CN115490399A - Electroplating wastewater treatment process and equipment thereof - Google Patents
Electroplating wastewater treatment process and equipment thereof Download PDFInfo
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- CN115490399A CN115490399A CN202211222527.XA CN202211222527A CN115490399A CN 115490399 A CN115490399 A CN 115490399A CN 202211222527 A CN202211222527 A CN 202211222527A CN 115490399 A CN115490399 A CN 115490399A
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- 238000009713 electroplating Methods 0.000 title claims abstract description 68
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000002351 wastewater Substances 0.000 claims abstract description 99
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000012535 impurity Substances 0.000 claims abstract description 22
- 239000000126 substance Substances 0.000 claims abstract description 21
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 12
- 150000002739 metals Chemical class 0.000 claims abstract description 12
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 53
- 239000010802 sludge Substances 0.000 claims description 29
- 238000011084 recovery Methods 0.000 claims description 24
- 238000004062 sedimentation Methods 0.000 claims description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 20
- 238000005189 flocculation Methods 0.000 claims description 19
- 230000016615 flocculation Effects 0.000 claims description 19
- 238000001914 filtration Methods 0.000 claims description 18
- 241000894006 Bacteria Species 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 12
- 239000012528 membrane Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 229920000742 Cotton Polymers 0.000 claims description 9
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 8
- 230000001546 nitrifying effect Effects 0.000 claims description 8
- 230000001590 oxidative effect Effects 0.000 claims description 8
- 229910021645 metal ion Inorganic materials 0.000 claims description 7
- 230000003749 cleanliness Effects 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 238000006722 reduction reaction Methods 0.000 claims description 6
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 5
- 239000011790 ferrous sulphate Substances 0.000 claims description 5
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 5
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 5
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims description 4
- 241001453382 Nitrosomonadales Species 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 claims description 4
- 239000003054 catalyst Substances 0.000 claims description 4
- 229910001385 heavy metal Inorganic materials 0.000 claims description 4
- 239000007800 oxidant agent Substances 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 238000004064 recycling Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 description 5
- 238000001556 precipitation Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001640 fractional crystallisation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 159000000009 barium salts Chemical class 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 150000001768 cations Chemical group 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 229910001447 ferric ion Inorganic materials 0.000 description 1
- 229910001448 ferrous ion Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000006259 organic additive Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 150000005838 radical anions Chemical group 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses an electroplating wastewater treatment process and equipment, belonging to the technical field of electroplating wastewater treatment, and particularly relating to an electroplating wastewater treatment process and equipment, wherein the electroplating wastewater treatment process comprises a treatment device, a filter device and a driving device, the treatment device is placed on the ground and can purify the electroplating wastewater, the filter device is arranged on the front side of the left end of the surface of the treatment device and can filter impurities of the electroplating wastewater, the driving device is arranged at two internal ends of the treatment device, the placing device is connected with the outer wall of an output shaft of the driving device through threads at the bottom end of the placing device and can be driven by the driving device, and the invention can purify harmful substances in the treatment device into ammonia gas and nitrogen gas to be discharged, can recover useful metals and can achieve the effect of recycling.
Description
Technical Field
The invention relates to the technical field of electroplating wastewater treatment, in particular to an electroplating wastewater treatment process and equipment thereof.
Background
The treatment of waste water or liquid from electroplating production, the waste water and liquid from electroplating plant contains a lot of metal ions such as: chromium, nickel, cyanogen, acid and alkali, generally contain organic additives, metal ions exist in a simple cation form, acid radical anion form and complex ions, a neutralization precipitation method, a neutralization coagulation precipitation method, an oxidation method, a reduction method, a barium salt method, a ferrite method and other chemical methods are commonly used for treating electroplating wastewater, the chemical methods are simple in equipment, less in investment and wider in application, but sludge is usually left to be further treated.
The existing electroplating wastewater contains a large amount of harmful substances, if the existing electroplating wastewater is directly treated by the existing precipitation method and the chemical method, the harmful substances cannot be thoroughly removed, a large amount of sludge can be precipitated, the cleaning cannot be carried out, and the chemical method can synthesize and precipitate metal elements in the electroplating wastewater, so that useful metal elements cannot be recovered.
Disclosure of Invention
The present invention has been made in view of the above and/or other problems occurring in the prior art electroplating wastewater treatment process and apparatus therefor.
