CN102557198B - Multi-dimensional electrocatalysis reactor - Google Patents
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- CN102557198B CN102557198B CN 201210010637 CN201210010637A CN102557198B CN 102557198 B CN102557198 B CN 102557198B CN 201210010637 CN201210010637 CN 201210010637 CN 201210010637 A CN201210010637 A CN 201210010637A CN 102557198 B CN102557198 B CN 102557198B
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Abstract
The invention discloses a multi-dimensional electrocatalysis reactor, which comprises a reactor body, wherein a separation plate is arranged in the reactor body and is used for separating an inner cavity of the reactor body into an electrode groove and a precipitation groove, the tops of the electrode groove and the precipitation groove are mutually communicated, a water distribution pipe with a water inlet hole is arranged at the lower part of the electrode groove, active electrodes are arranged at the upper part of the electrode groove, active material regulating particles are filled among the active electrodes, and a water outlet groove is arranged on the inner wall of the upper part of the precipitation groove. The multi-dimensional electrocatalysis reactor has the advantages that the application range is wide, the reaction speed is high, the current efficiency is high, the investment cost is low, the service life is long, in addition, the operation and the maintenance are convenient, the multi-dimensional electrocatalysis reactor is particularly applicable to the treatment of high-salinity high-chromaticity high-acidity high-toxicity and difficult-biochemical-degradation dye and organic waste water for printing and dyeing, pesticide, pharmacy, electroplating, leather making, mechanical coating, heavy metal, garbage percolate and the like.
Description
Technical field
The present invention relates to a kind of environmental protection equipment, specifically a kind of multi-dimensional electro-catalytic reactor.
Background technology
Along with the fast development of Chinese national economy and the rapid raising of people's lives, environmental consciousness also strengthens thereupon.National Environmental statistics annual reports in 2008 according in October, 2009 announcement of national environmental protection section, national wastewater emission amount was 571.7 hundred million tons in 2008, wherein discharged volume of industrial waste water is 241.7 hundred million tons, 33,000,000,000 tons of city domestic sewage quantity dischargeds, 1320.7 ten thousand tons of chemical oxygen demand (COD) in waste water (COD) quantity dischargeds, in waste water, the ammonia nitrogen quantity discharged is 127.0 ten thousand tons, recycling rate of water used by the industries 83.8%.Industrial wastewater discharge compliance rate 93.6%, city domestic sewage processing rate only 57.4% causes China's 85% rivers lakes surface water all to be subject to the different pollution of degree, process water and people and animals' tap water generation shortage phenomenon, restrict the development of national economy, affected the people's life.People-oriented in the Chinese government, makes every effort to science, harmony, Sustainable development national economy, in recent years strengthened the dynamics of trade effluent and sanitary sewage disposal, strengthened the input of environment protection and wastewater treatment.
The electrochemical techniques of commonly using in high salinity, high acidity, high chroma, the poisonous and hazardous bio-refractory wastewater treatment of high density mainly contain the several types such as electrolytic process, electro-flotation, electricity flocculation.Electrolytic process is to adopt the low-voltage and high-current power supply, and power consumption is large, efficient is low, working cost is high, does not meet the principle of the low energy that China advocates now; Electro-flotation is to adopt lossless Graphite Electrodes, by under the effect of DC electric field, generates H
2, O
2Air supporting Deng gas is used for processing waste water, but have that current efficiency is low, poor processing effect, shortcoming that working cost is high; Electricity flocculation is to adopt the lossy ferroelectric utmost point, aluminium electrode, under the effect of DC electric field, produce electric throwing out and process waste water, but also have iron, aluminum metallic material consumption is large, current efficiency is low, working cost is high shortcoming.Several electrochemical techniques such as electrolytic process, electro-flotation, electricity flocculation, can only make packaged unit for above-mentioned reasons, can not make large-scale industrial equipments, limited and applied.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of multi-dimensional electro-catalytic reactor, solve several electrochemical techniques such as existing electrolytic process, electro-flotation, electricity flocculation and have the problems such as metallic substance consumption is large, current efficiency is low, poor processing effect, working cost height, can increase substantially current efficiency, reduce metallic substance consumption, reduce running cost, improve treatment effect.
