CN107739071A - A kind of electrochemically strengthening Zero-valent Iron waste water pretreatment system and method - Google Patents
A kind of electrochemically strengthening Zero-valent Iron waste water pretreatment system and method Download PDFInfo
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- CN107739071A CN107739071A CN201711095740.8A CN201711095740A CN107739071A CN 107739071 A CN107739071 A CN 107739071A CN 201711095740 A CN201711095740 A CN 201711095740A CN 107739071 A CN107739071 A CN 107739071A
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- zero
- valent iron
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/70—Treatment of water, waste water, or sewage by reduction
- C02F1/705—Reduction by metals
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
-
- 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
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Abstract
The invention discloses a kind of electrochemically strengthening Zero-valent Iron waste water pretreatment system, including wastewater collection pond (1), elevator pump (2), reinforcing Zero-valent Iron processing system (3), D.C. regulated power supply system (4)；Strengthen Zero-valent Iron processing system (3) to be made up of the tubular type electricity enhancing Zero-valent Iron reaction column (5) of some serial or parallel connections.The invention also discloses a kind of preprocess method：Waste water, which is pumped into, in wastewater collection pond (1) strengthens Zero-valent Iron processing system (3), D.C. regulated power supply system (4) provides institute's on-load voltage, electric current to strengthen Zero-valent Iron processing system (3), under the conditions of applying direct current, weak electric field is formed in tubular type electricity enhancing Zero-valent Iron reaction column (5), to promote acceleration catalysis of the active zero-valent iron particle (510) to hardly degraded organic substance in waste water to reduce and significantly reduce wastewater toxicity or improve wastewater biodegradability, water outlet further handles into subsequent technique.
Description
Technical field
The invention belongs to field of waste water treatment, is related to a kind of Wastewater Pretreatment technology, particularly a kind of electrochemically strengthening zero
Valency iron waste water pretreatment system and method.
Background technology
A large amount of industrial wastewaters are produced in industrial processes, not only yield is big for such waste water, and due to industrial products
Processing, often containing a large amount of artificial synthesized classes are poisonous, harmful and hard-degraded substance in waste water, cause waste water biodegradable poor,
If directly being handled using conventional biochemical, problems be present, as waste water treatment efficiency is low, system operation is unstable, water outlet
Variation water quality is big etc..Therefore, Industrial Wastewater Treatment front end typically uses pretreatment system, such as preaeration system, anaerobic hydrolysis acid
Change etc. is modified to waste water, then carries out biochemical process processing again.
In recent years, Zero-valent Iron was widely used in sewage treatment area as a kind of environmentally friendly reducing agent.First, zero
Valency iron is widely present in nature, and price is more cheap.Further, since Zero-valent Iron has relatively low oxidation-reduction potential, it
Catalysed reductive reaction can occur with hard-degraded substance in waste water and poisonous and harmful substance, so as to be modified to waste water quality,
Wastewater toxicity is reduced, improves wastewater biological compatibility.Generally, Zero-valent Iron mainly realizes waste water by following several approach
It is modified：1. Zero-valent Iron directly participates in reproducibility reaction：Because Zero-valent Iron has relatively low oxidation-reduction potential, it can be directly as
Electron donor realizes that hard-degraded substance reduces in waste water, as chlorine-containing compound and multi chlor compound can under Zero-valent Iron reduction
Dechlorination reaction is realized, and valence heavy metal ions and reactive species can also be reduced to reduce wastewater toxicity and oxidation by Zero-valent Iron
Property, so as to improve waste water quality；2. Zero-valent Iron realizes pollutant deoxidization, degradation by producing reducing substances：Zero-valent Iron is in waste water
In be oxidized and produce a large amount of reproducibility Fe2+, H2Deng such material can also promote waste water modification；3. Zero-valent Iron can promote system to produce
Raw a large amount of ferric flocculants, such as Fe2+、Fe3+Ion, and then promote focusing particles in waste water and produce pollutant adsorption effect,
Finally realize pollutant removal.In addition, after Zero-valent Iron is handled, a large amount of iron ions are contained in waste water, this is favorably improved subsequently
Biochemical process sludge activity and settleability, improve effluent quality.Therefore, Zero-valent Iron has as organic wastewater with difficult degradation thereby pretreatment
Prospect is widely applied, but in actual application, equally exists the following aspects problem：1. reaction rate is slow, stop
Time is grown, and zeroth order iron surface is also easy to produce " concentration polarization ", causes system reaction efficiency low；2. Zero-valent Iron reduction reaction rate is difficult
With control, utilization ratio is low, has larger application limitation；3. Zero-valent Iron packing layer is easily hardened, passivation, cause wastewater effluent
It is unstable.
