CN106865816A - A kind of chemical nickel plating cleans waste water online resource method - Google Patents
A kind of chemical nickel plating cleans waste water online resource method Download PDFInfo
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- CN106865816A CN106865816A CN201710109145.9A CN201710109145A CN106865816A CN 106865816 A CN106865816 A CN 106865816A CN 201710109145 A CN201710109145 A CN 201710109145A CN 106865816 A CN106865816 A CN 106865816A
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- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
- C22B23/04—Obtaining nickel or cobalt by wet processes
- C22B23/0453—Treatment or purification of solutions, e.g. obtained by leaching
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/42—Treatment or purification of solutions, e.g. obtained by leaching by ion-exchange extraction
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/06—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese
- C25C1/08—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese of nickel or cobalt
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- 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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
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- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- 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
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- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- 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
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- 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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Abstract
The invention discloses a kind of chemical nickel plating cleaning waste water online resource method, mainly include the online reuse of rinse water, metallic nickel resource；Chemical nickel plating cleaning waste water is sequentially passed through into the cleaning of batch (-type) multi-stage countercurrent, pH adjustment, ion exchange resin and osmosis filtration treatment, the online reuse of rinse water is realized；And regeneration of ion-exchange resin liquid is acted on by the photoelectro catalytic system of electrolytic cell, the contact break of waste water and high efficiente callback and the recycling of effect and metallic nickel are realized.The present invention uses the novel compositions mode of ion exchange resin component, reverse osmosis module and photoelectrocatalysis component, can not only effective reuse chemical nickel plating rinse water, realize the online resource of metallic nickel ions, and be not required to add chemical agent, non-secondary pollution thing, operation energy consumption and financial cost are greatly reduced, with good environmental benefit and economic benefit.
Description
Technical field
The present invention relates to Industrial Wastewater Treatment and utilization technology field, more particularly to a kind of chemical nickel plating cleaning is useless
Water online resource method.
Background technology
Chemical nickel plating due to the comprehensive physical chemical property such as outstanding uniformity, hardness, wear resisting and corrosion resistance, extensively
It is general to be applied to the industrial circles such as Aero-Space, automobile, pump manufacture, valve manufacture.The treatment of chemical nickel plating cleaning waste water is also gradually
As the subject matter in production practices.It is poisonous containing plurality of heavy metal, buffer salt, complexing agent etc. in chemical nickel plating cleaning waste water
Harmful substance, these poisonous and harmful substances once enter environment, will necessarily cause extremely serious to human health and environment
Harm.
Resource is recycled all referring to the environmental protection of waste, therefore recycling and resource are often mentioned in the same breath.《Middle Chinese
People republic recycling economy promotion law》In just specify, " during refuse reclamation and resource, production safety should be ensured,
Ensure that product quality meets state specified standards, and prevent to pollute again." " enterprise and institution should establish and improve
Management system, takes measures, and reduces resource consumption, reduces the yield and discharge capacity of waste, improves the recycling and money of waste
Source level." " planning for circular economic development should include the object of planning, the scope of application, main contents, key task and guarantee
Measure etc., and specify the indexs such as resource output capacity, refuse reclamation and resource rate." method requirement " State Council standardization supervisor
Department can establish and improve recycling economy mark with relevant authorities such as State Council's recycling economy development integrated management and environmental protection
Quasi- system, formulates and optimizes energy-conservation, water saving, the section standard such as material and refuse reclamation, resource.”
Current chemical nickle-plating wastewater treatment most common method has chemical precipitation method, ion-exchange and membrane separation process, though
Right chemical precipitation method can effectively remove the nickel ion in chemical nickle-plating wastewater, but still can produce a large amount of sludge, it is necessary to further
Professional treatment.Single ion-exchange and membrane separation process can only partly realize the reuse of nickel ion, it is difficult to fully achieve metal
The recycling of nickel.If ion-exchange, membrane separation process are combined realizing the concentration and separation of chemical nickle-plating wastewater,
Not only can reuse rinse water online, and the online resource of metallic nickel can be further realized by photoelectrocatalysidevice device, make
Enterprise obtains considerable economic benefit.
