Electroplating sewage treatment equipment and method

Abstract

The invention discloses electroplating sewage treatment equipment and method, and relates to the technical field of sewage treatment. Comprising an equipment body, a medicament adding assembly and a cleaning assembly, the medicament adding assembly and the cleaning assembly are fixed to the outer wall of the equipment body, a screening assembly used for intercepting precipitates and an adsorption assembly used for pumping sewage are arranged in the equipment body, and the equipment body comprises a main box body; the agent adding assembly comprises a plurality of agent boxes fixed to the outer wall of the main box body, and adding pumps are fixedly connected to the tops of the agent boxes. According to the sewage treatment device, chemicals are added into the main box body in a small amount and multiple times according to a set sequence, so that the chemicals are fully diffused in sewage and fully react with the sewage, and precipitates generated in the reaction process can be continuously intercepted and screened out in the reciprocating lifting process of the lifting plate; the diffusion effect of the medicament in the sewage is better facilitated, the treatment capacity of the medicament is improved, and the influence of precipitates on the diffusion of the medicament is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to an electroplating sewage treatment device and method. Background Art

[0002] Electroplating wastewater refers to wastewater generated during the electroplating process. These wastewaters usually contain a variety of pollutants, including heavy metal ions, organic matter, acids, alkalis and suspended solids, which may pose a serious threat to the environment and human health. These heavy metals are highly toxic and difficult to degrade in the environment. Small particles and sediments generated during the electroplating process, such as metal particles and oxides, will affect the water quality. When treating electroplating wastewater, larger solid particles are usually removed by setting up a grid. A grit chamber is used to settle smaller particles to reduce the subsequent treatment load. Then, chemicals are used to react with heavy metal ions in the wastewater to form precipitates, which are then removed by sedimentation.

[0003] Patent publication number CN118206198A is an electroplating wastewater treatment equipment and treatment method. By setting a separation component, after flocculation is completed, two electric telescopic rods are started, and the output rods of the two electric telescopic rods drive the two top rods together with the retention plunger to move upward, so that the retention plunger is separated from the bottom wall of the flocculation barrel, and the clean water and flocculants after flocculation in the flocculation barrel are discharged into the inside of the circular groove, and then discharged into the inside of the plastic pipe. During this period, the fluid force drives the impeller to rotate, and the impeller drives the crushing shaft rod to rotate. The rotation of the crushing shaft rod drives multiple guide rods to rotate, and the multiple guide rods drive multiple sliding seats together with four electromagnetic plates to rotate. The rotation of the four electromagnetic plates drives the four crushing rods to rotate together, breaking the flocculants to prevent the flocculants from clogging the plastic pipe, ensuring the fluidity of the plastic pipe. At the same time, the electromagnetic sleeve is energized to generate electromagnetic force, and the flocculants containing magnetic attraction are firmly adsorbed on the inner wall of the plastic pipe, while the clean water flows directly downward through the plastic pipe to completely separate the flocculants from the water.

[0004] When the above-mentioned and similar technical schemes use chemicals to treat electroplating wastewater, the chemicals and electroplating wastewater must be fully mixed to maximize the effect of the chemicals. Since the reaction between the chemicals and electroplating wastewater will generate precipitates, the precipitates will affect the diffusion effect of the chemicals. As the precipitates increase, the diffusion rate of the chemicals and the mixing rate of the chemicals and electroplating wastewater will be further affected, thereby affecting the use effect of the chemicals. When a variety of chemicals are used in combination to treat electroplating wastewater, adding chemicals in batches will cause different types of chemical reactions to occur in the electroplating wastewater and generate different precipitates. At this time, if the precipitates are not treated, they will affect the reaction effect of the next batch of chemicals with the electroplating wastewater. Summary of the invention

