CN109422333A - The processing method of Treating Electroplate Wastewater Containing Nickel - Google Patents
The processing method of Treating Electroplate Wastewater Containing Nickel Download PDFInfo
- Publication number
- CN109422333A CN109422333A CN201710717093.3A CN201710717093A CN109422333A CN 109422333 A CN109422333 A CN 109422333A CN 201710717093 A CN201710717093 A CN 201710717093A CN 109422333 A CN109422333 A CN 109422333A
- Authority
- CN
- China
- Prior art keywords
- wastewater containing
- containing nickel
- iron filings
- processing method
- treating electroplate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
-
- 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
Abstract
The present invention provides a kind of processing methods of Treating Electroplate Wastewater Containing Nickel, it include: that tubular type electric flocculation device is provided, including tube type electrolytic tank, power supply device and sedimentation basin, electrolyzer unit includes being electrolysed slot cavity body, the cathode being arranged on electrolysis slot cavity body and the anode bodies being placed in electrolysis slot cavity body；Wherein, electrolysis slot cavity body includes two closeouts and the cylinder for being cylindrical in shape setting, and two closeouts are plugged in the both ends of cylinder respectively, and cylinder offers the inside and outside water inlet and water outlet of connection；Cathode is attached at the inner wall of cylinder；Anode bodies include the insulation strainer being enclosed by reticular structure, the iron filings being placed in insulation strainer and the anode inner core for passing through insulation strainer with iron filings electric connection and at least one end；Electrolyzer unit includes the aerator set on water inlet；Power supply device and aerator are opened, Treating Electroplate Wastewater Containing Nickel and electrolyte is passed through to tube type electrolytic tank, is precipitated after electric flocculation is handled.
Description
Technical field
The invention belongs to electrochemical technology field more particularly to a kind of processing methods of Treating Electroplate Wastewater Containing Nickel.
Background technique
Electroplating industry is modernization industry and the indispensable a part of economic development.However electroplating wastewater has water solubility
The harm such as good, stable structure, difficult for biological degradation, complicated component, electroplating wastewater discharge amount is big and harmfulness is serious, so that plating row
Industry becomes one of whole world three greatly pollution industry, is the major source of heavy metal wastewater thereby (comprising nickel, tin, iron, chromium, copper, gold etc.).Mesh
Before, the pollution rate of heavy metal has reached 80.1% in China's river,lake and reservior bed mud.Wherein, the Changjiang river, the Yellow River, Song Hua River, the Zhujiang River
The water quality of the heavy metals exceeding standard section in equal basins is to surpass V class.The governing problem of heavy metal wastewater thereby has become environment protection field concern
Focus.
Currently, the technology and methods of processing Treating Electroplate Wastewater Containing Nickel mainly have: (1) chemical precipitation method, such as: 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..But these methods there is or processing pollutant kind is single, complex process, investment cost are high,
Or need to add excess chemical medicament, sludge quantity big, and then leads to the problem of secondary pollution, it is difficult to reach discharge standard.
Summary of the invention
The purpose of the present invention is to provide a kind of processing methods of Treating Electroplate Wastewater Containing Nickel, it is intended to solve existing method processing and contain
Complex process, problem at high cost and ideal effect when nickel electroplating wastewater.
The invention is realized in this way a kind of processing method of Treating Electroplate Wastewater Containing Nickel, at least includes the following steps:
There is provided tubular type electric flocculation device, including tube type electrolytic tank, the power supply device for powering to tube type electrolytic tank and
Sedimentation basin for being connected with the water outlet of the tube type electrolytic tank, the tube type electrolytic tank include multiple series connection and head and the tail phase
Even electrolyzer unit, the electrolyzer unit include be electrolysed slot cavity body, be arranged in it is described electrolysis slot cavity body on cathode, with
And it is placed in the yin-yang polar body in the electrolysis slot cavity body；Wherein, the electrolysis slot cavity body includes two closeouts and is cylindrical in shape
The cylinder of setting, two closeouts are plugged in the both ends of the cylinder respectively, and the cylinder, which offers, enters water inside and outside connection
Mouth and water outlet；The cathode is attached at the inner wall of the cylinder；The anode bodies include being enclosed by reticular structure
Insulation strainer is placed in the iron filings to insulate in strainer and passes through with iron filings electric connection and at least one end described exhausted
The anode inner core of edge strainer；The electrolyzer unit includes the aerator set on the water inlet；
Power supply device and aerator are opened, Xiang Suoshu tube type electrolytic tank is passed through Treating Electroplate Wastewater Containing Nickel and electrolyte, through electricity
It is precipitated after flocculation treatment.
