CN211471069U - Treatment device for electroplating mixed wastewater - Google Patents
Treatment device for electroplating mixed wastewater Download PDFInfo
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- CN211471069U CN211471069U CN201922496094.7U CN201922496094U CN211471069U CN 211471069 U CN211471069 U CN 211471069U CN 201922496094 U CN201922496094 U CN 201922496094U CN 211471069 U CN211471069 U CN 211471069U
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Abstract
The utility model relates to the field of wastewater treatment, in particular to a treatment device for electroplating mixed wastewater, which comprises a cyanogen breaking pool, a reduction pool and a sedimentation pool which are connected in sequence through pipelines, and also comprises a control system, a medicament storage tank and a gas storage tank, wherein the cyanogen breaking pool is internally provided with a first-stage cyanogen breaking pool and a second-stage cyanogen breaking pool which are communicated with each other, the first-stage cyanogen breaking pool is communicated with a wastewater tank to be treated, the reduction pool is internally provided with a first reaction chamber and a second reaction chamber which are communicated with each other, the first reaction chamber and the second reaction chamber are both provided with an oxidation-reduction potential on-line analyzer, the first-stage cyanogen breaking pool, the second-stage cyanogen breaking pool, the first reaction chamber, the second reaction chamber and the sedimentation pool are all provided with a pH on-line monitoring controller, and the pH on-line monitoring controller and the oxidation-reduction potential on-line analyzer are respectively connected with the control system, the utility model has the advantages, can effectively remove hexavalent chromium ions and cyanide in the mixed wastewater, and has good treatment effect.
Description
Technical Field
The utility model relates to the technical field of wastewater treatment, in particular to a treatment device for electroplating mixed wastewater.
Background
The main pollutants in the electroplating wastewater are various metal ions, such as chromium, copper, nickel, zinc, tin, gold, silver, cadmium, iron and the like, acid and alkali substances are added, some of the substances also contain cyanide, various organic substances such as brightening agents, detergents, surfactants and the like are added into various plating solutions, and in addition, impurities such as oil, metal oxides and the like are brought into the plating solutions, so the electroplating wastewater is mainly divided into seven types of wastewater according to the water quality condition and source of the electroplating wastewater: the method comprises the following steps of pretreating oily wastewater, mixed wastewater, cyanide wastewater, nickel-containing wastewater, chemical nickel wastewater, chromium-containing wastewater and comprehensive wastewater, wherein the mixed wastewater refers to pollutants discharged from 'running, overflowing, dripping and leaking' of an electroplating workshop, the mixed wastewater is treated with ground washing water, the amount of the pollutants is related to the management level and the equipment of the workshop, and the main pollutants are a small amount of hexavalent chromium ions, a small amount of cyanide and the like.
Because the components of the mixed wastewater are relatively complex, the wastewater containing cyanide, chromium and other complexes is difficult to treat, and the treatment effect of the mixed wastewater in the prior art is not ideal enough.
In view of the above technical problems, there is a need to provide a new treatment device for mixed wastewater from electroplating to better solve the above technical problems.
Disclosure of Invention
In order to solve the problem, the utility model provides a processing apparatus for electroplating waste water that thoughtlessly arranges, its simple structure, reasonable in design, the treatment effect is good.
The utility model adopts the technical proposal that:
a treatment device for electroplating mixed wastewater comprises a cyanogen breaking pool, a reduction pool and a sedimentation pool which are sequentially connected through pipelines, and further comprises a control system, a medicament storage tank and a gas storage tank, wherein the control system is respectively connected with the cyanogen breaking pool, the reduction pool, the sedimentation pool, the medicament storage tank and the gas storage tank, the medicament storage tank is provided with a first medicament chamber, a second medicament chamber, a third medicament chamber, a fourth medicament chamber, a fifth medicament chamber and a sixth medicament chamber, the first medicament chamber is used for storing sodium hydroxide, the second medicament chamber is used for storing sulfuric acid, the third medicament chamber is used for storing sodium hypochlorite, the fourth medicament chamber is used for storing sodium metabisulfite, the fifth medicament chamber is used for storing ferrous sulfate, the sixth medicament chamber is used for storing a pH regulator, a first-stage cyanogen breaking pool and a second-stage cyanogen breaking pool which are mutually communicated are arranged in the cyanogen breaking pool, the first-stage cyanogen breaking pool is communicated with a wastewater tank to be treated, a first reaction chamber and a second reaction chamber, the first reaction chamber is communicated with the second-stage cyanogen breaking tank, the second reaction chamber is communicated with the sedimentation tank, the gas storage tank and the first reagent chamber are communicated with the first-stage cyanogen breaking tank respectively, the second reagent chamber and the third reagent chamber are communicated with the second-stage cyanogen breaking tank, the fourth reagent chamber is communicated with the first reaction chamber, the fifth reagent chamber is communicated with the second reaction chamber, the sixth reagent chamber is communicated with the first reaction chamber, the second reaction chamber and the sedimentation tank respectively, the first reaction chamber and the second reaction chamber are provided with oxidation-reduction potential on-line analyzers respectively, the first-stage cyanogen breaking tank, the second-stage cyanogen breaking tank, the first reaction chamber, the second reaction chamber and the sedimentation tank are provided with pH on-line monitoring controllers, and the pH on-line monitoring controllers and the oxidation-reduction potential on-line analyzers are connected with a control system respectively.
