CN205933354U - Processing apparatus of chemical nickel plating waste liquid - Google Patents
Processing apparatus of chemical nickel plating waste liquid Download PDFInfo
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- CN205933354U CN205933354U CN201620885881.4U CN201620885881U CN205933354U CN 205933354 U CN205933354 U CN 205933354U CN 201620885881 U CN201620885881 U CN 201620885881U CN 205933354 U CN205933354 U CN 205933354U
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Abstract
The utility model relates to a processing apparatus of chemical nickel plating waste liquid, the device include advanced oxidation retort, ozone generator and hydrogen peroxide solution storage tank, wherein, the inside gas -liquid mixer who sets up a centrum shape of advanced oxidation retort, gas -liquid mixer inlays through the draw -in groove has porous gas distribution board, porous gas distribution board splits into upper end catalytic oxidation district with the advanced oxidation retort and overflow district, lower extreme gas -liquid mixture distinguish, gas -liquid mixer's lower extreme is the gas -liquid mixer export, install at least three support column in the gas -liquid mixer export, the upper end outside of advanced oxidation retort is provided with the overflow weir and connects the fluid -discharge tube below the overflow weir, the hydrogen peroxide solution storage tank through the pipeline with set up valve, the flowmeter on the pipeline and inhale the booster pump certainly and be connected with advanced oxidation retort top, ozone generator passes through the pipeline and is connected with advanced oxidation retort top with the flowmeter that sets up on the pipeline. The utility model discloses the device can make the waste liquid reach emission standard.
Description
Technical field
The utility model belongs to technical field of waste water processing and in particular to a kind of catalysis of circuit board plant chemical nickel plating waste solution
Oxidation treatment device.
Background technology
The kind of waste water of wiring board manufacturing enterprise discharge is more, but mainly five kinds of the high-concentration waste liquid of discharge, organic
Development moves back film waste liquid, acid waste liquid, alkaline waste liquor, micro-corrosion liquid, nickeliferous waste liquid, although these discharging of waste liquid amounts are total in enterprise wastewater
In amount, accounting is relatively low, but its pollutant contribution rate more than 85%, pollutant kind is many, concentration is high, difficult, wherein with nickeliferous
The chemical nickel plating waste solution of the nickel chemical plating technology discharge in waste liquid is most difficult to process, and calls it as chemical nickel plating waste solution in the application,
The nickel complex with stronger complexing is there is in chemical nickel plating waste solution, a large amount of buffers such as acetic acid, succinic acid etc., reproducibility
Hypophosphites and phosphite, also brightener and stabilizer, the large amount of organic existing and reducing substances lead to plating solution
COD value is up to hundreds of thousands mg/L, and total phosphorus reaches tens of thousands of mg/L.Such chemical nickel plating waste solution enters the sewage disposal system band of garden
Carry out huge impact load, lead to total phosphorus in effluent quality and nickel regular exceeded, and nickeliferous chemical nickel plating waste solution belongs to
In first kinds of pollution matter, need to entrust the qualified enterprise of tool to carry out recycling disposal, the waste liquid disposal costs per ton having reach nearly ten thousand
Unit, brings larger financial burden and environmental protection pressure to enterprise.If mishandling, serious environmental pollution more can be brought to ask
Topic.
