CN106927544A - The method of electrocatalytic oxidation water treatment facilities and its treatment organic wastewater with difficult degradation thereby - Google Patents
The method of electrocatalytic oxidation water treatment facilities and its treatment organic wastewater with difficult degradation thereby Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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Abstract
A kind of method of electrocatalytic oxidation water treatment facilities and its treatment organic wastewater with difficult degradation thereby, the device includes at least two electrolytic cells being connected with each other, positive and negative pole battery lead plate is respectively equipped with each electrolytic cell, each anode electrode plate, cathode electrode plate are connected with the positive and negative electrode of power supply respectively, anode electrode plate uses ti-based coating plate, cathode electrode plate to use titanium plate；Method includes：By the filtering of pending organic wastewater, make waste water average, into electrocatalytic oxidation water treatment facilities；It is connected with the pulse power in electrocatalytic oxidation water treatment facilities, organic wastewater is fully electrochemically reacted under the effect of positive and negative pole battery lead plate.Apparatus structure design of the invention is simple, it is energy-efficient organic wastewater to be processed with it, water technology such as oxidation water technology is combined and is carried out process combination treatment or advanced treating to the sewage of enterprise's generation with general chemistry for it, industrial applications are capable of achieving, the trade effluent after treatment can return to the technological process of production and be used as recycled water or qualified discharge.
Description
Technical field
The present invention relates to technical field of sewage, a kind of electrocatalytic oxidation water treatment facilities and its difficult drop for the treatment of are referred in particular to
The method for solving organic wastewater.
Background technology
With the production-scale continuous expansion of modern industry and development, especially in mine metallurgy, petrochemical industry, You Jihe
Into, medication chemistry, butcher various industries such as processing, pesticide synthesis, textile printing and dyeing, food processing, electronic material, the industry of discharge
Wastewater Pollutant has that the content that strong toxicity, biodegradability are poor, pollutant component is complicated, have is high, content that is having is low but extremely difficult
The features such as degraded.Severe contamination environment, causes water body to deteriorate, and the harm to human health and living environment is also more prevalent and tight
Weight.
China continues to develop and constantly improve with sewage disposal technology, the simple pollutant of composition, biological degradability
The good organic sewage of energy can effectively have been administered and controlled.Bioanalysis is that to administer above-mentioned sewage at present most economical maximally effective
Method.But have that some trade effluent concentration are high, extremely difficult biodegradation, in the urgent need to new method goes to process in this kind of sewage
Organic and inorganic pollutant.
At present, electrochemical process is applied as a kind of effective means of sewage disposal, and the method can be in normal temperature and pressure bar
Carried out under part, its is adaptable, technological process and electrochemical apparatus are simple, and it has floor space small, process cycle is short, can
Controlling is strong, high treating effect, non-secondary pollution, it is stable the characteristics of.It is " green environment is friendly " water of environmental protection
Treatment technology.But, occurring that unit power consumption is larger in actual moving process, operating cost shortcoming higher makes electrochemical process
Development and application receive certain limitation.
Electrochemical techniques are divided into two parts：A part is light electrolysis (galvanic interaction) technology, is that chemical energy is converted into electricity
The process of energy is considered as reversible process；Another part is electrolysis (electrolytic cell reaction) technology, and electric energy is converted into the process of chemical energy, is
Irreversible reaction battery, its essence is that the particle and solid phase of water phase are the electrode reaction carried out between electrode material interface.
