Sewage treatment device for sacrifice yellow paper pulping process

Abstract

The invention discloses a sewage treatment device for a sacrifice yellow paper pulping process, relates to the technical field of sewage treatment, and aims to solve the problems that a screen or a filter screen in a pretreatment link proposed in the background technology is extremely easy to block when filtering high-fiber wastewater, cannot be cleaned in real time, needs to be frequently shut down for cleaning, and is inconvenient to operate. In order to solve the problem of low sewage treatment efficiency in the prior art, the invention provides the following scheme: the device comprises a pretreatment unit, a precipitation unit, a biological treatment unit and a deep filtration unit which are circumferentially distributed, the pretreatment unit comprises a pretreatment tower of which the inner wall of the upper part is fixedly provided with a pH sensor, a transmission mechanism, a filtration assembly and a recovery mechanism; the transmission mechanism comprises a transmission motor, a transmission shaft and a lifting column which are connected to the outer wall of the top of the pretreatment tower through bolts. Large-particle fibers and impurities attached to the elastic filter screen can be effectively shaken off in real time, the filter screen blockage problem is avoided, continuous and automatic operation is achieved, and the sewage treatment efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the sewage treatment technical field, especially to a kind of sacrifice yellow paper pulping process sewage treatment device. BACKGROUND

[0002] Sacrifice yellow paper, also known as yellow paper, is a kind of yellow handmade paper made of tender bamboo and turmeric juice. When it is ignited and burned, it shrinks and curls (which is difficult for general handmade paper to achieve).

[0003] In the production process of sacrifice yellow paper, pulping process produces a large amount of organic wastewater containing high-concentration fiber, impurities and acidic substances. If such wastewater is discharged directly without treatment, it will cause serious pollution to the environment. At present, for such small and medium-sized industrial wastewater, a multi-stage treatment process including pretreatment, sedimentation, biochemical treatment and advanced filtration is often used. In the sewage treatment process of the prior art, the screen or filter screen in the pretreatment link is easily clogged when filtering high-fiber wastewater, and the screen or filter screen cannot be cleaned in real time, so frequent shutdown for cleaning is required, and the sewage treatment efficiency is low. SUMMARY

[0004] The present application provides a kind of sacrifice yellow paper pulping process sewage treatment device, solve the screen or filter screen in the pretreatment link in prior art when filtering high-fiber wastewater is easily clogged, cannot be cleaned in real time to screen or filter screen, need frequent shutdown for cleaning, and the problem of low sewage treatment efficiency.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme: The utility model provides a kind of sewage treatment device for sacrificial yellow paper pulping procedure, including the periphery distribution of pre-treatment unit, sedimentation unit, biological treatment unit and depth filtration unit, the pre-treatment unit includes the pre-treatment tower of the upper inner wall of which is fixed with pH sensor, transmission mechanism, filter assembly and recovery mechanism, the transmission mechanism includes the transmission motor connected by bolt on the top outer wall of pre-treatment tower, the transmission shaft connected by shaft coupling on the bottom end of transmission motor output shaft, the lifting column connected by bolt on the bottom end outer wall of transmission shaft, the lifting cylinder arranged on the lower outer wall of lifting column, the connecting rod welded on the upper inner wall of lifting cylinder, the connecting plate connected by bolt on the bottom outer wall of lifting cylinder, and four connecting blocks are respectively welded on the circumferential outer wall of connecting plate, the circumferential outer wall of lifting column is provided with limiting slot, and the one end of connecting rod is slidably installed in limiting slot, the filter assembly includes the mounting ring connected by bolt on the lower inner wall of pre-treatment tower, the inverted conical elastic filter screen connected by bolt on the inner wall of mounting ring, four T-shaped blocks are respectively welded on the bottom outer wall of mounting ring, four sliders are respectively slidably installed on the outer wall of four T-shaped blocks, four fixed seats are respectively welded on the bottom outer wall of four sliders, and four connecting rods are respectively hinged on the outer wall of four fixed seats, the elastic filter screen is connected by bolt on the top outer wall of connecting plate, the bottom end of four connecting rods is respectively hinged on the outer wall of four connecting blocks, the sedimentation unit includes the precipitation tower, dosing tank and helical guide vane welded on the middle inner wall of precipitation tower, the biological treatment unit includes the aeration tower, aeration mechanism, biological filler connected by bolt on the middle inner wall of aeration tower, heat exchange mechanism and heat dissipation mechanism, the aeration mechanism includes the gas delivery pipe through and fixed on one side lower outer wall of aeration tower, the aeration cover connected by bearing on the upper outer wall of gas delivery pipe, the connecting shaft welded on the top inner wall of aeration cover and a plurality of guide vanes welded on the outer wall of connecting shaft, a plurality of aeration micro-holes are formed on the upper circumferential outer wall of aeration cover, the heat exchange mechanism includes a plurality of brass heat exchange plates, the heat dissipation mechanism includes a plurality of heat dissipation fans, the air supply pipe is fixed on one side upper inner wall of aeration tower, and one end of air supply pipe is through and fixed on one side lower inner wall of pre-treatment tower, a plurality of air outlet holes are formed on the outer wall of one end of air supply pipe, and a waterproof air-permeable membrane is fixed on the inner wall of bottom end of air supply pipe, the depth filtration unit includes the filter tower, the mounting frame connected by bolt on the middle inner wall of filter tower, the support layer arranged on the lower inner wall of mounting frame, the activated carbon filter layer arranged on the middle inner wall of mounting frame and the quartz sand layer arranged on the upper inner wall of mounting frame.

