CN101759249B - Treating method and device of ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater - Google Patents
Treating method and device of ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater Download PDFInfo
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- CN101759249B CN101759249B CN2010100172264A CN201010017226A CN101759249B CN 101759249 B CN101759249 B CN 101759249B CN 2010100172264 A CN2010100172264 A CN 2010100172264A CN 201010017226 A CN201010017226 A CN 201010017226A CN 101759249 B CN101759249 B CN 101759249B
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Abstract
The invention discloses ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater treating method and device. In the method, the phosphorus-contained wastewater of a wastewater storing tank is conveyed into a reaction tank; a power supply supplies power for a positive electrode and a negative electrode in an electrode unit, and the positive electrode generates a metal ion; and an ultrasonic wave generated by an ultrasonic generator directly acts on the phosphorus-contained wastewater in the reaction tank by the wall vibration of the reaction tank and is matched with the high-valence state metal ion to realize the coagulated purification of the phosphorus-contained wastewater. The device comprises the ultrasonic generator, the reaction tank, the power supply, the wastewater storing tank, a water discharge container, a flowmeter and a circulating pump. The invention has high reaction speed, high processing efficiency and low energy consumption.
Description
Technical field
The present invention relates to a kind of method and device of ultrasonic coupling electrochemical coagulation Removal of Phosphorus in Wastewater.Through design flow dynamic formula reaction unit, utilize ultrasonic assisted electrochemical coagulation device, can obviously improve the processing speed of phosphorus-containing wastewater.
Background technology
A large amount of dischargings of phosphorus-containing wastewater cause body eutrophication, destroy the eubiosis of water body, and quality of water environment is worsened, and have a strong impact on people's problem of water consumption, also can make water surrounding lose recreational value.The average content of phosphorus is respectively 0.02mg/L and 0.088mg/L in fresh water and seawater.At present, the municipal effluent water displacement increases sharply, and year increases water displacement up to 2,400,000,000 m
3, the concentration of phosphorus is about 10～20mg/L in the municipal effluent.Water body was regarded as eutrophication when total phosphorous was greater than 0.02mg/L usually.Therefore, the processing of phosphorus is very important in the waste water.
The method of dephosphorization at present mainly contains physicochemical treatment method and biological treatment.Physico-chemical process is generally to use during engineering is handled like absorption and chemical precipitation method, but the required added amount of chemical of this method is big, and equipment and running cost are high, and it is big to produce sludge quantity, and inorganic anion is prone to cause secondary pollution, and its application receives certain limitation.Need in the biological process dephosphorization process that liquid phosphorus is transferred to sludge phase and handle, and processing efficiency generally is lower than 30%, fluctuation of service, the operation strictness receives the influence of temperature and the potential of hydrogen of waste water etc.So be necessary to develop efficient feasible phosphorus removing method.
Electrochemical coagulation (cohesion) technology is emerging in recent years water technology, because this technical finesse waste water efficient is high, it is wide, simple to operate to remove the pollutent scope, and processing cost is low, becomes the research focus of domestic and international water technology.The research major side of at present relevant electrochemical coagulation dephosphorization technique overweights investigates the influence of each influence factor to dephosphorization efficiency by using, and this technology is optimized.In electrochemical coagulation dephosphorization process, reducing energy consumption, raising current efficiency and electrode passivation phenomenon is the subject matter that needs solution in this process application.
Ultrasonic-electrocatalysis is branch's content at ultrasonic electrochemical, is the new technology that UW is combined with electrocatalysis.In recent years, the ultrasonic electrochemical researchdevelopment is very fast, is one of sonochemistry and electrochemical forward position research field.Nineteen ninety; T.J.Mason etc. have at first proposed the notion of ultrasonic electrochemical; After this, ultrasonic electrochemical is flourish as one of electrochemistry and sonochemistry new branch, has been widely used in research fields such as plating and galvanic deposit, organic synthesis, material prepn, electroanalytical chemistry so far.The research that ultrasonic electrochemical is applied to treatment of Phosphorus Containing Waste Water also seldom, the processing that ultrasonic-electrochemical coagulation method is applied to phosphorus-containing wastewater does not also appear in the newspapers.
