Industrial sewage treatment device

Abstract

The utility model relates to an industrial sewage treatment device, which comprises a mixing part, a lower-layer precipitation separation part, a middle-layer suspended solid separation part, an upper-layer anti-overflow part, a clear water storage part and a controller, the mixing part comprises a mixing pool, a reagent feeding part and a mixing and stirring part, and the reagent feeding part is arranged on the mixing pool; the mixing and stirring part is arranged in the mixing tank and is used for stirring the industrial wastewater mixed solution in the mixing tank to avoid the precipitation of the industrial wastewater mixed solution, and meanwhile, in the operation process of the mixing and stirring part, substances in the industrial wastewater are separated to form the industrial wastewater with the gradually-decreased concentration; the lower-layer precipitation separation part is connected to the bottom of the mixing tank; the middle-layer suspended solid separation part is connected to the middle of the mixing tank; the upper-layer anti-overflow component is connected to the top of the mixing tank; the clear water storage part is arranged on one side of the mixing tank. The technical scheme provided by the utility model has the beneficial technical effects that the recovery purity of heavy metals in industrial sewage is effectively improved, and the use efficiency of subsequent heavy metal precipitates is improved.

Description

Technical Field

[0001] The utility model relates to the field of industrial sewage treatment, in particular to an industrial sewage treatment device. Background Art

[0002] Industrial wastewater treatment refers to the process of treating industrial wastewater to meet the purification requirements of a specific water body or to meet the requirements for reuse. Improper treatment and direct discharge of this wastewater can cause significant pollution to the human environment. With the rapid development of industrialization and urbanization, wastewater discharge has increased significantly, leading to the urgent need for attention to this issue. The serious impact of industrial wastewater discharge on the ecological environment and human health has forced wastewater treatment technology to become a key area of scientific and technological innovation.

[0003] Existing wastewater treatment methods primarily rely on physical and chemical treatments, specifically, settling pollutants in industrial wastewater before discharging it for disposal. However, the precipitated substances in industrial wastewater contain inorganic suspended solids and heavy metals. Existing technologies treat these substances uniformly through precipitation, without any specific treatment. This results in the generation of large amounts of wastewater containing dissolved precipitates during subsequent treatment, causing secondary pollution to the environment. Furthermore, the precipitation of heavy metals and inorganic suspended solids occupies a significant amount of land, hindering land use cost savings.

[0004] Therefore, it is very necessary to provide an industrial sewage treatment device to solve the above technical problems. Utility Model Content

[0005] Based on the above, the present invention provides an industrial wastewater treatment device to address the existing problem of centralized sedimentation treatment without subdividing the wastewater into smaller parts. This results in the generation of large amounts of wastewater containing dissolved sediment during subsequent treatment, causing secondary pollution to the environment. Furthermore, the sedimentation of heavy metals and inorganic suspended solids occupies a significant amount of land, hindering land use cost savings.

[0006] The technical solution of the utility model for solving the above technical problems is as follows: an industrial sewage treatment device, comprising a mixing component, a lower sedimentation separation component, a middle suspended solid separation component, an upper anti-overflow component, a clean water storage component and a controller, the mixing component comprising a mixing tank, a reagent feeding component and a mixing stirring component, the reagent feeding component is arranged on the mixing tank, and is used to feed heavy metal precipitation reagent into the mixing tank; the mixing stirring component is arranged in the mixing tank, and is used to stir the industrial wastewater mixture in the mixing tank to prevent the industrial wastewater mixture from settling, and at the same time, during the operation of the mixing stirring component, the substances in the industrial wastewater are separated, that is, industrial sewage with decreasing concentration is formed; the lower layer The sedimentation separation component is connected to the bottom of the mixing tank, and is used to extract the industrial sewage from the bottom of the mixing tank; the middle-layer suspended solid separation component is connected to the middle of the mixing tank, and is used to extract the industrial sewage from the middle of the mixing tank; the upper-layer anti-overflow component is connected to the top of the mixing tank, and is used to store the industrial sewage at the top of the mixing tank; the clean water storage component is provided on one side of the mixing tank, and is used to collect the clean water in the lower-layer sedimentation separation component and the middle-layer suspended solid separation component to provide clean water for the mixing tank; the controller is electrically connected to the reagent delivery component, the mixing and stirring component, the lower-layer sedimentation separation component, the middle-layer suspended solid separation component, the upper-layer anti-overflow component and the clean water storage component.

