Electroplating wastewater pretreatment equipment and electroplating wastewater treatment system

Abstract

The utility model provides electroplating wastewater pretreatment equipment and an electroplating wastewater treatment system. The electroplating wastewater pretreatment equipment comprises an ozone tower, a raw water storage tank for storing electroplating wastewater, a bag filter, a PH regulating tank and a PH detector. The bag filter is communicated with the raw water storage tank and is used for filtering the electroplating wastewater and conveying the electroplating wastewater to the ozone tower. The PH adjusting tank is communicated with the raw water storage tank, and the electroplating wastewater can circulate between the PH adjusting tank and the raw water storage tank so as to adjust the PH of the electroplating wastewater. The PH detector is arranged at the raw water storage tank and is used for detecting the PH of the electroplating wastewater. According to the electroplating wastewater pretreatment equipment, the catalytic oxidation treatment effect can be improved by utilizing the existing ozone catalytic oxidation device on the basis of reducing the dosage of chemicals and reducing the generation of sludge.

Description

TECHNICAL FIELD

[0001] The utility model relates to wastewater treatment technical field especially is related to a kind of electroplating wastewater pretreatment equipment and electroplating wastewater treatment system. BACKGROUND

[0002] A large amount of high-concentration organic wastewater is generated in the process of electroplating production. This type of wastewater has extremely high COD content and poor biodegradability, making it extremely difficult to treat. The subsequent biochemical system degradation treatment is a heavy burden. The conventional Fenton oxidation method is used to treat high-concentration organic wastewater, and the treatment efficiency is low. A large amount of chemical agents need to be added during the wastewater treatment process, resulting in high cost of agents and increased sludge production, which affects the overall operation cost of wastewater treatment. For example, the utility model patent application with the application number CN202022541669.5 sets a coagulation sedimentation tank, which results in high cost of agents and increased sludge production. For example, the utility model patent application with the application number CN202220103633.5 increases the liquid storage structure to add agents to the high-concentration organic wastewater formed in the electroplating production, which results in high cost of agents. For example, the utility model patent application with the application number CN202122824685.X directly filters and catalytically oxidizes ozone to improve the catalytic oxidation treatment effect of COD in high-concentration organic wastewater. However, the catalytic oxidation treatment effect of COD in high-concentration organic wastewater is actually poor for conventional ozone catalytic oxidation devices, and the improvement of ozone catalytic oxidation devices is costly. SUMMARY

[0003] The utility model aims to overcome the shortcomings of the prior art, provide an electroplating wastewater pretreatment equipment and electroplating wastewater treatment system that can reduce the addition of agents and the production of sludge, and improve the catalytic oxidation treatment effect using existing ozone catalytic oxidation devices.

[0004] The utility model aims to achieve the following technical solutions:

[0005] An electroplating wastewater pretreatment equipment includes an ozone tower. The electroplating wastewater pretreatment equipment further includes:

[0006] A raw water storage tank for storing electroplating wastewater;

[0007] A bag filter is in communication with the raw water storage tank. The bag filter is used to filter and transport the electroplating wastewater to the ozone tower.

[0008] A PH adjusting tank is in communication with the raw water storage tank. The electroplating wastewater can circulate between the PH adjusting tank and the raw water storage tank to adjust the PH of the electroplating wastewater.

[0009] A PH detector is arranged at the raw water storage tank to detect the PH of the electroplating wastewater.

[0010] In one of the embodiments, the bag filter comprises a filter shell and a filter bag, the filter shell is provided with a water overflow port, a water inlet port and a water outlet port, the water overflow port and the water inlet port are oppositely arranged at two ends of the filter shell, and the water outlet port and the water inlet port are both arranged at a bottom end of the filter shell;

[0011] The filter bag is connected to the filter shell to form a filter cavity and a buffer cavity, the water overflow port and the water inlet port are both arranged at two ends of the filter cavity and communicate with the filter cavity, the water outlet port communicates with the filter cavity, and the water overflow port communicates with the raw water storage tank.

[0012] In one of the embodiments, the two ends of the filter bag are arranged in one-to-one correspondence with the two ends of the filter shell.

[0013] The filter bag is open at both ends, and the periphery of the end of the filter bag is connected to the inner wall of the filter shell.

