CN219489795U - Electroplating nickel-containing wastewater treatment integrated equipment - Google Patents
Electroplating nickel-containing wastewater treatment integrated equipment Download PDFInfo
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- CN219489795U CN219489795U CN202320637639.5U CN202320637639U CN219489795U CN 219489795 U CN219489795 U CN 219489795U CN 202320637639 U CN202320637639 U CN 202320637639U CN 219489795 U CN219489795 U CN 219489795U
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Abstract
The utility model discloses electroplating nickel-containing wastewater treatment integrated equipment, which relates to the technical field of wastewater treatment and comprises a cuboid shell, wherein a first treatment unit and a second treatment unit are arranged in the shell; the first treatment unit comprises a PH regulating tank, a vein-breaking dephosphorization tank, a first alkali regulating tank, a first flocculation tank and a first-stage sedimentation tank which are connected in sequence; the second treatment unit comprises a second alkali regulating tank, a nickel removal reaction tank, a precipitation reaction tank, a second flocculation tank, a secondary precipitation tank and an intermediate lifting water tank which are connected in sequence; the first-stage sedimentation tank of the first treatment unit is connected with the second alkali regulating tank of the second treatment unit, and the tanks are connected by adopting a water inlet and a water outlet which are arranged at the lower part and the upper part. The utility model provides an integrated treatment device for nickel-containing wastewater, which aims to intensively treat nickel-containing wastewater, maximize the utilization of occupied area, achieve the effect of simultaneously removing chemical nickel and complex nickel and reach wastewater discharge standards.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, and particularly relates to electroplating nickel-containing wastewater treatment integrated equipment.
Background
Nickel is used as a main mode of metal surface modification, and a large amount of nickel-containing wastewater is generated in the process, wherein, besides free nickel mainly comprising nickel sulfate and nickel chloride, various complexing agents are added as required in the production process to form more stable TA-Ni, CA-Ni, SP-Ni and other acidic complex nickel with Ni2+ in the wastewater, so that the nickel-containing wastewater is difficult to effectively treat, and serious environmental pollution is caused by out-of-standard emission. At present, the common method for treating nickel-containing wastewater is a traditional chemical precipitation method mainly comprising hydroxide and sulfide, is mainly suitable for treating free nickel, but is difficult to effectively remove low-concentration complex Ni, and other methods such as an electrolytic method and a high-grade oxidation-reduction method can ensure that the total nickel of effluent reaches the standard, but generally has higher treatment cost, long reaction time, easy secondary pollution and the like. With the increasing strictness of wastewater discharge standards, there is a need to develop an environment-friendly integrated apparatus for more stable and effective deep Ni removal.
Disclosure of Invention
The utility model aims to provide an integrated electroplating nickel-containing wastewater treatment device, which solves the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the integrated electroplating nickel-containing wastewater treatment equipment comprises a cuboid shell, wherein a first treatment unit and a second treatment unit are arranged in the shell;
the first treatment unit comprises a PH regulating tank, a vein-breaking dephosphorization tank, a first alkali regulating tank, a first flocculation tank and a first-stage sedimentation tank which are connected in sequence;
the second treatment unit comprises a second alkali regulating tank, a nickel removal reaction tank, a precipitation reaction tank, a second flocculation tank, a secondary precipitation tank and an intermediate lifting water tank which are connected in sequence;
the first-stage sedimentation tank of the first treatment unit is connected with the second alkali regulating tank of the second treatment unit, and the tanks are connected by adopting a water inlet and a water outlet which are arranged at the lower part and the upper part.
Further preferably, the device further comprises a sulfuric acid dosing device, a hydrogen peroxide dosing device, a dephosphorization agent dosing device, a sodium hydroxide dosing device, a PAM dosing device, a PAC dosing device and a nickel removal agent dosing device, wherein the sulfuric acid dosing device is connected with the PH regulating tank through a pipeline, the hydrogen peroxide dosing device and the dephosphorization agent dosing device are connected with the vein breaking and phosphorus removal tank through a pipeline, the sodium hydroxide dosing device is connected with the first alkali regulating tank and the second alkali regulating tank through a pipeline, the PAM dosing device is connected with the first flocculation tank and the second flocculation tank through a pipeline, the PAC dosing device is connected with the precipitation reaction tank through a pipeline, and the nickel removal agent dosing device is connected with the nickel removal reaction tank through a pipeline.