[0007] Furthermore, the lower layer sedimentation and separation component includes a lower layer separation port, a first electrically controlled valve, a first connecting pipe and a first sedimentation tank, the lower layer separation port is arranged at the bottom of the mixing tank; the first electrically controlled valve is arranged on the lower layer separation port, and the first electrically controlled valve is electrically connected to the controller; the first connecting pipe is connected to the lower layer separation port; the first sedimentation tank is connected to the first connecting pipe.

[0008] Furthermore, the lower layer sedimentation and separation component also includes a first water level sensor, a first telescopic member, a first spectrometer and a first extraction pump. The first water level sensor is arranged in the first sedimentation tank and is electrically connected to the controller by signal; the first telescopic member is provided with a fixed end and a telescopic end. The fixed end of the first telescopic member is fixed on the first sedimentation tank, and the telescopic end of the first telescopic member is arranged in the first sedimentation tank, and is used to move the telescopic end of the first telescopic member following the water level of the first sedimentation tank within a preset range; the first spectrometer is fixed on the telescopic end of the first telescopic member and is electrically connected to the controller by signal, and is used to detect the water quality of the water level position detected by the first water level sensor; the first extraction pump body is fixed above the first sedimentation tank, the water inlet end of the first extraction pump is fixed on the first telescopic member, and the water outlet end of the first extraction pump is connected to the clean water storage component.

[0009] Furthermore, the middle-layer suspended solid separation component includes a middle-layer separation port, a second electrically controlled valve, a second connecting pipe and a second sedimentation tank, wherein the middle-layer separation port is arranged in the middle of the mixing tank; the second electrically controlled valve is arranged on the middle-layer separation port, and the second electrically controlled valve is electrically connected to the controller; the second connecting pipe is connected to the middle-layer separation port; and the second sedimentation tank is connected to the second connecting pipe.

[0010] Furthermore, the middle-layer suspended solid separation component also includes a second water level sensor, a second telescopic member, a second spectrometer and a second extraction pump. The second water level sensor is arranged in the second sedimentation tank and is electrically connected to the controller by signal. The second telescopic member is provided with a fixed end and a telescopic end. The fixed end of the second telescopic member is fixed on the second sedimentation tank, and the telescopic end of the second telescopic member is arranged in the second sedimentation tank, and is used to move the telescopic end of the second telescopic member following the water level of the second sedimentation tank within a preset range. The second spectrometer is fixed on the telescopic end of the second telescopic member and is electrically connected to the controller by signal, and is used to detect suspended solids at the water level position detected by the second water level sensor. The second extraction pump body is fixed above the second sedimentation tank, the water inlet end of the second extraction pump is fixed on the second telescopic member, and the water outlet end of the second extraction pump is connected to the clean water storage component.

[0011] Furthermore, the upper anti-overflow component includes an upper anti-overflow port, a third connecting pipe and an anti-overflow water tank. The upper anti-overflow port is arranged at the top of the mixing tank; the third connecting pipe is connected to the upper anti-overflow port; and the anti-overflow water tank is connected to the third connecting pipe.

[0012] Furthermore, the upper overflow prevention component also includes a third water level sensor, an alarm and a third extraction pump. The third water level sensor is arranged in the overflow prevention water reservoir and is electrically connected to the controller; the alarm is electrically connected to the controller and is used to alarm when the third water level sensor detects that the water level in the overflow prevention water reservoir exceeds a preset threshold; the third extraction pump body is fixed on the overflow prevention water reservoir, the water inlet end of the third extraction pump is arranged in the overflow prevention water reservoir, and the water outlet end of the third extraction pump is arranged in the mixing tank.