The content of the invention
The present invention provides a kind of chemical nickel plating cleaning waste water online resource method, by ion exchange resin component, reverse osmosis
Saturating component and photoelectrocatalysis component combine, while realizing online reuse and the metallic nickel online resource of chemical nickel plating rinse water
Change.
The technical scheme is that：A kind of chemical nickel plating cleans waste water online resource method, mainly including following step
Suddenly：
(1) batch (-type) three-level backwash：Chemical nickel plating is cleaned into waste water through batch (-type) three-level backwash initial concentration,
So that the nickel ion concentration in waste water is 30-300mg/L；
(2) pH regulations：The pH value of waste water is detected using pH online instrument, then using pH adjusting agent by chemical nickel plating
The pH for cleaning waste water is adjusted to 3-10；
(3) ion exchange resin treatment：It is 25-35 DEG C to control wastewater temperature, and working flow is the condition of 1.5-2.5BV/h
Under by being filled with the resin bed of ion exchange resin, the nickel ion for making chemical nickel plating clean in waste water it is corresponding in resin from
Subbase group is exchanged, and deresination bed is washed with deionized water, and the nickel ion exchanged on ion exchange resin is eluted, and is obtained
To regenerated liquid；
(4) reverse osmosis membrane processing：Counter-infiltration concentrate is carried out into reverse osmosis membrane after the waste water supercharging after nickel ion will be reclaimed,
The multiple of concentrate be 1-8 times, the water outlet of clear water side as the online reuse of chemical nickel plating rinse water, the water outlet of reverse osmosis concentrated water side return from
Sub-exchange resin carries out concentrated water circulation；
(5) metallic nickel is reclaimed：Regeneration of ion-exchange resin liquid is processed using efficient photoelectricity treater catalytic unit, chemistry
In titanium dioxide anodic oxidation, nickel ion is deposited as metallic nickel to organic matter in nickel plating cleaning waste water in cathodic reduction, by light
Discharge standard is reached after electro-catalysis, the contact break of waste water and high efficiente callback and the recycling of effect and metallic nickel is realized.
Further, described batch (-type) three-level backwash be by after waste water storage using being provided with the defeated of metering device
Go out pump pressurization output, be sequentially connected 3 cleaning devices, the inlet channel of two neighboring cleaning device is connected with outlet conduit, 3
Flow control valve is installed on the pipeline between individual cleaning device, controls the flow between cleaning sinks at different levels, delivery pump quantitatively to discharge
The rinse water of ormal weight, single displacement is not more than the water between two position, it is ensured that plating piece is completely submerged in cleaning
In water, the inlet channel of cleaning device is connected with water system, and the outlet conduit of cleaning device is connected with waste water storage device.
Further, described ion exchange resin is that strong-acid cation-exchange resin is BK001 and polyacrylic
The mixture of strong basic anion-exchange resin, its mixed proportion is 1:1, specific surface area is 100-200m2/g, is entered before the use
Row strong acid and strong base is pre-processed.
Further, the hot water of 60-70 DEG C of the use of resin is soaked and is cleaned repeatedly, when starting immersion, every 30 points
Zhong Huanshui once, will be stirred frequently during immersion, after changing water 3-5 times, then change water once every 60 minutes, immersion and be cleaned to resin
Color be not changed in untill；Then, described tree is first flowed through with the flow velocity of 1.5mL/min with the sodium hydroxide solution of 1.5N
Fat, it is 10 to be processed resin and rinsed to pH value with deionized water, and consumption is 2-3 times of described resin volume, flow velocity per hour 1.5
Times resin bed volume；The hydrochloric acid solution for reusing 1.5N flows through, and it is 3 to be washed till pH value, and consumption is the 3-5 of the resin volume
Times, flow velocity 1.5 times of bed volumes per hour.
