CN105293643A - Method for treating sewage through electrolytic catalysis oxidation - Google Patents

Method for treating sewage through electrolytic catalysis oxidation Download PDF

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Publication number
CN105293643A
CN105293643A CN201410330935.6A CN201410330935A CN105293643A CN 105293643 A CN105293643 A CN 105293643A CN 201410330935 A CN201410330935 A CN 201410330935A CN 105293643 A CN105293643 A CN 105293643A
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sewage
resin
catalytic
cod
catalyst
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CN105293643B (en
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梁斌
李留忠
李波
张立红
郭卫东
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China Petroleum and Chemical Corp
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China Petroleum and Chemical Corp
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Abstract

The invention belongs to the technical field of sewage treatment, and particularly relates to a method for treating sewage through electrolytic catalysis oxidation. The method comprises the following steps: firstly preparing a chelating catalysis oxidation resin catalyst; then, adding sewage into an electrolytic catalysis oxidation reaction tank; adding the chelating catalysis oxidation resin catalyst into the reaction tank; applying voltage between the cathode plate and the anode plate of the reaction tank; arranging an oxygenic aeration facility at the lower part of the reaction tank; observing the sewage treatment effect through a COD (chemical oxygen demand) on-line analyzer; when the sewage COD reaches a target value, stopping electrolysis, so as to obtain the target effluent, wherein the chelating catalysis oxidation resin catalyst comprises active components and a carrier; the carrier is chelating resin. The method can be used for treating sewage which contains complex components and various pollutants and is high concentration, and difficult to biodegrade, secondary pollution is avoided, the COD is below 50 mg/L, and the sewage is discharged after reaching standards.

Description

The method that catalytic and oxidative electrolysis technology is disposed of sewage
Technical field
The invention belongs to technical field of sewage, be specifically related to a kind of method that catalytic and oxidative electrolysis technology is disposed of sewage.
Background technology
Developing rapidly in recent years along with industry, quantity discharged and the discharge kind of industrial sewage increase year by year, especially petrochemical industry, its discharge sewage in not only complicated and also various Pollutant levels high.Biochemical treatment process due to less investment, simple to operate, processing cost is low, effect stability, is the method that petrifaction sewage process preferentially adopts always.The sewage that fractions is simple, toxicity is lower, biological degradability omit can by qualified discharge after existing biochemical processing process, but the process of the sewage of many biological degradability differences employing biochemical process is but difficult to reach emission standard.Along with the increasingly stringent of sewage drainage standard, even the good sewage of degradability only is also difficult to reach new emission standard through biochemical treatment.Therefore, to the key being treated as solution petrifaction sewage upgrading qualified discharge of difficult for biological degradation sewage.
Difficult for biological degradation sewage is ubiquity in each manufacturing enterprise of petrochemical industry, as the reuse water of chemistry water, the reverse osmosis concentrated water, chemical waste alkaline liquor etc. of wastewater reusing device.Particularly high-sulfur, high-acid crude oil exploitation and processing ratio in cumulative year after year, the oil product course of processing is made to create the electric desalting draining of obvious emulsification and supersalinity, if it is entered Treatment stations process together with other sewage, except increasing Sewage treatment systems load, its high salinity also can cause disadvantageous effect to biochemical system.The domestic method to difficult for biological degradation sewage disposal and basically identical abroad, main method is biological einforcement method, physico-chemical process and advanced oxidation processes.Wherein, advanced oxidation water technology emerging in recent years, has become the hot subject of domestic and international water treatment research field.The basis of high-level oxidation technology is to use photoirradiation, electricity, sound, catalyzer, sometimes be combined with oxygenant, produce the extremely strong free radical (as OH) of oxidisability in the reaction, again by the adduction between free radical and organic compound, replacement, transfer transport, scission of link etc., make hardly degraded organic substance oxidative