[0013] Furthermore, the reagent delivery component includes a reagent box and a reagent delivery valve, the reagent box is arranged on the mixing tank; the reagent delivery valve is arranged at the bottom of the reagent box, and the reagent delivery valve is electrically connected to the controller.

[0014] Furthermore, the clean water storage component includes a clean water storage tank, a fourth water level sensor and a fourth extraction pump, the clean water storage tank is used to provide clean water to the mixing tank; the fourth water level sensor is arranged in the clean water storage tank and is electrically connected to the controller signal; the fourth extraction pump body is fixed on the clean water storage tank, the water inlet end of the fourth extraction pump is arranged in the clean water storage tank, and the water outlet end of the fourth extraction pump is arranged in the mixing tank.

[0015] Furthermore, it also includes a mixing tank water level sensor, which is arranged in the mixing tank and electrically connected to the controller, and is used to sense the water level in the mixing tank so that the controller can coordinate and control the operation of the mixing and stirring elements, the lower layer sedimentation separation elements, the middle layer suspended solids separation elements and the clean water storage elements.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0017] The industrial wastewater mixture in the mixing tank is stirred by a mixing and stirring element to prevent the industrial wastewater mixture from settling. At the same time, during the operation of the mixing and stirring element, the substances in the industrial wastewater are separated, forming industrial wastewater with decreasing concentration. The lower-layer sedimentation separation component is used to preliminarily recover the metal precipitates with higher concentrations. The middle-layer suspended solid separation component is used to preliminarily recover the inorganic solid suspended matter. This effectively improves the recovery purity of heavy metals in industrial wastewater, improves the efficiency of subsequent use of heavy metal precipitates, and helps save land use costs. This solves the problem that the existing technology uniformly performs precipitation treatment without subdividing it, resulting in the generation of a large amount of wastewater containing dissolved precipitates during later treatment, causing secondary pollution to the environment. In addition, heavy metals and inorganic solid suspended matter will occupy a large amount of land area after precipitation, which is not conducive to saving land use costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the overall structure of an industrial wastewater treatment device provided by an embodiment of the utility model;

[0019] Figure 2 A top view of an industrial wastewater treatment device provided by an embodiment of the utility model;

[0020] Figure 3 for Figure 2 Schematic diagram of the cross section at AA in the middle;

[0021] Figure 4 for Figure 2 Schematic diagram of the cross section at BB in the middle.

[0022] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0023] 1. Mixing components; 11. Mixing tank; 12. Reagent delivery component; 121. Reagent reagent; 122. Reagent delivery valve; 13. Mixing and stirring components; 14. Mixing tank water level sensor;

[0024] 2. Lower layer sedimentation separation component; 21. Lower layer separation port; 22. First electrically controlled valve; 23. First connecting pipe; 24. First sedimentation tank; 25. First water level sensor; 26. First telescopic member; 27. First spectrometer; 28. First extraction pump;

[0025] 3. Middle-layer suspended solids separation component; 31. Middle-layer separation port; 32. Second electrically controlled valve; 33. Second connecting pipe; 34. Second sedimentation tank; 35. Second water level sensor; 36. Second telescopic member; 37. Second spectrometer; 38. Second extraction pump;

[0026] 4. Upper overflow prevention component; 41. Upper overflow prevention port; 42. Third connecting pipe; 43. Overflow prevention reservoir; 44. Third water level sensor; 45. Alarm; 46. Third extraction pump;

[0027] 5. Clean water storage element; 51. Clean water storage tank; 52. Fourth water level sensor; 53. Fourth extraction pump;

[0028] 6. Controller. DETAILED DESCRIPTION

[0029] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0031] It will be understood that spatial relational terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be understood that in addition to the orientations shown in the figures, spatial relational terms also include different orientations of the device in use and operation. For example, if the device in the drawings is turned over, the element or feature described as "under" or "beneath" or "beneath" the other elements will be oriented as "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include alternative orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0032] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediate element. In the following embodiments, "connection" should be understood as "electrical connection", "communication connection", etc., if the connected circuits, modules, units, etc. can transmit electrical signals or data to each other.

