CN107445257A - A kind of membrane capacitance deionization system and its method for handling nitrate sewage - Google Patents
A kind of membrane capacitance deionization system and its method for handling nitrate sewage Download PDFInfo
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- CN107445257A CN107445257A CN201710683927.3A CN201710683927A CN107445257A CN 107445257 A CN107445257 A CN 107445257A CN 201710683927 A CN201710683927 A CN 201710683927A CN 107445257 A CN107445257 A CN 107445257A
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- fluid reservoir
- water fluid
- membrane capacitance
- pipeline
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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
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4691—Capacitive deionisation
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
- C02F2201/4612—Controlling or monitoring
- C02F2201/46125—Electrical variables
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
- C02F2201/4616—Power supply
- C02F2201/4617—DC only
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- Molecular Biology (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material 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 membrane capacitance deionization system and its method for handling nitrate sewage, the system to include pipeline, dc source, raw water fluid reservoir, water pump, membrane capacitance component, fresh water fluid reservoir, concentrated water fluid reservoir, electric conductivity detector, data logger and dynamic valve；Wherein, water inlet is set on raw water fluid reservoir, and it is connected with membrane capacitance component by pipeline, water pump is installed, dc source is connected with membrane capacitance component, and membrane capacitance component separately sets pipeline and connects fresh water fluid reservoir and concentrated water fluid reservoir respectively on pipeline, connect and dynamic valve is installed on the pipeline of fresh water fluid reservoir, delivery port is set on fresh water fluid reservoir, and electric conductivity detector is connected with water inlet, delivery port and data logger respectively, and concentrated water fluid reservoir is connected with raw water fluid reservoir by pipeline.The method of the processing nitrate sewage of the present invention is adapted to handle high concentration nitrate waste water, and technique is simple, and desalting efficiency is high.
Description
Technical field
The invention belongs to water treatment field, and in particular to a kind of membrane capacitance deionization system and its processing nitrate sewage
Method.
Background technology
Water is the source of human life, with expanding economy and the aggravation of mankind's activity so that the pollution of water environment is got over
Come more serious, underground water also receives very big pollution as a part for water resource.Underground water due to industry, agricultural, life,
A large amount of discharges of the waste water such as medical treatment, have caused different regions different degrees of underground water pollution occur.Influence quality of groundwater
Pollutant have many kinds, most common inorganic pollution is exactly nitrate.The relatively common pollution of nitrate underground water the most
Thing, makes its research have great significance.With developing rapidly for industrial and agricultural production, current many national underground water all by
To the pollution of nitrate, and there is the trend of worsening.NO3-Endanger human health, NO3-It is reduced to after into human body
NO2-, NO2-There is carcinogenesis.In addition, the NO sucked in infants3-Acted on after into blood with hemoglobin, by Fe (II)
It is oxidized to Fe (III) and results in ferrihemoglobin, with oxygen Irreversible binding occurs for ferrihemoglobin, causes siderosis
Lactoferrin disease.Containing the harm caused by nitrate in drinking-water, in high concentration (>10mg/l, in terms of nitrogen) when, pregnant woman may be caused to flow
Production and neonate Lan Ying diseases (anoxic is lethal)；May be carcinogenic during middle concentration (1-10mg/l).Therefore the removal of azotate pollution
The focus of people's growing interest is turned into.
The currently used method for removing nitrate has counter-infiltration, chemical denitrogenation, biological denitrificaion, ion exchange etc.
Deng.These methods are all there is certain limitation, and as cost is too high, treatment effeciency is low, the problems such as being not easy operational administrative.
The content of the invention
The membrane capacitance deionization desalting technology new as one, so that its energy consumption is low, the high pass for enjoying people for the treatment of effeciency
Note.Under electric field action, cation in solution moves to negative pole, and anion moves to positive pole, respectively through amberplex,
And the electrode material surface at both ends is adsorbed respectively, as ion is constantly adsorbed, effects of ion concentration constantly declines, so as to
The purpose for removing nitrate is reached.
For overcome the deficiencies in the prior art, for azotate pollution in current water body it is serious the problem of, mesh of the invention
Be provide a kind of membrane capacitance deionization system and its handle nitrate sewage method, have technique it is simple, desalting efficiency
The advantages of high.
