Pretreatment device for industrial wastewater

Abstract

The utility model relates to the technical field of industrial wastewater, and discloses an industrial wastewater pretreatment device which comprises a pretreatment box, an inlet pipe is arranged at the top of the pretreatment box, an outlet pipe is arranged at the bottom of the pretreatment box, a lower drawing frame and an upper drawing frame are arranged on the pretreatment box from bottom to top, adsorption particles are filled in the lower drawing frame, and a filtering assembly is arranged in the upper drawing frame. The filter assembly comprises a bottom plate, a third-stage filter screen is arranged in the center of the bottom plate, a second-stage mesh enclosure is arranged on the outer side of the third-stage filter screen, a first-stage mesh enclosure is arranged on the outer side of the second-stage mesh enclosure, and a cover plate is arranged above the first-stage mesh enclosure and the second-stage mesh enclosure. And the filtering assembly can effectively screen out suspended matters and large-particle matters in the wastewater, so that the burden of a subsequent treatment process is reduced, and the overall treatment efficiency is improved. Meanwhile, by arranging the filter screens with different pore diameters, graded filtration can be realized, and the filtration precision and effect are further improved. The device is simple in structure and convenient to maintain, the maintenance cost is reduced, and the possibility of secondary pollution is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial waste water, in particular to a pretreatment device for industrial waste water. Background Art

[0002] Industrial wastewater has a complex composition and contains a variety of harmful substances. Direct discharge poses a serious threat to the environment and human health. Currently, industrial wastewater treatment technologies primarily include physical, chemical, and biological methods. Physical methods remove suspended solids and large particles from wastewater through sedimentation and filtration; chemical methods remove harmful chemicals through neutralization and redox reactions; and biological methods utilize the metabolic activity of microorganisms to degrade organic matter in wastewater.

[0003] The Chinese patent application, with patent number 201821904106.4 and publication number CN209619085U, discloses an industrial wastewater pretreatment device comprising a sponge iron electrochemical reduction device, a ferrate chemical oxidation device, and an electrochemical degradation device. The device comprises two sponge iron electrochemical reduction devices and two ferrate chemical oxidation devices. The wastewater inlet is connected to pipelines of the first electrochemical degradation device and the first sponge iron electrochemical reduction device. The outlet of the first electrochemical degradation device is connected to the inlet pipeline of the second sponge iron electrochemical reduction device. The outlet of the first sponge iron electrochemical reduction device is connected to the inlet pipeline of the second electrochemical degradation device. The outlets of the second and second sponge iron electrochemical reduction devices are both connected to the inlet pipelines of the electrochemical degradation devices. This device combines three processes: sponge iron electrochemical reduction, ferrate chemical oxidation, and BDD electrochemical degradation, enabling comprehensive wastewater treatment.

[0004] While the aforementioned patented technology improves industrial wastewater treatment efficiency to a certain extent, it is complex in structure, has high maintenance costs, and can generate secondary pollution during the treatment process. Furthermore, pretreatment cannot efficiently and quickly remove impurities from wastewater, increasing the burden on subsequent treatment processes and impacting overall treatment effectiveness.

[0005] Therefore, based on the above technical problems, it is necessary for technicians in this field to develop a pretreatment device for industrial wastewater. Utility Model Content

[0006] The purpose of this utility model is to provide a pretreatment device for industrial wastewater to solve the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A technical solution for a pretreatment device for industrial wastewater includes a pretreatment box, wherein the top of the pretreatment box is provided with an inlet pipe, the bottom is provided with an outlet pipe, the pretreatment box is provided with a lower pull-out frame and an upper pull-out frame from bottom to top, the lower pull-out frame is filled with adsorption particles, the upper pull-out frame is provided with a filter assembly, the filter assembly includes a bottom plate, a three-stage filter screen is provided at the center of the bottom plate, and a secondary mesh cover is provided on the outside of the three-stage filter screen, a first-stage mesh cover is provided on the outside of the second-stage mesh cover, and a cover plate is provided above the first-stage mesh cover and the second-stage mesh cover.

