CN207062049U - A kind of ferrikinetics electrochemistry Fenton water treatment facilities - Google Patents
A kind of ferrikinetics electrochemistry Fenton water treatment facilities Download PDFInfo
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- CN207062049U CN207062049U CN201720746360.5U CN201720746360U CN207062049U CN 207062049 U CN207062049 U CN 207062049U CN 201720746360 U CN201720746360 U CN 201720746360U CN 207062049 U CN207062049 U CN 207062049U
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Abstract
The utility model belongs to water treatment field, is related to a kind of ferrikinetics electrochemistry Fenton water treatment facilities.Including Primary diaphragm electrolytic cell, secondary diaphragm electrolytic cell, Fenton oxidation pond, mixing pit and sedimentation basin；The water inlet of the anode chamber of the Primary diaphragm electrolytic cell connects water pump to input organic wastewater, the anode chamber of the delivery port connection secondary diaphragm electrolytic cell of Primary diaphragm electrolyzer anode chamber, the delivery port connection mixing pit of secondary diaphragm electrolyzer anode chamber, the mixing pit is also connected by the bottom of sludge pump and sedimentation basin, the delivery port of the mixing pit is connected by water pump with the cathode chamber of secondary diaphragm electrolytic cell, the cathode chamber delivery port connection Fenton oxidation pond of secondary diaphragm electrolytic cell, there is hydrogen peroxide dog-house on the Fenton oxidation pond, the delivery port connection sedimentation basin in Fenton oxidation pond, the top of the sedimentation basin is connected by water pump with the cathode chamber of Primary diaphragm electrolytic cell.Only need to add molysite in Fenton oxidation pond when system starts.
Description
Technical field
The utility model belongs to water treatment field, is related to a kind of ferrikinetics electrochemistry Fenton method for treating water and device.
Background technology
Electrochemical water treatment technology is a kind of new water technology, is to remove waste water using electric energy the characteristics of the technology
In organic pollution.Electro-chemical water processing is carried out in a cell, in anode region organic pollution by direct or indirect oxidation,
Degraded is up to mineralising, while in cathodic region, organic pollution can be reduced modification, but can not be degraded.Due to having in waste water
Organic pollutants concentration is far below the concentration of waste water reclaimed water, so the current efficiency that anode region is used for oxidation of organic compounds is relatively low, typically
Less than 30%, the current efficiency of residue about 70% is used to the electrode reactions such as analysis oxygen, analysis chlorine occur；Meanwhile cathodic region is used to reduce
The current efficiency of organic matter is also than relatively low, and generally below 30%, the current efficiency of residue about 70% is used to evolving hydrogen reaction occur.Cause
This, substantial amounts of electric current energy consumption is wasted.
Fenton's reaction is a kind of reaction based on Fenton reagent (hydrogen peroxide and ferrous ion), is produced in the reaction with strong
The hydroxyl radical free radical (OH) of oxidisability, can be by the organic pollution oxidation in waste water, degraded until mineralising is inorganic matter.By
In hydrogen peroxide and ferrous ion in mol ratio 1:1 or so, and the dosage of hydrogen peroxide is directly proportional to the organic pollution in waste water, institute
With in Practical Project in use, more hydrogen peroxide and ferrous salt can be used, and Fenton's reaction terminate it is latter as pH can be adjusted to
Neutrality, now Fe3+Can be with Fe (OH)3, the solid form such as FeOOH precipitation, produce a large amount of iron cements, not only add the processing of waste water
Cost, also produce solid waste.
Prior art, Chinese patent 201521128822.4 go out Fe using NF membrane or Ultra filtration membrane3+, and circulation makes
With the cost of investment of film is big and easily blocks.
Chinese patent 201610033998.4 realizes the recycling of ferro element by carbon dust and the reduction of the thermocatalytic of iron cement,
Reduction process uses high temperature (180~200 DEG C) high-pressure sealed reactor, high energy consumption and to equipment requirement height.