degradation in water body become low toxicity or nontoxic small-molecule substance, be even directly degraded into CO 2and H 2o, close to permineralization.Choose difference according to oxygenant and catalyzer, high-level oxidation technology can be divided into following a few class substantially, Fenton and Fenton-like method, wet oxidation process, photochemical oxidation method and photocatalytic oxidation, Ozonation and electrolytic oxidation etc.It is generally acknowledged, electrolytic oxidation essence is electrode, electrolyte interface there occurs the reaction of redox couple, the transfer of electric charge creates active group OH and carrys out oxidation of organic compounds, objectionable impurities in waste water is made to carry out redox reaction on anode and negative electrode, be deposited in electrode surface or precipitate in a cell, or generate gas and overflow from water, thus reduce the concentration of objectionable impurities in waste water or toxic substance is become nontoxic, low toxicity material.The electrochemical reactor realizing electrolytic acid cleaning oxydation process is electrolyzer, and it is made up of two electrodes (first class conductor) and ionogen (second class conductor), after passing into electric current, electrochemical reaction occurs under external power effect by outside.In a cell in order to make reaction become possibility, or in order to make reaction carry out with a certain speed, relevant voltage must be added in activation energy electrolyzer reached needed for organic matter degradation, this impressed voltage is called groove pressure in actual applications.In general, the hydroxyl free base unit weight produced in the larger then system of groove pressure is more, and for making water outlet COD up to standard in practical application, the additional groove pressure as motivating force needs to adjust according to water quality.But it is higher to apply voltage to system, and corresponding energy consumption increases, and should consider and choose suitable voltage.
As Radha etc. adopts electrochemical oxidation process (graphite rod is anode, and stainless steel is negative electrode) to process textile industry sewage, COD of sewage, TOC clearance are 68%; Panizz etc. adopt electrochemistry flocculation (iron is anode electrode) and electrochemical oxidation (boron-doped diamond is anode) to car-washing sewage degradation treatment, and COD of sewage clearance is 75%, power consumption 0.14kWhm -3.Electrolytic oxidation is a kind of effective sewage treatment process, and its easy and simple to handle being easy to controls, and is that biological process and physico-chemical process are incomparable.The advantage of electrolytic oxidation technology is:
(1) OH produced in process has strong oxidizing property, can react without the organic pollutant selectively directly and in sewage, be degraded to carbonic acid gas, water and simple organic, high and do not produce pollution to the sewage disposal degree of depth, therefore, " environmental friendliness " technology is called as.
(2) reaction conditions is gentle, generally just can carry out at normal temperatures and pressures.
(3) both can individual curing, can combine with other treatment technology again, as the pre-treatment as biochemical process, in order to improve the biodegradability of sewage; Also as biochemical process aftertreatment, the treating depth of sewage can be improved.
But for petroleum chemical enterprise's sewage of complicated component, wide variety, also there is a lot of problem in this technology, as: analyse oxygen, liberation of hydrogen side reaction, energy consumption greatly, in actually operating and treatment effect, still have different limitation.Since the eighties in 20th century, along with people are to deepening continuously of being familiar with of environmental science and the raising day by day to environmental requirement, catalyzer is applied in electrolytic oxidation water technology field, make catalytic and oxidative electrolysis technology water technology have the advantage that low groove pressure is run, the degree of depth reduces COD, and cause the interest of numerous environmental worker.Such as Fe 2+salt catalyst has lower electropotential, can occur and Fe in lower groove pressure 3+the reaction of the redox couple of salt, produces active group OH and carrys out oxidation of organic compounds, can reach the activation energy that oxidation operation decomposes, make electrochemical reaction have higher speed of reaction under lower groove pressure and energy consumption.Under the prerequisite that electric field is certain, electrocatalytic reaction speed is comparatively large by the activity influence of catalyzer, generally can select metal that electropotential is lower or its esters.Catalyzer both can be general independent active ingredient, also can by active constituent loading on carrier, and catalyst resin is latter event.
