CN109851116A - A kind of technique that the reverse osmosis concentrated organic pollutants of coking wastewater are handled using electro-catalysis-electricity Fenton collaboration - Google Patents
A kind of technique that the reverse osmosis concentrated organic pollutants of coking wastewater are handled using electro-catalysis-electricity Fenton collaboration Download PDFInfo
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- 239000002351 wastewater Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 32
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- 238000004939 coking Methods 0.000 title claims abstract description 29
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- 238000011282 treatment Methods 0.000 claims abstract description 17
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- 238000007254 oxidation reaction Methods 0.000 claims description 19
- 239000000126 substance Substances 0.000 claims description 19
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- 238000004062 sedimentation Methods 0.000 claims description 13
- 229910052799 carbon Inorganic materials 0.000 claims description 11
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 10
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Abstract
The present invention provides a kind of using electro-catalysis-electricity Fenton collaboration processing coking wastewater reverse osmosis concentrated organic pollutants technique, which mainly passes through pH and adjust unit, ultrasound unit, electro-catalysis-electricity Fenton unit, neutralize adjusting unit and flocculation unit.Reverse osmosis concentrated water is introduced into pH and adjusts unit adjusting pH value in process, enter in ultrasound unit later and carries out sonicating processing, enter electro-catalysis-electricity Fenton unit degradable organic pollutant later, enter to neutralize later and adjust unit addition medicament neutralization, finally enters flocculation unit and further remove organic matter.The reaction condition for the treatment of process of the invention is simple, the energy reverse osmosis concentrated organic pollutants of efficient degradation, so that standard water discharge is discharged.
Description
Technical field
The invention belongs to Treatment of Industrial Water technical fields, are related to a kind of reverse osmosis concentrated organic pollutants of coking wastewater factory
Reasonable sanding method more particularly to it is a kind of handled using electro-catalysis-electricity Fenton collaboration it is organic in coking wastewater reverse osmosis concentrated water
The technique of pollutant.
Background technique
Coking wastewater is a kind of industrial wastewater of water-quality constituents complexity high concentration, wherein containing phenol, ammonia nitrogen, cyanogen, benzene, pyrrole
Tens kinds of organic pollutants such as pyridine, indoles and quinoline.Coking wastewater two stage treatment is frequently with " biochemistry+coagulating sedimentation ", after processing
COD is up to discharge standard.From the point of view of the long term growth of Treatment of Coking Effluent, continue advanced treating after biochemical using as circulation
Cooling water, which uses, becomes mainstream.Reverse osmosis (RO) technology has become many industry sewage treatments and recycles water depth Treatment for Reuse
One preferred technique, the processing of the following reverse osmosis concentrated water have become one of the most important technical restriction factor of its application.
COD content is high in coking wastewater reverse osmosis concentrated water, and is substantially all difficult for biological degradation organic pollutant, these have
Machine matter toxicity is high, and property and its stabilization, routine biochemistry, materilization freatment method are difficult to cause to imitate, and high-level oxidation technology is in the difficult drop of removal
Organic pollutant is solved, is used widely in terms of improving wastewater biodegradability.Coking wastewater RO concentrated water salt content height, electric conductivity
Good, inherently a kind of excellent electrolyte solution provides the foundation condition for electrocatalytic oxidation technique.But single technology
Treatment effect is limited, is extremely difficult to ideal removal effect, and electrocatalytic oxidation process is also just with the electrochemistry of anode
Process, current efficiency is low, and energy consumption is high.If can be produced while anode carries out electrocatalysis oxidation reaction using cathodic reduction O2
Raw H2O2, by constructing Fenton system, the association reacted using anode electrocatalytic oxidation with cathode Fenton with additional Fe2+
Same-action strengthens the degradation process of organic matter, while can greatly promote current efficiency, reduces energy consumption.
Summary of the invention
It is a kind of using in electro-catalysis-electricity Fenton collaboration processing coking wastewater reverse osmosis concentrated water it is an object of the invention to design
The technique of organic pollutant, solves the above problems.
