Multi-stage filter screen for industrial wastewater

Abstract

The utility model provides a multistage filter screen for industrial wastewater, which belongs to the technical field of industrial wastewater filtration and comprises a fixing frame, and the fixing frame is provided with a plurality of transverse mounting ports used for fixing a primary filter screen, an intermediate filter screen, an advanced filter screen and an activated carbon filter part; wherein the apertures of the primary filter screen, the intermediate filter screen and the high-grade filter screen are sequentially reduced, and the primary filter screen, the intermediate filter screen and the high-grade filter screen are used for performing multi-stage filtration on industrial wastewater; the activated carbon filter part is arranged on one side, far away from the primary filter screen, of the advanced filter screen, and a neutralization liquid input pipe is fixed in the activated carbon filter part and is used for neutralizing the filtered industrial wastewater; the utility model provides a multistage filter screen for industrial wastewater, which can solve the problems that fine particles and dissolvable harmful substances cannot be effectively removed by the traditional physical filtration, and the acid-base property of the wastewater can influence the subsequent treatment or the environment.

Description

Technical Field

[0001] This utility model belongs to the field of industrial wastewater filtration technology, specifically, it relates to a multi-stage industrial wastewater filter screen. Background Technology

[0002] The background technology of multi-stage industrial wastewater filtration mainly stems from the need for wastewater treatment in industrial production processes. With the acceleration of industrialization, wastewater discharge is increasing year by year. The composition of wastewater is complex, containing harmful substances, suspended solids, dissolved substances, etc. Therefore, how to efficiently and safely treat this wastewater and avoid environmental pollution has become an important issue in current industrial production.

[0003] Industrial wastewater originates from a wide range of industries, including chemical, power, food processing, and metallurgy. The composition of wastewater varies depending on the industry, but it typically contains large amounts of suspended solids, toxic and hazardous substances, oil, and acidic or alkaline substances. Effective wastewater treatment not only protects the environment but also reduces resource waste and improves water reuse rates.

[0004] Traditional physical filtration mainly relies on simple filter screens, which have limited processing capacity and cannot effectively remove fine particles and dissolved harmful substances. Furthermore, the acidity or alkalinity of the wastewater can affect subsequent treatment or the environment. Utility Model Content

[0005] In view of this, the present invention provides a multi-stage filter screen for industrial wastewater, which can solve the problems that traditional physical filtration cannot effectively remove fine particles and dissolved harmful substances, and that the acidity or alkalinity of wastewater can affect subsequent treatment or the environment.

[0006] This utility model is implemented as follows:

[0007] This utility model provides a multi-stage filter screen for industrial wastewater, comprising a fixing frame with multiple horizontal mounting openings for fixing a primary filter screen, a secondary filter screen, a senior filter screen, and an activated carbon filter element. The pore sizes of the primary, secondary, and senior filter screens decrease sequentially to perform multi-stage filtration of industrial wastewater. The activated carbon filter element is located on the side of the senior filter screen away from the primary filter screen, and a neutralization liquid inlet pipe is fixed inside it for neutralizing the filtered industrial wastewater. An inclined groove is located on the side of the fixing frame near the primary filter screen to collect impurities filtered by the primary, secondary, and senior filter screens to prevent clogging.

[0008] Based on the above technical solution, the multi-stage filter screen for industrial wastewater of this utility model can be further improved as follows:

[0009] The neutralizing liquid input pipe includes multiple branches, which are fixed at different positions inside the activated carbon filter element. These branches are used to mix with the neutralizing liquid when the flow rate of the filtered industrial wastewater decreases after passing through the activated carbon filter element for activated carbon adsorption.

[0010] Furthermore, a neutralization tank is provided on the side of the fixing frame near the activated carbon filter element, which stores neutralization liquid for further treatment of industrial wastewater.

[0011] Furthermore, a fixing frame is provided around the primary filter, the intermediate filter, and the advanced filter, and the size of the fixing frame matches the size of the lateral mounting opening of the fixing bracket.

[0012] Furthermore, a slide rail is provided on the inner side wall of the horizontal mounting opening of the fixing frame, and a slider that matches the slide rail is provided on the outer side wall of the mounting frame of the primary filter, the intermediate filter, and the advanced filter.

[0013] Furthermore, the cross-section of the slider is an I-shaped structure.

[0014] Furthermore, the inclination angle of the inclined groove is 15-30°, and from the perspective of the vertical cross-section, the height of the side of the inclined groove closer to the fixed frame is higher than the height of the side farther away from the fixed frame.

[0015] Furthermore, the primary filter screen is a stainless steel woven mesh with a pore size of 1-5mm.

[0016] Furthermore, the intermediate filter screen is sintered ceramic with a pore size of 0.1-1mm.

[0017] Furthermore, the advanced filter is a polytetrafluoroethylene microporous membrane with a pore size of 0.01-0.1 mm.

[0018] Compared with existing technologies, the beneficial effects of the multi-stage industrial wastewater filter provided by this utility model are:

[0019] The mounting bracket is the supporting structure for the entire filtration system, providing support and ensuring the filter components are securely installed. The bracket has multiple horizontal mounting ports for securing different levels of filter screens and activated carbon filter elements. This horizontal mounting design ensures precise positioning of each filter component and facilitates maintenance and replacement. It also helps maintain system stability, preventing any shifting or instability during filtration.