Galvanic cell electrode reaction (micro-electrolysis reaction)：
Galvanic cell is a kind of chemical energy is discharged and the device of electric energy is converted into.The present apparatus is electrode group using Fe, C
Into electrode form numerous small galvanic cell, it is substantially to carry out galvanic cell electrode reaction, using organic wastewater as electricity
Solution liquid, while plus being aerated, negative reaction generation Fe2+Ion, carbon adsorption oxygen constitutes positive pole reaction (also referred to as cathode reaction), because of O2
Reduction reaction normal potential than H+The normal potential of reduction reaction is high, φ ° of (O of its normal potential2/H2O)=1.229V,
Can be produced such as oxygen radical ion O in negative electrode2 -、H2O2, the hydroxyl radical free radical OH of decomposition extremely strong oxidant intermediate product：
(1) being electrolysed qualitative response is：Fe2++2H2O2→Fe3++OH-+ OH ([OH], ε °=2.80v) (1)
The extremely strong oxidant intermediate product such as OH of generation so that the organic macromolecule in waste water is oxidized how disconnected to occur
Chain degradation changes into small molecule, improves the biodegradability of waste water, and being mineralized for having is CO2And H2O final products, what is had has
Organic pollutants are broken down into organic electrically charged " fragment " and are sunk by the flocculant adsorption-flocculation that below equation (2), (3) are formed
Form sediment, then COD parts remove.
(2) hydrolysis：Fe2++2OH-→Fe(OH)2 (2)
Oxidation reaction：2H++2Fe(OH)2+O2 -→2Fe(OH)3 (3)
Due to the spontaneous limitation for carrying out of light electrolysis electrode reaction, therefore, combination electrolytic cell water treatment technology, powers up in addition
The electrolytic cell device of the anodizing reaction of pressure makees further wastewater treatment.
Electrolytic cell electrode reacts：
Wastewater treatment is mainly by there is Electro-catalytic Oxidation Process at the electrode surface, the pole that its electrode can be produced directly
Strong oxidability and to hydroxyl radical free radical [OH] (ε °=2.80v, p=of organic matter and inorganic matter non-selectivity
569.3Kj) the pollutant in deoxidation water, makes pollutant by thorough mineralising, i.e. referred to as electrochemical combustion process；If in the aqueous solution
Containing as CI-、SO4 2-Such electrolyte is as used：Sodium sulphate, chlorine, hypochlorite and chlorate etc..The peroxide of generation
Such as S2O8 2-、H2O2Deng the pollutant in institute's catalysis oxidation water, the process is referred to as electrochemical conversion process, so that electroxidation is effectively
COD in removal waste water.
Some key reactions in electrolytic process are as follows：
Anode reaction：OH-→1/2O2+H2O+2e-；
Cathode reaction：O2+H2O+2e-→HO2 -+OH-；
Overall reaction：1/2O2+OH-→HO2 -；
It is electrolysed the peroxylradicals [HO for producing2 -], in the basic conditions, make to produce secondary reaction in waste water so that dirty
Dye thing is so as to degrade or directly be decomposed into CO2, or it is converted into other simple compounds.
Electrolytic process obeys Faraday's law.The amount of material separated out i.e. on electrode with by the current strength of solution and logical
The time of electricity is directly proportional.Equally, the organic pollution in removal waste water also complies with Faraday's law.It is organic in waste water is removed
During pollutant, and do not need exhaustive oxidation into final product be CO2And H2O, it is only necessary to which organic pollutant molecule is broken
Chain, is torn into electrically charged organic matter " fragment ", and removal organic polluter is removed by being electrolysed adsorption-flocculation sedimentation.
Power supply uses pulse electrolysis power supply, is to be repeated continuously the operation for carrying out " power supply-power-off-power supply " according to its characteristic
Process, makes electrolytic efficiency be greatly enhanced, because conduction time is less than electrolysis treatment total reaction time (power supply-power-off
It is a cycle), due to the product that electrical power is electric current and voltage, if the average value of pulse voltage is the one of the direct current supply time
Half, equally, the average value of pulse current is the half of direct current supply time, therefore electric energy consumption is only the 1/4 of the direct current supply time, if
When cycle is 3/4, electric energy consumption is only the 9/16 of direct current supply time.As can be seen here, pulse power supply can greatly save electric energy.Separately
Outward, electrode reaction off and on, is conducive to Particle diffusion, reduces concentration polarization, makes electrolytic process time-saving energy-saving.
