CN106495377A - A kind of processing method of complexation nickel waste water - Google Patents
A kind of processing method of complexation nickel waste water Download PDFInfo
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/745—Iron
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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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/302—Treatment of water, waste water, or sewage by irradiation with microwaves
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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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/62—Heavy metal compounds
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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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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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
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Abstract
The invention discloses a kind of processing method of complexation nickel waste water, compared with prior art, in the present invention is supported on Fe on granular active carbon, makes support type Fe2O3FeO/GAC catalyst, heterogeneous activation persulfate system produces the complex state heavy metal in the potentiometric titrations oxidized waste water of strong oxidizing property, by destroying the rock-steady structure of complex ion, so that heavy metal separate out from complex, is removed with the method for simple alkaline chemical precipitation.The present invention builds Fe2O3FeO/GAC activates persulfate Fourier Series expansion technique, adjusts the pH value of waste water in the treatment of waste water by waste water practical situation, you can reach good treatment effect, and catalyst still has preferable catalysis activity after reusing, can substantially reduce cost for wastewater treatment.A lot of equipment investments and operating cost is not needed, convenient operation of drawing materials is simple.And absorbent charcoal carrier can be reused, and realize resource reutilization, cost-effective.
Description
Technical field
The invention belongs to complexing heavy metal waste water treatment process field, and in particular to a kind of process side of complexation nickel waste water
Method.
Background technology
Cleaning, discarded filtrate, plating solution in plating and the industrial processes such as printed board is taken out of, runs, emitting, leaking ground
Rinse and as operated miscarriage causes containing the contents of many kinds of heavy metal ion such as copper, lead, zinc, chromium and certain density organic dirt
Dye thing is produced.And the chelating agent such as EDTA, citric acid is widely used in industries such as plating, which generates steady with metal ions such as nickel, copper
The sequestration thing of stationary state.As the binding ability between ligand is strong, it is difficult to obtain satisfied process using common alkaline chemical precipitation method
Effect so that waste water containing complexing heavy metal becomes typical difficulty in treatment in industrial wastewater, if being directly discharged into water body without process
Very big destruction can be caused to ecological environment.
The processing method of existing complexing heavy metal waste water can be divided mainly into 3 classes：
First, much bigger using more former complex ion complexation constant, the medicament of precipitation can be produced after complexation, forcibly from former network
Metal ion is replaced in ion, generates complex-precipitation to remove removing heavy metals.Concrete grammar includes：(1) sulphide precipitation, forms
The minimum CuS of dissolubility, but presence precipitation granule is little, separate hardly possible, and chance is sour easily to decompose generation H2S gases, form secondary pollution
The problems such as；(2) chelate precipitation：There is chelatropic reaction using chelating agen with heavy metal ion, generate water-insoluble chelating salt,
Add a small amount of organic or inorganic flocculant to form flocculent deposit and separated.But current chelating agen is processed still suffers from cost
Higher problem；(3) iron reduction method：By the use of iron filings, as reducing agent, (pH is 3.0-4.0) carries out electrochemistry in acid condition
The heavy metal ion reduction of complexing heavy metal waste water is separated out the place of heavy metal simple substance for reaction (micro-electrolysis reaction) and displacement reaction
Reason method, the method similar with this principle also have internal electrolysis and Zero-valence Iron Process, but there are iron filings, and produce
Mud amount increases, and increases dehydration burden；(4)FeSO4Method：Principle is based on Cu (NH3)4 2+, the copper complex such as EDTA-Cu with
EDTA-Fe3+Stability constant significant difference (βEDTA-Fe 3+=1.70 × 1024, βEDTA-Cu 2+=5.01 × 1018, βCu(NH3) 2+=
2.09×1013), Fe3+EDTA-Fe can be facilitated3+Combination and by Cu2+Cement out, make copper be changed into free state by complex state,
Major defect is that chemical feeding quantity is big, and sludge output is more.(5) MAP methods：It is particularly directed to cuprammonium water reuse MAP method (application numbers：
201310449645.9), which is by ammonia nitrogen from copper ammonia complexation ion [Cu (NH3)4]2+Middle disengaging, realize cuprammonium contact break close, make copper into
For free copper ion, ammonia nitrogen is with MgNH4PO4Form is precipitated；(6) sour deposition method：Application number：201310069014.4 publication date
" complexing heavy metal method of wastewater treatment " disclosed in September in 2014 10 days is by pH regulator between 2-3, making bivalent cupric ion from network
Separate out in compound.
