CN209397039U - A kind of strong complexing waste water contact break device - Google Patents
A kind of strong complexing waste water contact break device Download PDFInfo
- Publication number
- CN209397039U CN209397039U CN201821284078.0U CN201821284078U CN209397039U CN 209397039 U CN209397039 U CN 209397039U CN 201821284078 U CN201821284078 U CN 201821284078U CN 209397039 U CN209397039 U CN 209397039U
- Authority
- CN
- China
- Prior art keywords
- pond
- waste water
- fenton
- contact break
- water contact
- 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.)
- Active
Links
Landscapes
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The utility model discloses a kind of strong complexing waste water contact break devices, and including the nickeliferous conditioning tank being sequentially communicated, pH conditioning tank, iron-carbon micro-electrolysis pond, Fenton pond aoxidizes and removes ammonia nitrogen pond, restores pond, add alkali pool, sedimentation basin.Strong complexing waste water contact break device disclosed by the utility model can improve contact break effect, improve the subsequent efficiency except nickel system；Iron-carbon micro-electrolysis combination Fenton's reaction compares direct Fenton's reaction, has saved reagent cost；The device takes full advantage of the ferro element in iron-carbon micro-electrolysis and Fenton, can generate flocculant after adding alkali, without additional addition coagulant；Simple process, facility cost is few, and practicability is high.
Description
Technical field
The utility model relates to industrial waste water treatments, and in particular to produced by one kind industry containing semiconductor production
Strong complexing nickel waste water pretreatment contact break device.
Background technique
Nickel plating link in semiconductor production process can generate a large amount of nickel-containing waste water.Not with traditional electroplating industry waste water
Together, semicon industry nickel-containing waste water has some exclusive features: EDTA complexing nickel accounting is big, conductivity of waste water is low, ammonia nitrogen is dense
Degree is high.Traditional nickel-containing waste water processing method is not properly suited for the processing and reuse of the waste water, such as physico-chemical precipitation method, ion
Exchange process, absorption method can not destroy the cyclic structure of EDTA-Ni chelate, cause precipitating to be discharged total nickel not up to standard；Fenton, electrolysis
Pre- contact break method is then insufficient to EDTA-Ni contact break, sludge quantity is big, the later period is costly Deng aoxidizing.
Patent document (CN106698759 A) discloses a kind of chemical nickle-plating wastewater Zero discharge treatment method, the method master
It to include Fenton and the group technologies such as UV photochemical catalytic oxidation pretreatment, homogeneous membrane, reverse osmosis.But when waste water contains the strong network such as EDTA
When mixture, it is (" electric that Fenton and UV photochemical catalytic oxidation pretreatment dosage are big, effluent quality is still unable to reach high standard emission request
Plate industry pollutant emission standard " (GB21900-2008) table 3,3 standard of hereinafter referred table).Meanwhile ammonia can not be effectively removed
Nitrogen.
Therefore, a kind of preferable nickel-containing waste water processing for the treatment of effect is needed, discharge is reached after nickel-containing waste water being handled
Standard.
Utility model content
Goal of the invention: the utility model provides a kind of strong network waste water contact break device, of the existing technology containing low to solve
It is low etc. that the total nickel of water outlet caused by contact break is insufficient when nickel waste water processing is complexed by force in concentration is unable to reach discharge standard, wastewater recycle rate
The problem of.
Technical solution: the utility model discloses a kind of strong complexing waste water contact break devices, including the nickeliferous tune being sequentially communicated
Pond is saved, pH conditioning tank, iron-carbon micro-electrolysis pond, Fenton pond aoxidizes and removes ammonia nitrogen pond, restores pond, add alkali pool, sedimentation basin.
Wherein, the pH conditioning tank is equipped with soda acid and adds mouth.
Wherein, the Fenton pond is equipped with Fenton adding of agent mouth.
Wherein, the reduction pond is equipped with reducing agent and adds mouth.
The utility model provides a kind of strong contact break device of complexing nickel waste water comprising iron-carbon micro-electrolysis, Fenton's reaction,
Oxidation removes four major parts of ammonia nitrogen and reduction reaction.Its technical solution is as follows:
Nickel-containing waste water enters nickeliferous conditioning tank, is conveyed by elevator pump, and into pH conditioning tank, adjusting pH is 3-5, and gravity flow is successively
Into subsequent iron-carbon micro-electrolysis pond, in acid condition, iron, carbon in iron carbon filler generate primary battery, and redox occurs
Reaction, can effective degradation of organic substances, to reach contact break result.