The processing method of Treating Electroplate Wastewater Containing Nickel provided by the invention, by tubular type electric flocculation device, using electro-flucculation process
By the majority of organic pollutants and the especially free titanium nickel of inorganic pollution-in Treating Electroplate Wastewater Containing Nickel and titanium nickel is combined to remove,
And high treating effect, 99.5% removal rate is reached to the removal rate containing electroplating wastewater.Wherein, the tubular type electric flocculation device knot
Structure is simple, and can adjust retention time of sewage by the quantity of flexible modulation series connection electrolysis slot unit.Meanwhile the tubular type
Electric flocculation device is turned waste into wealth using iron filings as sacrificial anode, and does not need to add other liquid medicine during electric flocculation, is saved
Processing cost.In addition, can adjust water conservancy using concatenated tubular type cell arrangement with the quantity of flexible modulation series connection electrolysis slot and stop
Time, so as to bear the impact of big yield and high-concentration waste water, and effluent quality of stablizing that treated, there is good application
Prospect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of tubular type electric flocculation device provided in an embodiment of the present invention；
Fig. 2 is the section structural schematic diagram of electrolyzer unit provided in an embodiment of the present invention.
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.
Since chemical nickel plating mainly passes through the surface that ionic state nickel is deposited on plating piece by chemistry redox, common chemistry
Nickel plating technology has Ni, P alloy and Ni, B alloy, therefore many complexing agent (such as hydroxyacetic acids can be used in nickel chemical plating technology
(glycolic), amion acetic acid) Lai Zengjia plating piece is glossy, it can be complexed containing more complexing agent and heavy metal in the waste water generated
Object causes waste component more complicated and difficult is handled by the simple chemisorption precipitation method.
In view of this, the embodiment of the invention provides a kind of processing methods of Treating Electroplate Wastewater Containing Nickel, at least in conjunction with Fig. 1-2
The following steps are included:
S01. tubular type electric flocculation device is provided, the power supply dress including tube type electrolytic tank 1, for powering to tube type electrolytic tank 1
The sedimentation basin 3 setting 2 and being connected with the water outlet of the tube type electrolytic tank, tube type electrolytic tank 1 include multiple series connection and head and the tail
Connected electrolyzer unit 11, the cathode 113 being arranged on electrolysis slot cavity body 111, electrolyzer unit 11 includes electrolysis vallecular cavity
Body 111 and the anode bodies 112 being placed in electrolysis slot cavity body 111；Wherein, electrolysis slot cavity body 111 includes two closeouts 1111
And it is cylindrical in shape the cylinder 1112 of setting, two closeouts 1111 are plugged in the both ends of cylinder 1112 respectively, and cylinder 1112 constitutes electricity
The tubular type cathode of slot unit 11 is solved, cylinder 1112 offers the inside and outside water inlet 11121 and water outlet 11122 of connection；Cathode
113 are attached at the inner wall of cylinder 1112；Anode bodies 112 include the insulation strainer 1121 being enclosed by reticular structure, are placed in absolutely
It iron filings 1122 in edge strainer 1121 and is electrically connected with iron filings 1122 and anode that at least one end passes through insulation strainer 1121
Inner core 1123；Electrolyzer unit 11 includes the aerator 114 at water inlet 11121；
S02. it opens power supply device and aerator, Xiang Suoshu tube type electrolytic tank is passed through Treating Electroplate Wastewater Containing Nickel and electrolyte,
It is precipitated after electric flocculation is handled.
The processing method of Treating Electroplate Wastewater Containing Nickel provided in an embodiment of the present invention passes through oxidation, reduction, flocculation, air flotation technology
Effective combination processing Treating Electroplate Wastewater Containing Nickel, concrete operating principle are as follows: in anode bodies 112 iron filings 1122 electronics, iron dissolve out shape
At Fe2+, due to Fe2+With OH-The wadding body flocculating effect of formation is bad；The embodiment of the present invention is led under the action of aerator 114
Aeration is crossed by Fe2+It is oxidized to Fe3+, with the OH in solution-In conjunction with formation has the flocculation group of high activity, which inhales
Attached ability is strong, and flocculating effect is better than common flocculant.It, will be in Treating Electroplate Wastewater Containing Nickel under the action of adsorption bridging and net are caught
Free state nickel and complex state nickel adsorption coprecipitation, to achieve the effect that removal.
The processing method of Treating Electroplate Wastewater Containing Nickel provided in an embodiment of the present invention is wadded a quilt with cotton by tubular type electric flocculation device, using electricity
Solidifying method is by the majority of organic pollutants and the especially free titanium nickel of inorganic pollution-in Treating Electroplate Wastewater Containing Nickel and combines titanium nickel
Removal, and high treating effect, 99.5% removal rate is reached to the removal rate containing electroplating wastewater.Wherein, the tubular type electric flocculation
Apparatus structure is simple, and can adjust retention time of sewage by the quantity of flexible modulation series connection electrolysis slot unit.Meanwhile institute
Tubular type electric flocculation device is stated using iron filings as sacrificial anode, is turned waste into wealth, and does not need to add other liquid medicine during electric flocculation,
Processing cost is saved.In addition, using concatenated tubular type cell arrangement water can be adjusted with the quantity of flexible modulation series connection electrolysis slot
The sharp residence time, so as to bear the impact of big yield and high-concentration waste water, and effluent quality of stablizing that treated, have good
Application prospect.
