CN107628676A - A kind of super Magneto separate waste water treatment process of electric flocculation - Google Patents
A kind of super Magneto separate waste water treatment process of electric flocculation Download PDFInfo
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- CN107628676A CN107628676A CN201711092931.9A CN201711092931A CN107628676A CN 107628676 A CN107628676 A CN 107628676A CN 201711092931 A CN201711092931 A CN 201711092931A CN 107628676 A CN107628676 A CN 107628676A
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Abstract
The invention discloses a kind of super Magneto separate waste water treatment process of electric flocculation, comprise the following steps：（1）Pending waste water is transported to and assigned in magnetic response device, magnetic kind is added, is uniformly mixed；（2）The waste water of step 1 processing is transported in electric flocculation device, and electric flocculation reaction is carried out with pulse current；（3）Waste water after step 2 is handled is transported in magnetic separating device, progress Magneto separate processing, sludge floc sedimentation and waste water separate during Magneto separate, except the waste water of crude removal is discharged by delivery port；（4）The sewage floc that step 3 magnetic separating device separates is transported in magnetic retracting device, reclaims magnetic kind, separated sludge, sludge is transferred in storage basin.The super Magneto separate technique of electric flocculation of the present invention is electrochemically generated coagulant reaction efficiency and is higher than outer adding medicine several times, active ingredient utilization is more abundant without dosing coagulant；The dosage of flocculation aid can be reduced simultaneously, and technique is more environmentally-friendly.
Description
Technical field
The present invention relates to a kind of waste water flocculating purification techniques, the more particularly to super Magneto separate waste water treatment process of electric flocculation, category
In environmental technology field.
Background technology
Wastewater processing technology includes filtration method, flocculence, centrifugal separation at present, and wherein flocculence is with its disposal ability
By force, the features such as energy consumption is low, and clean-up effect is stable is widely applied.Conventional chemical flocculation be added into waste water it is various
Flocculant, after flocculant is dissolved in waste water generation containing the hydroxide ion largely with strong suction-operated, hydroxyl from
It is miscellaneous that son and colloidal state impurity, suspended impurity generation flocculation reaction generation flocculate, while flocculate can adsorb nonreactive suspension
Matter, most the colloidal state impurity in waste water and suspended impurity coprecipitation remove at last.
Super Magneto separate is a kind of fast treating process to be grown up based on flocculence, is mainly guided using super magnetic material
Flocculate precipitate quick separating from waste water removes.Super Magneto separate generally refers to Magnaglo or ferromagnetism dusty material is used as and drawn
Lead a kind of magnetic separation technique that core of the flocculation without separation is implemented.Super Magneto separate technique is to take up an area the characteristics of small, processing speed is fast
Be widely used in various sewage disposal devices, can suspension, colloid in quick separating water, while to dissolubility COD, total phosphorus etc.
Acted on good removal.
The prime cost of current super magnetic separating device system operation is waste water lifting expense and dosing coagulant, flocculant
Expense.Conventional coagulant includes aluminium polychloride, bodied ferric sulfate etc., and it is polyacrylamide to commonly use flocculant, can be divided into the moon
Ion, cation, nonionic etc..Because wastewater treatment total amount is a lot, so coagulant and flocculant usage are generally bigger,
This causes in wastewater treatment process dosing coagulant and flocculant into the major part of purification of waste water cost.
Effluent water quality varies, and colloid, the suspension equal size for needing flocculation to remove in waste water are different, add medicine
The dosage of agent is also required to corresponding adjust.But often it is difficult to the adjustment needs for taking into account different situations during wastewater purification,
Coagulant and the slight excess of dosing method of flocculant can be used in most cases, to ensure that final purification effect reaches preferable
It is horizontal.This to add medicament application efficiency not high, causes part medicament to waste loss.
According to analysis, the expense for adding medicament at present has accounted for the 40-70% of the total processing cost of wastewater treatment, if can reduce
Medicament expense can significantly lift the economy of super magnetic separation technique, lift its competitiveness.
The content of the invention
It is an object of the invention to overcome in the wastewater treatment process in the presence of prior art, magnetic separation technique adds medicine
The control of agent dosage is inaccurate, adds the high deficiency of reagent cost, there is provided a kind of super Magneto separate waste water treatment process of electric flocculation.This hair
For the dosage for the medicament that flocculates in the bright super Magneto separate waste water treatment process of optimization, the implementation of flocculation reaction is controlled by electric flocculation,
While ensuring flocculating effect, overcome the shortcomings of that flocculation adding of agent dosage is difficult to accurate perception control.