Fenton pond is entered back into, wherein the hydroxyl radical free radical degradation complex compound generated by ferrous iron catalyzing hydrogen peroxide, into one
Step strengthens contact break effect.
Oxidation is successively entered back into except ammonia nitrogen pond, is aoxidized in ammonia nitrogen pond, sodium hypochlorite reacts with ammonia nitrogen, generates nitrogen；
It restores in pond, by the way that reducing agent is added, the excessive oxidant that reduction front-end process adds, it is alkalinity that the water after reduction, which adjusts pH,
Afterwards, the hydroxide precipitating for generating nickel, removes nickel ion.
Iron-carbon micro-electrolysis bottom of pond portion is equipped with aeration homogeneous device, is equipped with iron carbon filler, hydraulic detention time 30min in pond
~120min.
Fenton pond is equipped with Fenton reagent dosing mouth, adds FeSO to Fenton pond quantification by chemicals dosing plant4And H2O2。H2O2
Dosage be 1.0~2.0g H2O2/ g COD, FeSO4Dosage be 0.4~0.6g FeSO4/g H2O2, the reaction time is
30min~120min.
Oxidation sets oxidant dosing mouth except ammonia nitrogen pond, adds NaClO to pond quantification by chemicals dosing plant, dosage is
8~15g effective chlorine/g ammonia nitrogen, reaction time are 20min~40min.
Pond dosing mouth containing reducing agent is restored, chemicals dosing plant can add NaHSO according to pond internal oxidition reduction potential3, dosing
Amount is adjusted according to oxidation-reduction potential, maintains oxidation-reduction potential < 150mV.
Adding the pH adjusted in alkali pool is 8.5~12.0, and is added without flocculant, coagulant.
Sedimentation basin is vertical sedimentation basin, and alkali pool water is added to enter in sedimentation basin central tube, and the sedimentation time is 1h~3h.
Clarifier sludge periodically discharges, and into after Treatment of Sludge, filters pressing is at the outer processing of mud cake committee.
The utility model has the advantages that strong complexing waste water contact break device disclosed by the utility model has the advantage that
1) iron-carbon micro-electrolysis, Fenton oxidation, oxidation have fully considered that such waste water contains EDTA except process combinations such as ammonia nitrogens
The water quality characteristics of nickel, high ammonia nitrogen are complexed, after handling by the device, contact break effect can be improved, improve the subsequent effect except nickel system
Rate.
2) iron-carbon micro-electrolysis combination Fenton's reaction compares direct Fenton's reaction, has saved reagent cost.
3) device takes full advantage of the ferro element in iron-carbon micro-electrolysis and Fenton, can generate flocculant, nothing after adding alkali
Coagulant need to additionally be added.
4) simple process, facility cost is few, and practicability is high.
Detailed description of the invention
Fig. 1 is the frame construction drawing of strong complexing waste water contact break device.
Specific embodiment
The utility model is further explained with reference to the accompanying drawings and examples.
Embodiment
Nickel-containing waste water is collected into nickeliferous conditioning tank 1, and nickel-containing waste water water quality is as follows: 50~100mg/L of content of COD, always
2~4mg/L of content of the content 3~8mg/L, EDTA of nickel, 50~150mg/L of content of ammonia nitrogen, conductivity is less than 500 μ s/cm.
It is collected after concentrated processing in conditioning tank, Qiang Luohe nickel waste water is delivered to pH conditioning tank 2 by elevator pump 7, and adjusting pH is 3, enters
Iron-carbon micro-electrolysis pond 3, aeration reaction.And Fenton pond 4 is entered by gravity flow, the H of 2.5L/h is added2O2(30wt.%) and 33L/h
FeSO4(10wt.%) carries out Fenton oxidation reaction, carries out contact break processing to complexing nickel.Water flows into oxidation and removes after Fenton's reaction
Ammonia nitrogen pond 5, the NaClO (10wt.%) that 140L/h is added carry out oxidation reaction, further carry out contact break processing to complexing nickel, and
Ammonia nitrogen is removed, enters reduction pond 6 thereafter, restores in pond and NaHSO is added3(10wt.%) carries out reduction reaction, controls redox
Current potential < 150mV restores excessive oxidant.