2nd, the heavy metal in waste water is adsorbed under conditions of its chemical form is not changed and is separated.Concrete grammar
There is (1) absorption method：Refer to using adsorbent huge specific surface area and substantial amounts of surface active groups adsorption cleaning complexation nickel useless
The processing method of water.The active charcoal of conventional adsorbent, zeolite etc..Absorption method major defect needs frequent regeneration and updates absorption
Agent, causes operational management complicated, and operating cost is improved；(2) ion exchange：A kind of by means of handing on ion exchange material
Change ion to swap reaction with identical electrical ion in waste water solution and remove the processing method of harmful ion in water.Conventional
Ion exchange material have humic acid substance, ion exchange resin, xanthate, ion-exchange fibre etc., exist shortcoming for hand over
Change the easy saturation of resin, complex easily makes exchanger resin pollution or aging, the shortcomings of resin regeneration is frequent.
3rd, abolished based on the method for advanced oxidation and precipitated with common heavy metal ion precipitant after chelating agent, had
Body method includes：(1) Fenton methods：Refer to H2O2In Fe2+Catalytic action under, decompose to produce there is very high redox potential
Heavy metal complex can be aoxidized contact break by hydroxyl radical free radical, hydroxyl radical free radical, after contact break heavy metal become free state heavy metal from
Son, similar similar method also include：Ferrate oxidation method, UV/H2O2Method and KMnO4Method, O3Method and sodium-hypochlorite process
(the patent No.：201310430270.1, a kind of processing method containing complexation copper waste water, publication date 1 and 1 day 2014) and electro-catalysis
Method (application number：201510573996.X, electrocatalytic method process the method for copper ammonia complexation waste water, publication date on 2 23rd, 2015)
With electrocoagulation (application number：A kind of 201410347280.3 processing methods of Cu-EDTA complexations waste water and electric flocculation device, public
Open on October 2014 day 1) etc.；(2) photocatalytic oxidation：Its light induced electron or hole isoreactivity using photocatalyst surface
Species, remove removing heavy metals by reduction or oxidation reaction.But the angle from practical application, photocatalytic method also have many
Problem：Such as heavy metal ion the adsorption rate of photocatalyst surface low, photocatalyst light absorption range is narrow etc..
There is the method for generating some according to another domestic and foreign literature report, including (1) microbiological fuel cell method MFC (Zhang
L J,Tao H C,Wei X Y,et al.Bioelectrochemical recovery of ammonia–copper(II)
complexes from wastewater using a dual chamber microbial fuel cell[J]
.Chemosphere,2012,89(10):1177-1182.)；(2) chitosan complex-ceramic membrane coupled method (Zhang Chenmu, Liu Jing
Ocean, Sun Xiaoming, etc. chitosan complex-pottery membrane coupling technique processes low concentration copper-containing wastewater [J]. environmental project journal,
2015,9(1):83-88.；Application number：201410126511.8 a kind of complexation-ceramic membrane coupling processing low concentration copper-containing wastewater skill
Art, publication date on June 4th, 2014) etc..
Complex state heavy metal is than heavy metal wastewater thereby difficult to deal with, for reaching the discharge of wastewater mark of China's continuous improvement
Standard, enterprise employ more complicated technique, increase more processing costs, but are but still unable to the present situation of stably reaching standard, because
The new processing method of this exploitation and technique are particularly important.
Content of the invention
It is an object of the invention to provide a kind of processing method of complexation nickel waste water, the pH of nickel-containing waste water first adjusted, then plus
Enter Fe2O3FeO/GAC catalyst and persulfate, are placed in microwave reactor, are converted into the complexation nickel contact break in the waste water
Free nickel ion and Organic substance, then the pH of the waste water for obtaining is adjusted to 9.2, make the nickel ion in the waste water be converted into nickel hydroxide
Precipitation is separated.