The content of the invention
To overcome above-mentioned technical deficiency, it is an object of the invention to provide a kind of electrochemically strengthening Zero-valent Iron Wastewater Pretreatment system
System and method.The present invention is designed by optimization of the structure of reactor, Zero-valent Iron bed is placed in additional reinforcing electric field, is passed through electric field
Strengthen Zero-valent Iron catalysis reduction, reduce wastewater toxicity, improve wastewater biodegradability, so as to realize that used water difficult to degradate is modified,
Also increase Zero-valent Iron surface ion Transport And Transformation speed and accelerate Zero-valent Iron to be catalyzed rate of reduction, avoid caused by accumulation of pollutants
Reaction efficiency it is low, the problems such as catalytic bed is hardened；And by impressed current regulation realize Zero-valent Iron accelerate catalysis reduction and
The control of reaction rate, Zero-valent Iron utilization ratio and device reaction efficiency and operability are improved, while be advantageous to save fortune
Row cost.
The present invention is a kind of electrochemically strengthening Zero-valent Iron waste water pretreatment system, and described processing system includes wastewater collection
Pond, elevator pump, strengthen Zero-valent Iron processing system, D.C. regulated power supply system；Described reinforcing Zero-valent Iron processing system is by some
The tubular type electricity enhancing Zero-valent Iron reaction column of serial or parallel connection is formed, and tubular type electricity enhancing Zero-valent Iron reaction column preferably can by control valve
Realize that serial or parallel connection mode is run, tubular type electricity enhancing Zero-valent Iron reaction column number >=2, particular number and the method for operation are according to useless
Water water, water quality are designed determination；
Described tubular type electricity enhancing Zero-valent Iron reaction column is internally provided with coaxial cylindricality graphite cathode and cartridge type Ni―Ti anode,
It is preferred that spacing, between 30~50cm, cylindricality graphite cathode and cartridge type Ni―Ti anode pass through cathode connection terminal and anode connection respectively
Terminal is connected with D.C. regulated power supply system；Between cylindricality graphite cathode and cartridge type Ni―Ti anode filled with Zero-valent Iron packing layer and by
Circular base slab is layered support, and Zero-valent Iron packing layer layering filling height is 20~40cm, and total fill able is highly tubular type electricity enhancing
The 0.7-0.8 of Zero-valent Iron reaction column；
Described circular base slab both ends are fixed with cylindricality graphite cathode, it is preferred to use insulation sleeve, outside circular base slab
Footpath is identical with cartridge type Ni―Ti anode external diameter, and inlet opening has been evenly arranged on circular base slab.
In electrochemically strengthening Zero-valent Iron waste water pretreatment system of the present invention, described tubular type electricity enhancing Zero-valent Iron is anti-
Post is answered preferably to use flange connection, its housing uses carbon steel plastic-coated or glass steel material, has stronger anti-oxidant, corrosion resistant
Corrosion energy；Described circular base slab uses hard PVC or ceramic material.
In electrochemically strengthening Zero-valent Iron waste water pretreatment system of the present invention, described Zero-valent Iron packing layer is by activity
Zero-valent iron particle is formed, and particle diameter is made in 2~3cm, active zero-valent iron particle using iron plate, iron block after being acidified by alkali cleaning, is had
There is catalytic reduction activity；Water inlet bore dia on described circular base slab is preferably 5~10mm.
Present invention also offers a kind of electrochemically strengthening Zero-valent Iron pretreatment method for wastewater, its concrete operating principle are as follows：
Waste water is pumped into by elevator pump in wastewater collection pond strengthens Zero-valent Iron processing system, and D.C. regulated power supply system is to strengthen at Zero-valent Iron
Reason system provides institute's loading current, voltage, under the conditions of applying direct current, cylindricality graphite in tubular type electricity enhancing Zero-valent Iron reaction column
Weak electric field is formed between negative electrode and cartridge type Ni―Ti anode, to promote active zero-valent iron particle to difficult degradation poisonous and harmful substance in waste water
Accelerate catalysis to reduce and significantly reduce wastewater toxicity or improve wastewater biodegradability, caused iron ion can enter one after catalysis reduction
Step promotes focusing particles precipitation and pollutant Adsorption, strengthens Zero-valent Iron processing system water outlet and enters into subsequent treatment process
The processing of one step；Wherein waste water hydraulic detention time, the electric current and voltage that apply, equal root in Zero-valent Iron processing system (3) is strengthened
Depending on water quality situation.
