CN109422332A - Treating Electroplate Wastewater Containing Nickel processing method - Google Patents
Treating Electroplate Wastewater Containing Nickel processing method Download PDFInfo
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- CN109422332A CN109422332A CN201710717091.4A CN201710717091A CN109422332A CN 109422332 A CN109422332 A CN 109422332A CN 201710717091 A CN201710717091 A CN 201710717091A CN 109422332 A CN109422332 A CN 109422332A
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- containing nickel
- wastewater containing
- electrolysis
- treating electroplate
- processing method
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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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
- C02F2201/4619—Supplying gas to the electrolyte
-
- 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
- C02F2305/026—Fenton's reagent
Abstract
The present invention provides a kind of Treating Electroplate Wastewater Containing Nickel processing method, include the following steps: to collect Treating Electroplate Wastewater Containing Nickel, there is provided tubular type three-dimensional electric Fenton device, the three-dimensional electric Fenton device of the tubular type includes tube type electrolytic tank, the power supply device for powering to the tube type electrolytic tank and the sedimentation basin for desilting the processed wastewater sedimentation of the tube type electrolytic tank, the tube type electrolytic tank includes multiple series connection and end to end electrolyzer unit, and the electrolyzer unit includes electrolysis slot cavity body, anode bodies, cathode and aerator；The Treating Electroplate Wastewater Containing Nickel is passed through in the tube type electrolytic tank and carries out electrolysis and handles to obtain electrolysis wastewater；The electrolysis wastewater is passed through described sink and determines precipitation process in pond.When this method passes through the direct electrochemistry redox of electrode, the indirect oxidation reduction for the active material that electrode generates and the high current spatiotemporal efficiency of three-dimensional system can intensive treatment waste water effects.
Description
Technical field
The invention belongs to electroplating waste water treatment technology fields, are to be related to a kind of Treating Electroplate Wastewater Containing Nickel processing more specifically
Method.
Background technique
Electroplating industry becomes one of whole world three greatly pollution industry, is heavy metal wastewater thereby (comprising nickel, tin, iron, chromium, copper, gold etc.
Ten is several) major sources head, electroplating industry is modernization industry and the indispensable a part of economic development, waste water row
High-volume big and harmfulness seriously also can not be ignored, and electroplating wastewater has good water solubility, stable structure, difficult for biological degradation, ingredient multiple
Miscellaneous equal harm.Currently, the pollution rate of heavy metal has reached 80.1% in China's river,lake and reservior bed mud, the Changjiang river, the Yellow River, preserved egg
The water quality of the heavy metals exceeding standard section in the basins such as river, the Zhujiang River is to surpass V class.The governing problem of heavy metal wastewater thereby has become environmental protection
Field focus of attention.
The major technique and method for handling Treating Electroplate Wastewater Containing Nickel mainly have: (1) chemical precipitation method, using ferrous sulfate, again
Metal traps；(2) ion exchange is carried out using anion exchange resin；(3) electrochemical reducing；(4) ferrite process；(5)
Absorption method；(6) membrane separation process etc..The above method or pollutant kind is single, complex process, capital cost there is processing
With high problem or need to add excess chemical medicament, sludge quantity big, and then leads to the problem of secondary pollution；In short, these sides
Method treated plating shipwreck to reach discharge standard.
Summary of the invention
It is an object of the invention to overcome the above-mentioned deficiency of the prior art, a kind of Treating Electroplate Wastewater Containing Nickel processing method is provided,
Aim to solve the problem that complex process, technical problem at high cost and undesirable treatment effect when existing method handles Treating Electroplate Wastewater Containing Nickel.
For achieving the above object, The technical solution adopted by the invention is as follows:
The present invention provides a kind of Treating Electroplate Wastewater Containing Nickel processing method, includes the following steps:
Treating Electroplate Wastewater Containing Nickel is collected, provides tubular type three-dimensional electric Fenton device；Wherein, the three-dimensional electric Fenton device packet of the tubular type
Include tube type electrolytic tank, the power supply device for powering to the tube type electrolytic tank and tube type electrolytic tank is processed
The sedimentation basin that wastewater sedimentation desilts, the tube type electrolytic tank include multiple series connection and end to end electrolyzer unit, the electricity
Solving slot unit includes electrolysis slot cavity body, anode bodies, cathode and aerator；The electrolysis slot cavity body includes two closure
Part and the cylinder for being cylindrical in shape setting, two closeouts are plugged in the both ends of the cylinder respectively, and the cylinder offers company
Lead to inside and outside water inlet and water outlet；The anode bodies are attached at the inner wall of the cylinder；The cathode includes set on described
Electrolysis slot cavity body in and be enclosed by reticular structure insulation strainer, be placed in it is described insulate strainer in active carbon particle, with
And the cathode inner core of the insulation strainer is passed through with active carbon particle electric connection and at least one end；The aerator is set
In the water inlet；
The Treating Electroplate Wastewater Containing Nickel is passed through in the tube type electrolytic tank and carries out electrolysis and handles to obtain electrolysis wastewater；
The electrolysis wastewater is passed through described sink and determines precipitation process in pond.