To achieve the goals above, The technical solution adopted by the invention is as follows:
Kind is special using electro-catalysis-electricity Fenton collaboration processing coking wastewater reverse osmosis concentrated organic pollutants technique
Sign is, comprises the following steps that:
Step (1), pH value are adjusted: reverse osmosis concentrated water first flows into pH conditioning tank, adjusts pH value to 2.5~5.5；
Step (2), ultrasonic treatment: the concentrated stream of pH adjusted pond outflow enters ultrasound unit, and the ultrasound unit is ultrasound
Reaction unit, acoustic cavitation effect under, the supersonic reaction device make organic pollutant occur advanced oxidation, pyrolysis and/or
Supercritical oxidation, and then the organic pollutant is made to obtain initial breakdown；
Step (3) electro-catalysis-electricity Fenton processing: enters electro-catalysis-electricity through the processed concentrated water of the supersonic reaction device
Fenton unit occurs oxidation reaction in anode and generates the intermediate product with strong oxidizing property, and the intermediate product oxidative degradation has
Machine object pollutant；It is aerated near cathode, cathode surface persistently generates H2O2With additional Fe2+Constitute electric Fenton-like system, collaboration
Enhancing degradation organic matter；
Step (4) is neutralized and is adjusted: being entered neutralization conditioning tank through electro-catalysis-electricity Fenton cell processing concentrated water, is adjusted pH value
To 8~9；
Step (5), flocculation treatment: in and the waste water of conditioning tank discharge enters flocculation unit, by the way that flocculant hair is added
Raw flocculation reaction, soluble organic matter settles together in colloid and suspended matter the absorption water of formation, after after flocculation treatment
Concentrated water is expelled directly out.
Preferably, in step (2), the hydraulic detention time of the supersonic reaction device is 5-20min.
Preferably, the supersonic reaction device is equipped with supersonic generator, the supersonic frequency that the supersonic generator generates
Rate is 1-10MHz.
Preferably, in step (3), the electro-catalysis-electricity Fenton unit includes electrochemical reactor, the electrochemical reaction
Device hydraulic detention time 30-120min, the water inlet end of the electrochemical reactor are connected with the supersonic reaction device, the electricity
The water outlet of chemical reactor is connected with the neutralization conditioning tank.
Preferably, the electrochemical reactor, including electrolytic cell, constant voltage dc source, cathode plate and anode plate；The sun
Pole plate is parallel to each other with cathode plate and intersects, and is vertically arranged in electrolytic cell, and the anode plate and the constant voltage dc source
Anode be connected, the cathode plate is connected with the cathode of the constant voltage dc source.
Preferably, the anode plate uses metal oxide electrode, and pole plate coating selects metal oxide or ion to mix
Miscellaneous type metal oxide；The cathode plate uses carbon electrode, and the carbon electrode uses graphite, carbon-polytetrafluoroethylene (PTFE) gas diffusion
Electrode, carbon felt, activated carbon fibre or carbon nanotube.
Preferably, the constant voltage dc source output electric current is 20002-6000A, anode and cathode in the electrochemical reactor
The logarithm of plate is 10-50 pairs, and the spacing of the anode plate and the cathode plate is 2-10cm.
Preferably, the front end of the electrochemical reactor is equipped with chemicals dosing plant, and the cathode plate nearby sets aerator.
Preferably, the medicament added in the chemicals dosing plant is FeSO4Solution, dosage 0.05-0.5g/L；The exposure
The aeration quantity of device of air is 50-150L/min.
Preferably, in step (5), the flocculation sedimentation unit is flocculation sedimentation tank, the water inlet of the flocculation sedimentation tank
Chemicals dosing plant is equipped at mouthful, the flocculant added is polyacrylamide.
Beneficial effect of the present invention can be summarized as follows:
1, the present invention is a kind of using electro-catalysis-electricity Fenton collaboration processing reverse osmosis concentrated organic pollutants of coking wastewater
Technique reaction condition it is simple, can the reverse osmosis concentrated organic pollutants of efficient degradation so that standard water discharge discharge.