In order to realize foregoing invention purpose, the invention provides following technical scheme：
A kind of super Magneto separate waste water treatment process of electric flocculation, comprises the following steps：
（1）Pending waste water is transported to and assigned in magnetic response device, magnetic kind is added, is uniformly mixed.
（2）The waste water of step 1 processing is transported in electric flocculation device, and electric flocculation reaction, electric flocculation are carried out with pulse current
Reaction time 10-120min.The electrode used in electric flocculation course of reaction, which can decompose, produces aluminium ion and/or iron ion
Electrode.
（3）Waste water after step 2 is handled is transported in magnetic separating device, carries out Magneto separate processing, Magneto separate mistake
Sludge floc sedimentation and waste water separate in journey, except the waste water of crude removal is discharged by delivery port.The sludge floc sedimentation contains sludge wadding
Condensate and magnetic kind.
（4）The sewage floc that step 3 magnetic separating device separates is transported in magnetic retracting device, reclaims magnetic kind, separation is dirty
Mud, sludge are transferred in storage basin.
The super Magneto separate waste water treatment process of electric flocculation of the present invention is in no longer dosing coagulant of super Magneto separate leading portion coagulation stage
（Such as aluminium polychloride, bodied ferric sulfate, poly-ferric chloride）, and use and electric wadding is carried out to sewage by high-frequency pulse current
It is solidifying, the floc sedimentation of formation.The metal such as aluminium, iron is anode in electric flocculation course of reaction, is dissoluted in the presence of electric current, produce aluminium from
Son, iron ion, in a series of oxidizing process through hydrolysis, polymerization and ferrous iron, develop into various hydroxo complexes, multinuclear hydroxyl
Complex compound makes colloidal state impurity in waste water, suspended impurity cohesion so that hydroxide, and condensation product and magnetic kind be combined with each other precipitation.
High-frequency pulse current electrode decomposing produces aluminium ion, iron ion, and using magnetic kind as " core " flocculation reaction, generation occur for reaction generation
Floc sedimentation.The growing amount of floc sedimentation is controlled according to high-frequency pulse current parameter, and floc sedimentation growing amount is controllable, accurate reaction, is subtracted
Few wasting of resources, it is cost-effective.Floc sedimentation has magnetic because including magnetic kind, can be separated from the water out rapidly by ultra-magnetic separator
Come, sewage is purified by above-mentioned flow.The characteristics of magnetic, also referred to as magnetic floc sedimentation, are had according to sludge floc sedimentation.
Simultaneously as flocculation ion equally has the characteristic in pulse spacing caused by pulse current electrode decomposing, and it is adjoint
Repulsion before ionization produces mutually drives so that magnetic kind can more disperse between each other.Flocculation ion caused by electrolysis
Relative spacing flocculation reaction, the flocculate of final purification show as the flocculate largely disperseed, can more sufficiently cleaned up waste water
In colloidal state, suspended state impurity.Meanwhile swimming can occur in the electric field for charged contaminants particle or floc sedimentation, its Partial charge quilt
Electrode neutralizes and promotes it to take off steady coagulation.Waste water colloidal state by the purification of electric flocculation of the present invention super Magneto separate waste water treatment process and
Suspended contamination content is extremely low, and the quality after purification of waste water is extremely outstanding.
In addition, when waste water carries out electrolytic flocculation processing, not only there is coagulative precipitation effect to colloidal state impurity and suspended impurity, also
Including the purified treatment by anodizing and cathodic reduction effect, multiple pollutant in water removal can be removed.
Further, in step 1, pending waste water is first filtered to remove debris, subsequently into tax magnetic response by collecting
Device.By filtering can rapidly remove in waste water can directly simple and mechanical separation bulk debris, avoid bulk for electricity wadding
The harmful effect of solidifying reaction, reduce the cost consumption of electric flocculation.
Further, in step 1, the magnetic kind is magnetic, 0.1-100 μm of magnetic particle size range.Small magnetic can be more preferable
And flocculation dirt combine, strengthen the effect of follow-up Magneto separate/super Magneto separate.
Preferably, magnetic kind dosage is 10-200mg/L, the speed that adds of magnetic kind is set according to pending wastewater flow, really
Floc sedimentation total amount caused by the dosage and rear process electric flocculation of guarantor's magnetic kind is adapted, and facilitates dirt Magneto separate, while ensures that magnetic kind is returned
Receive efficiency high.It is highly preferred that magnetic kind dosage 50-150mg/L.
