Cigarette factory production wastewater pretreatment device

Abstract

The utility model provides a cigarette factory production wastewater pretreatment device, and relates to the technical field of wastewater treatment. The cigarette factory production wastewater pretreatment device comprises a first filter tank, a sedimentation tank, an oxidation tank, a second filter tank and a purification tank which are connected in sequence, the first filter tank and the second filter tank are the same in structure and each comprise a tank body, a filter cartridge, a rotating shaft and a rotating motor, and the rotating motor is installed at the top of the tank body; the output end of the rotating motor extends into the box body and is connected with one end of the rotating shaft, the other end of the rotating shaft is connected with the filter cartridge, the filter cartridge comprises an inner filter cartridge and an outer filter cartridge, and the aperture of a filter hole of the outer filter cartridge is smaller than that of a filter hole of the inner filter cartridge. The filtering effect can be improved, the purification effect is enhanced, and damage of waste water to the environment is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a pretreatment device for production wastewater of a cigarette factory. Background Art

[0002] At present, the sources of wastewater generated in the production process of cigarettes are mainly dust removal water, boiler room slag flushing water, tobacco leaf rewetting wastewater and domestic wastewater. This type of wastewater contains more suspended matter, nicotine, oil, sugar and other pollutants, causing various indicators in the water to increase. If the wastewater is discharged directly, the pollutants will be adsorbed and deposited by the bottom sediment of the water body, and cause toxic effects on aquatic organisms in the water body.

[0003] In the prior art, filtration is usually performed using a grid plate, which has a low filtration efficiency and is prone to clogging, affecting the filtration effect of the grid plate. Most of the pollutants in the wastewater can be removed by filtration, but there are still a considerable number of pollutants, high-concentration phosphorus nutrients and salts in the sewage that cannot be removed. The purification effect is not good enough, the filtration treatment is not thorough enough, and direct discharge will still cause serious damage to the aquatic environment. Utility Model Content

[0004] The utility model aims to provide a cigarette factory production wastewater pretreatment device, which can improve the filtering effect, enhance the purification effect, and effectively avoid the damage of wastewater to the environment.

[0005] The embodiments of the present invention are implemented by the following technical solutions:

[0006] A cigarette factory production wastewater pretreatment device comprises a first filter box, a sedimentation tank, an oxidation tank, a second filter box and a purification box connected in sequence, the first filter box and the second filter box have the same structure, both comprising a box body, a filter cartridge, a rotating shaft and a rotating motor, the rotating motor is installed on the top of the box body, the output end of the rotating motor extends into the box body and is connected to one end of the rotating shaft, the other end of the rotating shaft is connected to the filter cartridge, the filter cartridge comprises an inner filter cartridge and an outer filter cartridge, the filter hole diameter of the outer filter cartridge is smaller than the filter hole diameter of the inner filter cartridge.

[0007] Furthermore, the sedimentation tank is provided with a stirring assembly, which includes a stirring motor, a stirring shaft, a stirring rod and a medicine bag. The stirring motor is installed on the outer side of the sedimentation tank, and the output end of the stirring motor extends to the sedimentation tank and is connected to the stirring shaft. A plurality of stirring rods are provided on the stirring shaft, and the medicine bag is installed at one end of the stirring rod away from the stirring shaft.

[0008] Furthermore, a sharp portion is provided at one end of the stirring rod away from the stirring shaft.

[0009] Further, a plurality of microbial attachment plates are arranged in the oxidation tank, and a plurality of drainage micropores are formed in each microbial attachment plate. A plurality of aeration pipes are arranged at the bottom of the oxidation tank, and each aeration pipe is communicated with the inside of the oxidation tank.

[0010] Further, a plurality of liquid discharge ports are arranged on the side walls of the sedimentation tank and the oxidation tank, and slag discharge ports are arranged at the bottoms of the sedimentation tank and the oxidation tank.

[0011] Further, the plurality of liquid discharge ports include a high-level liquid discharge port, a middle-level liquid discharge port, and a low-level liquid discharge port.

[0012] Further, a first filter layer, a resin layer, and a second filter layer are sequentially arranged in the purification box from top to bottom. The first filter layer includes three layers of quartz sand with different particle sizes, and the second filter layer includes three layers of activated carbon with different particle sizes. The particle size of the quartz sand gradually decreases from top to bottom, and the particle size of the activated carbon gradually decreases from top to bottom.

