CN207596522U - A kind of galvanized liquid waste handles retracting device - Google Patents
A kind of galvanized liquid waste handles retracting device Download PDFInfo
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- CN207596522U CN207596522U CN201721438063.0U CN201721438063U CN207596522U CN 207596522 U CN207596522 U CN 207596522U CN 201721438063 U CN201721438063 U CN 201721438063U CN 207596522 U CN207596522 U CN 207596522U
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Abstract
The utility model discloses a kind of galvanized liquid wastes to handle retracting device, including electrochemical reaction cell, DC power system, working electrode module, air system, bulky ferric hydroxide precipitate filtration system, the upper surface of electrochemical reaction cell is equipped with several groups of electrode terminals, setting water inlet port above the outer wall of electrochemical reaction cell, setting water outlet port below the outer wall of electrochemical reaction cell, emptying pipe port is also set up below the outer wall of electrochemical reaction cell, the bottom of electrochemical reaction cell is provided with bucket, and the bottom of bucket is provided with sludge pipe；The positive and negative electrode binding post of DC power system is connected by power lead with electrode terminal respectively；Working electrode module, including electrode support, electrode group, electrode support is mounted on electrode terminal, and electrode group is mounted on the lower section of electrode support, and extends into electrochemical reaction cell.The utility model is used for the processing of the high ammonia nitrogen waste liquid of high zinc, and economic value is high, has a good application prospect.
Description
Technical field
The utility model is related to technical field of waste water processing, and in particular to a kind of device for galvanized liquid waste processing recycling
And method.
Background technology
It is zinc-plated including electrogalvanizing and galvanizing, be have a wide range of application, the steel material corrosion-resistant surface protection that usage amount is big
Technology.Total output about 40% such as the annual metallic zinc in the whole world is used for Steel Materials Heat Coating Zinc.The annual steel piece in China (is free of plank
And silk material) galvanizing yield about at 70,000,000 tons or so.It needs to pre-process metal material surface before zinc-plated,
Such as hot dip galvanizing process often includes degreasing, pickling, leaching quickening liquid and galvanizing process.Therefore hot galvanizing process can generate degreasing and give up
The high-concentration waste water of the different qualities such as water, pickling waste waters and useless quickening liquid.Obviously, it is zinc-plated but be high pollution, high energy consumption metal
Material surface treatment process.It discharges so reducing galvanized liquid waste and recycles the focus that useful resource is always engineering circles research.
In galvanizing process, a kind of waste water of special water quality, wherein Zn are often generated2+Content 3000mg/L, ammonia nitrogen
300-2000mg/L, ferrous ion is in more than 1000mg/L, the features such as chloride ion content is high.Due to the ammonia wherein containing high concentration
Nitrogen and zinc ion are to lead to 2 common indexs of zinc-plated enterprise's discharge overproof water quality and cause to take over centralized sewage disposal
The exceeded major influence factors of plant effluent ammonia nitrogen.Therefore reason forces enterprise usually to be carried out such galvanized liquid waste as dangerous waste
Disposition, not only disposal costs are high, and cause the waste of zinc resource；It can also generate in subsequent processing simultaneously largely dirty containing zinc
Mud.
To solve the problem of environmental pollution of galvanizing industry, utility model patent (CN103482817A) discloses a kind of heat
Galvanized liquid waste zero-discharge treatment system, the method do not relate to mainly for alkaline degreasing waste water, the comprehensive treatment ＆ reuse of pickling waste waters
And the processing containing high zinc high ammonia-nitrogen wastewater/liquid.Utility model patent (CN103951105A) discloses a kind of pickling waste waters processing
And the method that recycling sludge utilizes, also it is not directed to the processing containing high zinc high ammonia-nitrogen wastewater/liquid.Utility model patent
(CN103755080A) a kind of method using electrolysis processing galvanizing pickle liquor is disclosed.This method will be electrolysed what is generated
Chlorine and sodium hydroxide solution are back to respectively in the neutralisation treatment for helping the production of plating tank liquor and acid pickle, realize zinc-plated acid pickle
Recycling and reduce the wastewater discharge of hot dip galvanizing process.Utility model patent (94112437.1) discloses galvanized liquid waste
Processing and recycling precipitate method, this method are combined using a variety of chemical reagent added in and are adjusted wastewater pH, realized to zinc-plated
The processing of waste water and the recycling of zinc oxide.Utility model patent (200810060227.X) discloses a kind of zinc chloride waste water zinc salt
Recovery method.This method controls pH in 8-9 ranges using adding in vulcanized sodium, by Zn2+ZnS precipitations are converted into be recycled.