[0009] As a preferred technical solution, the sides of the lower pull-out frame and the upper pull-out frame are slidably connected to side frames, and the side frames are installed on the inner wall of the pretreatment box, and support plates are provided below the side frames.

[0010] As a preferred technical solution, a baffle is provided on the front of the pretreatment box, and the baffle is connected to the pretreatment box by bolt assembly.

[0011] As a preferred technical solution, a sealing ring is provided at the interface between the baffle and the pretreatment box.

[0012] As a preferred technical solution, a frame is installed at the bottom of the pretreatment box.

[0013] As a preferred technical solution, the apertures of the first-stage mesh cover, the second-stage mesh cover and the third-stage filter are arranged in a decreasing shape.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] This utility model is a pretreatment device for industrial wastewater. The filter assembly effectively removes suspended matter and large particles from the wastewater, thereby reducing the burden on subsequent treatment processes and improving overall treatment efficiency. Furthermore, by providing filter screens with different pore sizes, graded filtration can be achieved, further improving filtration accuracy and effectiveness. This utility model has a simple structure and is easy to maintain, reducing maintenance costs and the possibility of secondary contamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of an industrial wastewater pretreatment device;

[0017] Figure 2 This is a schematic diagram of the internal structure of an industrial wastewater pretreatment device;

[0018] Figure 3 This is a schematic diagram of the disassembled structure of an industrial wastewater pretreatment device.

[0019] In the accompanying drawings: 11, pretreatment box; 111, bolt; 12, baffle; 13, frame; 14, inlet pipe; 15, outlet pipe; 21, side frame; 22, support plate; 23, lower pull-out frame; 24, upper pull-out frame; 31, bottom plate; 32, third-stage filter; 34, first-stage mesh cover; 35, second-stage mesh cover; 36, cover plate; 37, adsorbed particles. DETAILED DESCRIPTION

[0020] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions, and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. For those skilled in the art, the present invention can be implemented without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.

[0021] like Figure 1 、 Figure 2 and Figure 3 As shown, the utility model provides a technical solution for a pretreatment device of industrial wastewater: it includes a pretreatment box 11, an inlet pipe 14 is provided at the top of the pretreatment box 11, and an outlet pipe 15 is provided at the bottom. The pretreatment box 11 is provided with a lower pull-out frame 23 and an upper pull-out frame 24 from bottom to top, the lower pull-out frame 23 is filled with adsorption particles 37, and a filter assembly is provided in the upper pull-out frame 24. The filter assembly includes a bottom plate 31, a three-stage filter screen 32 is provided at the center of the bottom plate 31, and a secondary mesh cover 35 is provided on the outside of the three-stage filter screen 32, a first-stage mesh cover 34 is provided on the outside of the second-stage mesh cover 35, and a cover plate 36 is provided above the first-stage mesh cover 34 and the second-stage mesh cover 35.

[0022] The lower and upper drawer frames 23 and 24 are slidably connected to the side frames 21, which are mounted on the inner wall of the pre-treatment box 11. A support plate 22 is provided below the side frames 21. This design makes the maintenance and replacement of the drawer frames more convenient, and the support plate 22 can ensure that the drawer frames remain stable during operation.

[0023] A baffle 12 is provided on the front of the pre-treatment box 11, and the baffle 12 is assembled and connected to the pre-treatment box 11 by bolts 111. The baffle 12 can be opened and closed conveniently, making it easy to inspect and clean the interior of the pre-treatment box 11.

[0024] A sealing ring is provided at the interface between the baffle 12 and the pretreatment box 11 to ensure that when the baffle 12 is closed, the interior of the pretreatment box 11 is completely isolated from the external environment to prevent wastewater leakage.

[0025] A frame 13 is installed at the bottom of the pretreatment box 11. The frame 13 can not only support the entire pretreatment device, but also be conveniently connected to other treatment equipment to achieve continuous treatment of wastewater.