[0013] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0014] In the present invention, through the cooperation of the box body, the inner filter cylinder, the outer filter cylinder, the rotating shaft, and the rotating motor, the wastewater is input into the filter cylinder, first filtered by the inner filter cylinder for the first time, and then filtered by the outer filter cylinder for the second time, which can improve the filtering effect. At the same time, the rotating motor drives the rotating shaft to rotate, the rotating shaft drives the filter cylinder to rotate, so that the inner filter cylinder and the outer filter cylinder rotate, accelerating the filtering speed. And during the rotation process, the wastewater can wash away the impurities adhering to the filter holes, preventing the filter holes from being blocked, and further improving the filtering effect and filtering efficiency. The wastewater passing through the first filter box is settled in the sedimentation tank to remove pollutants, then oxidized and degraded in the oxidation tank to remove pollutants, filtered by the second filter box to remove impurities, and finally adsorbed and separated from pollutants by the purification box. The device can improve the filtering and purification effect of wastewater through multi-stage filtering, sedimentation, degradation, and adsorption separation, can significantly reduce the pollutants in the wastewater, and is beneficial to environmental protection. Description of the Drawings

[0015] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings required for use in the embodiment will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic structural diagram of a device for pretreating wastewater from a cigarette factory provided in Embodiment 1 of the present invention;

[0017] Figure 2 This is a schematic structural diagram of the stirring rod provided in Embodiment 1 of the present utility model.

[0018] Icon: 1 - First filtration tank, 2 - Sedimentation tank, 3 - Oxidation tank, 4 - Second filtration tank, 5 - Purification tank, 11 - Box body, 12 - Rotating motor, 13 - Rotating shaft, 14 - Outer filter cylinder, 15 - Inner filter cylinder, 21 - Stirring motor, 22 - Stirring shaft, 23 - Stirring rod, 24 - Reagent bag, 25 - High-level liquid discharge port, 26 - Middle-level liquid discharge port, 27 - Low-level liquid discharge port, 31 - Microbe attachment plate, 32 - Aeration pipe, 33 - Air distribution plate, 34 - Main air pipe, 35 - Aeration pump, 51 - First filtration layer, 52 - Resin layer, 53 - Second filtration layer, 231 - Sharp part. Detailed implementation manners

[0019] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0021] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0022] In the description of the present utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings or the orientation or positional relationship when the product of this application is usually placed. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0023] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, if the terms "set", "installed", "connected", and "coupled" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0024] Embodiment 1

[0025] As Figure 1-2 shown, this embodiment provides a pretreatment device for the production wastewater of a cigarette factory, which includes a first filter tank 1, a sedimentation tank 2, an oxidation tank 3, a second filter tank 4, and a purification tank 5 connected in sequence. The first filter tank 1 and the second filter tank 4 have the same structure, and both include a tank body 11, a filter cylinder, a rotating shaft 13, and a rotating motor 12. The rotating motor 12 is installed on the top of the tank body 11, and the output end of the rotating motor 12 extends into the tank body 11 and is connected to one end of the rotating shaft 13. The other end of the rotating shaft 13 is connected to the filter cylinder. The filter cylinder includes an inner filter cylinder 15 and an outer filter cylinder 14, and the pore diameter of the filter holes of the outer filter cylinder 14 is smaller than that of the inner filter cylinder 15.

[0026] Through the cooperation of the tank body 11, the inner filter cylinder 15, the outer filter cylinder 14, the rotating shaft 13, and the rotating motor 12, the wastewater is input into the filter cylinder. First, it passes through the inner filter cylinder 15 for primary filtration, and then through the outer filter cylinder 14 for secondary filtration, which can improve the filtration effect. At the same time, the rotating motor 12 drives the rotating shaft 13 to rotate, and the rotating shaft 13 drives the filter cylinder to rotate, so that the inner filter cylinder 15 and the outer filter cylinder 14 rotate synchronously, accelerating the filtration speed. And during the rotation process, the wastewater can wash away the impurities adhering to the filter holes, preventing the filter holes from being blocked, and further improving the filtration effect and filtration efficiency. The wastewater passing through the first filter tank 1 settles in the sedimentation tank 2 to remove pollutants, and then is oxidized and degraded in the oxidation tank 3 to remove pollutants, and then passes through the second filter tank 4 to filter out impurities, and finally passes through the purification tank 5 to adsorb and separate pollutants. This device can improve the filtration and purification effect of wastewater through multi-stage filtration, sedimentation, degradation, and adsorption separation, can significantly reduce the pollutants in the wastewater, and is beneficial to environmental protection. In some embodiments, the inner filter cylinder 15 and the outer filter cylinder 14 of the second filter tank 4 are both ultrafiltration membranes, which can remove fine suspended particles, colloids, macromolecular organic substances, and inorganic substances, improving the purification effect of the wastewater.