The further improvement of the technical scheme is that the equipment further comprises a first conveying pump and a second conveying pump, the first conveying pump and the second conveying pump are respectively connected with a control system, a first partition plate is arranged between the first-stage cyanogen breaking chamber and the second-stage cyanogen breaking chamber, the first-stage cyanogen breaking chamber and the second-stage cyanogen breaking chamber are communicated through the first conveying pump, a second partition plate is arranged between the first reaction chamber and the second reaction chamber, and the first reaction chamber and the second reaction chamber are communicated through the second conveying pump.
The further improvement of the technical scheme is that the first-stage cyanogen breaking pool, the second-stage cyanogen breaking pool, the first reaction chamber and the second reaction chamber are respectively internally provided with a stirring device, and the stirring devices are connected with a control system.
The technical proposal is further improved by further comprising an activated carbon column which is arranged between the reduction tank and the sedimentation tank.
The further improvement of the technical proposal is that the sedimentation tank is provided with a clarification purifier which is connected with a control system.
The further improvement of the technical proposal is that the top end of the sedimentation tank is provided with an overflow port and the bottom end is provided with a sludge discharge port.
The utility model has the advantages as follows:
the utility model comprises a cyanogen breaking pool, a reduction pool and a sedimentation pool which are connected in sequence through pipelines, and also comprises a control system, a medicament storage tank and a gas storage tank, wherein the cyanogen breaking pool is internally provided with a first-stage cyanogen breaking pool and a second-stage cyanogen breaking pool which are communicated with each other, the first-stage cyanogen breaking pool is communicated with a wastewater tank to be treated, the reduction pool is internally provided with a first reaction chamber and a second reaction chamber which are communicated with each other, the first reaction chamber and the second reaction chamber are respectively provided with an oxidation-reduction potential on-line analyzer, the first-stage cyanogen breaking pool, the second-stage cyanogen breaking pool, the first reaction chamber, the second reaction chamber and the sedimentation pool are respectively provided with a pH on-line monitoring controller, and the pH on-line monitoring controller and the oxidation-reduction potential on-line analyzer are respectively connected with the control system, the utility model has simple structure, reasonable design and compact structure, and can effectively remove hexavalent chromium ions and, the treatment effect is good.