Preferably, add after magnetic kind, waste water is stirred.Through being sufficiently stirred magnetic kind in advance it is dispersed come,
It can preferably be combined with floc sedimentation caused by electric flocculation, especially as the core of floc sedimentation floc sedimentation preferably be reunited one
Rise.
Further, in step 2, in magnetic separating device, magnetic separating device includes disk, and disk can rotate, and turns in disk
When dynamic, containing the floc sedimentation that is magnetic（Sludge floc sedimentation）Sewage flow through magnetic disk surface, wherein magnetic floc sedimentation（Sludge floc sedimentation）By magnetic
Disk is adsorbed and collected to magnetic retracting device, and water quality is purified.
Preferably, in step 2, magnetic separating device is super magnetic separating device.Super magnetic separation technique is regarded as a kind of reinforcing
Mixed flocculation sediment technology." core " that magnetic kind is formed as flco/floc sedimentation, then in the presence of coagulant, suspends in water
The effects such as thing, colloid etc. are compressed by electric double layer, chemistry is built bridge form coagulation flco based on " core ", then pass through flocculation
Agent is named the effect of flocculation aid so that floc sedimentation becomes much larger, be more closely knit, and for pulse current swimming effect, floccule body equally may be used
With more closely knit, and floc sedimentation has magnetic because of parcel magnetic kind, can be attracted to a magnet and be salvaged from water and.
Further, in step 3, magnetic kind retracting device is by floc sedimentation（Sludge floc sedimentation）In magnetic kind recovery, then magnetic kind is returned
Return in magnetic kind configuration throwing device, be configured to after finite concentration and add again into pending waste water.Magnetic kind is equipped with to return
Knock off skill so that magnetic kind is separated again in floc sedimentation is reused, it is ensured that magnetic kind is fully used, and avoids adding magnetic kind
The waste of medicament.
Further, the spacing of electrode is that the distance between 1-10cm, electrode should not be too remote, to ensure to be electrolysed caused flocculation
Ion dirt interaction to be precipitated, fully reaction can realize catharsis quickly and in waste water.Preferred electrode spacing
For 2-9cm.Such as can be 3cm, 4 cm, 5 cm, 6 cm, 7 cm etc..
Further, in step 2, electrode uses aluminium sheet or iron plate.Plate electrode has bigger surface area, in pulse current
Flocculation ion caused by the lower decomposition of effect is more scattered, can more preferably complete the flocculation treatment reaction for impurity component.
Further, in step 2, the current density of pulse current is 1-10A/cm3, higher current density is to ensure to be electrolysed
Flocculation reaction, adsorption precipitation impurity can sufficiently occur for caused ion.
Preferably, the dutycycle of pulse current is 0.1-0.9, and appropriate dutycycle ensures that ion caused by electrolysis is fully made
With spaced separation so that magnetic kind is more obvious as the effect of floc sedimentation core, lifts the effect and magnetic of follow-up Magneto separate
The kind rate of recovery.Meanwhile pulse current advantageously reduces electrolysis energy consumption, cost for wastewater treatment is saved.
Further, if the electrical conductivity of waste water is relatively low, a certain amount of salt is added.The conductance of waste water is improved by adding salt
Rate so that waste water has higher efficiency in electric flocculation course of reaction.Such as can be sodium sulphate, sodium chloride, potassium sulfate etc.
Salt.
Preferably, the dosage of salt is added as the μ s/cm of conductivity of waste water >=5003。
Further, step 2, after the completion of the reaction of electric flocculation device electric flocculation, the precipitation that PAM promotes floc sedimentation is added.
Compared with prior art, beneficial effects of the present invention：
1st, the super Magneto separate technique of electric flocculation of the present invention is electrochemically generated coagulant reaction efficiency higher than additional without dosing coagulant
Medicament several times, active ingredient utilization are more abundant；The dosage of flocculation aid can be reduced simultaneously, and technique is more environmentally-friendly.
2nd, the super Magneto separate technique post precipitation of electric flocculation of the present invention is realized using Magneto separate or super Magneto separate, whole system
Floor space significantly reduces, and good separating effect.
3rd, macromolecule organic in waste water is synchronously realized in the super Magneto separate technique electrochemical reaction process of electric flocculation of the present invention
Oxidation Decomposition, improve biodegradability, while notable to sewage decoloring and other effects.
4th, high volence metal ion in water can be reduced and sunk in the super Magneto separate technique electrochemical process of electric flocculation of the present invention
Form sediment and separate, be particularly suitable for handling heavy metal-containing waste water.