[0006] Preferably, the lower inner wall of one side of the pre-treatment tower is fixed with a water inlet pipe, and the bottom inner wall of the pre-treatment tower is fixed with a sewage discharge pipe, and the lower outer wall of the sewage discharge pipe is provided with a sewage discharge valve.

[0007] Preferably, the recovery mechanism comprises a recovery pipe connected to the outer wall of the bottom end of the blowdown pipe through a flange, a conveying motor connected to the outer wall of one side of the blowdown pipe through a bolt, a mounting shaft connected to one end of the output shaft of the conveying motor through a coupling, helical blades welded to the outer wall of the mounting shaft, and a fixing block connected to the outer wall of one end of the mounting shaft through a bearing, wherein filter holes are arranged on the outer wall of the bottom of the recovery pipe below the blowdown pipe, and the fixing block is connected to the inner wall of one end of the recovery pipe through a bolt.

[0008] Preferably, a tower cover is connected to the outer wall of the top end of the precipitation tower through a bolt, and a discharge pipe is fixed to the inner wall of the bottom of the precipitation tower, wherein a ball valve is arranged on the outer wall of the lower part of the discharge pipe.

[0009] Preferably, a sealing cover is connected to the outer wall of the top of the aeration tower through a bolt, and a flange pipe is fixed to the inner wall of the bottom of the aeration tower, wherein a ball valve is arranged on the outer wall of the lower part of the flange pipe.

[0010] Preferably, a fixing plate is connected to the inner wall of the upper part of the aeration tower through a bolt, and a plurality of heat exchange plates are welded to the outer wall of the bottom of the fixing plate.

[0011] Preferably, a fixing frame is fixed to the inner wall of one side of the upper part of the aeration tower, an installation plate is connected to the outer wall of one side of the fixing frame through a bolt, and a plurality of cooling fans are connected to the outer wall of one side of the installation plate through a bolt.

[0012] Preferably, a top cover is connected to the outer wall of the top of the filter tower through a bolt, and a drain pipe is fixed to the inner wall of the bottom of the filter cylinder.