Utility model patent (200810117788.9) discloses a kind of processing method of waste water from electric galvanization in cold rolling.It is by waste water
The middle industry calcium hydroxide that adds in is neutralized, and control pH after 8.5-9 ranges, filtering precipitate, realizes the row up to standard of waste water
It puts.Yang Fu is published in material protection (2014,47 (supplementary issues)：122-126) uses such as J.Carrillo-Abad are reported in a text
When single-cell for electrolyzation handles galvanizing pickling waste waters, when electrolysis is more than after a certain period of time, Zn will appear redissolution phenomenon, use the moon
Amberplex (AEM) can prevent electrolytically generated Cl2 prevent the redissolution of Zn from reaching anode.However, due to Cl2Deposit
In Fe2+Meeting and Zn2+It is co-deposited on cathode, the purity of zinc is caused to be remarkably decreased.To prevent the co-deposition of iron, AEM is changed into
Cation-exchange membrane (CEM), pickling waste waters allow Zn in anode portion, this NAFION-117 films (CEM)2+Preferentially pass through arrival
Cathode, in anode Fe2+It is oxidized to Fe3+And it cannot pass through.But because of Fe3+Deng presence, irreversibility can be caused to pollute film,
The service life of film is shortened, increases the integrated treatment cost of waste water.
In conclusion in the prior art, for the processing containing high zinc high ammonia-nitrogen wastewater that galvanizing process generates, exist
How the shortcomings that different overcomes, and is current urgent problem.
Utility model content
Contain present in the processing of high zinc high ammonia-nitrogen wastewater to what galvanizing process generated the purpose of the utility model is to overcome existing
The problem of.The galvanized liquid waste processing retracting device of the utility model, stainless steel plate are used as cathode, the NiO modifications in electrode group
Ti electrode is anode, and passes through the operating voltage for controlling different periods, is realized to zinc ion in galvanized liquid waste, ferrous ion
It is separately recovered and the purification to ammonia nitrogen, has the characteristics that processing procedure cleaning, easy to control, power consumption is low, economic value is high, tool
There is good application prospect.
In order to achieve the above object, technical solution is used by the utility model：
A kind of galvanized liquid waste handles retracting device, it is characterised in that：Including electrochemical reaction cell, DC power system, work
Make electrode module, air system, bulky ferric hydroxide precipitate filtration system,
The upper surface of the electrochemical reaction cell is equipped with several groups of electrode terminals, the outer wall of the electrochemical reaction cell
Top setting water inlet port, setting water outlet port below the outer wall of the electrochemical reaction cell, the electrochemical reaction cell it is outer
Emptying pipe port is also set up below wall, the bottom of the electrochemical reaction cell is provided with bucket, and the bottom of the bucket is provided with
Sludge pipe；
The positive and negative electrode binding post of the DC power system is connected by power lead with electrode terminal respectively；
The working electrode module, including electrode support, electrode group, the electrode support is mounted on electrode terminal,
The electrode group is mounted on the lower section of electrode support, and extends into electrochemical reaction cell；
The air system, including air compressor machine, air main pipe, micro-hole aerator, the air main pipe is horizontally arranged at electricity
Bottom in chemical reaction pond pond, the micro-hole aerator is multiple, at equal intervals respectively on air main pipe, and with air main pipe
It is connected, the air main pipe extends electrochemical reaction cell and is connected with air compressor machine；
The bulky ferric hydroxide precipitate filtration system, including sludge pump, slurry filter, one end of the sludge pump and mud
Bucket is connected, and the other end of the sludge pump is connected by slurry filter and electrochemical reaction cell.
A kind of aforementioned galvanized liquid waste processing retracting device, it is characterised in that：The water inlet port, water outlet port, emptying
Between pipe port, sludge pipe, air main pipe and air compressor machine, between sludge pump and bucket, slurry filter and electrochemical reaction cell
Between be mounted on control valve.
