Multistage filtering device for acidic sewage

Abstract

The utility model relates to the technical field of acidic sewage treatment, in particular to a multistage filtering device for acidic sewage, which comprises a base, a reservoir fixed on the base, a mounting seat and a filtering device I. A water pump and a booster pump communicated with a water guide end of the water pump are mounted on the back of the mounting seat. An activated carbon filter cartridge communicated with the water pumping end of the water pump is fixed at the bottom of the booster pump, and a water pumping pipe communicated with the reservoir and extending to the bottom is fixed at the water inlet end of the activated carbon filter cartridge. According to the multistage filtering device for the acidic sewage, the sewage is guided out through the water pump and the water pumping pipe and guided into the activated carbon filter cartridge to be filtered, organic matter and peculiar smell in the sewage are filtered out, the filtered sewage is guided into the reverse osmosis filter cartridge through cooperation of the booster pump, and heavy metal in the sewage is filtered out; and then the water enters the filtering device I to be filtered and then is discharged, so that the filtering effect can be improved through multi-stage filtering, and the filtering efficiency can also be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of acid sewage treatment, in particular to a multi-stage filtering device for acid sewage. Background Technique

[0002] In the process of waste nitric acid recovery and treatment, the main pollutants are the noise and acid sewage generated by mechanical equipment, as well as domestic sewage, domestic garbage, floor and equipment cleaning wastewater of production workers and sediment generated by waste nitric acid storage tanks. Therefore, when discharging through acid sewage, it needs to be filtered to avoid polluting the environment.

[0003] Traditional acid sewage treatment methods mainly include neutralization method, precipitation method, etc. Although these methods can remove acid substances and some heavy metals to a certain extent, there are certain limitations in treatment efficiency and subsequent treatment. For example, single chemical neutralization treatment is often difficult to completely remove heavy metal ions in sewage, while conventional precipitation method may require a large floor area and a long residence time. Content of the Utility Model

[0004] To achieve the above object, the utility model provides the following technical solution: a multi-stage filtering device for acid sewage, including a base, a water storage tank, a mounting seat and a first filtering device fixed on the base. A water pump is installed on the back of the mounting seat, and a booster pump connected to the water guiding end of the water pump is installed. The bottom of the booster pump is fixed with an activated carbon filtering cylinder connected to the water pumping end of the water pump. The water inlet end of the activated carbon filtering cylinder is fixed with a water suction pipe connected to the water storage tank and extending to the bottom. The top of the water pump is fixed with a reverse osmosis filtering cylinder connected to the booster pump. The reverse osmosis filtering cylinder is connected to the first filtering device through a pipeline, and a drain pipe is fixed on the outside of the first filtering device.

[0005] Further, a stirring blade is rotatably connected inside the water storage tank, and a belt transmission device connected to the stirring blade is installed on the base.

[0006] Further, a partition net is fixed inside the water storage tank and a slag discharge pipe is fixed outside. The water storage tank is divided into a water filtering area and a stirring area by the partition net. One end of the slag discharge pipe extends to the stirring area, and the water suction pipe is located in the water filtering area.

[0007] Further, a water pump is also installed at one end of the front of the mounting seat. Stainless steel filtering cylinders are fixed at both the water pumping end and the water outlet end of the water pump. The water inlet end of the stainless steel filtering cylinder at the bottom is fixed with a lower conduit connected to the water storage tank and extending to the water filtering area. A second filtering device connected to the stainless steel filtering cylinder at the top is fixed on the top of the base, and a lower return pipe connected to the water storage tank is fixed on the outside of the second filtering device.

[0008] Further, a water pump is also installed at the other end of the front surface of the mounting base. Stainless steel filter cylinders are fixed to both the water pumping end and the water outlet end of the water pump. The water inlet end of the stainless steel filter cylinder at the bottom is fixed with a middle conduit that communicates with the reservoir and extends to the water filtration area. A third filtration device that communicates with the stainless steel filter cylinder at the top is fixed to the top of the base, and an upper return pipe that communicates with the reservoir is fixed to the outside of the third filtration device.

[0009] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0010] For this multi-stage filtration device for acidic sewage, sewage is discharged through a water pump and a water suction pipe and guided into an activated carbon filter cylinder for filtration to filter out organic substances and odors in the sewage. With the cooperation of a booster pump, the filtered sewage is guided into a reverse osmosis filter cylinder to filter heavy metals in the sewage, and then the water enters the first filtration device for filtration and discharge. Therefore, the filtration effect can be improved through multi-stage filtration, and the filtration efficiency can also be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the present utility model;

[0012] Figure 2 is a rear three-dimensional view of the present utility model.

