CN2858628Y

CN2858628Y - Pole-reversing operation electrochemical reactor

Info

Publication number: CN2858628Y
Application number: CN 200620032114
Authority: CN
Inventors: 冯庆中
Original assignee: Feng pengda
Current assignee: Feng pengda
Priority date: 2006-05-30
Filing date: 2006-05-30
Publication date: 2007-01-17
Anticipated expiration: 2016-05-30

Abstract

The utility model discloses an electrochemical reactor of reverse technology running. The rector includes at least two fence anode sets and two fence cathode sets, one of fence anode sets and one of fence cathode sets are mutually inserted and arranged on a plane or an arc surface to buildup compound electrode set A, another fence anode set and another fence cathode set are also arranged to be corresponding a plane or an arc surface to buildup compound electrode set B, the fence anode set and the fence cathode set in a same compound electrode set are alternatively electrified without working at the same time. Two fence anode sets of adjacent compound electrode sets are alternatively electrified without working at the same time. The apparatus has an effect of wiping off water medium suspended solids, electrochemical oxidative wastewater COD, hard (Ca[2+], Mg[2+]) of strain-softening water medium, most of ions of water and killing bacteria and algae in water medium with electroanalysis.

Description

A kind of electrochemical reactor of the operation of falling the utmost point

Technical field:

The utility model relates to a kind of with the electrochemical method treatment unit of purifying waste water, especially a kind of electrochemical reactor of the operation of falling the utmost point.

Background technology:

Existing similar technology is to comprise an anode, a negative electrode at least, after connecting direct current operation certain hour, in order to eliminate the incrustation scale (main component is compositions such as calcium hydroxide, magnesium hydroxide, lime carbonate) that negative electrode produces, generally be to adopt outaged equipment, clean the negative electrode incrustation scale with acid solution, this method need frequently be carried out, and spent pickle liquor is seriously polluted, the device start-stop stops, and does not almost have industrial application value; Employing regularly changes anode in addition in addition, negative electrode polar method melts incrustation scale, but owing to change polarity of electrode continually, expensive electrode is frequent is in oxidation, reduced state, electrode can be corroded very soon, the longest work-ing life is some months only, and is short then will be corroded in several days and finish, and therefore known similar technology all can't solve the negative electrode scale problems reliably at present, particularly when high current density moved, known similar technology did not almost have industrial application value.

Up to the present, do not find that also a kind of device is at least by two palisade anode groups, two palisade cathode sets are formed, one of them palisade anode group and a palisade cathode sets are arranged in a plane (perhaps arc surface), another palisade anode group also is arranged in corresponding plane (perhaps arc surface) with another palisade cathode sets, the anode group of (perhaps arc surface) and cathode sets alternate energisation on same plane, do not work simultaneously, at the alternately logical forward dc of two groups of adjacent anode groups, do not work simultaneously, at the alternately logical negative sense direct current of two groups of adjacent cathode sets, do not work simultaneously yet, when logical direct current respectively at anode, negative electrode produces oxidation, reduction reaction, simultaneously at sun, produce ozone on the negative electrode respectively, hydroxyl, chlorine, oxygen, hydrogen, this device both can be independent, also can reach the air supporting choosing simultaneously and remove the water medium suspended substance, the catalytic oxidation degrading waste water COD, hardness (Ca in the softening water medium ²⁺, Mg ²⁺), remove the relevant report that machine or the equipment of bacterium algae in the water medium are killed in ion, electrolysis in the water.

The utility model content:

The purpose of this utility model provides a kind of apparatus for electrochemical treatment that can eliminate the negative electrode fouling automatically, and the hardness (Ca in water medium suspended substance, catalytic oxidation degrading waste water COD, the softening water medium is removed in the ion, the air supporting choosing that utilize this device can remove in the water ²⁺, Mg ²⁺), electrolysis kills the electrochemical reactor of bacterium algae in the water medium.