[0013] Preferably, a water outlet pipe is fixed to the inner wall of the upper part of the pretreatment cylinder, one end of the water outlet pipe is fixed to the inner wall of the upper part of the precipitation tower, two pH adjusting tanks are fixed to the inner wall of the top of the water outlet pipe, a clean water pipe is fixed to the inner wall of the lower part of the precipitation tower, one end of the clean water pipe is fixed to the inner wall of the lower part of the aeration tower, a connecting pipe is fixed to the inner wall of the upper part of the aeration tower, and one end of the connecting pipe is fixed to the inner wall of the upper part of the filter tower.

[0014] The present application has the following advantages: The output shaft of the transmission motor drives the transmission shaft and the lifting column to rotate, the lifting column forces the lifting cylinder and the connecting rod to move along the limiting groove, thereby realizing the up-and-down reciprocating movement of the lifting cylinder, the lifting cylinder drives the connecting plate to move, thereby causing the elasticity to vibrate periodically, the large particles of fiber and impurities attached to the elastic filter screen can be shaken off in real time and effectively, the problem of filter screen blockage is avoided, continuous and automatic operation is realized, and the sewage treatment efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The present application provides a whole front view structural schematic diagram of a sewage treatment device for a sacrificial yellow paper pulping process.

[0016] Figure 2 A kind of pre-treatment unit main view sectional structure schematic diagram of sewage treatment device for the pulping process of sacrificial yellow paper is proposed in the application.

[0017] Figure 3 A kind of transmission mechanism main view structure schematic diagram of sewage treatment device for the pulping process of sacrificial yellow paper is proposed in the application.

[0018] Figure 4 A kind of Figure 3 Enlarged structure schematic diagram in A of it.

[0019] Figure 5 A kind of filter assembly main view structure schematic diagram of sewage treatment device for the pulping process of sacrificial yellow paper is proposed in the application.

[0020] Figure 6 A kind of filter assembly main view structure schematic diagram of sewage treatment device for the pulping process of sacrificial yellow paper is proposed in the application.

[0021] Figure 7 A kind of Figure 6 Enlarged structure schematic diagram in B of it.

[0022] Figure 8 A kind of recovery mechanism partial sectional structure schematic diagram of sewage treatment device for the pulping process of sacrificial yellow paper is proposed in the application.

[0023] Figure 9 A kind of precipitation unit main view sectional structure schematic diagram of sewage treatment device for the pulping process of sacrificial yellow paper is proposed in the application.

[0024] Figure 10 A kind of biological treatment unit main view sectional structure schematic diagram of sewage treatment device for the pulping process of sacrificial yellow paper is proposed in the application.

[0025] Figure 11 A kind of aeration mechanism main view structure schematic diagram of sewage treatment device for the pulping process of sacrificial yellow paper is proposed in the application.

[0026] Figure 12 A kind of heat exchange mechanism main view structure schematic diagram of sewage treatment device for the pulping process of sacrificial yellow paper is proposed in the application.

[0027] Figure 13 A kind of heat dissipation mechanism main view structure schematic diagram of sewage treatment device for the pulping process of sacrificial yellow paper is proposed in the application.

[0028] Figure 14 A kind of air supply pipe main view structure schematic diagram of sewage treatment device for the pulping process of sacrificial yellow paper is proposed in the application.

[0029] Figure 15 A depth filtration unit front view cross-sectional structure diagram of a sewage treatment device for a sacrificial yellow paper pulping process is provided.

[0030] In the figure: 1, pretreatment unit; 11, pretreatment tower; 12, water inlet pipe; 13, sewage pipe; 14, transmission mechanism; 141, transmission motor; 142, transmission shaft; 143, lifting column; 144, lifting cylinder; 145, connecting rod; 146, connecting plate; 147, connecting block; 15, filter assembly; 151, mounting ring; 152, elastic filter screen; 153, T-shaped block; 154, sliding block; 155, fixed seat; 156, connecting rod; 16, recovery mechanism; 161, recovery pipe; 162, conveying motor; 163, mounting shaft; 164, spiral blade; 165, fixed block; 2, sedimentation unit; 21, sedimentation tower; 22, tower cover; 23, dosing tank; 24, spiral guide vane; 3, biological treatment unit; 31, aeration tower; 32, aeration mechanism; 321, gas conveying pipe; 322, aeration cover; 323, connecting shaft; 324, guide vane; 33, biological filler; 34, heat exchange mechanism; 341, fixed plate; 342, heat exchange plate; 35, heat dissipation mechanism; 351, fixed frame; 352, mounting plate; 353, heat dissipation fan; 4, depth filtration unit; 41, filter tower; 42, top cover; 43, mounting frame; 44, support layer; 45, activated carbon filter layer; 46, quartz sand layer; 47, drain pipe; 5, water outlet pipe; 6, pH adjusting tank; 7, clean water pipe; 8, air supply pipe; 9, connecting pipe. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all.