According to method in the present invention, waste water in Zero-valent Iron intensive treatment system hydraulic detention time control be preferably 5~
15min, depending on waste water quality situation.
According to method in the present invention, described reinforcing Zero-valent Iron processing system is loaded dc source and controlled using constant-current source
Pattern, size of current are preferably controlled in 0.5~5mA, and voltage is voluntarily adjusted according to water quality situation, and can by size of current regulation
Realize Zero-valent Iron catalysis rate of reduction control.
Compared with prior art, the present invention has following technical characterstic：
1st, the present invention is acted on by electrochemically strengthening, is accelerated Zero-valent Iron catalysis rate of reduction, is significantly reduced waste water and zero
The valency iron catalysed reactions time, shorten waste water hydraulic detention time.In addition, by optimizing structure of reactor, device uses tubular type
Flange connection, installation area is not only reduced, and be easy to device flexible operating with safeguarding.
2nd, the present invention enhances active zero-valent iron particle surface ion migration speed by applying electric field to Zero-valent Iron packing layer
Rate, avoid " concentration polarization " phenomenon；Simultaneously by electric field migration, avoid because of other materials such as colloid, metal ions
System catalytic reduction efficiency is reduced in zeroth order iron surface deposition.In addition, applying size of current by regulation, can be achieved
Zero-valent Iron catalytic reduction reaction speed control, saves operating cost.
3rd, reduction is catalyzed by electrochemically strengthening Zero-valent Iron, can not only realizes changing for difficult degradation and poisonous and harmful waste water
Property, wastewater biodegradability is improved, reduces wastewater toxicity, and system produces a large amount of iron ions after Zero-valent Iron catalysis reduction, promotes
Focusing particles precipitate in waste water, and carry out Adsorption to pollutant.If in addition, subsequently use biochemical processing process, waste water
In a large amount of iron ions be favorably improved sludge activity and settleability, and then improve effluent quality.
Brief description of the drawings
Fig. 1 is a kind of electrochemically strengthening Zero-valent Iron waste water pretreatment system of the present invention and the process chart of method.
Fig. 2 is tubular type of the present invention electricity enhancing Zero-valent Iron reaction column structural representation.
Fig. 3 is tubular type of the present invention electricity enhancing Zero-valent Iron reaction column top view.
Wherein, 1, wastewater collection pond；2nd, elevator pump；3rd, Zero-valent Iron processing system is strengthened；4th, D.C. regulated power supply system；5、
Tubular type electricity enhancing Zero-valent Iron reaction column；6th, control valve；501st, cylindricality graphite cathode；502nd, cartridge type Ni―Ti anode；503rd, Zero-valent Iron is filled out
The bed of material；504th, cathode connection terminal；505th, anode connection terminal；506th, circular base slab；507th, insulation sleeve；508th, intake
Hole；509th, housing；510th, active zero-valent iron particle.
Embodiment
With reference to specific embodiment and accompanying drawing 1~3, the invention will be further described.
As shown in Figure 1, electrochemically strengthening Zero-valent Iron waste water pretreatment system includes wastewater collection pond 1, elevator pump 2, strong
Change Zero-valent Iron processing system 3, D.C. regulated power supply system 4；Wherein, strengthen Zero-valent Iron processing system 3 is strengthened by some tubular types electricity
Zero-valent Iron reaction column 5 is formed, and tubular type electricity 5 numbers of enhancing Zero-valent Iron reaction column are 3 in Fig. 1 embodiments, as illustrated, tubular type electricity increases
Strong Zero-valent Iron reaction column 5 can realize that serial or parallel connection mode is run by control valve 6.