A kind of processing method of complexation nickel waste water that the present invention is provided, comprises the following steps：
1) Fe is prepared2O3FeO/GAC catalyst：
By NH4Fe(SO4)2After cyclohexylamine stirring reaction is added in solution, activated carbon is added, the interior of sealing is placed in together
Reacting by heating in lining teflon stainless steel cauldron, natural cooling, washing are dried, obtain Fe2O3FeO/GAC is catalyzed
Agent；
2) to containing adding step 1 in EDTA and sulphuric acid complexation nickel waste water) Fe for preparing2O3FeO/GAC catalyst, is adjusted
After pH to 3.0-5.0, sodium peroxydisulfate is added, then, stirring reaction in microwave reactor is placed in；
3) and then, adjust waste water system pH to 9.0-9.5, after stirring and evenly mixing, stand cooling precipitation, separate supernatant and heavy
Form sediment, you can.
Further, step 1) described in NH4Fe(SO4)2Solution is now matched somebody with somebody, and concentration is 0.075mol/L；Concrete configuration
Method is：By NH4Fe(SO4)2·12H2O is dissolved in deionized water.
Further, step 1) in NH4Fe(SO4)2NH in solution4Fe(SO4)2, cyclohexylamine and activated carbon amount ratio
For 3mmol：3ml：2-4g.
Described activated carbon is using front through processing：By the granular active carbon GAC of purchase in deionized water, heated and boiled
30-50min, uses ultra-pure water wash clean, is put in 105 DEG C of vacuum drying ovens and is dried overnight；Then 20 mesh sieves are crossed, standby；Described
Grain activated carbon GAC, its parameter be methylene blue adsorptive value >=120mg/g, specific surface area>800m2/g；
Further, step 1) in, after adding cyclohexylamine, the stirring reaction time is 15-25min；Mixing speed is 120r/
min；
Further, step 1) in reactor reacting by heating, specially：150 DEG C of reaction 10-12 hours；
Step 1) in, the washing refers to that deionized water and ethyl alcohol are washed 3-5 time；The drying is referred in vacuum
6h is dried at 60 DEG C in drying baker；
Step 1) the middle Fe for preparing2O3FeO/GAC catalyst, active component content is in terms of the mass ratio that Fe accounts for carrier GAC
Calculate, prepared Fe2O3The mass ratio that Fe accounts for carrier GAC in FeO/GAC catalyst is 2.5-4%；
Step 2) described in containing in EDTA and sulphuric acid complexation nickel waste water, the mol ratio of complexation nickel and total nickel is 45-55:100；
Fe2O3The addition of FeO/GAC catalyst is 4-10g/L；I.e. every liter waste water adds 4-10gFe2O3FeO/GAC catalyst；
Further, step 2) in, the sodium peroxydisulfate of addition is 80-100 with the mol ratio of total nickel in waste water：1；Further
, step 2) in, pH to 3.0-5.0 is adjusted with the HCl solution of 0.1mol/L；
Further, step 2) in, microwave reactor power is 300 350w, and the response time is 40-60min, stirring speed
Rate is 60r/min；
Further, step 3) in, the NaOH solution that mass concentration is 10% is added, waste water system pH to 9.0- is adjusted
9.5.
Step 3) in the sedimentation time be 40-60min.
Method Ni and the clearance of COD that the detection present invention is provided：
Supernatant after by precipitation is filtered with vacuum filtration pumping, and via hole diameter is 0.45um water system membrane filtrations；Take filtrate to exist
3000r/min carries out 5min centrifugations, determines the concentration of the COD and Ni in supernatant；The clearance difference of measurement result Ni
95.4-96.7% can be reached, COD clearances reach 63.2-84.3%；Wherein COD determines (GB/ using potassium dichromate method
71191421989), Ni is determined using atomic absorption spectrophotometry (GB11912-89).
Outwell supernatant, the catalyst 5 times of deionized water clean and reuse repeatedly, then it is placed in 60-70 DEG C of vacuum drying oven
Dry to weight；Amount, the complexation nickel waste water with catalyst is added, is waited a tangent condition identical with previous run, is circulated examination
Test 5 times；The clearance of measurement result Ni can reach 62.5-71.6% respectively；The clearance 43.4-50.2% of COD.