A kind of aforementioned galvanized liquid waste processing retracting device, it is characterised in that：The electrode support is using corrosion resistant exhausted
Edge system into, the identical stainless steel plate of one group of area in the electrode group as cathode, what the NiO in the electrode group was modified
Ti electrode is anode, and the quantity of the electrode group is multigroup, and the spacing of every group of electrode is 5mm.
A kind of aforementioned galvanized liquid waste handles retracting device, and air flow meter is equipped on the air compressor machine.
A kind of aforementioned galvanized liquid waste processing retracting device, the electrode terminal include positive terminal and negative terminal
Column, the positive and negative electrode of the positive terminal and negative terminal respectively with corresponding electrode group are connected.
A kind of aforementioned galvanized liquid waste processing retracting device, the shape of the bucket is funnel shaped.
The beneficial effects of the utility model are：The galvanized liquid waste processing retracting device of the utility model, it is anti-including electrochemistry
Ying Chi, DC power system, working electrode module, air system, bulky ferric hydroxide precipitate filtration system, are made using stainless steel plate
For cathode, the Ti electrode that the NiO in electrode group is modified is anode, and pass through the operating voltage for controlling different periods, is realized pair
Zinc ion in galvanized liquid waste, ferrous ion be separately recovered and the purification to ammonia nitrogen, there is processing procedure cleaning, easy to control, electric
The characteristics of low can be consumed, suitable for the processing of the high ammonia nitrogen waste liquid of high zinc, economic value is high, has a good application prospect.
Description of the drawings
Fig. 1 is the structure diagram of the galvanized liquid waste processing retracting device of the utility model；
Fig. 2 is the vertical view of the galvanized liquid waste processing retracting device of the utility model.
The meaning marked in attached drawing is as follows：
1：Electrochemical reaction cell；101：Electrode terminal；102：Intake port；103：Water outlet port；104：It is vented pipe end
Mouthful；105：Bucket；106：Sludge pipe；2：DC power system；3：Working electrode module；301：Electrode support；302：Electrode group；
4：Air system；401：Air compressor machine；402：Air main pipe；403：Micro-hole aerator；5：Bulky ferric hydroxide precipitate filtration system；
501：Sludge pump；502：Slurry filter.
Specific embodiment
Below in conjunction with Figure of description, the utility model is further described.
As shown in Figures 1 and 2, the galvanized liquid waste processing retracting device of the utility model, including electrochemical reaction cell 1, directly
Power-supply system 2, working electrode module 3, air system 4, bulky ferric hydroxide precipitate filtration system 5 are flowed,
The upper surface of the electrochemical reaction cell 1 is equipped with several groups of electrode terminals 101, the electrochemical reaction cell 1
Outer wall above setting water inlet port 102, setting water outlet port 103 below the outer wall of the electrochemical reaction cell 1, the electrification
It learns and emptying pipe port 104 is also set up below the outer wall of reaction tank 1, the bottom of the electrochemical reaction cell 1 is provided with bucket 105,
The bottom of the bucket 105 is provided with sludge pipe 106；
The positive and negative electrode binding post of the DC power system 2 is connected by power lead with electrode terminal 101 respectively
It connects；
The working electrode module 3, including electrode support 301, electrode group 302, the electrode support 301 is mounted on electrode
On binding post 101, the electrode group 302 is mounted on the lower section of electrode support 301, and extends into electrochemical reaction cell 1；
The air system 4, including air compressor machine 401, air main pipe 402, micro-hole aerator 403, the air main pipe 402
The bottom in 1 pond of electrochemical reaction cell is horizontally arranged at, the micro-hole aerator 403 is multiple, is done respectively in air at equal intervals
On pipe 402, and be connected with air main pipe 402, the air main pipe 402 extend electrochemical reaction cell 1 and with air compressor machine 401
It is connected；
The bulky ferric hydroxide precipitate filtration system 5, including sludge pump 501, slurry filter 502, the sludge pump 501
One end be connected with bucket 105, the other end of the sludge pump 501 passes through slurry filter 502 and 1 phase of electrochemical reaction cell
Unicom.