Because physics and chemical effect that ultrasonic assisted electrochemical coagulation produces, thus ultrasonic and electrochemical coagulation combine have many potential advantages, these advantages comprise cleaning and the degasification of electrode surface, the depassivation of electrode surface, the erosion of electrode surface; Quicken the transmission of liquid phase quality; Accelerate speed of reaction; Improve degradation efficiency etc.
Summary of the invention
The present invention seeks to provides a kind of ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater treating method and device to the defective that prior art exists.
The present invention adopts following technical scheme for realizing above-mentioned purpose:
Ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater treating method of the present invention is characterized in that said method is following:
Waste water tank is imported phosphorus-containing wastewater in the reactive tank; Power supply is given anode, the negative electrode power supply in the electrode unit, and anode produces high valence state metals ion; The UW that ultra-sonic generator produces directly acts on the phosphorus-containing wastewater in the reactive tank through the wall vibration of reactive tank, cooperates said high valence state metals ion to realize that coagulation purifies phosphorus-containing wastewater.
Described ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater treating method, the UW power input that it is characterized in that said ultra-sonic generator is at 50～100W, and ultrasonic frequency is at 50kHz～100kHz.
Described ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater treating method, the operating operation voltage that it is characterized in that said power supply are at 3V～15V, and corresponding electric current is 0.1～2.4A/cm
2
Described ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater treating method is characterized in that said reactive tank contains ionogen Na
2SO
4Concentration be 0.1mmol/L～10mmol/L.
The treatment unit of described ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater treating method; It is characterized in that comprising ultra-sonic generator, waste water tank, power supply, header tank, water exit container, under meter and recycle pump; Wherein be connected with the water inlet of reactive tank behind the water outlet of the waste water tank serial connection under meter; Pick out the water inlet of water receptacle and waste water tank behind the water outlet serial connection recycle pump of reactive tank respectively, numerous the electrode units that structure is identical are set in the reactive tank, each electrode supply comprises that all the first anode electrode, cathode electrode, the second anode electrode that are arranged in order constitute; Two anode electrodes connect the positive pole of power supply, and cathode electrode connects the negative electrode of power supply; Ultra-sonic generator be arranged at reactive tank the bottom, be affixed on the wall of reactive tank, the UW that ultra-sonic generator produces is without coupling liquid, but directly acts on the phosphorus-containing wastewater in the reactive tank through the wall vibration of reactive tank.
Described ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater treatment equipment is characterized in that the water outlet of said reactive tank and water inlet respectively are provided with a baffle plate.
Described ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater treatment equipment; It is characterized in that said anode electrode adopts netted iron or reticulated aluminum or netted iron, aluminium, titanium composite anode; Said cathode electrode adopts the copper mesh negative electrode, and the spacing of cathode electrode and anode electrode is 5mm～35mm.
The present invention adopts meshed anode; Copper mesh negative electrode, polar plate spacing are divided into inhalant region, reaction zone and exhalant region three parts through dividing plate with reactor drum at 5mm～35mm; Also can guarantee simultaneously the waste water electrode surface of flowing through fully; Through deriving reaction product, carry out to the direction that generates product thereby change the chemical equilibrium driving a reaction, improve speed of response.Ultra-sonic generator directly acts on reactor wall in addition, and UW is without coupling liquid, but directly acts on reaction solution through the wall vibration, has improved the utilization ratio of acoustic energy, also strengthens the collaborative coupling of UW and electrochemical coagulation (cohesion) simultaneously.
For the processing of phosphorus-containing wastewater, UW assisted electrochemical coagulation (cohesion) technology is compared with independent electrochemical coagulation (cohesion), and speed of response improves 5～10 times, and processing efficiency improves more than 5 times, and energy consumption has reduced by 1～2 times.
Description of drawings
Fig. 1: structure iron of the present invention.