[0032] Embodiment 1, refer to Figures 1-2 , Figures 9-10 and Figures 14-15The utility model provides a kind of sewage treatment device for sacrificial yellow paper pulping procedure, including the periphery distribution of pre-treatment unit 1, sedimentation unit 2, biological treatment unit 3 and depth filtration unit 4, pre-treatment unit 1 includes the pre-treatment tower 11 of the upper inner wall of which is fixed with pH sensor, transmission mechanism 14, filter assembly 15 and recovery mechanism 16, the lower inner wall of one side of pre-treatment tower 11 is fixed with water inlet pipe 12, the bottom inner wall of pre-treatment tower 11 is fixed with sewage pipe 13, and the outer wall of the lower part of sewage pipe 13 is equipped with sewage valve, sedimentation unit 2 includes sedimentation tower 21, dosing tank 23 and spiral guide vane 24 welded on the middle inner wall of sedimentation tower 21, the outer wall on the top of sedimentation tower 21 is connected with tower cover 22 by bolt, the bottom inner wall of sedimentation tower 21 is fixed with discharge pipe, and the outer wall of the lower part of discharge pipe is installed with sewage valve, the upper inner wall of pre-treatment cylinder 11 is fixed with water outlet pipe 5, one end of water outlet pipe 5 is fixed on the upper inner wall of sedimentation tower 21, the top inner wall of water outlet pipe 5 is fixed with two pH adjusting tank 6, and the inside of two pH adjusting tank 6 respectively stores acidic treatment liquid and alkaline treatment liquid, and the inside of the end of water outlet pipe 5 close to sedimentation tower 21 is installed with pH sensor, the pH value of the sewage after primary filtration is transmitted to controller in real time by the pH sensor in pre-treatment tower 11, then controller controls two pH adjusting tank 6 to adjust the pH value of the sewage passing through water outlet pipe 5, so that the sewage is neutral, and the pH value of the sewage after treatment is detected by the pH sensor in water outlet pipe 5, biological treatment unit 3 includes aeration tower 31, aeration mechanism 32, biological filler 33 connected to the middle inner wall of aeration tower 31 by bolt, heat exchange mechanism 34 and heat dissipation mechanism 35, the outer wall on the top of aeration tower 31 is connected with sealing cover by bolt, the bottom inner wall of aeration tower 31 is fixed with flange pipe, and the outer wall of the lower part of flange pipe is installed with ball valve, the lower inner wall of sedimentation tower 21 is fixed with clean water pipe 7, the inside of clean water pipe 7 is equipped with electromagnetic valve, one end of clean water pipe 7 is fixed on the lower inner wall of aeration tower 31, the biological filler 33 is three-dimensional elastic filler, which is composed of a plurality of suspended plastic wires, the upper inner wall on one side of aeration tower 31 is fixed with air supply pipe 8, one end of air supply pipe 8 penetrates and is fixed on the lower inner wall of one side of pre-treatment tower 11, and the outer wall on one end of air supply pipe 8 is provided with equidistantly distributed air outlet holes, the bottom end inner wall of air supply pipe 8 is fixed with waterproof air-permeable membrane, depth filtration unit 4 includes filter tower 401, mounting frame 43 connected to the middle inner wall of filter tower 401 by bolt, support layer 44 arranged on the lower inner wall of mounting frame 43, activated carbon filter layer 45 arranged on the middle inner wall of mounting frame 43 and quartz sand layer 46 arranged on the upper inner wall of mounting frame 43, the top outer wall of filter cylinder 42 is connected with top cover 42 by bolt, the bottom inner wall of filter cylinder 42 is fixed with drain pipe 47, the upper inner wall of aeration tower 31 is fixed with connecting pipe 9, one end of connecting pipe 9 is fixed on the upper inner wall of filter tower 41, four function units of pre-treatment, sedimentation, aeration and depth treatment are designed as four independent towers distributed in the periphery, break the traditional linear layout mode,The compact three-dimensional layout reduces the floor area of the equipment, reduces the length and complexity of the connecting pipeline, is particularly suitable for small and medium-sized production enterprises with limited space, the tower type modular design facilitates standardized production, transportation and on-site installation of the equipment, the functions of each tower are clear, and the single tower body can be repaired or maintained when necessary without affecting the operation of other units, thereby improving the maintainability of the equipment.