[0033] When used herein, the singular forms "a", "an", and "the" may also include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

[0034] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, an industrial wastewater treatment device includes a mixing component 1, a lower sedimentation separation component 2, a middle suspended solid separation component 3, an upper anti-overflow component 4, a clean water storage component 5 and a controller 6, wherein the mixing component 1 includes a mixing tank 11, a reagent feeding component 12 and a mixing and stirring component 13, wherein the reagent feeding component 12 is arranged on the mixing tank 11 and is used to feed a heavy metal precipitation reagent into the mixing tank 11; the mixing and stirring component 13 is arranged in the mixing tank 11 and is used to stir the industrial wastewater mixture in the mixing tank 11 to prevent the industrial wastewater mixture from precipitating. At the same time, during the operation of the mixing and stirring component 13, the substances in the industrial wastewater are separated, i.e., industrial wastewater with decreasing concentration is formed; the lower sedimentation separation component 2 is connected to the mixing tank 11; The bottom of the mixing tank 11 is used to extract the industrial sewage at the bottom of the mixing tank 11; the middle-layer suspended solid separation component 3 is connected to the middle of the mixing tank 11, and is used to extract the industrial sewage in the middle of the mixing tank 11; the upper-layer anti-overflow component 4 is connected to the top of the mixing tank 11, and is used to store the industrial sewage at the top of the mixing tank 11; the clean water storage component 5 is provided on one side of the mixing tank 11, and is used to collect the clean water in the lower-layer sedimentation separation component 2 and the middle-layer suspended solid separation component 3 to provide clean water for the mixing tank 11; the controller 6 is electrically connected to the reagent delivery component 12, the mixing and stirring component 13, the lower-layer sedimentation separation component 2, the middle-layer suspended solid separation component 3, the upper-layer anti-overflow component 4 and the clean water storage component 5.

[0035] In this embodiment, the prior art CN109179740A proposes a method for centrifuging heavy metal wastewater. The heavy metal wastewater is first flocculated and precipitated and preliminarily filtered. The clear liquid is then subjected to ion exchange and multi-layer adsorption to reduce the metal ion content in the water, thereby purifying the heavy metal wastewater. However, industrial wastewater also contains inorganic solid suspensions. If these are not separated, a large amount of impurities will be generated during the subsequent treatment to dissolve the metal precipitates. In order to clean up the impurities in the metal precipitates, a large amount of industrial wastewater needs to be generated. Moreover, after precipitation, the heavy metals and inorganic solid suspensions will occupy a large amount of land area, and the sediment in the sedimentation tank is collected in a storage area. The recovery cycle is too long and the utilization efficiency is extremely low, which is not conducive to saving recycling costs and land use costs for the company.

[0036] Therefore, the present application utilizes a mixing and stirring element 13 to stir the industrial wastewater mixture in the mixing tank 11 to prevent the industrial wastewater mixture from settling. At the same time, during the operation of the mixing and stirring element 13, the substances in the industrial wastewater are separated, i.e., industrial wastewater with decreasing concentration is formed. The lower sedimentation separation component 2 is utilized to preliminarily recover the metal precipitates with higher concentrations. The middle suspended solid separation component 3 is utilized to preliminarily recover the inorganic solid suspended matter. This effectively improves the recovery purity of heavy metals in industrial wastewater, improves the efficiency of subsequent use of heavy metal precipitates, and helps save land use costs.

[0037] In addition, the controller 6 of the present application adopts a PLC programmable controller, model S7-300, and is provided with a touch operation interface. Various control parameters can be conveniently set through the touch screen operation interface.