Preferably, the middle part is equipped with the middle part and overflows the water hole, and the middle part is equipped with the pipe chute and packs, and the rear end is equipped with the play water weir and is connected with the second alkali equalizing basin, second grade sedimentation tank front end is equipped with the middle part and overflows the water hole, and the middle part is equipped with the pipe chute and packs, and the rear end is equipped with out the water weir and is connected with middle lifting water pond, the one-level sedimentation tank bottom is equipped with two mud hoppers, and the mud hoppers are equipped with manual butterfly valve and pneumatic mud valve, second grade sedimentation tank bottom is equipped with two mud hoppers, and the mud hoppers are equipped with manual butterfly valve and pneumatic mud valve.
Preferably, paddle type agitators are arranged in the vein breaking dephosphorization pool, the first alkali regulating pool, the first flocculation pool, the nickel removal reaction pool and the second flocculation pool, air stirring systems are arranged in the PH regulating pool, the second alkali regulating pool and the precipitation reaction pool, and stirring devices are arranged in the sulfuric acid dosing device, the hydrogen peroxide dosing device, the dephosphorization agent dosing device, the sodium hydroxide dosing device, the PAM dosing device, the PAC dosing device and the nickel removal agent dosing device.
Preferably, PH probes are arranged in the PH regulating tank, the first alkali regulating tank and the second alkali regulating tank, and ORP probes are arranged in the vein-breaking dephosphorization tank.
Preferably, the sulfuric acid dosing device, the hydrogen peroxide dosing device, the dephosphorization agent dosing device, the PAC dosing device and the nickel removal agent dosing device are respectively provided with a dosing metering pump, and the sodium hydroxide dosing device and the PAM dosing device are respectively provided with two dosing metering pumps.
Preferably, the sulfuric acid dosing device, the hydrogen peroxide dosing device, the dephosphorization agent dosing device, the sodium hydroxide dosing device, the PAM dosing device, the PAC dosing device, the nickel removal agent dosing device and the dosing metering pump are all connected with a PLC controller.
The utility model has the following beneficial effects:
1. according to the integrated treatment equipment for the electroplating nickel-containing wastewater, disclosed by the utility model, the OH generated in the Fenton reaction has extremely strong oxidizing capability, so that complexes in water can be effectively destroyed, and nickel ions are released; meanwhile, the nickel-containing wastewater can react with hypophosphite and phosphite to oxidize the nickel-containing wastewater into orthophosphate, so that the effect of simultaneously removing chemical nickel and hypophosphite can be achieved, the wastewater discharge standard is reached, the nickel-containing wastewater is intensively treated, and the occupied area is maximized.
2. The utility model is provided with the medicine dispensing and adding device, thereby avoiding long-distance conveying of the medicine liquid and timely adding the medicine.
3. The utility model combines mechanical stirring and pneumatic stirring, saves stirring equipment, reduces operation productivity and saves cost for early-stage equipment investment and later-stage equipment operation investment under the condition of ensuring that the medicament and the wastewater are fully and uniformly mixed.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a cross-sectional view taken along the direction A-A of the present utility model;
FIG. 3 is a B-B cross-sectional view of the present utility model;
FIG. 4 is a schematic diagram of the connection of the present utility model.
Parts and numbers in the figure:
1-a PH regulating tank; 2-a vein-breaking dephosphorization pool; 3-a first alkali regulating tank; 4-a first flocculation tank; 5-a first-stage sedimentation tank; 6-a second alkali regulating tank; 7-a nickel removal reaction tank; 8-a precipitation reaction tank; 9-a second flocculation tank; 10-a secondary sedimentation tank; 11-an intermediate lifting pond; a 12-sulfuric acid dosing device; 13-a hydrogen peroxide dosing device; 14-dephosphorization agent adding device; 15-sodium hydroxide dosing device; 16-PAM dosing device; 17-PAC dosing apparatus; 18-a nickel remover dosing device.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described with reference to the drawings in the embodiments of the present utility model, and although the present utility model has been described with reference to the preferred embodiments, various modifications may be made thereto and equivalents may be substituted for elements thereof without departing from the scope of the present utility model, and in particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Referring to fig. 1-4, an integrated electroplating nickel-containing wastewater treatment device comprises a cuboid shell, wherein a first treatment unit and a second treatment unit are arranged in the shell;
the first treatment unit comprises a PH regulating tank 1, a vein-breaking dephosphorization tank 2, a first alkali regulating tank 3, a first flocculation tank 4 and a first-stage sedimentation tank 5 which are connected in sequence;
the second treatment unit comprises a second alkali regulating tank 6, a nickel removal reaction tank 7, a precipitation reaction tank 8, a second flocculation tank 9, a secondary precipitation tank 10 and an intermediate lifting water tank 11 which are connected in sequence;
the first-stage sedimentation tank 5 of the first treatment unit is connected with the second alkali regulating tank 6 of the second treatment unit, and the tanks are connected by adopting a water inlet and a water outlet which are lower in and upper out.