The legend explanation:
The A water inlet, B baffle plate, C anode, D negative electrode, E water outlet, (1) ultra-sonic generator, (2) reactive tank, (3) power supply, (4) waste water tank, (5) water exit container, (6) under meter, (7) recycle pump
Embodiment
Below in conjunction with embodiment the present invention is made further detailed description:
Ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater treating method is characterized in that said method is following:
Described ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater treating method, the UW power input that it is characterized in that said ultra-sonic generator 1 is at 50～100W, and ultrasonic frequency is at 50kHz～100kHz.
Described ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater treating method, the operating operation voltage that it is characterized in that said power supply 3 are at 3V～15V, and corresponding electric current is 0.1～2.4A/cm
2
Described ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater treating method is characterized in that said reactive tank 2 contains ionogen Na
2SO
4Concentration be 0.1mmol/L～10mmol/L.
As shown in Figure 1.The treatment unit of described ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater treating method; It is characterized in that comprising ultra-sonic generator 1, reactive tank 2, power supply 3, waste water tank 4, water exit container 5, under meter 6 and recycle pump 7; Wherein the water outlet of waste water tank 4 serial connection under meter 6 backs are connected with the water inlet of reactive tank 2; Pick out the water inlet of water receptacle 5 and waste water tank 4 behind the water outlet serial connection recycle pump 7 of reactive tank 2 respectively; Numerous the electrode units that structure is identical are set in the reactive tank 2; Each electrode supply comprises that all the first anode electrode, cathode electrode, the second anode electrode that are arranged in order constitute, and two anode electrodes connect the positive pole of power supply 3, and cathode electrode connects the negative electrode of power supply 3; Ultra-sonic generator 1 be arranged at reactive tank 2 the bottom, be affixed on the wall of reactive tank 2, the UW that ultra-sonic generator 1 produces is without coupling liquid, but directly acts on the phosphorus-containing wastewater in the reactive tank 2 through the wall vibration of reactive tank 2.
Described ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater treatment equipment is characterized in that the water outlet of said reactive tank 2 and water inlet respectively are provided with a baffle plate B.
Described ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater treatment equipment is characterized in that said anode electrode adopts netted iron or aluminium or titanium composite anode, and said cathode electrode adopts the copper mesh negative electrode, and the spacing of cathode electrode and anode electrode is 5mm～35mm.
Specific embodiment is following:
Embodiment 1: the preparation total phosphorus is the 50mg/L simulated wastewater, in apparatus of the present invention, handles.Concrete operations parameter and treatment effect are following:
Operating parameters:
UW power input: 100W;
Ultrasonic frequency: 80kHz;
The operating operation voltage of direct supply: 8V;
Supporting electrolyte Na
2SO
4Concentration: 5mmol/L;
Corresponding electric current: 0.4A/cm
2
Polar plate spacing: 10mm;
Treatment time: 6min.
Embodiment 2: the preparation total phosphorus is the 10mg/L simulated wastewater, in apparatus of the present invention, handles.Concrete operations parameter and treatment effect are tabulated as follows:
Operating parameters:
UW power input: 100W;
Ultrasonic frequency: 80kHz;
The operating operation voltage of direct supply: 8V;
Supporting electrolyte Na
2SO
4Concentration: 5mmol/L;
Corresponding current density: 0.4A/cm
2
Polar plate spacing: 20mm;
Treatment time: 6min.
Embodiment 3: the preparation total phosphorus is the 100mg/L simulated wastewater, in apparatus of the present invention, handles.Do not start circulation device, 60min opens UW before the reaction, closes UW behind the 60min and carries out independent electrochemical degradation, and sampling detects behind the 30min.Concrete test operation parameter and treatment effect data list are following:
Operating parameters:
UW power input: 100W;
Ultrasonic frequency: 80kHz;
The operating operation voltage of direct supply: 15V;
Supporting electrolyte Na
2SO
4Concentration: 5mmol/L;
Corresponding electric current 0.4A/cm
2
Polar plate spacing: 10mm.