The content of the invention
It is an object of the invention to provide a kind of electrocatalytic oxidation water treatment facilities and its treatment organic wastewater with difficult degradation thereby
Method, apparatus structure design is simple, and it is energy-efficient to process organic wastewater with it, its with general chemistry oxidation water technology,
The water technology such as coagulation and filtration sedimentation and membrane bioreactor is combined to be carried out at process combination to the sewage that enterprise produces
Reason or advanced treating, are capable of achieving industrial applications, and the trade effluent after treatment can return to the technological process of production to be made as recycled water
With or qualified discharge.
In order to achieve the above object, the present invention provides a kind of electrocatalytic oxidation water treatment facilities, including at least two
The electrolytic cell of interconnection, is respectively arranged with anode electrode plate and cathode electrode plate, each anode electricity in each electrolytic cell
Pole plate is connected with the positive pole of power supply, and each cathode electrode plate is connected with the negative pole of power supply, and the anode electrode plate uses titanium-based
Clad plate, the cathode electrode plate uses titanium plate.
Electrocatalytic oxidation water treatment facilities of the present invention, the plurality of anode electrode plate is mutual with multiple cathode electrode plates
It is parallel and be spaced apart.
A kind of method for processing organic wastewater with difficult degradation thereby, it comprises the following steps：
(1) pending organic wastewater filtered, make waste water average, the electrocatalytic oxidation water described in claim 1 or 2
Processing unit；
(2) it is connected with the pulse power in the electrocatalytic oxidation water treatment facilities, makes organic wastewater in anode electricity
Fully it is electrochemically reacted under pole plate and cathode electrode plate effect.
The method of present invention treatment organic wastewater with difficult degradation thereby, wherein also including step：
(3) by the organic wastewater immigration tank diameter after step (2) electrocatalytic oxidation water chemical treatment, added under stirring
Flocculant stirring flocculation, sedimentation, filtering；
(4) pH value of filtered fluid is adjusted, the organic wastewater for the treatment of is carried out galvanic cell chemistry into micro-electrolysis reaction tower anti-
Should, reaction solution is moved into tank diameter, and it is 9 that pH value is adjusted under stirring, stirring flocculation, sedimentation, filtering；
(5) qualified discharge.
The method of present invention treatment organic wastewater with difficult degradation thereby, wherein also including step between the step (4) and (5)：
Filtered fluid after the chemical reaction discharge treatment of micro-electrolysis reaction tower, adjusts pH value, adds ferrous sulfate and stabilization is adjusted
After the pH value of section carries out complex reaction, downward ph adjustment adds hydrogen peroxide, removes the material and remaining COD of final residual；
The complex reaction liquid regulation pH value of exclusion is 8.5, sedimentation filtration.
The method of present invention treatment organic wastewater with difficult degradation thereby, wherein also including step between the step (4) and (5)：
Micro-electrolysis reaction tower produces the filtered fluid after discharge treatment, adds catalyst and stabilization pH value, adds hydrogen peroxide, removes
Remove the remaining COD of final residual；
The complex reaction liquid regulation pH value of exclusion is 8.5, sedimentation filtration.
After using such scheme, the method for electrocatalytic oxidation water treatment facilities of the present invention and its treatment organic wastewater with difficult degradation thereby
Have the advantages that：
1st, apparatus structure design of the invention is simple, and it is energy-efficient to process organic wastewater with it；
2nd, the method for present invention treatment organic wastewater with difficult degradation thereby is electricity by the two-stage electrochemical reactor using the present apparatus
Catalytic oxidation device for treatment of water and micro-electrolysis reaction tower, or combined with other water treatment technologies and carry out treatment of Organic Wastewater,
Make the technique complementation of each processing unit, maximize favourable factors and minimize unfavourable ones, play respective advantage, accomplish rational technology, can accomplish that COD is up to standard
Discharge or Treated sewage reusing, operating cost are reasonable.