[0038] In some embodiments, the lower layer sedimentation separation component 2 includes a lower layer separation port 21, a first electrically controlled valve 22, a first connecting pipe 23 and a first sedimentation tank 24, the lower layer separation port 21 is arranged at the bottom of the mixing tank 11; the first electrically controlled valve 22 is arranged on the lower layer separation port 21, and the first electrically controlled valve 22 is electrically connected to the controller 6; the first connecting pipe 23 is connected to the lower layer separation port 21; the first sedimentation tank 24 is connected to the first connecting pipe 23.

[0039] In this embodiment, the first electrically controlled valve 22 is a 600X hydraulic electrically controlled valve.

[0040] In some embodiments, the lower layer sedimentation and separation component 2 also includes a first water level sensor 25, a first telescopic member 26, a first spectrometer 27 and a first extraction pump 28. The first water level sensor 25 is arranged in the first sedimentation tank 24 and is electrically connected to the controller 6; the first telescopic member 26 is provided with a fixed end and a telescopic end. The fixed end of the first telescopic member 26 is fixed on the first sedimentation tank 24, and the telescopic end of the first telescopic member 26 is arranged in the first sedimentation tank 24, and is used to move the telescopic end of the first telescopic member 26 following the water level of the first sedimentation tank 24 within a preset range; the first spectrometer 27 is fixed on the telescopic end of the first telescopic member 26 and is electrically connected to the controller 6 for detecting the water quality of the water level position detected by the first water level sensor 25; the first extraction pump 28 body is fixed above the first sedimentation tank 24, the water inlet end of the first extraction pump 28 is fixed on the first telescopic member 26, and the water outlet end of the first extraction pump 28 is connected to the clean water storage component 5.

[0041] In this embodiment, a first water level sensor 25 is used to sense the specific location of industrial wastewater in the first sedimentation tank 24. A first telescopic member 26 is used to move a first spectrometer 27 to the location of the industrial wastewater. When the first spectrometer 26 detects that the impurities in the water are within a preset range, meaning that the water is relatively clear, a first extraction pump 28 extracts clean water from above. This pumps the clean water from the first sedimentation tank 24 into the clean water storage unit 5 for subsequent recycling.

[0042] Secondly, the model of the spectrometer used in this application is AQ6370D. It should be noted that this application can also use AQ6373B or AQ6374 and other models of spectrometers as instruments for measuring the uniformity of the mixing of coating raw materials.

[0043] In some embodiments, the middle-layer suspended solid separation component 3 includes a middle-layer separation port 31, a second electrically controlled valve 32, a second connecting pipe 33 and a second sedimentation tank 34, wherein the middle-layer separation port 31 is located in the middle of the mixing tank 11; the second electrically controlled valve 32 is located on the middle-layer separation port 31, and the second electrically controlled valve 32 is electrically connected to the controller 6; the second connecting pipe 33 is connected to the middle-layer separation port 31; and the second sedimentation tank 34 is connected to the second connecting pipe 33.

[0044] In this embodiment, the second electrically controlled valve 32 is a 600X hydraulic electrically controlled valve.

[0045] In some embodiments, the middle-layer suspended solid separation component 3 also includes a second water level sensor 35, a second telescopic member 36, a second spectrometer 37 and a second extraction pump 38. The second water level sensor 35 is arranged in the second sedimentation tank 34 and is electrically connected to the controller 6; the second telescopic member 36 is provided with a fixed end and a telescopic end. The fixed end of the second telescopic member 36 is fixed on the second sedimentation tank 34, and the telescopic end of the second telescopic member 36 is arranged in the second sedimentation tank 34, and is used to move the telescopic end of the second telescopic member 36 following the water level of the second sedimentation tank 34 within a preset range; the second spectrometer 37 is fixed on the telescopic end of the second telescopic member 36 and is electrically connected to the controller 6 for detecting suspended solids at the water level position detected by the second water level sensor 35; the second extraction pump 38 body is fixed above the second sedimentation tank 34, the water inlet end of the second extraction pump 38 is fixed on the second telescopic member 36, and the water outlet end of the second extraction pump 38 is connected to the clean water storage component 5.

[0046] In this embodiment, because the inorganic solid suspended matter in industrial wastewater is relatively high, before separating the heavy metal precipitates, a second water level sensor 35 is used to sense the specific water level in the second sedimentation tank 34. A second telescopic member 36 is then used to move the second spectrometer 37 to the position of the inorganic solid suspended matter. When the second spectrometer 37 detects that the impurities in the water are within a preset range, i.e., the water is relatively clear, a second extraction pump 38 transfers the clean water from the second sedimentation tank 34 to the clean water storage unit 5 for subsequent recycling.

[0047] Secondly, the spectrometer model of this application is AQ6370D. It should be noted that this application can also use AQ6373B or AQ6374 and other models of spectrometers as instruments for measuring the uniformity of the mixing of coating raw materials. In addition, the second water level sensor 35 is a WL430 wastewater level sensor.

[0048] In some embodiments, the upper overflow prevention component 4 includes an upper overflow prevention port 41, a third connecting pipe 42 and an overflow prevention water tank 43. The upper overflow prevention port 41 is arranged at the top of the mixing tank 11; the third connecting pipe 42 is connected to the upper overflow prevention port 41; and the overflow prevention water tank 43 is connected to the third connecting pipe 42.

[0049] In some embodiments, the upper overflow prevention component 4 also includes a third water level sensor 44, an alarm 45 and a third extraction pump 46. The third water level sensor 44 is arranged in the overflow prevention water reservoir 43 and is electrically connected to the controller 6; the alarm 45 is electrically connected to the controller 6 and is used to alarm when the third water level sensor 44 detects that the water level in the overflow prevention water reservoir 43 exceeds a preset threshold; the third extraction pump 46 body is fixed on the overflow prevention water reservoir 43, the water inlet end of the third extraction pump 46 is arranged in the overflow prevention water reservoir 43, and the water outlet end of the third extraction pump 46 is arranged in the mixing tank 11.

[0050] In this embodiment, industrial wastewater within mixing tank 11 could overflow, potentially causing irreversible damage to the site. Therefore, an upper overflow prevention port 41 is provided at the top of mixing tank 11, allowing any impending overflow of industrial wastewater to be directed into overflow prevention reservoir 43 via a third connecting pipe 42. Furthermore, a third water level sensor 44 is a WL430 wastewater level sensor.

[0051] In some embodiments, the reagent delivery component 12 includes a reagent reagent box 121 and a reagent delivery valve 122 . The reagent reagent box 121 is disposed on the mixing tank 11 . The reagent delivery valve 122 is disposed at the bottom of the reagent reagent box 121 , and the reagent delivery valve 122 is electrically connected to the controller 6 .

[0052] In some embodiments, the clean water storage component 5 includes a clean water storage tank 51, a fourth water level sensor 52 and a fourth extraction pump 53. The clean water storage tank 51 is used to provide clean water to the mixing tank 11; the fourth water level sensor 52 is arranged in the clean water storage tank 51 and is electrically connected to the controller 6; the fourth extraction pump 53 body is fixed on the clean water storage tank 51, the water inlet end of the fourth extraction pump 53 is arranged in the clean water storage tank 51, and the water outlet end of the fourth extraction pump 53 is arranged in the mixing tank 11.

[0053] In this embodiment, the fourth water level sensor 52 is a WL430 wastewater level sensor.

[0054] In some embodiments, a mixing tank water level sensor 14 is also included, which is arranged in the mixing tank 11 and electrically connected to the controller 6, and is used to sense the water level in the mixing tank 11, so that the controller 6 can coordinate and control the operation of the mixing and stirring element 13, the lower layer sedimentation separation element 2, the middle layer suspended solid separation element 3 and the clean water storage element 5.