Claims (3)
1. the treatment unit of a using ultrasound coupling electrochemical coagulation phosphorus-contained wastewater treating method; It is characterized in that comprising ultra-sonic generator (1), reactive tank (2), power supply (3), waste water tank (4), water exit container (5), under meter (6) and recycle pump (7); Wherein the water outlet of waste water tank (4) serial connection under meter (6) back is connected with the water inlet of reactive tank (2); Pick out the water inlet of water receptacle (5) and waste water tank (4) behind the water outlet serial connection recycle pump (7) of reactive tank (2) respectively; Numerous the electrode units that structure is identical are set in the reactive tank (2); Each electrode supply comprises that all the first anode electrode, cathode electrode, the second anode electrode that are arranged in order constitute, and two anode electrodes connect the positive pole of power supply (3), and cathode electrode connects the negative electrode of power supply (3); Ultra-sonic generator (1) be arranged at reactive tank (2) the bottom, be affixed on the wall of reactive tank (2), the UW that ultra-sonic generator (1) produces is without coupling liquid, but directly acts on the interior phosphorus-containing wastewater of reactive tank (2) through the wall vibration of reactive tank (2); Waste water tank (4) is imported phosphorus-containing wastewater in the reactive tank (2); Power supply (3) is given anode, the negative electrode power supply in the electrode unit, and anode produces metals ion; The UW that ultra-sonic generator (1) produces directly acts on the phosphorus-containing wastewater in the reactive tank (2) through the wall vibration of reactive tank (2), cooperates said high valence state metals ion to realize that coagulation purifies phosphorus-containing wastewater.
2. ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater treatment equipment according to claim 1 is characterized in that the water outlet of said reactive tank (2) and water inlet respectively are provided with a baffle plate (B).
3. ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater treatment equipment according to claim 1; It is characterized in that said anode electrode adopts netted iron or reticulated aluminum or netted iron, aluminium, titanium composite anode; Said cathode electrode adopts the copper mesh negative electrode, and the spacing of cathode electrode and anode electrode is 5mm～35mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010100172264A CN101759249B (en) | 2010-01-05 | 2010-01-05 | Treating method and device of ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater |
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|---|---|---|---|
| CN2010100172264A CN101759249B (en) | 2010-01-05 | 2010-01-05 | Treating method and device of ultrasonic coupling electrochemical coagulation phosphorus-contained wastewater |
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| CN101759249B true CN101759249B (en) | 2012-01-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109336302A (en) * | 2018-11-30 | 2019-02-15 | 江门市邑凯环保服务有限公司 | A kind of active dye wastewater processing method and processing device |
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| CN103951133B (en) * | 2014-05-16 | 2016-08-24 | 东莞市英硫净水服务有限公司 | A kind of oil-well wastewater Zero-discharge treating process and device |
| CN104692494B (en) * | 2015-02-27 | 2017-05-10 | 江苏江大环境工程有限责任公司 | Electrolysis phosphorous removal device |
| CN105251761A (en) * | 2015-11-10 | 2016-01-20 | 南京信息工程大学 | Ultrasonic degradation instrument and application thereof to aspect of soil organic pollutant degradation |
| CN105417811B (en) * | 2016-01-13 | 2018-03-27 | 深圳市水务技术服务有限公司 | A kind of tubular type wastewater treatment equipment and processing method for waste water |
| CN109467229B (en) * | 2018-12-04 | 2021-05-25 | 湖南工程学院 | Electrochemical treatment method for organic wastewater |
| CN112875970A (en) * | 2021-01-18 | 2021-06-01 | 长沙工研院环保有限公司 | Ultrasonic alternating current flocculation phosphorus removal device and method |
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2010
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109336302A (en) * | 2018-11-30 | 2019-02-15 | 江门市邑凯环保服务有限公司 | A kind of active dye wastewater processing method and processing device |
| CN109336302B (en) * | 2018-11-30 | 2021-11-05 | 江门市邑凯环保服务有限公司 | Reactive dye wastewater treatment method and device |
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