Brief description of the drawings
Fig. 1 is the structural representation of electrocatalytic oxidation water treatment facilities of the present invention.
Specific embodiment
Embodiment 1
The method of present invention treatment organic wastewater with difficult degradation thereby, this embodiment is to select carrying gold the place of smelting organic cyanide wastewater
Manage, the water quality and quantity situation of the organic wastewater is：Water 100t/d, water quality condition COD：10440mg/L、TCN：5760mg/L、
Cu：3350mg/L、Zn：1310mg/L、Fe：690mg/L, pH value are 11.The step for the treatment of, includes：
(1) pH value of waste water for proposing golden cyanide wastewater discharge is 11 or so, and filtering makes waste water average, is directly entered electro-catalysis
Oxidation water treatment facilities, with reference to shown in Fig. 1, the device includes at least two electrolytic cells 1 being connected with each other, and divides in each electrolytic cell 1
Anode electrode plate 2 and cathode electrode plate 3 are not provided with, and each anode electrode plate 2 is connected with the positive pole of power supply 4, each cathode electrode plate 3
Negative pole with power supply 4 is connected, and anode electrode plate 2 uses ti-based coating plate, cathode electrode plate 3 to use titanium plate.Multiple anode electrodes
Plate 2 is parallel to each other and is spaced apart with multiple cathode electrode plates 3；
(2) it is connected with the pulse power in electrocatalytic oxidation water treatment facilities, in the left battery lead plate 2 of anode and cathode electrode plate 3
In the presence of be fully electrochemically reacted, process time is 4h；
(3) by the waste water immigration tank diameter after electrocatalytic oxidation water chemical treatment, flocculant stirring is added under stirring
Flocculation, sedimentation, filtering, 20~30min of process time；
(4) filtered fluid in step (3) is adjusted into pH value between 3~4, galvanic cell is carried out into micro-electrolysis reaction tower
Reaction is learned, reaction solution is moved into tank diameter, it is 9 that pH value is adjusted under stirring, stirring flocculation, sedimentation, filtering, process time
It is 30~40min；
(5) by the filtered fluid after the chemical reaction discharge treatment of micro-electrolysis reaction tower, when regulation pH value is 6, add sulfuric acid sub-
Iron and stabilization pH value are that pH value is reduced to 3 after 6 complex reaction 30min, add hydrogen peroxide, remove the cyanide and residue of final residual
COD, chemically react 1h；
(6) the complex reaction liquid regulation pH value for excluding is 8.5, sedimentation filtration, and it is left in 200mg/L that COD can stablize degraded
The right side, total cyanide can be down to 100mg/L or so.So that the concentration clearance about 90.4% of cyanide wastewater COD, total cyanide is dense
Degree clearance about 98.2%.
Repeat to test by many experiments room activated carbon again, water by activated carbon adsorption/catalytic oxidation treatment tail end water, water outlet COD
Index can drop to below 60mg/L, pollution index COD contains cyanide in itself, and TCN (mg/L) is down to less than 0.5.