Drawings
Fig. 1 is a schematic structural view of the present invention;
description of reference numerals: 1. the device comprises a cyanogen breaking pool, 11, a first-stage cyanogen breaking pool, 12, a second-stage cyanogen breaking pool, 13, a first partition plate, 2, a reduction pool, 21, a first reaction chamber, 22, a second reaction chamber, 23, a second partition plate, 3, a sedimentation pool, 31, an overflow gap, 32, a sludge discharge gap, 4, a medicament storage tank, 5, a second delivery pump, 6, a stirring device and 7, and a control system.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the treatment apparatus for mixed wastewater from electroplating according to this embodiment includes a cyanogen breaking tank 1, a reduction tank 2 and a sedimentation tank 3, which are sequentially connected through a pipeline, and further includes a control system 7, a chemical storage tank 4 and a gas storage tank, where the control system 7 is respectively connected to the cyanogen breaking tank 1, the reduction tank 2, the sedimentation tank 3, the chemical storage tank 4 and the gas storage tank, the chemical storage tank 4 is provided with a first chemical chamber, a second chemical chamber, a third chemical chamber, a fourth chemical chamber, a fifth chemical chamber and a sixth chemical chamber, the first chemical chamber is used for storing sodium hydroxide, the second chemical chamber is used for storing sulfuric acid, the third chemical chamber is used for storing sodium hypochlorite, the fourth chemical chamber is used for storing sodium metabisulfite, the fifth chemical chamber is used for storing ferrous sulfate, the sixth chemical chamber is used for pH regulator, a first grade cyanogen breaking tank 11 and a second grade cyanogen breaking tank 12 are provided in the cyanogen breaking tank, the first-stage cyanogen breaking pool 11 is communicated with a wastewater tank to be treated, a first reaction chamber 21 and a second reaction chamber 22 which are communicated with each other are arranged in the reduction pool 2, the first reaction chamber 21 is communicated with the second-stage cyanogen breaking pool 12, the second reaction chamber 22 is communicated with the sedimentation pool 3, a gas storage tank and a first reagent chamber are respectively communicated with the first-stage cyanogen breaking pool 11, the second reagent chamber and a third reagent chamber are respectively communicated with the second-stage cyanogen breaking pool 121, a fourth reagent chamber is communicated with the first reaction chamber 21, a fifth reagent chamber is communicated with the second reaction chamber 22, a sixth reagent chamber is respectively communicated with the first reaction chamber, the second reaction chamber and the sedimentation pool 3, the first reaction chamber 21 and the second reaction chamber 22 are respectively provided with an online oxidation-reduction potential analyzer, the first-stage cyanogen breaking pool 11, the second-stage cyanogen breaking pool 12, the first reaction chamber 21, the second reaction chamber 22 and the sedimentation pool 3 are respectively provided with an online pH monitoring controller, the online pH monitoring controller and the online oxidation-reduction potential analyzer are respectively connected with the control system 7, the utility model has the advantages of simple structure, reasonable in design, through the broken cyanogen pond 11 of one-level and the broken cyanogen pond 12 of second grade that set up mutual intercommunication in broken cyanogen pond 1, carry out the oxidation of cyanogen and get rid of, through first reacting chamber 21 and the second reacting chamber 22 that set up mutual intercommunication in the reaction box, and add first reacting chamber 21 with sodium metabisulfite through first medicament room, carry out the reduction reaction to hexavalent chromium in the electroplating effluent, the treatment solution gets into second reacting chamber 22 after that, add ferrous sulfate through second medicament room, further react the back, get into sedimentation tank 3, get rid of chromium through the coprecipitation, the treatment effect is good, in this embodiment, in other words, the integration design has been carried out to the reaction box, also carried out the integration design to the medicament holding vessel, make overall structure more compact, cost and running cost are cheaper.
In some embodiments, the device further comprises a first delivery pump and a second delivery pump 5, the first delivery pump and the second delivery pump 5 are respectively connected with the control system 7, a first partition plate 13 is arranged between the first-stage cyanogen breaking chamber 11 and the second-stage cyanogen breaking chamber 12, the first-stage cyanogen breaking chamber 11 and the second-stage cyanogen breaking chamber 12 are communicated through the first delivery pump, a second partition plate 23 is arranged between the first reaction chamber 21 and the second reaction chamber 22, the first reaction chamber 21 and the second reaction chamber 22 are communicated through the second delivery pump, in this embodiment, the cyanogen breaking tank 1 and the reduction tank 2 are respectively divided into two parts through the partition plate, the cyanogen breaking tank 1 and the reduction tank 2 can be respectively divided into two region control conditions for carrying out reaction without adding more reaction tanks or communicating the two reaction regions through pipelines, which not only saves cost, but also is convenient to operate and manage, the delivery pump of this embodiment is connected with the control system 7, when the oxidation-reduction potential on-line analyzer feeds back the reaction condition of the primary cyanogen breaking tank 11 to the control system 7, according to the preset value of the control system 7, if the reaction is complete, the delivery pump is opened, the waste liquid treated by the primary cyanogen breaking tank 11 is delivered to the secondary cyanogen breaking tank 12 for continuous reaction, wherein it needs to be noted that when the action of the delivery pump is finished, the waste liquid to be treated in the waste water tank is delivered into the primary cyanogen breaking tank 11, the control action is similar to that of the cyanogen breaking tank 1, when the oxidation-reduction potential on-line analyzer feeds back the reaction condition of the first reaction chamber 21 to the control system 7, according to the preset value of the control system 7, if the reaction is complete, the delivery pump is opened, the waste liquid treated by the first reaction chamber 21 is delivered into the second reaction chamber 22 for continuous reaction, wherein it needs to be noted that when the action of the delivery pump is finished, the waste liquid to be treated in the waste water tank is delivered into the first reaction chamber, the control and management are very convenient.