Preferably, intake port 102, water outlet port 103, emptying pipe port 104, sludge pipe 106, air main pipe 402 with
It is mounted between air compressor machine 401, between sludge pump 501 and bucket 105, between slurry filter 502 and electrochemical reaction cell 1
Control valve can control air, the flow of galvanized liquid waste or unlatching, the flowing for closing air, galvanized liquid waste.
Preferably, the electrode support 301 is made of corrosion resistant insulator, one group of face in the electrode group 302
The identical stainless steel plate of product is as cathode, and Ti electrode that the NiO in the electrode group 302 is modified is anode, the electrode group 302
Quantity to be multigroup, and the spacing of every group of electrode is 5mm, and apart from small, recovering effect is good, improves organic efficiency.
Preferably, air flow meter is installed on the air compressor machine 401.
Preferably, the electrode terminal 101 includes positive terminal and negative terminal, the positive terminal and negative
Positive and negative electrode of the pole binding post respectively with corresponding electrode group 302 is connected.
Preferably, the shape of the bucket 105 is funnel shaped, convenient for recycling iron hydroxide flco.
The galvanized liquid waste processing recovery method of the utility model, includes the following steps,
Galvanized liquid waste, air are entered electrochemical reaction cell 1 by step (A) from water inlet port 102, micro-hole aerator 403
In, after reaching specified liquid level, stop into galvanized liquid waste, air；
Step (B) starts DC power system 2, the galvanized liquid waste processing being electrochemically reacted in pond 1, and starts to count
When, the operating voltage of DC power system 2 is in 0.7-1.3V；
Ferrous ion in galvanized liquid waste is converted into ferric ion, continues timing by step (C), timing 30min
After 30min, DC power system 2 is closed；
Step (D) opens air compressor machine 401, and the galvanized liquid waste in electrochemical reaction cell 1 is roused by micro-hole aerator 403
Ferric ion is converted into iron hydroxide flco and is deposited in the bucket 105 of 1 bottom of electrochemical reaction cell by gas 10min；
Step (E) opens bulky ferric hydroxide precipitate filtration system 5, and the iron hydroxide flco in bucket 105 is filtered, and
Sludge cake is recycled, and the clear liquid of filtering is returned in electrochemical reaction cell 1；
Step (F), is again started up DC power system 2, and the operating voltage of DC power system 2 is adjusted to 2.7V, after
Galvanized liquid waste processing in the continuous electrochemical reaction cell 1 for carrying out 30min, until zinc can be according to zinc recovery in galvanized liquid waste
It is required that being deposited on the cathode of electrode group 302, the distance between corresponding anode of cathode after zinc is deposited is less than 1mm-
It during 1.5mm, needs to close DC power system 2, zinc recovering is carried out to the cathode of electrode group 302, is being worked on；Zinc recovering
Process is sent the zinc thermosol unwind zinc of cathode to galvanizing melting furnace or Thermal zinc plating bath or electrogalvanizing slot；
Step (G), after the zinc on requirement recycling 302 cathode of electrode group of zinc recovery, if the ammonia nitrogen in zinc waste water
Concentration is below standard, the requirement of ammonia nitrogen concentration, the electrification continued under the operating voltage of 2.7V during further according to zinc waste water draining
The galvanized liquid waste in reaction tank 1 is learned, until reaching ammonia nitrogen concentration reaches emission request, completes the processed of entire galvanized liquid waste
Journey.
Retracting device is handled below according to the galvanized liquid waste of the utility model, the high ammonia nitrogen of high zinc generated to hot galvanizing process
The treatment effect analysis of waste liquid,
Major pollutants Zn in waste liquid/water that hot galvanizing process generates2+、Fe2+, the concentration of ammonia nitrogen it is high.One enterprise provides
Heat zinc coating auxiliary waste liquid in Zn2+Content is in 3008mg/L, ammonia nitrogen 1980mg/L, ferrous ion 1500mg/L, chlorion
7000mg/L.Above-mentioned heat zinc coating auxiliary waste liquid is handled using the experimental provision that the processing capacity processed is 2L/h
And the recycling of resource.The cathode of the device is 316L stainless steel plates, just extremely 60 mesh modification Ti electrode, the area equation of the two,
The working electrode area of electrochemical reactor dischargeable capacity installation is 2.0m2/1m3Left and right.