Test data see the table below 1：Catalystic oxidation activated carbon method treatment advanced treating end cyanide wastewater result
| Use charcoal batch | 1 | 2 | 3 | 4 | 5 | 6 |
| Influent COD (mg/L) | 137.6 | 231.9 | 272.1 | 310.5 | 171.6 | 257.7 |
| Water outlet COD (mg/L) | 15.05 | 20.12 | 25.0 | 57.23 | 22.57 | 25.30 |
| TCN(mg/L) | 0.19 | 0.21 | 0.26 | 0.31 | 0.18 | 0.25 |
Embodiment 2
The method of present invention treatment organic wastewater with difficult degradation thereby, this embodiment is its main dirt to plastic reclaimed wastewater treatment
Dye thing has：PH value is 7~8, CODcr fluctuates in the range of 2000~4000mg/L, SS ripples in the range of 8000~10000mg/L
Dynamic, surfactant, a small amount of metal ion and nonmetallic ion etc., the present embodiment use electrochemical process two-stage advanced treating, its
The step for the treatment of, includes：
(1) 7.7 or so, filtering makes waste water average to the pH value of waste water of plastic reclaimed waste water discharge, is directly entered electro-catalysis
Oxidation water treatment facilities, with reference to shown in Fig. 1, the device includes at least two electrolytic cells 1 being connected with each other, and divides in each electrolytic cell 1
Anode electrode plate 2 and cathode electrode plate 3 are not provided with, and each anode electrode plate 2 is connected with the positive pole of power supply 4, each cathode electrode plate 3
Negative pole with power supply 4 is connected, and anode electrode plate 2 uses ti-based coating plate, cathode electrode plate 3 to use titanium plate.Multiple anode electrodes
Plate 2 is parallel to each other and is spaced apart with multiple cathode electrode plates 3；
(2) it is inner in electrocatalytic oxidation water treatment facilities (now water-quality COD cr is in the range of 800~1200mg/L), with arteries and veins
Power supply connection is rushed, is fully electrochemically reacted in the presence of the left battery lead plate 2 of anode with cathode electrode plate 3, process time is
10~20min；
(3) by the waste water immigration tank diameter after electrocatalytic oxidation water chemical treatment, flocculant stirring is added under stirring
Flocculation, sedimentation, filtering, 20~30min of process time；
(4) filtered fluid in step (3) is adjusted into pH value between 3~4, galvanic cell is carried out into micro-electrolysis reaction tower
Reaction is learned, reaction solution is moved into tank diameter, it is 9 that pH value is adjusted under stirring, stirring flocculation, sedimentation filtration, process time
60~90min；
(5) qualified discharge.
Above-mentioned plastic reclaimed waste water COD can stablize degraded in 1200mg/L or so, can be down to 50mg/L or so.So that modeling
The concentration clearance of material regenerative wastewater COD reaches discharging standards.
Embodiment 3
The method of present invention treatment organic wastewater with difficult degradation thereby, this embodiment is to Shandong Group Co., Ltd (existing five
Big industry, is respectively building energy conservation product, industrial phenolic aldehyde, founding materials, biomass energy and biomass chemical industry, food and doctor
Medicine) former treatment of Organic Wastewater, its water quality is as follows：
Above organic wastewater is not up to standard using biochemical treatment, the same electrochemical process two-stage advanced treating using embodiment 2,
Allow that above organic wastewater COD can stably be down to below 50mg/L.The clearance of the concentration of COD reaches country's discharge mark
It is accurate.
Embodiment 4
The method of present invention treatment organic wastewater with difficult degradation thereby, this embodiment is the treatment to slaughterhouse processing waste water：Contain
The macromoleculars such as exhibiting high surface activating agent, grease and protein, are a kind of high concentration hard-degraded organic waste waters, with concentration of suspension
High, colourity is big, easily smelly and the characteristics of severe contamination environment.Its waste water quality is COD：I600~2000mgL, colourity 140
Times, turbidity 180~200NTU, pH are 7 or so, are included the step of its treatment：
(1) pH value of waste water of discharge is 7 or so, and grid filtration removes non-liquid pollutant, makes waste water average, is directly entered
Electrocatalytic oxidation water treatment facilities, with reference to shown in Fig. 1, the device includes at least two electrolytic cells 1 being connected with each other, each electrolytic cell
Anode electrode plate 2 and cathode electrode plate 3 are respectively arranged with 1, each anode electrode plate 2 is connected with the positive pole of power supply 4, each negative electrode electricity
Pole plate 3 is connected with the negative pole of power supply 4, and anode electrode plate 2 uses ti-based coating plate, cathode electrode plate 3 to use titanium plate.Multiple anodes
Battery lead plate 2 is parallel to each other and is spaced apart with multiple cathode electrode plates 3；
(2) in electrocatalytic oxidation water treatment facilities, it is connected with the pulse power, in the left battery lead plate 2 of anode and cathode electrode
Fully it is electrochemically reacted in the presence of plate 3, the treatment residence time is 0.5h；
(3) by the waste water immigration tank diameter after electrocatalytic oxidation water chemical treatment, it is 8.5 that pH value is adjusted under stirring,
Flocculation, sedimentation, filtering, 20~30min of process time；
(4) filtered fluid in step (3) is adjusted into pH value between 3~4, galvanic cell is carried out into micro-electrolysis reaction tower
Reaction is learned, reaction solution is moved into tank diameter, it is 9 that pH value is adjusted under stirring, stirring flocculation, sedimentation, filtering, process time
It is 30~40min；
(5) micro-electrolysis reaction tower is produced into the filtered fluid after discharge treatment, adds catalyst and stabilization pH value is 3, added
Hydrogen peroxide, removes the remaining COD of final residual, and chemically react 1h；
(6) the complex reaction liquid regulation pH value for excluding is 8.5, sedimentation filtration, qualified discharge.
Embodiment 5
Using conventional biological treatment more than current most of Treatment of Coking Effluent, water outlet CODcr after being processed through the method,
NH3- N concentration is difficult to reach industry first discharge standard, and this technology is using electrochemical process to the coking chemical waste water after Biochemical method
Carry out advanced treating.
The pH value of coking chemical waste water water inlet is 8.0 or so, and influent COD cr concentration is 239.3mg/L, NH3- N about 29mg/L.
When current density i is 110A/m2, pH value is 8.0 or so, and with the extension of cell reaction time, removal coking is given up
The COD of water has obvious effect, NH3- N and colourity are little with time lengthening change, NH3- N is basically stable at more than 50%.
Can be realized satisfactory results using more than galvanic cell electrolysis Treatment of Wastewater in Coking three indexs, particularly colourity
100% removal, COD removals are down to 47mg/L, NH from about 239mg/L during the full PROCESS FOR TREATMENT coking chemical waste water of combination3-
N removals about 29mg/L is down to 12mg/L, and wherein light electrolysis decolorizing effect is splendid.
By above case, using two-stage electrochemical reactor or combine other water treatment technologies and combine and processed.Respectively
Individual cell process is complementary, maximize favourable factors and minimize unfavourable ones, play respective advantage, accomplishes rational technology, can accomplish COD qualified discharges or reclaimed water
Reuse, operating cost is reasonable.
Using electrocatalytic oxidation water treatment facilities, it is used as anode by using ti-based coating electrode, and its material is generally all
With relatively low overpotential for oxygen evolution, oxidability is strong, and corrosion resistance is good, good conductivity, can be by features such as high currents；Made with titanium plate
Negative electrode, electro-deposition heavy metal.Electric power system innovates connection using unit-combination type.Its mechanism is in water using ti-based coating electrode
With electro catalytic activity higher when being electrolysed in solution, in addition using high-voltage pulse power source " power supply-have a power failure-power supply " circular flow
Equipment, constantly from the outside O for providing2Trapping external electric field provides electronics, forms oxygen radical ion O2 -, eventually pass a series of
Reaction generation H2O2, the extremely strong oxidants of hydroxyl radical free radical ion OH are then resolved into, destruction organic matter (COD) generates powered
Lotus organic " fragment " or mineralising and the removal that is degraded；
R+·OH→R·+H2O；
R·+M3+→M2++R+；
R++O2→ROO-→…→CO2+H2O；
Annotation：R represents organic matter (COD), and M represents catalyst metal atom.
