the filter plate 3;

[0074] When the first limiting rod 511 moves to the first rising section 715, the second limiting rod 531 moves to the second rising section 722, the first scraper 52 and the second scraper 53 are away from the upper side of the filter plate 3 and push the impurities to slide on one side of the inclined plate 8;

[0075] When the first limiting rod 511 moves to the first reset section 716, and the second limiting rod 531 moves to the second reset section 723, the first scraper 52 and the second scraper 53 push the impurities to the uppermost side of the inclined plate 8, and the impurities are concentrated to the sealing plate 81 through the inclined surface of the inclined plate 8;

[0076] Drive the first limiting rod 511 to slide in the first reset section 716, and the second limiting rod 531 to slide in the second reset section 723, at this time the first scraper 52 drives the second scraper 53 to reset, and is away from the upper side of the filter plate 3 below;

[0077] The first limiting rod 511 moves to the initial section 711, and the second limiting rod 531 moves to the fitting section 721, so that the impurities above the filter plate 3 can be cleaned once, and the impurities on the filter plate 3 can be pushed to the sealing plate 81 for accumulation by repeating the above process, and after use, the impurities at the inclined plate 8 can be concentrated and cleaned by opening the sealing plate 81;

[0078] The first scraper 52 and the second scraper 53 are away from the upper side of the filter plate 3 when they are reset, which avoids the contact between the first scraper 52, the second scraper 53 and the filter plate 3, so that the impurities on the filter plate 3 are pushed to the other side of the filter 1 by the first scraper 52 and the second scraper 53, which causes the filter plate 3 to be blocked, thereby reducing the efficiency of the sewage.

[0079] As shown in Figure 5 The upper surface of the moving plate 51 is fixedly connected with a sliding rod 5, the surface of the sliding rod 5 is slidably connected with a moving frame 44, the inside of the moving frame 44 is threadedly connected with a reciprocating lead screw 41, one end of the reciprocating lead screw 41 is rotatably connected with the inner wall of the filter 1, and the moving plate 51 and the moving frame 44 are fixedly connected with a spring 6.

[0080] Specific, drive reciprocating screw rod 41 rotation, reciprocating screw rod 41 mobile frame 44 in the inside of filter 1 reciprocating motion, mobile frame 44 drive slide rod 5 synchronous movement, slide rod 5 drive moving plate 51 synchronous movement, moving plate 51 can drive the first scraper 52 movement, the first scraper 52 drive second scraper 53 movement, the first scraper 52 and second scraper 53 cooperation can be brought to the filter plate 3 on the impurities cleaning operation.

[0081] As shown in Figure 5 , one side of the limiting plate 7 is fixedly connected with the fixed frame 4, the reciprocating screw rod 41 and the inner wall of the fixed frame 4 are rotatably connected, one side of the filter 1 is fixedly connected with the motor 42, the output end of the motor 42 is fixedly connected with one end of the reciprocating screw rod 41, one end of the reciprocating screw rod 41 is fixedly connected with the pulley 43, and the two pulleys 43 are connected through the belt drive.

[0082] Specific, open the motor 42, the motor 42 drive a reciprocating screw rod 41 rotation, one end of the reciprocating screw rod 41 drive pulley 43 rotation, pulley 43 through the belt drive another end of the reciprocating screw rod 41 pulley 43 synchronous rotation, so that the two reciprocating screw rod 41 synchronous rotation, that can drive the mobile frame 44 in the fixed frame 4 inside sliding, the fixed frame 4 can avoid the impurities in the sewage fall on the surface of the reciprocating screw rod 41, so as to cause the problem of the reciprocating screw rod 41 can not be used.

[0083] Example two

[0084] As shown in Figures 6 to 9 , compared with example one, another embodiment of the present application is: one end of the first scraper 52 is fixedly connected with the taper head 521, the inside of the dredging section 712 is fixedly connected with the protrusion 713, the size of the first scraper 52 and the size of the filter groove 31 are matched, and the cross-sectional shape of the filter groove 31 is set as isosceles trapezoidal.