[0014] In one of the embodiments, the water overflow port is connected with a blocking member and a water overflow pipe, the blocking member is arranged at the water overflow port, the water overflow pipe is connected to the blocking member, the water overflow pipe communicates with the filter cavity, and a water stop valve is arranged on the water overflow pipe.

[0015] In one of the embodiments, the bag filter further comprises a metal rigid net, the metal rigid net is arranged in the buffer cavity and connected to the filter shell, and the metal rigid net is arranged in close contact with the side wall of the filter bag.

[0016] In one of the embodiments, the metal rigid net is a titanium alloy net and a stainless steel net.

[0017] In one of the embodiments, part of the inner wall of the filter shell forms an annular clamping interface, the annular clamping interface is arranged at one end of the filter shell close to the water overflow port, and the annular clamping interface is arranged at the buffer cavity and abuts against one side of the metal rigid net away from the filter bag.

[0018] In one of the embodiments, the filter bag is a PPS filter bag or a PP filter bag.

[0019] In one of the embodiments, two conveying pipes are arranged between the PH adjusting tank and the raw water storage tank, each of the conveying pipes is communicated with the PH adjusting tank and the raw water storage tank respectively, and a water pump is connected at each of the conveying pipes, and the electroplating wastewater is circulated between the PH adjusting tank and the raw water storage tank by the water pump.

[0020] In one of the embodiments, the number of the bag filters is several, and each of the bag filters is communicated with the raw water storage tank and the ozone tower.

[0021] A kind of electroplating wastewater treatment system, including buffer tank and the electroplating wastewater pretreatment equipment of any one embodiment described above, the buffer tank is communicated with the ozone tower.

[0022] Compared with prior art, the utility model at least has following advantages:

[0023] The electroplating wastewater pretreatment equipment of the utility model, make bag filter to the electroplating wastewater in raw water storage tank carry out filtration, better ensure that the catalytic oxidation stability of electroplating wastewater in ozone tower is removed to the particle impurity in electroplating wastewater, and then input in ozone tower carries out catalytic oxidation, better ensure that the catalytic oxidation stability of electroplating wastewater in ozone tower is removed to the particle impurity in electroplating wastewater, and then input in ozone tower carries out catalytic oxidation, and the PH of electroplating wastewater is adjusted to 6~8 before the electroplating wastewater is input to ozone tower, especially 7, and is monitored by PH detector to better ensure the PH of electroplating wastewater, and then make the activity of catalytic oxidation of electroplating wastewater input to ozone tower be enhanced, and COD processing rate can reach 60%, better reduce the addition of reagent and reduce the generation of sludge, and better realize the improvement of catalytic oxidation treatment effect, avoid the problem of higher cost of the structure of ozone tower. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be needed to use the drawings in the embodiments briefly introduced, and should understand, the following drawings only shows some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other related drawings according to these drawings.

[0025] Figure 1 It is the structural schematic diagram of the electroplating wastewater pretreatment equipment of an embodiment of the utility model;

[0026] Figure 2 It is Figure 1 It is the partial view of the electroplating wastewater pretreatment equipment shown;

[0027] Figure 3 It is Figure 1A partial sectional view of the electroplating wastewater pretreatment equipment shown;

[0028] Figure 4 For Figure 3 A partial enlarged view of A of the electroplating wastewater pretreatment equipment shown. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present application can be more thoroughly and completely understood.

[0030] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "left", "right" and similar expressions as used herein are for illustrative purposes only and are not intended to be limiting.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0032] The present application provides an electroplating wastewater pretreatment equipment. The electroplating wastewater pretreatment equipment comprises an ozone tower, a raw water storage tank for storing electroplating wastewater, a bag filter, a PH adjusting tank and a PH detector. The bag filter is in communication with the raw water storage tank, and the bag filter is used for filtering the electroplating wastewater and conveying the electroplating wastewater to the ozone tower. The PH adjusting tank is in communication with the raw water storage tank, and the electroplating wastewater can circulate between the PH adjusting tank and the raw water storage tank to adjust the PH of the electroplating wastewater. The PH detector is arranged at the raw water storage tank to detect the PH of the electroplating wastewater.