Technical scheme of the present invention is:
The multi-dimensional electro-catalytic reactor, comprise reactor body, be provided with dividing plate in described reactor body the inner chamber of reactor body is divided into slot electrode and settling bath, the bottom of dividing plate is fixedly connected with the base plate of reactor body, leaves the space between the top end plate of its top and reactor body; Described slot electrode bottom is provided with the water distributor with the prosopyle, and water distributor reaches the outer water inlet pipe of reactor body with part and is connected, and slot electrode top is provided with active electrode, is filled with the active filler particle between active electrode; Be provided with effluent trough on described settling bath upper inside wall, effluent trough reaches the outer rising pipe of reactor body with part and is connected, and the bottom of settling bath is provided with part and reaches the outer blow-off pipe of reactor body.
Described active electrode is by external frequency modulation on pulse DC power supply.
The profile of described reactor body is rectangular parallelepiped, cubes or right cylinder; Reactor body is to be made by plastics, glass reinforced plastic, epoxy resin and stainless steel or carbon steel inside lining anti-corrosive rubber; Neglecting greatly of reactor disposed of sewage the water yield and decides.
Described active electrode is by iron-based, aluminium base, titanium base and graphite-based and is coated on iron-based, aluminium base, titanium base and the lip-deep TiO of graphite-based
2, SnO
2, Sb
2O
3, MnO
2, PbO
2And YiO
2Catalystic material consists of; The area of active electrode is 10-200cm*5-200cm.
Described active filler particle is by ferrous material, and inertia charcoal particle and catalystic material form: ferrous material is one or more the mixing in iron plane flower, carbon steel wood shavings and cast iron filing; Inertia charcoal particle is one or more the mixing in graphite, gac and coke; Catalyzer is one or more the mixing in rare earth element, binary metal and transition metal oxide, and catalyst particle size is 1-5mm.
The volume of described settling bath is 1-5 times of slot electrode volume.
The adjustable frequency of described frequency modulation on pulse direct supply is the 0-10000 hertz, and adjustable voltage is the 0-300 volt, and adjustable current is the 0-500 peace.
Described water inlet pipe can be connected with flange and external pipe, and water inlet pipe also available threeway is connected with the inlet pipe of air or purity oxygen.
Described rising pipe can be connected with flange and external pipe, water outlet can be drained into coagulative precipitation device and carry out coagulating sedimentation, reaches further solid-liquid separation purpose.
Described shore pipe can be connected with flange and external pipe, and mud is drained into the sludge treatment place.
Described reactor body is fixed on steel structure base, and can adjust according to the height that treatment process requires the design height of base.
Compared with the prior art, beneficial effect of the present invention is:
The present invention adopts the multidimensional catalysis electrode to substitute several electrochemical techniques such as original electrolytic process, electro-flotation, electricity flocculation, have take up room little, energy consumption is low, efficient is high, the characteristics such as fault is few, and is stable, and processing costs is low, to processing high salinity, high acidity, high chroma, the poisonous and hazardous bio-refractory waste water of high density, be the outstanding novel multi-vitamin electric catalysis reactor equipment of a kind of performance.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the sectional view of A-A in Fig. 1.
Embodiment
See Fig. 1, Fig. 2, the multi-dimensional electro-catalytic reactor, the reactor body 1 that comprises the rectangular parallelepiped profile, neglecting greatly of reactor body 1 disposed of sewage the water yield and decides, be provided with the settling bath 4 that dividing plate 2 is divided into slot electrode 3 with the inner chamber of reactor body 1 and plays the solid-liquid separation effect in reactor body 1, the volume of settling bath 4 is 1-5 times of slot electrode 3 volumes, and the bottom of dividing plate 2 is fixedly connected with the base plate of reactor body 1, leaves the space between the top end plate of its top and reactor body 1; Slot electrode 3 bottoms are provided with the water distributor 5 with the prosopyle, and water distributor 5 reaches the outer water inlet pipe 6 of reactor body 1 with part and is connected, and slot electrode 3 tops are provided with active electrode 7, are filled with active filler particle 8 between active electrode 7; Be provided with effluent trough 9 on settling bath 8 upper inside wall, effluent trough 9 reaches the outer rising pipe 10 of reactor body 1 with part and is connected, and the bottom of settling bath 4 is provided with part and reaches the outer blow-off pipe 11 of reactor body 1; Active electrode 7 is by external frequency modulation on pulse DC power supply, and the adjustable frequency of frequency modulation on pulse direct supply is the 0-10000 hertz, and adjustable voltage is the 0-300 volt, and adjustable current is the 0-500 peace.
