A kind of electrode structure and electrolytic reaction groove
Technical field
The utility model belongs to electrochemistry sewage treatment equipment field, is specifically related to a kind of electrode structure and electrolytic reaction groove.
Background technology
Electrochemistry wastewater treatment process is to comprise the coefficient results of multiple physical chemistry such as electrolytic flocculation, electrolytic oxidation, electrolytic reduction and electrofloatation, mainly utilizes the interaction of electrode and electric energy to process waste water.Electrode is the core of electrochemical processing apparatus, and electrode materials and structure formation have a very important role to the performance of electrochemical processing apparatus.
Conventional electrochemical electrode structure roughly can be divided into two classes at present: a class is plate electrode, and another kind of is three dimensional particles electrode.Plate electrode is simple in structure, easy for installation and be easy to control, but the specific surface area of plate electrode is little, and the contact surface of pole plate and waste water is little, and the utilization ratio of pole plate is relatively low, and processing efficiency is relatively not high.Particularly, in the time processing organic wastewater with difficult degradation thereby, utilizing plate electrode to process needs the higher electric energy of consumption just can reach requirement.And three dimensional particles electrode is relative and plate electrode has larger specific surface area, granule electrode and waste water contact surface are large, it is high that processing efficiency and current utilization rate are wanted, but the fluidized state of granule electrode in electrolytic reaction groove is difficult to good control at present, when piling up, granule electrode easily forms short-circuit current, be unfavorable for electrochemical reaction, also easily cause the damage of equipment simultaneously.
Electrochemical techniques are processed waste water does not need chemical agent consumption, is considered to a kind of green wastewater processing technology.But because three dimensional particles electrode exists some technical problems in research and application process, the application of three dimensional particles electrode is limited.Three phase 3 D electrochemical reactor as disclosed in patent ZL200820106122.9.Adopt flow lifting type electrolyzer, in tank room, anode and negative electrode are installed in both sides; Between pole plate, be filled with mosaic electrode, mosaic electrode below arranges aeration tube and water inlet pipe, makes mosaic electrode keep suspended state by aeration and hydraulic action, responds to mosaic electrode distribution by netted cathode-anode plate.The electrolyzer of this class formation will guarantee the suspended state of mosaic electrode, can not make again mosaic electrode sink to stopping up water inlet pipe and inlet pipe, and mosaic electrode can not flow out electrolyzer with waste water simultaneously, and therefore cell construction is more complicated, maintenance difficulty; And rely on aeration agitation to make mosaic electrode keep suspended state easily to form and stir dead angle; Aeration agitation need to keep certain intensity simultaneously, and energy consumption is higher; In addition mosaic electrode is had relatively high expectations, proportion can not be too large, and the use of electrode material is had to higher restricted condition; If the control of mosaic electrode suspended state is not good, form accumulation and easily form short-circuit current, affect current efficiency, and easily caused equipment failure.These defects have limited the application of three-dimensional electrochemical technology to a certain extent.
Utility model content
Deficiency and limitation that the utility model exists for electrochemical electrode, provide a kind of structure good, the electrode structure of excellent performance and electrolytic reaction groove.It is integrated that plate electrode and three dimensional particles electrode are carried out advantage by this electrode structure and electrolytic reaction groove, and the specific surface area of electrode increases greatly, increases with waste water contact area, and device processes efficiency is enhanced, and has solved the various defects of conventional three dimensional particles electrode.
For achieving the above object, the technical solution of the utility model is:
A kind of electrode structure, comprises mosaic electrode, and described electrode structure also comprises that steady arm, union lever and at least one are getting lines crossed; Described mosaic electrode is provided with through hole; Described getting lines crossed through the hole on some described mosaic electrodes, and the one end of getting lines crossed is being connected with described steady arm, and this other end of getting lines crossed is being connected with described union lever.
A kind of mosaic electrode, described mosaic electrode is provided with through hole.
The diameter of described mosaic electrode is preferably 3 mm~5mm.
Distance between described getting lines crossed is being preferably 5 mm-10mm.
Describedly get lines crossed, steady arm and union lever be all preferably insulating material.
The material of described mosaic electrode is the mixing of one or more materials in graphite, iron, aluminium, haydite, titanium grain, gac.
A kind of electrolytic reaction groove, comprise cell body, in cell body and be arranged on two noble electrodes of both sides, the electrolysis electrode between two noble electrodes, be positioned at cell body bottom aeration tube, be positioned at the water inlet pipe below aeration tube and be positioned at the water outlet of cell body top side wall, described electrolysis electrode is above-mentioned electrode structure in whole or in part, and the steady arm of described electrode structure is fixed on the top of cell body.
Spacing between described electrode structure is preferably 1 mm~10mm, more preferably 3mm.
The described noble electrode sheet material graphite electrode plate of electing as of fine quality, the two ends of fixed installation and electrolyzer.
Mosaic electrode after series connection is fixedly installed in electrolyzer by support bar, and lower end union lever is fixing, platy shaped particle electrode in electrolyzer in naturally drooping state.Under hydraulic disturbance and aeration stirring, can naturally swing, the Main Function of union lever is that the mosaic electrode that prevents bunchiness is wound into together under hydraulic disturbance.
Described mosaic electrode can be graphite, iron, aluminium, haydite, titanium grain, gac etc., these mosaic electrodes can also carry out surface modification with enhancement process effect, also can be the mixing of these particles, that is to say that mosaic electrode is can be by the granulometric composition of multiple unlike material.