Specifically, tube type electrolytic tank 1 provided in an embodiment of the present invention includes multiple series connection and head and the tail in above-mentioned steps S01
Connected electrolyzer unit 11.Specifically, electrolyzer unit 11 includes electrolysis slot cavity body 111, is placed in electrolysis slot cavity body 111
Anode bodies 112 and the cathode 113 being arranged on electrolysis slot cavity body 111.Wherein, electrolysis slot cavity body 111 includes two closure
Part 1111 and the cylinder 1112 for being cylindrical in shape setting, two closeouts 1111 are plugged in the both ends of cylinder 1112, cylinder 1112 respectively
Offer connection inside and outside water inlet 11121 and water outlet 11122.It is electrolysed the space between slot cavity body 111 and anode bodies 112,
Electrolytic cell is formed, waste liquid can be flowed into through the water inlet 11121 of an electrolyzer unit 11, and it is anti-to flow through electrolytic cell progress electrochemistry
Ying Hou is flowed out through water outlet 11122, into the water inlet 11121 of latter electrolyzer unit 11.It is previous in the embodiment of the present invention
The water outlet 11122 of a electrolyzer unit 11 can be communicated directly with the water inlet 11121 of the latter electrolyzer unit 11, the two
It can also be connected to by connecting pipe.
Preferably, water inlet 11121 and water outlet 11122 are respectively adjacent to the setting of two closeouts 1111, so that waste water
The path longest for carrying out electrochemistry in a cell is conducive to improve flocculating effect.
In the embodiment of the present invention, cathode 113 is attached at the inner wall 1112 of cylinder.Cathode 113 in a tubular form, i.e. cathode
113 be tubular type cathode.It is further preferred that cathode 113 is graphite cathode, so that there is preferable electron supplying capacity, it can be with
Improve electrolysis effectiveness.
Anode bodies of the embodiment of the present invention 112 include the insulation strainer 1121 being enclosed by reticular structure, are placed in insulation filter
Iron filings 1122 in net 1121 and the anode inner core 1123 across insulation strainer 1121 and with the electric connection of iron filings 1122, sun
The both ends of pole inner core 1123 are connect with two closeouts 1111 respectively.In the embodiment of the present invention, using iron filings as anode material, no
Only source is wide, at low cost, can change Fei Weibao；Moreover, thus obtained electrolyzer unit 11 can be realized simple and quick tear open
It unloads.Specifically, in insulation strainer 1121 after the consumption to a certain extent of iron filings 1122, the iron filings that easily can more renew, and
Removable unit electrolytic cell 11 will not cause to interrupt to whole cell reaction.
Wherein, insulation strainer 1121, which is used to encapsulate iron filings 1122, forms an entirety, the anode as cell reaction；Together
When, since insulation strainer 1121 is insulating materials, iron filings 1122 can be completely cut off and directly contacted with sleeve cathode.Preferably,
The pore size of insulation strainer 1121 is 2-4mm, can be prevented while guaranteeing that 1122 ferrous ions of iron filings are fully dissolved out
Iron filings 1122 are fallen from the mesh of insulation strainer 1121 into electrolytic cell.Specific preferred, the aperture for the strainer 1121 that insulate is big
Small is 3mm.
In the embodiment of the present invention, it is used to prepare the iron filings of the anode bodies 112, including following pretreatment:
Iron filings raw material is placed in container, detergent is heated after adding water to cover the iron filings raw material, removes surface adhesion
Grease stain and organic matter, heat treatment wash time is preferably 10-30 minutes, and concretely 20 minutes.
Iron filings raw material after being filtered, cleaned carries out sour bubble processing, goes the oxide layer in scrap iron removing stock chart face, at sour bubble
The time of reason is preferably 15-20 minutes, and concretely 20 minutes.Preferably, in the sour bubble processing, using mass percentage
≤ 3.5% inorganic acid is directly reacted with iron filings with preventing concentration of hydrochloric acid excessively high, dissolves out ferrous ion.It is particularly preferred as
Sour bubble processing is carried out using the hydrochloric acid of mass percentage 2%.