The present invention is achieved by the following technical solutions：
A kind of membrane capacitance deionization system, including it is pipeline, dc source, raw water fluid reservoir, water pump, membrane capacitance component, light
Water fluid reservoir, concentrated water fluid reservoir, electric conductivity detector, data logger and dynamic valve；Wherein, water inlet is set on raw water fluid reservoir
Mouthful, and be connected with membrane capacitance component by pipeline, water pump is installed, dc source is connected with membrane capacitance component, film electricity on pipeline
Appearance component separately sets pipeline and connects fresh water fluid reservoir and concentrated water fluid reservoir respectively, is installed on the pipeline of connection fresh water fluid reservoir dynamic
Valve, delivery port is set on fresh water fluid reservoir, electric conductivity detector is connected with water inlet, delivery port and data logger respectively, institute
Concentrated water fluid reservoir is stated with the raw water fluid reservoir by pipeline to be connected.
The method of processing nitrate sewage based on the membrane capacitance deionization system, comprises the following steps：
Step 1) nitrate sewage enters system, the initial electricity of electric conductivity detector record from the water inlet on raw water fluid reservoir
Conductance, membrane capacitance component is entered in the presence of water pump by pipeline, provide voltage through dc source, enter in membrane capacitance component
Row desalting processing, the real-time recording solution conductivity variations situation of electric conductivity detector simultaneously send data to data logger, opened
Startup power valve, the water after processing enter fresh water fluid reservoir, can discharged by delivery port；
For step 2) when water inlet, delivery port electrical conductivity are consistent, electrode reaches adsorption saturation, by power positive cathode reversal connection,
The ion adsorbed on electrode is reentered in solution, and absorption regeneration desalting processing is carried out in membrane capacitance component, closes power
Valve, the water after regeneration enter concentrated water fluid reservoir and are back to raw water fluid reservoir, circular treatment.
Preferably, the voltage strength that the dc source provides is stable in 1.2V.
Preferably, the time of the desalting processing is 55min.
Preferably, when the water inlet is consistent with the electrical conductivity of delivery port, electrical conductivity is 105~116 μ S/cm.
Advantages of the present invention is as follows：
Nitrate sewage is handled using the membrane capacitance deionization system of the present invention, energy consumption can be reduced, it is more environmentally friendly, and compare
Prior art, this method desalting efficiency is higher, and nitrate removal rate can reach more than 80%, easy to operate, function admirable.
Brief description of the drawings
Fig. 1 is the structural representation of the membrane capacitance deionization system of the present invention；
Wherein：1st, dc source；2nd, raw water fluid reservoir；3rd, water pump；4th, membrane capacitance component；5th, fresh water fluid reservoir；6th, concentrated water
Fluid reservoir；7th, electric conductivity detector；8th, data logger；9th, dynamic valve.
Embodiment
The invention will now be described in further detail with reference to the accompanying drawings.
A kind of membrane capacitance deionization system, as shown in figure 1, including pipeline, dc source 1, raw water fluid reservoir 2, water pump 3,
Membrane capacitance component 4, fresh water fluid reservoir 5, concentrated water fluid reservoir 6, electric conductivity detector 7, data logger 8 and dynamic valve 9；Wherein,
Water inlet is set on raw water fluid reservoir 2, and is connected with membrane capacitance component 4 by pipeline, water pump 3, direct current are installed on pipeline
Source 1 is connected with membrane capacitance component 4, and membrane capacitance component 4 separately sets pipeline and connects fresh water fluid reservoir 5 and concentrated water fluid reservoir 6 respectively, connection
Dynamic valve 9 is installed on the pipeline of fresh water fluid reservoir 5, delivery port is set on fresh water fluid reservoir 5, electric conductivity detector 7 respectively with
5 delivery port is connected with data logger 8 on water inlet, fresh water fluid reservoir on raw water fluid reservoir 2, concentrated water fluid reservoir 6 and original
Water fluid reservoir 2 is connected by pipeline.
A kind of method for handling nitrate sewage, is comprised the following steps that：
Nitrate sewage enters system from the water inlet on raw water fluid reservoir, and sewage enters film electricity in the presence of water pump 3
Hold component 4, in 40ml/min, dc source 1 provides stable 1.2V voltages and carries out desalting processing flow control；Turn on the power valve 9,
Water after processing enters fresh water fluid reservoir 5；Electric conductivity detector 7 record in real time the electrical conductivity of water inlet and delivery port and transmit to
Data logger 8；When the electrical conductivity of water inlet, delivery port is consistent, electrode adsorption saturation, by power positive cathode reversal connection, absorption
Ion on electrode is reentered in solution, is regenerated；Dynamic valve 9 is closed, the water after regeneration enters concentrated water fluid reservoir 6 simultaneously
It is back to raw water fluid reservoir 2 and carries out circular treatment.