[0085] As shown in Figure 6 and Figure 7 , the inside of the second scraper 53 is provided with a positioning groove 532, the inside of the positioning groove 532 is slidably connected with a positioning rod 522, and the positioning rod 522 and the inner wall of the first scraper 52 are fixedly connected.

[0086] Specific, pharmaceutical wastewater may be accompanied by some impurities with viscosity, easy to condense or difficult to disperse, these impurities will accumulate on the surface or inside of the filter groove 31, not easy to be washed away by water flow, and accumulate in the filter groove 31, cause the filter groove 31 blockage, make the sewage filtration efficiency decline, thus causing the problem of sewage efficiency reduction.

[0087] In order to solve the above problems, when the first scraper 52 moves, the first scraper 52 drives the positioning rod 522 to move synchronously, the positioning rod 522 drives the second scraper 53 to slide synchronously under the action of the positioning groove 532, the first scraper 52 drives the first limiting rod 511 to slide inside the initial section 711, and the second limiting rod 531 slides at the abutting section 721;

[0088] When the first limiting rod 511 moves from the initial section 711 to the dredging section 712, the first limiting rod 511 drives the moving plate 51 to slide on the surface of the sliding rod 5 and stretch the spring 6, and at the same time, the moving plate 51 drives the first scraper 52 to slide into the inside of the filter groove 31, and at the same time, the first scraper 52 drives the positioning rod 522 to slide inside the positioning groove 532, and the first scraper 52 moves to the inside of the filter groove 31, when the first limiting rod 511 moves inside the dredging section 712, the positioning rod 522 drives the second scraper 53 to slide synchronously through the positioning groove 532, the second scraper 53 pushes the impurities on the surface of the filter plate 3, the second limiting rod 531 slides at the pushing section 714, the first scraper 52 drives the taper head 521 to move inside the filter groove 31, and the impurities blocked inside the filter groove 31 are crushed by the taper head 521, so that the filter groove 31 can be dredged, and the above process can be repeated to dredge the subsequent filter groove 31;

[0089] The second embodiment avoids the problem that impurities are easily accumulated inside the filter groove 31 during the filtering process, causing the filter groove 31 to be blocked, thereby reducing the efficiency of sewage treatment;

[0090] The impurities in pharmaceutical wastewater include raw materials in the pharmaceutical process, which exist in the form of solid particles in wastewater. Since the first scraper 52 is fixedly arranged and the position of the taper head 521 on the surface thereof is fixed, when the above-mentioned impurities are stuck in the filter groove 31 and are located in the gap between the two taper heads 521, the first scraper 52 is difficult to drive the taper head 521 to crush and dredge the impurities at this time, and the impurities at this position hinder the movement of the first scraper 52 in the filter groove 31, which makes the dredging work of the first scraper 52 difficult to be carried out, so that the subsequent filter groove 31 is difficult to be dredged, resulting in a decrease in the efficiency of sewage impurity filtration, thereby causing a decrease in the efficiency of sewage treatment;

[0091] In order to avoid the above problems, when the first limiting rod 511 moves in the dredging section 712, the first limiting rod 511 is extruded by the protrusion 713 inside the dredging section 712, so that the first limiting rod 511 slides downward, the first limiting rod 511 drives the first scraper 52 to slide downward, the first scraper 52 drives the tapered head 521 to move downward, so that the position of the tapered head 521 changes, then the first limiting rod 511 is separated from the protrusion 713, at this time the spring 6 drives the moving plate 51 to move on the sliding rod 5, and the first scraper 52 drives the tapered head 521 to move again, and the above operation is repeated, when the first scraper 52 moves inside the filter groove 31, the position of the tapered head 521 can be changed, that is, the impurities in the gap between the tapered heads 521 can be crushed, and the up-down vibration of the tapered head 521 can also avoid the impurities adhering to the tapered head 521.