The technical solution of the utility model is: this reactor is made up of two palisade anode groups and two palisade cathode sets at least, and one of them palisade anode group and a palisade cathode sets are arranged on a plane or the arc surface, forms combined electrode group A; Another palisade anode group also is arranged in corresponding plane or arc surface with another palisade cathode sets, forms combined electrode group B; Palisade anode group in same combined electrode group and palisade cathode sets alternately are communicated with the direct supply positive and negative electrode, do not work simultaneously; Two palisade anode groups also are alternately to be communicated with the positive pole of direct supply in adjacent combined electrode group, do not work simultaneously; Two palisade cathode sets also are alternately to be communicated with the negative pole of direct supply in adjacent combined electrode group, do not work simultaneously.Palisade anode utmost point group is communicated with (perhaps disconnecting), work simultaneously (perhaps not working) respectively simultaneously in palisade cathode sets in the combined electrode group and the adjacent combined electrode group with the positive and negative electrode of direct supply.

Between adjacent combined electrode group A, B, can place one or many ion-exchange membranees and form the barrier film that permission aqueous solution intermediate ions such as novel electrodialysis unit, individual layer filter cloth pass through and isolate, also can not place barrier film; Also can be between adjacent combined electrode group filled conductive material such as activated carbon granule, activated carbon fiber, alumina balls etc., form the three-diemsnional electrode system; Anode in same combined electrode group and negative electrode alternate energisation, do not work simultaneously, two alternately logical forward dc electricity of anode group are not worked simultaneously in adjacent combined electrode group A, B, two alternately logical negative sense direct currents of cathode sets are not worked simultaneously yet in adjacent combined electrode group A, B; Anode, negative electrode in correspondence produces oxidation, reduction reaction respectively when leading to direct current, water body near the anode surface zone is that (cathode sets that at this moment is positioned at conplane off working state is under the acidic bodies of water effect for acidity, the incrustation scale on surface can dissolve fast), be alkalescence (scale formation can appear in this part negative electrode of working) near the cathode surface water body, after flowing out electrochemical reactor, soda acid water is neutralized into neutral water automatically; On the positive and negative electrode, produce simultaneously ozone, hydroxyl, chlorine (becoming hypochlorous acid and clorox after water-soluble), oxygen, hydrogen respectively, above electrode product acts on the processed water body of mobile simultaneously, makes it reach air supporting respectively or simultaneously and selects the hardness (Ca that removes in water medium suspended substance, catalytic oxidation waste water COD, the softening water medium ²⁺, Mg ²⁺), remove ion, electrolytic oxidation in the water and kill bacterium algae in the water medium, this electrochemical generator treatment effect excellence, simple and compact for structure, running cost is cheap, a tractor serves several purposes.

The utility model compared with prior art has following advantage and effect:

1, in the utility model each combined electrode group by work anode and be in off working state negative electrode or work negative electrode and the anode of off working state form; And existing known technology is to have only an anode, a negative electrode, and anode and cathode is in running order all the time, and no matter whether reverse.

2, anode of the present utility model when energising work (non-except) is in straight polarity all the time, negative electrode when energising work (non-except) is in negative polarity all the time, that is to say, anode material can not be in reduced state all the time, cathode material can not be in the state of oxidation all the time, quick corrosive phenomenon so just can not occur; And the anode of existing known technology, negative electrode are only switched polarity in order to melt the incrustation scale of negative electrode, make anode material, cathode material be in oxidation, reduced state continually, and corrosion is inevitable fast.

Description of drawings:

Fig. 1 is first kind of two dimensional structure synoptic diagram of the utility model,

Fig. 2 is second kind of two dimensional structure synoptic diagram of the utility model,

Fig. 3 is the third two dimensional structure synoptic diagram of the utility model,

Fig. 4 is the utility model arc surface structural representation.

Embodiment:

First kind of structure of the utility model be as shown in Figure 1: comprise palisade anode group 1 (for example being in the energising working order this moment), form combined electrode group A at conplane palisade cathode sets 1-1 (energising is not in off working state); Multilayer ion-exchange membrane 4 (perhaps one deck filter cloth); Processed water passage 5; Palisade anode group 2 (energising is not in off working state), palisade cathode sets 2-1 (it is in running order to switch on) form combined electrode group B, multilayer ion-exchange membrane 4 (perhaps one deck filter cloth); Palisade anode group 3 (it is in running order to switch on), palisade cathode sets 3-1 (energising is not in off working state) form combined electrode group C.