In recent years, the nickeliferous waste liquid method of disposal research for circuit board plant is more, mainly two class methods, and one is by
Recycling after proper treatment, for example,《Chemical nickel plating waste solution processing equipment up to standard（CN204607752U）》Utility model is special
Describe a kind of Oak Ridge K-25 research institute of U.S. in profit and develop EVNIR-CP chemical nickel-plating liquid regeneration technology.This technique is in groove
While setting up the bypath system except sodium phosphite of a cycle and continous way, to control plating solution phosphorous acid sodium and sodium sulphate to exist
Relatively low concentration level, keeps the composition of chemical nickel-plating liquid and stablizing of plating speed.Also with good grounds ion exchange principle or electric osmose
Analysis principle removes sodium phosphite, makes the process research of nickel-plating waste liquid regeneration.Due to the complicated component of electroplating effluent,
The plating solution of regeneration does not often reach higher and higher wiring board coating standard and requires, so, wiring board enterprise does not use substantially
Regeneration plating solution.Two is that qualified discharge after nickel is reclaimed in harmless treatment, and such technology category is more,（1）The precipitation method, broken in oxidation
After network, add and free Ni2+In conjunction with the reagent generating precipitation.By adding NaOH, CaO, sulfide etc., nickel ion is made to generate
Precipitation, and nickel ion is removed from waste liquid.（2）Oxidation-reduction method, after chemical oxidation contact break, adds reducing agent, by nickel ion
It is reduced to nickel to remove.Conventional reducing agent has sodium borohydride etc..（3）Ion-exchange, after oxidation contact break, using amberlite
Cation on active group in fat exchanges with the nickel ion in waste water, and nickel ion is fixed on exchanger resin makes waste water obtain
Method to purifying.（4）Other methods, such as electrolysis and absorption method etc..In order to obtain preferable coating, in chemical nickel-plating liquid
In must add complexing agent, with nickel ion complexing, prevent nickel ion and orthophosphite ions from generating precipitation.But, this makes
Which kind of no matter reclaimed during nickel ion it is necessary first to aoxidize contact break with method Treatment of Electroless Nickel Plating Wastewater.Conventional oxidant have ozone,
Potassium permanganate, sodium hypochlorite, hydrogen peroxide etc..In plating solution, main complexing agent is orthophosphite and hypophosphorous acid root, needs him
Be converted into orthophosphoric acid root after can be only achieved the effect of contact break, in addition, the removal of phosphorus is also required to emphasis and closes in chemical nickel plating waste solution
Note, otherwise can increase subsequent biochemical and process load, and maximally effective phosphorus removing method is exactly to produce phosphoric acid using phosphate radical with calcium ion
The precipitation method of calcium, therefore, oxidation contact break is not only advantageous to the recovery of nickel ion and can assist the removal of phosphorus.But, chemistry
There is competitive oxidation relation in the reproducibility composition such as organic matter in nickel-plating waste liquid and complexing agent, if preferable contact break effect will be reached
Fruit is necessary for initial oxidation and decomposes most of organic matter, the COD value of chemical nickel plating waste solution is reduced to below 6000mg/L, ability
Reach preferable contact break effect.But single using certain oxidant, preferable contact break effect can not be reached.Therefore, grind
The person of studying carefully carries out contact break using the Fenton oxidation method of high-level oxidation technology（CN104386874A、CN204607752U）, applicant
Company is also carrying out chemical nickel plating waste solution process using the method, but from the point of view of the actual running results, contact break efficiency is only in 55-
Between 65%, waste liquid leads to water outlet nickel and phosphorus often exceeded after entering rear end biochemical treatment system.And Fenton oxidation method needs
Using substantial amounts of iron filings and acid-base reagent, discharge a large amount of sludge silts（Hazardous waste）, be unfavorable for follow-up nickel ion reclaim it is seen then that
The contact break of Fenton oxidation method acts on nor meets liquid waste processing and requires, and is badly in need of the new oxidation contact break method of exploitation.
Content of the invention
The purpose of this utility model is to provide a kind of processing meanss of chemical nickel plating waste solution, this device adopt a kind of ozone/
The chemical nickel plating waste solution of the method process circuit plate of dioxygen water coincidence heterogeneous catalytic oxidation, realizes destroying organic matter and complexing
Agent, so that the phosphorus of different shape is converted into orthophosphates form, then precipitation removes nickel to release nickel ion and phosphorus makes waste liquid reach
Discharge standard.