Treating Electroplate Wastewater Containing Nickel processing method provided by the invention handles nickeliferous plating using three-diemsnional electrode electro-fenton process principle
Waste water, by the Treating Electroplate Wastewater Containing Nickel being collected into be passed through in the tube type electrolytic tank of the three-dimensional electric Fenton device of the distinctive tubular type of the present invention into
Row electrolysis, the hydroxyl radical free radical and electro-redox of the nascent state that electrocatalytic oxidation generates in reaction process are by the organic network of macromolecular
The effects of closing object and be decomposed into small molecule organic complex, integrating redox, catalysis oxidation, complexing and deposition, it is three-dimensional
The H that cathode 112 is generated by two-electron reduction reaction2O2With Fe2+Fenton's reaction occurs and generates oxidizing species hydroxyl certainly
By base, enable the rapid contact break of complex state nickel in nickel-containing waste water, when by the direct electrochemistry redox of electrode, electrode is produced
Raw active material ([H] and Fe2+, OH and H2O2Deng) indirect oxidation reduction and three-dimensional system high current space-time effect
Rate, can intensive treatment waste water effect.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the structural schematic diagram for the three-dimensional electric Fenton device of tubular type that the embodiment of the present invention 1 provides；
The section structural representation of electrolyzer unit in the electric Fenton device of tubular type three-dimensional that Fig. 2 provides for the embodiment of the present invention 1
Figure；
Wherein, each appended drawing reference in figure:
1: tube type electrolytic tank；
2: power supply device；
3: heavy to determine pond；
11: electrolyzer unit；
111: electrolysis slot cavity body；
112: cathode；
113: anode bodies；
114: aerator；
1111: closeouts；
1112: cylinder；
1121: insulation strainer；
1122: active carbon particle；
1123: cathode inner core；
11121: water inlet；
11122: water outlet.
Specific embodiment
In order to which technical problems, technical solutions and advantageous effects to be solved by the present invention are more clearly understood, below in conjunction with
Embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to explain
The present invention is not intended to limit the present invention.
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
It should be noted that it can be directly another when element is referred to as " being fixed on " or " being set to " another element
On one element or indirectly on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
It is to be appreciated that term " length ", " width ", "upper", "lower", "front", "rear", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" "inner", "outside" is that orientation based on the figure or position are closed
System, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
Specific orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, " several or multiple " are meant that two or two
More than a, unless otherwise specifically defined.
Also referring to Fig. 1 and Fig. 2, now to distinctive tubular type three used in Treating Electroplate Wastewater Containing Nickel processing method of the present invention
Electric Fenton device is tieed up to be illustrated.The three-dimensional electric Fenton device of the tubular type, including tube type electrolytic tank 1, for giving tube type electrolytic tank 2 to supply
The power supply device 2 of electricity and the sedimentation basin 3 for desilting the processed wastewater sedimentation of tube type electrolytic tank 1, tube type electrolytic tank 1 include
Multiple series connection and end to end electrolyzer unit 11, electrolyzer unit 11 include electrolysis slot cavity body 111, anode bodies 113, yin
Polar body 112 and aerator 114；Wherein, electrolysis slot cavity body 111 includes two closeouts 1111 and is cylindrical in shape setting
Cylinder 1112, two closeouts 1111 are plugged in the both ends of cylinder 1112 respectively, and cylinder 1112 offers the inside and outside water inlet of connection
11121 and water outlet 11122；Anode bodies 113 are attached at the inner wall of cylinder 1112；Cathode 112 includes being set to electrolysis slot cavity body
The insulation strainer 1121 that is enclosed in 111 and by reticular structure, be placed in the active carbon particle 1122 to insulate in strainer 1121, with
And the cathode inner core 1123 for the strainer 1121 that insulate is passed through with the electric connection of active carbon particle 1122 and at least one end；Aerator
114 are set at water inlet 1121.
