CN110526349A - A kind of electricity auxiliary membrane separating method - Google Patents
A kind of electricity auxiliary membrane separating method Download PDFInfo
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- CN110526349A CN110526349A CN201810826699.5A CN201810826699A CN110526349A CN 110526349 A CN110526349 A CN 110526349A CN 201810826699 A CN201810826699 A CN 201810826699A CN 110526349 A CN110526349 A CN 110526349A
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- membrane
- electrode
- water
- membrane material
- working electrode
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Classifications
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
Abstract
The present invention provides a kind of electricity auxiliary membrane separating method, it is therefore an objective to make it have certain electrode potential and charge by applying electrode voltage on membrane material, carry out efficient water process by electrochemical reaction, sieve effect and charge effect synergistic effect.Pending water enters membrane material working electrode (2) from water inlet (1), enter reaction chamber (3) afterwards by membrane material working electrode (2), is discharged using to after electrode (5) from water outlet (6)；Membrane material working electrode (2) connect power supply (4) with to electrode (5).Electricity auxiliary membrane separating method of the invention, variety classes waste water is able to achieve by electric auxiliary system adjusting film surface electrode potential to be effectively treated, demulsification, contact break and the removal COD being able to achieve in waste water, separate pollutant from waste water simultaneously, for the treatment effect that different types of waste water is optimal by adjusting the electrode potential on membrane material, there is apparent economic, society and environmental benefit.
Description
Technical field
The invention belongs to water-treatment technology fields, and in particular to a kind of electricity auxiliary membrane processing method.
Background technique
With the rapid development of all trades and professions, the problem of water environment pollution, is got worse in world wide, while water body is dirty
The problem of dye, also tends to diversification.The high speed development that the swift and violent growth of population keeps China's per capita water resource increasingly in short supply, industrial, together
When along with a large amount of waste water it is untreated or processing it is not up to standard be directly discharged into major water system, cause surface water pollution extremely serious.
It is that China is very important that the contradiction of supply and demand for the water resource, Ecology degeneration, water environment pollution and all kinds of extreme and emergency events, which take place frequently,
Outstanding problem.These problems all directly or indirectly influence the development of human lives, economy and society.In order to save and protect
Water resource is protected, realizes sustainable development, needs us to develop new water treatment technology and method to handle increasing give up
Water.Industrial wastewater is mainly derived from industrial processes, wherein having production waste water, sewage and waste liquid.With industry it is rapid
Development, the discharge amount of industrial wastewater also with industrial water consumption substantial increase and be continuously increased.However it is polluted in industrial wastewater
Composition, property and the city domestic sewage of object have very big difference, and industrial wastewater has these following features: the pollutant in waste water
Ingredient is complex, the pollutant composition between different industries in waste water is widely different；Pollutant concentration range is big, water quality situation
It fluctuates also big；Poisonous and hazardous pollutant kind is various and is difficult to biodegradable method processing etc..Industrial wastewater is without place
The row of stealing of reason is the status for resulting in water environment in China pollution.Since the complexity of the ingredient of industrial wastewater and harm are big, often need
Can be just input in municipal wastewater treatment plant after targeted specific process is handled and handles or be discharged into water body.
Membrane technology is referred to as " water treatment technology in 2l century ", is just widely used, is acknowledged as in water process
It is one of the technology for most having development potentiality 21 century.As a kind of novel isolation technics, membrane separation technique can be recovered to one
A little useful substances, and waste water can effectively be purified.Have the characteristics that easy to operate, facility is simple, energy conservation simultaneously, therefore
It is widely used in various Industrial Wastewater Treatments and there is wide development potentiality.Oneself grinds through maturation and constantly at present
The micro-filtration (MF) that issues, ultrafiltration (UF), nanofiltration (NF), reverse osmosis (RO), electrodialysis (ED) etc. are constantly applied to Industry Waste
Water process and circulating and recovering, sewage recycling and seawater desalination and purification etc..Membrane filtration technology is as water process new technology
One of, it has broad prospects.Membrane filtration be exactly the film pressure at both sides under the action of liquid pass through membrane body, dissolution substance is trapped
How much their size, shape and concentration etc. are depended on.Under normal conditions, the removal efficiency of membrane filtration technology be 50%-90%, one
As be 80% or more.