When palisade anode group 1, when palisade anode group 3 connects direct supply anodal, palisade cathode sets 2-1 connects the negative pole of direct supply, palisade anode group 1 is formed the DC electrode field with palisade cathode sets 2-1, palisade anode group 3 is formed another one DC electrode field again with palisade cathode sets 2-1 group, behind palisade cathode sets 2-1 operation certain hour, the surface can produce a large amount of calcium hydroxide, magnesium hydroxide, compositions such as lime carbonate, if continuous service always, cathode sets will be covered fully by incrustation scale, thereby no longer conduct electricity, therefore, regularly stop palisade cathode sets 2-1 and palisade anode group 1,3 power supply, connect palisade anode group 2 simultaneously in dc power anode, palisade cathode sets 1-1,3-1 and dc power cathode are connected, at this moment original DC electric field direction reverses, palisade cathode sets 2-1 (no power this moment) is owing to be under the sour environment that palisade anode group 2 (energising work) produced, and the incrustation scale of its surface attachment can come off in very fast dissolving, thereby realizes removing the purpose of incrustation scale.Operation makes palisade anode group 1,3 behind the certain hour once more, and the palisade cathode sets 2-1 operation of switch on makes palisade cathode sets 1-1,3-1 and 2 power failures of palisade anode group, and the incrustation scale of palisade cathode sets 1-1,3-1 can dissolve again and come off like this.

Because being in all the time,

palisade anode group

1,2,3 is interrupted positive pole and power down mode, palisade cathode sets 1-1,2-1,3-1 are in all the time and are interrupted negative pole and power down mode, so just can perfectly avoid present electrode of the prior art frequently to switch the quick corrosion phenomenon that polarity is brought, anode group, cathode sets are moved for a long time.

When ion-exchange membrane 4 (perhaps filter cloth) was arranged in the electrode field, the effect that can realize sloughing zwitterion in the water was equivalent to conventional electrodialysis;

When not having ion-exchange membrane 4 (perhaps filter cloth) in the electrode field, as Fig. 2: second kind of structural representation of the utility model, the utility model can realize that the air supporting choosing removes the hardness (Ca in water medium suspended substance, catalytic oxidation waste water COD, the softening water medium ²⁺, Mg ²⁺), electrolytic oxidation kills the effect of bacterium algae in the water medium;

When filled conductive material between cathode-anode plate (activated carbon granule, activated carbon fiber, alumina balls etc.), form the three-diemsnional electrode system;

Fig. 3, Fig. 4 are that the profile of electrode group is arranged with Fig. 2 and had any different, and operation scheme, principle, effect are same as shown in Figure 2, just no longer narration here.

Claims

1, a kind of electrochemical reactor of the operation of falling the utmost point, comprise anode, negative electrode and direct supply, it is characterized in that: anode is made up of two palisade anode groups at least, negative electrode is made up of two palisade cathode sets at least, one of them palisade anode group and a palisade cathode sets plug together mutually and are arranged in a plane or arc surface composition combined electrode group A, another palisade anode group and another palisade cathode sets also are arranged in corresponding plane or arc surface is formed combined electrode group B, palisade anode group in same combined electrode group and palisade cathode sets alternately with direct supply just, negative pole is communicated with; Two palisade anode groups also are alternately to be communicated with the positive pole of direct supply in adjacent combined electrode group; Two palisade cathode sets also are alternately to be communicated with the negative pole of direct supply in adjacent combined electrode group; Palisade anode utmost point group is communicated with simultaneously with the positive and negative electrode of direct supply respectively or disconnects in palisade cathode sets in the combined electrode group and the adjacent combined electrode group.

2, the electrochemical reactor of the operation of falling the utmost point according to claim 1 is characterized in that: be provided with one deck ion-exchange membrane or individual layer filter cloth between adjacent two combined electrode group A, the B.

3, the electrochemical reactor of the operation of falling the utmost point according to claim 1 is characterized in that: be provided with the above ion-exchange membrane of one deck between two adjacent combined electrode groups.

4, the electrochemical reactor of the operation of falling the utmost point according to claim 1 is characterized in that: fill the conducting material of being made up of activated carbon granule or activated carbon fiber or alumina balls between two adjacent combined electrode groups.