Accordingly, an object of the present invention is to provide an electroplating wastewater treatment process and apparatus thereof, which can solve the above-mentioned problems of the prior art by filtering wastewater with a filtering device, treating the wastewater with a treating device, and electrolyzing wastewater sediments with a recovery device to recover metals.
In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:
an electroplating wastewater treatment apparatus, comprising:
a treatment device which is placed on the ground and can purify the electroplating wastewater;
the filtering device is arranged on the front side of the left end of the surface of the treatment device and can filter impurities of the electroplating wastewater;
driving devices arranged at two ends of the inside of the processing device;
the bottom end of the placing device is in threaded connection with the outer wall of the output shaft of the driving device and can be driven by the driving device;
the stirring devices are arranged at two ends of the surface of the placing device and can stir the wastewater purified in the treatment device;
and the recovery device is arranged at the rear side of the left end of the surface of the processing device.
As a preferable mode of the electroplating wastewater treatment equipment of the invention, wherein: the processing device comprises:
a treatment tank placed on the ground;
the placing grooves are formed in the front end and the rear end of the surface of the treatment tank;
the sedimentation tank is arranged at the front end of the left side in the treatment tank;
a flocculation tank arranged at the rear end of the sedimentation tank;
the anoxic tank is arranged at the right end of the flocculation tank;
the anaerobic tank is arranged at the right end of the anoxic tank;
and the good nitrogen tank is arranged at the right end of the anaerobic tank.
As a preferable mode of the electroplating wastewater treatment equipment of the invention, wherein: the filtering device includes:
the filter cylinder is arranged on the front side of the left end of the surface of the treatment tank and can filter impurities of the electroplating wastewater;
a water outlet which is arranged at the lower side of the front end of the outer wall of the filter cylinder and can discharge the filtered water;
and the input end of the drainage pump is connected with the water outlet, and the output end of the drainage pump is led into the interior of the sedimentation tank through a pipeline.
As a preferable mode of the electroplating wastewater treatment apparatus of the invention, wherein: the filtering device includes:
the activated carbon is placed at the bottom end of the interior of the filter cylinder and can adsorb impurities in the electroplating wastewater;
a filter cap placed on top of the filter cartridge;
the hydraulic cylinder is arranged in the center of the top of the filter cover;
the middle of the top of the limiting disc is connected with the output end of the hydraulic cylinder and can be driven by the hydraulic cylinder to lift;
the filter pulp, it is installed in the inside of spacing dish, and can press the filtration to electroplating effluent.
As a preferable mode of the electroplating wastewater treatment equipment of the invention, wherein: the driving device includes:
the driving motor is arranged on the front side of the right end of the outer wall of the treatment tank;
the screw rod, its rotation is connected in the inside of standing groove to set up to two sets of, and the right-hand member of front end screw rod is connected with driving motor's output, carries out the transmission through the belt between two sets of screw rods.
As a preferable mode of the electroplating wastewater treatment apparatus of the invention, wherein: the placement device includes:
the two ends of the top of the placing plate are provided with stirring devices;
the stand, it sets up around the bottom of placing the board, and the outer wall of the inside threaded connection screw rod of lower extreme.
As a preferable mode of the electroplating wastewater treatment equipment of the invention, wherein: the stirring device includes:
the bottom of the hydraulic rod is arranged around the surface of the placing plate, and the top of the hydraulic rod is arranged around the top of the top plate and can lift the top plate;
the stirring motor is arranged in the center of the surface of the top plate, and an output shaft penetrates through the placing plate and is connected to the top of the stirring rod;
and the stirring rod is placed inside the treatment tank and can stir the treated wastewater.
As a preferable mode of the electroplating wastewater treatment equipment of the invention, wherein: the recovery device includes:
the recycling cylinder is arranged on the rear side of the left end of the surface of the treatment tank and can be used for placing the treated sludge;
and the recovery cover is placed at the top of the recovery cylinder.
As a preferable mode of the electroplating wastewater treatment apparatus of the invention, wherein: the recovery device comprises:
the mud stirring motor is arranged in the center of the surface of the recovery cover;
the top of the rotating plate is connected with the output end of the mud stirring motor;
the mud stirring rod is arranged on the periphery of the bottom of the rotating plate and can stir the internal mud;
the electrode rods are arranged at two ends of the bottom of the rotating plate;
and the power supply box is arranged on the surface of the rotating plate and is electrically connected with the two groups of electrode rods.