As shown in Figure 2, tubular type electricity enhancing Zero-valent Iron reaction column 5 uses flange connection, and its housing 509 uses carbon steel
Plastic-coated or glass steel material, there is stronger anti-oxidant, decay resistance；The inside of tubular type electricity enhancing Zero-valent Iron reaction column 5 is set
Cylindricality graphite cathode 501 and cartridge type Ni―Ti anode 502, both are using being co-axially mounted, and for spacing between 30~50cm, cylindricality graphite is cloudy
Pole 501 and cartridge type Ni―Ti anode 502 pass through cathode connection terminal 504 and anode connection terminal 505 and D.C. regulated power supply system respectively
System 4 is connected, filled with Zero-valent Iron packing layer 503 and by circular base slab between cylindricality graphite cathode 501 and cartridge type Ni―Ti anode 502
506 layering supports, Zero-valent Iron packing layer 503 are made up of active zero-valent iron particle 510, and particle diameter is in 2~3cm, active Zero-valent Iron
Grain 510 is made using iron plate, iron block after being acidified by alkali cleaning, has catalytic reduction activity, the layering filling of Zero-valent Iron packing layer 503
Highly it is 20~40cm, total fill able is highly 3/4 or so of tubular type electricity enhancing Zero-valent Iron reaction column 5.
As shown in accompanying drawing 2 and accompanying drawing 3, circular base slab 506 uses hard PVC or ceramic material, and both ends use edge insulator
Set 507 is fixed with cylindricality graphite cathode 501, and the external diameter of circular base slab 506 is identical with the external diameter of cartridge type Ni―Ti anode 502, and its top is equal
It is even to be disposed with inlet opening 508,508 a diameter of 5~10mm of inlet opening.
With reference to accompanying drawing 1 and accompanying drawing 2 to electrochemically strengthening Zero-valent Iron waste water pretreatment system method of work of the present invention
It is described below：Waste water is pumped into by elevator pump 2 in wastewater collection pond 1 strengthens Zero-valent Iron processing system 3, D.C. regulated power supply system
System 4 provides constant-current source control model direct current to strengthen Zero-valent Iron processing system 3, and size of current is controlled in 0.5~5mA, voltage
Voluntarily adjusted according to water quality situation, under the conditions of applying direct current, the He of cylindricality graphite cathode 501 in tubular type electricity enhancing Zero-valent Iron 5
Weak electric field is formed between cartridge type Ni―Ti anode 502, to promote active zero-valent iron particle 510 to difficult degradation poisonous and harmful substance in waste water
Accelerate catalysis to reduce and significantly reduce wastewater toxicity or improve wastewater biodegradability, caused iron ion can enter one after catalysis reduction
Step promotes focusing particles precipitation and pollutant Adsorption, while is adjusted by size of current and Zero-valent Iron catalysis reduction can be achieved
Speed control, hydraulic detention time general control is in 5~15min in Zero-valent Iron intensive treatment system 3 for waste water, with specific reference to useless
Depending on water water quality situation, the water outlet of Zero-valent Iron intensive treatment system 3 is further handled into subsequent treatment process.
Embodiment one：
Drugmaker of Zhejiang Province pharmacy waste water yield is about 80m3/h, and waste water COD is 808~1031mg/L, NH4 +-N
For 50~60mg/L, company's raw sewage processing system is anaerobic hydrolysis-acidification+A2/ O techniques, but plant running less stable,
Effluent quality fluctuation is larger；It the analysis showed that, raw wastewater BOD is between 180~243mg/L, and B/C is less than 0.25, i.e. waste water can
Biochemical is poor, and contains a large amount of hard-degraded substances and poisonous and harmful substance in waste water, such as chlorohydrocarbon, chlorinated aromatic hydrocarbons and organochlorine
Bactericide etc., cause sludge activity not high, settleability is poor.At present, Process for Effluent COD is 123~230mg/L, BOD is 22~
41mg/L, NH4 +- N is 23~38mg/L, and SS is 53~91mg/L, and company intends carrying out upgrading to existing process, to meet reality
Border production needs.
Using electrochemically strengthening Zero-valent Iron waste water pretreatment system of the present invention to company anaerobic hydrolysis-acidification+A2/ O techniques are entered
Water is pre-processed.Wherein, cylindricality graphite cathode 501 and cartridge type Ni―Ti anode in electrochemically strengthening Zero-valent Iron waste water pretreatment system
502 spacing is 45cm, and the active particle diameter of zero-valent iron particle 510 is 2.3~3.0cm, and the layering of Zero-valent Iron packing layer 503 filling is highly
For 30cm, 508 a diameter of 8mm of inlet opening；Waste water hydraulic retention 8min in Zero-valent Iron intensive treatment system, at Zero-valent Iron reinforcing
It is 2mA that reason system, which loads direct current size, and voltage is about 0.9v, after the processing of preprocessed system, water outlet BOD 380~
450mg/L, B/C=0.43~0.47, namely after electrochemically strengthening Zero-valent Iron waste water pretreatment system of the present invention processing, waste water
Toxicity substantially reduces, and biodegradability significantly improves, and pretreatment system water outlet is again through former PROCESS FOR TREATMENT, its water outlet COD≤100mg/
L, NH4 +- N≤20mg/L, SS≤50mg/L, water outlet meet《Chemical synthesis class pharmaceuticals industry pollution discharge standard》.
