CN110330081A - A kind of new multipolar aluminium cell phosphorus removing method - Google Patents
A kind of new multipolar aluminium cell phosphorus removing method Download PDFInfo
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- CN110330081A CN110330081A CN201910705985.0A CN201910705985A CN110330081A CN 110330081 A CN110330081 A CN 110330081A CN 201910705985 A CN201910705985 A CN 201910705985A CN 110330081 A CN110330081 A CN 110330081A
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- China
- Prior art keywords
- electrolytic cell
- water
- removing method
- phosphorus removing
- aluminium
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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
- C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- 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 present invention relates to the technical fields of wastewater treatment to slow down the passivation phenomenon of pole plate more particularly to a kind of new multipolar aluminium cell phosphorus removing method, extends the time of pole plate replacement, to reduce operating cost；The following steps are included: multipair electrode is arranged in (1) electrolyte bath, the clear water of clear water reserviors output is entered in electrolytic cell by water inlet, and the water for being electrolysed generation is overflowed from water outlet；(2) power supply is opened, changes the positive and negative anodes of multipair electrode in electrolytic cell by the time relay；(3) air blower gives electrolytic cell input air by bottom aeration tube.
Description
Technical field
The present invention relates to the technical fields of wastewater treatment, more particularly to a kind of new multipolar aluminium cell phosphorus removing method.
Background technique
It is well known that electric flocculation is to be existed under the action of extra electric field using the electrochemical reaction that soluble anode occurs
Nearby continuous generate metal cation (Fe2+, Fe3+, Al3+) is directly entered inside solution electrode surface, these cation warps
Hydrolysis, polymerization are crossed, a series of polyhydroxy base complexes and hydroxide can occur,
During electric flocculation, for electrode to reacting most important, aluminium is common anode material.Using aluminium sheet as electrode, leaching
Not in water, after being electrified, anode electrolysis under power supply effect generates aluminium ion, these ions can be with the P043- in sewage
Reaction produces insoluble compound, is then separated these insoluble compounds from sewage by being separated by solid-liquid separation；Part
Aluminium ion can react the hydroxy compounds and precipitating of generation aluminium within the scope of different PH with the OH- in sewage, in sewage
P043- can be adsorbed in the surface of the above substance, as precipitating and particulate matter are removed, to achieve the purpose that dephosphorization.Reaction
Principle is as follows:
Anode: 2Al → 2Al3++6e-
2Al3++6H2O→2Al(OH)3+6H+
Cathode: 6H++6e- → 3H2
Overall reaction: 2Al+6H2O → 2Al (OH) 3+3H2
nAl(OH)3→Aln(OH)3n
Under appropriate conditions, various hydrations, complex reaction can occur for Al3+, form dimerization, poly state hydroxyl aluminium ion
Complex compound all has extremely strong adsorption-flocculation effect.In person, the Al3+ for being electrolysed generation can form phosphorus with the PO43- in aqueous solution
The insoluble inorganic matter of one hydrogen aluminium of sour aluminium or phosphoric acid.
Traditional electrolysis phosphorus removing method is that sewage directly passes through electrolyte bath, the phosphorus in Al3+ and sewage that anode generates
Reach phosphor-removing effect in conjunction with the sediments such as aluminum phosphate or one hydrogen aluminium of phosphoric acid are formed, but the phosphorus removing method of this mode has certain disadvantage
End, the aluminum phosphate precipitates of generation are liable to stick on pole plate, aggravate the passivation of pole plate.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of passivation phenomenon for slowing down pole plate, extend pole plate replacement when
Between, to reduce the new multipolar aluminium cell phosphorus removing method of operating cost.
A kind of new multipolar aluminium cell phosphorus removing method of the invention, comprising the following steps: (1) electrolyte bath setting is more
To electrode, the clear water of clear water reserviors output is entered in electrolytic cell by water inlet, and the water for being electrolysed generation is overflowed from water outlet；
(2) power supply is opened, changes the positive and negative anodes of multipair electrode in electrolytic cell by the time relay；
(3) air blower gives electrolytic cell input air by bottom aeration tube.
A kind of new multipolar aluminium cell phosphorus removing method of the invention, the positive and negative anodes of multipair electrode are every in the step (2)
Change every 12h primary.
A kind of new multipolar aluminium cell phosphorus removing method of the invention, the step (2) carry out simultaneously with step (3).