The experimental results showed that：When pole plate spacing variation between 1mm-20mm, operating voltage in two stages, preceding 30min
Operating voltage for 1.3V, centre stops aeration 10min, and then work 30min again when operating voltage is 2.7V, effluent quality
With the rule of Distance change between the electrodes referring to table 1.
Influence of the 1 working electrode spacing of table to Zn content in zinc recovery and sludge
Above-mentioned waste water is handled, but as pole plate spacing >=10mm, increase operating voltage, still in two stages,
The operating voltage of preceding 30min is 1.3V, and centre stops aeration 10min；But back segment operating voltage changes between 3.5-6.5V, then
The rule that work 30min, effluent quality etc. changes with operating voltage is referring to table 2.
Influence (electrode spacing 10mm) of 2 operating voltage of table to Zn content in zinc recovery and sludge
2. the treatment effect analysis for the high ammonia nitrogen waste liquid of high zinc that pair electrogalvanizing process generates.
To Zn in a plating zincky waste liquor2+Content is in 3000mg/L, ammonia nitrogen 800mg/L, ferrous ion 1000mg/L, chlorine
Ion is 5000mg/L and micro heavy metal copper ion, nickel ion.It is handled according to above-mentioned optimal procedure parameters, water outlet obtains
Good effect was obtained, the rate for depositing zinc is fast, and purity is high, while the Zn content in iron hydroxide sludge is less than 30mg/kg.Ammonia
Nitrogen has obtained thorough purification.
3. the treatment effect analysis for the high ammonia nitrogen waste liquid of high zinc that pair electrogalvanizing process generates.
To Zn in another plating zincky waste liquor2+Content in 700mg/L, ammonia nitrogen 2000mg/L, ferrous ion 1000mg/L,
Chlorion is 5000mg/L and micro heavy metal copper ion, nickel ion.It is handled, is discharged according to above-mentioned optimal procedure parameters
Good effect is obtained, the rate for depositing zinc is fast, and purity is high, while the Zn content in iron hydroxide sludge is also below 30mg/
kg.After iron ion and zinc ion all recycling, water outlet ammonia nitrogen is about in 300-500mg/L or so, at this time in operating voltage
10min is continued under 2.7V, you can makes water outlet ammonia control within discharge standard.
In conclusion the galvanized liquid waste processing retracting device of the utility model, including electrochemical reaction cell, DC power supply system
System, working electrode module, air system, bulky ferric hydroxide precipitate filtration system, using stainless steel plate as cathode, in electrode group
The Ti electrodes that are modified of NiO for anode, and pass through the operating voltage for controlling different periods, realize to zinc in galvanized liquid waste from
Son, ferrous ion be separately recovered and the purification to ammonia nitrogen, have the characteristics that processing procedure clean, easy to control, power consumption is low,
Suitable for the processing of the high ammonia nitrogen waste liquid of high zinc, economic value is high, has a good application prospect.
The basic principle, main features and advantages of the utility model have been shown and described above.The technical staff of the industry
It should be appreciated that the present utility model is not limited to the above embodiments, the above embodiments and description only describe this
The principle of utility model, on the premise of not departing from the spirit and scope of the utility model, the utility model also has various change
And improvement, these various changes and improvements fall within the scope of the claimed invention.The utility model requires protection scope
It is defined by the appending claims and its equivalent thereof.