After the contact break device contact break, nickel is removed using alkaline chemical precipitation method, being discharged total nickel concentration is 0.4-0.5mg/L；And
Nickel directly is removed with alkaline chemical precipitation method, is discharged nickel concentration > 1.0mg/L, after the strong complexing waste water contact break device, nickel is improved and goes
Except efficiency 50%, can make to be discharged the standard that total nickel reaches " discharge standard for pollutants from electroplating industry " (GB21900-2008) table 2.
The utility model provides the thinking and method of a kind of strong complexing waste water contact break device, implements the technical solution
Method and approach it is very much, the above is only the preferred embodiment of the utility model, it is noted that for the art
Those of ordinary skill for, without departing from the principle of this utility model, several improvements and modifications can also be made, this
A little improvements and modifications also should be regarded as the protection scope of the utility model, and each component part being not known in the present embodiment is available existing
There is technology to be realized.
Claims (4)
1. a kind of strong complexing waste water contact break device, characterized in that including the nickeliferous conditioning tank (1) being sequentially communicated, pH conditioning tank
(2), iron-carbon micro-electrolysis pond (3), Fenton pond (4), oxidation remove ammonia nitrogen pond (5), restore pond (6), add alkali pool (7), sedimentation basin (8).
2. strong complexing waste water contact break device according to claim 1, characterized in that the pH conditioning tank (2) is equipped with soda acid
Add mouth.
3. strong complexing waste water contact break device according to claim 1, characterized in that the Fenton pond (4) is equipped with Fenton medicine
Agent adds mouth.
4. strong complexing waste water contact break device according to claim 1, characterized in that the reduction pond (6) is equipped with reducing agent
Add mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821284078.0U CN209397039U (en) | 2018-08-09 | 2018-08-09 | A kind of strong complexing waste water contact break device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821284078.0U CN209397039U (en) | 2018-08-09 | 2018-08-09 | A kind of strong complexing waste water contact break device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209397039U true CN209397039U (en) | 2019-09-17 |
Family
ID=67877767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821284078.0U Active CN209397039U (en) | 2018-08-09 | 2018-08-09 | A kind of strong complexing waste water contact break device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209397039U (en) |
-
2018
- 2018-08-09 CN CN201821284078.0U patent/CN209397039U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105540947A (en) | Method and system for processing drilling wastewater | |
| CN109761401A (en) | A kind for the treatment of process of the strong complexing heavy metal waste water of EDTA class | |
| CN104261624B (en) | One gold cyaniding enterprise Treatment of cyanogen-contained wastewater | |
| CN210367231U (en) | EDTA class strong complex heavy metal wastewater's processing system | |
| CN109851103A (en) | A kind of group technology using organic matter in the heterogeneous Fenton processing coking wastewater reverse osmosis concentrated water of Iron carbon reduction- | |
| CN106396205B (en) | A kind of method of high concentration cyanide wastewater broken cyanide removing heavy metals | |
| CN104129875A (en) | Cyanated wastewater treatment method | |
| CN105800821A (en) | Up-to-standard treatment method and device for zinc-nickel alloy waste water | |
| CN113860638A (en) | Chemical-electrochemical-biological three-section combined wastewater treatment device and application | |
| CN109019999A (en) | A kind of processing method of the low concentration containing strong complexing nickel waste water | |
| CN111470671B (en) | Method for treating arsenic-containing organic wastewater | |
| CN108083563A (en) | A kind of admiro waste liquid, chemical nickel waste liquid and pickle liquor collaboration treatment process | |
| CN204022601U (en) | The micro-electrolysis advanced oxidation of MEO reactor | |
| CN109437447A (en) | A kind of preprocess method of guanine waste water | |
| CN213060470U (en) | Sulfuric acid process titanium dioxide effluent treatment plant | |
| CN209397039U (en) | A kind of strong complexing waste water contact break device | |
| CN105540954B (en) | A kind of method that chemical denitrification removes nitrate nitrogen in water removal | |
| CN207904003U (en) | A kind of cupric acidity liquid waste treatment system | |
| CN206417949U (en) | Refuse leachate film concentrates liquid treating system | |
| CN104787967A (en) | Treatment device for slightly-polluted surface water and application thereof | |
| JP3788688B2 (en) | Method and apparatus for electrolytic treatment of oxidized nitrogen-containing water | |
| CN209619123U (en) | A kind of system handling high ammonia-nitrogen wastewater | |
| CN209010295U (en) | A kind of strong complex state nickel-containing waste water set treatment device of low concentration | |
| CN112441683A (en) | Circuit board production wastewater treatment method | |
| CN213231872U (en) | Fenton oxidation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |