CN202440349U - Equipment for treating organic wastewater by electrolysis-oxidant combination - Google Patents
Equipment for treating organic wastewater by electrolysis-oxidant combination Download PDFInfo
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- CN202440349U CN202440349U CN2011204811892U CN201120481189U CN202440349U CN 202440349 U CN202440349 U CN 202440349U CN 2011204811892 U CN2011204811892 U CN 2011204811892U CN 201120481189 U CN201120481189 U CN 201120481189U CN 202440349 U CN202440349 U CN 202440349U
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Abstract
The utility model discloses equipment for treating organic wastewater by electrolysis-oxidant combination, which consists of an electrolytic cell, a circulating system and a storage tank, wherein the storage tank is provided with a water inlet and a water outlet; one end of the electrolytic cell is connected with the storage tank through the circulating system, and the other end of the electrolytic cell is directly connected with the storage tank; and the circulating system comprises a circulating pump and a pipeline. The equipment disclosed by the utility model is characterized in that the electrolytic cell is internally added with an oxidant and provided with an electrode, and the electrode is connected with direct current; when the equipment operates, the wastewater first enters the storage tank, passes through the circulating pump, flows into the electrolytic cell from one end of the electrolytic cell and is connected with the current and subjected to electrolysis and oxygenolysis reaction in the electrolytic cell, and the wastewater passing through the electrolytic cell flows out of the other end of the electrolytic cell and returns to the storage tank; and the technological process is repeated till organic materials in the wastewater are degraded into the required level.
Description
Technical field
The utility model belongs to the environmental protection field, is specifically related to a kind of electrolytic oxidation intensifying device that is used for wastewater treatment.
Background technology
China is the big producing country of industries such as chemical industry, food, papermaking, process hides, plating, and every day is discharged a large amount of organic waste waters by various manufacturing enterprises.The organic pollutant that particularly contains a large amount of poisonous and difficult for biological degradation in the sewage of food service industry (food, brewage, refine sugar), light industry (leather, papermaking), textile industry (weaving, printing and dyeing), petroleum chemical industry dischargings such as (petroleum refining, fine chemistry industry, medicine, agricultural chemicals); Because variety, complicacy and the refractory organics of its composition, traditional water treatment technology all are difficult to handle.Though methods such as the membrane separation technique of development in recent years, ozone oxidation and photochemical catalytic oxidation can be handled the organic waste water of poisonous and difficult for biological degradation within the specific limits, it is costly, and the scope of application is also limited.
During the electrochemical process degrading organic contaminant in wastewater; Produce a large amount of hydroxyl radical free radicals; And then utilizing the strong oxidation of hydroxyl radical free radical that pollutants in waste water is degraded, it can make the organism of bio-refractory be converted into the organism of bio-degradable, or the generation CO that directly burns
2And H
2O has good degradation effect, is a kind of treatment process of cleaning, compares with other water technologies, and this technology has advantages such as equipment is simple, process range is wide, sludge quantity is few, suitable robotization control.But because the common electrolyzer overcurrent time is short, can not brings into play the oxygenizement of hydroxyl radical free radical fully, and cause spatiotemporal efficiency low, the water outlet effect is undesirable.Prolong runner and can increase cost again, cause unnecessary investment waste; Simultaneously simple electrolysis produces hydroxyl radical free radical, though ability exhaustive oxidation degradation of organic substances is when the water yield is big, consuming time longer.
The utility model content
The purpose of the utility model provides the equipment of a kind of electrolysis-oxygenant combination treatment organic waste water, with the organism in the exhaustive oxidation degrading waste water, avoids the low problem of spatiotemporal efficiency of common electrolyzer, realizes obviously improving oxidative degradation speed simultaneously.
The utility model is realized above-mentioned purpose through following technical scheme:
The equipment of a kind of electrolysis-oxygenant combination treatment organic waste water; Be made up of electrolyzer, the recycle system and hold-up vessel, establish water-in and water port on the hold-up vessel, electrolyzer one end links to each other with hold-up vessel through the recycle system; The other end directly links to each other with hold-up vessel; The recycle system comprises recycle pump and pipeline, adds oxygenant in the electrolyzer and is provided with electrode, and electrode connects direct current; Waste water at first gets into hold-up vessel during operation, flows into electrolyzer through recycle pump from electrolyzer one end then, and electrolysis and oxidative decomposition take place in electrolyzer making current, and the waste water that flows through electrolyzer flows out from the electrolyzer the other end, is back to hold-up vessel; Repeat above-mentioned flow process, organic matter degradation is to the level that requires in waste water.
The electrode of the utility model can adopt graphite, platinum etc., perhaps combined electrodes such as silicon, tantalum, titanium, diamond, boron.Galvanic voltage is the 1-50 volt, and electric current is the 1-25 ampere.The contriver finds through test of many times, is BBD electrode when carrying out oxidation-electrolytic reaction with the boron-doped diamond film electrode, compares other electrodes and can obtain better effect, and best results is set time at 12 volts voltage.Therefore, selecting the voltage of suitable electrode and control the utility model, also is a key of the utility model, and this system is able in save energy and control by product, and the pollutent in the degrading waste water reduces COD effectively.In conjunction with the repeatedly result of the utility model various wastewater, preferred voltage is 12 volts in this system, and electrode is the boron-doped diamond film electrode.
Electrode is installed on the battery lead plate, can place many counter electrode plate in the electrolyzer, and the battery lead plate total area is 1:20-1:50 with the ratio of electrolyzer TV.
The preferred oxygenant of the utility model is a kind of or its arbitrary combination in ydrogen peroxide 50, hypochlorous acid or hypochlorite, perchloric acid, the potassium permanganate, and concentration is 0.05 ~ 0.5 mol/L.Wherein highly preferred oxygenant is hypochlorous acid or hypochlorite, and preferred concentrations is 0.1mol/L.The contriver finds through test of many times; In the oxidation-electrolytic system of the utility model; Adopt hypochlorous acid or the hypochlorite of 0.1mol/L can promote the degraded of pollutent in the waste water effectively, and improve hypochlorite concentration on this basis again, degradation rate and efficient are not significantly improved; Can cause too high in salinity in the solution on the contrary, be unfavorable for subsequent disposal.
The residence time of waste water in electrolyzer is 3-6 hour during the equipment operation, and the flow of waste water is 1L/min.
Electrolyzer volume and hold-up vessel volumetric ratio are 1:50～1:5000; Device interior adopts anticorrosive; Can also be provided with whipping device in the electrolyzer, or be provided with dividing plate,, avoid short stream with the adjustment current.
It is the organic waste water of 2000 ~ 4000mg/L that the equipment of the electrolysis of the utility model-oxygenant combination treatment organic waste water especially is fit to handle COD.
Compared with prior art, the utlity model has following beneficial effect:
1. the utility model adopts water tank water storage mode, realizes the preface batch processing of big yield organic waste water, effectively reduces the electrolyzer volume, saves electrode.
2. the utility model is realized the high spatiotemporal efficiency that wastewater electrolytic is handled through circulating processing.
3. can add one or more oxygenants (ydrogen peroxide 50, hypochlorous acid, perchloric acid, potassium permanganate), utilize synergistic effect effectively to improve degradation rate.
4. can connect biochemistry pool after the electrolytic reaction, hardly degraded organic substance resolves into behind electrolytic oxidation and is prone to the biochemical degradation organism, behind the entering biochemistry pool, can effectively improve biochemical treatment efficient.
Description of drawings
Fig. 1 is the utility model device synoptic diagram.
Embodiment
Embodiment 1
The structure of equipment and operation.The equipment of electrolysis as shown in Figure 1-oxygenant combination treatment organic waste water is made up of electrolyzer 1, the recycle system 2 and hold-up vessel 3, establishes water-in and water port on the hold-up vessel 3; Electrolyzer 1 one ends link to each other with hold-up vessel 3 through the recycle system 2, and the other end directly links to each other with hold-up vessel 3, and the recycle system 2 comprises recycle pump and pipeline; The hypochlorous acid that adds 0.1mol/L in the electrolyzer 1 is made oxygenant and is provided with the BDD electrode; Electrode connects direct current, voltage 12.0V, electric current 4.0A.Waste water at first gets into hold-up vessel 3 during operation; Flow into electrolyzer 1 through recycle pump from electrolyzer 1 one ends then, electrolysis and oxidative decomposition take place in making current in electrolyzer 1; The waste water that flows through electrolyzer 1 flows out from electrolyzer 1 the other end, is back to hold-up vessel 3; Repeat above-mentioned flow process, organic matter degradation is to the level that requires in waste water.
Embodiment 2
Utilize the equipment of embodiment 1 and adopt the BDD electrode and hypochlorous acid co-oxidation degraded percolate.Percolate COD reaches 3480mg/L, and ammonia nitrogen concentration reaches 4000mg/L, at voltage 12.0V, under the electric current 4.0A condition; Adding concentration is the hypochlorous acid of 0.1mol/L, electrolysis 5 hours, and COD reduces to 85mg/L; Ammonia nitrogen is reduced to 50 mg/L, and degradation effect is remarkable, and has good decolorizing effect.COD and ammonia nitrogen all do not have obvious decline when only adding hypochlorous acid.And when adopting electrolysis and hypochlorous acid combination treatment, the degradation speed of COD and ammonia nitrogen is fast about 1.5 times.
Embodiment 3
Utilize the equipment of embodiment 1 and adopt the BDD electrode and hypochlorous acid electrolysis phenolic waste water.Phenolic waste water COD=2240mg/L at impressed voltage 12.0V, continues electrolysis under the electric current 4.0A condition, adding concentration is the hypochlorous acid of 0.1mol/L, reduces to 35mg/L through 5 hours electrolysis COD.Adding hypochlorous acid does not merely have degraded, and when electrolysis and hypochlorous acid combination treatment, speed obviously improves, than fast nearly 2 times of simple electrolysis and degradation speed.