Claims (6)
1. a kind of galvanized liquid waste handles retracting device, it is characterised in that：Including electrochemical reaction cell（1）, DC power system
（2）, working electrode module（3）, air system（4）, bulky ferric hydroxide precipitate filtration system（5）,
The electrochemical reaction cell（1）Upper surface several groups of electrode terminals are installed（101）, the electrochemical reaction cell
（1）Outer wall above setting water inlet port（102）, the electrochemical reaction cell（1）Outer wall below setting water outlet port
（103）, the electrochemical reaction cell（1）Outer wall below also set up emptying pipe port（104）, the electrochemical reaction cell（1）
Bottom be provided with bucket（105）, the bucket（105）Bottom be provided with sludge pipe（106）；
The DC power system（2）Positive and negative electrode binding post by power lead respectively with electrode terminal（101）It is connected
It connects；
The working electrode module（3）, including electrode support（301）, electrode group（302）, the electrode support（301）It is mounted on
Electrode terminal（101）On, the electrode group（302）Mounted on electrode support（301）Lower section, and it is anti-to extend into electrochemistry
Ying Chi（1）It is interior；
The air system（4）, including air compressor machine（401）, air main pipe（402）, micro-hole aerator（403）, the air does
Pipe（402）It is horizontally arranged at electrochemical reaction cell（1）Bottom in pond, the micro-hole aerator（403）To be multiple, divide at equal intervals
Not in air main pipe（402）On, and with air main pipe（402）It is connected, the air main pipe（402）Extend electrochemical reaction
Pond（1）And and air compressor machine（401）It is connected；
The bulky ferric hydroxide precipitate filtration system（5）, including sludge pump（501）, slurry filter（502）, the sludge pump
（501）One end and bucket（105）It is connected, the sludge pump（501）The other end pass through slurry filter（502）With electrification
Learn reaction tank（1）It is connected.
2. a kind of galvanized liquid waste processing retracting device according to claim 1, it is characterised in that：The water inlet port
（102）, water outlet port（103）, emptying pipe port（104）, sludge pipe（106）, air main pipe（402）With air compressor machine（401）It
Between, sludge pump（501）With bucket（105）Between, slurry filter（502）With electrochemical reaction cell（1）Between be mounted on controlling
Valve processed.
3. a kind of galvanized liquid waste processing retracting device according to claim 1, it is characterised in that：The electrode support
（301）It is made of corrosion resistant insulator, the electrode group（302）The identical stainless steel plate of one group of interior area is as negative
Pole, the electrode group（302）The Ti electrode that interior NiO is modified is anode, the electrode group（302）Quantity to be multigroup, it is and every
The spacing of group electrode is 5mm.
4. a kind of galvanized liquid waste processing retracting device according to claim 1, it is characterised in that：The air compressor machine（401）
On air flow meter is installed.
5. a kind of galvanized liquid waste processing retracting device according to claim 3, it is characterised in that：The electrode terminal
（101）Including positive terminal and negative terminal, the positive terminal and negative terminal respectively with corresponding electrode group
（302）Positive and negative electrode be connected.
6. a kind of galvanized liquid waste processing retracting device according to claim 1, it is characterised in that：The bucket（105）'s
Shape is funnel shaped.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721438063.0U CN207596522U (en) | 2017-11-01 | 2017-11-01 | A kind of galvanized liquid waste handles retracting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721438063.0U CN207596522U (en) | 2017-11-01 | 2017-11-01 | A kind of galvanized liquid waste handles retracting device |
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| Publication Number | Publication Date |
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| CN207596522U true CN207596522U (en) | 2018-07-10 |
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ID=62758328
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108862921A (en) * | 2018-07-23 | 2018-11-23 | 徐州工程学院 | A kind of electrochemical reaction appts in titanium dioxide treatment waste water |
| WO2022070119A1 (en) * | 2020-10-02 | 2022-04-07 | Zincovery Process Technologies Limited | Process to electrochemically extract dissolved metals and an apparatus thereof |
-
2017
- 2017-11-01 CN CN201721438063.0U patent/CN207596522U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108862921A (en) * | 2018-07-23 | 2018-11-23 | 徐州工程学院 | A kind of electrochemical reaction appts in titanium dioxide treatment waste water |
| WO2022070119A1 (en) * | 2020-10-02 | 2022-04-07 | Zincovery Process Technologies Limited | Process to electrochemically extract dissolved metals and an apparatus thereof |
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Effective date of registration: 20181207 Address after: Unit 337, B07 Floor, 199 Renai Road, Suzhou Industrial Park, Jiangsu Province, 215123 Patentee after: SUZHOU REMEDI ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. Address before: 212011 No. 3 Tieta Road, Guyang Town, Dantu District, Zhenjiang City, Jiangsu Province Patentee before: Zhenjiang Nuobang Environmental Technology Co. Ltd. |
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Granted publication date: 20180710 Termination date: 20201101 |
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