[0033] Embodiment 2, refer to Figures 3-7 The sewage treatment device for the sacrificial yellow paper pulping process further comprises a transmission mechanism 14, which comprises a transmission motor 141 connected to the outer wall of the top of the pretreatment tower 11 by bolts, a transmission shaft 142 connected to the bottom end of the output shaft of the transmission motor 141 by a shaft coupling, a lifting column 143 connected to the outer wall of the bottom end of the transmission shaft 142 by bolts, a lifting cylinder 144 arranged on the outer wall of the lower part of the lifting column 143, a connecting rod 145 welded to the inner wall of the upper part of the lifting cylinder 144, a connecting plate 146 connected to the outer wall of the bottom of the lifting cylinder 144 by bolts, and four connecting blocks 147 welded to the outer wall of the circumference of the connecting plate 146, respectively. A limiting groove is formed in the outer wall of the circumference of the lifting column 143, and one end of the connecting rod 145 is slidingly installed in the limiting groove. The filter assembly 15 comprises a mounting ring 151 connected to the inner wall of the lower part of the pretreatment tower 11 by bolts, a reverse conical elastic filter screen 152 connected to the inner wall of the mounting ring 151 by bolts, four T-shaped blocks 153 welded to the outer wall of the bottom of the mounting ring 151, respectively, four sliding blocks 154 slidingly installed on the outer wall of the four T-shaped blocks 153, respectively, four fixed seats 155 welded to the outer wall of the bottom of the four sliding blocks 154, respectively, and four connecting rods 156 hingedly connected to the outer wall of the four fixed seats 155, respectively. The elastic filter screen 152 is connected to the top outer wall of the connecting plate 146 by bolts, the bottom ends of the four connecting rods 156 are hingedly connected to the outer walls of the four connecting blocks 147, respectively, and the outer walls of the parts located in the pretreatment tower 11 are sprayed with a layer of silicon carbide coating or polytetrafluoroethylene coating to prevent the acidic sewage from corroding the parts.

[0034] Embodiment 3, refer to Figure 8The application discloses a sewage treatment device for a sacrificial yellow paper pulping process, and a recovery mechanism 16 comprises a recovery pipe 161 connected to the outer wall of the bottom end of a sewage pipe 13 through a flange, a conveying motor 162 connected to the outer wall of one side of the recovery pipe 161 through a bolt, a mounting shaft 163 connected to one end of the output shaft of the conveying motor 162 through a coupling, helical blades 164 welded to the outer wall of the mounting shaft 163, and a fixing block 165 connected to the outer wall of one end of the mounting shaft 163 through a bearing, the bottom of the recovery pipe 161 is provided with filter holes which are distributed at equal distances on the outer wall below the sewage pipe 13, the fixing block 165 is connected to the inner wall of one end of the recovery pipe 161 through a bolt, and the inner wall of the recovery pipe 161, the outer wall of the mounting shaft 163 and the outer wall of the helical blades 164 are all sprayed with a one-side polytetrafluoroethylene coating, so that fibers are prevented from adhering to the inner wall of the recovery pipe 161, the outer wall of the mounting shaft 163 and the outer wall of the helical blades 164 during recovery, and the recovery rate of the fibers is improved.