In the present invention, Fe2O3FeO@GAC activation persulfates produce potentiometric titrations (SO4 -) to EDTA-Ni waste water
Contact break reaction key factor in the Innovation Mechanism of the following aspects：
(1) contain NH in granular active carbon porous surface4Fe(SO4)2React with cyclohexylamine generate stable containing active component
The complex of ferrum, the stability of catalyst and recycling number of times are significantly improved；
(2) the abundant oxygen-containing functional group of activated carbon surface especially carboxyl to can be to the efficient activation of sodium peroxydisulfate；
(3)Fe2O3Heterogeneous activation of the active component iron of the complex state in FeO/GAC structures to sodium peroxydisulfate；
(4) Fe in catalyst2O3GAC-Fe produced and micro- dissociation in FeO there is2+The homogeneous activation carried out by sodium peroxydisulfate.
Based on the SO that the effect in terms of (2) (3) (4) quickly produces strong oxidizing property4 -, absorption is made in the network of catalyst surface
The oxidized decomposition of copper is closed, copper ion is discharged (equation that principle sees below) by free, then is gone by adding and subtracting precipitation
Remove.
Compared with prior art, Fe is supported on granular active carbon in the present invention, makes support type Fe2O3·FeO/GAC
Catalyst, heterogeneous activation persulfate system produce the complex state huge sum of money in the potentiometric titrations oxidized waste water of strong oxidizing property
Category, by destroying the rock-steady structure of complex ion, so that heavy metal separate out from complex, uses simple alkaline chemical precipitation
Method removed.The present invention builds Fe2O3FeO/GAC activates persulfate Fourier Series expansion technique, in the treatment of waste water by useless
Water practical situation adjusts the pH value of waste water, you can reach good treatment effect, and catalyst still has preferably after reusing
Catalysis activity, cost for wastewater treatment can be substantially reduced.A lot of equipment investments and operating cost is not needed, convenient operation of drawing materials
Simply.And absorbent charcoal carrier can be reused, and realize resource reutilization, cost-effective.
Specific embodiment
Embodiment 1
A kind of processing method of complexation nickel waste water, comprises the following steps：
1) with commercially available general granular active carbon (crossing 20-40 mesh sieve), its parameter is：Methylene blue adsorptive value >=120mg/
G, specific surface area>800m2/ g, granular active carbon is placed in deionized water, 40min is boiled with heating by electric cooker, uses ultrapure washing
Totally, it is put in 105 DEG C of vacuum drying ovens and is dried overnight；By 3mmolNH4Fe(SO4)2·12H2O is dissolved into the deionized water of 40ml
In, then the cyclohexylamine of 3ml is added dropwise over being stirred vigorously 20 minutes with 120r/min, and then colloidal mixture and 2g cross 20 mesh sieves
Activated carbon mixing add in the ptfe autoclave of 60ml, cool down under room temperature after 12 hours in 150 DEG C of reactions.Last sample
Deionized water and washing with alcohol 5 times, dry 6h at 60 DEG C, prepared experiment Fe in vacuum drying oven2O3FeO/GAC is urged
Agent (it is 2.6% that Fe accounts for the mass ratio of carrier GAC)；
2) 50mL nickel-containing waste waters, wherein n are takenComplexation nickel：nTotal nickelFor 45:100, add catalyst and be added in nickel-containing waste water,
Fe2O3FeO/GAC catalyst amountses are 8g/L, are adjusted after pH to 3.0, according to n with the HCl solution of 0.1mol/LNi：
nSodium peroxydisulfate=1：After 80 add sodium peroxydisulfate, reaction tube is placed in microwave reactions of the power 300w with stir speed (S.S.) as 60r/min
In device, react to the 40min times；
3) take filtrate and pH to 9.0 is adjusted with the sodium hydroxide solution of 0.1mol/L, staticly settle 40min completely, use aperture