2, the present invention is a kind of using electro-catalysis-electricity Fenton collaboration processing reverse osmosis concentrated organic pollutants of coking wastewater
The characteristics of salt content is high, good conductivity of process makes full use coking wastewater reverse osmosis concentrated water, select suitable plate material,
The degradable organic pollutant under anode electrocatalytic oxidation and the synergistic effect of cathode electro-Fenton oxidation, improves the degradation of organic matter
Efficiency improves current efficiency, reduces energy consumption.
3, the present invention is a kind of using electro-catalysis-electricity Fenton collaboration processing reverse osmosis concentrated organic pollutants of coking wastewater
Technique be not necessarily to additional hydrogen peroxide, H can be saved2O2Preparation, transport and storage etc. spend, reduce processing cost.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Specific embodiment
In order to which the technical problems, technical solutions and beneficial effects solved by the present invention is more clearly understood, below in conjunction with
Accompanying drawings and embodiments, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein only to
It explains the present invention, is not intended to limit the present invention.
As shown in Figure 1 is a kind of using organic contamination in electro-catalysis-electricity Fenton collaboration processing coking wastewater reverse osmosis concentrated water
The technique of object, including
It comprises the following steps that:
Step (1), pH value are adjusted: reverse osmosis concentrated water first flows into pH conditioning tank, adjusts pH value to 2.5~5.5；
Step (2), ultrasonic treatment: the concentrated stream of pH adjusted pond outflow enters ultrasound unit, and the ultrasound unit is ultrasound
Reaction unit, acoustic cavitation effect under, the supersonic reaction device make organic pollutant occur advanced oxidation, pyrolysis and/or
Supercritical oxidation, and then the organic pollutant is made to obtain initial breakdown；
Step (3) electro-catalysis-electricity Fenton processing: enters electro-catalysis-electricity through the processed concentrated water of the supersonic reaction device
Fenton unit occurs oxidation reaction in anode and generates the intermediate product with strong oxidizing property, and the intermediate product oxidative degradation has
Machine object pollutant；It is aerated near cathode, cathode surface persistently generates H2O2With additional Fe2+Constitute electric Fenton-like system, collaboration
Enhancing degradation organic matter；
Step (4) is neutralized and is adjusted: being entered neutralization conditioning tank through electro-catalysis-electricity Fenton cell processing concentrated water, is adjusted pH value
To 8~9；
Step (5), flocculation treatment: in and the waste water of conditioning tank discharge enters flocculation unit, by the way that flocculant hair is added
Raw flocculation reaction, soluble organic matter settles together in colloid and suspended matter the absorption water of formation, after after flocculation treatment
Concentrated water is expelled directly out.
In more preferred embodiment, in step (2), the hydraulic detention time of the supersonic reaction device is 5-
20min。
In more preferred embodiment, the supersonic reaction device is equipped with supersonic generator, and the ultrasonic wave occurs
The supersonic frequency that device generates is 1-10MHz.
In more preferred embodiment, in step (3), the electro-catalysis-electricity Fenton unit includes electrochemical reactor,
The electrochemical reactor hydraulic detention time 30-120min, the water inlet end of the electrochemical reactor and the ultrasonic reaction
Device is connected, and the water outlet of the electrochemical reactor is connected with the neutralization conditioning tank.
In more preferred embodiment, the electrochemical reactor, including electrolytic cell, constant voltage dc source, cathode plate
And anode plate；The anode plate is parallel to each other with cathode plate to intersect, and is vertically arranged in electrolytic cell, and the anode plate and institute
The anode for stating constant voltage dc source is connected, and the cathode plate is connected with the cathode of the constant voltage dc source.
In more preferred embodiment, the anode plate uses metal oxide electrode, and pole plate coating selects metal oxygen
Compound or ion doping type metal oxide；The cathode plate uses carbon electrode, and the carbon electrode uses graphite, carbon-poly- four
Vinyl fluoride gas-diffusion electrode, carbon felt, activated carbon fibre or carbon nanotube.
In more preferred embodiment, the constant voltage dc source output electric current is 2000-6000A, the electrochemistry
The logarithm of cathode-anode plate is 10-50 pairs in reactor, and the spacing of the anode plate and the cathode plate is 2-10cm.
