CN108083455A - A kind of pulling flow type electrochemical softening of water method and apparatus - Google Patents
A kind of pulling flow type electrochemical softening of water method and apparatus Download PDFInfo
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- CN108083455A CN108083455A CN201810090161.2A CN201810090161A CN108083455A CN 108083455 A CN108083455 A CN 108083455A CN 201810090161 A CN201810090161 A CN 201810090161A CN 108083455 A CN108083455 A CN 108083455A
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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
- C02F1/4602—Treatment of water, waste water, or sewage by electrochemical methods for prevention or elimination of deposits
-
- 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
- C02F1/46104—Devices therefor; Their operating or servicing
-
- 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
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F2001/46119—Cleaning the electrodes
-
- 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
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F2001/46133—Electrodes characterised by the material
-
- 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
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F2001/46152—Electrodes characterised by the shape or form
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- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention discloses a kind of pulling flow type electrochemical softening of water method and apparatus.The spaced anodic-cathodic of right angle setting successively in electrochemical reactor, anodic-cathodic is staggered to form multiple electrodes room up and down, water passage is left in all cathodes or anode bottom, electrode chamber adjacent thereto is made to be connected in bottom, water passage is left at the top of all anode or cathodes, electrode chamber adjacent thereto is made to be connected at top, bottom water passage and top water passage are spaced.This method is two step blocked operations；Water softening stress-displacement stage：Hard water promotes water electrolysis using direct current, generates CaCO respectively by electrochemical reactor3With Mg (OH)2And cathode surface is deposited on, the hardness ions in water is removed；The cathode detergency stage：Air is passed through to electrochemical reactor, the shearing force generated using bubbles burst carries out cathode detergency, and the precipitation being removed is discharged from mud discharging mouth.The present invention is suitable for the softening of the industries industrial circulating waters such as electric power, oil, HVAC.
Description
Technical field
The present invention relates to electrochemical softening of water method and apparatus, more particularly, to a kind of pulling flow type electrochemical softening of water method
With device.
Background technology
The cold processing that cycles that electric power, petrochemical industry, steel and iron manufacturing industry evaporation cooling procedure generate in the middle all refers to
Softening.The conventional method softened both at home and abroad at present has chemical agent to add method, hyperfiltration and ion-exchange etc..These methods
Differ from one another.Compared with traditional method, electrochemistry tenderizer possesses that environmental-friendly, reaction condition is mild, treatment effeciency is high, suitable
With scope it is wide the advantages that, therefore in high rigidity wastewater treatment have good industrial applications prospect.
In recent years, electrochemical softening of water technology has carried out application study in industrial circulating water field, achieve it is larger into
Exhibition, makes people more urgent to the expectation of this technology.But also there are many keys urgently to be resolved hurrily for electrochemical degradation technology
Sex chromosome mosaicism, one of them is exactly the design of electrochemical degradation device.Complete mix flow is simple in structure, at present at home and abroad
It is most widely used, however, complete do not only exist serious back mixing, it is short stream and axial dispersion phenomenon, and exist compared with
More sloughs, this seriously reduces the volumetric efficiency of reactor, and then influences bating effect.Therefore, highly efficient electricity is designed
Chemical tendering water reactor is imperative.
The content of the invention
In order to overcome the problems of Conventional electrochemical reactor in background technology, it is an object of the invention to provide one
Kind pulling flow type electrochemical softening of water method and apparatus, to realize the efficient softening to industrial circulating water.
The technical solution adopted by the present invention is：
First, a kind of pulling flow type electrochemical softening of water method：
The spaced yin, yang electrode of right angle setting polylith successively in electrochemical reactor, using water softening and cathode detergency
Two step blocked operations；
1) the water softening stage：Hard water is 10-300A/m using current density by electrochemical reactor2Direct current promote
Water electrolysis, the OH that cathode surface generates- , with HCO in water3 - , Ca2+ And Mg2+Reaction generates CaCO respectively3 With Mg (OH)2And
It is deposited on cathode surface, the hardness ions in water is removed；
2) the cathode detergency stage：Air is passed through to electrochemical reactor, the shearing force generated using bubbles burst carries out cathode
Detergency is handled；After detergency, the precipitation being removed is discharged into electrochemical reactor from mud discharging mouth.