In some specific examples, the first-stage cyanogen breaking pool 11, the second-stage cyanogen breaking pool 12, the first reaction chamber 21 and the second reaction chamber 22 are respectively provided with the stirring device 6, the stirring device 6 is connected with the control system 7, and by arranging the stirring device 6, the stirring device 6 is connected with the control system 7, so that the reagents and the waste liquid in the first-stage cyanogen breaking pool 111, the second-stage cyanogen breaking pool 12, the first reaction chamber 21 and the second reaction chamber 22 can be uniformly mixed, the reaction efficiency is effectively improved, meanwhile, the concentration at each part is more uniform, the reaction is more complete, and specifically, the stirring device 6 in the embodiment can be set as an air stirring device 6 or a spiral stirring device 6, and the like.
In other specific embodiments, still include the activated carbon column, the activated carbon column is located between reduction pond 2 and sedimentation tank 3, and this embodiment is through setting up the activated carbon column, adjusts quality of water yield on the one hand, and on the other hand gets rid of the organic matter impurity in the waste water through the absorption.
In some optional concrete embodiments, the sedimentation tank 3 is provided with a clarification purifier, the clarification purifier is connected with the control system 7, and the clarification purifier is arranged, so that the flocculation efficiency can be effectively improved, the effluent index can be optimized, the process can be simplified, and the equipment reliability can be improved.
In other specific examples, the top end of the sedimentation tank 3 is provided with an overflow port 31, the bottom end of the sedimentation tank is provided with a sludge discharge port 32, the embodiment is provided with the overflow port 31 and the sludge discharge port 32, clear water at the top end flows out from the overflow port, sludge is discharged from the bottom end, and the sedimentation tank is simple in structure and convenient for subsequent sludge recovery treatment.
The utility model discloses a theory of operation does:
the method comprises the following steps of enabling chromium-containing sewage to flow automatically from a trench of a production workshop to enter a primary cyanogen breaking tank 11, fully stirring the chromium-containing sewage in the primary cyanogen breaking tank 11 through a stirring device 6 to achieve the purpose of uniform water quality, adding sodium hydroxide into the primary cyanogen breaking tank 11, adjusting the pH value to be within 10-10.5, monitoring and feeding back the pH value to a control system 7 through an online pH monitoring control instrument, controlling the amount of the added sodium hydroxide through the control system 7, controlling a gas storage tank to introduce chlorine into the primary cyanogen breaking tank 11 through the control system 7 after the pH adjustment is completed, completing primary incomplete oxidation reaction for removing cyanogen under an alkaline condition, conveying waste liquid to a secondary cyanogen breaking tank 12 through a conveying pump, adding sulfuric acid into the secondary cyanogen breaking tank 12, adding sodium hypochlorite into the secondary cyanogen breaking tank 12, monitoring the pH value of the secondary cyanogen breaking tank 12 to be 6-6.5, and performing secondary complete oxidation reaction under the neutral condition, complete removal of cyanogen is completed, then the waste liquid is conveyed to a first reaction chamber 21 through a conveying pump, the waste liquid is fully stirred in the first reaction chamber 21 through a stirring device 6 to achieve the purpose of uniform water quality, at the moment, a pH regulator is added into the first reaction chamber 21 to regulate the pH to be within 2.5-3, the pH regulator is monitored by a pH online monitoring controller and fed back to a control system 7, the amount of the added pH regulator is controlled by the control system 7, after the pH regulation is completed, sodium metabisulfite is added into the first reaction chamber 21 through a medicament storage tank 4 to carry out the oxidation reduction removal of chromium, the dosage of the sodium metabisulfite is controlled by an oxidation reduction potential online analyzer, the initial value of the oxidation reduction potential online analyzer is set to be 300 and fed back to the control system 7, the waste liquid enters a second reaction chamber 22 after the treatment of the first reaction chamber 21 is completed, the control system 7 controls a medicament storage tank to add ferrous sulfate into the second, controlling the dosage of ferrous sulfate by an oxidation-reduction potential on-line analyzer, setting the initial value of the oxidation-reduction potential on-line analyzer to be 300 and feeding the initial value back to a control system 7, after the treatment in a second reaction chamber 22 is finished, further filtering by an activated carbon column to remove residual heavy metals, then feeding the heavy metals into a sedimentation tank 3, controlling the feeding of a pH regulator by the control system 7, monitoring and controlling by the pH on-line monitoring controller, transmitting data to the control system 7 to enable the pH value to be 5-7, further purifying by a clarifying purifier, and allowing clear water to flow out of an overflow port for further recycling, discharging bottom sludge through a sludge discharge port 32, and performing the next recycling treatment.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (6)