It is most dried after distilled water flushing afterwards, obtains iron filings 1122.It is further preferred that iron filings 1122 are filled out
Filling density is 200-600kg/m3.If the packed density of iron filings 1122 is excessive, iron-content is excessive, Fe2+It is excessive to dissolve out concentration, meeting
Reduce flocculating effect；If the packed density of bits 1122 is too small, Fe2+It is small to dissolve out concentration, the suction to for example nickeliferous pollutant of pollutant
Attached performance is poor.
Anode inner core 1123 is used to increase the dissolution efficiency of anode ferrous ion, shortens the spacing between anode and cathode, improves
Current utilization rate, anode bodies 112 include the anode inner core 1123 across insulation strainer 1121 and with the electric connection of iron filings 1122.It is excellent
Choosing, anode inner core 1123 is in the shape of a rod.As a kind of implementation situation, one end of anode inner core 1123 passes through insulation strainer 1121；
As another implementation situation, the both ends of anode inner core 1123 both pass through insulation strainer 1121.Preferably, anode bodies 112 can be with
One or both ends by passing through the anode inner core 1123 of insulation strainer 1121 are fixedly connected on electrolysis slot cavity body 111, fixed
Connection type does not limit clearly, and including but not limited to bolt is fixed.Specific preferred, one end of anode inner core 1123 is fixed to be connected
It connects in a closeouts 1111 of electrolysis slot cavity body 111 or the both ends of anode inner core 1123 is respectively fixedly connected in electrolytic cell
In two closeouts 1111 of cavity 111.
It is further preferred that shortening the spacing between anode and cathode in order to preferably increase the dissolution efficiency of ferrous ion, mentioning
High current utilization rate, anode inner core 1123 are graphite inner core.
Due to the ferrous ion and OH from Anodic Stripping-The wadding body flocculating effect of formation is bad, electrolysis of the embodiment of the present invention
Slot unit 11 further includes the aerator 114 set on water inlet, so that the ferrous ion oxygen come will be dissolved out in molten iron filings 1122
Iron ion is turned to, with the OH in solution-In conjunction with the flocculation group with high activity is formed, electricity so as to non-selectivity is adsorbed
Free titanium nickel, reference state nickel and other pollutants in liquid are solved, are precipitated through sedimentation basin 3.
Preferably, aerator 114 includes aeration tube (not marking in figure) and air compressor machine (not marking in figure), wherein is exposed
Tracheae is positioned adjacent to 1111 inner wall of closeouts of water inlet 11121, so that the waste liquid entered through water inlet 11121 can
Guarantee suitable dissolved oxygen amount, is conducive to the oxidation of ferrous ion.
When the present invention can adjust tune stream of the waste water in tube type electrolytic tank 1 by the quantity of regulating electrolytic tank unit 11
Between, it is preferred that the quantity of electrolyzer unit 11 is 2-10.Specifically, the quantity of electrolyzer unit 11 can be 2,3,4
A, 5,6,7,8,9,10.
In above-mentioned steps S02, opens power supply device 2 and aerator 114, Xiang Suoshu tube type electrolytic tank 1 are passed through nickeliferous electricity
Waste electroplating and electrolyte carry out electric flocculation processing.In order to which the iron filings ferrous ions effectively dissolve out, it is preferred that the electric flocculation
The condition of processing are as follows: the DC voltage of 3-10V, current strength 2-8A are provided.Preferably, described based on every liter of nickel-containing waste water
The mass concentration of electrolyte is 0.4-0.8g/L, is conducive to improve conductivity, and then improve electric flocculation effect.Specific preferred electricity
Matter concentration is solved, provides suitable condition for electric flocculation reaction.The electrolyte includes but is not limited to sodium chloride, ferrous sulfate.
Preferably, in the embodiment of the present invention, power supply device 2 is that polarity inverts power supply, and the polarity reversion power supply can not only
Voltage needed for enough providing electrochemical reaction, and can be inverted by polarity, precipitation is further in the nickel and iron of cathode
Dissolution, solves the problems, such as to cause current efficiency to reduce since cathode is hardened.It is further preferred that the polarity reversion power supply
Power supply reversion is conducive to improve electric flocculation efficiency under the premise of preventing cathode hardened than being 20-30:1.It is specific preferred, institute
The power supply reversion of polarity reversion power supply is stated than being 20:1.
Preferably, it in the embodiment of the present invention, during the electric flocculation processing, is provided by the aerator 114
Air water volume ratio be 1:5-1:1, thus for electric flocculation handle enough dissolved oxygens are provided, be conducive to ferrous ions Cheng Rong
Easy flocculated iron ion.