[0026] The apertures of the first-stage mesh 34, the second-stage mesh 35, and the third-stage filter 32 are arranged in a decreasing pattern, thereby achieving graded filtration from coarse to fine. This design can effectively remove suspended matter and large particles of different sizes, improving filtration efficiency and accuracy.

[0027] The industrial wastewater pretreatment device of this utility model not only has a simple structure and is easy to maintain, but also effectively reduces the risk of secondary contamination and improves overall treatment efficiency. Furthermore, the graded filtration design enables the pretreatment device to adapt to industrial wastewater of different types and concentrations, demonstrating excellent versatility and adaptability.

[0028] According to the above scheme, in this embodiment, wastewater flows into the pretreatment box 11 from the inlet pipe 14 and enters the filter assembly in the upper pull-out frame 24. In the filter assembly, the wastewater first passes through the three-stage filter screen 32, which has a larger pore size and can intercept larger suspended matter and particles. Subsequently, the wastewater passes through the secondary mesh cover 35 and the primary mesh cover 34 in turn. The pore sizes of these two mesh covers gradually decrease, which can further intercept smaller suspended matter and particles. The adsorption particles 37 in the lower pull-out frame 23 undergo preliminary adsorption treatment to remove some organic matter and heavy metal ions. The preliminarily cleaned wastewater flows out of the pretreatment box 11 from the outlet pipe 15.

[0029] In practice, the type and quantity of adsorbent particles 37, as well as the apertures of the various filter screens and screens, can be adjusted based on the specific wastewater conditions to achieve optimal pretreatment results. Furthermore, the design of the lower and upper pull-out frames 23 and 24 makes replacement of adsorbent particles and filters quick and easy, significantly reducing maintenance time and costs.

[0030] The working principle and use process of the present invention are as follows: After assembling the various components of the present invention in sequence, all the working steps can be completed by working in accordance with the above implementation methods in sequence according to actual needs.

[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0034] While the embodiments described above are based on the present invention, these embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Clearly, many modifications and variations are possible based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better utilize the present invention and its modifications and uses. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A pretreatment device for industrial wastewater, characterized in that: The invention comprises a pretreatment box (11), wherein the top of the pretreatment box (11) is provided with an inlet pipe (14), and the bottom is provided with an outlet pipe (15); the pretreatment box (11) is provided with a lower pull-out frame (23) and an upper pull-out frame (24) from bottom to top; the lower pull-out frame (23) is filled with adsorption particles (37); the upper pull-out frame (24) is provided with a filter assembly; the filter assembly comprises a bottom plate (31); a three-stage filter screen (32) is provided at the center of the bottom plate (31); a second-stage mesh cover (35) is provided on the outside of the three-stage filter screen (32); a first-stage mesh cover (34) is provided on the outside of the second-stage mesh cover (35); and a cover plate (36) is provided above the first-stage mesh cover (34) and the second-stage mesh cover (35).

2. The industrial wastewater pretreatment device according to claim 1, characterized in that: The sides of the lower pull-out frame (23) and the upper pull-out frame (24) are slidably connected to side frames (21), and the side frames (21) are installed on the inner wall of the pretreatment box (11), and a support plate (22) is provided below the side frames (21).

3. The industrial wastewater pretreatment device according to claim 1, characterized in that: A baffle (12) is provided on the front of the pretreatment box (11), and the baffle (12) and the pretreatment box (11) are assembled and connected via bolts (111).

4. The industrial wastewater pretreatment device according to claim 3, characterized in that: A sealing ring is provided at the interface between the baffle (12) and the pretreatment box (11).

5. The industrial wastewater pretreatment device according to claim 4, characterized in that: A frame (13) is installed at the bottom of the pretreatment box (11).

6. The industrial wastewater pretreatment device according to claim 1, characterized in that: The apertures of the first-stage mesh cover (34), the second-stage mesh cover (35) and the third-stage filter screen (32) are arranged in a decreasing shape.

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