Further, described reverse osmosis membrane processing device is by intake pump, high-pressure pump, circulating pump, film framework, reverse osmosis membrane
Component, backwashing pump, medicine system, chemical cleaning system and instrument and meter are formed by connecting；Described reverse osmosis membrane assembly is arranged on
In film framework, including coiled reverse osmosis membrane and pressure-bearing putamina；Described reverse osmosis membrane is rolled film, and membrane material is compound for polyamide
Film, the waste water supercharging before reverse osmosis membrane processing is more than 15bar.
Further, described pH adjusting agent is 40% sodium hydroxide solution or 25% hydrochloric acid solution.
Further, described efficient photoelectricity treater catalytic unit is optoelectronic pole from titanium dioxide, and ultraviolet light is light source, electric current
Density is 0.5-1.5mA/cm2, the photohole effect using titanium dioxide under ultraviolet lighting, direct oxidation or produce hydroxyl
Organic matter in free-radical oxidation chemical plating rinse water, while the metal ion of the complex state in making water is changed into the gold of free state
Category ion；The metal ion of free state is migrated to negative electrode in the presence of extra electric field, and deposition is reduced on negative electrode, by light
Electro-catalysis process can realize the efficient removal of chemical plating cleaning Organic substance in water and the online resource of nickel ion.
Further, described discharge standard refers to that COD concentration in chemical nickel plating rinse water is reduced to below 60mg/L,
Nickel ion concentration is less than 0.1mg/L.
Compared with prior art, the chemical nickel plating cleaning waste water online resource method of offer of the invention, by interval
The chemical nickel plating cleaning waste water of formula multi-stage countercurrent rinse bath discharge, adjusts, then by ion exchange resin and instead through pH first
The separation and concentration of permeable membrane, realize the online reuse of rinse water；And regeneration of ion-exchange resin liquid is by the light of electrolytic cell
Electric catalyticing system is acted on, and is capable of achieving the contact break and effect and the high efficiente callback of metallic nickel of waste water, can not only effectively reuse it is chemical
Nickel plating cleaning water, realizes the online resource of metallic nickel ions, and is not required to add chemical agent, non-secondary pollution thing, significantly
Operation energy consumption and financial cost are reduced, with good environmental benefit and economic benefit.
Brief description of the drawings
Fig. 1 is the process chart that a kind of chemical nickel plating that patent of the present invention is proposed cleans waste water online resource method.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with accompanying drawing of the invention,
Technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is the present invention one
Divide embodiment, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, belongs to the scope of protection of the invention.
Embodiment 1：As shown in figure 1, a kind of chemical nickel plating cleaning waste water online resource method, mainly including following step
Suddenly：
(1) batch (-type) three-level backwash：Chemical nickel plating is cleaned after waste water storage using being provided with the defeated of metering device
Go out pump pressurization output, be sequentially connected 3 cleaning devices, the inlet channel of two neighboring cleaning device is connected with outlet conduit, 3
Flow control valve is installed on the pipeline between individual cleaning device, controls the flow between cleaning sinks at different levels, delivery pump quantitatively to discharge
The rinse water of ormal weight, single displacement is not more than the water between two position, it is ensured that plating piece is completely submerged in cleaning
In water, the inlet channel of cleaning device is connected with water system, and the outlet conduit of cleaning device is connected with waste water storage device, warp
Batch (-type) three-level backwash initial concentration so that the nickel ion concentration in waste water is 30mg/L；
(2) pH regulations：The pH value of waste water is detected using pH online instrument, then using pH adjusting agent by chemical nickel plating
The pH for cleaning waste water is adjusted to 3, and pH adjusting agent is 40% sodium hydroxide solution or 25% hydrochloric acid solution；
(3) ion exchange resin treatment：
A. resin acid alkalescence pretreatment：The hot water of 60 DEG C of the use of resin is soaked and cleaned repeatedly, when starting immersion, often