Chinese patent 201610335240.6 passes through cathodic reduction Fe3+For Fe2+Although solve turning for Fe3+ to Fe2+
Change, but dissolve iron cement to need outer acid adding, generation iron cement needs exogenously added alkali again.Further, since O2Saturation solubility in waste water
Relatively low (being 45mg/L in 20 DEG C of pure water, about 10mg/L in actual waste water), using O2Cathodic reduction prepares H2O2It is anti-to accumulate Fenton
Answer required H2O2Concentration needs that the residence time of waste water in a cell is significantly increased, and causes power consumption to be substantially increased.
Utility model content
Problem to be solved in the utility model is to provide a kind of ferrikinetics electrochemistry Fenton water treatment facilities.The present apparatus is filled
Divide and utilize anode reaction and cathode reaction, without acid adding, alkali, and ferro element can be recycled.
In order to solve the above technical problems, the utility model adopts the technical scheme that：
A kind of ferrikinetics electrochemistry Fenton water treatment facilities, including Primary diaphragm electrolytic cell, secondary diaphragm electrolytic cell, Fenton
Oxidation pond, mixing pit and sedimentation basin；The water inlet of the anode chamber of the Primary diaphragm electrolytic cell connects water pump to input organic waste
Water, the anode chamber of the delivery port connection secondary diaphragm electrolytic cell of Primary diaphragm electrolyzer anode chamber, secondary diaphragm anode electrolytic cell
The delivery port connection mixing pit of room, the mixing pit are also connected by the bottom of sludge pump and sedimentation basin, and the mixing pit goes out
The mouth of a river is connected by water pump with the cathode chamber of secondary diaphragm electrolytic cell, the cathode chamber delivery port connection Fenton of secondary diaphragm electrolytic cell
Oxidation pond, there are hydrogen peroxide dog-house, the delivery port connection sedimentation basin in Fenton oxidation pond, the precipitation on the Fenton oxidation pond
The top in pond is connected by water pump with the cathode chamber of Primary diaphragm electrolytic cell.
The Primary diaphragm electrolytic cell and secondary diaphragm electrolytic cell, anode chamber and negative electrode are separated into by barrier film by electrolytic cell
Room, the anode in anode chamber is insoluble anode, is connected with the positive pole of dc source, the negative electrode in cathode chamber is insoluble the moon
Pole, it is connected with the negative pole of dc source.The barrier film is appointing in anion-exchange membrane, cation-exchange membrane or porous insulating film
What is a kind of.
When handling waste water using device of the present utility model, organic wastewater is set to flow through Primary diaphragm electrolytic cell and two level successively
The anode region of diaphragm cell, the pH of waste water is reduced to acidity, and mixed into muddy water mixing pit with iron cement, iron cement is molten
Solution, the waste water containing Fe3+ enters the cathodic region of secondary diaphragm electrolytic cell, Fe3+ is reduced into Fe2+, and improves the pH of waste water,
Enter back into Fenton oxidation pond and form Fenton's reaction with additional hydrogen peroxide, finally enter sedimentation basin and carry out separation of solid and liquid, supernatant
Into the cathodic region of Primary diaphragm electrolytic cell, pH rises to neutrality and discharges afterwards or enter other follow-up processing steps, and iron cement is returned
Return mixing pit to mix with acid waste water, use ferrikinetics.The electrochemical appliance of the present invention has regulation wastewater pH and reduction Fe3
+ the function of being Fe2+, is combined with additional cheaper commodity hydrogen peroxide, realizes the electrochemistry Fenton treatment technology of ferrikinetics jointly.
The present apparatus makes full use of the anode of electrolytic cell both to reduce chemistry to the oxidation reaction and oxygen evolution reaction of organic pollution
Oxygen demand (CODCr), the pH of waste water is reduced again to dissolve iron cement caused by Fenton's reaction；The negative electrode of electrolytic cell is made full use of simultaneously
Evolving hydrogen reaction and to Fe3+Reduction, can be by Fe3+It is reduced to Fe2+Follow-up Fenton's reaction is participated in, and can improves useless
The pH of water.