The water softening stage, 4.8 V-12.2 V of average voltage, processing water velocity are 40 L/h-80 L/h, are located
The reason time is 6h -12 h.
The cathode detergency stage, 25 L/min -45 L/min of detergency stage air velocity；Detergency phases-time 2
min-5 min。
2nd, a kind of pulling flow type electrochemical softening of water device：
The present invention include left upper portion is provided with water inlet, right upper portion is provided with water outlet and bottom be provided with mud discharging mouth electrochemistry it is anti-
Answer device shell；Anode is spaced with cathode and is perpendicularly fixed in electrochemical reactor；Anodic-cathodic is staggered to form more up and down
Water passage is left in a electrode chamber, all cathodes or anode bottom, electrode chamber adjacent thereto is made to be connected in bottom, all anodes
Or cathode top leaves water passage, and electrode chamber adjacent thereto is made to be connected at top, bottom water passage is crossed water with top and is led to
Road is spaced；Each anode interconnects, and each cathode also interconnects；Anode is connected with DC power anode, cathode and direct current
Power cathode is connected；Water inlet is connected through inlet valve with intake pump；Water outlet is connected with outlet valve；Bottom mud discharging mouth and mud valve
It is connected, bottom mud discharging mouth is connected through intake valve with air pump.
The anodic-cathodic is fixed on by U-lag in electrochemical reactor, and utilizes sealing strip or fluid sealant by electricity
Pole plate is sealed with U-lag.
Electrode spacing between the anode and cathode is 2~20 mm.
The upper end of the anode and cathode is respectively provided with protrusion perforation, and protrusion punching is fixed with wiring by screw to be connected
It connects, is finally connected with DC power supply.
The cathode material is corrosion resistant metal or alloy, and shape is plate.
The anode material is DSA electrodes, and shape is plate.
The invention has the advantages that：
1) back mixing, short stream and axial dispersion degree, slough plot ratio is significantly reduced to decline to a great extent.
2) reactor volume efficiency dramatically increases, and softening efficiency greatly improves.
3) significantly shorten between electrode, energy consumption declines to a great extent.
The present invention is suitable for the softening of the industries industrial circulating waters such as electric power, oil, HVAC.
Description of the drawings
Fig. 1 is structure principle chart of the present invention.
Fig. 2 is the A-A sectional views of Fig. 1 electrochemical reactors.
Fig. 3 is the B-B sectional views of Fig. 1 electrochemical reactors.
In figure：1st, intake pump, 2, inlet valve, 3, water inlet, 4, cathode, 5, anode, 6, water outlet, 7, outlet valve, 8, electricity
Chemical reactor shell, 9, electrochemical reactor, 10, mud discharging mouth, 11, mud valve, 12, intake valve, 13, air pump.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and embodiments
As shown in Figure 1, Figure 2, Figure 3 shows, the present invention is provided with water inlet 3 including left upper portion, right upper portion is provided with water outlet 6 and bottom
It is provided with the electrochemical reactor shell 8 of mud discharging mouth 10；Anode 5 is spaced with cathode 4 and is perpendicularly fixed at electrochemical reactor 9
It is interior；Anodic-cathodic is staggered to form multiple electrodes room up and down, and it is (cloudy in Fig. 1 that water passage is left in all cathodes 4 or 5 bottom of anode
Leave water passage in 4 bottom of pole), electrode chamber adjacent thereto is made to be connected in bottom, all anodes 5 or 4 top of cathode were left
Aquaporin (Fig. 1 Anodics 5 top leave water passage) makes electrode chamber adjacent thereto be connected at top, bottom water passage with
Top water passage is spaced；Each anode 5 interconnects, and each cathode 4 also interconnects；Anode 5 and DC power anode phase
Even, cathode 4 is connected with DC power cathode；Water inlet 3 is connected through inlet valve 2 with intake pump 1；Water outlet 6 and 7 phase of outlet valve
Even；Bottom mud discharging mouth 10 is connected with mud valve 11, and bottom mud discharging mouth 10 is connected through intake valve 12 with air pump 13.