An electroplating wastewater treatment process comprises the following operation steps:
s1: pouring electroplating wastewater into the filter cylinder, adsorbing particle impurities and part of harmful substances by using the activated carbon at the bottom end of the interior, starting the hydraulic cylinder to drive the filter cotton to press down, extruding the wastewater, and further pressing and filtering impurities in the wastewater to ensure the cleanliness of the wastewater;
s2: introducing the filtered wastewater into the interior of a sedimentation tank by starting a drainage pump, adjusting the pH value of the electroplating wastewater by adding ferrous sulfate and hydrogen peroxide into the interior of the sedimentation tank to enable sludge to settle, and adding an oxidant and a catalyst into the interior to remove COD (chemical oxygen demand) in the wastewater;
s3: discharging the wastewater settled in the settling tank in a physicochemical manner, capturing heavy metal zinc, and adding PAC and PAM for flocculation in the flocculation tank to flocculate the wastewater;
s4: the wastewater in the flocculation tank is discharged into the anoxic tank in a materialized way, nitrate nitrogen in the wastewater can be converted into nitrogen to be discharged through nitrifying bacteria in the anoxic tank, and then the wastewater in the anoxic tank is discharged into the anaerobic tank;
s5: harmful substances in the wastewater are adsorbed and purified by an MBR (membrane biological reactor) membrane in the anaerobic tank, and then the wastewater in the anaerobic tank is discharged into the interior of the aerobic tank;
s6: purifying the wastewater by a biological membrane hanging method through ammonia oxidizing bacteria, nitrite oxidizing bacteria and nitrifying bacteria in the nitrogen tank, and finally purifying harmful substances in the wastewater into ammonia gas and nitrogen gas to be discharged to obtain wastewater capable of being discharged;
s7: and then the settled sludge and the biomembrane are placed in the recovery cylinder, a sludge stirring motor and a power supply box are started to stir and electrolyze the sludge and the biomembrane, so that the internal metal ions are subjected to oxidation and reduction reactions to be precipitated, and then various valuable metals are respectively extracted by concentrating and crystallizing the sludge step by step, so that the valuable metals are recovered.
Compared with the prior art:
the electroplating wastewater can be purified by the treatment device, and the electroplating wastewater is purified to generate sludge sediment and generate nitrogen for discharge, so that the wastewater can reach the discharge standard;
the filtering device can filter impurities of the electroplating wastewater, prevent the impurities from entering the treatment tank along with the wastewater to influence purification, and can increase the cleanliness of filtering in a filter pressing mode so that the impurities are adsorbed between the active carbon and the filter cotton;
the driving device can drive the placing device to move, so that the stirring device at the upper end of the placing device can stir each treatment pool, thereby increasing the reaction rate and reducing the construction cost;
the settled sludge and the biomembrane can be placed through the recovery device, and the sludge is stirred and electrolyzed to ensure that the internal metal ions are subjected to oxidation and reduction reactions, so that the sludge is precipitated, and various valuable metals are respectively extracted through the concentration and fractional crystallization of the sludge, so that the effect of recovering and utilizing the sludge is achieved.
Drawings
FIG. 1 is a schematic view of the overall structure provided by the present invention;
FIG. 2 is a schematic view of the overall left-view structure provided by the present invention;
FIG. 3 is a schematic diagram of an overall right-view structure provided by the present invention;
FIG. 4 is a schematic structural diagram of a processing apparatus according to the present invention;
FIG. 5 is a schematic view of a filter device according to the present invention;
FIG. 6 is a schematic view of the internal structure of the filtering apparatus according to the present invention;
FIG. 7 is a schematic structural view of a recycling apparatus according to the present invention;
fig. 8 is a left side view structural diagram of the recycling device provided by the present invention.