Electrochemical process is the technique of a kind of " environmental-friendly " in wastewater processing technology, and cardinal principle is to pass through electrochemical process
The electronics of generation and the ion of Pollutants in Wastewater composition react, and will not generate secondary pollution after handling, with electric power
The rapid development of industry, the cost of electric energy gradually decreases and the continuous research and development of some new processes, and electrochemistry hair processing waste water is in green
Process aspect great potential, it is expected to be used widely.It has the following characteristics that
(1) electronics is only shifted and is transmitted between electrode and waste water component, is not required in addition add reductant-oxidant, be kept away
Exempted from introduce other chemical substances and caused by secondary pollution problem；
(2) it is swift in response, high to wastewater treatment chroma removal rate, sludge output is few；
(3) operating condition is mild, can carry out at normal temperatures and pressures, convenient for management, it is easy to accomplish automation；
(4) waste water big for pollutant kind and concentration variation range can be carried out by the adjusting to electric current and voltage
Control, to guarantee that effluent quality is up to standard；
(5) reaction efficiency is high, and the time of processing is short, and reaction unit is simple, and occupation area of equipment is small, and construction cost is little；
(6) it acts not only as individually handling, and can be in conjunction with other processing methods, such as pre-treatment, passes through
Bio-toxicity pollutant or hardly degraded organic substance are converted to the substance being readily biodegradable, to improve biological can dropping for waste water
Xie Xing, conducive to biochemical treatment later；
(7) power consumption in treatment process is big, and soluble electrode material consumption is larger, and electrode material is easy to be corroded.
Membrane reactor is membrane process and the new technology that reaction process combines.The step of being provided simultaneously with reaction and separation.
With series of advantages: reaction and separation are combined into single unit process, reduce the expense of the processes such as separation；For can be converse
It answers, breaks through thermodynamical equilibrium limitation, product is removed by membrane diffusion process；Reaction process parameter is adjusted, reaction condition is mitigated, mentions
The selectivity and yield of high purpose product reduce side reaction.Membrane processing method by electricity auxiliary is being electrochemically reacted place
UF membrane, and the electrode potential of controllable membrane electrode are directly carried out after reason.
Summary of the invention
The purpose of the present invention is overcoming deficiency existing for existing embrane method and electrochemical process water treatment technology, provide a kind of novel
Efficient electricity auxiliary membrane separating method.This method is simple to operate, electric energy is saved, to good waste water treatment effect.
The object of the present invention is achieved like this: pending water enters from the inlet membrane material working electrode, passes through membrane material
Enter reaction chamber after expecting working electrode, is discharged using to after electrode from water outlet；Membrane material working electrode connects with to electrode
Connect power supply.Electrode potential on adjusting film material working electrode, pending water adjustable electrode potential membrane material electrode and
Ion can be selectively penetrated, and then pass through due to having charge to carrying out electrochemical redox reaction in electrode, while on film
Sieve effect and charge effect achieve the purpose that separate depollution object.This method can be effectively reduced coloration in industrial wastewater,
The pollutants such as COD, suspended matter, grease and heavy metal, while pollutant being separated from waste water.Simultaneously for different types of useless
The treatment effect that water is optimal by adjusting the electrode potential on membrane material.
A kind of electricity auxiliary membrane processing method, it is characterised in that: pending water enters membrane material working electrode from water inlet (1)
(2), reaction chamber (3) are entered afterwards by membrane material working electrode (2), is discharged using to after electrode (5) from water outlet (6)；
Membrane material working electrode (2) connect power supply (4) with to electrode (5).
The membrane material working electrode (2) is the membrane separation assemblies that stainless steel or titanium material make.
Described membrane material working electrode (2) material can be including micro- according to the type of the type selective membrane of processing waste water
Filter membrane, ultrafiltration membrane or nanofiltration membrane.
The power supply (4) is DC power supply or the pulse power.
Positive beneficial effect: the present invention combines electrochemical process and membrane separation process, makes it by applying voltage on membrane material
With corresponding electrode potential and charge, acted synergistically by electrochemical reaction, sieve effect and charge effect, in conjunction with electrochemistry
The advantages of method and membrane separation process, invents a kind of energy-efficient electricity auxiliary membrane processing method.This method high treating effect, and power consumption
It is few.
Detailed description of the invention
Fig. 1 is system schematic of the invention；
In figure are as follows: including water inlet 1, membrane material working electrode 2, reaction chamber 3, power supply 4, to electrode 5, water outlet 6.
Specific embodiment
With reference to the accompanying drawing, the present invention is further illustrated: as shown in Figure 1, a kind of electricity auxiliary membrane processing method,
It is characterized in that, including water inlet 1, membrane material working electrode 2, reaction chamber 3, power supply 4, to electrode 5, water outlet 6.Pending water
Enter membrane material working electrode 2 from water inlet 1, by entering reaction chamber 3 after membrane material working electrode 2, using to electrode 5
It is discharged afterwards from water outlet 6；Membrane material working electrode 2 connect power supply 4 with to electrode 5.Electrode on adjusting film material working electrode
Potential, pending water is in the film work pole of adjustable electrode potential and to electrochemical redox reaction is carried out in electrode, simultaneously
Due to having charge on film, ion can be selectively penetrated, and then by sieve effect and charge effect, reach and separate depollution
The purpose of object.The pollutants such as coloration, COD, suspended matter, grease and heavy metal in industrial wastewater can be effectively reduced in this method, together
When pollutant is separated from waste water.Reached simultaneously for different types of waste water by adjusting the electrode potential on membrane material
Optimal treatment effect.