As shown in Fig. 2, the anodic-cathodic is fixed on by U-lag in electrochemical reactor 9, and using sealing strip or
Fluid sealant seals electrode plate and U-lag.
Electrode spacing between the anode 5 and cathode 4 is 2~20 mm.
As shown in Fig. 2, the upper end of the anode 5 and cathode 4 is respectively provided with protrusion perforation, protrusion punching passes through with wiring
Screw is fixedly connected, and is finally connected with DC power supply.
4 material of cathode is corrosion resistant metal or alloy, and shape is plate.
5 material of anode is DSA electrodes, and shape is plate.
Present invention processing and regenerative process are using water softening and two step blocked operations of cathode detergency；
1) when carrying out water softening processing：Intake valve 12 and mud valve 11 are closed, opens inlet valve 2 and outlet valve 7；Open water inlet
Hard water is inputted electrochemical reactor 9 by pump 1 by inlet valve 2 from water inlet 3, and hard water passes sequentially through a series of electrodes with baffling state
Room.It is separated between each electrode chamber by staggered pattern above and below electrode, water passage is left in a portion electrode plate bottom, makes
Electrode chamber adjacent thereto is connected in bottom, and another part electrode plate top leaves water passage, electrode chamber adjacent thereto is made to exist
Top connects, and bottom water passage and top water passage are spaced；DC power supply is opened simultaneously, to electrochemical reactor 9
Apply direct current, be 10-300A/m using current density2Direct current promote water electrolysis, 4 surface of cathode generate OH- , with
HCO in water3 - , Ca2+ And Mg2+Reaction generates CaCO respectively3 With Mg (OH)2And cathode surface is deposited on, the hardness ions in water
It is removed；In processing procedure, the gas that two electrodes generate is discharged by natural buoyancy from 9 top of electrochemical reactor.
2) when carrying out cathode detergency：DC power supply, inlet valve 2 and outlet valve 7 are closed, opens intake valve 12；Open air pump
Air is blasted electrochemical reactor 9 by 13 by intake valve 12 from each mud discharging mouth 10, passes through electrochemical reactor from bottom to top
9, the significant shear power generated using bubbles burst carries out detergency processing to cathode 4, and the precipitation of removing is transferred to from cathode surface
Water phase；During detergency, bubble is discharged by natural buoyancy from 9 top of electrochemical reactor；After detergency, intake valve is closed
12；Mud valve 11 is opened, the precipitation of removing is discharged from mud valve 11.
It is the embodiment of the present invention below.