Compared with prior art, the beneficial effects of the utility model are as follows:
1, that plate electrode and three dimensional particles electrode are carried out to advantage is integrated for the utility model, and the specific surface area of electrode increases greatly, increases with waste water contact area, and device processes efficiency is enhanced; Current are not only up-flow between pole plate in electrolyzer, and waste water can form transverse flow through pole plate, increase current and the substance transfer of pole plate both sides, make in electrolyzer current and mass transfer more even, and water treatment effect is obviously promoted.
2, to compare conventional three-dimensional mosaic electrode more easy to control for the state of mosaic electrode of the present utility model in electrolyzer.It is that fluidized state needs high-intensity aeration or stirring to maintain that traditional three dimensional particles electrode will be controlled mosaic electrode, and maintain uniform state to whipping appts require high, stir dead angle part otherwise be prone to, cause particle electrolysis to be piled up and affect equipment performance; Mosaic electrode of the present utility model is distributed in the solid space of whole reactive tank always uniformly, only need a small amount of aeration that mosaic electrode is swung and can meet the response behaviour requirement of mosaic electrode, and avoided the technical problems such as mosaic electrode accumulation, aeration dead angle and short-circuit current completely.Stabilization of equipment performance is high, and failure rate is little.
3, electrode structure of the present utility model in electrolyzer in naturally drooping state, under hydraulic disturbance and aeration effect, can freely swing, optimize and improved the hydraulics in electrolyzer, the mutual collision friction between electrode can also be eliminated degradation problem under the treatment effect that electrode passivation and polarization bring simultaneously.
4, electrode structure of the present utility model is installed and easy removal, can be used for three-dimensional electrolysis groove and also can be used for dull and stereotyped electrolyzer, wide for upgrading and the Combination application use range of electrochemical apparatus.The utility model electrode also can carry out Combination application with plate electrode, and plate electrode and the utility model electrode are carried out to interval layout, to adapt to the variation of processing demands.
Accompanying drawing explanation
Fig. 1 is electrode structure front elevation;
Fig. 2 is the electrode pattern side figure with partial enlarged drawing;
Fig. 3 is the mosaic electrode structural representation that is provided with perforation;
Fig. 4 is electrolyzer front section view;
Fig. 5 is electrolyzer side sectional view;
Wherein, the 1st, steady arm, the 2nd, get lines crossed, the 3rd, mosaic electrode, the 4th, union lever, the 5th, cell body, the 6th, aeration tube, the 7th, water inlet pipe, the 8th, water outlet, the 9th, inertia pole plate.The 10th, hole.
Embodiment
Below in conjunction with embodiment, the utility model is described further.
A kind of mosaic electrode, described mosaic electrode 3 is provided with through hole 10.
A kind of electrode structure, comprises mosaic electrode 3, and described electrode structure also comprises that steady arm 1, union lever 4 and at least one are getting lines crossed 2; Described mosaic electrode 3 is provided with hole 10; Describedly get lines crossed 2 through the holes 10 on some described mosaic electrodes 3, and 2 the one end of getting lines crossed is being connected with described steady arm 1, this other end of 2 of getting lines crossed is being connected with described union lever 4.
The diameter of described mosaic electrode 3 is 5mm.Described distance of getting lines crossed between 2 is being 5 mm.
Describedly get lines crossed 2, steady arm 1 and union lever 4 be insulating material.Described mosaic electrode 3 is graphite granule electrode or metallic particles electrode.
A kind of electrolytic reaction groove, comprise cell body 5, in cell body and be arranged on two noble electrodes 9 of both sides, the electrolysis electrode between two noble electrodes 9, be positioned at cell body 5 bottoms aeration tube 6, be positioned at the water inlet pipe 7 below aeration tube 6 and be positioned at the water outlet 8 of cell body 5 top side wall, described electrolysis electrode is above-mentioned electrode structure in whole or in part, and the steady arm 3 of described electrode structure is fixed on the top of cell body 5.Spacing between described electrode structure is 3mm.Described noble electrode sheet material matter is graphite electrode plate, is fixedly installed in the two ends of electrolyzer.
application:
Certain small-sized leather processing enterprise electrochemical processing apparatus is transformed with above-mentioned electrode structure and electrolytic reaction groove.The original design treatment capacity of this sewage treatment equipment is 600m
3/ h, main processing pollutent is COD(4000~5000mg/L) total chromium (50~60mg/L) and sexavalent chrome (10~30mg/L), original treatment facility adopts three-dimensional electrochemical treatment technology, and mosaic electrode adopts graphite material, and is mixed with part irony mosaic electrode.Before transformation, equipment fluctuation of service, mosaic electrode is difficult to control (particularly irony mosaic electrode than great, more difficult control), and aeration intensity is large, and energy consumption is higher, and it is unstable to process effluent quality, and the dismounting and change process of electrode is loaded down with trivial details.After adopting the utility model electrode pair equipment to transform, treatment facility performance is significantly improved, and mosaic electrode material is chosen as graphite; Adopt iron pole plate and pole plate of the present utility model to carry out mixed-arrangement.Maintain in the immovable situation of original state in other operational conditions, aeration intensity greatly reduces, and equipment aeration power consumption reduces by 90%; Treatment facility is promoted to more than 90% by original 50%~85% the clearance of COD; Total chromium and chromic clearance are promoted to more than 99% by original 80%~90%.Stable equipment operation, seldom breaks down.