[0005] The purpose of the present invention is to provide an electroplating wastewater treatment device and method to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electroplating wastewater treatment device and method, comprising a device body and a reagent adding component and a cleaning component fixed on the outer wall of the device body, a screening component for intercepting sediments and an adsorption component for pumping wastewater are arranged inside the device body, the device body comprises a main box body, the reagent adding component comprises a plurality of reagent boxes fixed on the outer wall of the main box body, the tops of the reagent boxes are all fixedly connected with adding pumps, and the adding pumps are all provided with adding pipes, after the adding pumps are started, the reagents stored in the reagent boxes can be transported to the main box body through the adding pipes for a set target number of times, thereby achieving the reagent adding effect, and different reagent boxes can store different types of reagents; The cleaning assembly comprises an absorption ring arranged at the top of the main box body, a plurality of cleaning pipes are arranged on the absorption ring, the cleaning pipes are all connected to the cleaning pump and the support plate, a sewage discharge pipe is arranged at the bottom of the cleaning pump, the screening assembly comprises a reciprocating screw arranged at the bottom of the main box body, a lifting plate is sleeved on the outer wall of the reciprocating screw, a screening hole is opened on the lifting plate, a driving assembly is arranged at the bottom of the main box body, under the action of the driving assembly, the lifting plate in the main box body will slowly rise and then fall, and the sediment on the top of the lifting plate will be transported to the bottom of the absorption ring, and absorbed and cleaned by the absorption ring; The adsorption assembly includes a plurality of side tubes fixed at the bottom of the main box body, each of which is provided with an augers, each of which is provided with a feed trough. The augers will rotate simultaneously under the action of the driving assembly to suck in the sewage at the bottom of the main box body and discharge it to the top of the lifting plate through the through holes provided on the side tubes.

[0007] Furthermore, the top of the lifting plate is fixedly connected with the first guide platform and the second guide platform respectively. The tops of the first guide platform and the second guide platform are both arc-shaped structures. When the auger sucks the sewage at the bottom of the main box body and discharges it through the through holes arranged on the side cylinder, the sewage impacts the top of the first guide platform and the second guide platform, and the attached sediment will be flushed to the top of the screening hole, which is convenient for the absorption ring to absorb.

[0008] Furthermore, the number of the through holes is at least two groups, and the spacing between the through holes is higher than the combined height of the second guide platform and the lifting plate, so that the through holes are prevented from being blocked during the lifting and lowering process of the second guide platform and the lifting plate.

[0009] Furthermore, a lifting ring is fixedly connected to the top of the second guide platform, and the height of the lifting ring is higher than the maximum height of the second guide platform. When the sewage is discharged through the through hole provided on the side tube, the height of the sediment is prevented from being higher than the height of the lifting ring, thereby preventing the sediment from entering the inside of the side tube through the through hole.

[0010] Furthermore, the drive assembly includes a main gear plate and a secondary gear plate rotatably connected to the bottom of the main box body, the outer walls of the main gear plate and the secondary gear plate are sleeved with toothed belts, a bottom plate is provided at the bottom of the main box body, and a drive motor is fixedly connected to the bottom of the bottom plate, the drive motor is connected to the main gear plate, and a connecting shaft is fixedly connected between the main gear plate and the reciprocating screw rod, as well as between the secondary gear plate and the auger. When the drive motor starts and drives the main gear plate to rotate, the secondary gear plate is also driven to rotate under the action of the toothed belt, and the reciprocating screw rod and the auger rotate at the same time. When the lifting plate screens and transports the sediment, the auger continues to stir and pump the sewage.

[0011] Furthermore, the outer wall of the medicine box is fixedly connected with an indicator plate and a control panel, the medicine box is provided with a medicine liquid level tank, the control panel is electrically connected to the adding pump, and the type of medicine can be marked on the indicator plate.

[0012] Furthermore, a distance sensor is fixedly connected to the top of the reciprocating screw rod, and the distance sensor is electrically connected to the cleaning pump.

[0013] Furthermore, a discharge assembly for discharging sewage is fixedly connected to the bottom of the main box body, and the discharge assembly includes a drain pipe fixed on the main box body, and a drain pump is provided on the drain pipe, and the drain pump is used to control the opening and closing of the drain pipe.

[0014] Furthermore, a control terminal is fixedly connected to the outer wall of the main box body, and a battery panel is fixedly connected to the bottom of the main box body.