[0020] Primary filters are mainly used to remove large particulate impurities from industrial wastewater. Primary filters with larger pore sizes can block larger solid particles, protecting subsequent intermediate and advanced filters from clogging by large particles, thereby improving the overall efficiency and lifespan of the system.

[0021] Intermediate filters further filter smaller particulate matter in wastewater, providing additional purification. They are typically made of sintered ceramic material with a pore size of 0.1-1mm, effectively removing medium-sized solid particles from wastewater. Their filtration capacity falls between that of primary and advanced filters, reducing the workload on subsequent filter stages.

[0022] Advanced filter screens are used to remove fine particles from wastewater, providing fine filtration. Using polytetrafluoroethylene (PTFE) microporous membranes, with pore sizes typically ranging from 0.01 to 0.1 mm, they can filter out tiny particles in wastewater, ensuring that the wastewater reaches a high standard of cleanliness. This is particularly important for treating water requiring high precision.

[0023] Activated carbon filters are used to adsorb harmful substances in wastewater, such as organic pollutants and toxic substances. Activated carbon effectively adsorbs organic pollutants in water, improving water quality. Located at the far end of a high-efficiency filter, the activated carbon filter ensures further purification of wastewater after fine filtration. Activated carbon granules can also be added to the activated carbon filter to enhance adsorption efficiency.

[0024] The neutralization solution inlet pipe introduces the neutralization solution into the activated carbon filter to help adjust the chemical properties of the wastewater. Multiple branch pipes ensure that the neutralization solution is evenly mixed with the wastewater adsorbed by the activated carbon, thereby neutralizing the acidic and alkaline components in the wastewater and further improving water quality.

[0025] The inclined trough is located on the fixed frame near the primary filter screen and is used to collect impurities generated during the filtration process. It effectively prevents the accumulation and clogging of impurities, ensuring smooth wastewater flow and avoiding filtration efficiency issues caused by filter screen blockage.

[0026] The neutralization tank stores the neutralizing solution for further treatment of the neutralized wastewater. Even after activated carbon filtration, some acid-base imbalanced components may still remain in the wastewater. The neutralization tank provides additional treatment to further stabilize the wastewater's chemical properties.

[0027] The mounting frame ensures a proper fit between the filter screen and the mounting bracket, and allows for easy installation and removal of the filter screen via the slide rails. The dimensions of the mounting frame match the mounting opening, ensuring a secure installation. The design of the slide rails and sliders provides convenient installation and removal, improving system maintenance efficiency.

[0028] This multi-stage filter design gradually cleans and purifies industrial wastewater through different filtration levels and neutralization treatment. At the same time, the combination of inclined troughs and neutralization tanks ensures that the system will not clog during operation and can further improve the chemical properties of the wastewater, ensuring that the water quality meets environmental protection standards. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of a multi-stage filter screen for industrial wastewater.

[0031] Figure 2 This is a structural diagram of a fixed frame;

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 10. Fixture; 20. Inclined groove; 30. Primary filter screen; 40. Intermediate filter screen; 50. Advanced filter screen; 60. Activated carbon filter element. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0035] like Figure 1-2 The image shows an embodiment of a multi-stage industrial wastewater filter provided by this utility model. In this embodiment, a mounting frame 10 is included, which has multiple horizontal mounting openings for fixing a primary filter screen 30, a secondary filter screen 40, a high-grade filter screen 50, and an activated carbon filter element 60. The pore sizes of the primary filter screen 30, secondary filter screen 40, and high-grade filter screen 50 decrease sequentially, enabling multi-stage filtration of industrial wastewater. The activated carbon filter element 60 is located on the side of the high-grade filter screen 50 away from the primary filter screen 30, and a neutralization liquid inlet pipe is fixed inside it for neutralizing the filtered industrial wastewater. An inclined groove 20 is located on the side of the mounting frame 10 near the primary filter screen 30, used to concentrate impurities filtered by the primary filter screen 30, secondary filter screen 40, and high-grade filter screen 50 to prevent clogging.

[0036] In the above technical solution, the neutralizing liquid inlet pipe includes multiple branches, which are fixed at different positions inside the activated carbon filter element 60, and are used to mix with the neutralizing liquid when the flow rate of the filtered industrial wastewater decreases after passing through the activated carbon filter element 60 for activated carbon adsorption.

[0037] Furthermore, in the above technical solution, a neutralization tank is provided on the side of the fixing frame 10 near the activated carbon filter element 60, which stores neutralization liquid for further treatment of industrial wastewater.

[0038] Furthermore, in the above technical solution, a fixing frame is provided around the primary filter screen 30, the intermediate filter screen 40 and the advanced filter screen 50, and the size of the fixing frame matches the size of the horizontal mounting opening of the fixing bracket 10.