In more preferred embodiment, the front end of the electrochemical reactor is equipped with chemicals dosing plant, and the cathode plate is attached
Closely set aerator.
In more preferred embodiment, the medicament added in the chemicals dosing plant is FeSO4Solution, dosage are
0.05-0.5g/L；The aeration quantity of the aerator is 50-150L/min.
In more preferred embodiment, in step (5), the flocculation sedimentation unit is flocculation sedimentation tank, the wadding
The water inlet of solidifying sedimentation basin is equipped with chemicals dosing plant, and the flocculant added is polyacrylamide.
A kind of technique handling the reverse osmosis concentrated organic pollutants of coking wastewater using electro-catalysis-electricity Fenton collaboration, should
Process flow mainly passes through pH and adjusts unit, ultrasound unit, electro-catalysis-electricity Fenton unit, neutralizes adjusting unit and flocculation unit,
It mainly comprises the steps that
Step (1), pH value are adjusted: reverse osmosis concentrated water flows into pH conditioning tank through tank, passes through H2SO4Solution is by pH value
It adjusts to 2.5~5.5；
Step (2), ultrasonic treatment: the concentrated stream of pH adjusted pond outflow enters ultrasound unit, and ultrasound unit uses ultrasonic wave
Generator cleans the concentrated water of entrance, efficient ultrasonic is handled, under acoustic cavitation effect, so that organic pollutant generation is advanced
Oxidation, pyrolysis and/or supercritical oxidation obtain initial breakdown in turn, promote subsequent processing efficiency；
Step (3) electro-catalysis-electricity Fenton processing: enters electro-catalysis-electricity Fenton through the processed concentrated water of supersonic reaction device
In the electrochemical reactor of unit, water occurs oxidation reaction in anode plate and generates the strong oxidizing properties intermediate products such as OH, product
Oxidative degradation organic pollutant；It is provided with aerator near cathode to be aerated, cathode surface persistently generates H2O2With it is outer
The Fe added2+Constitute electric Fenton-like system, cooperative reinforcing degradation organic matter；
Step (4) is neutralized and is adjusted: being entered neutralization conditioning tank through electro-catalysis-electricity Fenton cell processing concentrated water, is adjusted pH value
To 8~9；
Step (5), flocculation treatment: the concentrated water after charge neutrality is adjusted enters flocculation unit, and flocculation unit is heavy using flocculation
Shallow lake pond, the chemicals dosing plant being arranged by the water inlet of flocculation sedimentation tank, adds flocculant PAM in flocculation sedimentation tank, makes its hair
Flocculation reaction is given birth to, soluble organic matter settles together in the colloid and suspended matter and absorption water of formation, organic matter is further removed,
Reduce delivery turbidity, after waste water after flocculation treatment be directly discharged into discharge bay.
The front end of electrochemical reactor is equipped with chemicals dosing plant, and adding medicament is FeSO4Solution, dosage 0.05-0.5g/
L。
The supersonic frequency of supersonic generator is 1-10MHz, hydraulic detention time 5-20min.
Electrochemical reactor hydraulic detention time 30-120min, the water inlet end and supersonic reaction device of electrochemical reactor
It is connected, the water outlet of electrochemical reactor is connected with conditioning tank is neutralized.
Electrochemical reactor includes electrolytic cell, constant voltage dc source, cathode plate and anode plate；Anode plate is mutual with cathode plate
It intersects, is vertically arranged in electrolytic cell in parallel, and anode plate is connected with the anode of constant voltage dc source, cathode plate is straight with pressure stabilizing
The cathode in galvanic electricity source is connected.Yin, yang pole plate logarithm is 10-50 pairs in electrochemical reactor, and the spacing of anode plate and cathode plate
For 2-10cm；Anode plate uses metal oxide electrode (DSA electrode), the metal oxide that pole plate coating selects oxygen evolution potential high
Or ion doping type oxide, such as Ti/Ti4O7Electrode, Ti/SnO2- Sb electrode etc.；Cathode plate uses carbon electrode, as stone
Ink, carbon-polytetrafluoroethylene (PTFE) (PTFE) gas-diffusion electrode, carbon felt, activated carbon fibre (ACF) or carbon nanotube (CNT) etc.