Embodiment 4
Utilize the equipment of embodiment 1 and adopt the BDD electrode and Youxiaolin metallide waste water.Under voltage 50V, electric current 25A condition, adding concentration is the Youxiaolin of 0.1mol/L, and through 5 hours, COD reduced to 660mg/L from 3885mg/L, and ammonia nitrogen is reduced to 225mg/L from 10856mg/L.Than Graphite Electrodes, PbO
2Degradation speed fast 60% when electrode is made positive pole; There is not degraded and add hypochlorite merely, than fast about 1.8 times of simple use BDD electrode degrading speed.
Claims (2)
1. the equipment of electrolysis-oxygenant combination treatment organic waste water; Form by electrolyzer, the recycle system and hold-up vessel; Establish water-in and water port on the hold-up vessel, electrolyzer one end links to each other with hold-up vessel through the recycle system, and the other end directly links to each other with hold-up vessel; The recycle system comprises recycle pump and pipeline, it is characterized in that adding oxygenant in the electrolyzer and being provided with electrode.
2. the equipment of electrolysis as claimed in claim 1-oxygenant combination treatment organic waste water is characterized in that said electrode is the boron-doped diamond film electrode.
The equipment of 3, electrolysis as claimed in claim 1-oxygenant combination treatment organic waste water is characterized in that said electrode connects direct current, and galvanic voltage is the 1-50 volt, and electric current is the 1-25 ampere.
The equipment of 4, electrolysis as claimed in claim 1-oxygenant combination treatment organic waste water is characterized in that said electrode is installed on the battery lead plate, can place many counter electrode plate in the electrolyzer, and the battery lead plate total area is 1:20-1:50 with the ratio of electrolyzer TV.
The equipment of 5, electrolysis as claimed in claim 1-oxygenant combination treatment organic waste water is characterized in that oxygenant in the electrolyzer is a kind of in ydrogen peroxide 50, hypochlorous acid or hypochlorite, perchloric acid, the potassium permanganate.
The equipment of 6, electrolysis as claimed in claim 1-oxygenant combination treatment organic waste water is characterized in that electrolyzer volume and hold-up vessel volumetric ratio are 1:50～1:5000.
The equipment of 7, electrolysis as claimed in claim 1-oxygenant combination treatment organic waste water is characterized in that also being provided with whipping device in the electrolyzer, or is provided with dividing plate, with the adjustment current, avoids short stream.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204811892U CN202440349U (en) | 2011-11-28 | 2011-11-28 | Equipment for treating organic wastewater by electrolysis-oxidant combination |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204811892U CN202440349U (en) | 2011-11-28 | 2011-11-28 | Equipment for treating organic wastewater by electrolysis-oxidant combination |
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| CN202440349U true CN202440349U (en) | 2012-09-19 |
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| CN2011204811892U Expired - Fee Related CN202440349U (en) | 2011-11-28 | 2011-11-28 | Equipment for treating organic wastewater by electrolysis-oxidant combination |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105600880A (en) * | 2016-02-02 | 2016-05-25 | 南京理工大学 | Advanced treatment device for nitrogen-containing heterocyclic ring compound chemical tail water and combination technology thereof |
| CN106006850A (en) * | 2016-05-25 | 2016-10-12 | 安徽普氏生态环境工程有限公司 | Method for performing electrochemical oxidative degradation on sewage COD (chemical oxygen demand) by using boron-doped graphene electrode |
| CN106830204A (en) * | 2017-03-13 | 2017-06-13 | 重庆大学 | A kind of electrochemical cathode excites the method and device of permanganate degraded water pollutant |
| CN110937665A (en) * | 2019-12-09 | 2020-03-31 | 广州新奥环境技术有限公司 | Treatment device for degrading ammonia nitrogen in sewage |
-
2011
- 2011-11-28 CN CN2011204811892U patent/CN202440349U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105600880A (en) * | 2016-02-02 | 2016-05-25 | 南京理工大学 | Advanced treatment device for nitrogen-containing heterocyclic ring compound chemical tail water and combination technology thereof |
| CN106006850A (en) * | 2016-05-25 | 2016-10-12 | 安徽普氏生态环境工程有限公司 | Method for performing electrochemical oxidative degradation on sewage COD (chemical oxygen demand) by using boron-doped graphene electrode |
| CN106830204A (en) * | 2017-03-13 | 2017-06-13 | 重庆大学 | A kind of electrochemical cathode excites the method and device of permanganate degraded water pollutant |
| CN106830204B (en) * | 2017-03-13 | 2020-04-28 | 重庆大学 | Method and device for degrading pollutants in water by exciting permanganate through electrochemical cathode |
| CN110937665A (en) * | 2019-12-09 | 2020-03-31 | 广州新奥环境技术有限公司 | Treatment device for degrading ammonia nitrogen in sewage |
| CN110937665B (en) * | 2019-12-09 | 2024-07-09 | 广州新奥环境技术有限公司 | Treatment device for degrading ammonia nitrogen in sewage |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20151128 |