In the figure: the device comprises a treatment device 1, a treatment tank 11, a placing tank 12, a sedimentation tank 13, a flocculation tank 14, an anoxic tank 15, an anaerobic tank 16, a good nitrogen tank 17, a filtering device 2, a filter cylinder 21, a water outlet 22, a drainage pump 23, activated carbon 24, a filter cover 25, a hydraulic cylinder 26, a limiting disc 27, filter cotton 28, a driving device 3, a driving motor 31, a screw 32, a placing device 4, a placing plate 41, a stand column 42, a stirring device 5, a hydraulic rod 51, a top plate 52, a stirring motor 53, a stirring rod 54, a recovery device 6, a recovery cylinder 61, a recovery cover 62, a mud stirring motor 63, a rotating plate 64, a mud stirring rod 65, an electrode rod 66 and a power supply box 67.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The invention provides an electroplating wastewater treatment process and equipment thereof, which have the advantages that harmful substances in the electroplating wastewater can be purified into ammonia gas and nitrogen gas to be discharged, wastewater with indexes capable of being discharged is obtained, useful metals can be recycled, and the recycling effect is achieved, please refer to fig. 1-8, and the electroplating wastewater treatment process comprises a treatment device 1, a filtering device 2, a driving device 3, a placing device 4, a stirring device 5 and a recycling device 6;
processing apparatus 1, it is placed on ground, can purify electroplating effluent through processing apparatus 1, purifies electroplating effluent, generates the sludge deposit, and generates the nitrogen gas emission, but waste water reaches emission standard, and processing apparatus 1 includes: a treatment tank 11, a placing groove 12, a sedimentation tank 13, a flocculation tank 14, an anoxic tank 15, an anaerobic tank 16 and a good nitrogen tank 17, wherein the treatment tank 11 is placed on the ground, the placing groove 12 is arranged at the front end and the rear end of the surface of the treatment tank 11 and can place a driving device 3, the sedimentation tank 13 is arranged at the front end of the left side in the treatment tank 11 and is used for adjusting the pH value of electroplating wastewater by adding ferrous sulfate and hydrogen peroxide in the sedimentation tank 13 to settle sludge and adding an oxidant and a catalyst to the inside to remove COD in the wastewater, ferrous ions in the ferrous sulfate can be oxidized into ferric ions, fe & lt 3+ & gt has the coagulation function to remove partial organic matters, the flocculation tank 14 is arranged at the rear end of the sedimentation tank 13 and is used for capturing heavy metal zinc by discharging the wastewater settled in the sedimentation tank 13 in a physicochemical mode, adding PAC and PAM for flocculation in the flocculation tank 14 to flocculate the wastewater, arranging an anoxic tank 15 at the right end of the flocculation tank 14, discharging the wastewater in the flocculation tank 14 into the anoxic tank 15 through materialization, converting nitrate nitrogen in the wastewater into nitrogen through nitrifying bacteria in the anoxic tank 15 for discharge, arranging an anaerobic tank 16 at the right end of the anoxic tank 15, discharging the wastewater in the anoxic tank 15 into the anaerobic tank 16, adsorbing and purifying harmful substances in the wastewater through an MBR (membrane bioreactor) membrane in the anaerobic tank 16, arranging an aerobic tank 17 at the right end of the anaerobic tank 16, discharging the wastewater in the anaerobic tank 16 into an aerobic tank 17, purifying the wastewater through a biological membrane hanging method by using ammonia oxidizing bacteria, nitrite oxidizing bacteria and nitrifying bacteria in the aerobic tank 17, and finally purifying the harmful substances in the aerobic tank into ammonia gas and nitrogen gas for discharge;