It is a kind of.It is 2000-6000A that constant voltage dc source, which exports electric current,.
Concrete case: by certain Treatment of Coking Effluent factory after biochemical treatment for advanced treating reverse osmosis concentrated water, in concentrated water
COD content is 280-320mg/L, and conductivity of waste water is 18000-24000 μ S/cm.
Embodiment 1:
By reverse osmosis concentrated water in pH conditioning tank H2SO4PH to 2.5-3.5 is adjusted, into ultrasound unit, supersonic frequency is
2MHz, initial breakdown organic pollutant and promotion water temperature, ultrasonic time 20min, effluent COD concentration 270-310mg/L.
Ultrasound unit water outlet enters electrochemical reactor.Chemicals dosing plant is set in electrochemical reactor water inlet end, is added
FeSO4, dosage 0.1g/L.With Ti/Ti4O7Electrode is anode, and C/PTEE electrode is cathode, respectively with constant voltage dc source
Positive and negative anodes are connected, and adjusting direct current of voltage regulation ource electric current is 2000A, and pole plate logarithm 10 is right, pole plate spacing 10cm, are mentioned by aeration
For air, oxygenation rate 50L/min, hydraulic detention time 60min.After water outlet adjusts pH to 8-9, flocculant PAM is added, oblique
It is precipitated in plate sedimentation basin, water outlet COD content is 70-90mg/L, reaches the requirement of integrated wastewater discharge standard secondary standard.
Embodiment 2:
By reverse osmosis concentrated water in pH conditioning tank H2SO4PH to 3.5-4.5 is adjusted, into ultrasound unit, supersonic frequency is
6MHz, initial breakdown organic pollutant and promotion water temperature, ultrasonic time 10min, effluent COD concentration 270-310mg/L.
Ultrasound unit water outlet enters electrochemical reactor.Chemicals dosing plant is set in electrochemical reactor water inlet end, is added
FeSO4, dosage 0.1g/L.With Ti/Ti4O7Electrode is anode, and C/PTEE electrode is cathode, respectively with constant voltage dc source
Positive and negative anodes are connected, and adjusting direct current of voltage regulation ource electric current is 4000A, and pole plate logarithm 20 is right, pole plate spacing 5cm, are mentioned by aeration
For air, oxygenation rate 100L/min, hydraulic detention time 30min.After water outlet adjusts pH to 8-9, flocculant PAM is added,
It is precipitated in inclined-plate clarifying basin, water outlet COD content is 60-80mg/L, reaches the requirement of integrated wastewater discharge standard secondary standard.
Embodiment 3:
By reverse osmosis concentrated water in pH conditioning tank H2SO4PH to 4.5-5.5 is adjusted, into ultrasound unit, supersonic frequency is
10MHz, initial breakdown organic pollutant and promotion water temperature, ultrasonic time 5min, effluent COD concentration 265-305mg/L.
Ultrasound unit water outlet enters electrochemical reactor.Chemicals dosing plant is set in electrochemical reactor water inlet end, is added
FeSO4, dosage 0.1g/L.With Ti/Ti4O7Electrode is anode, and C/PTEE electrode is cathode, respectively with constant voltage dc source
Positive and negative anodes are connected, and adjusting direct current of voltage regulation ource electric current is 6000A, and pole plate logarithm 50 is right, pole plate spacing 2cm, are mentioned by aeration
For air, oxygenation rate 150L/min, hydraulic detention time 15min.After water outlet adjusts pH to 8-9, flocculant PAM is added,
It is precipitated in inclined-plate clarifying basin, water outlet COD content is 75-95mg/L, reaches the requirement of integrated wastewater discharge standard secondary standard.