The three-dimensional electric Fenton apparatus structure of distinctive tubular type used in Treating Electroplate Wastewater Containing Nickel processing method of the present invention is simple, main
By tube type electrolytic tank 1, power supply device 2 and heavy to determine pond 3 and form.Tube type electrolytic tank 1 includes multiple series connection and end to end electricity
Slot unit 11 is solved, the quantity of series connection electrolysis slot unit 11 can be flexibly adjusted, it is applied widely, big yield and highly concentrated can be born
Spend the impact of waste water.The reaction dominant mechanism of the device is to generate the effect of strong oxidizing property hydroxyl radical free radical, passes through electrocatalytic oxidation
Change the joint with electro-redox technology, the three-dimensional for thering are anode bodies 113, active carbon particle 1122 to fill inside electrolyzer unit 11
Cathode 112, and cathode 112 can expand the electrocatalytic oxidation effective area of cathode, electrolytic efficiency be improved, for big portion
Divide organic pollutant that can access effective removal；High treating effect, removal efficiency can reach 95% or more, for flood
Amount and high-concentration waste water can adjust hydraulic detention time with multiple means, to stablize treated effluent quality.In addition,
The device convenient operating maintenance can remove single electrolyzer unit 11 in tube type electrolytic tank 1, have no effect on when something goes wrong
Anode bodies 113 and cathode 112 dismantling of whole operation work, electrolyzer unit 11 are easy, when active carbon particle 1122 is long
Time is quick, simple using replacement when inactivating.
Specifically, electrolytic cell 1 includes multiple series connection and end to end electrolyzer unit 11.Electrolyzer unit 11 includes
Electrolysis slot cavity body 111, the cathode 112 being placed in electrolysis slot cavity body 111 and the anode being arranged on electrolysis slot cavity body 111
Body 113.Electrolysis slot cavity body 111 includes two closeouts 1111 and the cylinder 1112 for being cylindrical in shape setting, and two closeouts 1111 are divided
It is not plugged in the both ends of cylinder 1112, cylinder 1112 offers the inside and outside water inlet 11121 and water outlet 11122 of connection.Electrolysis
Space between slot cavity body 111 and anode bodies 113 forms electrolytic cell, and waste liquid can be through the water inlet of an electrolyzer unit 11
11121 flow into, and flow through after electrolytic cell is electrochemically reacted, flow out through water outlet 11122, into latter electrolyzer unit 11
Water inlet 11121.In the embodiment of the present invention, the water outlet 11122 and the latter electrolyzer unit of previous electrolyzer unit 11
11 water inlet 11121 can be communicated directly, and the two can also be connected to by connecting pipe.In the embodiment of the present invention, anode bodies
113 are attached at the inner wall 1112 of cylinder.Further, the anode bodies are graphite anode；The cathode inner core is graphite inner core.
Preferably, in a tubular form, i.e., anode bodies 113 are tubular anode to anode bodies 113.It is further preferred that in cathode in cathode 112
Core 1123 is in the shape of a rod, to have preferable electron supplying capacity, electrolysis effectiveness can be improved.
Further, a kind of specific embodiment as the three-dimensional electric Fenton device of tubular type provided by the invention, water inlet
11121 and water outlet 11122 be respectively adjacent to two closeouts 1111 setting so that waste water carries out electricity in tube type electrolytic tank 1
The path longest of chemistry is conducive to improve electrolysis effectiveness.
Further, a kind of specific embodiment as the three-dimensional electric Fenton device of tubular type provided by the invention, aeration dress
Setting 114 includes aeration tube (figure does not mark) and air compressor machine (figure does not mark), wherein aeration tube is positioned adjacent to water inlet 11121
Closeouts inner wall.Aerator 114 installs one end of water inlet 11121, consistent with water (flow) direction, not only acts as useless to electrolysis
The effect of liquid oxygenation, and the case where play the role of plug-flow, increase the flowing of electrolysis waste solution and prevent dead angle.