Embodiment 1
Hardness is about 350 mg/L, and the industrial circulating water that inhibitor concentration is about 2 mg/L uses the electricity of pulling flow type shown in FIG. 1
Chemical tendering water installations are handled.The size of anodic-cathodic is 10 × 10 × 2 cm, and the spacing between electrode is 10 mm,
Reactor volume is 1400 mL.Operating condition is as follows：40 A/m of softening stress-displacement stage current density2；Softening stress-displacement stage average voltage 4.8
V；40 L/h of softening stress-displacement stage processing water velocity；Softening stress-displacement stage processing lasts 12 h；45 L/min of detergency stage air velocity；It is de-
Dirty 5 min of phases-time.Operation result is as follows：Softening stress-displacement stage goes out total hardness of water ion average removal rate for 19.3 %, deposition speed
Rate is 30.6 g/h/m2, the CaCO of 5.7 kWh/kg of energy consumption3。
Embodiment 2
Hardness is about 350 mg/L, and the industrial circulating water that inhibitor concentration is about 2 mg/L uses the electricity of pulling flow type shown in FIG. 1
Chemical tendering water installations are handled.The size of anodic-cathodic is 10 × 10 × 2 cm, and the spacing between electrode is 20 mm,
Reactor volume is 1400 mL.Operating condition is as follows：10 A/m of softening stress-displacement stage current density2；Softening stress-displacement stage average voltage 6.5
V, 80 L/h of softening stress-displacement stage processing water velocity；Softening stress-displacement stage processing lasts 9 h；25 L/min of detergency stage air velocity；It is de-
Dirty 10 min of phases-time.Operation result is as follows：Softening stress-displacement stage goes out total hardness of water ion average removal rate for 13.5 %, deposition speed
Rate is 14.4 g/h/m2, the CaCO of 11.2 kWh/kg of energy consumption3。
Embodiment 3
Hardness is about 350 mg/L, and the industrial circulating water that inhibitor concentration is about 2 mg/L uses the electricity of pulling flow type shown in FIG. 1
Chemical tendering water installations are handled.The size of anodic-cathodic is 10 × 10 × 2 cm, and the spacing between electrode is 2 mm, instead
It is 1400 mL to answer device volume.Operating condition is as follows：300 A/m of softening stress-displacement stage current density2；Softening stress-displacement stage average voltage 12.2
V；60 L/h of softening stress-displacement stage processing water velocity；Softening stress-displacement stage processing lasts 6 h；60 L/min of detergency stage air velocity；It is de-
Dirty 2 min of phases-time.Operation result is as follows：Softening stress-displacement stage goes out total hardness of water ion average removal rate for 16.1 %, deposition speed
Rate is 105.74 g/h/m2, the CaCO of 56.2 kWh/kg of energy consumption3。
Claims (9)
- A kind of 1. pulling flow type electrochemical softening of water method, it is characterised in that：Right angle setting polylith phase successively in electrochemical reactor Between the yin, yang electrode that arranges, using water softening and two step blocked operations of cathode detergency；1) the water softening stage：Hard water is 10-300A/m using current density by electrochemical reactor2Direct current promote Water electrolysis, the OH that cathode surface generates- , with HCO in water3 - , Ca2+ And Mg2+Reaction generates CaCO respectively3 With Mg (OH)2And It is deposited on cathode surface, the hardness ions in water is removed；2) the cathode detergency stage：Air is passed through to electrochemical reactor, the shearing force generated using bubbles burst carries out cathode Detergency is handled；After detergency, the precipitation being removed is discharged into electrochemical reactor from mud discharging mouth.
- 2. a kind of pulling flow type electrochemical softening of water method according to claim 1, it is characterised in that：The water softening rank Section, 4.8 V-12.2 V of average voltage, processing water velocity are 40 L/h-80 L/h, and processing time is 6h -12 h.
- 3. a kind of pulling flow type electrochemical softening of water method according to claim 1, it is characterised in that：The cathode detergency rank Section, 25 L/min -45 L/min of detergency stage air velocity；2 min-5 min of detergency phases-time.
- 4. for a kind of pulling flow type electrochemical softening of water device of claim 1 the method, it is characterised in that：Including on left side Portion is provided with water inlet（3）, right upper portion be provided with water outlet（6）Mud discharging mouth is provided with bottom（10）Electrochemical reactor shell （8）；Anode（5）With cathode（4）It is spaced and be perpendicularly fixed at electrochemical reactor（9）It is interior；Stagger mode above and below anodic-cathodic Into multiple electrodes room, all cathodes（4）Or anode（5）Water passage is left in bottom, and electrode chamber adjacent thereto is made to connect in bottom It is logical, all anodes（5）Or cathode（4）Water passage is left at top, electrode chamber adjacent thereto is made to be connected at top, water is crossed in bottom Passage and top water passage are spaced；Each anode（5）It interconnects, each cathode（4）Also interconnect；Anode（5）With it is straight Stream positive pole is connected, cathode（4）It is connected with DC power cathode；Water inlet（3）Through inlet valve（2）With intake pump（1）It is connected； Water outlet（6）With outlet valve（7）It is connected；Bottom mud discharging mouth（10）With mud valve（11）It is connected, bottom mud discharging mouth（10）Through air inlet Valve（12）With air pump（13）It is connected.