The utility model is achieved through the following technical solutions：A kind of processing meanss of chemical nickel plating waste solution, this device
Including advanced oxidation retort, ozone generator and hydrogen peroxide storage tank, wherein, advanced oxidation retort is a cylindrical shape
Tank body, tank interior arranges the air and liquid mixer of a centrum shape, and described air and liquid mixer is inlaid with porous by draw-in groove
Air distribution plate, advanced oxidation retort is divided into described porous air distribution plate upper end catalysis oxidation area and overflow area, lower end gas-liquid are mixed
Close area；The lower end of described air and liquid mixer is air and liquid mixer outlet, and described air and liquid mixer outlet installs at least three
Dagger, is provided with downflow weir and the discharging tube being connected to below downflow weir outside the upper end of described advanced oxidation retort, described
Hydrogen peroxide storage tank passes through pipeline and reacts upper end with valve, flowmeter and the spontaneous imbibition booster pump being arranged on pipeline with advanced oxidation
Connect；Described ozone generator reacts upper end with the flowmeter being arranged on pipeline with advanced oxidation by pipeline and is connected, and changes
Learn nickel-plating waste liquid and send into advanced oxidation retort from the top inlet of air and liquid mixer.
In order to keep beds stable, the diameter of the pore on porous air distribution plate is less than catalyst particle diameter, gas
Liquid mixer outlet is apart from 10 centimetres of the bottom of advanced oxidation retort.
Advanced oxidation retort is divided into gas-liquid mixed area, catalysis oxidation area, drainage region by the utility model device.In gas
In liquid mixed zone, under streams of ozone agitation, waste liquid is mixed with hydrogen peroxide, obtains ozone, waste liquid and hydrogen peroxide gas-liquid mixed
Thing, and between three, there is Heterogeneous oxidation reaction, then enter catalysis oxidation area, gas-liquid mixed from the bottom of air and liquid mixer
Thing carries out sufficient heterogeneous catalytic oxidation reaction through porous air distribution plate even into catalyst layer, most of ozone and double
Oxygen is consumed, and waste liquid flows into overflow area, and remaining ozone and dioxygen are completely consumed, and the waste liquid after process and catalyst divide
From, then from downflow weir outflow, entrance nickel recovery pond.
The technical scheme that the utility model provides has the advantage that：
（1）The advanced oxidation reaction unit of the utility model design, can make oxidant and waste liquid be sufficiently mixed reaction, oxygen
Change efficiency and oxidant utilization significantly improves, oxidation reaction speed is accelerated, and can more thoroughly destroy the complex compound of nickel, by Asia
The phosphorus-containing compounds such as phosphate radical, hypophosphorous acid root are oxidized to orthophosphoric acid root.Make the different shape nickel in waste liquid be converted into nickel ion, contain
Phosphorus compound is converted into phosphate, is conducive to nickel, the recovery of phosphorus and removal.
（2）The advanced oxidation reaction unit of the utility model design has advanced oxidation function, can be with oxidation Decomposition chemistry
Most of reducing substances in nickel-plating waste liquid, substantially reduces the COD of chemical nickel plating waste solution, mitigates at follow-up sewage
Reason technical load.
（3）The utility model device unit capacity significantly improves, and under same treatment Capability Requirement, this equipment takes up an area
Area is less, may be mounted at it is also possible to be installed to Sewage Disposal at the discharging of waste liquid of workshop, easy and simple to handle.
（4）The utility model processes, for chemical nickel plating waste solution, technique and the device providing complete set, can solve the problem that mesh
The difficult problem that front chemical nickel plating waste solution is processed, treatment effect meet the requirement of environmental protection, equipment investment and operating cost are low, the nickel of recovery and
Phosphate can recycle, and has obvious economic worth, can compensate the expense of liquid waste processing, reduces chemical nickel plating further
Treatment cost of waste liquor.
Brief description
Fig. 1 is the utility model advanced oxidation reaction unit structural representation.
Fig. 2 is air and liquid mixer and porous gas distribution plate structure schematic diagram in the utility model Fig. 1.
Fig. 3 is the processing technological flow figure of the utility model chemical nickel plating waste solution.
Specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, new to this practicality below in conjunction with accompanying drawing
The specific embodiment of type is described in further detail.