Institute's active electrode 7 includes the negative electrode, the anode that adopts iron-based or titanium base that adopt aluminium base or graphite-based, is coated on the MnO on cathode surface
2Or/and YiO
2Catalystic material, be coated on the TiO on anode surface
2, SnO
2, Sb
2O
3, PbO
2In one or more catalystic materials; The area of active electrode 7 is (10 ~ 200) cm* (5 ~ 200) cm; Active filler particle 8 is by ferrous material, and inertia charcoal particle and catalystic material form: ferrous material is one or more the mixing in iron plane flower, carbon steel wood shavings and cast iron filing; Inertia charcoal particle is one or more the mixing in graphite, gac and coke; Catalyzer is one or more the mixing in rare earth element, binary metal and transition metal oxide, and catalyst particle size is 1-5mm.
Use principle of the present invention:
Multi-dimensional electro-catalytic reactor principle of work
During the work of multi-dimensional electro-catalytic reactor, the waste water that pumps into enters water distributor 5 water distribution uniformities by water inlet pipe 6, waste water contacts mixing with the active electrode 7 that is connected with the frequency modulation on pulse direct supply with active filler particle 8 by slot electrode 3 bottoms risings, and a series of electrocatalysis chemical actions occur:
1, the electrocatalysis on active electrode:
A, organic direct electrochemistry transform:
The electrocatalysis electrochemical action of organism on active electrode is mainly electrochemical conversion and electrode surface oxidation.Electro-chemical conversion is that the organism toxic substance is converted into non-toxic substance, and the macromole of organism material is converted into small molecules, is conducive to further biological treatment; The anode surface oxidation is to be the organism deep oxidation CO
2, namely at first anode surface adsorbs free radical and metal oxide on anode is oxidized to high oxide:
MO
x(.OH)+H
2O→MO
x (.OH)+ H
++e
MO
x (.OH) →MO
x +1+ H
++e
And then organism in oxidized waste water:
R+MO
x (.OH) →CO
2+MO
x+ H
++e
R+MO
x +1→MO
x+RO
B, organic Indirect Electro catalyzed conversion:
The Indirect Electro catalyzed conversion is exactly .OH, the .O that utilizes electrochemical action to produce on anode
2.HO
2Come oxidation and destroy organic pollutant Deng free radical, until be oxidized to CO
2And H
2O。
At the electrocatalysis in active filler: the active filler particle that is filled with katalysis between active electrode, the active filler particle is generally by ferrous material, and inertia charcoal particle and catalyzer etc. are the material composition more than three kinds: ferrous material is iron plane flower or carbon steel wood shavings or cast iron filing composition; Inertia charcoal particle is graphite or gac or coke composition; Catalyzer is that rare earth element, binary metal or transition metal oxide form, and particle diameter is generally 1-5mm.Ferrous material in the active filler particle and activated carbon granule because the low iron of redox potential and the high charcoal of redox potential produce potential difference in waste water, form countless galvanic cells, produce electrode reaction:
Anode (Fe): Fe---2e → Fe
2+
E
0（Fe
2+/Fe）=-0.44v
Negative electrode (C):
Under acidic conditions: 2H
++ 2e → H
2↑
E
0（H
+/ H
2）=0.00v
When oxygen is arranged: O
2+ 4H
++ 4e → 2H
2O, E
0(O
2)=1.23V
O
2+2H
2O+4e→4OH
-， E
0（O
2/OH
-）=0.40V
By the little electrolysis and degradation Pollutants in Wastewater of galvanic cell, comprise electrophoretic action, the reductive action of iron and Fe like this
2+, Fe
3+The complexing throwing out, the redoxomorphism of hydrogen can be decoloured to waste water, can destroy and decompose the larger molecular organics structure, can be to metal, non-metal contaminants redox, precipitation, thereby reach the purpose of organic pollutant in degrading waste water; Simultaneously, the active filler particle is under the high-gradient electric field effect, and there is respectively dissimilar polarity generation redox reaction in small-particle two ends, and each small-particle is a micro cell; Each short grained orientation is different, has formed multidimension electrode together with the reactive electro electrode; Because negative electrode and the anode distance of each micro cell are very near, large with the waste water contact area, the easy electricity of mass transfer is led soon; And have the catalyzer that is formed by rare earth element, binary metal or transition metal oxide in the active filler particle, can produce the electrocatalysis same with active electrode, so current efficiency significantly improves, the treatment effect increasing, the processing costs reduction is a lot.