Brief description of the drawings：
Fig. 1 is electric flocculation Magneto separate sewage treatment technology process figure of the present invention.
Embodiment
With reference to test example and embodiment, the present invention is described in further detail.But this should not be understood
Following embodiment is only limitted to for the scope of the above-mentioned theme of the present invention, it is all that this is belonged to based on the technology that present invention is realized
The scope of invention.
<Embodiment 1>
Process object is is dyeing waste water in this process example, pH ≈ 6.8, COD ≈ 400mg/L, suspension about 300mg/
L, about 260 times of colourity, the μ s/cm of electrical conductivity about 12003。
Waste water first adds magnetic about 100mg/L, enters electric flocculation device, electric flocculation device negative and positive after abundant high-speed stirred
Pole electrode is iron, and wherein electrode sets parallel plate electrode 5cm or so, current strength about 3.5mA/cm3；Power supply is pulse,
Power supply dutycycle is 0.4, and frequency 1KHz, the electric flocculation reaction time is 30min, and the water after processing adds PAM（Polyacrylamide
Amine）Then about 4mg/L stirs, ultra-magnetic separator is entered after floc sedimentation is formed, and main part is in ultra-magnetic separator
The basic no suspended substance state of clarification is presented in parallel disk composition, spacing about 3-5cm, waste water after super Magneto separate.
Through analysis, water outlet COD is 89mg/L, and pH value about 7.2, suspension 19mg/L, colourity is 20 times.
<Comparative example 1>
Waste water is handled with embodiment 1, waste water adds PAC after first adding magnetic about 100mg/L, abundant high-speed stirred 2min（It is poly-
Close aluminium chloride）About 80mg/L, after being sufficiently stirred about 5min, PAM about 4mg/L are added, 2min is reacted after reducing mixing speed, is wadding a quilt with cotton
Group enters ultra-magnetic separator after being formed, main part forms for parallel disk in ultra-magnetic separator, spacing about 3-
The basic no suspended substance state of clarification is presented in 5cm, waste water after super Magneto separate.
Through analysis, water outlet COD is 173mg/L, and pH value about 7.0, suspension 22mg/L, colourity is 50 times.
<Comparative example 2>
Waste water is handled with embodiment 1, waste water adds PFS after first adding magnetic about 100mg/L, abundant high-speed stirred 2min（It is poly-
Close ferric sulfate）About 80mg/L, after being sufficiently stirred about 5min, PAM about 4mg/L are added, 2min is reacted after reducing mixing speed, is wadding a quilt with cotton
Group enters ultra-magnetic separator after being formed, main part forms for parallel disk in ultra-magnetic separator, spacing about 3-
The basic no suspended substance state of clarification is presented in 5cm, waste water after super Magneto separate.
Through analysis, water outlet COD is 167mg/L, and pH value about 7.0, suspension 24mg/L, colourity is 60 times.
Analyze in visible embodiment 1 and the comparative example 1 and 2 of additional coagulant, wherein COD are better than to the treatment effect of waste water
Become apparent with the removal effect of colourity.
<Comparative example 3>
Pole plate spacing is set
Purified treatment is carried out to same dyeing waste water using the technique similar to embodiment 1, parallel pole is adjusted in processing procedure
Plate spacing 7cm, 10cm, 15cm or so, remaining parameter and embodiment 1 are consistent.
Through analysis, parallel plate electrode spacing 7cm scheme：By same 30min electric flocculations, final outflow water COD about 91mg/L,
PH value about 7.1, suspension 24mg/L, colourity are 21 times.
Through analysis, parallel plate electrode spacing 10cm scheme：By same 30min electric flocculations, final outflow water COD is 97mg/
L, pH value about 7.2, suspension 36mg/L, colourity are 23 times.
Through analysis, parallel plate electrode spacing 15cm scheme：By same 30min electric flocculations, final outflow water COD is 205mg/
L, pH value about 7.1, suspension 167mg/L, colourity are 56 times.
It can be seen that the spacing setting for parallel plate electrode during electric flocculation has a significant impact for purification of waste water quality,
If pole plate spacing sets the flocculating effect of too big waste water bad, all unfavorable finally for COD, suspension and colourity, therefore not
Excessive pole plate spacing can be set, should preferably controlling plate spacing 1-10cm.