Water being changed every 30 minutes once, being stirred frequently during immersion, after changing water 3 times, then changed water once every 60 minutes, immersion and cleaning are extremely
Untill the color of resin is not changed in；Then, resin is first flowed through with the flow velocity of 1.5mL/min with the sodium hydroxide solution of 1.5N,
It is 10 to be processed resin and rinsed to pH value with deionized water, and consumption is 2 times of resin volume, flow velocity 1.5 times of resin beds per hour
Volume；The hydrochloric acid solution for reusing 1.5N flows through, and it is 3 to be washed till pH value, and consumption is 3 times of the resin volume, and flow velocity is per hour
1.5 times of bed volumes；
B. ion exchange：Wastewater temperature is controlled for 25 DEG C, working flow is by being filled with ion under conditions of 1.5BV/h
The resin bed of exchanger resin, the nickel ion for making chemical nickel plating clean in waste water is exchanged to the corresponding ionic group in resin,
Deresination bed is washed with deionized water, the nickel ion exchanged on ion exchange resin is eluted, obtain regenerated liquid；
(4) reverse osmosis membrane processing：It is more than 15bar that the waste water supercharging after nickel ion will be reclaimed, and is carried out into reverse osmosis membrane
Counter-infiltration concentrate, the multiple of concentrate is 1 times, and the water outlet of clear water side is used as the online reuse of chemical nickel plating rinse water, reverse osmosis concentrated water side
Water outlet returns to ion exchange resin and carries out concentrated water circulation；
(5) metallic nickel is reclaimed：Regeneration of ion-exchange resin liquid is processed using efficient photoelectricity treater catalytic unit, chemistry
In titanium dioxide anodic oxidation, nickel ion is deposited as metallic nickel to organic matter in nickel plating cleaning waste water in cathodic reduction, by light
Discharge standard is reached after electro-catalysis, the COD concentration in chemical nickel plating rinse water is reduced to below 60mg/L, and nickel ion concentration is less than
0.1mg/L, realizes the contact break of waste water and high efficiente callback and the recycling of effect and metallic nickel.
Wherein, batch (-type) three-level backwash be will after waste water storage using be provided with metering device rear pump pressurize it is defeated
Go out, be sequentially connected 3 cleaning devices, the inlet channel of two neighboring cleaning device is connected with outlet conduit, in 3 cleaning devices
Between pipeline on flow control valve is installed, control the flow between cleaning sinks at different levels, delivery pump quantitatively to discharge the clear of ormal weight
Wash water, single displacement is not more than the water between two position, it is ensured that during plating piece is completely submerged in water in cleaning, cleaning dress
The inlet channel put is connected with water system, and the outlet conduit of cleaning device is connected with waste water storage device.
Ion exchange resin is that strong-acid cation-exchange resin is BK001 and the strong alkali anion of polyacrylic exchanges tree
The mixture of fat, its mixed proportion is 1:1, specific surface area is 100m2/ g, carries out strong acid and strong base pretreatment before the use.
Reverse osmosis membrane processing device by intake pump, high-pressure pump, circulating pump, film framework, reverse osmosis membrane assembly, backwashing pump, plus
Medicine system, chemical cleaning system and instrument and meter are formed by connecting；Reverse osmosis membrane assembly is arranged in film framework, including rolling reverse osmosis
Permeable membrane and pressure-bearing putamina；Reverse osmosis membrane is rolled film, and membrane material is polyamide composite film.
Efficient photoelectricity treater catalytic unit is optoelectronic pole from titanium dioxide, and ultraviolet light is light source, and current density is 0.5mA/
cm2, the photohole effect using titanium dioxide under ultraviolet lighting, direct oxidation or generation hydroxyl radical free radical oxidation chemistry are plated
Organic matter in rinse water, while the metal ion of the complex state in making water is changed into the metal ion of free state；Free state
Metal ion is migrated to negative electrode in the presence of extra electric field, and deposition is reduced on negative electrode, can be with by photoelectrocatalysis process
Realize the efficient removal of chemical plating cleaning Organic substance in water and the online resource of nickel ion.