filter equipment 2, its setting is in processing apparatus 1's surperficial left end front side, and filter equipment 2 can carry out impurity filtering to electroplating effluent, prevents that impurity from getting into treatment tank 11 along with waste water in, causes the influence to purifying, and through the mode of filter-pressing, can increase filterable cleanliness factor, makes impurity absorption between active carbon 24 and filter pulp 28, and filter equipment 2 includes: a filter cartridge 21, a water outlet 22, a drainage pump 23, an activated carbon 24, a filter cover 25, a hydraulic cylinder 26, a limiting disc 27 and filter cotton 28, wherein the filter cartridge 21 is arranged on the front side of the left end of the surface of the treatment tank 11 and can filter impurities in electroplating wastewater, the water outlet 22 is arranged on the lower side of the front end of the outer wall of the filter cartridge 21 and can discharge the filtered water, the input end of the drainage pump 23 is connected with the water outlet 22, the output end of the drainage pump is led into the sedimentation tank 13 through a pipeline, the activated carbon 24 is arranged at the bottom end of the interior of the filter cartridge 21 and can adsorb the impurities in the electroplating wastewater, the filter cover 25 is arranged at the top of the filter cartridge 21, the hydraulic cylinder 26 is arranged at the center of the top of the filter cover 25, the limiting disc 27 is connected with the output end of the hydraulic cylinder 26 in the middle of the top and can be driven by the hydraulic cylinder 26 to lift, and the filter cotton 28 is arranged in the interior of the limiting disc 27 and can press and filter the electroplating wastewater, so that the impurities are adsorbed between the activated carbon 24 and the filter cotton 28, thereby increasing the cleanliness of the filtration;
drive arrangement 3, its setting can drive placer 4 through drive arrangement 3 and remove at the inside both ends of processing apparatus 1, makes the agitating unit 5 of placer 4 upper end can stir each processing pond 11 to increase reaction rate, and reduce construction cost, drive arrangement 3 includes: the screw 32 is rotatably connected inside the placing groove 12 and is provided with two groups, the right end of the front end screw 32 is connected with the output end of the driving motor 31, the two groups of screws 32 are driven by a belt, and the driving motor 31 drives the two groups of screws 32 to rotate, so that the placing device 4 which is in threaded connection with the outer wall can be driven to move, and the next group of treatment tank 11 is stirred;
agitating unit 5, its setting can stir the waste water of 1 inside purification treatment of processing apparatus through agitating unit 5 at placer 4's surperficial both ends to increase reaction rate, increase the work efficiency of handling, agitating unit 5 includes: the device comprises a hydraulic rod 51, a top plate 52, a stirring motor 53 and a stirring rod 54, wherein the bottom of the hydraulic rod 51 is arranged on the periphery of the surface of the placing plate 41, the top of the hydraulic rod is arranged on the periphery of the top plate 52, and the top plate 52 can be lifted, so that the stirring rod 54 can be conveniently moved into the next group of treatment tanks 11 to rotate;
recovery unit 6, its setting can place the mud and the biomembrane that subside at processing apparatus 1's surface left end rear side through recovery unit 6 to stir the electrolysis to mud, make inside metal ion carry out oxidation and reduction reaction, thereby deposit, the rethread is concentrated, fractional crystallization to mud, draws various valuable metals respectively, thereby reaches the effect of retrieving in the utilization, and recovery unit 6 includes: the recycling bin 61, the recycling cover 62, the mud stirring motor 63, the rotating plate 64, the mud stirring rod 65, the electrode rod 66 and the power supply box 67, the recycling bin 61 is arranged on the rear side of the left end of the surface of the treatment pool 11 and can be used for placing the treated mud, the recycling cover 62 is arranged at the top of the recycling bin 61 and is used for stirring the mud motor 63 which is arranged at the center of the surface of the recycling cover 62, the rotating plate 64 is connected with the top of the recycling cover and is connected with the output end of the mud stirring motor 63, the mud stirring rod 65 is arranged around the bottom of the rotating plate 64 and can stir the internal mud, the mud stirring motor 63 is started to drive the mud stirring rod 65 to stir the mud and simultaneously electrolyze the mud through the electrode rod 66, so that various valuable metals can be conveniently recycled, the electrode rods 66 are arranged at two ends of the bottom of the rotating plate 64, and the power supply box 67 is arranged on the surface of the rotating plate 64 and is electrically connected with the two sets of electrode rods 66.