[0013] In the figure: 1, base; 2, reservoir; 3, partition net; 4, belt transmission device; 5, stirring blade; 6, mounting base; 7, water pump; 8, stainless steel filter cylinder; 9, activated carbon filter cylinder; 10, water suction pipe; 11, first filtration device; 12, second filtration device; 13, third filtration device; 14, upper return pipe; 15, lower return pipe; 16, middle conduit; 17, lower conduit; 18, slag discharge pipe; 19, drain pipe; 20, reverse osmosis filter cylinder; 21, booster pump. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] 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. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0015] Please refer to Figure 1-2, A multi-stage filtration device for acidic sewage in this embodiment includes a base 1. On the top of the base 1, a reservoir 2, a mounting seat 6, and a first filtration device 11 are fixedly arranged in sequence from left to right. The mounting seat 6 is in an H shape. At the right end of the back surface of the mounting seat 6, a water pump 7 is installed, and at the left end of the back surface, a booster pump 21 connected to the water guiding end at the top of the water pump 7 is installed. At the bottom of the booster pump 21, an activated carbon filter cylinder 9 connected to the water pumping end of the water pump 7 is fixed. At the water inlet end of the activated carbon filter cylinder 9, a water suction pipe 10 connected to the reservoir 2 and extending to the bottom is fixed. At the top of the water pump 7, a reverse osmosis filter cylinder 20 connected to the water guiding end of the booster pump 21 is fixed. The water outlet end of the reverse osmosis filter cylinder 20 is communicated with the top of the outside of the first filtration device 11 through a pipeline. At the bottom of the outside of the first filtration device 11, a drain pipe 19 is fixed.

[0016] In the above structure, the discharged acidic sewage is stored in the reservoir. Through the cooperation of the water pump and the booster pump, the sewage in the reservoir is led out through the water suction pipe, and is sequentially treated by the activated carbon filter cylinder for the organic matters and odors in the sewage, and then introduced into the reverse osmosis filter cylinder. The high pressure is used to push the sewage through the semi-permeable membrane. Since the membrane pore size is very small, heavy metal ions can be effectively blocked, and only water molecules are allowed to pass through. Then the water molecules will enter the first filtration device for filtration and be discharged through the drain pipe. Therefore, the filtration effect and efficiency can be improved through multi-stage filtration.

[0017] Among them, a stirring blade 5 is rotatably connected to the right side wall of the reservoir 2, and a belt drive device 4 for driving the stirring blade 5 to rotate is installed on the base 1. By providing power through the belt drive device, the stirring blade can be driven to rotate, so as to stir the sewage in the reservoir. Before stirring, a flocculant can be added into the reservoir. Under the action of stirring, the flocculant can fully react with the water in the reservoir.

[0018] In addition, a partition net 3 is fixed inside the reservoir 2 and a slag discharge pipe 18 is fixed on the front surface. The reservoir 2 is divided into a filtration area and a stirring area by the partition net 3. The stirring blade 5 is located in the stirring area. One end of the slag discharge pipe 18 extends to the stirring area. The water suction pipe 10 is located in the filtration area. The right side at the bottom of the reservoir 2 is inclined. When the sewage in the stirring area aggregates the smaller suspended particles in the water together to form larger lumps through the flocculant, these lumps are easier to settle or be filtered out. Therefore, the lumps can be blocked in the stirring area through the partition net, which is convenient for leading out the treated sewage through the filtration area.

[0019] Further, in order to improve the filtering effect, a second filtering device 12 and a third filtering device 13 are fixed on the top of the base 1. Two protruding ends on the front surface of the installation seat 6 are respectively installed with water pumps 7. The water inlet ends and the water outlet ends of the two water pumps 7 are respectively fixed with stainless steel filter cylinders 8. The water outlet ends of the two stainless steel filter cylinders 8 at the top are respectively communicated with the tops outside the second filtering device 12 and the third filtering device 13 through pipelines. The water inlet end of the stainless steel filter cylinder 8 on the left side at the bottom is fixed with a lower conduit 17 that is communicated with the reservoir 2 and extends to the water filtering area. The water inlet of the lower conduit 17 is located at the lower one-third of the front surface of the reservoir 2. The water inlet end of the stainless steel filter cylinder 8 on the right side at the bottom is fixed with a middle conduit 16 that is communicated with the reservoir 2. The water inlet of the middle conduit 16 is located at the middle position of the front surface of the reservoir 2. One-third of the way from the bottom of the outside of the second filtering device 12 is fixed with a lower return pipe 15 that is communicated with the reservoir 2 and extends to the water filtering area. The lower return pipe 15 is located above the middle conduit 16. One-third of the way from the bottom of the outside of the third filtering device 13 is fixed with an upper return pipe 14 that is communicated with the reservoir 2. The upper return pipe 14 is located above the lower return pipe 15. Through the operation of the water pumps, the sewage at the bottom and the middle of the water filtering area is respectively pumped out through the lower conduit and the middle conduit. The impurity degree at the bottom is greater than that in the middle. Therefore, the sewage is filtered by the stainless steel filter cylinder at the bottom and then introduced into the stainless steel filter cylinder at the upper part for filtering. After the filtering is completed, it is introduced into the water filtering area of the reservoir again after being filtered by the second filtering device and the third filtering device. Therefore, during the process of discharging outwards, the sewage can be firstly filtered through multi-stage water circulation to improve the sewage in the reservoir in advance. Thus, when the water extraction pipe discharges the sewage, it can be processed through multi-stage treatment again, which can effectively improve the filtering effect and efficiency, and reduce the load on the activated carbon filter cylinder, the reverse osmosis filter cylinder and the first filtering device, and improve the service life.