[0015] A method for treating electroplating wastewater, using the electroplating wastewater treatment equipment described above, comprising: Step 1: Add sewage and chemicals, add sewage into the main tank body, and add chemicals into the corresponding chemical tank; Step 2: Program setting, respectively setting the number of times and order of adding the medicine in the medicine box to obtain program setting items, and according to the program setting items, the adding pump adds the medicine in the medicine box into the main box body; Step 3: Sedimentation cleaning: the driving assembly drives the auger and the reciprocating screw to rotate at the same time. The lifting plate rises and falls with the rotation of the reciprocating screw, and the sediment accumulated on the top of the lifting plate is transported to the bottom of the absorption ring. Under the action of the cleaning pump, the sediment is absorbed by the cleaning pipe and the absorption ring and discharged through the sewage pipe. Step 4: Circular cleaning. The lifting plate descends back into the main box body under the action of the reciprocating screw. Under the action of the auger, the sewage and sediment at the bottom of the main box body are continuously absorbed and discharged through the through-hole. When the lifting plate descends below the through-hole, the sewage and sediment will fall on the top of the lifting plate. The lifting plate will continue to rise on the top of the lifting plate as it touches the bottom and rises repeatedly until the height exceeds the through-hole. With the addition of reagents, sediment will be generated in batches and will be continuously screened and cleaned during the lifting and lowering process of the lifting plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The electroplating wastewater treatment equipment and method, through the provision of reagent boxes, three reagent boxes respectively store three reagents, namely liquid alkali, sodium hypochlorite and sodium bisulfite, which are added into the main box body in a set order in a small amount and multiple times. The small amount of addition can make the reagents fully diffuse in the sewage and fully react with the sewage, and the precipitate generated in the reaction process will be continuously intercepted and screened during the reciprocating lifting of the lifting plate, and the precipitate will be absorbed by the absorption ring, which is more conducive to the diffusion effect of the reagent in the sewage, improves the treatment capacity of the reagent, and prevents the precipitate from affecting the diffusion of the reagent.

[0017] At the same time, the method of adding small amounts multiple times will not cause excessive addition of reagents, and prevent the reagents from being mixed in the sediment and unable to be effectively diffused, which is beneficial to saving reagents. When the distance sensor detects that the height of the lifting plate is in an ascending state and reaches the set threshold, the cleaning pump will be started and the absorption ring will be put into working state to pre-absorb the upcoming sediment.

[0018] Moreover, through the auger, when the medicine is added into the main box body, since the lifting plate is in a reciprocating lifting state, and the auger and the reciprocating screw rotate simultaneously, part of the sediment accumulated at the bottom of the lifting plate will be absorbed and discharged through the through hole. When the descending height of the lifting plate is lower than the through hole, the sewage and sediment will fall on the top of the lifting plate. This process will continue until the height of the lifting plate exceeds the height of the through hole, thereby achieving the effect of cleaning the sediment at the bottom of the lifting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the back structure of the present invention; Figure 3 It is a schematic diagram of the internal structure of the main box body of the present invention; Figure 4 It is a schematic diagram of the overall bottom-up structure of the present invention; Figure 5It is a schematic diagram of the structure of the toothed belt, the main toothed disc and the auxiliary toothed disc of the present invention; Figure 6 It is a schematic diagram of the side tube structure of the present invention; Figure 7 It is a schematic diagram of the structure of the auger of the present invention; Figure 8 It is a schematic diagram of the distance sensor structure of the present invention.