Further, a kind of specific embodiment as the three-dimensional electric Fenton device of tubular type provided by the invention, power supply dress
It sets 2 and inverts power supply for polarity.When the current reversal that polarity reversion power supply provides, lead to the anode and cathode hair of three-dimensional electric Fenton device
Raw transformation, three-dimensional active carbon particle are precipitated the nickel ion of free state in cathode, are precipitated at this time on the activated carbon as anode
Metallic nickel and a small amount of iron can dissolve out, solve that active carbon is hardened, H2O2What formation efficiency reduction, hydraulic resistance increased asks
Topic.
Further, a kind of specific embodiment as the three-dimensional electric Fenton device of tubular type provided by the invention, the electricity
The quantity for solving slot unit is 2-10.The present invention can adjust waste water by the quantity of regulating electrolytic tank unit 11 and be electrolysed in tubular type
The tune stream time in slot 1, it is preferred that the quantity of electrolyzer unit 11 is 2-10.Specifically, the quantity of electrolyzer unit 11 can
Think 2,3,4,5,6,7,8,9,10.
Further, a kind of specific embodiment as the three-dimensional electric Fenton device of tubular type provided by the invention, in cathode
The both ends of core 112 pass through insulation strainer 1121.Cathode 112 can pass through the cathode inner core 1123 across insulation strainer 1121
Both ends are fixedly connected on electrolysis slot cavity body 111, are fixedly connected with mode and are not limited clearly, including but not limited to bolt is fixed.
Specific preferred, the both ends of cathode inner core 1123 are respectively fixedly connected in two closeouts 1111 of electrolysis slot cavity body 111, cathode
The volume of body 112 accounts for the 70%-80% of 11 cavity volume of electrolyzer unit.Wherein, the pore size of insulation strainer 1121 is 2-
4mm, length 700mm, diameter 55mm.Anode bodies 113 are graphite-pipe, caliber 60mm, length 700mm.Further,
The diameter of active carbon particle 1122 is 5-10mm, and is activated using preceding with the nitric acid of 0.2mol/L, such electrolysis effectiveness
More preferably.
The embodiment of the present invention provides a kind of Treating Electroplate Wastewater Containing Nickel processing method, includes the following steps:
S01: collecting Treating Electroplate Wastewater Containing Nickel, provides the distinctive tubular type of aforementioned present invention three-dimensional electric Fenton device；
S02: it will be electrolysed in tube type electrolytic tank that above-mentioned Treating Electroplate Wastewater Containing Nickel is passed through in the three-dimensional electric Fenton device of tubular type
Handle to obtain electrolysis wastewater；
S03: electrolysis wastewater is passed through to sink and determines precipitation process in pond.
Chemical nickel plating mainly passes through the surface that ionic state nickel is deposited on plating piece by chemistry redox, common chemical nickel plating
Technique has Ni, P alloy and Ni, B alloy, due to that can use many complexing agents (such as hydroxyacetic acid (ethyl alcohol in nickel chemical plating technology
Acid), amion acetic acid) Lai Zengjia plating piece is glossy, more complexing agent and heavy metal complex can be contained in the waste water generated, because
This waste component is more complicated and difficult is handled by the simple chemisorption precipitation method.Nickeliferous plating provided by the invention is useless
Method for treating water handles Treating Electroplate Wastewater Containing Nickel using three-diemsnional electrode electro-fenton process principle, the Treating Electroplate Wastewater Containing Nickel being collected into is led to
Enter and be electrolysed in the tube type electrolytic tank of the three-dimensional electric Fenton device of the distinctive tubular type of the present invention, electrocatalytic oxidation produces in reaction process
Macromolecular organic complex is decomposed into small molecule organic complex by the hydroxyl radical free radical and electro-redox of raw nascent state, collection
The effects of redox, catalysis oxidation, complexing and deposition, is integrated, and three-dimensional cathode 112 is reacted by two-electron reduction gives birth to
At H2O2With Fe2+Fenton's reaction occurs and generates oxidizing species hydroxyl radical free radical, enables the complex state nickel in nickel-containing waste water
Enough rapid contact breaks, when by the direct electrochemistry redox of electrode, active material ([H] and Fe that electrode generates2+, OH and
H2O2Deng) indirect oxidation reduction and three-dimensional system high current spatiotemporal efficiency, can intensive treatment waste water effect.
Preferably, in above-mentioned steps S02, electrolytic process that tube type electrolytic tank carries out are as follows: electric field DC voltage is
5-15V, current strength 7.5-22.5A, hydraulic detention time 40-60min.