- 5. a kind of pulling flow type electrochemical softening of water device according to claim 4, it is characterised in that：The anodic-cathodic leads to It crosses U-lag and is fixed on electrochemical reactor（9）It is interior, and sealed electrode plate and U-lag using sealing strip or fluid sealant.
- 6. a kind of pulling flow type electrochemical softening of water device according to claim 4, it is characterised in that：The anode（5）With Cathode（4）Between electrode spacing be 2~20 mm.
- 7. a kind of pulling flow type electrochemical softening of water device according to claim 4, it is characterised in that：The anode（5）With Cathode（4）Upper end be respectively provided with protrusion perforation, protrusion punching is fixedly connected with wiring by screw, finally and DC power supply It is connected.
- 8. a kind of pulling flow type electrochemical softening of water device according to claim 4, it is characterised in that：The cathode（4）Material Expect that for corrosion resistant metal or alloy, shape is plate.
- 9. a kind of pulling flow type electrochemical softening of water device according to claim 4, it is characterised in that：The anode（5）Material Expect that for DSA electrodes, shape is plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810090161.2A CN108083455A (en) | 2018-01-30 | 2018-01-30 | A kind of pulling flow type electrochemical softening of water method and apparatus |
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| CN201810090161.2A CN108083455A (en) | 2018-01-30 | 2018-01-30 | A kind of pulling flow type electrochemical softening of water method and apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111039421A (en) * | 2019-12-12 | 2020-04-21 | 江苏京源环保股份有限公司 | Circulating water online descaling device and method based on electrochemistry |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004066055A (en) * | 2002-08-02 | 2004-03-04 | Fuji Electric Holdings Co Ltd | Apparatus for treating liquid |
| CN102211801A (en) * | 2010-04-01 | 2011-10-12 | 上海晶园环保科技有限公司 | Electrochemical reaction device and method for treating high-concentration organic wastewater |
| US20130126448A1 (en) * | 2007-10-14 | 2013-05-23 | 1612017 Alberta Ltd. | Solids removal system and method |
| CN107244772A (en) * | 2017-05-03 | 2017-10-13 | 浙江大学 | Air washes away the electrochemical softening of water method and system of detergency |
| CN207933137U (en) * | 2018-01-30 | 2018-10-02 | 浙江大学 | A kind of pulling flow type electrochemical softening of water device |
-
2018
- 2018-01-30 CN CN201810090161.2A patent/CN108083455A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004066055A (en) * | 2002-08-02 | 2004-03-04 | Fuji Electric Holdings Co Ltd | Apparatus for treating liquid |
| US20130126448A1 (en) * | 2007-10-14 | 2013-05-23 | 1612017 Alberta Ltd. | Solids removal system and method |
| CN102211801A (en) * | 2010-04-01 | 2011-10-12 | 上海晶园环保科技有限公司 | Electrochemical reaction device and method for treating high-concentration organic wastewater |
| CN107244772A (en) * | 2017-05-03 | 2017-10-13 | 浙江大学 | Air washes away the electrochemical softening of water method and system of detergency |
| CN207933137U (en) * | 2018-01-30 | 2018-10-02 | 浙江大学 | A kind of pulling flow type electrochemical softening of water device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111039421A (en) * | 2019-12-12 | 2020-04-21 | 江苏京源环保股份有限公司 | Circulating water online descaling device and method based on electrochemistry |
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