[0020] In the figure: 1. Equipment body; 101. Main box body; 102. Control terminal; 2. Drug adding component; 201. Drug box; 202. Indicator board; 203. Control panel; 204. Adding pump; 205. Adding pipe; 206. Drug liquid level tank; 3. Cleaning component; 301. Support plate; 302. Drain pipe; 303. Cleaning pipe; 304. Absorption ring; 305. Distance sensor; 4. Screening component; 401. Lifting plate ; 402, first guide platform; 403, second guide platform; 404, lifting ring; 405, reciprocating screw; 5, adsorption assembly; 501, side cylinder; 502, feed trough; 503, auger; 6, drive assembly; 601, bottom plate; 602, battery panel; 603, drive motor; 604, main gear disc; 605, toothed belt; 606, auxiliary gear disc; 606, connecting shaft; 7, discharge assembly; 701, drainage pump; 702, drainage pipe. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] When the reagent is combined with the electroplating wastewater, the organic pollutants and some heavy metal ions in the wastewater will be oxidized or precipitated. When a large amount of precipitates accumulate together, if the reagent continues to be added to the wastewater, the precipitates will affect the diffusivity of the reagent and the combination effect with the wastewater, thereby affecting the reaction effect of the reagent on the pollutants and metal ions in the wastewater. The technical solution provided in the present application sets the reagent to be added in small amounts and multiple times, and sets a liftable screening component in the equipment. The screening component is controlled by a reciprocating screw mechanism. When the reagent is added to the equipment, as the reagent mixes with the electroplating wastewater, the screening component slowly rises from the bottom of the equipment and intercepts the generated precipitates at the top of the screening component. As the screening component reaches the top, it triggers the cleaning component to clean the precipitates deposited on the top of the screening component. At this time, the screening component descends to the bottom of the equipment again. During the lifting and lowering process of the screening component, the adsorption component arranged in the equipment will continuously extract the electroplating wastewater at the bottom of the screening component and transport it upward under the action of the reciprocating screw mechanism, and discharge it at the middle section of the equipment. At this time, as the screening component continues to descend, the sinking objects that may exist at the bottom of the screening component will also be continuously pumped to the top of the screening component, so as to facilitate the screening component to intercept and clean the sediment next time. Since the addition of the reagent is a small amount and multiple times, a certain amount of sediment will be generated each time it is added, and the screening component will intercept and clean the sediment each time, thereby ensuring that the sediment in the equipment is always in a low content state, and in the process of the screening component lifting and lowering, it will drive the electroplating wastewater to stir, thereby accelerating the mixing of the reagent and the electroplating wastewater.

[0023] like Figure 1-Figure 3 , Figure 6 , Figure 7As shown, the present invention provides a technical solution: an electroplating wastewater treatment device and method, comprising an equipment body 1 and a reagent adding component 2 and a cleaning component 3 fixed on the outer wall of the equipment body 1, a screening component 4 for intercepting sediment and an adsorption component 5 for pumping sewage are arranged inside the equipment body 1, the equipment body 1 comprises a main box body 101, the reagent adding component 2 comprises a plurality of reagent boxes 201 fixed on the outer wall of the main box body 101, the top of the reagent box 201 is fixedly connected with a adding pump 204, and the adding pump 204 is provided with an adding pipe 205, after the adding pump 204 is started, the reagent stored in the reagent box 201 can be transported to the main box body 101 through the adding pipe 205 at a set target number of times, thereby achieving the reagent adding effect, and different reagent boxes 201 can store different types of reagents; the cleaning component 3 comprises an absorption ring 304 arranged on the top of the main box body 101, and a plurality of cleaning components 305 are arranged on the absorption ring 304 The cleaning pipe 303 is connected to the cleaning pump and the support plate 301. The bottom of the cleaning pump is provided with a sewage pipe 302. The screening component 4 includes a reciprocating screw rod 405 arranged at the bottom of the main box body 101. The outer wall of the reciprocating screw rod 405 is sleeved with a lifting plate 401. The lifting plate 401 is provided with screening holes. The bottom of the main box body 101 is provided with a driving component 6. Under the action of the driving component 6, the lifting plate 401 in the main box body 101 will slowly rise and then fall, and the treatment The sediment on the top of the lifting plate 401 is transported to the bottom of the absorption ring 304 and is absorbed and cleaned by the absorption ring 304; the adsorption component 5 includes a plurality of side tubes 501 fixed to the bottom of the main box body 101, each of which is provided with an auger 503, and each of which is provided with a feed trough 502. The auger 503 will rotate simultaneously under the action of the driving component 6 to suck in the sewage at the bottom of the main box body 101 and discharge it to the top of the lifting plate 401 through the through holes provided on the side tubes 501.