As shown in Figure 1, 2, a kind of processing meanss of chemical nickel plating waste solution, this device includes advanced oxidation retort B1, smelly
Oxygen Generator B9 and hydrogen peroxide storage tank B10, wherein, advanced oxidation retort B1 be a cylindrical shape 304 stainless steels or
The tank body of person's plastic material, tank interior arranges the air and liquid mixer B5 of a centrum shape, and described air and liquid mixer B5 passes through
Draw-in groove B12 is inlaid with porous air distribution plate B6, and advanced oxidation retort B1 is divided into upper end catalysis oxygen by described porous air distribution plate B6
Change area B20 and overflow area B21, lower end gas-liquid mixed area B19；The lower end of described air and liquid mixer B5 is air and liquid mixer outlet
B8, described air and liquid mixer outlet B8 installs at least three support column B14, outside the upper end of described advanced oxidation retort B1
The discharging tube B7 being provided with downflow weir B17 and being connected to below downflow weir B17, described hydrogen peroxide storage tank B10 pass through pipeline and set
Put the valve B11 on pipeline, flowmeter B15 and spontaneous imbibition booster pump B18 to be connected with advanced oxidation retort B1 top；Described smelly
Oxygen Generator B9 is passed through pipeline and is connected with advanced oxidation retort B1 top with the flowmeter B16 being arranged on pipeline, chemical plating
Nickel waste liquid sends into advanced oxidation retort B1 from top inlet B2 of air and liquid mixer B8.In order to keep beds B3 steady
Fixed, the diameter of the pore B13 on porous air distribution plate B6 is less than catalyst B4 particle diameter, and air and liquid mixer outlet B8 installs and supports
Post B14, makes air and liquid mixer outlet B8 apart from 10 centimetres of the bottom of advanced oxidation retort.
As shown in Figure 3：The handling process of the utility model device is realized by following steps：Chemical nickel plating waste solution is collected
To in pH regulating tank A, add the sulfuric acid solution of concentration 5%-30% or sodium hydroxide solution that concentration is 5%-15% or dense
Spend the sodium carbonate liquor for 5%-10%, adjusting chemical nickel plating waste solution pH value is between 4.5-6.0, then will adjust the change after pH value
Learn the processing meanss that nickel-plating waste liquid sends into chemical nickel plating waste solution（Advanced oxidation reaction system）B.
As shown in Figure 1,3：Adjust the chemical nickel plating waste solution after pH value and be first fed into advanced oxidation retort B1, open ozone
Generator B9 and spontaneous imbibition booster pump B18, the flow of the Valve controlling ozone being carried by ozone emitters B9（Flowmeter B16 refers to
Show）, the ozone concentration making overflow area B21 is between 0.5-2.5mg/L；Control the addition flow of hydrogen peroxide by valve B11（Stream
Gauge B15 indicates）, the hydrogen peroxide concentration making overflow area B21 is between 0.1-0.5mL/L；In advanced oxidation retort B1
Gas-liquid mixed area B19, it is anti-that hydrogen peroxide, ozone and the chemical nickel plating waste solution adjusting after pH value carry out the raw Heterogeneous oxidation of hybrid concurrency
Should, then in the beds B3 of advanced oxidation retort B1, hydrogen peroxide, ozone give up with the chemical nickel plating adjusting after pH value
Liquid carries out heterogeneous catalytic oxidation reaction, and the chemical nickel plating waste solution after oxidation processes is from the overflow of advanced oxidation retort B1
Weir B17 collects and enters nickel recovery pond C through discharging tube B7, with the sodium hydroxide solution of concentration 5%-15% or the carbon of concentration 5%-10%
Acid sodium solution heightening pH value is between 11.5-12.5, and precipitation reclaims nickel ion；Supernatant enters dephosphorization pond D, in the D of dephosphorization pond
Calcium oxide is added to carry out precipitating dephosphorization, the addition of calcium oxide is 90～150g/ liter, the calcium phosphate of generation can be fertile as phosphate fertilizer
Source carries out reuse, and after dephosphorization, supernatant enters rear end sewage disposal system.