[0092] As Figure 2 shown, the filter 1 is fixedly connected with a mixing pipe 12 inside, the mixing pipe 12 is fixedly connected with a spiral blade 13 inside, the upper surface of the filter 1 is fixedly connected with a dosing tank 2, and the dosing tank 2 and the inner wall of the filter plate 3 are fixedly connected with an electromagnetic valve 21.

[0093] Specifically, when the sewage enters the inside of the filter 1 through the water inlet pipe 11, the medicament in the dosing tank 2 is quantitatively discharged through the electromagnetic valve 21, the medicament and the sewage enter the inside of the mixing pipe 12, and the sewage can be caused to rotate by the spiral blade 13, the sewage rotation can fully mix the medicament, and the spiral blade 13 also increases the contact time of the sewage and the medicament, so that the sewage and the medicament are more fully mixed.

[0094] Working principle, the sewage enters the inside of the filter 1 through the water inlet pipe 11, the medicament in the dosing tank 2 is quantitatively discharged through the electromagnetic valve 21, the medicament and the sewage enter the inside of the mixing pipe 12, and the sewage can be caused to rotate by the spiral blade 13, the sewage rotation can fully mix the medicament, and the spiral blade 13 also increases the contact time of the sewage and the medicament, so that the sewage and the medicament are more fully mixed, and then the sewage carrying impurities falls on the filter plate 3, the sewage is discharged through the filter groove 31 and then discharged through the drain pipe 15, at this time the impurities are above the filter plate 3;

[0095] The motor 42 is turned on, the motor 42 drives one reciprocating screw rod 41 to rotate, one end of the reciprocating screw rod 41 drives the belt pulley 43 to rotate, the belt pulley 43 drives the other end of the other reciprocating screw rod 41 to rotate synchronously through the belt, so that the two reciprocating screw rods 41 rotate synchronously, which can drive the moving frame 44 to slide in the fixed frame 4, the reciprocating screw rod 41 drives the moving frame 44 to reciprocate in the filter 1, the moving frame 44 drives the sliding rod 5 to move synchronously, the sliding rod 5 drives the moving plate 51 to move synchronously, and the moving plate 51 can drive the first scraper 52 to move.

[0096] When the first scraper 52 moves, the first scraper 52 drives the positioning rod 522 to move synchronously, and the positioning rod 522 drives the second scraper 53 to slide synchronously under the action of the positioning groove 532;

[0097] Under normal circumstances, the first limiting rod 511 of the first scraper 52 is located in the initial section 711 of the first limiting groove 71, the second limiting rod 531 of the second scraper 53 is located in the fitting section 721 in the second limiting groove 72, and the lower part of the first scraper 52 and the second scraper 53 contacts the upper part of the filter plate 3;

[0098] Then drive the moving plate 51 to move, the moving plate 51 drives the first scraper 52 to move, and the first scraper 52 drives the second scraper 53 to move, at this time, the first limiting rod 511 of the first scraper 52 moves in the initial section 711 of the first limiting groove 71, the second limiting rod 531 of the second scraper 53 moves in the fitting section 721, and the first scraper 52 and the second scraper 53 clean the impurities filtered on the upper part of the filter plate 3;

[0099] When the first limiting rod 511 moves from the initial section 711 to the dredging section 712, the first limiting rod 511 drives the moving plate 51 to slide on the surface of the slide rod 5 and stretch the spring 6, at the same time, the moving plate 51 drives the first scraper 52 to slide to the inside of the filter groove 31, at the same time, the first scraper 52 drives the positioning rod 522 to slide in the positioning groove 532, and the first scraper 52 moves to the inside of the filter groove 31, when the first limiting rod 511 moves in the dredging section 712, the positioning rod 522 drives the second scraper 53 to slide synchronously through the positioning groove 532, the second scraper 53 pushes the impurities on the surface of the filter plate 3, the second limiting rod 531 slides in the pushing section 714, the first scraper 52 drives the taper head 521 to move in the filter groove 31, the impurities blocked in the filter groove 31 are crushed by the taper head 521, and the filter groove 31 can be dredged, and the above process can be repeated to dredge the subsequent filter groove 31;