In domestic traditional water treatment, catalytic and oxidative electrolysis technology technology is not also used widely, mainly short owing to exploring the time, basic theory is also very imperfect, add actual contaminated system complexity various, make this technology all there is the problem much requiring study and solve in theoretical investigation or practical application.The effect of catalyzer at catalytic and oxidative electrolysis technology of small part documents, such as, drop into NaCl, FeSO respectively in sewage 4, Ni 2o 3, Na 2sO 4deng as additive to improve the conductive capability of sewage, having investigated the change of COD clearance with additive dosage, though can improve the clearance of COD, is also the secondary pollution to water quality.Such as patent of invention CN1522968A, disclose a kind of heterogeneous multiple catalyzing electrolysis oxidation sewage treatment method and device, with gac, graphite, coke, inorganic carrier or resin particle do solid adsorption material, with graphite, noble metal or plain carbon stool do electrode materials, with water-soluble iron, aluminium, magnesium or manganese metal-salt are catalyzer, adopt below 36V safety voltage, constitute sewage physical-chemical-electrolytic processing apparatus that has comprehensive subtractive process, for the pre-treatment before biochemistry and the advanced treatment of wastewater after biochemistry, but owing to not doing special process process to metal salt catalyst, need continuous supplementation metal salt catalyst, dropping in sewage makes the metal content in water outlet increase, the secondary pollution of easy formation water outlet metal ion.
Patent of invention CN101434443B, relate to a kind for the treatment of process and device of oil refining sewerage, oil refining sewerage is sent in catalytic and oxidative electrolysis technology reactor, with cobalt metal, copper, iron, manganese, nickel, one or more of vanadium or titanium are catalyst activity component, granules of catalyst is formed as carrier using activated carbon granule, reactor cathode-anode plate applies 10-36V volts DS, reactor lower part arranges oxygenic aeration facility, can advanced treatment oil refining electric desalting apparatus draining, the high density such as oil product and liquefied petroleum gas (LPG) saliferous composite waste, process water outlet decreases metal ion secondary pollution.But carry out electrolytic sewage catalyzed oxidation test with information that patent provides, and fail to reach the target of advanced treatment of wastewater.
High concentrated organic wastewater and divalent iron salt are placed in electrolyzer by patent CN1412124A, utilize dull and stereotyped return-flow type electrolysis mode, improve the speed of reaction of ferric iron at negative electrode, and then improve electrochemical reduction efficiency, and hydrogen peroxide is added continuously in reaction process, make it and reduce gained ferrous iron and can constantly react generation ferric iron, making ferric iron in solution maintain high level to ferrous ratio always, keep high treatment efficiency.But this method needs to consume a large amount of hydrogen peroxide, and lack the larger catalytic carrier of surface-area, there is water outlet generation metal secondary pollution problem equally.
Patent CN102557308B discloses a kind of method for treating coal tar sewage, to process through pretreated coal tar sewage input Catalytic Wet Oxidation unit, Catalytic Wet Oxidation unit process pressure is 3-9Mpa, temperature of reaction is 200-290 DEG C, catalyzer can be noble metal catalyst, metal oxide catalyst and composite metal catalyst, residence time 45min-75min, removes COD, ammonia nitrogen, volatile phenol, CN-, the sulfide in sewage; Electrolysis advanced oxidation unit is entered after the water outlet of Catalytic Wet Oxidation unit, described electrolysis advanced oxidation unit adopts solid diamond alloy as positive and negative polarities, two pole tensions are 220 volts, electric current is 20-80A, by being energized to the two poles of the earth, make the water electrolysis in sewage, produce the hydroxyl with high oxidative, hydroxyl is by further oxygenolysis of pollutent such as COD remaining in sewage, ammonia nitrogen, volatile phenols.Sewage treatment systems effluent index is made to reach primary standard in " integrated wastewater discharge standard ".But process relates to High Temperature High Pressure operation, and construction investment and working cost are also higher.