[0033] The electroplating wastewater pretreatment equipment makes the bag filter filter the electroplating wastewater in the raw water storage tank, better ensures the sufficient removal of the particulate impurities in the electroplating wastewater, then inputs the electroplating wastewater into the ozone tower for catalytic oxidation, better ensures the catalytic oxidation stability of the ozone tower for the electroplating wastewater, adjusts the PH of the electroplating wastewater to 6-8, especially 7, through the PH adjusting tank before the electroplating wastewater is input into the ozone tower, monitors the PH of the electroplating wastewater through the PH detector, better ensures the PH of the electroplating wastewater, and then enhances the activity of the catalytic oxidation of the electroplating wastewater in the ozone tower, the COD treatment rate can reach 60%, better reduces the addition of the reagent and the generation of the sludge, better improves the catalytic oxidation treatment effect, and avoids the problem of high cost due to the structure modification of the ozone tower.

[0034] In order to better understand the electroplating wastewater pretreatment equipment of the present application, the electroplating wastewater pretreatment equipment of the present application is further explained as follows:

[0035] Please participate Figures 1 to 4 The electroplating wastewater pretreatment equipment 10 of an embodiment includes an ozone tower 100, a raw water storage tank 200 for storing electroplating wastewater, a bag filter 300, a PH adjusting tank 400, and a PH detector (not shown in the figure). The bag filter 300 is in communication with the raw water storage tank 200, and the bag filter 300 is used for filtering the electroplating wastewater and conveying the electroplating wastewater to the ozone tower 100. The PH adjusting tank 400 is in communication with the raw water storage tank, and the electroplating wastewater can circulate between the PH adjusting tank 400 and the raw water storage tank 200 to adjust the PH of the electroplating wastewater to 6-8. The PH detector is arranged at the raw water storage tank 200 to detect the PH of the electroplating wastewater.

[0036] The electroplating wastewater pretreatment equipment 10 makes the bag filter 300 filter the electroplating wastewater in the raw water storage tank 200, better ensures the sufficient removal of the particulate impurities in the electroplating wastewater, then inputs the electroplating wastewater into the ozone tower 100 for catalytic oxidation, better ensures the catalytic oxidation stability of the ozone tower 100 for the electroplating wastewater, adjusts the PH of the electroplating wastewater to 6-8, especially 7, through the PH adjusting tank 400 before the electroplating wastewater is input into the ozone tower 100, monitors the PH of the electroplating wastewater through the PH detector, better ensures the PH of the electroplating wastewater, and then enhances the activity of the catalytic oxidation of the electroplating wastewater in the ozone tower 100, the COD treatment rate can reach 60%, better reduces the addition of the reagent and the generation of the sludge, better improves the catalytic oxidation treatment effect, and avoids the problem of high cost due to the structure modification of the ozone tower 100.

[0037] Please participate Figures 1 to 4In one of the embodiments, the bag filter 300 comprises a filter shell 310 and a filter bag 320, the filter shell 310 is provided with a water overflow port 301, a water inlet port 302 and a water outlet port 303, the water overflow port 301 and the water inlet port 302 are oppositely located at the two ends of the filter shell 310, and the water outlet port 303 and the water inlet port 302 are both located at the bottom end of the filter shell 310. Further, the filter bag 320 is connected to the inside of the filter shell 310 to form a filter cavity 305 and a buffer cavity 306, the water overflow port 301 and the water inlet port 302 are respectively located at the two ends of the filter cavity 305 and both communicate with the filter cavity 305, the water outlet port 303 communicates with the filter cavity 305, and the water overflow port 301 communicates with the raw water storage pool 200. It can be understood that the bag filter 300 makes the water inlet port 302 located at the bottom of the filter shell 310, thereby making the electroplating wastewater gradually fill the entire filter cavity 305 from the bottom of the filter shell 310, reducing the impact of the electroplating wastewater on the bottom of the filter bag 320, thereby reducing the impact damage of the filter bag 320, and at this time the electroplating wastewater is filtered by the filter bag 320 and enters the buffer cavity 306, cooperating with the water outlet port 303 located at the bottom of the filter shell 310, so that the electroplating wastewater in the buffer cavity 306 is quickly discharged; in addition, the water overflow port 301 is arranged at the top of the filter shell 310, so that when the filter bag 320 is blocked, opening the overflow port can quickly realize the washing or replacement of the filter bag 320, thereby improving the use convenience of the bag filter 300.

[0038] Please participate together Figures 1 to 4 In one of the embodiments, the two ends of the filter bag 320 are arranged in one-to-one correspondence with the two ends of the filter shell 310. Further, the filter bag 320 is open at both ends, and the periphery of the end of the filter bag 320 is connected to the inner wall of the filter shell 310. Further, the periphery of the filter bag is bonded to the inner wall of the filter shell by glue, so as to better ensure the effective separation of the filter cavity 305 and the buffer cavity 306.