Why high the removal effect of the pollutant in Electro-catalytic Oxidation Process water is, its main cause：Electrocatalytic oxidation
The change of energy is not substantially that the external conditions such as voltage, electric current cause, but electrode material influence in itself.It is dirty for difficult degradation
The electrochemical treatments of thing are contaminated, design and the preparation of most important electrode material, different electrode material correspond to pollutant different
Conversion results and transformation mechanism.
Complicated component, strong toxicity, biodegradability are had according to the Industry Waste water pollutant that every profession and trade industrial production is discharged
The feature such as difference, the pollutant load that has are high, have pollutant low content but extremely difficult degraded.By electrochemical water treatment technology, general
Together with the solid waste from water treatment such as logical chemical oxidation water technology, coagulation and filtration sedimentation and membrane bioreactor, association
Process combination treatment or advanced treating are carried out with the sewage produced to manufacturing enterprise.Industrial applications are easy to implement, after treatment
Trade effluent returns to the technological process of production and is used as recycled water or qualified discharge.
Electro-chemical water processing equipment is dirty primarily directed to the industry that the enterprise of the pollutant of those high-concentration hardly-degradables produces
Water.Before electro-chemical water processing equipment can be according to the degree of the main technique difficulty or ease of sewage disposal or the main technique of arrangement, or it is arranged in main work
After skill, or individually PROCESS FOR TREATMENT need to be because of sewage property depending on.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the scope of the present invention
It is defined, on the premise of design spirit of the present invention is not departed from, this area ordinary skill technical staff is to technology of the invention
Various modifications and improvement that scheme is made, all should fall into the protection domain of claims of the present invention determination.
Claims (6)
1. a kind of electrocatalytic oxidation water treatment facilities, it is characterised in that including at least two electrolytic cells being connected with each other, it is each described
Anode electrode plate and cathode electrode plate are respectively arranged with electrolytic cell, each anode electrode plate is connected with the positive pole of power supply, respectively
The cathode electrode plate is connected with the negative pole of power supply, and the anode electrode plate uses ti-based coating plate, the cathode electrode plate to adopt
Use titanium plate.
2. electrocatalytic oxidation water treatment facilities according to claim 1, it is characterised in that multiple anode electrode plates with
Multiple cathode electrode plates are parallel to each other and are spaced apart.
3. it is a kind of process organic wastewater with difficult degradation thereby method, it is characterised in that comprise the following steps：
(1) pending organic wastewater filtered, make waste water average, the electrocatalytic oxidation water chemical treatment described in claim 1 or 2
Device；
(2) it is connected with the pulse power in the electrocatalytic oxidation water treatment facilities, makes organic wastewater in the anode electrode plate
Fully it is electrochemically reacted with cathode electrode plate effect.
4. it is according to claim 3 treatment organic wastewater with difficult degradation thereby method, it is characterised in that also including step：
(3) by the organic wastewater immigration tank diameter after step (2) electrocatalytic oxidation water chemical treatment, flocculation is added under stirring
Agent stirring flocculation, sedimentation, filtering；
(4) pH value of filtered fluid is adjusted, make the organic wastewater for the treatment of carries out galvanic cell chemical reaction into micro-electrolysis reaction tower, instead
Answer in liquid immigration tank diameter, it is 9 that pH value is adjusted under stirring, stirring is flocculated, settles, filtering；
(5) qualified discharge.
5. it is according to claim 4 treatment organic wastewater with difficult degradation thereby method, it is characterised in that the step (4) and (5)
Between also include step：
Filtered fluid after the chemical reaction discharge treatment of micro-electrolysis reaction tower, regulation pH value, addition ferrous sulfate and stable regulation
After pH value carries out complex reaction, downward ph adjustment adds hydrogen peroxide, removes the material and remaining COD of final residual；
The complex reaction liquid regulation pH value of exclusion is 8.5, sedimentation filtration.