[0027] In this embodiment, the sedimentation tank 2 is provided with a stirring assembly. The stirring assembly includes a stirring motor 21, a stirring shaft 22, stirring rods 23 and a reagent bag 24. The stirring motor 21 is installed on the outer side of the sedimentation tank 2, and the output end of the stirring motor 21 extends into the sedimentation tank 2 and is connected to the stirring shaft 22. A plurality of stirring rods 23 are arranged on the stirring shaft 22, and the reagent bag 24 is installed at one end of the stirring rod 23 away from the stirring shaft 22. Among them, the reagent bag 24 contains a flocculant, and the reagent bag 24 is provided with an opening. During use, the stirring motor 21 drives the stirring shaft 22 to rotate, the stirring shaft 22 drives the stirring rods 23 to rotate, and the reagent bag 24 on the stirring rod 23 rotates in the sedimentation tank 2. The reagent in the reagent bag 24 overflows during rotation and mixes with the wastewater in the sedimentation tank 2 to form flocculent precipitates, which settle in the sedimentation tank 2. Compared with mixing after adding the reagent, such a setting can improve the mixing degree and mixing speed of the reagent and the wastewater, which helps to improve the flocculation speed and enhance the flocculation effect.

[0028] In this embodiment, a sharp part 231 is arranged at one end of the stirring rod 23 away from the stirring shaft 22. The sharp part 231 is used to pierce the reagent bag 24 to accelerate the overflow of the reagent in the reagent bag 24, improve the flocculation speed of the reagent and the wastewater, and accelerate the wastewater treatment efficiency.

[0029] In this embodiment, a plurality of microbial attachment plates 31 are arranged in the oxidation tank 3. A number of drainage micropores are formed on each microbial attachment plate 31, and a number of air diffuser pipes 32 are arranged at the bottom of the oxidation tank 3. Each air diffuser pipe 32 is communicated with the inside of the oxidation tank 3. Among them, a number of clamping grooves are formed at the bottom of the oxidation tank 3, and the microbial attachment plates 31 are inserted into the clamping grooves, and the distance between adjacent microbial attachment plates 31 can be adjusted. According to the wastewater treatment requirements, the microbial attachment plates 31 can be replaced and adjusted. Anaerobic microorganisms are on the microbial attachment plates 31 during anaerobic treatment, and aerobic microorganisms are on the microbial attachment plates 31 during aerobic treatment, so as to facilitate the anaerobic treatment or aerobic treatment of the wastewater. And during aerobic treatment, oxygen can be provided into the oxidation tank 3 through the air diffuser pipes 32 to improve the oxidation effect of aerobic microorganisms and accelerate the degradation speed of pollutants in the wastewater. Each air diffuser pipe 32 is connected to a gas distribution plate 33, and the gas distribution plate 33 is connected to the output end of an air pump 35 through a main air pipe 34.

[0030] In this embodiment, a plurality of liquid discharge ports are provided on the side walls of the sedimentation tank 2 and the oxidation tank 3, and slag discharge ports are provided at the bottoms of the sedimentation tank 2 and the oxidation tank 3. Among them, the plurality of liquid discharge ports include a high-level liquid discharge port 25, a middle-level liquid discharge port 26, and a low-level liquid discharge port 27. Valves are provided on the high-level liquid discharge port 25, the middle-level liquid discharge port 26, and the low-level liquid discharge port 27, and the valves control their opening and closing. Such a setting can open or close the liquid discharge ports according to the sedimentation situation in the sedimentation tank 2 and the oxidation situation in the oxidation tank 3 (i.e., the clarification situation of the wastewater), thereby improving the treatment effect. After the treatment of the sedimentation tank 2 and the oxidation tank 3 is completed, the sediment is discharged through the slag discharge port for the next use.