<Embodiment 2>
The present embodiment process object is desulfurization wastewater, and pH ≈ 6.4, COD ≈ 360mg/L, suspension about 210mg/L, colourity is about
310 times, the μ s/cm of electrical conductivity about 13503。
Waste water first adds magnetic about 110mg/L, enters electric flocculation device, electric flocculation device negative and positive after abundant high-speed stirred
Pole electrode is aluminium sheet, and wherein battery lead plate spacing about 4cm is set, current strength about 5mA/cm3；Power supply is pulse, power supply
Dutycycle is 0.3, frequency 1KHz, and the electric flocculation reaction time is 45min, and the water after processing adds PAM about 6mg/L and then stirred
Uniformly, ultra-magnetic separator is entered after floc sedimentation is formed, main part forms for parallel disk in ultra-magnetic separator, spacing
The basic no suspended substance state of clarification is presented in about 3-5cm, waste water after super Magneto separate.
Through analysis, water outlet COD is 57mg/L, and pH value about 7.1, suspension 12mg/L, colourity is 25 times.
<Embodiment 3>
The present embodiment process object is dyeing waste water, and pH ≈ 6.7, COD ≈ 360mg/L, suspension about 400mg/L, colourity is about
240 times, the μ s/cm of electrical conductivity about 11003。
Waste water first adds magnetic about 95mg/L, enters electric flocculation device, electric flocculation device negative and positive after abundant high-speed stirred
Pole electrode is iron plate, spacing 3-4cm, current strength about 8mA/cm3；Power supply is pulse, and power supply dutycycle is 0.5, frequency
Rate is 1KHz, and the electric flocculation reaction time is 20min, and the water after processing adds PAM about 5mg/L and then stirred, in floc sedimentation shape
Enter ultra-magnetic separator into later, main part forms for parallel disk in ultra-magnetic separator, spacing 4-5cm, waste water warp
The basic no suspended substance state of clarification is presented after crossing super Magneto separate.
Through analysis, water outlet COD is 76mg/L, and pH value about 7.3, suspension 21mg/L, colourity is 22 times.
<Comparative example 4>
Using the technique similar to embodiment 3 to same dyeing waste water purified treatment, the pulse power is simply changed to constant current, its
Remaining parameter and embodiment 3 are consistent.
Through analysis, water outlet COD is 86mg/L, and pH value about 7.5, suspension 36mg/L, colourity is 25 times.Constant Electric Current is wadded a quilt with cotton
It is solidifying to handle the energy consumption for having increased considerably electric flocculation, but without the effect of lifting waste water purification.Probably due to non-pulse electric current is electric
In solution preocess it is caused flocculation ion do not disperseed sufficiently, ion caused by electrolysis itself mutually flocculates, lack for
The flocculation of waste water impurity composition, and then cause clean-up effect not rise anti-drop.Preferably, therefore use dutycycle 0.1-0.9
Pulse current carry out electric flocculation.It is highly preferred that the pulse current using dutycycle 0.3-0.7.
<Embodiment 4>
The present embodiment process object is sanitary sewage, and pH ≈ 6.7, COD ≈ 520mg/L, suspension about 600mg/L, colourity is about
120 times, the μ s/cm of electrical conductivity about 8703。
Waste water first adds magnetic about 100mg/L, enters electric flocculation device, electric flocculation device negative and positive after abundant high-speed stirred
Pole electrode is iron, and wherein electrode sets parallel plate electrode 3cm or so, current strength about 10mA/cm3；Power supply is pulse, electricity
Source dutycycle is 0.2, and frequency 1KHz, the electric flocculation reaction time is 10min, and the water after processing adds PAM about 4mg/L and then stirred
To mix uniformly, ultra-magnetic separator is entered after floc sedimentation is formed, main part forms for parallel disk in ultra-magnetic separator,
Away from about 3-5cm, the basic no suspended substance state of clarification is presented in waste water after super Magneto separate.
Through analysis, water outlet COD is 46mg/L, and pH value about 7.2, suspension 8mg/L, colourity is 15 times.
<Comparative example 5>
Purified treatment is carried out to same sanitary wastewater using the technique similar to embodiment 4, it is close to adjust electric current in processing procedure
Spend 3A/cm3、5A/cm3、7A/cm3、13A/cm3Left and right, remaining parameter and embodiment 4 are consistent.
Through analysis, 3A/cm3Electric flocculation processing, final outflow water COD is 47mg/L, pH value about 7.2, suspension 8mg/
L, colourity are 15 times.
Through analysis, 5A/cm3Electric flocculation processing, final outflow water COD is 46mg/L, pH value about 7.2, suspension 9mg/
L, colourity are 14 times.