In electrolysis processing reaction process, the hydroxyl radical free radical and electro-redox for the nascent state that electrocatalytic oxidation generates will be big
The effects of molecule organic complex is decomposed into small molecule organic complex, collects redox, catalysis oxidation, complexing and deposition is one
Body.Under the Parameter Conditions of the electrolytic process, the effect for being electrolysed processing is best.
Preferably, in above-mentioned steps S02, during electrolysis is handled, it is 0.4-0.8g/ that concentration is added into electrolytic cell
The ferrous sulfate (liquid volume is based on every liter of nickel-containing waste water) of L, and aerator control air water volume ratio be (1:2)-(2:
1).The H that three-dimensional cathode in electrolytic cell is generated by two-electron reduction reaction2O2With Fe2+Fenton's reaction occurs and generates strong oxygen
The property changed substance hydroxyl radical free radical, enables the rapid contact break of complex state nickel in nickel-containing waste water, and further alkaline chemical precipitation removes nickel.
Preferably, in above-mentioned steps S03, the heavy precipitation process process for determining pond are as follows: by the pH of the electrolysis wastewater
Value is adjusted to 10-10.5, then precipitates 2-2.5h.The heavy inclined-plate clarifying basin determined pond and select routine, in the parameter item of the precipitation process
Under part, sedimentation effect is best, final supernatant discharge after precipitation process, and sludge is sunken in the sludge sump for determining pond bottom of pond,
Centralized collection processing.
In short, Treating Electroplate Wastewater Containing Nickel processing method provided in an embodiment of the present invention, operates more simple, the activity after activation
Charcoal particle strengthens oxygen in the contact area and H of cathode directly as dispenser cathode2O2Formation efficiency；Polarity reversion simultaneously
When power supply provides applied current for reaction, it can effectively solve the problem that the nickel ion of free state is precipitated in cathode, can avoid active carbon
The hardened, H of grain2O2The problem of formation efficiency reduces, hydraulic resistance increases.
The present invention successively carried out test of many times, and it is further detailed as reference pair invention progress now to lift A partial experiment result
Thin description, is described in detail combined with specific embodiments below.
Embodiment 1
The three-dimensional electric Fenton device of tubular type, including tube type electrolytic tank 1, the power supply device 2 for powering to tube type electrolytic tank 2,
And the sedimentation basin 3 for desilting the processed wastewater sedimentation of tube type electrolytic tank 1, tube type electrolytic tank 1 include multiple series connection and head and the tail
Connected electrolyzer unit 11, electrolyzer unit 11 include electrolysis slot cavity body 111, anode bodies 113, cathode 112 and aeration
Device 114；Wherein, electrolysis slot cavity body 111 includes two closeouts 1111 and the cylinder 1112 for being cylindrical in shape setting, two closeouts
1111 are plugged in the both ends of cylinder 1112 respectively, and cylinder 1112 offers the inside and outside water inlet 11121 and water outlet of connection
11122；Anode bodies 113 are attached at the inner wall of cylinder 1112；Cathode 112 includes being set in electrolysis slot cavity body 111 and by netted
Insulation strainer 1121 that structure is enclosed, the active carbon particle 1122 being placed in insulation strainer 1121 and with active carbon
The cathode inner core 1123 that grain 1122 is electrically connected and at least one end passes through insulation strainer 1121；Aerator 114 is set to water inlet
At 1121.
Wherein, the diameter of active carbon particle 1122 is 5-10mm, and pretreatment is first passed through before use: using the nitre of 0.2mol/L
Acid is activated；And the volume of cathode 112 accounts for the 85% of 11 cavity volume of electrolyzer unit；The hole of insulation strainer 1121
Diameter is distributed as 3mm, length 700mm, diameter 55mm；Anode bodies 113 are graphite anode, in a tubular form, the caliber of graphite anode
For 60mm, length 700mm；Cathode inner core 1123 is graphite inner core, in the shape of a rod.
Embodiment 2
A kind of Treating Electroplate Wastewater Containing Nickel processing method, includes the following steps:
S21: collecting Treating Electroplate Wastewater Containing Nickel, provides the three-dimensional electric Fenton device of tubular type of above-described embodiment 1；
Wherein, in the Treating Electroplate Wastewater Containing Nickel: NiAlways=190mg/L, NiComplexing=10.9mg/L, pH=5.7.