[0035] Embodiment 4, refer to Figure 11 The application discloses a sewage treatment device for a sacrificial yellow paper pulping process, and an aeration mechanism 32 comprises a gas conveying pipe 321 penetrating through and fixedly arranged on the outer wall of one side of the lower part of an aeration tower 31, an aeration cover 322 connected to the outer wall of the upper part of the gas conveying pipe 321 through a bearing, a connecting shaft 323 welded to the inner wall of the top of the aeration cover 322, and a plurality of guide vanes 324 respectively welded to the outer wall of the connecting shaft 323, a plurality of aeration micro-holes are formed in the outer wall of the upper part of the aeration cover 322, air is conveyed into the gas conveying pipe 321 through a blower, the air enters the aeration cover 322, the air flow drives the guide vanes 324 and the connecting shaft 323 to rotate, and then drives the aeration cover 322 to rotate, meanwhile, the air flow is discharged from the aeration micro-holes on the aeration cover 322, and a rotating air flow is generated in the lower space of the aeration tower 31, so that the air flow is fully contacted with biological filler 33.

[0036] Embodiment 5, refer to Figures 12-13The application discloses a sewage treatment device for a sacrificial yellow paper pulping process, and heat exchange mechanism 34 comprises a plurality of brass heat exchange plates 342, a fixed plate 341 is connected to the inner wall of the upper portion of the aeration tower 31 through bolts, and the plurality of heat exchange plates 342 are respectively welded to the outer wall of the bottom portion of the fixed plate 341; the heat dissipation mechanism 35 comprises a plurality of heat dissipation fans 353, a fixed frame 351 is fixed to the inner wall of one side of the upper portion of the aeration tower 31, an installation plate 352 is connected to the outer wall of one side of the fixed frame 351 through bolts, and the plurality of heat dissipation fans 353 are respectively connected to the outer wall of one side of the installation plate 352 through bolts; the heat exchange plates 342 recycle the waste heat generated by biochemical reactions, the heat dissipation fans 353 transport the heat in the upper portion of the heat exchange plates 342 into the air supply pipe 8, the air supply pipe 8 transports the hot air into the pretreatment tower 11 and preheats the sewage in the lower portion of the pretreatment tower 11, the device is suitable for low-temperature environments, can improve the subsequent biochemical reaction rate and overall processing efficiency, realizes step-by-step utilization of energy, reduces external energy consumption required by system heating, and remarkably reduces operation cost.

[0037] The sewage enters the pretreatment tower 11, the elastic filter screen 152 filters the sewage, removes large-particle fibers and impurities in the sewage, as the liquid level in the pretreatment tower 11 rises, the sewage enters the sedimentation tower 21 along the water outlet pipe 5, the dosing tank 24 adds a flocculating agent into the sedimentation tower 21, the sewage moves along the spiral flow guide vane in the sedimentation tower 21, so that the water flow impact does not cause the precipitate in the lower portion of the sedimentation tower 21 to scatter, the sewage is precipitated in the sedimentation tower 21, the electromagnetic valve in the clean water pipe 7 is periodically opened, clean water in the sedimentation tower 21 is transported into the aeration tower 31, the air supply pipe 321 is supplied with air by the air blower, the air enters the aeration cover 322, the airflow drives the flow guide vane 324 and the connecting shaft 323 to rotate, thereby driving the aeration cover 322 to rotate, meanwhile, the airflow is discharged from the aeration micropores on the aeration cover 322, and the rotating airflow is generated in the lower space of the aeration tower 31, so that the airflow fully contacts the biological filler 33, the heat exchange plates 342 recycle the waste heat generated by biochemical reactions, the heat dissipation fans 353 transport the heat in the upper portion of the heat exchange plates 342 into the air supply pipe 8, the air supply pipe 8 transports the hot air into the pretreatment tower 11 and preheats the sewage in the lower portion of the pretreatment tower 11, as the liquid level in the aeration tower 31 rises, the sewage enters the filter tower 41 along the connecting pipe 9, the quartz sand layer 46, the activated carbon filter layer 45 and the support layer 44 perform deep filtration on the sewage.