[0100] When the first limiting rod 511 moves in the dredging section 712, the first limiting rod 511 is extruded by the protrusion 713 inside the dredging section 712, so that the first limiting rod 511 slides downward, the first limiting rod 511 drives the first scraper 52 to slide downward, the first scraper 52 drives the cone head 521 to move downward, so that the position of the cone head 521 changes, then the first limiting rod 511 is separated from the protrusion 713, at this time the spring 6 drives the moving plate 51 to move on the sliding rod 5, and the first scraper 52 drives the cone head 521 to move again, the above operation is repeated, when the first scraper 52 moves in the filter groove 31, the position of the cone head 521 can be changed, and the impurities in the gap between the cone heads 521 can be crushed, and the reciprocating vibration of the cone head 521 up and down can also avoid the impurities adhering to the cone head 521;

[0101] When the first limiting rod 511 moves to the first rising section 715 and the second limiting rod 531 moves to the second rising section 722, the moving plate 51 is driven upward by the spring 6, the first scraper 52 and the second scraper 53 are away from the upper side of the filter plate 3 and push the impurities to slide on one side of the inclined plate 8;

[0102] When the first limiting rod 511 moves to the first reset section 716 and the second limiting rod 531 moves to the second reset section 723, the first scraper 52 and the second scraper 53 push the impurities to the uppermost side of the inclined plate 8, and the impurities are concentrated to the sealing plate 81 through the inclined surface of the inclined plate 8;

[0103] The first limiting rod 511 is driven to slide in the first reset section 716, and the second limiting rod 531 is driven to slide in the second reset section 723, at this time the first scraper 52 drives the second scraper 53 to reset and move away from the upper side of the filter plate 3;

[0104] The first limiting rod 511 moves to the initial section 711, and the second limiting rod 531 moves to the abutting section 721, so that the impurities on the upper side of the filter plate 3 can be cleaned once, and the above process can be repeated to push the impurities on the filter plate 3 to the sealing plate 81 for accumulation, and after use, the impurities on the inclined plate 8 can be cleaned by opening the sealing plate 81.

[0105] The above shows and describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A pharmaceutical wastewater filtration device, characterized in that: The filter includes a filter (1), a filter plate (3) fixedly connected inside the filter (1), a filter groove (31) provided inside the filter plate (3), a limiting plate (7) fixedly connected to the upper surface of the filter plate (3), a moving plate (51) slidably provided on one side of the limiting plate (7), a first scraper (52) fixedly connected to the lower surface of the moving plate (51), a second scraper (53) slidably connected to one side of the first scraper (52), a water inlet pipe (11) fixedly connected to the upper surface of the filter (1), a drain pipe (15) fixedly connected to the side of the filter (1), and a filter groove (31) provided inside the limiting plate (7). There is a first limiting groove (71), and the first limiting groove (71) is slidably connected to one side of the moving plate (51). The limiting plate (7) is provided with a second limiting groove (72), and the interior of the second limiting groove (72) is slidably connected to one side of the second scraper (53). By driving the first scraper (52) to move, the first scraper (52) drives the second scraper (53) to slide synchronously on the filter plate (3). The first scraper (52) and the second scraper (53) clean the impurities on the surface of the filter plate (3). At the same time, the first scraper (52) slides in the first limiting groove (71) and can also unclog the filter tank (31). The second scraper (53) has a positioning groove (532) inside, and a positioning rod (522) is slidably connected inside the positioning groove (532). The positioning rod (522) is fixedly connected to the inner wall of the first scraper (52). The first limiting groove (71) includes an initial section (711), a clearing section (712) is provided on one side of the initial section (711), a pushing section (714) is provided at one end of the clearing section (712), a first rising section (715) is provided on one side of the pushing section (714), and a first reset section (716) is provided on one side of the first rising section (715). The second limiting groove (72) includes a fitting section (721), a second rising section (722) is provided on one side of the fitting section (721), and a second reset section (723) is provided on one side of the second rising section (722).