Patent CN103721746A discloses a kind of electrolytic oxidation Industrial Wastewater Treatment and meets Catalysts and its preparation method, it is characterized in that activity component metal ion load on sulphonated polystyrene resin carrier, provide that a kind of catalytic activity is high, catalytic and oxidative electrolysis technology Industrial Wastewater Treatment Catalysts and its preparation method that active ingredient good dispersity, work-ing life are longer, filler as electrolysis-catalytic oxidation device is used for the process of catalyzed oxidation waste water difficult for biological degradation, and waste water COD place to go rate is greater than 75%.But this support of the catalyst is owing to being cationic ion exchange resin, in actual sewage treating processes, what the active ingredient of institute's load can be a small amount of occurs to exchange with sewage cationic and forms water pollution once again.
In these patents and document, scientific research and business unit develop with regard to electrolytic reaction pond shape, electrode materials, catalyst loading pattern etc., or different advanced oxidation mode has been carried out various combination, to breaking through in sewage disposal, do not do in resin catalyst and more further investigate, or use typical catalyst, adds the secondary pollution of water quality simultaneously.Along with the increasingly stringent of national water quality standard and the pressing needs of Treated sewage reusing, conventional biochemical method and physico-chemical process are difficult to reach water quality requirement, so just for catalytic and oxidative electrolysis technology technology brings opportunity.The genesis mechanism of further investigation catalytic and oxidative electrolysis technology, the existing technique of rational modification is also developed novel process and is just become the task of top priority.Chelating ion exchange resin is that a class can form the crosslinked functional high molecule material of many co-ordination complexs with metal ion, there is the atoms such as O, N, S, P, the As with key lone-pair electron in its function base, these nuclear power carry out coordination with the unoccupied orbital of lone-pair electron and metal ion and form coordinate bond, form the rock steady structure similar to small molecules inner complex.Compared with conventional ion exchange resin, the bonding force of resin and metal ion is stronger.
Summary of the invention
The object of this invention is to provide a kind of method that catalytic and oxidative electrolysis technology is disposed of sewage, be used for processing complicated, difficult for biological degradation sewage that various Pollutant levels are high, and secondary pollution can not be produced to water quality, make sewage qualified discharge.
The method that catalytic and oxidative electrolysis technology of the present invention is disposed of sewage first prepares chelating type catalyzed oxidation resin catalyst, then sewage is joined in catalytic and oxidative electrolysis technology reactive tank, add chelating type catalyzed oxidation resin catalyst in reactive tank simultaneously, voltage is applied between reactive tank cathode-anode plate, reactive tank bottom arranges oxygenic aeration facility, observe wastewater treatment efficiency by COD on line analyzer, when COD of sewage reaches target value, stop electrolysis, obtain target water outlet;
Described chelating type catalyzed oxidation resin catalyst comprises active ingredient and carrier, and carrier is resin.
Described resin is N, O dentate resin, N, N dentate resin, O, O dentate resin, the one in sulfur-bearing resin or phosphorous resin.
Described active ingredient is one or more in iron, copper, manganese, chromium, nickel, vanadium or titanium metal ions.
The charge capacity of described active constituent is 1-15%.
The add-on of described chelating type catalyzed oxidation resin catalyst is the 10-70% of reactive tank volume.
Described voltage is 10-36V.
Described chelating type catalyzed oxidation resin catalyst loads on resin by having reactive components, obtains the resin catalyst of stable performance.Wherein support of the catalyst is mainly the carrying effect that active ingredient provides effective, stable, general requirement carrier has suitable pore structure, physical strength, temperature stability etc., the active ingredient of catalyzer can reduce the electropotential of redox reaction in electrolytic process, can reach the object that deeply treating wastewater reduces its COD in same groove pressure with energy is consuming time.