[0024] It should be noted that there are three reagent boxes 201, so three reagents can be stored, and the reagents are liquid alkali, sodium hypochlorite and sodium bisulfite, and the order of adding the three reagents is: first, liquid alkali is added to adjust the pH value of the sewage, and the pH of the sewage is adjusted to an alkaline range of 8-11, which is helpful for the subsequent precipitation and removal of heavy metals. In an alkaline environment, many heavy metals such as chromium and nickel will precipitate in the form of hydroxides. Secondly, sodium hypochlorite is added. After the pH is adjusted, sodium hypochlorite is then added. In an alkaline environment, sodium hypochlorite can effectively oxidize the sewage. Organic pollutants and some heavy metal ions in the water, and it also has a disinfecting effect, which can remove bacteria and viruses in the water. Finally, sodium bisulfite is added, which is mainly used to reduce some high-valent heavy metal ions, such as converting hexavalent chromium into trivalent chromium, promoting its precipitation and removal, and also can remove the remaining chlorine in the water to prevent negative impact on subsequent treatment or discharge. The three agents are stored in three agent boxes 201 respectively, and each agent box 201 adds the agents in the agent box 201 into the main box body 101 in small amounts and multiple times according to the set program.

[0025] It should be noted that since the lifting plate 401 is constantly in a reciprocating lifting state under the action of the reciprocating screw rod 405, when the agent is added into the main box body 101 in a small amount and multiple times and reacts with the sewage, each small amount of addition can make the agent fully diffuse in the sewage and fully react with the sewage, and the precipitate generated during the reaction will be continuously intercepted and screened as the lifting plate 401 reciprocates, and the precipitate will be absorbed by the absorption ring 304, which is more conducive to the diffusion effect of the agent in the sewage, improves the treatment capacity of the agent, and prevents the precipitate from affecting the diffusion of the agent. In addition, the addition of small amounts and multiple times will not cause excessive addition of the agent, and prevents the agent from being mixed in the precipitate and unable to be effectively diffused, which is beneficial to saving the agent.

[0026] It should be noted that when the reagent is added into the main box body 101, since the lifting plate 401 is in a reciprocating lifting state, and the auger 503 and the reciprocating screw 405 rotate simultaneously, part of the sediment accumulated at the bottom of the lifting plate 401 will be absorbed and discharged through the through hole. When the descending height of the lifting plate 401 is lower than the through hole, the sewage and sediment will fall on the top of the lifting plate 401. This process will continue until the height of the lifting plate 401 exceeds the height of the through hole, thereby achieving the effect of cleaning the sediment at the bottom of the lifting plate 401. In the process of the auger 503 conveying the sewage, the reagent conveyed into the main box body 101 will be fully mixed with the electroplating sewage, so that the reagent is fully stirred in the main box body 101, further improving the reaction effect of the reagent.

[0027] like Figure 3As shown, the top of the lifting plate 401 is fixedly connected with the first guide platform 402 and the second guide platform 403 respectively. The tops of the first guide platform 402 and the second guide platform 403 are both arc-shaped structures. When the auger 503 sucks the sewage at the bottom of the main box body 101 and discharges it through the through holes set on the side tube 501, the sewage impacts the top of the first guide platform 402 and the second guide platform 403, and the attached sediment will be flushed to the top of the screening hole, which is convenient for the absorption ring 304 to absorb.

[0028] It should be noted that when the lifting plate 401 rises, the intercepted sediment will roll along the first guide platform 402 and the second guide platform 403 to between the first guide platform 402 and the second guide platform 403 when it accumulates, and the position between the first guide platform 402 and the second guide platform 403 corresponds to the absorption ring 304.

[0029] like Figure 3 As shown, there are at least two groups of through holes, and the spacing between the through holes is higher than the combined height of the second guide platform 403 and the lifting plate 401. During the lifting and lowering process of the second guide platform 403 and the lifting plate 401, blockage of the through holes is avoided.

[0030] like Figure 4 As shown, a lifting ring 404 is fixedly connected to the top of the second guide platform 403, and the height of the lifting ring 404 is higher than the highest height of the second guide platform 403. When sewage is discharged through the through hole set on the side tube 501, the height of the sediment is prevented from being higher than the height of the lifting ring 404, thereby preventing the sediment from entering the inside of the side tube 501 through the through hole.