Further preferably, as shown in fig. 4, the device further comprises a sulfuric acid dosing device 12, a hydrogen peroxide dosing device 13, a dephosphorization agent dosing device 14, a sodium hydroxide dosing device 15, a PAM dosing device 16, a PAC dosing device 17 and a nickel removal agent dosing device 18, wherein the sulfuric acid dosing device 12 is connected with the PH adjusting tank 1 through a pipeline, the hydrogen peroxide dosing device 13 and the dephosphorization agent dosing device 14 are connected with the vein-breaking dephosphorization tank 2 through pipelines, the sodium hydroxide dosing device 15 is connected with the first alkali adjusting tank 3 and the second alkali adjusting tank 6 through pipelines, the PAM dosing device 16 is connected with the first flocculation tank 4 and the second flocculation tank 9 through pipelines, the PAC dosing device 17 is connected with the precipitation reaction tank 8 through a pipeline, and the nickel removal agent dosing device 18 is connected with the nickel removal reaction tank 7 through a pipeline.
Preferably, the front end of the primary sedimentation tank 5 is provided with a middle water passing hole, the middle part is provided with inclined tube filler, the rear end is provided with a water outlet weir and connected with the second alkali regulating tank 6, the front end of the secondary sedimentation tank 10 is provided with a middle water passing hole, the middle part is provided with inclined tube filler, the rear end is provided with a water outlet weir and connected with the middle lifting pond 11, the bottom of the primary sedimentation tank 5 is provided with two mud hoppers, each mud hopper is provided with a manual butterfly valve and a pneumatic mud valve, the bottom of the secondary sedimentation tank 10 is provided with two mud hoppers, and each mud hopper is provided with a manual butterfly valve and a pneumatic mud valve.
Preferably, paddle type agitators are arranged in the vein-breaking dephosphorization pool 2, the first alkali regulating pool 3, the first flocculation pool 4, the nickel-removing reaction pool 7 and the second flocculation pool 9, air agitating systems are arranged in the PH regulating pool 1, the second alkali regulating pool 6 and the precipitation reaction pool 8, and agitating devices are arranged in the sulfuric acid dosing device 12, the hydrogen peroxide dosing device 13, the dephosphorization agent dosing device 14, the sodium hydroxide dosing device 15, the PAM dosing device 16, the PAC dosing device 17 and the nickel-removing agent dosing device 18.
Preferably, PH probes are arranged in the PH regulating tank 1, the first alkali regulating tank 3 and the second alkali regulating tank 6, and ORP probes are arranged in the vein-breaking dephosphorization tank 2.
Preferably, the sulfuric acid dosing device 12, the hydrogen peroxide dosing device 13, the dephosphorization agent dosing device 14, the PAC dosing device 17 and the nickel removal agent dosing device 18 are respectively provided with a dosing metering pump, and the sodium hydroxide dosing device 15 and the PAM dosing device 16 are respectively provided with two dosing metering pumps.
Preferably, the sulfuric acid dosing device 12, the hydrogen peroxide dosing device 13, the dephosphorization agent dosing device 14, the sodium hydroxide dosing device 15, the PAM dosing device 16, the PAC dosing device 17, the nickel removal agent dosing device 18 and the dosing metering pump are all connected with a PLC controller.