For 0.45um water system membrane filtrations；Taking filtrate carries out 5min centrifugations in 3000r/min, determines COD and Ni in supernatant
Concentration, the clearance of measurement result Ni and COD can reach 94.7% and 66.4% respectively, and wherein Ni and COD are respectively adopted original
Sub- absorptiometry and potassium dichromate method and measure (GB/71191421989), outwell supernatant, and deionized water is repeatedly
The catalyst of clean and reuse 5 times, then be placed in 60-70 DEG C of vacuum drying oven and dry to weight；Add amount, the complexation nickel with catalyst
Waste water, waits a tangent condition identical with previous run, is circulated test 3 times；The clearance difference energy of measurement result Ni and COD
Reach 67.1% and 48.3%；
Embodiment 2
A kind of processing method of complexation nickel waste water, comprises the following steps：
1) with commercially available general granular active carbon (crossing 20-40 mesh sieve), its parameter is methylene blue adsorptive value >=120mg/g
Specific surface area>800m2Granular active carbon heating by electric cooker is boiled 40min by/g, uses ultra-pure water wash clean, is put in 105 DEG C of vacuum
It is dried overnight in baking oven；By 3mmol NH4Fe(SO4)2·12H2O is dissolved in the deionized water of 50ml, then the hexamethylene of 3ml
Amine is added dropwise over being stirred vigorously 25 minutes, and then colloidal mixture and 2g cross the activated carbon mixing of 20 mesh sieves, adds that 60ml's is poly-
In tetrafluoroethene reactor, cool down under room temperature after reacting 10 hours at 150 DEG C.Last sample deionized water and washing with alcohol 4 times,
6h is dried at 60 DEG C in vacuum drying oven, prepared experiment Fe2O3FeO/GAC catalyst, (Fe accounts for the mass ratio of carrier GAC
For 2.92%)；
2) 25mL nickel-containing waste waters, wherein n are takenComplexation nickel：nTotal nickelFor 55:100, add catalyst and be added in nickel-containing waste water,
Fe2O3FeO/GAC catalyst amountses are 6.0g/L, after adjusting pH to 4.0, according to nNi：nSodium peroxydisulfate=1：70 add persulfuric acid
Magnetic agitation is carried out after sodium, reaction tube is placed in the microwave reactor of power 350w, react to the 45min times；
3) take filtrate and pH to 9.0 is adjusted with the sodium hydroxide solution of 0.1mol/L, stand cooling precipitation 60min, in separation
Clear liquid, is 0.45um water system membrane filtrations with aperture, and taking filtrate carries out 5min centrifugations in 3000r/min, determines supernatant
In COD and Ni concentration, the clearance of measurement result Ni and COD can reach 96.5% and 63.8% respectively, wherein Ni and COD
Atomic absorption spectrophotometry and potassium dichromate method and measure (GB/71191421989) is respectively adopted, supernatant is outwelled, is spent
The catalyst 5 times of ionized water clean and reuse repeatedly, then be placed in 60-70 DEG C of vacuum drying oven and dry to weight；Add and catalyst
Amount, complexation nickel waste water, wait a tangent condition identical with previous run, be circulated test 3 times；Measurement result Ni and COD's
Clearance can reach 61.5% and 43.6% respectively.
Claims (10)
1. a kind of processing method of complexation nickel waste water, it is characterised in that the treating method comprises following steps：
1) Fe is prepared2O3FeO/GAC catalyst：
By NH4Fe(SO4)2After cyclohexylamine stirring reaction is added in solution, activated carbon is added, the liner for being placed in sealing together gathers
Reacting by heating in tetrafluoroethene stainless steel cauldron, natural cooling, washing are dried, obtain Fe2O3FeO/GAC catalyst；
2) to containing adding step 1 in EDTA and sulphuric acid complexation nickel waste water) Fe for preparing2O3FeO/GAC catalyst, adjust pH to
After 3.0-5.0, sodium peroxydisulfate is added, then, stirring reaction in microwave reactor is placed in；
3) and then, adjust waste water system pH to 9.0-9.5, after stirring and evenly mixing, stand cooling precipitation, separate supernatant and precipitation,
?.