[0031] In this embodiment, a first filter layer 51, a resin layer 52, and a second filter layer 53 are sequentially arranged in the purification tank 5 from top to bottom. The first filter layer 51 includes three layers of quartz sand with different particle sizes, and the second filter layer 53 includes three layers of activated carbon with different particle sizes. Moreover, the particle size of the quartz sand gradually decreases from top to bottom, and the particle size of the activated carbon gradually decreases from top to bottom. Through the gradient filtration of the quartz sand, large-sized impurities remaining in the liquid can be intercepted to prevent them from entering the resin layer 52 and affecting resin adsorption. The resin layer 52 can be used to adsorb and separate the liquid containing salt and phosphorus. By using the gradient filtration of the activated carbon, the odor, color, organic substances, inorganic substances, and free chlorine in the liquid can be removed, and at the same time, resin leakage can be prevented, further improving the treatment effect on the wastewater.

[0032] The working principle of a wastewater pretreatment device for a cigarette factory is as follows: The wastewater is conveyed into the inner filter cylinder 15 of the first filter box 1. The rotation motor 12 is started, and the rotation motor 12 drives the rotation shaft 13 to rotate. The rotation shaft 13 synchronously drives the inner filter cylinder 15 and the outer filter cylinder 14 to rotate to achieve double filtration. The filtered liquid enters the sedimentation tank 2. The stirring motor 21 is started, and the stirring motor 21 drives the stirring shaft 22 to rotate. The stirring shaft 22 drives the stirring rod 23 to rotate, and the stirring rod 23 drives the medicine bag 24 to rotate. During the rotation process, the sharp part 231 on the stirring rod 23 pierces the medicine bag 24 to make the medicine in the bag overflow, so that the medicine is mixed with the liquid to form flocculent precipitation. The precipitated liquid enters the oxidation tank 3, and the microorganisms on the microorganism attachment plate 31 are mixed with the liquid to degrade and separate the pollutants in the liquid. The oxidized liquid enters the inner filter cylinder 15 of the second filter box 4 and is filtered again through the inner filter cylinder 15 and the outer filter cylinder 14. The filtered liquid enters the purification tank 5 and sequentially passes through the first filter layer 51, the resin layer 52, and the second filter layer 53, and is discharged from the bottom of the purification tank 5 after multi-stage filtration.

[0033] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A cigarette factory wastewater pretreatment device, characterized in that: It includes a first filter box, a sedimentation tank, an oxidation tank, a second filter box and a purification box connected in sequence. The first filter box and the second filter box have the same structure and both include a box body, a filter cartridge, a rotating shaft and a rotating motor. The rotating motor is installed on the top of the box body. The output end of the rotating motor extends into the box body and is connected to one end of the rotating shaft. The other end of the rotating shaft is connected to the filter cartridge. The filter cartridge includes an inner filter cartridge and an outer filter cartridge. The filter hole diameter of the outer filter cartridge is smaller than the filter hole diameter of the inner filter cartridge.

2. The cigarette factory wastewater pretreatment device according to claim 1, characterized in that: The sedimentation tank is provided with a stirring assembly, which includes a stirring motor, a stirring shaft, a stirring rod and a medicine bag. The stirring motor is installed on the outer side of the sedimentation tank, and the output end of the stirring motor extends to the sedimentation tank and is connected to the stirring shaft. A plurality of stirring rods are provided on the stirring shaft, and the medicine bag is installed at one end of the stirring rod away from the stirring shaft.

3. The cigarette factory wastewater pretreatment device according to claim 2, characterized in that: A sharp portion is arranged at one end of the stirring rod away from the stirring shaft.

4. The cigarette factory wastewater pretreatment device according to claim 1, characterized in that: A plurality of microorganism attachment plates are arranged in the oxidation pond, each of which is provided with a plurality of drainage micropores. A plurality of aeration pipes are arranged at the bottom of the oxidation pond, each of which is connected with the interior of the oxidation pond.

5. The cigarette factory wastewater pretreatment device according to claim 1, characterized in that: A plurality of liquid discharge ports are arranged on the side walls of the sedimentation tank and the oxidation tank, and a slag discharge port is arranged at the bottom of the sedimentation tank and the oxidation tank.

6. The cigarette factory wastewater pretreatment device according to claim 5, characterized in that: The plurality of drain ports include a high drain port, a middle drain port and a low drain port.

7. The cigarette factory wastewater pretreatment device according to claim 1, characterized in that: The purification box is provided with a first filter layer, a resin layer and a second filter layer from top to bottom. The first filter layer includes three layers of quartz sand with different particle sizes, and the second filter layer includes three layers of activated carbon with different particle sizes. The particle size of the quartz sand gradually decreases from top to bottom, and the particle size of the activated carbon gradually decreases from top to bottom.

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