[0020] The working principle of the above embodiment is as follows:

[0021] First, inject the acidic sewage into the stirring area of the reservoir, then introduce the flocculant. The belt drive device runs to drive the stirring blades to fully mix the sewage and the flocculant, making the impurities in the sewage form lumps. The lumps stay in the stirring area. At the same time, the two water pumps on the front surface run first, pumping out the sewage in the water filtering area through the lower conduit and the middle conduit. The sewage is filtered by the upper and lower stainless steel filter cylinders and then introduced into the second filtering device and the third filtering device for filtering the sewage, and then discharged again into the water filtering area of the reservoir. The water in the reservoir is filtered through cyclic treatment. When the cycle runs for a period of time, then run the water pumps and the booster pump on the back surface, and export the water source in the water filtering area through the water extraction pipe. The water source is first filtered by the activated carbon filter cylinder and then introduced into the reverse osmosis filter cylinder for further filtering. After filtering, it is filtered by the first filtering device and then the water source is exported through the drain pipe. At the same time, the slag discharge pipe can export the lump impurities in the reservoir.

[0022] In summary, it is possible to first perform pretreatment and multi-stage circulation treatment on the reservoir, and then cooperate with multi-stage filtration to filter the sewage, thereby improving the treatment effect and efficiency of sewage treatment.

[0023] The entire work process is completed, and the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0024] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0025] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage filtration device for acidic sewage, characterized in that: The invention comprises a base (1), a water reservoir (2), a mounting seat (6) and a filtering device (11) fixed on the base (1), a water pump (7) and a booster pump (21) connected to the water guide end of the water pump (7) installed on the back of the mounting seat (6), an activated carbon filter cartridge (9) connected to the water pumping end of the water pump (7) fixed to the bottom of the booster pump (21), a water pumping pipe (10) connected to the water reservoir (2) and extending to the bottom fixed to the water inlet end of the activated carbon filter cartridge (9), a reverse osmosis filter cartridge (20) connected to the booster pump (21) fixed to the top of the water pump (7), the reverse osmosis filter cartridge (20) connected to the filtering device (11) via a pipeline, and a drainage pipe (19) fixed to the outside of the filtering device (11).

2. The multi-stage filtration device for acidic sewage according to claim 1, characterized in that: The water reservoir (2) is rotatably connected to a stirring blade (5), and the base (1) is provided with a belt transmission device (4) which is transmission-connected to the stirring blade (5).

3. The multi-stage filtration device for acidic sewage according to claim 2, characterized in that: A partition net (3) is fixed on the inner side of the water reservoir (2) and a slag discharge pipe (18) is fixed on the outer side, and the water reservoir (2) is divided into a water filtration area and a stirring area by the partition net (3), one end of the slag discharge pipe (18) extends to the stirring area, and the water pumping pipe (10) is located in the water filtration area.

4. The multi-stage filtration device for acidic sewage according to claim 3, characterized in that: A water pump (7) is also installed at one end of the front of the mounting seat (6), and a stainless steel filter cartridge (8) is fixed to both the water pump end and the water outlet end of the water pump (7). A lower conduit (17) connected to the water reservoir (2) and extending to the water filtration area is fixed to the water inlet end of the bottom stainless steel filter cartridge (8), and a filter device 2 (12) connected to the top stainless steel filter cartridge (8) is fixed to the top of the base (1), and a lower return pipe (15) connected to the water reservoir (2) is fixed to the outside of the filter device 2 (12).

5. The multi-stage filtration device for acidic sewage according to claim 4, characterized in that: A water pump (7) is also installed at the other end of the front of the mounting seat (6). A stainless steel filter cartridge (8) is fixed to the water pump end and the water outlet end of the water pump (7). A middle conduit (16) connected to the water reservoir (2) and extending to the water filtration area is fixed to the water inlet end of the bottom stainless steel filter cartridge (8). A filter device three (13) connected to the top stainless steel filter cartridge (8) is fixed to the top of the base (1). An upper return pipe (14) connected to the water reservoir (2) is fixed to the outside of the filter device three (13).

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