Sedimentation basin is flowed by electric flocculation treated waste water, after precipitation process, supernatant discharge, sludge Chen Yu bottom of pond
Sludge sump in.Preferably, the time of precipitation process is 25-60 minutes, is particularly preferred as 30 minutes.In the embodiment of the present invention,
During electric flocculation, the pH for the initial Treating Electroplate Wastewater Containing Nickel being passed through is that (nickel waste water is electroplated 3 or so in chemical nickel wastewater pH to acidity
PH is 7 or so) pH be conducive to electric flocculation reaction；With the generation that electric flocculation is reacted, the pH of electrolyte is gradually risen, so that through
Electric flocculation treated waste water without adjust pH can Direct precipitation, save operation cost and operating process.
The processing method of Treating Electroplate Wastewater Containing Nickel provided in an embodiment of the present invention, overall operation is at low cost, and occupied area is small, throws
Provide it is small, it is easy to operate, be not necessarily to subsequent dosing precipitation process, except nickel effect it is good, nickel ion removal rate is 99.5% or more.
In the following, being illustrated in connection with specific embodiments.
Embodiment 1
A kind of processing method of Treating Electroplate Wastewater Containing Nickel, at least includes the following steps:
S11. tubular type electric flocculation device is provided, the polarity reversion including tube type electrolytic tank, for powering to tube type electrolytic tank
Power supply device and for precipitate flowed out from tube type electrolytic tank flocculation liquid sedimentation basin, tube type electrolytic tank includes multiple strings
Connection and end to end electrolyzer unit, electrolyzer unit include the anode for being electrolysed slot cavity body and being placed in electrolysis slot cavity body
Body；Wherein, electrolysis slot cavity body includes two closeouts and the graphite cylinder body for being cylindrical in shape setting, and two closeouts are plugged in cylinder respectively
The both ends of body, cylinder constitute the graphite tube cathode (caliber 60mm, length 700mm) of electrolyzer unit, and cylinder offers company
Lead to inside and outside water inlet and water outlet；Anode bodies include the insulation strainer being enclosed by reticular structure, are placed in insulation strainer
Iron filings and across insulation strainer and with iron filings be electrically connected anode inner core, the both ends of anode inner core respectively with two block
Part connection；Electrolyzer unit includes the aerator set on water inlet,
Wherein, be used to prepare the iron filings of the anode bodies, including following pretreatment: iron filings raw material is placed in container, adds water
Detergent is heated after covering the iron filings raw material, is heated 15 minutes；By the iron filings raw material after being filtered, being cleaned with 2%
Salt acid soak 20 minutes clean with distilled water flushing, is put into vacuum oven drying 24 hours at 60 DEG C, after cooling, taking-up is set
It is spare in drier；Iron filings are filled in the insulation strainer, packed density 400kg/m3,
The pore-size distribution of the insulation strainer is 3mm, length 700mm, diameter 50mm；
S12. Treating Electroplate Wastewater Containing Nickel is provided, the Treating Electroplate Wastewater Containing Nickel is that total nickel concentration is that (complex state nickel is 201mg/L
Chemical nickel electroplating wastewater 15mg/L), water quality situation are as follows: 10.9mg/L, pH5.1 is complexed in Ni total 201mg/L, Ni.It opens
Power supply device and aerator, Xiang Suoshu tube type electrolytic tank are passed through Treating Electroplate Wastewater Containing Nickel and electrolyte, lead after electric flocculation is handled
Enter inclined-plate clarifying basin to be precipitated, supernatant is discharged after precipitating 30 minutes, and sludge is sunken to pool bottom sludge slot.Wherein, the electricity wadding
The condition of solidifying processing are as follows: additional power source provides 6V DC voltage, and reversion is than being 20:1, current strength 4A, water conservancy residence time
It is 30 minutes, ferrous sulfate dosage is 0.5g/L, and the gas-water ratio that aerator provides is 1:3.