S22: above-mentioned Treating Electroplate Wastewater Containing Nickel is passed through progress electricity in the tube type electrolytic tank in the three-dimensional electric Fenton device of the tubular type
Solution handles to obtain electrolysis wastewater；
Electrolytic process are as follows: additional power source provides polarity reversal voltage 5V, and reversion is than being 20:1, corresponding current strength
For 7.5A, hydraulic detention time 60 minutes, ferrous sulfate dosage was 0.4g/L, and air compressor machine controls aeration tube aeration, air water body
Product is than being 1:2.
S23: electrolysis wastewater is passed through to sink and determines precipitation process in pond；
Precipitation process process are as follows: obtained electrolysis wastewater is added alkali and adjusts pH value to 10~10.5, into inclined-plate clarifying basin,
Supernatant is discharged after precipitating 2 hours, and sludge is sunken to pool bottom sludge slot.
After handling chemical Treating Electroplate Wastewater Containing Nickel with the present embodiment 4, finally obtained supernatant uses aas determination
Nickel ion concentration, measuring nickel concentration in supernatant after processing is NiComplexing=1.5mg/L, contact break rate are 86.2%.At calculating
Power consumption and cost of drugs required for unit volume chemistry Treating Electroplate Wastewater Containing Nickel are managed, obtains operating cost: 1.55 yuan/m3。
Embodiment 3
A kind of Treating Electroplate Wastewater Containing Nickel processing method, includes the following steps:
S31: collecting Treating Electroplate Wastewater Containing Nickel, provides the three-dimensional electric Fenton device of tubular type of above-described embodiment 1；
Wherein, in the Treating Electroplate Wastewater Containing Nickel: NiAlways=223mg/L, NiComplexing=12.1mg/L, pH=5.8.
S32: above-mentioned Treating Electroplate Wastewater Containing Nickel is passed through progress electricity in the tube type electrolytic tank in the three-dimensional electric Fenton device of the tubular type
Solution handles to obtain electrolysis wastewater；
Electrolytic process are as follows: polarity inverts supplies voltages 10V, and reversion ratio is 20:1, and corresponding current strength is
15A, hydraulic detention time 40 minutes, ferrous sulfate dosage was 0.6g/L, and air compressor machine controls aeration tube aeration, air water volume ratio
For 1:1.
S33: electrolysis wastewater is passed through to sink and determines precipitation process in pond；
Precipitation process process are as follows: obtained electrolysis wastewater is added alkali and adjusts pH value to 10~10.5, into inclined-plate clarifying basin,
Supernatant is discharged after precipitating 2 hours, and sludge is sunken to pool bottom sludge slot.
After handling chemical Treating Electroplate Wastewater Containing Nickel with the present embodiment 3, finally obtained supernatant uses aas determination
Nickel ion concentration, measuring nickel concentration in supernatant after processing is NiComplexing=0.9mg/L, contact break rate are 92.3%.At calculating
Power consumption and cost of drugs required for unit volume chemistry Treating Electroplate Wastewater Containing Nickel are managed, obtains operating cost: 1.81 yuan/m3。
Embodiment 4
A kind of Treating Electroplate Wastewater Containing Nickel processing method, includes the following steps:
S41: collecting Treating Electroplate Wastewater Containing Nickel, provides the three-dimensional electric Fenton device of tubular type of above-described embodiment 1；
Wherein, in the Treating Electroplate Wastewater Containing Nickel: NiAlways=210mg/L, NiComplexing=11.7mg/L, pH=5.1.
S42: above-mentioned Treating Electroplate Wastewater Containing Nickel is passed through progress electricity in the tube type electrolytic tank in the three-dimensional electric Fenton device of the tubular type
Solution handles to obtain electrolysis wastewater；
Electrolytic process are as follows: polarity inverts supplies voltages 15V, and reversion ratio is 20:1, and corresponding current strength is
22.5A, hydraulic detention time 50 minutes, ferrous sulfate dosage was 0.8g/L, and air compressor machine controls aeration tube aeration, air water volume
Than for 2:1.
S43: electrolysis wastewater is passed through to sink and determines precipitation process in pond；
Precipitation process process are as follows: obtained electrolysis wastewater is added alkali and adjusts pH value to 10~10.5, into inclined-plate clarifying basin,
Supernatant is discharged after precipitating 2 hours, and sludge is sunken to pool bottom sludge slot.