The membrane material working electrode (2) is the membrane separation assemblies that stainless steel or titanium material make.
Described membrane material working electrode (2) material can be including micro- according to the type of the type selective membrane of processing waste water
Filter membrane, ultrafiltration membrane or nanofiltration membrane.
The power supply (4) is DC power supply or the pulse power.
Embodiment one
DC power output voltage is 10V, and pump flow is set as 0.5L/min, and the processing time is 120min, is used
The method of this processing used cutting liquid, the COD removal rate of used cutting liquid is up to 90.68%, and the yield of oil is 5275mg/L.It should
Electricity auxiliary membrane processing method handles 1m3The power consumption of used cutting liquid is 6.6kWh.
Embodiment two
DC power output voltage is 8V, and pump flow is set as 0.5L/min, and the processing time is 60min.Use this
The method for handling electroplating wastewater, Cu2+Removal rate is up to 90.8%.The electricity assists membrane processing method to handle 1m3The consumption of electroplating wastewater
Electricity is 3.3kWh.
Claims (4)
1. a kind of electricity auxiliary membrane separating method, which is characterized in that pending water enters membrane material working electrode from water inlet (1)
(2), reaction chamber (3) are entered afterwards by membrane material working electrode (2), is discharged using to after electrode (5) from water outlet (6)；
Membrane material working electrode (2) connect power supply (4) with to electrode (5).
2. electricity auxiliary membrane separating method according to claim 1, it is characterised in that: membrane material working electrode (2) is stainless
Steel or the membrane separation assemblies of titanium material production.
3. electricity auxiliary membrane separating method according to claim 1, it is characterised in that: membrane material working electrode (2) material can
According to the type of the type selective membrane of processing waste water, including microfiltration membranes, ultrafiltration membrane or nanofiltration membrane.
4. electricity auxiliary membrane separating method according to claim 1, it is characterised in that: power supply (4) is DC power supply or pulse
Power supply.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810504423 | 2018-05-24 | ||
| CN2018105044235 | 2018-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110526349A true CN110526349A (en) | 2019-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810826699.5A Pending CN110526349A (en) | 2018-05-24 | 2018-07-25 | A kind of electricity auxiliary membrane separating method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9105171D0 (en) * | 1991-03-12 | 1991-04-24 | Kirk And Charashvili Internati | Electrochemical treatment of water and a device for electrochemically treating water |
| DE4328242A1 (en) * | 1993-08-19 | 1995-03-09 | Peter Johannes Janietz | Electrolysis body and process for treating waters and waste waters |
| CN101597096A (en) * | 2009-06-30 | 2009-12-09 | 天津工业大学 | A kind of electro-catalytic membrane reactor device |
| US20110278224A1 (en) * | 2010-05-14 | 2011-11-17 | Liao Zhimin | Wastewater separation system and method using the same |
| CN102603037A (en) * | 2012-04-01 | 2012-07-25 | 南京工业大学 | Organic wastewater treatment film reactor utilizing sunlight-assisted electro-catalysis |
| WO2017124798A1 (en) * | 2016-01-22 | 2017-07-27 | 同济大学 | Composite membrane separation method applicable to desalting and recycling of sewage |
-
2018
- 2018-07-25 CN CN201810826699.5A patent/CN110526349A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9105171D0 (en) * | 1991-03-12 | 1991-04-24 | Kirk And Charashvili Internati | Electrochemical treatment of water and a device for electrochemically treating water |
| DE4328242A1 (en) * | 1993-08-19 | 1995-03-09 | Peter Johannes Janietz | Electrolysis body and process for treating waters and waste waters |
| CN101597096A (en) * | 2009-06-30 | 2009-12-09 | 天津工业大学 | A kind of electro-catalytic membrane reactor device |
| US20110278224A1 (en) * | 2010-05-14 | 2011-11-17 | Liao Zhimin | Wastewater separation system and method using the same |
| CN102603037A (en) * | 2012-04-01 | 2012-07-25 | 南京工业大学 | Organic wastewater treatment film reactor utilizing sunlight-assisted electro-catalysis |
| WO2017124798A1 (en) * | 2016-01-22 | 2017-07-27 | 同济大学 | Composite membrane separation method applicable to desalting and recycling of sewage |
Non-Patent Citations (1)
| Title |
|---|
| 李建新;王虹;杨阳;: "膜技术处理印染废水研究进展", 膜科学与技术, no. 03 * |
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