Comparative example 1:
By reverse osmosis concentrated water in pH conditioning tank H2SO4PH to 3.5-4.5 is adjusted, electrochemical reactor is directly entered.In electricity
Chemicals dosing plant is arranged in chemical reactor water inlet end, adds FeSO4, dosage 0.1g/L.With Ti/Ti4O7Electrode is anode, C/
PTEE electrode is cathode, is connected respectively with constant voltage dc source positive and negative anodes, and adjusting direct current of voltage regulation ource electric current is 4000A, pole
Plate logarithm 20 is right, pole plate spacing 5cm, provides air, oxygenation rate 100L/min, hydraulic detention time 30min by aeration.Out
After water adjusts pH to 8-9, flocculant PAM is added, is precipitated in inclined-plate clarifying basin, water outlet COD content is 160-180mg/L.
Comparative example 2:
By reverse osmosis concentrated water in pH conditioning tank H2SO4PH to 3.5-4.5 is adjusted, into ultrasound unit, supersonic frequency is
6MHz, initial breakdown organic pollutant and promotion water temperature, ultrasonic time 10min, effluent COD concentration 270-310mg/L.
Ultrasound unit water outlet enters electrochemical reactor.Chemicals dosing plant is set in electrochemical reactor water inlet end, is added
FeSO4, dosage 0.1g/L.With Ti/Ti4O7Electrode is anode, and stainless steel electrode is cathode, respectively with constant voltage dc source
Positive and negative anodes are connected, and adjusting direct current of voltage regulation ource electric current is 4000A, and pole plate logarithm 20 is right, pole plate spacing 5cm, are mentioned by aeration
For air, oxygenation rate 100L/min, hydraulic detention time 30min.After water outlet adjusts pH to 8-9, flocculant PAM is added,
It is precipitated in inclined-plate clarifying basin, water outlet COD content is 130-150mg/L, reaches the requirement of integrated wastewater discharge standard secondary standard.
Comparative example 3:
Reverse osmosis concentrated water is adjusted into pH to 3.5-4.5 in pH conditioning tank H2SO4, into ultrasound unit, supersonic frequency is
6MHz, initial breakdown organic pollutant and promotion water temperature, ultrasonic time 10min, effluent COD concentration 270-310mg/L.
Ultrasound unit water outlet enters electrochemical reactor.Chemicals dosing plant is set in electrochemical reactor water inlet end, is added
FeSO4, dosage 0.1g/L.Using stainless steel plate as anode, C/PTEE electrode is cathode, positive and negative with constant voltage dc source respectively
Pole is connected, and adjusting direct current of voltage regulation ource electric current is 4000A, and pole plate logarithm 20 is right, pole plate spacing 5cm, is provided by aeration empty
Gas, oxygenation rate 100L/min, hydraulic detention time 30min.After water outlet adjusts pH to 8-9, flocculant PAM is added, in inclined plate
It is precipitated in sedimentation basin, water outlet COD content is 170-190mg/L.
The present invention is described in detail above by specific and preferred embodiment, but those skilled in the art should be bright
White, the present invention is not limit to that embodiments describe above, all within the spirits and principles of the present invention, made any modification,
Equivalent replacement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. it is a kind of using electro-catalysis-electricity Fenton collaboration processing coking wastewater reverse osmosis concentrated organic pollutants technique, it is special
Sign is, comprises the following steps that:
Step (1), pH value are adjusted: reverse osmosis concentrated water first flows into pH conditioning tank, adjusts pH value to 2.5~5.5；
Step (2), ultrasonic treatment: the concentrated stream of pH adjusted pond outflow enters ultrasound unit, and the ultrasound unit is ultrasonic reaction
Device, under acoustic cavitation effect, the supersonic reaction device makes organic pollutant that advanced oxidation, pyrolysis occur and/or surpass to face
Boundary's oxidation, and then the organic pollutant is made to obtain initial breakdown；
Step (3) electro-catalysis-electricity Fenton processing: enters electro-catalysis-electricity Fenton through the processed concentrated water of the supersonic reaction device
Unit occurs oxidation reaction in anode and generates the intermediate product with strong oxidizing property, the intermediate product oxidative degradation organic matter
Pollutant；It is aerated near cathode, cathode surface persistently generates H2O2With additional Fe2+Constitute electric Fenton-like system, cooperative reinforcing
Degradation organic matter；
Step (4) is neutralized and is adjusted: being entered neutralization conditioning tank through electro-catalysis-electricity Fenton cell processing concentrated water, is adjusted pH value to 8
~9；
Step (5), flocculation treatment: in and the waste water of conditioning tank discharge enters flocculation unit, is wadded a quilt with cotton by the way that flocculant is added
Solidifying reaction, soluble organic matter settles together in colloid and suspended matter the absorption water of formation, after concentrated water after flocculation treatment
It is expelled directly out.