When the device is used specifically, a person skilled in the art pours electroplating wastewater into the interior of the filter cylinder 21, adsorbs particle impurities and part of harmful substances through the activated carbon 24 at the bottom end of the interior, starts the hydraulic cylinder 26 to enable the hydraulic cylinder 26 to drive the filter cotton 28 to press down, extrudes the wastewater, further presses and filters impurities in the wastewater to ensure the cleanliness of the wastewater, guides the filtered wastewater into the interior of the sedimentation tank 13 by starting the drainage pump 23, adjusts the pH value of the electroplating wastewater by adding ferrous sulfate and hydrogen peroxide into the interior of the sedimentation tank 13 to enable sludge to settle, puts an oxidant and a catalyst into the interior to remove COD in the wastewater, discharges the settled wastewater in the sedimentation tank 13 by materialization, captures heavy metal zinc, adds PAC and PAM into the interior of the flocculation tank 14 to flocculate the wastewater, the wastewater in the flocculation tank 14 is discharged into the anoxic tank 15 by materialization, nitrate nitrogen in the wastewater can be converted into nitrogen to be discharged by nitrifying bacteria in the anoxic tank 15, the wastewater in the anoxic tank 15 is discharged into the anaerobic tank 16, harmful substances in the wastewater are adsorbed and purified by an MBR (membrane bioreactor) film in the anaerobic tank 16, the wastewater in the anaerobic tank 16 is discharged into the aerobic tank 17, the wastewater is purified by a biological membrane hanging method through ammonia oxidizing bacteria, nitrite oxidizing bacteria and nitrifying bacteria in the aerobic tank 17, the harmful substances in the wastewater are purified into ammonia gas and nitrogen to be discharged finally, wastewater with discharge indexes is obtained, settled sludge and biomembrane are placed into the recovery cylinder 61, the sludge stirring motor 63 and the power supply box 67 are started, the sludge and the biomembrane are stirred and electrolyzed, so that internal metal ions are subjected to oxidation and reduction reactions, and precipitation are carried out, and then various valuable metals are respectively extracted by concentrating and crystallizing the sludge step by step, so that the valuable metals are recovered, and the effect of recovering and reusing is achieved.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the disclosed embodiments of the invention may be used in any combination, provided that no structural conflict exists, and the combinations are not exhaustively described in this specification merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. An electroplating wastewater treatment equipment is characterized in that: the method comprises the following steps:
a treatment device (1) which is placed on the ground and can purify the electroplating wastewater;
a filtering device (2) which is arranged at the front side of the left end of the surface of the treatment device (1) and can filter impurities of the electroplating wastewater;
driving devices (3) which are arranged at two ends inside the processing device (1);
the bottom end of the placing device (4) is in threaded connection with the outer wall of the output shaft of the driving device (3) and can be driven by the driving device (3);
stirring devices (5) which are arranged at two ends of the surface of the placing device (4) and can stir the wastewater purified in the treatment device (1);
and a recovery device (6) arranged on the rear side of the left end of the surface of the processing device (1).
2. An electroplating wastewater treatment apparatus according to claim 1, characterized in that the treatment device (1) comprises:
a treatment tank (11) placed on the ground;
the placing grooves (12) are arranged at the front end and the rear end of the surface of the treatment tank (11);
a sedimentation tank (13) provided at the front left end inside the treatment tank (11);
a flocculation tank (14) provided at the rear end of the sedimentation tank (13);
the anoxic tank (15) is arranged at the right end of the flocculation tank (14);
an anaerobic tank (16) which is arranged at the right end of the anoxic tank (15);
and the good nitrogen tank (17) is arranged at the right end of the anaerobic tank (16).
3. An electroplating wastewater treatment apparatus according to claim 1, characterized in that the filtering device (2) comprises:
a filter cylinder (21) which is arranged at the front side of the left end of the surface of the treatment tank (11) and can filter impurities of the electroplating wastewater;
a water outlet (22) which is provided on the lower side of the front end of the outer wall of the filter cartridge (21) and can discharge filtered water;
and the input end of the drainage pump (23) is connected with the water outlet (22), and the output end of the drainage pump is led into the sedimentation tank (13) through a pipeline.
4. An electroplating wastewater treatment apparatus according to claim 3, characterized in that the filtering device (2) comprises:
an activated carbon (24) which is placed at the inner bottom end of the filter cartridge (21) and can adsorb impurities in the electroplating wastewater;
a filter cover (25) placed on top of the filter cartridge (21);
a hydraulic cylinder (26) disposed at the top center of the filter cover (25);
the middle of the top of the limiting disc (27) is connected with the output end of the hydraulic cylinder (26), and the limiting disc can be driven by the hydraulic cylinder (26) to lift;
and the filter cotton (28) is arranged inside the limiting disc (27) and can press and filter the electroplating wastewater.
5. The electroplating wastewater treatment apparatus according to claim 1, wherein the driving device (3) comprises:
a driving motor (31) which is arranged at the front side of the right end of the outer wall of the treatment tank (11);
the screws (32) are rotatably connected inside the placing groove (12) and are arranged into two groups, the right end of the front end screw (32) is connected with the output end of the driving motor (31), and the two groups of screws (32) are driven by a belt.