[0031] like Figure 4-Figure 5 As shown, the driving assembly 6 includes a main toothed disc 604 and a secondary toothed disc 606 rotatably connected to the bottom of the main box body 101, the outer walls of the main toothed disc 604 and the secondary toothed disc 606 are sleeved with a toothed belt 605, a bottom plate 601 is provided at the bottom of the main box body 101, and a driving motor 603 is fixedly connected to the bottom of the bottom plate 601, the driving motor 603 is connected to the main toothed disc 604, and a connecting shaft 607 is fixedly connected between the main toothed disc 604 and the reciprocating screw rod 405, and between the secondary toothed disc 606 and the auger 503. When the driving motor 603 is started and drives the main toothed disc 604 to rotate, the secondary toothed disc 606 is also driven to rotate under the action of the toothed belt 605, and the reciprocating screw rod 405 and the auger 503 rotate at the same time, and when the lifting plate 401 screens and transports the sediment, the auger 503 continues to stir and pump the sewage.

[0032] like Figure 1-Figure 2 As shown, the outer wall of the medicine box 201 is fixedly connected with an indicator plate 202 and a control panel 203, and a medicine liquid level tank 206 is opened on the medicine box 201. The control panel 203 and the adding pump 204 are electrically connected, and the type of medicine can be marked on the indicator plate 202.

[0033] like Figure 8 As shown, the top of the reciprocating screw rod 405 is fixedly connected with a distance sensor 305, and the distance sensor 305 is electrically connected to the cleaning pump.

[0034] It should be noted that when the distance sensor 305 detects that the height of the lifting plate 401 is in an ascending state and reaches a set threshold, the cleaning pump will be started and the absorption ring 304 will be put into operation to pre-absorb the upcoming sediment.

[0035] like Figure 2 and Figure 4 As shown, a discharge assembly 7 for discharging sewage is fixedly connected to the bottom of the main box body 101. The discharge assembly 7 includes a drain pipe 702 fixed on the main box body 101. A drain pump 701 is provided on the drain pipe 702. The drain pump 701 is used to control the opening and closing of the drain pipe 702.

[0036] like Figure 1 and Figure 4 As shown, the control terminal 102 is fixedly connected to the outer wall of the main box body 101 , and the battery panel 602 is fixedly connected to the bottom of the main box body 101 .

[0037] A method for treating electroplating wastewater, using the above-mentioned electroplating wastewater treatment equipment, includes: step one: adding wastewater and reagents, adding wastewater to the inside of the main box body 101, and adding reagents to the corresponding reagent box 201; step two: program setting, respectively setting the number of times and the order of adding reagents in the reagent box 201, obtaining program setting items, according to which the reagents in the reagent box 201 are added to the main box body 101 by the adding pump 204; step three: sedimentation cleaning, the driving component 6 simultaneously drives the auger 503 and the reciprocating screw 405 to rotate, the lifting plate 401 is lifted and lowered with the rotation of the reciprocating screw 405, and the sediment accumulated on the top of the lifting plate 401 is transported to the bottom of the absorption ring 304, and then the sediment is cleaned. Under the action of the cleaning pump, the sediment is absorbed by the cleaning pipe 303 and the absorption ring 304 and discharged through the sewage pipe 302; Step 4: Circular cleaning, the lifting plate 401 is lowered back into the main box body 101 under the action of the reciprocating screw rod 405, and the sewage and sediment at the bottom of the main box body 101 are continuously absorbed and discharged through the through hole under the action of the auger 503. When the descending height of the lifting plate 401 is lower than the through hole, the sewage and sediment will fall on the top of the lifting plate 401. In the process of the lifting plate 401 repeatedly rising after touching the bottom until the height exceeds the through hole, the sewage and sediment will continue to fall on the top of the lifting plate 401. With the addition of the agent, the sediment will be generated in batches and will be continuously screened and cleaned during the lifting and lowering process of the lifting plate 401.