[0055] In this embodiment, when the mixing tank water level sensor 14 senses that the water level in the mixing tank 11 is at a low level, the controller 6 controls the fourth extraction pump 54 to pump the clean water in the clean water storage tank 51 into the mixing tank 11 .

[0056] Among them, the mixing tank water level sensor 14 model is WL430 wastewater level sensor.

[0057] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0058] The industrial wastewater mixture in the mixing tank is stirred by a mixing and stirring element to prevent the industrial wastewater mixture from settling. At the same time, during the operation of the mixing and stirring element, the substances in the industrial wastewater are separated, forming industrial wastewater with decreasing concentration. The lower-layer sedimentation separation component is used to preliminarily recover the metal precipitates with higher concentrations. The middle-layer suspended solid separation component is used to preliminarily recover the inorganic solid suspended matter. This effectively improves the recovery purity of heavy metals in industrial wastewater, improves the efficiency of subsequent use of heavy metal precipitates, and helps save land use costs. This solves the problem that the existing technology uniformly performs precipitation treatment without subdividing it, resulting in the generation of a large amount of wastewater containing dissolved precipitates during later treatment, causing secondary pollution to the environment. In addition, heavy metals and inorganic solid suspended matter will occupy a large amount of land area after precipitation, which is not conducive to saving land use costs.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An industrial wastewater treatment device, characterized in that: include: A mixing element (1) comprising: Mixing tank (11); a reagent delivery member (12), which is provided on the mixing tank (11) and is used to deliver a heavy metal precipitation reagent into the mixing tank (11); A mixing and stirring element (13) is provided in the mixing tank (11) and is used to stir the industrial wastewater mixture in the mixing tank (11) to prevent the industrial wastewater mixture from settling. At the same time, during the operation of the mixing and stirring element (13), substances in the industrial wastewater are separated, i.e., industrial wastewater with decreasing concentration is formed; A lower sedimentation separation component (2) is connected to the bottom of the mixing tank (11) and is used to extract the industrial sewage from the bottom of the mixing tank (11); a middle-layer suspended solid separation component (3), which is connected to the middle of the mixing tank (11) and is used to extract the industrial sewage in the middle of the mixing tank (11); an upper overflow prevention component (4), which is connected to the top of the mixing tank (11) and is used to store industrial sewage at the top of the mixing tank (11); a clean water storage element (5) disposed on one side of the mixing tank (11) and used to collect clean water from the lower sedimentation separation element (2) and the middle suspended solid separation element (3) to provide clean water for the mixing tank (11); The controller (6) is electrically connected to the reagent feeding component (12), the mixing and stirring component (13), the lower layer sedimentation separation component (2), the middle layer suspended solid separation component (3), the upper layer anti-overflow component (4) and the clean water storage component (5).

2. An industrial wastewater treatment device according to claim 1, characterized in that: The lower layer sedimentation separation component (2) comprises: a lower layer separation port (21) provided at the bottom of the mixing tank (11); a first electrically controlled valve (22), which is provided on the lower separation port (21), and the first electrically controlled valve (22) is electrically connected to the controller (6); a first connecting pipe (23) connected to the lower separation port (21); A first sedimentation tank (24) is connected to the first connecting pipe (23).

3. An industrial wastewater treatment device according to claim 2, characterized in that: The lower layer sedimentation separation component (2) further comprises: a first water level sensor (25), which is disposed in the first sedimentation tank (24) and is electrically connected to the controller (6); a first telescopic member (26) having a fixed end and a telescopic end, wherein the fixed end of the first telescopic member (26) is fixed to the first sedimentation tank (24), and the telescopic end of the first telescopic member (26) is disposed in the first sedimentation tank (24), and is used to move the telescopic end of the first telescopic member (26) within a preset range to follow the water level of the first sedimentation tank (24); a first spectrometer (27), which is fixed to the telescopic end of the first telescopic member (26) and is electrically connected to the controller (6) for detecting the water quality at the water level detected by the first water level sensor (25); A first extraction pump (28) has its main body fixed above the first sedimentation tank (24), a water inlet end of the first extraction pump (28) is fixed on the first telescopic member (26), and a water outlet end of the first extraction pump (28) is connected to the clean water storage member (5).