Embodiment two：
Inner Mongol Coking Plant Wastewater amount is about 200m3/ h, at present, using anaerobic hydrolysis-acidification+oxidation ditch treatment technique
Wastewater treatment is carried out, but due to containing difficult degradation and the poisonous and harmful substances such as a large amount of phenols, benzene class, wastewater biodegradability in waste water
It is poor, and PROCESS FOR TREATMENT is unstable, effluent quality fluctuation is larger, and enterprise intends carrying out technique upgrading, steady to improve system
It is qualitative.Small-scale experiment has been carried out to the Coking Plant Wastewater using electrochemically strengthening Zero-valent Iron waste water pretreatment system of the present invention, it is small
It is about 20L/h to try unit capacity, wherein, the He of cylindricality graphite cathode 501 in electrochemically strengthening Zero-valent Iron waste water pretreatment system
The spacing of cartridge type Ni―Ti anode 502 is 30cm, and the active particle diameter of zero-valent iron particle 510 is 2.2cm or so, and Zero-valent Iron packing layer 503 divides
Layer filling height is 20cm, 508 a diameter of 5mm of inlet opening, waste water hydraulic retention 12min in Zero-valent Iron intensive treatment system,
The control of DC current size is loaded in 0.8mA, voltage 0.5v；Coking Plant Wastewater COD is 523~752mg/L, and BOD is about
95~163mg/L, B/C are between 0.18~0.24, and after being processed, water outlet BOD is about 182~280mg/L, and B/C is promoted to
0.32~0.37, namely after present invention process is handled, wastewater biodegradability is remarkably reinforced, so as to be advantageous to subsequent biochemical technique
Final process is carried out to it.
Claims (10)
1. a kind of electrochemically strengthening Zero-valent Iron waste water pretreatment system, it is characterised in that described waste water pretreatment system includes
Wastewater collection pond (1), elevator pump (2), strengthen Zero-valent Iron processing system (3), D.C. regulated power supply system (4)；Described reinforcing
Zero-valent Iron processing system (3) is made up of the tubular type electricity enhancing Zero-valent Iron reaction column (5) of some serial or parallel connections；Tubular type electricity enhancing zero
Number >=2 of valency iron reaction column (5), particular number and the method for operation are designed determination according to waste water water, water quality；
Described tubular type electricity enhancing Zero-valent Iron reaction column (5) is internally provided with coaxial cylindricality graphite cathode (501) and cartridge type titanium
Anode (502), cylindricality graphite cathode (501) and cartridge type Ni―Ti anode (502) are connect by cathode connection terminal (504) and anode respectively
Line terminals (505) are connected with D.C. regulated power supply system (4)；Filled out between cylindricality graphite cathode (501) and cartridge type Ni―Ti anode (502)
Support is layered filled with Zero-valent Iron packing layer (503) and by circular base slab (506), total fill able is highly tubular type electricity enhancing Zero-valent Iron
The 7/10-4/5 of reaction column (5)；
Described circular base slab (506) both ends are fixed with cylindricality graphite cathode (501), circular base slab (506) external diameter and cylinder
Formula Ni―Ti anode (502) external diameter is identical, and inlet opening (508) has been evenly arranged on circular base slab (506).
2. system according to claim 1, it is characterised in that：Tubular type electricity enhancing Zero-valent Iron reaction column (5) passes through control valve
(6) the serial or parallel connection method of operation is realized.
3. system according to claim 1, it is characterised in that：Described tubular type electricity enhancing Zero-valent Iron reaction column (5) uses
Flange connection, its housing (509) use carbon steel plastic-coated or glass steel material.
4. system according to claim 1, it is characterised in that：Described circular base slab (506) uses hard PVC or pottery
Porcelain material, both ends are fixed with cylindricality graphite cathode (501) using insulation sleeve (507).