Using aas determination nickel ion concentration, measurement is through in treated the water outlet of the embodiment of the present invention 1, nickel concentration
1.1mg/L is complexed for Ni, nickel removal rate is 99.5%, and contact break rate is 92.7%.It is computed, the nickeliferous electricity of processing unit volume chemistry
Power consumption and cost of drugs required for waste electroplating show that operating cost is 1.35 yuan/m3。
Embodiment 2
A kind of processing method of Treating Electroplate Wastewater Containing Nickel, at least includes the following steps:
S21. tubular type electric flocculation device is provided, the polarity reversion including tube type electrolytic tank, for powering to tube type electrolytic tank
Power supply device and for precipitate flowed out from tube type electrolytic tank flocculation liquid sedimentation basin, tube type electrolytic tank includes multiple strings
Connection and end to end electrolyzer unit, electrolyzer unit include the anode for being electrolysed slot cavity body and being placed in electrolysis slot cavity body
Body；Wherein, electrolysis slot cavity body includes two closeouts and the graphite cylinder body for being cylindrical in shape setting, and two closeouts are plugged in cylinder respectively
The both ends of body, cylinder constitute the graphite tube cathode (caliber 60mm, length 700mm) of electrolyzer unit, and cylinder offers company
Lead to inside and outside water inlet and water outlet；Anode bodies include the insulation strainer being enclosed by reticular structure, are placed in insulation strainer
Iron filings and across insulation strainer and with iron filings be electrically connected anode inner core, the both ends of anode inner core respectively with two block
Part connection；Electrolyzer unit includes the aerator set on water inlet,
Wherein, be used to prepare the iron filings of the anode bodies, including following pretreatment: iron filings raw material is placed in container, adds water
Detergent is heated after covering the iron filings raw material, is heated 15 minutes；By the iron filings raw material after being filtered, being cleaned with 2%
Salt acid soak 20 minutes clean with distilled water flushing, is put into vacuum oven drying 24 hours at 60 DEG C, after cooling, taking-up is set
It is spare in drier；Iron filings are filled in the insulation strainer, packed density 200kg/m3,
The pore-size distribution of the insulation strainer is 3mm, length 700mm, diameter 50mm；
S22. Treating Electroplate Wastewater Containing Nickel is provided, the Treating Electroplate Wastewater Containing Nickel is that total nickel concentration is that (complex state nickel is 201mg/L
Chemical nickel electroplating wastewater 15mg/L), water quality situation are as follows: 10.9mg/L, pH5.1 is complexed in Ni total 201mg/L, Ni.It opens
Power supply device and aerator, Xiang Suoshu tube type electrolytic tank are passed through Treating Electroplate Wastewater Containing Nickel and electrolyte, lead after electric flocculation is handled
Enter inclined-plate clarifying basin to be precipitated, supernatant is discharged after precipitating 30 minutes, and sludge is sunken to pool bottom sludge slot.Wherein, the electricity wadding
The condition of solidifying processing are as follows: additional power source provides 3V DC voltage, and reversion is than being 20:1, current strength 2A, water conservancy residence time
It is 10 minutes, ferrous sulfate dosage is 0.4g/L, and the gas-water ratio that aerator provides is 1:5.
Using aas determination nickel ion concentration, measurement is through in treated the water outlet of the embodiment of the present invention 2, nickel concentration
5.5mg/L is complexed for Ni, nickel removal rate is 97.3%, and contact break rate is 63.3%.It is computed, the nickeliferous electricity of processing unit volume chemistry
Power consumption and cost of drugs required for waste electroplating show that operating cost is 1.02 yuan/m3。
Embodiment 3
A kind of processing method of Treating Electroplate Wastewater Containing Nickel, at least includes the following steps:
S21. tubular type electric flocculation device is provided, the polarity reversion including tube type electrolytic tank, for powering to tube type electrolytic tank
Power supply device and for precipitate flowed out from tube type electrolytic tank flocculation liquid sedimentation basin, tube type electrolytic tank includes multiple strings
Connection and end to end electrolyzer unit, electrolyzer unit include the anode for being electrolysed slot cavity body and being placed in electrolysis slot cavity body
Body；Wherein, electrolysis slot cavity body includes two closeouts and the graphite cylinder body for being cylindrical in shape setting, and two closeouts are plugged in cylinder respectively
The both ends of body, cylinder constitute the graphite tube cathode (caliber 60mm, length 700mm) of electrolyzer unit, and cylinder offers company
Lead to inside and outside water inlet and water outlet；Anode bodies include the insulation strainer being enclosed by reticular structure, are placed in insulation strainer
Iron filings and across insulation strainer and with iron filings be electrically connected anode inner core, the both ends of anode inner core respectively with two block
Part connection；Electrolyzer unit includes the aerator set on water inlet,
Wherein, be used to prepare the iron filings of the anode bodies, including following pretreatment: iron filings raw material is placed in container, adds water
Detergent is heated after covering the iron filings raw material, is heated 15 minutes；By the iron filings raw material after being filtered, being cleaned with 2%
Salt acid soak 20 minutes clean with distilled water flushing, is put into vacuum oven drying 24 hours at 60 DEG C, after cooling, taking-up is set
It is spare in drier；Iron filings are filled in the insulation strainer, packed density 600kg/m3,
The pore-size distribution of the insulation strainer is 3mm, length 700mm, diameter 50mm；
S22. Treating Electroplate Wastewater Containing Nickel is provided, the Treating Electroplate Wastewater Containing Nickel is that total nickel concentration is that (complex state nickel is 201mg/L
Chemical nickel electroplating wastewater 15mg/L), water quality situation are as follows: 10.9mg/L, pH5.1 is complexed in Ni total 201mg/L, Ni.It opens
Power supply device and aerator, Xiang Suoshu tube type electrolytic tank are passed through Treating Electroplate Wastewater Containing Nickel and electrolyte, lead after electric flocculation is handled
Enter inclined-plate clarifying basin to be precipitated, supernatant is discharged after precipitating 30 minutes, and sludge is sunken to pool bottom sludge slot.Wherein, the electricity wadding
The condition of solidifying processing are as follows: additional power source provides 10V DC voltage, and reversion is than being 20:1, current strength 8A, water conservancy residence time
It is 20 minutes, ferrous sulfate dosage is 0.8g/L, and the gas-water ratio that aerator provides is 1:1.