Embodiment 2：As shown in figure 1, a kind of chemical nickel plating cleaning waste water online resource method, mainly including following step
Suddenly：
(1) batch (-type) three-level backwash：Chemical nickel plating is cleaned after waste water storage using being provided with the defeated of metering device
Go out pump pressurization output, be sequentially connected 3 cleaning devices, the inlet channel of two neighboring cleaning device is connected with outlet conduit, 3
Flow control valve is installed on the pipeline between individual cleaning device, controls the flow between cleaning sinks at different levels, delivery pump quantitatively to discharge
The rinse water of ormal weight, single displacement is not more than the water between two position, it is ensured that plating piece is completely submerged in cleaning
In water, the inlet channel of cleaning device is connected with water system, and the outlet conduit of cleaning device is connected with waste water storage device, warp
Batch (-type) three-level backwash initial concentration so that the nickel ion concentration in waste water is 180mg/L；
(2) pH regulations：The pH value of waste water is detected using pH online instrument, then using pH adjusting agent by chemical nickel plating
The pH for cleaning waste water is adjusted to 7, and pH adjusting agent is 40% sodium hydroxide solution or 25% hydrochloric acid solution；
(3) ion exchange resin treatment：
A. resin acid alkalescence pretreatment：The hot water of 65 DEG C of the use of resin is soaked and cleaned repeatedly, when starting immersion, often
Water being changed every 30 minutes once, being stirred frequently during immersion, after changing water 4 times, then changed water once every 60 minutes, immersion and cleaning are extremely
Untill the color of resin is not changed in；Then, resin is first flowed through with the flow velocity of 1.5mL/min with the sodium hydroxide solution of 1.5N,
It is 10 to be processed resin and rinsed to pH value with deionized water, and consumption is 2.5 times of resin volume, flow velocity 1.5 times of resin beds per hour
Layer volume；The hydrochloric acid solution for reusing 1.5N flows through, and it is 3 to be washed till pH value, and consumption is 4 times of the resin volume, and flow velocity is per small
When 1.5 times of bed volumes；
B. ion exchange：Wastewater temperature is controlled for 30 DEG C, working flow is to be handed over by being filled with ion under conditions of 2BV/h
The resin bed of resin is changed, the nickel ion for making chemical nickel plating clean in waste water is exchanged to the corresponding ionic group in resin, used
Deionized water elutes resin bed, and the nickel ion exchanged on ion exchange resin is eluted, and obtains regenerated liquid；
(4) reverse osmosis membrane processing：It is more than 15bar that the waste water supercharging after nickel ion will be reclaimed, and is carried out into reverse osmosis membrane
Counter-infiltration concentrate, the multiple of concentrate is 5 times, and the water outlet of clear water side is used as the online reuse of chemical nickel plating rinse water, reverse osmosis concentrated water side
Water outlet returns to ion exchange resin and carries out concentrated water circulation；
(5) metallic nickel is reclaimed：Regeneration of ion-exchange resin liquid is processed using efficient photoelectricity treater catalytic unit, chemistry
In titanium dioxide anodic oxidation, nickel ion is deposited as metallic nickel to organic matter in nickel plating cleaning waste water in cathodic reduction, by light
Discharge standard is reached after electro-catalysis, the COD concentration in chemical nickel plating rinse water is reduced to below 60mg/L, and nickel ion concentration is less than
0.1mg/L, realizes the contact break of waste water and high efficiente callback and the recycling of effect and metallic nickel.