2. The pharmaceutical wastewater filtration equipment according to claim 1, characterized in that: A slide rod (5) is fixedly connected to the upper surface of the movable plate (51), and a movable frame (44) is slidably connected to the surface of the slide rod (5). A reciprocating screw (41) is threadedly connected to the inside of the movable frame (44). One end of the reciprocating screw (41) is rotatably connected to the inner wall of the filter (1). A spring (6) is fixedly connected between the movable plate (51) and the movable frame (44).

3. The pharmaceutical wastewater filtration equipment according to claim 2, characterized in that: A fixed frame (4) is fixedly connected to one side of the limiting plate (7). The reciprocating screw (41) is rotatably connected to the inner wall of the fixed frame (4). A motor (42) is fixedly connected to one side of the filter (1). The output end of the motor (42) is fixedly connected to one end of the reciprocating screw (41). A pulley (43) is fixedly connected to one end of the reciprocating screw (41). The two pulleys (43) are connected by belt drive.

4. The pharmaceutical wastewater filtration equipment according to claim 3, characterized in that: The movable plate (51) is rotatably connected to the two sides of the first limiting rod (511), and the first limiting rod (511) is slidably connected to the inner wall of the first limiting groove (71). The second scraper (53) is rotatably connected to the two sides of the second limiting rod (531), and the second limiting rod (531) is slidably connected to the inner wall of the second limiting groove (72).

5. The pharmaceutical wastewater filtration equipment according to claim 4, characterized in that: A cone (521) is fixedly connected to one end of the first scraper (52), and a protrusion (713) is fixedly connected inside the unblocking section (712). The size of the first scraper (52) matches the size of the filter tank (31), and the cross-sectional shape of the filter tank (31) is set as an isosceles trapezoid.

6. The pharmaceutical wastewater filtration equipment according to claim 1, characterized in that: An inclined plate (8) is fixedly connected to the upper surface of the filter plate (3), and a sealing plate (81) is rotatably connected to the outer side of the filter (1).

7. A pharmaceutical wastewater filtration device according to claim 6, characterized in that: A mixing tube (12) is fixedly connected inside the filter (1), a spiral blade (13) is fixedly connected inside the mixing tube (12), a dosing tank (2) is fixedly connected to the upper surface of the filter (1), and a solenoid valve (21) is fixedly connected between the dosing tank (2) and the inner wall of the filter plate (3).

8. A pharmaceutical wastewater treatment process, characterized in that: The pharmaceutical wastewater filtration device according to any one of claims 1 to 7 includes the following steps: S1. Pharmaceutical wastewater enters the wastewater treatment plant through the wastewater pipeline network, and most of the floating matter and large suspended solids in the wastewater are removed by the filtration equipment and discharged into the collection well. S2. Wastewater enters the equalization tank, and compressed air is introduced into the equalization tank for stirring. S3. The aerated wastewater is introduced into the hydrolysis acidification tank to decompose the high molecular weight organic matter in the wastewater into low molecular weight organic matter. S4. After hydrolysis and acidification, the wastewater enters the aerobic aeration tank, where organic pollutants in the wastewater are converted into carbon dioxide and water. S5. Wastewater treated in the aerobic aeration tank enters the intermediate sedimentation tank for solid-liquid separation. S6. Wastewater enters anaerobic tank A from the intermediate sedimentation tank, where anaerobic bacteria degrade organic pollutants in the water. S7. Wastewater enters anaerobic tank B from anaerobic tank A and undergoes aeration treatment. S8. Wastewater enters the aerobic tank from the anaerobic tank B, causing the organic pollutants in the wastewater to be converted into carbon dioxide and water. S9. Wastewater enters the sedimentation tank from the aerobic tank, where the sedimentation tank separates the mud-water mixture that has been treated in the aerobic tank. S10. Wastewater enters the membrane filtration tank from the sedimentation tank, where fine suspended solids and 99% of pathogens such as E. coli are filtered through the membrane pores. S11. Wastewater enters the ozone oxidation tank from the membrane filtration tank, where ozone is added to decolorize and disinfect the wastewater. S12. After disinfection, the effluent meets the standards and can be reused.

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