5. system according to claim 1, it is characterised in that：Cylindricality graphite cathode (501) and cartridge type Ni―Ti anode (502)
Spacing is between 30~50cm.
6. system according to claim 1, it is characterised in that：Described Zero-valent Iron packing layer (503) is by active Zero-valent Iron
Particle (510) forms, and grain diameter is 2~3cm, after active zero-valent iron particle (510) is acidified using iron plate, iron block by alkali cleaning
It is made, there is catalytic reduction activity；Described inlet opening (508) a diameter of 5~10mm.
7. system according to claim 1, it is characterised in that：Described Zero-valent Iron packing layer (503) layering filling height
For 20~40cm.
A kind of 8. electrochemically strengthening Zero-valent Iron pretreatment method for wastewater, it is characterised in that：Entered using the system described in claim 1
Row Wastewater Pretreatment, waste water is pumped into by elevator pump (2) in wastewater collection pond (1) strengthens Zero-valent Iron processing system (3), DC voltage-stabilizing
Power-supply system (4) provides institute's on-load voltage, electric current, under the conditions of applying direct current, tubular type to strengthen Zero-valent Iron processing system (3)
Weak electric field is formed between cylindricality graphite cathode (501) and cartridge type Ni―Ti anode (502) in electricity enhancing Zero-valent Iron reaction column (5), to promote
Enter active zero-valent iron particle (510) to accelerate catalysis to reduce difficult degradation poisonous and harmful substance in waste water and significantly reduce wastewater toxicity
Or wastewater biodegradability is improved, caused iron ion can further promote focusing particles precipitation and pollutant to inhale after catalysis reduction
Attached removal, strengthen Zero-valent Iron processing system (3) water outlet and further handled into subsequent treatment process；Waste water is being strengthened at Zero-valent Iron
Hydraulic detention time, the electric current and voltage that apply in reason system (3), depending on water quality situation.
9. electrochemically strengthening Zero-valent Iron pretreatment method for wastewater according to claim 8, it is characterised in that：Waste water is being strengthened
Hydraulic detention time control is in 5~15min in Zero-valent Iron processing system (3).
10. electrochemically strengthening Zero-valent Iron pretreatment method for wastewater according to claim 8, it is characterised in that：Described is strong
Change Zero-valent Iron processing system (3) institute loading dc source and use constant-current source control model, size of current control is in 0.5~5mA, electricity
Voluntarily adjusted according to water quality situation at all, and realize that Zero-valent Iron is catalyzed rate of reduction and controlled by size of current regulation.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109078931A (en) * | 2018-08-03 | 2018-12-25 | 西安热工研究院有限公司 | The dynamic simulation tester and application method of high temperature gas cooled reactor nuclear power unit secondary circuit chemical cleaning |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060231415A1 (en) * | 2002-05-01 | 2006-10-19 | Christensen Paul A | Electrolysis cell and method |
| CN102276023A (en) * | 2011-06-21 | 2011-12-14 | 舒振华 | Method for treating organic dyestuff in wastewater |
| CA2542313C (en) * | 2003-10-10 | 2012-12-04 | Ohio University | Electro-catalysts for the oxidation of ammonia in alkaline media |
| CN106477689A (en) * | 2016-11-14 | 2017-03-08 | 中国科学院生态环境研究中心 | A kind of based on electric field-enhanced Zero-valent Iron process for purifying water and reactor |
-
2017
- 2017-11-09 CN CN201711095740.8A patent/CN107739071A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060231415A1 (en) * | 2002-05-01 | 2006-10-19 | Christensen Paul A | Electrolysis cell and method |
| CA2542313C (en) * | 2003-10-10 | 2012-12-04 | Ohio University | Electro-catalysts for the oxidation of ammonia in alkaline media |
| CN102276023A (en) * | 2011-06-21 | 2011-12-14 | 舒振华 | Method for treating organic dyestuff in wastewater |
| CN106477689A (en) * | 2016-11-14 | 2017-03-08 | 中国科学院生态环境研究中心 | A kind of based on electric field-enhanced Zero-valent Iron process for purifying water and reactor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109078931A (en) * | 2018-08-03 | 2018-12-25 | 西安热工研究院有限公司 | The dynamic simulation tester and application method of high temperature gas cooled reactor nuclear power unit secondary circuit chemical cleaning |
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