The present invention has applied widely, speed of response is fast, current efficiency is high, treatment effect is good, and investment cost is few, and running cost is low, long service life, convenient operating maintenance, long-time running is effectively stable, is specially adapted to the treatment of Organic Wastewater such as dyestuff, printing and dyeing, agricultural chemicals, pharmacy, plating, process hides, mechanical application, heavy metal and garbage leachate of high salinity, high chroma, high density, high acidity, high toxicity, bio-refractory.
Claims (7)
1. multi-dimensional electro-catalytic reactor, comprise reactor body, it is characterized in that: be provided with dividing plate in described reactor body the inner chamber of reactor body is divided into slot electrode and settling bath, the bottom of dividing plate is fixedly connected with the base plate of reactor body, leaves the space between the top end plate of its top and reactor body; Described slot electrode bottom is provided with the water distributor with the prosopyle, and water distributor reaches the outer water inlet pipe of reactor body with part and is connected, and slot electrode top is provided with active electrode, is filled with the active filler particle between active electrode; Be provided with effluent trough on described settling bath upper inside wall, effluent trough reaches the outer rising pipe of reactor body with part and is connected, and the bottom of settling bath is provided with part and reaches the outer blow-off pipe of reactor body.
2. multi-dimensional electro-catalytic reactor according to claim 1 is characterized in that: described active electrode is by external frequency modulation on pulse DC power supply.
3. multi-dimensional electro-catalytic reactor according to claim 1, it is characterized in that: the profile of described reactor body is rectangular parallelepiped, cubes or right cylinder.
4. multi-dimensional electro-catalytic reactor according to claim 1 is characterized in that: described active electrode is by iron-based, aluminium base, titanium base and graphite-based and is coated on iron-based, aluminium base, titanium base and the lip-deep TiO of graphite-based
2, SnO
2, Sb
2O
3, MnO
2, PbO
2And YiO
2Catalystic material consists of; The area of active electrode is 10-200cm*5-200cm.
5. multi-dimensional electro-catalytic reactor according to claim 1, it is characterized in that: described active filler particle is by ferrous material, and inertia charcoal particle and catalystic material form: ferrous material is one or more the mixing in iron plane flower, carbon steel wood shavings and cast iron filing; Inertia charcoal particle is one or more the mixing in graphite, gac and coke; Catalyzer is one or more the mixing in rare earth element, binary metal and transition metal oxide, and catalyst particle size is 1-5mm.
6. multi-dimensional electro-catalytic reactor according to claim 1 is characterized in that: the volume of described settling bath be the slot electrode volume 1-5 doubly.
7. multi-dimensional electro-catalytic reactor according to claim 2, it is characterized in that: the adjustable frequency of described frequency modulation on pulse direct supply is the 0-10000 hertz, and adjustable voltage is the 0-300 volt, and adjustable current is the 0-500 peace.
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| CN104211231A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Method for treating waste liquid of oil field measures |
| CN103739039B (en) * | 2014-01-16 | 2016-05-11 | 化工部长沙设计研究院 | A kind of multi-dimensional electro-catalytic equipment |
| CN105060419B (en) * | 2015-08-04 | 2017-09-29 | 南京中创水务集团股份有限公司 | Multicell multidimensional electro-coagulation equipment for high ammonia-nitrogen wastewater |
| CN110790347B (en) * | 2019-10-16 | 2024-02-13 | 广西桂润环保科技有限公司 | Electrophoresis enhancement electrocatalytic oxidation advanced treatment device |
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| Title |
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| JP昭61-54279A 1986.03.18 |
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| CN102557198A (en) | 2012-07-11 |
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