Using aas determination nickel ion concentration, measurement is through in treated the water outlet of the embodiment of the present invention 3, nickel concentration
2.5mg/L is complexed for Ni, nickel removal rate is 98.8%, and contact break rate is 83.3%.It is computed, the nickeliferous electricity of processing unit volume chemistry
Power consumption and cost of drugs required for waste electroplating show that operating cost is 1.81 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 processing method of Treating Electroplate Wastewater Containing Nickel, which is characterized in that at least include the following steps:
Tubular type electric flocculation device is provided, including tube type electrolytic tank, the power supply device for powering to tube type electrolytic tank and is used for
The sedimentation basin being connected with the water outlet of the tube type electrolytic tank, the tube type electrolytic tank include it is multiple series connection and it is end to end
Electrolyzer unit, the electrolyzer unit include being electrolysed slot cavity body, the cathode being arranged on the electrolysis slot cavity body and setting
Yin-yang polar body in the electrolysis slot cavity body；Wherein, the electrolysis slot cavity body including two closeouts and is cylindrical in shape setting
Cylinder, two closeouts are plugged in the both ends of the cylinder respectively, the cylinder offer the inside and outside water inlet of connection and
Water outlet；The cathode is attached at the inner wall of the cylinder；The anode bodies include the insulation being enclosed by reticular structure
Strainer, be placed in it is described insulation strainer in iron filings and with the iron filings be electrically connected and at least one end pass through the insulation filter
The anode inner core of net；The electrolyzer unit includes the aerator set on the water inlet；
Power supply device and aerator are opened, Xiang Suoshu tube type electrolytic tank is passed through Treating Electroplate Wastewater Containing Nickel and electrolyte, through electric flocculation
It is precipitated after processing.
2. the processing method of Treating Electroplate Wastewater Containing Nickel as described in claim 1, which is characterized in that the condition of the electric flocculation processing
Are as follows: the DC voltage of 3-10V is provided, current strength 2-8A, based on every liter of nickel-containing waste water, the mass concentration of the electrolyte is
0.4-0.8g/L。
3. the processing method of Treating Electroplate Wastewater Containing Nickel as described in claim 1, which is characterized in that the power supply device is that polarity is anti-
Turn power supply, and the power supply reversion of polarity reversion power supply is than being 20-30:1.
4. the processing method of Treating Electroplate Wastewater Containing Nickel as described in claim 1, which is characterized in that the aerator includes aeration
Pipe and air compressor machine, wherein the aeration tube is positioned adjacent to the closeouts inner wall of the water inlet, and electric flocculation processing
In the process, air water volume ratio is 1:5-1:1.
5. the processing method of the Treating Electroplate Wastewater Containing Nickel as described in claim 1-4 is any, which is characterized in that the cathode is stone
Black cathode, the anode inner core are graphite inner core.
6. the processing method of the Treating Electroplate Wastewater Containing Nickel as described in claim 1-4 is any, which is characterized in that the insulation strainer
Pore size is 2-4mm.
7. the processing method of the Treating Electroplate Wastewater Containing Nickel as described in claim 1-4 is any, which is characterized in that the filling of the iron filings
Density is 200-600kg/m3。
8. the processing method of the Treating Electroplate Wastewater Containing Nickel as described in claim 1-4 is any, which is characterized in that the electrolyzer unit
Quantity be 2-10.
9. the processing method of the Treating Electroplate Wastewater Containing Nickel as described in claim 1-4 is any, which is characterized in that be used to prepare the sun
The iron filings of polar body, including following pretreatment: iron filings raw material is placed in container, and washing is heated after adding water to cover the iron filings raw material
Agent, heat treatment；Iron filings raw material after being filtered, cleaned carries out sour bubble processing；Most it is dried after distilled water flushing afterwards
Processing, obtains iron filings.