Wherein, batch (-type) three-level backwash be will after waste water storage using be provided with metering device rear pump pressurize it is defeated
Go out, be sequentially connected 3 cleaning devices, the inlet channel of two neighboring cleaning device is connected with outlet conduit, in 3 cleaning devices
Between pipeline on flow control valve is installed, control the flow between cleaning sinks at different levels, delivery pump quantitatively to discharge the clear of ormal weight
Wash water, single displacement is not more than the water between two position, it is ensured that during plating piece is completely submerged in water in cleaning, cleaning dress
The inlet channel put is connected with water system, and the outlet conduit of cleaning device is connected with waste water storage device.
Ion exchange resin is that strong-acid cation-exchange resin is BK001 and the strong alkali anion of polyacrylic exchanges tree
The mixture of fat, its mixed proportion is 1:1, specific surface area is 150m2/ g, carries out strong acid and strong base pretreatment before the use.
Reverse osmosis membrane processing device by intake pump, high-pressure pump, circulating pump, film framework, reverse osmosis membrane assembly, backwashing pump, plus
Medicine system, chemical cleaning system and instrument and meter are formed by connecting；Reverse osmosis membrane assembly is arranged in film framework, including rolling reverse osmosis
Permeable membrane and pressure-bearing putamina；Reverse osmosis membrane is rolled film, and membrane material is polyamide composite film.
Efficient photoelectricity treater catalytic unit is optoelectronic pole from titanium dioxide, and ultraviolet light is light source, and current density is 1mA/cm2,
Photohole effect using titanium dioxide under ultraviolet lighting, direct oxidation or the oxidation chemistry plating cleaning of generation hydroxyl radical free radical
Organic matter in water, while the metal ion of the complex state in making water is changed into the metal ion of free state；The metal of free state
Ion is migrated to negative electrode in the presence of extra electric field, and deposition is reduced on negative electrode, can be realized by photoelectrocatalysis process
The efficient removal of chemical plating cleaning Organic substance in water and the online resource of nickel ion.
Embodiment 3：As shown in figure 1, a kind of chemical nickel plating cleaning waste water online resource method, mainly including following step
Suddenly：
(1) batch (-type) three-level backwash：Chemical nickel plating is cleaned after waste water storage using being provided with the defeated of metering device
Go out pump pressurization output, be sequentially connected 3 cleaning devices, the inlet channel of two neighboring cleaning device is connected with outlet conduit, 3
Flow control valve is installed on the pipeline between individual cleaning device, controls the flow between cleaning sinks at different levels, delivery pump quantitatively to discharge
The rinse water of ormal weight, single displacement is not more than the water between two position, it is ensured that plating piece is completely submerged in cleaning
In water, the inlet channel of cleaning device is connected with water system, and the outlet conduit of cleaning device is connected with waste water storage device, warp
Batch (-type) three-level backwash initial concentration so that the nickel ion concentration in waste water is 300mg/L；
(2) pH regulations：The pH value of waste water is detected using pH online instrument, then using pH adjusting agent by chemical nickel plating
The pH for cleaning waste water is adjusted to 10, and pH adjusting agent is 40% sodium hydroxide solution or 25% hydrochloric acid solution；
(3) ion exchange resin treatment：
A. resin acid alkalescence pretreatment：The hot water of 70 DEG C of the use of resin is soaked and cleaned repeatedly, when starting immersion, often
Water being changed every 30 minutes once, being stirred frequently during immersion, after changing water 5 times, then changed water once every 60 minutes, immersion and cleaning are extremely
Untill the color of resin is not changed in；Then, resin is first flowed through with the flow velocity of 1.5mL/min with the sodium hydroxide solution of 1.5N,
It is 10 to be processed resin and rinsed to pH value with deionized water, and consumption is 3 times of resin volume, flow velocity 1.5 times of resin beds per hour