[0038] In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0039] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0040] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent replacements or changes within the technical scope disclosed by the present application according to the technical solution and inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A sewage treatment device for a sacrificial yellow paper pulping process, comprising a pretreatment unit (1), a sedimentation unit (2), a biological treatment unit (3), and a depth filtration unit (4) distributed in a circle, characterized in that, The pretreatment unit (1) comprises a pretreatment tower (11) with a pH sensor fixed on the upper inner wall, a transmission mechanism (14), a filter assembly (15) and a recovery mechanism (16), the transmission mechanism (14) comprises a transmission motor (141) bolted to the top outer wall of the pretreatment tower (11), a transmission shaft (142) connected to the bottom end of the output shaft of the transmission motor (141) through a shaft coupling, a lifting column (143) bolted to the bottom outer wall of the transmission shaft (142), a lifting cylinder (144) arranged on the lower outer wall of the lifting column (143), a connecting rod (145) welded to the upper inner wall of the lifting cylinder (144), a connecting plate (146) bolted to the bottom outer wall of the lifting cylinder (144), and four connecting blocks (147) welded to the circumferential outer wall of the connecting plate (146), respectively, a limiting groove is formed in the circumferential outer wall of the lifting column (143), and one end of the connecting rod (145) is slidingly installed in the limiting groove; The filter assembly (15) comprises a mounting ring (151) bolted to the lower inner wall of the pretreatment tower (11), a reverse conical elastic filter screen (152) bolted to the inner wall of the mounting ring (151), four T-shaped blocks (153) welded to the bottom outer wall of the mounting ring (151), respectively, four sliding blocks (154) slidingly installed on the outer wall of the four T-shaped blocks (153), respectively, four fixed seats (155) welded to the bottom outer wall of the four sliding blocks (154), respectively, and four connecting rods (156) hingedly connected to the outer wall of the four fixed seats (155), respectively, the elastic filter screen (152) is bolted to the top outer wall of the connecting plate (146), and the bottom ends of the four connecting rods (156) are hingedly connected to the outer wall of the four connecting blocks (147), respectively; The precipitation unit (2) comprises a precipitation tower (21), a dosing tank (23) and a spiral guide vane (24) welded to the middle inner wall of the precipitation tower (21); The biological treatment unit (3) comprises an aeration tower (31), an aeration mechanism (32), biological fillers (33) bolted to the middle inner wall of the aeration tower (31), a heat exchange mechanism (34) and a heat dissipation mechanism (35), the aeration mechanism (32) comprises a gas delivery pipe (321) penetrating through and fixed to the lower outer wall of one side of the aeration tower (31), an aeration cover (322) connected to the upper outer wall of the gas delivery pipe (321) through a bearing, a connecting shaft (323) welded to the top inner wall of the aeration cover (322), and a plurality of guide vanes (324) welded to the outer wall of the connecting shaft (323), a plurality of aeration micro-holes are formed in the upper circumferential outer wall of the aeration cover (322); The heat exchange mechanism (34) comprises a plurality of heat exchange plates (342) made of brass; The heat dissipation mechanism (35) comprises a plurality of heat dissipation fans (353); The aeration tower (31) is provided with an air supply pipe (8) on one side of the upper inner wall, and one end of the air supply pipe (8) penetrates through and is fixed to one side of the lower inner wall of the pretreatment tower (11), the outer wall of one end of the air supply pipe (8) is provided with air outlet holes distributed at equal distances, and a waterproof air permeable film is fixed to the bottom end inner wall of the air supply pipe (8). The depth filtration unit (4) comprises a filter tower (401), a mounting frame (43) connected to the middle inner wall of the filter tower (401) by bolts, a support layer (44) arranged on the lower inner wall of the mounting frame (43), an activated carbon filter layer (45) arranged on the middle inner wall of the mounting frame (43), and a quartz sand layer (46) arranged on the upper inner wall of the mounting frame (43).