Through analysis, 7A/cm3Electric flocculation processing, final outflow water COD is 47mg/L, pH value about 7.2, suspension 7mg/
L, colourity are 14 times.
Through analysis, 13A/cm3Electric flocculation processing, final outflow water COD is 50mg/L, pH value about 7.2, and suspension is
29mg/L, colourity are 19 times.
Research finds that the current density of electric flocculation is little for the influential effect of electric flocculation, but when the electric current of electric flocculation is close
After degree is more than 10A, clean-up effect does not rise further not only, occurs reduction slightly on the contrary, while electric flocculation
Energy consumption increases considerably, so the current density of electric flocculation is no more than 10A/cm3。
Claims (10)
1. a kind of super Magneto separate waste water treatment process of electric flocculation, comprises the following steps：
（1）Pending waste water is transported to and assigned in magnetic response device, magnetic kind is added, is uniformly mixed；
（2）The waste water of step 1 processing is transported in electric flocculation device, and electric flocculation reaction, electric flocculation reaction are carried out with pulse current
Time 10-120mim；The electrode used in electric flocculation course of reaction is can to decompose the electricity for producing aluminium ion and/or iron ion
Pole；
（3）Waste water after step 2 is handled is transported in magnetic separating device, progress Magneto separate processing, during Magneto separate
Sludge floc sedimentation and waste water separate, except the waste water of crude removal is discharged by delivery port；The sludge floc sedimentation contains sludge flocculation thing
With magnetic kind；
（4）The sewage floc that step 3 magnetic separating device separates is transported in magnetic retracting device, reclaims magnetic kind, separated sludge is dirty
Mud is transferred in storage basin.
2. the super Magneto separate waste water treatment process of electric flocculation as claimed in claim 1, it is characterised in that in step 1, pending is useless
Water is filtered to remove debris, enters after regulation and assign magnetic response device by collecting.
3. the super Magneto separate waste water treatment process of electric flocculation as claimed in claim 1, it is characterised in that in step 1, the magnetic kind is
Magnetic, 0.1-100 μm of magnetic particle size range.
4. the super Magneto separate waste water treatment process of electric flocculation as claimed in claim 1, it is characterised in that the dosage of magnetic kind is 10-
200mg/L。
5. the super Magneto separate waste water treatment process of electric flocculation as claimed in claim 1, it is characterised in that in step 2, magnetic separating device
In, magnetic separating device includes disk, and disk can rotate, and when disc rotation, the sewage containing the floc sedimentation that is magnetic flows through magnetic
Panel surface, wherein magnetic floc sedimentation are adsorbed and collected to magnetic retracting device by disk, and water quality is purified.
6. the super Magneto separate waste water treatment process of electric flocculation as claimed in claim 1, it is characterised in that in step 2, magnetic separating device
It is super magnetic separating device.
7. the super Magneto separate waste water treatment process of electric flocculation as claimed in claim 1, it is characterised in that in step 3, magnetic kind recovery dress
Put and reclaim the magnetic kind in floc sedimentation, then magnetic kind is returned in magnetic kind configuration throwing device, is configured to after finite concentration again
Add into pending waste water.
8. the super Magneto separate waste water treatment process of electric flocculation as claimed in claim 1, it is characterised in that the spacing of electrode is 1-
10cm。
9. the super Magneto separate waste water treatment process of electric flocculation as claimed in claim 1, it is characterised in that in step 2, electrode uses aluminium
Plate or iron plate.
10. the super Magneto separate waste water treatment process of electric flocculation as claimed in claim 1, it is characterised in that in step 2, pulse current
Current density be 1-10A/cm3。
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Cited By (4)
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| CN108545882A (en) * | 2018-06-26 | 2018-09-18 | 南京林业大学 | A kind of electric flocculation, magnetic flocculation and the integrated sewage-treatment plant of Magneto separate and method |
| CN110540327A (en) * | 2019-08-27 | 2019-12-06 | 首创爱华(天津)市政环境工程有限公司 | Advanced treatment process for activated sand micro-flocculation sewage |
| CN112607929A (en) * | 2020-11-25 | 2021-04-06 | 湖南鑫远环境科技股份有限公司 | Method and device for reinforced recovery of nitrogen and phosphorus from struvite |
| CN112607928A (en) * | 2020-11-25 | 2021-04-06 | 湖南鑫远环境科技股份有限公司 | Method for separating and recovering struvite crystal precipitate |
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