[0039] Furthermore, in the above technical solution, a slide rail is provided on the inner side wall of the horizontal mounting port of the fixing frame 10, and a slider that matches the slide rail is provided on the outer side wall of the mounting frame of the primary filter screen 30, the intermediate filter screen 40 and the advanced filter screen 50.

[0040] Furthermore, in the above technical solution, the cross-section of the slider is an I-shaped structure.

[0041] Furthermore, in the above technical solution, the inclination angle of the inclined groove 20 is 15-30°. From the perspective of the vertical cross section, the height of the side of the inclined groove 20 closer to the fixed frame 10 is higher than the height of the side farther away from the fixed frame 10.

[0042] Furthermore, in the above technical solution, the primary filter screen 30 is a stainless steel woven mesh with a pore size of 1-5mm.

[0043] Furthermore, in the above technical solution, the intermediate filter screen 40 is sintered ceramic with a pore size of 0.1-1mm.

[0044] Furthermore, in the above technical solution, the advanced filter 50 is a polytetrafluoroethylene microporous membrane with a pore size of 0.01-0.1 mm.

[0045] Specifically, the principle of this utility model is as follows: During use, install the mounting bracket in a suitable position, ensuring it is stable and level. Install the various filter screens on the mounting bracket in sequence. First install the primary filter screen, then the intermediate filter screen, then the advanced filter screen, and finally the activated carbon filter element. Ensure that each filter component is correctly connected to its corresponding mounting port to avoid leakage or misalignment. Connect the neutralization liquid inlet pipe to the appropriate interface of the activated carbon filter element. Ensure the pipe connection is tight and leak-free, and that the neutralization liquid is evenly distributed throughout the filtration system. Add an appropriate amount of neutralization liquid to the neutralization tank, adjusting according to the pH of the wastewater. The design of the inclined trough should ensure effective collection of impurities discharged from each filter screen, preventing clogging. Start the system and check if the wastewater has passed through each filtration stage, ensuring smooth flow. After startup, closely monitor the operation of the filter screens, regularly checking the wastewater quality and filtration effect. Depending on the wastewater treatment volume and pollution level, regularly inspect, clean, or replace the filter screens. Adjust the neutralization liquid input and other system parameters in a timely manner according to changes in water quality to ensure the wastewater is always in optimal treatment condition.

Claims

1. A multi-stage filter screen for industrial wastewater, characterized in that, The system includes a mounting bracket (10) with multiple horizontal mounting openings for fixing a primary filter (30), a secondary filter (40), a high-grade filter (50), and an activated carbon filter element (60). The pore sizes of the primary filter (30), the secondary filter (40), and the high-grade filter (50) decrease sequentially to perform multi-stage filtration of industrial wastewater. The activated carbon filter element (60) is located on the side of the high-grade filter (50) away from the primary filter (30), and a neutralization liquid inlet pipe is fixed inside it for neutralizing the filtered industrial wastewater. An inclined groove (20) is located on the side of the mounting bracket (10) close to the primary filter (30) to concentrate the impurities filtered by the primary filter (30), the secondary filter (40), and the high-grade filter (50) to prevent clogging.

2. The multi-stage filter screen for industrial wastewater according to claim 1, characterized in that, The neutralizing liquid inlet pipe includes multiple branches, which are fixed at different positions inside the activated carbon filter element (60) to mix with the neutralizing liquid when the flow rate of the filtered industrial wastewater decreases after passing through the activated carbon filter element (60) for activated carbon adsorption.

3. The multi-stage filter screen for industrial wastewater according to claim 2, characterized in that, The mounting frame (10) is provided with a neutralization tank on the side near the activated carbon filter element (60), which stores neutralization liquid for further treatment of industrial wastewater.

4. The multi-stage filter screen for industrial wastewater according to claim 3, characterized in that, The primary filter (30), the intermediate filter (40) and the advanced filter (50) are surrounded by a fixing frame, the size of which matches the size of the lateral mounting opening of the fixing frame (10).

5. The multi-stage filter screen for industrial wastewater of claim 4, wherein, The inner wall of the horizontal mounting opening of the fixing frame (10) is provided with a slide rail, and the outer wall of the mounting frame of the primary filter (30), the intermediate filter (40) and the advanced filter (50) is provided with a slider that matches the slide rail.

6. The multi-stage filter screen for industrial wastewater of claim 5, wherein, The slider has an I-shaped cross-section.

7. The multi-stage filter screen for industrial wastewater according to claim 6, characterized in that, The inclined angle of the inclined groove (20) is 15-30°. From the vertical cross-section, the height of the side of the inclined groove (20) closer to the fixed frame (10) is higher than the height of the side farther away from the fixed frame (10).

8. The multi-stage filter screen for industrial wastewater according to claim 7, characterized in that, The primary filter screen (30) is a stainless steel woven mesh with a pore size of 1-5mm.

9. A multi-stage filter screen for industrial wastewater according to claim 8, characterized in that, The intermediate filter screen (40) is sintered ceramic with a pore size of 0.1-1mm.

10. A multi-stage filter screen for industrial wastewater according to claim 9, characterized in that, The advanced filter (50) is a polytetrafluoroethylene microporous membrane with a pore size of 0.01-0.1 mm.

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