Compared with prior art the invention has the benefit that multipair electrode is arranged in electrolyte tank, increase aluminum ions
Speed of separating out, electrolytic cell as the dosing tank of an Al3+, pole plate is not direct and waste water, the passivation for slowing down pole plate are existing
As, also, the electrolysis of this mode can be according to the speed of separating out of processing sewage phosphorus concentration regulating electrolytic tank Al3+, utmostly
Reduction energy consumption, a time relay is set in power supply box, and timing changes the positive and negative anodes of the multipair pole plate of electrolytic cell, and anode is blunt
Change refers in electrolytic process, generates some indissoluble substances in anode and generates one layer of passivating film, reduces the precipitation effect of metal ion
Rate, anodic passivity not only reduce sewage treating efficiency, while considerably increasing the consumption of electric energy, in the hydrogen that cathodic electrolytic water generates
Gas can form air bearing phenomenon in electrolytic cell, alleviate the passivation phenomenon of anode, and the air that aeration tube generates plays the role of two:
1, increase the oxygen content in electrolytic cell solution, improve phosphor-removing effect；2, play stirring action, be electrolysed aluminium sheet for a long time, aluminium from
Sub constantly enrichment, bottom precipitating easy to form；It is electrolysed the water generated to overflow from water outlet, water outlet is added to sewage as Dephosphorization reagent
The sedimentation basin of processing equipment, according to the phosphorus content of the water of processing and raw water, the volume of electrolytic cell and the quantity of electrolysis aluminium sheet can
Accordingly to adjust, to meet the phosphorus standard that is discharged, sharpest edges of the invention are that sewage is not directed through electrolyte tank, but use
Clear water is electrolysed the electrolyte containing aluminium ion of generation as Dephosphorization reagent by electrolytic cell, can slow down aluminium sheet passivation significantly in this way
Speed, by data learn compared with the prior art with respect to pole plate passivation time extend 144h, slow down the passivation phenomenon of pole plate, extend
The time of pole plate replacement, to reduce operating cost.
Detailed description of the invention
Fig. 1 is structure chart of the invention.
Specific embodiment
With reference to embodiment, the embodiment of the present invention is furthur described in detail.Following embodiment is used for
Illustrate the present invention, but is not intended to limit the scope of the invention.
Embodiment
Multipair electrode is arranged in electrolyte bath, and the clear water of clear water reserviors output is entered in electrolytic cell by water inlet, and electrolysis produces
Raw water is overflowed from water outlet, opens power supply, changes the positive and negative anodes of multipair electrode in electrolytic cell by the every 12h of the time relay,
Air blower gives electrolytic cell input air by bottom aeration tube simultaneously.
Comparative example
Sewage directly passes through electrolyte bath, and the phosphorus in Al3+ and sewage that anode generates, which combines, forms aluminum phosphate or phosphoric acid
The sediments such as one hydrogen aluminium.
By obtaining following data to embodiment and the implementation of comparative example method 5 times:
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications, these improvements and modifications can also be made
Also it should be regarded as protection scope of the present invention.
Claims (3)
1. a kind of new multipolar aluminium cell phosphorus removing method, which comprises the following steps:
(1) multipair electrode is arranged in electrolyte bath, and the clear water of clear water reserviors output is entered in electrolytic cell by water inlet, and electrolysis generates
Water from water outlet overflow；
(2) power supply is opened, changes the positive and negative anodes of multipair electrode in electrolytic cell by the time relay；
(3) air blower gives electrolytic cell input air by bottom aeration tube.
2. a kind of new multipolar aluminium cell phosphorus removing method as described in claim 1, which is characterized in that in the step (2)
The positive and negative anodes of multipair electrode change primary every 12h.
3. a kind of new multipolar aluminium cell phosphorus removing method as claimed in claim 2, which is characterized in that the step (2) with
Step (3) carries out simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910705985.0A CN110330081A (en) | 2019-08-01 | 2019-08-01 | A kind of new multipolar aluminium cell phosphorus removing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910705985.0A CN110330081A (en) | 2019-08-01 | 2019-08-01 | A kind of new multipolar aluminium cell phosphorus removing method |
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| Publication Number | Publication Date |
|---|---|
| CN110330081A true CN110330081A (en) | 2019-10-15 |
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| CN201910705985.0A Pending CN110330081A (en) | 2019-08-01 | 2019-08-01 | A kind of new multipolar aluminium cell phosphorus removing method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1257043A (en) * | 1998-12-16 | 2000-06-21 | 三洋电机株式会社 | Device and method for treating water containing phosphoric acid ion |
| DE102006060365A1 (en) * | 2006-12-15 | 2008-06-19 | Technische Fachhochschule Berlin | Method for reducing phosphate content of liquid e.g. waste water, comprises applying an electrical direct current voltage to two inert electrodes present in the liquid and transferring loaded fine dispersed or colloidal phosphate particles |
| CN108975566A (en) * | 2017-06-01 | 2018-12-11 | 重庆凯晶环保工程技术有限公司 | A kind of processing method of electroplating wastewater |
| CN210065272U (en) * | 2019-06-06 | 2020-02-14 | 广东维清环境工程有限公司 | Novel multi-pole aluminum cell dephosphorization equipment |
-
2019
- 2019-08-01 CN CN201910705985.0A patent/CN110330081A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1257043A (en) * | 1998-12-16 | 2000-06-21 | 三洋电机株式会社 | Device and method for treating water containing phosphoric acid ion |
| DE102006060365A1 (en) * | 2006-12-15 | 2008-06-19 | Technische Fachhochschule Berlin | Method for reducing phosphate content of liquid e.g. waste water, comprises applying an electrical direct current voltage to two inert electrodes present in the liquid and transferring loaded fine dispersed or colloidal phosphate particles |
| CN108975566A (en) * | 2017-06-01 | 2018-12-11 | 重庆凯晶环保工程技术有限公司 | A kind of processing method of electroplating wastewater |
| CN210065272U (en) * | 2019-06-06 | 2020-02-14 | 广东维清环境工程有限公司 | Novel multi-pole aluminum cell dephosphorization equipment |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20191015 |