2. The wastewater treatment device for a sacrifice yellow paper pulping process according to claim 1, characterized by The lower inner wall of one side of the pretreatment tower (11) is fixedly provided with a water inlet pipe (12), and the bottom inner wall of the pretreatment tower (11) is fixedly provided with a sewage discharge pipe (13), and the lower outer wall of the sewage discharge pipe (13) is provided with a sewage discharge valve.

3. The wastewater treatment device for a sacrifice yellow paper pulping process according to claim 2, characterized by The recovery mechanism (16) comprises a recovery pipe (161) connected to the bottom end outer wall of the sewage discharge pipe (13) by a flange, a conveying motor (162) connected to one side of the outer wall of the sewage discharge pipe (161) by bolts, a mounting shaft (163) connected to one end of the output shaft of the conveying motor (162) by a coupling, a spiral blade (164) welded to the outer wall of the mounting shaft (163), and a fixing block (165) connected to the outer wall of one end of the mounting shaft (163) by a bearing, the bottom of the recovery pipe (161) is provided with filter holes distributed at equal distances on the outer wall below the sewage discharge pipe (13), and the fixing block (165) is connected to the inner wall of one end of the recovery pipe (161) by bolts.

4. The sewage treatment device for a ritual yellow paper pulping process according to claim 1, characterized in that, The top end outer wall of the precipitation tower (21) is connected with a tower cover (22) by bolts, and the bottom inner wall of the precipitation tower (21) is fixedly provided with a discharge pipe, and the lower outer wall of the discharge pipe is provided with a sewage discharge valve.

5. The wastewater treatment device for a process of pulping a sacrifice yellow paper according to claim 1, characterized in that, The top outer wall of the aeration tower (31) is connected with a sealing cover by bolts, and the bottom inner wall of the aeration tower (31) is fixedly provided with a flange pipe, and the lower outer wall of the flange pipe is provided with a ball valve.

6. The sewage treatment device for a ritual yellow paper pulping process according to claim 1, characterized in that, The upper inner wall of the aeration tower (31) is connected with a fixing plate (341) by bolts, and a plurality of heat exchange plates (342) are respectively welded to the bottom outer wall of the fixing plate (341).

7. The wastewater treatment device for a ritual yellow paper pulping process according to claim 1, characterized by The upper inner wall of the aeration tower (31) is fixedly provided with a fixing frame (351), and the outer wall of one side of the fixing frame (351) is connected with a mounting plate (352) by bolts, and a plurality of cooling fans (353) are respectively connected to the outer wall of one side of the mounting plate (352) by bolts.

8. The wastewater treatment device for a ritual yellow paper pulping process according to claim 1, characterized by The top outer wall of the filter tower (41) is connected with a top cover (42) by bolts, and the bottom inner wall of the filter cylinder (42) is fixedly provided with a drain pipe (47).

9. The wastewater treatment device for a ritual yellow paper pulping process according to claim 1, characterized by The water outlet pipe (5) is fixed on the upper inner wall of the pre-treatment cylinder (11), and one end of the water outlet pipe (5) is fixed on the upper inner wall of the precipitation tower (21); two pH adjusting tanks (6) are fixed on the top inner wall of the water outlet pipe (5); the clear water pipe (7) is fixed on the lower inner wall of the precipitation tower (21), and one end of the clear water pipe (7) is fixed on the lower inner wall of the aeration tower (31); the connecting pipe (9) is fixed on the upper inner wall of the aeration tower (31), and one end of the connecting pipe (9) is fixed on the upper inner wall of the filter tower (41).

Images