The principle that oxygen evolution reaction reduces wastewater pH is to produce H+：
H2O–2e-=H++1/2O2↑……………………………(1)
The principle that evolving hydrogen reaction improves wastewater pH is to produce OH-：
H2O+e-=OH-+1/2H2↑……………………………(2)
The characteristics of the utility model is that pH reduction is the anode by Primary diaphragm electrolytic cell and secondary diaphragm electrolytic cell
Oxygen evolution reaction is completed, and pH rise is completed by the evolving hydrogen reaction of Primary diaphragm electrolytic cell and secondary diaphragm electric tank cathode；
Iron cement dissolves Fe by acid waste water3+, Fe3+It is Fe by the cathodic reduction of secondary diaphragm electrolytic cell2+, Fe2+Sweet smell is formed with hydrogen peroxide
Reaction of pausing forms iron content flco, and iron content flco forms iron cement in sedimentation basin separation of solid and liquid, and iron cement is dissolved by acid waste water again, is formed
The circulation of ferro element.Only need to add by regulation and can adjust pH of the waste water in each process section to the electricity of waste water, it is not necessary to
The processing step of acid adding plus alkali in common process, therefore do not need acid adding plus the equipment of alkali in common process.Only needs are being
Unite and add molysite when starting in Fenton oxidation pond, after system run all right, ferro element circulates in system, without adding iron again
Salt.
Brief description of the drawings
Fig. 1：A kind of electrochemistry ferrikinetics Fenton water treatment facilities figure.
1- Primary diaphragm electrolytic cells, 2- water pumps, 3- Primary diaphragms electrolyzer anode chamber, 4- Primary diaphragm diaphragm for electrolytic cell,
5- hydrogen peroxide dog-houses, 6- Primary diaphragm electric tank cathodes room, 7- secondary diaphragm electrolytic cells, 8- secondary diaphragm electric tank cathodes
Room, 9- secondary diaphragms electrolyzer anode chamber, 10- secondary diaphragm diaphragm for electrolytic cell, 11- Fenton oxidations pond, 12- sedimentation basins, 13- iron
Mud, 14- sludge pumps, 15- mixing pits.
Embodiment
A kind of ferrikinetics electrochemistry Fenton water treatment facilities of the present utility model, as shown in Figure 1.
A kind of ferrikinetics electrochemistry Fenton water treatment facilities, including Primary diaphragm electrolytic cell, secondary diaphragm electrolytic cell, Fenton
Oxidation pond, mixing pit and sedimentation basin；The water inlet of the anode chamber of the Primary diaphragm electrolytic cell connects water pump to input organic waste
Water, the anode chamber of the delivery port connection secondary diaphragm electrolytic cell of Primary diaphragm electrolyzer anode chamber, secondary diaphragm anode electrolytic cell
The delivery port connection mixing pit of room, the mixing pit are also connected by the bottom of sludge pump and sedimentation basin, and the mixing pit goes out
The mouth of a river is connected by water pump with the cathode chamber of secondary diaphragm electrolytic cell, the cathode chamber delivery port connection Fenton of secondary diaphragm electrolytic cell
Oxidation pond, there are hydrogen peroxide dog-house, the delivery port connection sedimentation basin in Fenton oxidation pond, the precipitation on the Fenton oxidation pond
The top in pond is connected by water pump with the cathode chamber of Primary diaphragm electrolytic cell.
Processing step using said apparatus processing organic wastewater is as follows：
Waste water is delivered to the Primary diaphragm electrolyzer anode chamber 3 of Primary diaphragm electrolytic cell 1 by water pump 2, and switch on power electricity
Solution, the water outlet COD of Primary diaphragm electrolyzer anode chamber 3CrReduce, and make pH<3.
The water outlet of Primary diaphragm electrolyzer anode chamber 3 enters secondary diaphragm electrolyzer anode chamber 9, connects secondary diaphragm electrolytic cell
Power supply, electrolysis, the water outlet COD of secondary diaphragm electrolyzer anode chamber 9CrFurther reduce, and make pH<2.