After handling chemical Treating Electroplate Wastewater Containing Nickel with the present embodiment 4, finally obtained supernatant uses aas determination
Nickel ion concentration, measuring nickel concentration in supernatant after processing is NiComplexing=0.5mg/L, contact break rate are 95.7%.At calculating
Power consumption and cost of drugs required for unit volume chemistry Treating Electroplate Wastewater Containing Nickel are managed, obtains operating cost: 2.21 yuan/m3。
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of Treating Electroplate Wastewater Containing Nickel processing method, which comprises the steps of:
Treating Electroplate Wastewater Containing Nickel is collected, provides tubular type three-dimensional electric Fenton device；Wherein, the three-dimensional electric Fenton device of the tubular type includes pipe
Formula electrolytic cell, the power supply device for powering to the tube type electrolytic tank and by the processed waste water of the tube type electrolytic tank
The sedimentation basin desilted is precipitated, the tube type electrolytic tank includes multiple series connection and end to end electrolyzer unit, the electrolytic cell
Unit includes electrolysis slot cavity body, anode bodies, cathode and aerator；The electrolysis slot cavity body include two closeouts with
And it is cylindrical in shape the cylinder of setting, two closeouts are plugged in the both ends of the cylinder respectively, and the cylinder offers in connection
Outer water inlet and water outlet；The anode bodies are attached at the inner wall of the cylinder；The cathode includes being set to the electrolysis
The insulation strainer being enclosed in slot cavity body and by reticular structure, the active carbon particle, the Yi Jiyu that are placed in the insulation strainer
The cathode inner core that the active carbon particle is electrically connected and at least one end passes through the insulation strainer；The aerator is set to institute
State water inlet；
The Treating Electroplate Wastewater Containing Nickel is passed through in the tube type electrolytic tank and carries out electrolysis and handles to obtain electrolysis wastewater；
The electrolysis wastewater is passed through described sink and determines precipitation process in pond.
2. Treating Electroplate Wastewater Containing Nickel processing method as described in claim 1, which is characterized in that the electricity that the tube type electrolytic tank carries out
Solve treatment process are as follows: electric field DC voltage is 5-15V, current strength 7.5-22.5A, hydraulic detention time 40-60min.
3. Treating Electroplate Wastewater Containing Nickel processing method as claimed in claim 2, which is characterized in that during the electrolysis processing,
The ferrous sulfate that concentration is 0.4-0.8g/L is added into the electrolytic cell, and the air water volume ratio of aerator control is
(1:2)-(2:1)。
4. Treating Electroplate Wastewater Containing Nickel processing method as described in claim 1, which is characterized in that the heavy precipitation process mistake for determining pond
Journey are as follows: the pH value of the electrolysis wastewater is adjusted to 10-10.5, then precipitates 2-2.5h.
5. Treating Electroplate Wastewater Containing Nickel processing method according to any one of claims 1-4, which is characterized in that the water inlet and institute
It states water outlet and is respectively adjacent to the two closeouts settings.
6. such as the Treating Electroplate Wastewater Containing Nickel processing method of any one of claim 1-4, it is characterised in that described, the aerator packet
Aeration tube and air compressor machine are included, and the aeration tube is positioned adjacent to the closeouts inner wall of the water inlet.
7. Treating Electroplate Wastewater Containing Nickel processing method according to any one of claims 1-4, which is characterized in that the electrolyzer unit
Quantity be 2-10；And/or
The power supply device is that polarity inverts power supply.
8. Treating Electroplate Wastewater Containing Nickel processing method according to any one of claims 1-4, which is characterized in that the cathode inner core is
Graphite inner core, it is in the shape of a rod；And/or
The anode bodies are graphite anode, in a tubular form.
9. Treating Electroplate Wastewater Containing Nickel processing method according to any one of claims 1-4, which is characterized in that the insulation strainer
Pore size is 2-4mm.
10. Treating Electroplate Wastewater Containing Nickel processing method according to any one of claims 1-4, which is characterized in that the active carbon
The diameter of grain is 5-10mm；And/or
The active carbon particle is activated using preceding with the nitric acid of 0.2mol/L.
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| CN201710717091.4A CN109422332A (en) | 2017-08-21 | 2017-08-21 | Treating Electroplate Wastewater Containing Nickel processing method |
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| CN112062430A (en) * | 2020-09-09 | 2020-12-11 | 樊晓瑜 | Sludge heavy metal treatment system |
| CN112062232A (en) * | 2020-09-09 | 2020-12-11 | 樊晓瑜 | Heavy metal removing electrode and heavy metal-containing fluid treatment method |
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