[0039] Please participate together Figures 1 to 4 In one of the embodiments, the water overflow port 301 is connected with a blocking piece 330 and a water overflow pipe 340, the blocking piece 330 is blocked at the water overflow port 301, the water overflow pipe 340 is connected to the blocking piece 330, and the water overflow pipe 340 communicates with the filter cavity 305, and a water stop valve (not shown in the figure) is connected to the water overflow pipe 340, thereby better improving the use convenience of the bag filter 300.

[0040] Please participate together Figures 1 to 4 In one of the embodiments, the bag filter 300 further comprises a metal rigid net 350, the metal rigid net 350 is arranged in the buffer cavity 306 and connected with the filter shell 310, and the metal rigid net 350 is arranged in close contact with the side wall of the filter bag 320, thereby better ensuring the stability of the arrangement of the filter bag 320 and the filter shell 310.

[0041] In one of the embodiments, the metal rigid net is a titanium alloy net and a stainless steel net, which preferably ensures the stability of the filter bag in the filter shell.

[0042] Please participate Figures 1 to 4 In one of the embodiments, the part of the inner wall of the filter shell 310 forms an annular clamping interface 304, which is located at one end of the filter shell 310 close to the overflow port 301, and the annular clamping interface 304 is located at the buffer cavity 306 and abuts against the side of the metal rigid net 350 away from the filter bag 320, which preferably ensures the stability of the metal rigid net 350 in the filter shell 310.

[0043] In one of the embodiments, the filter bag is a PPS filter bag or a PP filter bag, which preferably ensures the sufficient filtration of the particulate impurities in the electroplating wastewater.

[0044] Please participate Figures 1 to 4 In one of the embodiments, two conveying pipes 500 are arranged between the PH adjusting tank 400 and the raw water storage tank 200, each of the conveying pipes 500 is in communication with the PH adjusting tank 400 and the raw water storage tank 200, and a water pump (not shown in the figure) is connected at each of the conveying pipes 500. The electroplating wastewater can be circulated between the PH adjusting tank 400 and the raw water storage tank 200 through the water pump, which preferably ensures the circulation of the electroplating wastewater between the PH adjusting tank 400 and the raw water storage tank 200, and makes the PH adjusting tank 400 also store the electroplating wastewater, thereby reducing the size of the raw water storage tank 200 and improving the universality of the electroplating wastewater pretreatment equipment 10.

[0045] Please participate Figures 1 to 4 In one of the embodiments, the number of the bag filters 300 is several, and each of the bag filters 300 is in communication with the raw water storage tank 200 and the ozone tower 100, so that when any of the bag filters 300 is blocked, the remaining bag filters 300 can be used to filter the electroplating wastewater without interrupting the treatment of the electroplating wastewater, and the blocked bag filter 300 can be maintained at any time, which preferably ensures the treatment efficiency of the electroplating wastewater.

[0046] The application also provides an electroplating wastewater treatment system. The electroplating wastewater treatment system in one of the embodiments comprises a buffer tank and the electroplating wastewater pretreatment equipment in any of the above embodiments, and the buffer tank is in communication with the ozone tower. Further, please refer to ​In the embodiment, the electroplating wastewater pretreatment device 10 comprises an ozone tower 100, a raw water storage tank 200 for storing electroplating wastewater, a bag filter 300, a PH adjusting tank 400 and a PH detector. The bag filter 300 is communicated with the raw water storage tank 200, and the bag filter 300 is used for filtering and conveying the electroplating wastewater to the ozone tower 100. The PH adjusting tank 400 is communicated with the raw water storage tank, and the electroplating wastewater can circulate between the PH adjusting tank 400 and the raw water storage tank 200 to adjust the PH of the electroplating wastewater to 6-8. The PH detector is arranged at the raw water storage tank 200 to detect the PH of the electroplating wastewater.

[0047] The electroplating wastewater treatment system has the electroplating wastewater pretreatment device, and can reduce the addition of reagents and the generation of sludge, avoid the problem of high cost caused by the modification of the ozone tower, and improve the catalytic oxidation treatment effect.