4. The industrial wastewater treatment device according to claim 1, characterized in that: The middle layer suspended solid separation component (3) comprises: a middle layer separation port (31), which is located in the middle of the mixing tank (11); a second electrically controlled valve (32), which is provided on the middle layer separation port (31), and the second electrically controlled valve (32) is electrically connected to the controller (6); a second connecting pipe (33), connected to the middle layer separation port (31); A second sedimentation tank (34) is connected to the second connecting pipe (33).

5. An industrial wastewater treatment device according to claim 4, characterized in that: The middle layer suspended solid separation component (3) further comprises: a second water level sensor (35), which is disposed in the second sedimentation tank (34) and is electrically connected to the controller (6); a second telescopic member (36) having a fixed end and a telescopic end, wherein the fixed end of the second telescopic member (36) is fixed to the second sedimentation tank (34), and the telescopic end of the second telescopic member (36) is disposed in the second sedimentation tank (34), and is used to move the telescopic end of the second telescopic member (36) within a preset range to follow the water level of the second sedimentation tank (34); a second spectrometer (37), which is fixed to the telescopic end of the second telescopic member (36) and is electrically connected to the controller (6) for detecting suspended solids at the water level detected by the second water level sensor (35); The second extraction pump (38) has a main body fixed above the second sedimentation tank (34), a water inlet end of the second extraction pump (38) is fixed on the second telescopic member (36), and a water outlet end of the second extraction pump (38) is connected to the clean water storage member (5).

6. The industrial wastewater treatment device according to claim 1, characterized in that: The upper anti-overflow component (4) comprises: an upper overflow prevention port (41) provided at the top of the mixing tank (11); a third connecting pipe (42), connected to the upper anti-overflow port (41); An overflow prevention water storage tank (43) is connected to the third connecting pipe (42).

7. An industrial wastewater treatment device according to claim 6, characterized in that: The upper anti-overflow component (4) further comprises: a third water level sensor (44), which is disposed in the anti-overflow reservoir (43) and is electrically connected to the controller (6); an alarm (45) electrically connected to the controller (6) and configured to generate an alarm when the third water level sensor (44) detects that the water level in the overflow prevention reservoir (43) exceeds a preset threshold; The third extraction pump (46) has a main body fixed on the overflow prevention water reservoir (43), a water inlet end of the third extraction pump (46) is arranged in the overflow prevention water reservoir (43), and a water outlet end of the third extraction pump (46) is arranged in the mixing tank (11).

8. The industrial wastewater treatment device according to claim 1, characterized in that: The reagent delivery member (12) comprises: a reagent kit (121), which is arranged on the mixing tank (11); A reagent delivery valve (122) is provided at the bottom of the reagent box (121), and the reagent delivery valve (122) is electrically connected to the controller (6).

9. The industrial wastewater treatment device according to claim 1, characterized in that: The clean water storage element (5) comprises: A clean water storage tank (51) is used to provide clean water to the mixing tank (11); a fourth water level sensor (52), which is disposed in the clean water storage tank (51) and is electrically connected to the controller (6); The fourth extraction pump (53) has a main body fixed on the clean water storage tank (51), a water inlet end of the fourth extraction pump (53) is arranged in the clean water storage tank (51), and a water outlet end of the fourth extraction pump (53) is arranged in the mixing tank (11).

10. The industrial wastewater treatment device according to claim 1, characterized in that: The invention also includes a mixing tank water level sensor (14), which is arranged in the mixing tank (11) and is electrically connected to the controller (6) for sensing the water level in the mixing tank (11), so that the controller (6) can coordinate and control the operation of the mixing and stirring element (13), the lower sedimentation separation element (2), the middle suspended solid separation element (3) and the clean water storage element (5).

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