6. it is according to claim 4 treatment organic wastewater with difficult degradation thereby method, it is characterised in that the step (4) and (5)
Between also include step：
Micro-electrolysis reaction tower produces the filtered fluid after discharge treatment, adds catalyst and stabilization pH value, adds hydrogen peroxide, removes most
After remain remaining COD；
The complex reaction liquid regulation pH value of exclusion is 8.5, sedimentation filtration.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105293790A (en) * | 2015-12-01 | 2016-02-03 | 安洁士环保（上海）股份有限公司 | Comprehensive treatment method for oily sewage in oil field |
| CN205347056U (en) * | 2016-01-13 | 2016-06-29 | 江苏瑞达环保科技有限公司 | Preprocessing device of chloride waste water |
| CN205442734U (en) * | 2015-12-28 | 2016-08-10 | 北京帝力伟业科技开发有限公司 | Electric catalytic oxidation reaction unit of many reactions |
| CN205873976U (en) * | 2015-12-28 | 2017-01-11 | 北京师范大学 | Electric catalytic oxidation reaction unit who contains many react unit |
-
2017
- 2017-05-02 CN CN201710299818.1A patent/CN106927544A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105293790A (en) * | 2015-12-01 | 2016-02-03 | 安洁士环保（上海）股份有限公司 | Comprehensive treatment method for oily sewage in oil field |
| CN205442734U (en) * | 2015-12-28 | 2016-08-10 | 北京帝力伟业科技开发有限公司 | Electric catalytic oxidation reaction unit of many reactions |
| CN205873976U (en) * | 2015-12-28 | 2017-01-11 | 北京师范大学 | Electric catalytic oxidation reaction unit who contains many react unit |
| CN205347056U (en) * | 2016-01-13 | 2016-06-29 | 江苏瑞达环保科技有限公司 | Preprocessing device of chloride waste water |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107416962A (en) * | 2017-07-12 | 2017-12-01 | 连云港亿尚景水务有限公司 | A kind of advanced oxidation equipment and sewage disposal system |
| CN107973457A (en) * | 2017-12-15 | 2018-05-01 | 西安泰金工业电化学技术有限公司 | A kind of processing unit and method of electrocatalytic oxidation used water difficult to degradate |
| CN108178252A (en) * | 2018-01-22 | 2018-06-19 | 浙江工业大学 | A kind of four electrodes pair electrolysis system and use system processing organic wastewater with difficult degradation thereby method |
| CN108178252B (en) * | 2018-01-22 | 2024-03-22 | 浙江工业大学 | Four-electrode double-electrolysis system and method for treating refractory organic wastewater by adopting same |
| CN109052581B (en) * | 2018-09-29 | 2024-02-02 | 四川捷途环保服务有限公司 | Graphene-based small-drainage-basin electrocatalytic degradation system |
| CN109052581A (en) * | 2018-09-29 | 2018-12-21 | 四川捷途环保服务有限公司 | A kind of small watershed Electrocatalysis Degradation system based on graphene |
| CN109550771A (en) * | 2018-12-11 | 2019-04-02 | 中化环境控股有限公司 | The minimizing technology and removal device of organic pollutant in industrial waste salt |
| CN109550771B (en) * | 2018-12-11 | 2024-04-26 | 中化环境控股有限公司 | Method and device for removing organic pollutants in industrial waste salt |
| CN111533368A (en) * | 2020-04-17 | 2020-08-14 | 苏州庚泽新材料科技有限公司 | Method for treating sewage |
| CN111995040A (en) * | 2020-08-14 | 2020-11-27 | 武汉轻工大学 | High-concentration nonbiodegradable organic wastewater treatment equipment and method |
| CN111995040B (en) * | 2020-08-14 | 2022-06-03 | 武汉轻工大学 | High-concentration nonbiodegradable organic wastewater treatment equipment and method |
| CN112047539A (en) * | 2020-09-07 | 2020-12-08 | 昆山美淼环保科技有限公司 | Sewage treatment method |
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