Described in the utility model and ozone generator be commercially available any air source of the gas ozone generator, ozone
Output reaches more than 10g/h.
Described in the utility model and hydrogen peroxide storage tank be commercially available any one aqueous corrosion of resistance to dioxygen plastics dosing
Bucket, volume is between 20-100L.Hydrogen peroxide storage tank pass through pipeline successively with spontaneous imbibition booster pump, valve, flowmeter, advanced oxidation
Retort is connected.
Described in the utility model and nickel recovery pond C, dephosphorization pond D structure identical, using integrated Pool body design, wrap
Include dosing reaction zone, tube settling district, clear liquid area and sludge discharging area, using existing any integration flocculation precipitation reaction pond
, it is prior art construction, no longer illustrate here.
In order to of the present utility model actual effect is described more fully, illustrated by specific embodiment：
Embodiment 1, application the utility model processes the chemical nickel plating waste solution of first enterprise discharge
Chemical nickel plating waste solution is collected pH regulating reservoir A, is adjusted with the sulfuric acid of concentration 15% or the sodium carbonate liquor of concentration 10%
Section pH value is 5.1, and the chemical nickel plating waste solution regulating pH pumps into advanced oxidation retort B1, opens ozone generator B9 and self-priming
The registration of booster pump B18, the flowmeter B16 of regulation and control ozone is 2.5L/min, keeps overflow area B21 ozone concentration to be 1.2mg/L,
The registration of the flowmeter B15 of regulation and control hydrogen peroxide is 0.5L/min, keeps overflow area B21 hydrogen peroxide concentration to be 0.2mg/L.Through too high
Chemical nickel plating waste solution after level oxidation reaction tank B1 catalytic oxidation enters nickel recovery pond C, adds 10% sodium carbonate liquor,
Adjusting pH is 11.9, stops reaction 2 hours, and precipitation reclaims, and supernatant enters dephosphorization pond D, adds 100g oxygen in every liter of supernatant
Change calcium, precipitation reaction 3 hours, Chinese effluent.After above-mentioned technique, the main water quality index of water outlet is：COD value is 120mg/L,
Total nickel is 0.1mg/L, and total phosphorus is 0.6mg/L.
Embodiment 2, application the utility model processes the chemical nickel plating waste solution of second enterprise discharge
Chemical nickel plating waste solution is collected pH regulating reservoir A, with the sulfuric acid of concentration 10% or the sodium hydroxide solution of concentration 10%
Adjusting pH value is 5.9, and the chemical nickel plating waste solution regulating pH pumps into advanced oxidation retort B1, open ozone generator B9 and from
Inhale booster pump B18, the registration of the flowmeter 16 of regulation and control ozone is 2.0L/min, keep overflow area B21 ozone concentration to be 0.6mg/
L, the registration of the flowmeter 15 of regulation and control hydrogen peroxide is 0.75L/min, keeps overflow area B21 hydrogen peroxide concentration to be 0.4mg/L.Through
Chemical nickel plating waste solution after advanced oxidation retort B1 catalytic oxidation enters nickel recovery pond C, and the NaOH of interpolation 10% is molten
Liquid, adjusting pH is 12.2, stops reaction 3 hours, and precipitation reclaims, and supernatant enters dephosphorization pond D, adds 110g in every liter of supernatant
Calcium oxide, precipitation reaction 5 hours, Chinese effluent.After above-mentioned technique, the main water quality index of water outlet is：COD value is 96mg/
L, total nickel is 0.02mg/L, and total phosphorus is 0.4mg/L.