2. the processing method of complexation nickel waste water according to claim 1, it is characterised in that step 1) in NH4Fe(SO4)2Molten
NH in liquid4Fe(SO4)2, cyclohexylamine and activated carbon amount ratio be 3mmol：3ml：2-4g.
3. the processing method of complexation nickel waste water according to claim 1 and 2, it is characterised in that step 1) described in NH4Fe
(SO4)2Solution is now matched somebody with somebody, and concentration is 0.075mol/L.
4. the processing method of complexation nickel waste water according to claim 1, it is characterised in that step 1) described in activated carbon
Using front through processing：By the granular active carbon GAC of purchase in deionized water, heated and boiled 30-50min uses ultrapure washing
Totally, it is put in 105 DEG C of vacuum drying ovens and is dried overnight；Then 20 mesh sieves are crossed, standby.
5. the processing method of complexation nickel waste water according to claim 1 and 2, it is characterised in that step 1) in reactor
Middle reacting by heating, specially：150 DEG C of reaction 10-12 hours.
6. the processing method of complexation nickel waste water according to claim 1 and 2, it is characterised in that prepared Fe2O3·
The mass ratio that Fe accounts for carrier GAC in FeO/GAC catalyst is 2.5-4%.
7. the processing method of complexation nickel waste water according to claim 1 and 2, it is characterised in that step 2) described in contain
In EDTA and sulphuric acid complexation nickel waste water, the mol ratio of complexation nickel and total nickel is 45-55:100.
8. the processing method of complexation nickel waste water according to claim 1 and 2, it is characterised in that step 2) in Fe2O3·
The addition of FeO/GAC catalyst is 4-10g/L.
9. the processing method of complexation nickel waste water according to claim 1 and 2, it is characterised in that the sodium peroxydisulfate of addition with
In waste water, the mol ratio of total nickel is 80-100：1.
10. the processing method of complexation nickel waste water according to claim 1 and 2, it is characterised in that step 2) in, microwave is anti-
Answer device power for 300 350w, the response time is 40-60min, and stir speed (S.S.) is 60r/min.
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| CN107487890A (en) * | 2017-08-21 | 2017-12-19 | 武汉和尔环保科技有限公司 | A kind of method using persulfate and active carbon purifying sewage |
| CN107601750A (en) * | 2017-10-16 | 2018-01-19 | 赵秀波 | A kind of processing equipment of nickel cobalt waste water |
| CN108178370A (en) * | 2017-12-28 | 2018-06-19 | 华南农业大学 | The advanced oxidation that a kind of persulfate and catalysis haydite participate in abolishes the method containing nickel complex |
| CN109761401A (en) * | 2019-03-12 | 2019-05-17 | 江苏中电创新环境科技有限公司 | A kind for the treatment of process of the strong complexing heavy metal waste water of EDTA class |
| CN110272085A (en) * | 2019-07-30 | 2019-09-24 | 江南大学 | A kind of modified cyanobacteria biology carbon composite and the application in processing electroplating wastewater |
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| CN111203177A (en) * | 2020-01-10 | 2020-05-29 | 淮阴师范学院 | Efficient treatment method of EDTA-Pb wastewater |
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| CN112337439B (en) * | 2020-11-06 | 2023-02-17 | 江西挺进环保科技股份有限公司 | Rare earth chelate and phosphorus adsorbent for adsorbing phosphorus element in wastewater |
| CN112875825A (en) * | 2021-01-25 | 2021-06-01 | 南昌航空大学 | Method for treating chemical nickel plating wastewater containing high concentration straight-chain carboxylic acid as organic ligand by using ferrate |
| CN112978983B (en) * | 2021-02-05 | 2022-04-19 | 中南林业科技大学 | Iron-based biochar-based heavy metal complexing wastewater treatment and recycling process thereof |
| CN112978983A (en) * | 2021-02-05 | 2021-06-18 | 中南林业科技大学 | Iron-based biochar-based heavy metal complexing wastewater treatment and recycling process thereof |
| CN113149290A (en) * | 2021-05-24 | 2021-07-23 | 日彩电子科技(深圳)有限公司 | Treatment method of copper-containing printing ink wastewater |
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