Described catalyst bearing extent, comprises various types of resin.Chelating ion exchange resin is that a class can form the crosslinked functional high molecule material of many co-ordination complexs with metal ion, there is the atoms such as O, N, S, P, the As with key lone-pair electron in its function base, these nuclear power form coordinate bond with lone-pair electron and metal ion, form the rock steady structure similar to small molecules inner complex.According to the type of ligating atom, N, O dentate resin can be divided into, comprise aminocarboxylic acids and derivative kind thereof; N, N dentate resin, comprises the kinds such as polyamines class, pyridines, oximes, pyrazoles, imidazoles, guanidine class, schiff base; O, O dentate resin, comprises the kinds such as hydroxycarboxylic acid, beta-diketon class, phenols; Sulfur-bearing resin, comprises the kinds such as thiourea resin, sulfydryl resin, Thiol-amino resin; Phosphorous resin, comprises the kinds such as phosphonic acid resin, phosphoramidic-resin, α-amido phosphine ester base resin.Its particle diameter is 10-100 order.
The active ingredient of catalyzer can reduce the electropotential of redox reaction in electrolytic process, can reach the object that deeply treating wastewater reduces its COD in same groove pressure with energy is consuming time.Described active constituent load, for load is carried out in one or more mixing independent of iron, copper, manganese, chromium, nickel, vanadium or titanium metal ions, with arbitrarily than mixing during several mixing, pass through ion-exchange, active constituent and resin carrier form firm complex compound, and charge capacity is 1-15%.
Described catalytic and oxidative electrolysis technology reactive tank, electrode that can be different according to sewage type selecting, cathode-anode plate can be Graphite Electrodes, common stainless steel electrode, lead dioxide electrode, Activated Carbon Fiber Electrodes etc.
Apply voltage between described reactive tank cathode-anode plate, can require to select voltage 10-36V according to sewage type and effluent quality, service temperature is 0-80 DEG C.
The present invention is processed complicated, difficult for biological degradation sewage that various Pollutant levels are high by the method for catalytic and oxidative electrolysis technology, the various sewage of electrolysis oxide treatment is carried out by adding chelating resin catalyzer, and secondary pollution can not be produced to water quality, technology key be by chelating resin catalyst application in the sewage treatment process of catalytic and oxidative electrolysis technology.
The present invention compared with prior art, has following beneficial effect:
The present invention can be used to process complicated, difficult for biological degradation sewage that various Pollutant levels are high, and do not produce secondary pollution, COD, lower than 50mg/L, makes sewage qualified discharge.
Embodiment
Below in conjunction with embodiment, the present invention is described further.
Embodiment 1
Polystyrene amido phosphoric acid type resin D402, for containing phosphorous resin, in this, as support of the catalyst, first prepares chelating resin catalyzer, then carries out electrolytic sewage catalyzed oxidation test with this catalyzer.
The first step, prepared by resin catalyst
Chelating ion exchange resin D402 pattern of dispatching from the factory is sodium (Na) type, water content 50% ~ 60%, first with impurity such as a large amount of soft water cleaning removing floating matters; Then use 6% dilute hydrochloric acid drip washing for several times, until pouring fluid pH value reaches the acidifying of 5 ~ 6, Na type resin change into hydrogen (H) type; Again with 10% Fe (NO 3) 39H 2the drip washing of O salts solution, carries out active constituent Fe 2+the load of salt; Treat that ion-exchange is complete, with about 5 times of volume water wash resins, to remove free metal salt.Through aforesaid operations method, obtain Fe 2+the chelating resin catalyzer of salt, loads in beaker stand-by.
Second step, electrolytic sewage catalyzed oxidation test
Use Fe prepared by above method 2+salt chelating resin is as catalyzer, and certain petrochemical refining's electric desalting waste water that to be applied to through biological process pre-treatment COD be 180mg/L carries out catalytic and oxidative electrolysis technology, and pH value is adjusted to 3.5.Wherein electrolyzer volume is 5L, and electrode is Graphite Electrodes, response voltage 15V, reaction current 0.8A, effluent flow rate 2L/h, the air amount of blasting 80ml/min, and loaded catalyst is 30% of electrolyzer volume.Water outlet non-metallic ion detects, observe wastewater treatment efficiency by COD on line analyzer, COD is as shown in table 1.