6. The electroplating wastewater treatment apparatus according to claim 1, wherein the placement device (4) comprises:
a placing plate (41) with stirring devices (5) mounted at two ends of the top thereof;
and the upright column (42) is arranged around the bottom of the placing plate (41), and the inner part of the lower end of the upright column is in threaded connection with the outer wall of the screw rod (32).
7. The electroplating wastewater treatment apparatus according to claim 1, wherein the stirring device (5) comprises:
a hydraulic rod (51) which is installed around the surface of the placing plate (41) at the bottom and around the top of the top plate (52) at the top, and can lift the top plate (52);
a stirring motor (53) which is installed at the center of the surface of the top plate (52), and an output shaft penetrates through the placing plate (41) and is connected to the top of the stirring rod (54);
and a stirring rod (54) which is placed inside the treatment tank (11) and can stir the treated wastewater.
8. The electroplating wastewater treatment apparatus according to claim 1, wherein the recovery device (6) comprises:
a recovery drum (61) which is provided on the rear side of the left end of the surface of the treatment tank (11) and which can hold the treated sludge;
a recovery cover (62) placed on top of the recovery canister (61).
9. An electroplating wastewater treatment apparatus according to claim 8, characterized in that the recovery device (6) comprises:
a mud stirring motor (63) which is arranged in the center of the surface of the recovery cover (62);
the top of the rotating plate (64) is connected with the output end of the mud stirring motor (63);
a sludge stirring rod (65) which is arranged around the bottom of the rotating plate (64) and can stir the internal sludge;
electrode rods (66) arranged at both ends of the bottom of the rotating plate (64);
and the power supply box (67) is arranged on the surface of the rotating plate (64) and is electrically connected with the two groups of electrode rods (66).
10. The electroplating wastewater treatment process is characterized by comprising the following operation steps of:
s1: pouring electroplating wastewater into the filter cylinder (21), adsorbing particle impurities and part of harmful substances through the activated carbon (24) at the bottom end of the interior, starting the hydraulic cylinder (26) to enable the hydraulic cylinder (26) to drive the filter cotton (28) to press down, extruding the wastewater, further pressing and filtering impurities in the wastewater, and ensuring the cleanliness of the wastewater;
s2: the drainage pump (23) is started, the filtered wastewater is guided into the sedimentation tank (13), ferrous sulfate and hydrogen peroxide are added into the sedimentation tank (13) to adjust the PH value of the electroplating wastewater, so that sludge is settled, and an oxidant and a catalyst are added into the electroplating wastewater to remove COD (chemical oxygen demand) in the wastewater;
s3: the wastewater after sedimentation in the sedimentation tank (13) is discharged in a materialized manner, heavy metal zinc is captured, and PAC and PAM are added into the flocculation tank (14) for flocculation to flocculate the wastewater;
s4: the wastewater in the flocculation tank (14) is discharged into the anoxic tank (15) in a materialized manner, nitrate nitrogen in the wastewater can be converted into nitrogen gas to be discharged through nitrifying bacteria in the anoxic tank (15), and then the wastewater in the anoxic tank (15) is discharged into the anaerobic tank (16);
s5: harmful substances in the wastewater are adsorbed and purified by an MBR (membrane biological reactor) membrane inside the anaerobic tank (16), and then the wastewater in the anaerobic tank (16) is discharged into a good nitrogen tank (17);
s6: purifying the wastewater by a biological membrane hanging method through ammonia oxidizing bacteria, nitrite oxidizing bacteria and nitrifying bacteria in a good nitrogen pool (17), and finally purifying harmful substances in the waste water into ammonia gas and nitrogen gas to be discharged to obtain the wastewater with a discharge index;
s7: and then the settled sludge and the biomembrane are placed in a recovery cylinder (61), a sludge stirring motor (63) and a power supply box (67) are started to stir and electrolyze the sludge and the biomembrane, so that the internal metal ions are subjected to oxidation and reduction reactions to be settled, and then the sludge is concentrated and crystallized step by step to respectively extract various valuable metals, thereby recovering the useful metals.
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| CN202211222527.XA CN115490399A (en) | 2022-10-08 | 2022-10-08 | Electroplating wastewater treatment process and equipment thereof |
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| CN202211222527.XA CN115490399A (en) | 2022-10-08 | 2022-10-08 | Electroplating wastewater treatment process and equipment thereof |
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