Embodiment 3, application the utility model processes the chemical nickel plating waste solution of the third enterprise discharge
Chemical nickel plating waste solution is collected pH regulating reservoir A, with the sulfuric acid of concentration 20% or the sodium hydroxide solution of concentration 15%
Adjusting pH value is 4.6, and the chemical nickel plating waste solution regulating pH pumps into advanced oxidation retort B1, open ozone generator B9 and from
Inhale booster pump B18, the registration of the flowmeter 16 of regulation and control ozone is 3.0L/min, keep overflow area B21 ozone concentration to be 1.5mg/
L, the registration of the flowmeter 15 of regulation and control hydrogen peroxide is 1.2L/min, keeps overflow area B21 hydrogen peroxide concentration to be 0.45mg/L.Through
Chemical nickel plating waste solution after advanced oxidation retort B1 catalytic oxidation enters nickel recovery pond C, and the NaOH of interpolation 15% is molten
Liquid, adjusting pH is 12.3, stops reaction 4 hours, and precipitation reclaims, and supernatant enters dephosphorization pond D, adds 120g in every liter of supernatant
Calcium oxide, precipitation reaction 4 hours, Chinese effluent.After above-mentioned technique, the main water quality index of water outlet is：COD value is 88mg/
L, total nickel is 0.02mg/L, and total phosphorus is 0.2mg/L.
The above, only the utility model preferably specific embodiment, but protection domain of the present utility model is not
It is confined to this, any those familiar with the art, in the technical scope that the utility model discloses, can readily occur in
Change or replacement, all should cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should
It is defined by scope of the claims.
Claims (2)
1. a kind of processing meanss of chemical nickel plating waste solution it is characterised in that：This device includes advanced oxidation retort, ozone occurs
Device and hydrogen peroxide storage tank, wherein, described advanced oxidation retort is the tank body of a cylindrical shape, and tank interior arranges one
The air and liquid mixer of centrum shape, described air and liquid mixer is inlaid with porous air distribution plate by draw-in groove, and described porous air distribution plate will
Advanced oxidation retort is divided into upper end catalysis oxidation area and overflow area, lower end gas-liquid mixed area；Under described air and liquid mixer
End is air and liquid mixer outlet, and at least three support columns, described advanced oxidation retort are installed in described air and liquid mixer outlet
Upper end outside be provided with downflow weir and be connected to discharging tube below downflow weir, described hydrogen peroxide storage tank passes through pipeline and setting
Valve on pipeline, flowmeter and spontaneous imbibition booster pump react upper end with advanced oxidation and are connected；Described ozone generator passes through
Pipeline and the flowmeter being arranged on pipeline react upper end with advanced oxidation and are connected, and chemical nickel plating waste solution is from air and liquid mixer
Top inlet sends into advanced oxidation retort.
2. a kind of chemical nickel plating waste solution according to claim 1 processing meanss it is characterised in that：In order to keep catalyst
Bed is stable, and the diameter of the pore on porous air distribution plate is less than catalyst particle diameter, and air and liquid mixer exports apart from senior oxygen
Change 10 centimetres of the bottom of retort.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620885881.4U CN205933354U (en) | 2016-08-16 | 2016-08-16 | Processing apparatus of chemical nickel plating waste liquid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620885881.4U CN205933354U (en) | 2016-08-16 | 2016-08-16 | Processing apparatus of chemical nickel plating waste liquid |
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| CN205933354U true CN205933354U (en) | 2017-02-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109502809A (en) * | 2018-11-30 | 2019-03-22 | 广东工业大学 | Copper-containing wastewater treatment process and application |
-
2016
- 2016-08-16 CN CN201620885881.4U patent/CN205933354U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109502809A (en) * | 2018-11-30 | 2019-03-22 | 广东工业大学 | Copper-containing wastewater treatment process and application |
| CN109502809B (en) * | 2018-11-30 | 2021-07-23 | 广东工业大学 | Copper-containing wastewater treatment process and application |
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Address after: 518000 room 803, building a, Tian'an innovation and Technology Plaza, chegong temple, Tian'an community, Shatou street, Futian District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN FUTIAN DISTRICT ENVIRONMENTAL TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. Address before: Room 403, building a, phase I, chegongmiao innovation and Technology Park, Futian District, Shenzhen, Guangdong 518000 Patentee before: SHENZHEN FUTIAN DISTRICT ENVIRONMENTAL TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. |