10. the processing method of Treating Electroplate Wastewater Containing Nickel as claimed in claim 9, which is characterized in that in the acid bubble processing, use
The inorganic acid of mass percentage≤3.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710717093.3A CN109422333A (en) | 2017-08-21 | 2017-08-21 | The processing method of Treating Electroplate Wastewater Containing Nickel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710717093.3A CN109422333A (en) | 2017-08-21 | 2017-08-21 | The processing method of Treating Electroplate Wastewater Containing Nickel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109422333A true CN109422333A (en) | 2019-03-05 |
Family
ID=65498989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710717093.3A Pending CN109422333A (en) | 2017-08-21 | 2017-08-21 | The processing method of Treating Electroplate Wastewater Containing Nickel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109422333A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101618905A (en) * | 2008-07-04 | 2010-01-06 | 浙江工业大学 | Method for treating phosphoric wastewater through ozone-enhanced electrocoagulation |
| CN101717135A (en) * | 2009-12-04 | 2010-06-02 | 浙江师范大学 | Method for treating nickel-containing electroplating wastewater and recovering nickel by electrolysis |
| CN202744370U (en) * | 2012-08-09 | 2013-02-20 | 青岛海安生物环保有限公司 | Strengthened micro electrolytic cell |
| CN103641208A (en) * | 2013-11-08 | 2014-03-19 | 华南理工大学 | Method for treating nickel-containing circuit board waste water in composite electrolytic tank |
| CN105384222A (en) * | 2015-12-15 | 2016-03-09 | 苏州依斯倍环保装备科技有限公司 | Waste water electric flocculation treatment device |
| CN205773543U (en) * | 2016-05-23 | 2016-12-07 | 湖北吉隆危废处理技术有限公司 | Electricity flocculation combination unit |
-
2017
- 2017-08-21 CN CN201710717093.3A patent/CN109422333A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101618905A (en) * | 2008-07-04 | 2010-01-06 | 浙江工业大学 | Method for treating phosphoric wastewater through ozone-enhanced electrocoagulation |
| CN101717135A (en) * | 2009-12-04 | 2010-06-02 | 浙江师范大学 | Method for treating nickel-containing electroplating wastewater and recovering nickel by electrolysis |
| CN202744370U (en) * | 2012-08-09 | 2013-02-20 | 青岛海安生物环保有限公司 | Strengthened micro electrolytic cell |
| CN103641208A (en) * | 2013-11-08 | 2014-03-19 | 华南理工大学 | Method for treating nickel-containing circuit board waste water in composite electrolytic tank |
| CN105384222A (en) * | 2015-12-15 | 2016-03-09 | 苏州依斯倍环保装备科技有限公司 | Waste water electric flocculation treatment device |
| CN205773543U (en) * | 2016-05-23 | 2016-12-07 | 湖北吉隆危废处理技术有限公司 | Electricity flocculation combination unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207158980U (en) | Tubular type electric flocculation device | |
| JP5881727B2 (en) | Carbon bed electrolyzer for waste liquid treatment and its process | |
| CN206069598U (en) | A kind of wiring board ammonia nitrogen waste water electrochemical reactor processes complexes | |
| CN104386874A (en) | Processing technology for high-concentration waste liquid in circuit board industry | |
| JP2009541036A (en) | Cooling towers requiring silica removal from water and methods and integrated systems for water treatment in various processes | |
| CN107337301B (en) | A kind of method of the electric Fenton processing waste water of additional hydrogen peroxide | |
| CN102211830B (en) | Method for treating cutting liquid wastewater by electro-catalytic oxidation | |
| CN101781001A (en) | Method for processing effluent by two-stage electrolysis and device thereof | |
| CN111039363A (en) | Electrochemical coupling membrane separation self-induced Fenton-like copper complex breaking and strengthening removal device and application thereof | |
| CN108217862B (en) | Double-electrode electric flocculation-electrocatalysis ozone device and industrial wastewater treatment method | |
| Mahajan et al. | Treatment of hospital operation theatre effluent by electrocoagulation | |
| CN102092821A (en) | Application method of high-property activated carbon fibers in treatment of industrial waster water by electrocoagulation | |
| CN210127160U (en) | Novel photoelectric coupling effluent disposal system | |
| CN101698523B (en) | Method for applying molded carbon in treatment of industrial waste water by electroflocculation | |
| CN102887559A (en) | Electrochemical reduction assistance-based biosorption integrated reactor and treatment method of hexavalent chromium-containing wastewater | |
| CN106396029A (en) | Arsenic removal method of SCR catalyst | |
| CN104628093A (en) | Drinking water electrolytic reactor with self-purifying function | |
| CN110436576A (en) | Except the method and device of cyanogen granule electrode and preparation method and processing high cyanide containing wastewater | |
| CN106746054A (en) | A kind of method that three-dimensional electrolysis process galvanograph waste water | |
| CN112358095B (en) | Treatment method of EDTA complex nickel wastewater | |
| CN109422332A (en) | Treating Electroplate Wastewater Containing Nickel processing method | |
| CN105198049A (en) | Method of sewage treatment | |
| CN208717048U (en) | A kind of integrated sewage treating apparatus | |
| CN1796615A (en) | Method of cyclic electrolysis process in constant electric potential in use for purifying electroplating solution | |
| CN201367380Y (en) | Aquaculture water purifying device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190305 |