2. a kind of cooperateed in processing coking wastewater reverse osmosis concentrated water using electro-catalysis-electricity Fenton according to claim 1 is had
The technique of machine pollutant, it is characterised in that: in step (2), the hydraulic detention time of the supersonic reaction device is 5-20min.
3. a kind of cooperateed in processing coking wastewater reverse osmosis concentrated water using electro-catalysis-electricity Fenton according to claim 2 is had
The technique of machine pollutant, it is characterised in that: the supersonic reaction device is equipped with supersonic generator, and the supersonic generator produces
Raw supersonic frequency is 1-10MHz.
4. a kind of cooperateed in processing coking wastewater reverse osmosis concentrated water using electro-catalysis-electricity Fenton according to claim 1 is had
The technique of machine pollutant, it is characterised in that: in step (3), the electro-catalysis-electricity Fenton unit includes electrochemical reactor, institute
Electrochemical reactor hydraulic detention time 30-120min is stated, the water inlet end of the electrochemical reactor and the ultrasonic reaction fill
Set connected, the water outlet of the electrochemical reactor is connected with the neutralization conditioning tank.
5. a kind of cooperateed in processing coking wastewater reverse osmosis concentrated water using electro-catalysis-electricity Fenton according to claim 4 is had
The technique of machine pollutant, it is characterised in that: the electrochemical reactor, including electrolytic cell, constant voltage dc source, cathode plate and sun
Pole plate；The anode plate is parallel to each other with cathode plate to intersect, and is vertically arranged in electrolytic cell, and the anode plate and described steady
The anode of DC power supply is pressed to be connected, the cathode plate is connected with the cathode of the constant voltage dc source.
6. a kind of cooperateed in processing coking wastewater reverse osmosis concentrated water using electro-catalysis-electricity Fenton according to claim 5 is had
The technique of machine pollutant, it is characterised in that: the anode plate uses metal oxide electrode, and pole plate coating selects metal oxide
Or ion doping type metal oxide；The cathode plate uses carbon electrode, and the carbon electrode uses graphite, carbon-polytetrafluoroethyl-ne
Alkene gas-diffusion electrode, carbon felt, activated carbon fibre or carbon nanotube.
7. a kind of cooperateed in processing coking wastewater reverse osmosis concentrated water using electro-catalysis-electricity Fenton according to claim 5 is had
The technique of machine pollutant, it is characterised in that: the constant voltage dc source output electric current is 2000-6000A, the electrochemical reaction
The logarithm of cathode-anode plate is 10-50 pairs in device, and the spacing of the anode plate and the cathode plate is 2-10cm.
8. a kind of using in electro-catalysis-electricity Fenton collaboration processing coking wastewater reverse osmosis concentrated water according to claim 4 and 5
The technique of organic pollutant, it is characterised in that: the front end of the electrochemical reactor is equipped with chemicals dosing plant, near the cathode plate
If aerator.
9. a kind of cooperateed in processing coking wastewater reverse osmosis concentrated water using electro-catalysis-electricity Fenton according to claim 8 is had
The technique of machine pollutant, it is characterised in that: the medicament added in the chemicals dosing plant is FeSO4Solution, dosage 0.05-
0.5g/L；The aeration quantity of the aerator is 50-150L/min.
10. a kind of cooperateed in processing coking wastewater reverse osmosis concentrated water using electro-catalysis-electricity Fenton according to claim 1 is had
The technique of machine pollutant, it is characterised in that: in step (5), the flocculation sedimentation unit is flocculation sedimentation tank, and the flocculation is heavy
The water inlet in shallow lake pond is equipped with chemicals dosing plant, and the flocculant added is polyacrylamide.
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