Embodiment 2
Compared with embodiment 1, difference is response voltage 25V, and effluent flow rate is 3L/h, the air amount of blasting 100ml/min, and loaded catalyst is 20% of electrolyzer volume, and all the other are identical with embodiment 1 test conditions.Water outlet non-metallic ion detects, COD is as shown in table 1.
Embodiment 3
Compared with embodiment 1, difference is the Cu (NO with 10% 3) 23H 2the drip washing of O salts solution, carries out active constituent Cu 2+the load of salt, obtains Cu 2+the chelating resin catalyzer of salt, loads in beaker stand-by.
Use Cu prepared by above method 2+salt chelating resin is as catalyzer, and compared with embodiment 1, difference is response voltage 10V, and loaded catalyst is 40% of electrolyzer volume, and all the other are identical with embodiment 1 test conditions.Water outlet non-metallic ion detects, COD is as shown in table 1.
Embodiment 4
Compared with embodiment 3, difference is response voltage is 36V, and effluent flow rate is 3L/h, and the air amount of blasting is 100ml/min, and loaded catalyst is 10% of electrolyzer volume, and all the other are identical with embodiment 3 test conditions.Water outlet non-metallic ion detects, COD is as shown in table 1.
Embodiment 5
Polystyrene amido diethyl acid type resin D401 is N, O dentate resin, in this, as support of the catalyst, and Fe 2+salt, Cr 3+salt is that active ingredient prepares chelating resin catalyzer, then carries out electrolytic sewage catalyzed oxidation test with this catalyzer.Resin catalyst preparation process is identical with embodiment 1, and carries out catalytic and oxidative electrolysis technology test with embodiment 1 the same terms.Water outlet non-metallic ion detects, COD is as shown in table 1.
Embodiment 6
Compared with embodiment 5, difference is Cu 2+salt, Ti 2+salt is that active ingredient prepares chelating resin catalyzer, and response voltage is 20V, and loaded catalyst is 60% of electrolyzer volume, and all the other are identical with embodiment 5 test conditions.Water outlet non-metallic ion detects, COD is as shown in table 1.
Embodiment 7
Polystyrene dithiocarbamic acid type resin D403 is sulfur-bearing resin resin, in this, as support of the catalyst, and Cu 2+salt is that active ingredient prepares chelating resin catalyzer, and all the other and embodiment 6 the same terms carry out catalytic and oxidative electrolysis technology test.Water outlet non-metallic ion detects, COD is as shown in table 1.
Embodiment 8
Water oxygen acid-urea-formaldehyde resins is O, O dentate resin, in this, as support of the catalyst, and Cu 2+salt, Ni 2+salt, V 5+salt is that active ingredient prepares chelating resin catalyzer, and resin catalyst preparation process is identical with embodiment 1, then carries out electrolytic sewage catalyzed oxidation test with this catalyzer.
Use chelating resin prepared by above method as catalyzer, response voltage 10V, effluent flow rate is 2L/h, the air amount of blasting 100ml/min, and loaded catalyst is 50% of electrolyzer volume, and all the other are identical with embodiment 1 test conditions.Water outlet non-metallic ion detects, COD is as shown in table 1.
Embodiment 9
Amidoxime group polyacrylonitrile-divinylbenzene resin is N, N dentate resin, in this, as support of the catalyst, and Ni 2+salt, Mn 2+salt is that active ingredient prepares chelating resin catalyzer, and resin catalyst preparation process is identical with embodiment 1, then carries out electrolytic sewage catalyzed oxidation test with this catalyzer.
Use chelating resin prepared by above method as catalyzer, compared with embodiment 6, response voltage 36V, loaded catalyst is 70% of electrolyzer volume, and all the other are identical with embodiment 6 test conditions.Water outlet non-metallic ion detects, COD is as shown in table 1.