[0048] Compared with the prior art, the electroplating wastewater pretreatment device has at least the following advantages:

[0049] The electroplating wastewater pretreatment device 10 can filter the electroplating wastewater in the raw water storage tank 200 by the bag filter 300, thereby ensuring the sufficient removal of particulate impurities in the electroplating wastewater, and then inputting the electroplating wastewater into the ozone tower 100 for catalytic oxidation, thereby ensuring the catalytic oxidation stability of the electroplating wastewater in the ozone tower 100. The PH of the electroplating wastewater is adjusted to 6-8, especially 7, by the PH adjusting tank 400 before the electroplating wastewater is input into the ozone tower 100, and the PH of the electroplating wastewater is monitored by the PH detector, so that the activity of the electroplating wastewater input into the ozone tower 100 for catalytic oxidation is enhanced, the COD treatment rate can reach 60%, the addition of reagents and the generation of sludge are reduced, the catalytic oxidation treatment effect is improved, and the problem of high cost caused by the modification of the structure of the ozone tower 100 is avoided.

[0050] The above embodiments only express several implementation manners of the utility model, and the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent range. It should be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A pretreatment device for electroplating wastewater, comprising an ozone tower, characterized in that, The electroplating wastewater pretreatment equipment also includes: Raw water storage tank used for storing electroplating wastewater; A bag filter, which is connected to the raw water storage tank, is used to filter the electroplating wastewater and transport it to the ozone tower. A pH adjustment tank is provided, which is connected to the raw water storage tank. The electroplating wastewater can circulate between the pH adjustment tank and the raw water storage tank to adjust the pH of the electroplating wastewater. A pH meter is installed at the raw water storage tank to detect the pH of the electroplating wastewater.

2. The electroplating wastewater pretreatment equipment according to claim 1, characterized in that, The bag filter includes a filter housing and a filter bag. The filter housing has an overflow port, an inlet port and an outlet port. The overflow port and the inlet port are located opposite each other at the two ends of the filter housing. The outlet port and the inlet port are both located at the bottom end of the filter housing. The filter bag is connected to the inside of the filter housing to form a filter chamber and a buffer chamber at intervals. The overflow port and the inlet port are located at opposite ends of the filter chamber and are both connected to the filter chamber. The outlet port is connected to the filter chamber, and the overflow port is connected to the raw water storage tank.

3. The electroplating wastewater pretreatment equipment according to claim 2, characterized in that, The two ends of the filter bag are respectively set to correspond one-to-one with the two ends of the filter shell; The filter bag is open at both ends, and the periphery of the ends of the filter bag is connected to the inner wall of the filter housing.

4. The electroplating wastewater pretreatment equipment according to claim 2, characterized in that, A plug and an overflow pipe are connected to the overflow outlet. The plug is placed at the overflow outlet, and the overflow pipe is connected to the plug and communicates with the filter chamber. A stop valve is connected to the overflow pipe.

5. The electroplating wastewater pretreatment equipment according to claim 2, characterized in that, The bag filter also includes a rigid metal mesh, which is disposed in the buffer chamber and connected to the filter housing, and is disposed in close contact with the side wall of the filter bag.

6. The electroplating wastewater pretreatment equipment according to claim 5, characterized in that, The rigid metal mesh is made of titanium alloy or stainless steel.

7. The electroplating wastewater pretreatment equipment according to claim 5, characterized in that, A portion of the inner wall of the filter housing forms an annular snap-fit ​​interface. The annular snap-fit ​​interface is located at one end of the filter housing near the overflow port, and is located in the buffer cavity, abutting against the side of the rigid metal mesh away from the filter bag.

8. The electroplating wastewater pretreatment equipment according to claim 2, characterized in that, The filter bag is a PPS filter bag or a PP filter bag.

9. The electroplating wastewater pretreatment equipment according to claim 1, characterized in that, Two delivery pipes are installed between the pH adjustment tank and the raw water storage tank, with each delivery pipe connected to both the pH adjustment tank and the raw water storage tank. A water pump is connected to each delivery pipe, allowing the electroplating wastewater to circulate between the pH adjustment tank and the raw water storage tank via these pumps; and / or, The number of bag filters is several, and each bag filter is connected to the raw water storage tank, and each bag filter is connected to the ozone tower.

10. An electroplating wastewater treatment system, characterized in that, It includes a buffer pool and an electroplating wastewater pretreatment device according to any one of claims 1 to 9, wherein the buffer pool is connected to the ozone tower.

Images