1. A treatment device for electroplating mixed wastewater, which is characterized by comprising a cyanogen breaking pool, a reduction pool and a sedimentation pool which are sequentially connected through a pipeline, and further comprising a control system, a medicament storage tank and a gas storage tank, wherein the control system is respectively connected with the cyanogen breaking pool, the reduction pool, the sedimentation pool, the medicament storage tank and the gas storage tank, the medicament storage tank is provided with a first medicament chamber, a second medicament chamber, a third medicament chamber, a fourth medicament chamber, a fifth medicament chamber and a sixth medicament chamber, the first medicament chamber is used for storing sodium hydroxide, the second medicament chamber is used for storing sulfuric acid, the third medicament chamber is used for storing sodium hypochlorite, the fourth medicament chamber is used for storing sodium metabisulfite, the fifth medicament chamber is used for storing ferrous sulfate, the sixth medicament chamber is used for storing a pH regulator, a first-level cyanogen breaking pool and a second-level cyanogen breaking pool which are mutually communicated are arranged in the cyanogen breaking pool, the first-level cyanogen breaking pool is, the reduction tank is internally provided with a first reaction chamber and a second reaction chamber which are mutually communicated, the first reaction chamber is communicated with a second-stage cyanogen breaking tank, the second reaction chamber is communicated with the sedimentation tank, the gas storage tank and the first reagent chamber are respectively communicated with the first-stage cyanogen breaking tank, the second reagent chamber and the third reagent chamber are both communicated with the second-stage cyanogen breaking tank, the fourth reagent chamber is communicated with the first reaction chamber, the fifth reagent chamber is communicated with the second reaction chamber, the sixth reagent chamber is respectively communicated with the first reaction chamber, the second reaction chamber and the sedimentation tank, the first reaction chamber and the second reaction chamber are both provided with an online oxidation-reduction potential analyzer, the first-stage cyanogen breaking tank, the second-stage cyanogen breaking tank, the first reaction chamber, the second reaction chamber and the sedimentation tank are both provided with an online pH monitoring controller, and the online pH monitoring controller and the online oxidation-reduction potential analyzer are respectively connected with the control system.
2. The treatment device for the electroplating mixed wastewater according to claim 1, further comprising a first delivery pump and a second delivery pump, wherein the first delivery pump and the second delivery pump are respectively connected with the control system, a first partition plate is arranged between the primary cyanogen breaking chamber and the secondary cyanogen breaking chamber, the primary cyanogen breaking chamber and the secondary cyanogen breaking chamber are communicated through the first delivery pump, a second partition plate is arranged between the first reaction chamber and the second reaction chamber, and the first reaction chamber and the second reaction chamber are communicated through the second delivery pump.
3. The treatment device for the electroplating mixed wastewater according to claim 1, wherein the primary cyanogen breaking tank, the secondary cyanogen breaking tank, the first reaction chamber and the second reaction chamber are respectively provided with a stirring device, and the stirring devices are connected with a control system.
4. The treatment device for the mixed wastewater generated in the electroplating according to claim 1, further comprising an activated carbon column, wherein the activated carbon column is arranged between the reduction tank and the sedimentation tank.
5. The treatment device for the electroplating mixed wastewater as recited in claim 1, wherein the sedimentation tank is provided with a clarification purifier, and the clarification purifier is connected with the control system.
6. The apparatus for treating waste water from electroplating mixing discharge as claimed in claim 1, wherein the settling tank is provided with an overflow port at the top end and a sludge discharge port at the bottom end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922496094.7U CN211471069U (en) | 2019-12-31 | 2019-12-31 | Treatment device for electroplating mixed wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922496094.7U CN211471069U (en) | 2019-12-31 | 2019-12-31 | Treatment device for electroplating mixed wastewater |
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| CN211471069U true CN211471069U (en) | 2020-09-11 |
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| CN201922496094.7U Active CN211471069U (en) | 2019-12-31 | 2019-12-31 | Treatment device for electroplating mixed wastewater |
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