Comparative example 1
Compared with embodiment 1, difference is not for add resin catalyst, and all the other are identical with embodiment 1 test conditions.COD of sewage changing conditions is as shown in table 1.
Comparative example 2
Compared with embodiment 1, difference is not for add resin catalyst, and improve electrode voltage to 36V, the air amount of blasting is increased to 100ml/min, and other test conditions is constant, carries out sewage disposal.COD of sewage changing conditions is as shown in table 1.
Comparative example 3
Compared with embodiment 1, difference is not for add resin catalyst, and improve electrode voltage to 36V, the air amount of blasting is increased to 100ml/min, and effluent flow rate is down to 1L/h, and other test conditions is constant, carries out sewage disposal.COD of sewage changing conditions is as shown in table 1.
Comparative example 4
Compared with embodiment 1, difference be add only through pickling transformation without the D402 resin of active constituent loading, other test conditions is constant, carries out sewage disposal.COD of sewage changing conditions is as shown in table 1.
Comparative example 5
Compared with embodiment 1, difference be add only through pickling transformation without the D402 resin of active constituent loading, and improve electrode voltage to 36V, the air amount of blasting is increased to 100ml/min, effluent flow rate is down to 1L/h, resin loadings is 70% of electrolyzer volume, and other test conditions is constant, carries out sewage disposal.COD of sewage changing conditions is as shown in table 1.
Comparative example 6
Compared with embodiment 1, take gac as support of the catalyst, carry out active constituent Fe 2+the load of salt, all the other are identical with embodiment 1 test conditions.Water outlet has trace iron ions to detect, COD is as shown in table 1.
Embodiment and comparative example main experimental condition and COD of sewage changing conditions are in table 1, and water outlet COD target value is lower than 50mg/L.
Table 1 test conditions and COD of sewage changing conditions
As can be seen from the table, compared with conventional electrolyzing sewage technology, chelating resin catalyst application, in electrolytic sewage catalytic oxidation process for treating, significantly can reduce COD of sewage under, the lower operational condition of groove pressure higher at waste water flow velocity, make to process rear sewage qualified discharge.

Claims (6)

1. the catalytic and oxidative electrolysis technology method of disposing of sewage, it is characterized in that first preparing chelating type catalyzed oxidation resin catalyst, then sewage is joined in catalytic and oxidative electrolysis technology reactive tank, add chelating type catalyzed oxidation resin catalyst in reactive tank simultaneously, apply voltage between reactive tank cathode-anode plate, reactive tank bottom arranges oxygenic aeration facility, observes wastewater treatment efficiency by COD on line analyzer, when COD of sewage reaches target value, stop electrolysis, obtain target water outlet;
Described chelating type catalyzed oxidation resin catalyst comprises active ingredient and carrier, and carrier is resin.
2. the catalytic and oxidative electrolysis technology according to claim 1 method of disposing of sewage, it is characterized in that described resin is N, O dentate resin, N, N dentate resin, O, O dentate resin, the one in sulfur-bearing resin or phosphorous resin.
3. the catalytic and oxidative electrolysis technology according to claim 1 method of disposing of sewage, is characterized in that described active ingredient is one or more in iron, copper, manganese, chromium, nickel, vanadium or titanium metal ions.
4. the method that the catalytic and oxidative electrolysis technology according to claim 1 or 3 is disposed of sewage, is characterized in that the charge capacity of described active constituent is 1-15%.
5. the catalytic and oxidative electrolysis technology according to claim 1 method of disposing of sewage, is characterized in that the add-on of described chelating type catalyzed oxidation resin catalyst is the 10-70% of reactive tank volume.
6. the catalytic and oxidative electrolysis technology according to claim 1 method of disposing of sewage, is characterized in that described voltage is 10-36V.
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CN107774327A (en) * 2016-08-27 2018-03-09 中国石油化工股份有限公司 Electrolytic sewage catalyst and preparation method thereof
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