Volume；The hydrochloric acid solution for reusing 1.5N flows through, and it is 3 to be washed till pH value, and consumption is 5 times of the resin volume, and flow velocity is per hour
1.5 times of bed volumes；
B. ion exchange：Wastewater temperature is controlled for 35 DEG C, working flow is by being filled with ion under conditions of 2.5BV/h
The resin bed of exchanger resin, the nickel ion for making chemical nickel plating clean in waste water is exchanged to the corresponding ionic group in resin,
Deresination bed is washed with deionized water, the nickel ion exchanged on ion exchange resin is eluted, obtain regenerated liquid；
(4) reverse osmosis membrane processing：It is more than 15bar that the waste water supercharging after nickel ion will be reclaimed, and is carried out into reverse osmosis membrane
Counter-infiltration concentrate, the multiple of concentrate is 8 times, and the water outlet of clear water side is used as the online reuse of chemical nickel plating rinse water, reverse osmosis concentrated water side
Water outlet returns to ion exchange resin and carries out concentrated water circulation；
(5) metallic nickel is reclaimed：Regeneration of ion-exchange resin liquid is processed using efficient photoelectricity treater catalytic unit, chemistry
In titanium dioxide anodic oxidation, nickel ion is deposited as metallic nickel to organic matter in nickel plating cleaning waste water in cathodic reduction, by light
Discharge standard is reached after electro-catalysis, the COD concentration in chemical nickel plating rinse water is reduced to below 60mg/L, and nickel ion concentration is less than
0.1mg/L, realizes the contact break of waste water and high efficiente callback and the recycling of effect and metallic nickel.
Wherein, batch (-type) three-level backwash be will after waste water storage using be provided with metering device rear pump pressurize it is defeated
Go out, be sequentially connected 3 cleaning devices, the inlet channel of two neighboring cleaning device is connected with outlet conduit, in 3 cleaning devices
Between pipeline on flow control valve is installed, control the flow between cleaning sinks at different levels, delivery pump quantitatively to discharge the clear of ormal weight
Wash water, single displacement is not more than the water between two position, it is ensured that during plating piece is completely submerged in water in cleaning, cleaning dress
The inlet channel put is connected with water system, and the outlet conduit of cleaning device is connected with waste water storage device.
Ion exchange resin is that strong-acid cation-exchange resin is BK001 and the strong alkali anion of polyacrylic exchanges tree
The mixture of fat, its mixed proportion is 1:1, specific surface area is 200m2/ g, carries out strong acid and strong base pretreatment before the use.
Reverse osmosis membrane processing device by intake pump, high-pressure pump, circulating pump, film framework, reverse osmosis membrane assembly, backwashing pump, plus
Medicine system, chemical cleaning system and instrument and meter are formed by connecting；Reverse osmosis membrane assembly is arranged in film framework, including rolling reverse osmosis
Permeable membrane and pressure-bearing putamina；Reverse osmosis membrane is rolled film, and membrane material is polyamide composite film.
Efficient photoelectricity treater catalytic unit is optoelectronic pole from titanium dioxide, and ultraviolet light is light source, and current density is 1.5mA/
cm2, the photohole effect using titanium dioxide under ultraviolet lighting, direct oxidation or generation hydroxyl radical free radical oxidation chemistry are plated
Organic matter in rinse water, while the metal ion of the complex state in making water is changed into the metal ion of free state；Free state
Metal ion is migrated to negative electrode in the presence of extra electric field, and deposition is reduced on negative electrode, can be with by photoelectrocatalysis process
Realize the efficient removal of chemical plating cleaning Organic substance in water and the online resource of nickel ion.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
Modified with to the technical scheme described in previous embodiment, or equivalent is carried out to which part technical characteristic；And
These modifications are replaced, and do not make the spirit and model of the essence disengaging embodiment of the present invention technical scheme of appropriate technical solution
Enclose.