[0038] It should be noted that after completing the program setting items and successfully treating the electroplating wastewater, the purified wastewater in the main box body 101 is tested by sampling and testing, and key indicators such as pH value, chemical oxygen demand, biochemical oxygen demand, heavy metal concentration, suspended solids and chlorine residue are tested. The pH value is tested to ensure that the pH value of the treated water meets the standard range. Too high or too low pH value may affect the ecological environment of the subsequent water body. The concentration of chemical oxygen demand should meet the corresponding standards to evaluate the removal effect of organic pollutants in the water. The biochemical oxygen demand value reflects the concentration of biodegradable substances in the water, which should be lower than the standard requirements after treatment. The concentration of heavy metals, such as common heavy metals such as Chromium, nickel, copper, etc. need to be tested to ensure that their concentrations are lower than the regulatory standards. For example, the emission standard for chromium is below 0.5 mg / L. Suspended solids are measured by measuring the suspended solids concentration in the water to ensure that it is below the regulatory standards. After using sodium hypochlorite, the final chlorine residual in the effluent needs to be monitored to prevent impact on the environment. When the pH value does not meet the standard range, adjust the amount of liquid alkali added according to the difference between the pH value and the standard range. When the chemical oxygen demand, biochemical oxygen demand, heavy metal concentration, and suspended solids do not meet the standard range, increase the amount of sodium hypochlorite and sodium bisulfite added. When the chlorine residual does not meet the standard range, reduce the amount of sodium hypochlorite added and increase the amount of sodium bisulfite added.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. An electroplating wastewater treatment device, comprising a device body (1) and a reagent adding component (2) and a cleaning component (3) fixed to the outer wall of the device body (1), a screening component (4) for intercepting sediment and an adsorption component (5) for pumping wastewater are arranged inside the device body (1), characterized in that: The device body (1) comprises a main box body (101), and the medicine adding component (2) comprises a plurality of medicine boxes (201) fixed to the outer wall of the main box body (101), and the top of each medicine box (201) is fixedly connected to an adding pump (204), and each adding pump (204) is provided with an adding pipe (205). After the adding pump (204) is started, the medicine stored in the medicine box (201) can be transported to the main box body (101) through the adding pipe (205) at a set target number of times, thereby achieving a medicine adding effect, and different medicine boxes (201) can store different types of medicines; The cleaning component (3) comprises an absorption ring (304) arranged at the top of the main box body (101), a plurality of cleaning pipes (303) are arranged on the absorption ring (304), the cleaning pipes (303) are all connected to the cleaning pump and the support plate (301), and a sewage discharge pipe (302) is arranged at the bottom of the cleaning pump; the screening component (4) comprises a reciprocating screw (405) arranged at the bottom of the main box body (101), the outer wall of the reciprocating screw (405) is sleeved with a lifting plate (401), and the lifting plate (401) is provided with screening holes; the bottom of the main box body (101) is provided with a driving component (6), and under the action of the driving component (6), the lifting plate (401) in the main box body (101) will slowly rise and then fall, and the sediment on the top of the lifting plate (401) will be transported to the bottom of the absorption ring (304), and absorbed and cleaned by the absorption ring (304); The adsorption assembly (5) comprises a plurality of side tubes (501) fixed to the bottom of the main box body (101), each of the side tubes (501) being provided with an auger (503), each of the side tubes (501) being provided with a feed trough (502), and the auger (503) will rotate simultaneously under the action of the driving assembly (6) to suck in sewage at the bottom of the main box body (101) and discharge it to the top of the lifting plate (401) through the through holes provided on the side tubes (501).

2. The electroplating wastewater treatment equipment according to claim 1, characterized in that: The top of the lifting plate (401) is respectively fixedly connected to a first guide platform (402) and a second guide platform (403), and the tops of the first guide platform (402) and the second guide platform (403) are both arc-shaped structures. When the auger (503) sucks sewage from the bottom of the main box body (101) and discharges it through the through hole provided on the side tube (501), the sewage impacts the top of the first guide platform (402) and the second guide platform (403), and the attached sediment is flushed to the top of the screening hole, which is convenient for the absorption ring (304) to absorb.

3. The electroplating wastewater treatment equipment according to claim 2 is characterized in that: The number of the through holes is at least two groups, and the spacing between the through holes is higher than the combined height of the second guide platform (403) and the lifting plate (401), so that blockage of the through holes is avoided during the lifting process of the second guide platform (403) and the lifting plate (401).