Nickel-containing wastewater enters a water inlet of the nickel-containing wastewater treatment integrated equipment through lifting by a pump, and sequentially enters a PH regulating tank 1, a vein-breaking dephosphorization tank 2, a first alkali regulating tank 3, a first flocculation tank 4, a first-stage sedimentation tank 5, a first alkali regulating tank 6, a nickel-removing reaction tank 7, a sedimentation reaction tank 8, a second flocculation tank 9, a second-stage sedimentation tank 10 and an intermediate lifting tank 11, wherein acidification reaction, reduction reaction and flocculation reaction are carried out, medicaments required by each reaction are respectively provided with a corresponding sulfuric acid dosing device 12, a hydrogen peroxide dosing device 13, a dephosphorization agent dosing device 14, a sodium hydroxide dosing device 15, a PAM dosing device 16, a PAC dosing device 17 and a metering pump on a nickel-removal agent dosing device 18, sulfuric acid is added into the PH regulating tank 1, a vein-breaking dephosphorization tank 2, a dephosphorization agent and hydrogen peroxide are added into the first alkali regulating tank 3, sodium hydroxide is added into the first flocculation tank 4, a mixed solution after flocculation reaction enters the first-stage sedimentation tank 5, supernatant overflows into the second alkali regulating tank 6, the second alkali regulating tank 6 is added into the PAM is added into the second flocculation tank 6, the mixed solution after the PAM is added into the intermediate lifting tank 7, the mixed solution after the pH is discharged into the intermediate lifting tank is subjected to the mixed solution after the pH-stage 7 reaches the flocculation reaction, and the mixed solution reaches the pH value of the pH value is discharged, and the mixed solution reaches the pH value of the pH solution is discharged after the mixed solution is discharged, and reaches the pH solution is discharged by the pH tank 7. The sludge is deposited at the bottom of the sedimentation tank and discharged to a separately configured sludge collecting tank and a sludge dewatering machine for treatment through sludge discharge ports at the bottoms of the primary sedimentation tank 5 and the secondary sedimentation tank 10.
The utility model relates to an integrated treatment device for electroplating nickel-containing wastewater, which adopts an inner lining PP (polypropylene) anti-corrosion material as a main body of the device and is wrapped by outer lining carbon steel. Not only can avoid the corrosion of equipment by nickel-containing wastewater, but also can prevent the deformation of PP materials through the reinforcement of outer lining carbon steel.
The process flow comprises the following steps: nickel-containing wastewater, regulating pH to 2-3, adding Fenton reagent for reaction, regulating ORP to 580-600, regulating pH to 10-11, adding PAC for flocculation reaction, separating solid and liquid in a first-stage sedimentation tank 5, regulating pH to 7-9, adding a nickel removing agent for continuously removing nickel ions, adding PAC for flocculation reaction, adding PAM for coagulation, separating solid and liquid in a second-stage sedimentation tank 10, lifting a water tank 11 in the middle, and obtaining nickel pollutants in water to reach the standard of Table 3 in the discharge Standard of electroplating pollutants (GB 21900-2008).
In summary, the utility model provides the integrated treatment equipment for the nickel-containing wastewater, and aims to intensively treat the nickel-containing wastewater, maximize the utilization of the occupied area, achieve the effect of simultaneously removing chemical nickel and complex nickel and reach the wastewater discharge standard.
Thus far, the technical solution of the present utility model has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present utility model is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and substitutions will fall within the scope of the present utility model.
Claims (7)
1. The integrated electroplating nickel-containing wastewater treatment equipment comprises a cuboid shell and is characterized in that a first treatment unit and a second treatment unit are arranged in the shell;
the first treatment unit comprises a PH regulating tank (1), a vein-breaking dephosphorization tank (2), a first alkali regulating tank (3), a first flocculation tank (4) and a first-stage sedimentation tank (5) which are connected in sequence;
the second treatment unit comprises a second alkali regulating tank (6), a nickel removal reaction tank (7), a precipitation reaction tank (8), a second flocculation tank (9), a secondary precipitation tank (10) and an intermediate lifting water tank (11) which are connected in sequence;
the first-stage sedimentation tank (5) of the first treatment unit is connected with the second alkali regulating tank (6) of the second treatment unit, and the tanks are connected by adopting a water inlet and a water outlet which are arranged at the lower part and the upper part.