Claims (7)
1. a kind of chemical nickel plating cleans waste water online resource method, it is characterised in that mainly include the following steps that：
(1) batch (-type) three-level backwash：Chemical nickel plating is cleaned into waste water through batch (-type) three-level backwash initial concentration so that
Nickel ion concentration in waste water is 30-300mg/L；
(2) pH regulations：The pH value of waste water is detected using pH online instrument, is then cleaned chemical nickel plating using pH adjusting agent
The pH of waste water is adjusted to 3-10；
(3) ion exchange resin treatment：It is 25-35 DEG C to control wastewater temperature, and working flow is logical under conditions of 1.5-2.5BV/h
The resin bed for being filled with ion exchange resin is crossed, makes nickel ion and the corresponding ion radical in resin that chemical nickel plating is cleaned in waste water
Group is exchanged, and deresination bed is washed with deionized water, and the nickel ion exchanged on ion exchange resin is eluted, and is obtained again
Raw liquid；
(4) reverse osmosis membrane processing：After the waste water supercharging after nickel ion will be reclaimed counter-infiltration concentrate, concentrate are carried out into reverse osmosis membrane
Multiple be about 1-8 times, the water outlet of clear water side as the online reuse of chemical nickel plating rinse water, the water outlet of reverse osmosis concentrated water side return from
Sub-exchange resin carries out concentrated water circulation；
(5) metallic nickel is reclaimed：Regeneration of ion-exchange resin liquid is processed using efficient photoelectricity treater catalytic unit, chemical nickel plating
In titanium dioxide anodic oxidation, nickel ion is deposited as metallic nickel to organic matter in cleaning waste water in cathodic reduction, is urged by photoelectricity
Discharge standard is reached after change, the contact break of waste water and high efficiente callback and the recycling of effect and metallic nickel is realized.
2. a kind of chemical nickel plating as claimed in claim 1 cleans waste water online resource method, it is characterised in that between described
Formula of having a rest three-level backwash is will to pressurize to export using the rear pump for being provided with metering device after waste water storage, is sequentially connected 3
Cleaning device, the inlet channel of two neighboring cleaning device is connected with outlet conduit, pacifies on the pipeline between 3 cleaning devices
Dress flow control valve, controls the flow between cleaning sinks at different levels, delivery pump quantitatively to discharge the rinse water of ormal weight, single displacement
Water no more than between two position, it is ensured that plating piece is completely submerged in water in cleaning, the inlet channel of cleaning device with
Water system is connected, and the outlet conduit of cleaning device is connected with waste water storage device.
3. a kind of chemical nickel plating cleaning waste water online resource method as claimed in claim 1, it is characterised in that it is described from
Sub-exchange resin is the mixing of the strong basic anion-exchange resin that strong-acid cation-exchange resin is BK001 and polyacrylic
Thing, its mixed proportion is 1:1, specific surface area is 100-200m2/g, and strong acid and strong base pretreatment is carried out before the use.
4. a kind of chemical nickel plating as claimed in claim 1 cleans waste water online resource method, it is characterised in that described is anti-
Infiltration membrane treatment appts are by intake pump, high-pressure pump, circulating pump, film framework, reverse osmosis membrane assembly, backwashing pump, medicine system, chemistry
Purging system and instrument and meter are formed by connecting；Described reverse osmosis membrane assembly is arranged in film framework, including coiled reverse osmosis membrane
With pressure-bearing putamina；Described reverse osmosis membrane is rolled film, and membrane material is polyamide composite film, and the waste water before reverse osmosis membrane processing increases
Press as more than 15bar.
5. a kind of chemical nickel plating as claimed in claim 1 cleans waste water online resource method, it is characterised in that described pH
Conditioning agent is 40% sodium hydroxide solution or 25% hydrochloric acid solution.
6. a kind of chemical nickel plating as claimed in claim 1 cleans waste water online resource method, it is characterised in that described height
Effect photoelectrocatalysidevice device is optoelectronic pole from titanium dioxide, and ultraviolet light is light source, and current density is 0.5-1.5mA/cm2。
7. a kind of chemical nickel plating as claimed in claim 1 cleans waste water online resource method, it is characterised in that described row
The standard of putting refers to that the COD concentration in chemical nickel plating rinse water is reduced to below 60mg/L, and nickel ion concentration is less than 0.1mg/L.
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Application publication date: 20170620 |