4. The electroplating wastewater treatment equipment according to claim 2, characterized in that: A lifting ring (404) is fixedly connected to the top of the second guide platform (403); the height of the lifting ring (404) is higher than the highest height of the second guide platform (403); when sewage is discharged through a through hole provided on the side tube (501), the height of the sediment is prevented from being higher than the height of the lifting ring (404), thereby preventing the sediment from entering the inside of the side tube (501) through the through hole.

5. The electroplating wastewater treatment equipment according to claim 1, characterized in that: The driving assembly (6) comprises a main toothed disc (604) and a secondary toothed disc (606) rotatably connected to the bottom of the main box body (101); the outer walls of the main toothed disc (604) and the secondary toothed disc (606) are sleeved with toothed belts (605); a bottom plate (601) is provided at the bottom of the main box body (101); a driving motor (603) is fixedly connected to the bottom of the bottom plate (601); the driving motor (603) is connected to the main toothed disc (604); the main toothed disc (604) is connected to the reciprocating screw rod A connecting shaft (607) is fixedly connected between the main toothed disc (405) and between the auxiliary toothed disc (606) and the auger (503). When the driving motor (603) is started and drives the main toothed disc (604) to rotate, the auxiliary toothed disc (606) is driven to rotate at the same time under the action of the toothed belt (605). The reciprocating screw rod (405) and the auger (503) rotate at the same time. When the lifting plate (401) screens and transports the sediment, the auger (503) continues to stir and pump the sewage.

6. The electroplating wastewater treatment equipment according to claim 1, characterized in that: The outer wall of the medicine box (201) is fixedly connected with an indicator plate (202) and a control panel (203), the medicine box (201) is provided with a medicine liquid level tank (206), the control panel (203) and the adding pump (204) are electrically connected, and the indicator plate (202) can be used to mark the type of medicine.

7. The electroplating wastewater treatment equipment according to claim 1, characterized in that: A distance sensor (305) is fixedly connected to the top of the reciprocating screw rod (405), and the distance sensor (305) is electrically connected to the cleaning pump.

8. The electroplating wastewater treatment equipment according to claim 1, characterized in that: A discharge assembly (7) for discharging sewage is fixedly connected to the bottom of the main box body (101); the discharge assembly (7) comprises a drainage pipe (702) fixed to the main box body (101); a drainage pump (701) is arranged on the drainage pipe (702); and the drainage pump (701) is used to control the opening and closing of the drainage pipe (702).

9. The electroplating wastewater treatment equipment according to claim 1, characterized in that: The outer wall of the main box body (101) is fixedly connected to a control terminal (102), and the bottom of the main box body (101) is fixedly connected to a battery panel (602).

10. A method for treating electroplating wastewater, characterized in that: An electroplating wastewater treatment device according to any one of claims 1 to 9 is used, comprising: Step 1: adding sewage and chemicals, adding sewage into the main box body (101), and adding chemicals into the corresponding chemical box (201); Step 2: Program setting, respectively setting the number of times and the order of adding medicines in the medicine box (201) to obtain program setting items, and according to the program setting items, the adding pump (204) adds the medicines in the medicine box (201) into the main box body (101); Step 3: Sediment cleaning, the driving assembly (6) drives the auger (503) and the reciprocating screw (405) to rotate at the same time, the lifting plate (401) is lifted and lowered along with the rotation of the reciprocating screw (405), and the sediment accumulated on the top of the lifting plate (401) is transported to the bottom of the absorption ring (304), and under the action of the cleaning pump, the sediment is absorbed by the cleaning pipe (303) and the absorption ring (304), and discharged through the sewage pipe (302); Step 4: Circular cleaning. The lifting plate (401) is lowered back into the main box body (101) by the action of the reciprocating screw rod (405). Under the action of the auger (503), the sewage and sediment at the bottom of the main box body (101) are continuously absorbed and discharged through the through hole. When the lowering height of the lifting plate (401) is lower than the through hole, the sewage and sediment will fall on the top of the lifting plate (401). In the process of the lifting plate (401) repeatedly rising after touching the bottom until the height exceeds the through hole, the sewage and sediment will continue to fall on the top of the lifting plate (401). With the addition of the reagent, the sediment will be generated in batches and will be continuously screened and cleaned during the lifting and lowering process of the lifting plate (401).

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