2. The integrated electroplating nickel-containing wastewater treatment equipment according to claim 1, further comprising a sulfuric acid dosing device (12), a hydrogen peroxide dosing device (13), a dephosphorization agent dosing device (14), a sodium hydroxide dosing device (15), a PAM dosing device (16), a PAC dosing device (17) and a nickel removal agent dosing device (18), wherein the sulfuric acid dosing device (12) is connected with the PH regulating tank (1) through a pipeline, the hydrogen peroxide dosing device (13) and the dephosphorization agent dosing device (14) are connected with the vein-breaking phosphorus removal tank (2) through a pipeline, the sodium hydroxide dosing device (15) is connected with the first alkali regulating tank (3) and the second alkali regulating tank (6) through a pipeline, the PAM dosing device (16) is connected with the first flocculation tank (4) and the second flocculation tank (9) through a pipeline, the PAC dosing device (17) is connected with the precipitation reaction tank (8) through a pipeline, and the nickel removal agent dosing device (18) is connected with the nickel removal reaction tank (7) through a pipeline.
3. The electroplating nickel-containing wastewater treatment integrated equipment according to claim 2, wherein the front end of the primary sedimentation tank (5) is provided with a middle water passing hole, the middle part is provided with inclined tube filler, the rear end is provided with a water outlet weir and connected with the second alkali regulating tank (6), the front end of the secondary sedimentation tank (10) is provided with a middle water passing hole, the middle part is provided with inclined tube filler, the rear end is provided with a water outlet weir and connected with the middle lifting pond (11), the bottom of the primary sedimentation tank (5) is provided with two mud hoppers, each mud hopper is provided with a manual butterfly valve and a pneumatic mud valve, and the bottom of the secondary sedimentation tank (10) is provided with two mud hoppers, each mud hopper is provided with a manual butterfly valve and a pneumatic mud valve.
4. The integrated electroplating nickel-containing wastewater treatment equipment according to claim 2 or 3, wherein paddle type agitators are arranged in the vein-breaking dephosphorization pool (2), the first alkali regulating pool (3), the first flocculation pool (4), the nickel-removing reaction pool (7) and the second flocculation pool (9), air agitating systems are arranged in the PH regulating pool (1), the second alkali regulating pool (6) and the precipitation reaction pool (8), and agitating devices are arranged in the sulfuric acid dosing device (12), the hydrogen peroxide dosing device (13), the dephosphorization agent dosing device (14), the sodium hydroxide dosing device (15), the PAM dosing device (16), the PAC dosing device (17) and the nickel-removing agent dosing device (18).
5. The integrated electroplating nickel-containing wastewater treatment device according to claim 2 or 3, wherein the PH regulating tank (1), the first alkali regulating tank (3) and the second alkali regulating tank (6) are respectively provided with a PH probe, and the vein-breaking and phosphorus-removing tank (2) is internally provided with an ORP probe.
6. An integrated electroplating nickel-containing wastewater treatment device according to claim 2 or 3, wherein the sulfuric acid dosing device (12), the hydrogen peroxide dosing device (13), the dephosphorization agent dosing device (14), the PAC dosing device (17) and the nickel removal agent dosing device (18) are respectively provided with one dosing metering pump, and the sodium hydroxide dosing device (15) and the PAM dosing device (16) are respectively provided with two dosing metering pumps.
7. The integrated electroplating nickel-containing wastewater treatment device according to claim 6, wherein the sulfuric acid dosing device (12), the hydrogen peroxide dosing device (13), the dephosphorization agent dosing device (14), the sodium hydroxide dosing device (15), the PAM dosing device (16), the PAC dosing device (17), the nickel removal agent dosing device (18) and the dosing metering pump are all connected with a PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320637639.5U CN219489795U (en) | 2023-03-28 | 2023-03-28 | Electroplating nickel-containing wastewater treatment integrated equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320637639.5U CN219489795U (en) | 2023-03-28 | 2023-03-28 | Electroplating nickel-containing wastewater treatment integrated equipment |
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| Publication Number | Publication Date |
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| CN219489795U true CN219489795U (en) | 2023-08-08 |
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|---|---|---|---|
| CN202320637639.5U Active CN219489795U (en) | 2023-03-28 | 2023-03-28 | Electroplating nickel-containing wastewater treatment integrated equipment |
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| CN (1) | CN219489795U (en) |
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- 2023-03-28 CN CN202320637639.5U patent/CN219489795U/en active Active
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