The water outlet of secondary diaphragm electrolyzer anode chamber 9 enters mixing pit 15；Meanwhile the iron cement in sedimentation basin 12 passes through sludge pump
14 are delivered to mixing pit 15, the two mixing, iron cement are dissolved.
Dissolved with Fe3+Mixing pit waste water the cathode chamber 8 of secondary diaphragm electrolytic cell is delivered to by water pump 20, electrolysis, Fe3 +It is reduced to Fe2+, while make pH>3.
The water outlet of cathode chamber 8 of secondary diaphragm electrolytic cell enters Fenton oxidation pond 11；Hydrogen peroxide with adding Fenton oxidation pond
Fenton's reaction occurs for mixing, and pH is reduced to 3~4, Fe3+Precipitated in the form of flco, CODCrFurther it is greatly reduced.
The water outlet in Fenton oxidation pond 11 enters sedimentation basin 12, and iron content flco is deposited to bottom of pond and forms iron cement, sedimentation basin iron cement
13 are delivered to mixing pit 15 by sludge pump 14, are mixed with secondary diaphragm electrolyzer anode chamber 9 water outlet, form ferrikinetics.
The supernatant of sedimentation basin 12 is delivered to Primary diaphragm electric tank cathode room 6 by charging pump 2, electrolysis, makes pH=6~9,
The Chinese effluent of Primary diaphragm electric tank cathode room 6 enters other follow-up processing steps.
Claims (3)
1. a kind of ferrikinetics electrochemistry Fenton water treatment facilities, it is characterised in that including Primary diaphragm electrolytic cell, secondary diaphragm electricity
Solve groove, Fenton oxidation pond, mixing pit and sedimentation basin；The water inlet connection water pump of the anode chamber of the Primary diaphragm electrolytic cell is defeated
Enter organic wastewater, the anode chamber of the delivery port connection secondary diaphragm electrolytic cell of Primary diaphragm electrolyzer anode chamber, secondary diaphragm electricity
The delivery port connection mixing pit of Xie Cao anode chambers, the mixing pit is also connected by the bottom of sludge pump and sedimentation basin, described mixed
The delivery port for closing pond is connected by water pump with the cathode chamber of secondary diaphragm electrolytic cell, the cathode chamber delivery port of secondary diaphragm electrolytic cell
Fenton oxidation pond is connected, also has hydrogen peroxide dog-house on the Fenton oxidation pond, the delivery port in Fenton oxidation pond connects sedimentation basin,
The top of the sedimentation basin is connected by water pump with the cathode chamber of Primary diaphragm electrolytic cell.
2. water treatment facilities according to claim 1, it is characterised in that the Primary diaphragm electrolytic cell and secondary diaphragm electricity
Groove is solved, electrolytic cell is separated into by anode chamber and cathode chamber by barrier film, the anode in anode chamber is insoluble anode, with direct current
The positive pole in source is connected, and the negative electrode in cathode chamber is insoluble negative electrode, is connected with the negative pole of dc source.
3. water treatment facilities according to claim 1 or 2, it is characterised in that the barrier film be anion-exchange membrane, sun from
Any one of proton exchange or porous insulating film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201720746360.5U CN207062049U (en) | 2017-06-26 | 2017-06-26 | A kind of ferrikinetics electrochemistry Fenton water treatment facilities |
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| CN201720746360.5U CN207062049U (en) | 2017-06-26 | 2017-06-26 | A kind of ferrikinetics electrochemistry Fenton water treatment facilities |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107253782A (en) * | 2017-06-26 | 2017-10-17 | 武汉威蒙环保科技有限公司 | A kind of ferrikinetics electrochemistry Fenton method for treating water and device |
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2017
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107253782A (en) * | 2017-06-26 | 2017-10-17 | 武汉威蒙环保科技有限公司 | A kind of ferrikinetics electrochemistry Fenton method for treating water and device |
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