Embodiment 1
Raw water nitrate concentration is 200mg/L, and it is 672 μ S/cm that electric conductivity detector 7, which records initial conductivity value, is passed through
Pipeline enters membrane capacitance component 4 in the presence of water pump 3, and flow control is in 40ml/min；Dc source 1 and membrane capacitance component 4
It is connected and voltage progress desalting processing is provided, voltage stabilization is in 1.2V；By 55min desalting processing, electrode adsorption reaches saturation,
The electrical conductivity of entery and delivery port maintains 116 μ S/cm, by being converted into nitrate concentration, calculates nitrate removal rate and reaches
82%, turn on the power valve 9, and the water after processing enters fresh water fluid reservoir 5, can be expelled directly out；Power positive cathode is subjected to reversal connection, inhaled
The ion being attached on electrode is reentered in solution, and electrical conductivity constantly rises, and closes dynamic valve 9, and concentrated water enters concentrated water fluid reservoir 6
And it is back to raw water fluid reservoir 2 and continues to handle.
Embodiment 2
Raw water nitrate concentration is 136mg/L, and it is 643 μ S/cm that electric conductivity detector 7, which records initial conductivity value, is passed through
Pipeline enters membrane capacitance component 4 in the presence of water pump 3, and flow control is in 40ml/min；Dc source 1 and membrane capacitance component 4
It is connected and voltage progress desalting processing is provided, voltage stabilization is in 1.2V；By 55min desalting processing, electrode adsorption reaches saturation,
The electrical conductivity of entery and delivery port maintains 105 μ S/cm, by being converted into nitrate concentration, calculates nitrate removal rate and reaches
84%, turn on the power valve 9, and the water after processing enters fresh water fluid reservoir 5, can be expelled directly out；Power positive cathode is subjected to reversal connection, inhaled
The ion being attached on electrode is reentered in solution, and electrical conductivity constantly rises, and closes dynamic valve 9, and concentrated water enters concentrated water fluid reservoir 6
And it is back to raw water fluid reservoir 2 and continues to handle.
Reference examples 1
Nitrate wastewater is handled using reverse osmosis membrane system：
Raw water nitrate concentration is 136mg/L, is passed to cellulose acetate reverse osmosis film.Continuous operation 55min, water outlet
Nitrate concentration is 48mg/L, can be calculated nitrate removal rate up to 65%.
Reference examples 2
Nitrate wastewater is handled using electrodialytic technique：
Raw water nitrate concentration is 136mg/L, is passed to electrodialysis system.Continuous operation 55min, water outlet nitrate are dense
Spend for 55mg/L, can be calculated nitrate removal rate up to 61%.
Pass through comparative example 2 and reference examples 1,2, it is known that utilize the membrane capacitance deionization system processing nitrate of the present invention
Sewage, clearance is significantly improved compared with conventional reverse osmosis system, electrodialysis system, more environmentally-friendly, function admirable and energy-conservation.
Claims (5)
1. a kind of membrane capacitance deionization system, it is characterised in that including pipeline, dc source, raw water fluid reservoir, water pump, film electricity
Hold component, fresh water fluid reservoir, concentrated water fluid reservoir, electric conductivity detector, data logger and dynamic valve；Wherein, raw water fluid reservoir
Upper setting water inlet, and be connected with membrane capacitance component by pipeline, water pump, dc source and membrane capacitance component are installed on pipeline
It is connected, membrane capacitance component separately sets pipeline and connects fresh water fluid reservoir and concentrated water fluid reservoir respectively, on the pipeline for connecting fresh water fluid reservoir
Dynamic valve is installed, delivery port is set on fresh water fluid reservoir, electric conductivity detector respectively with water inlet, delivery port and data record
Instrument is connected, and the concentrated water fluid reservoir is connected with the raw water fluid reservoir by pipeline.
2. the method for the processing nitrate sewage based on the membrane capacitance deionization system described in claim 1, comprises the following steps：
Step 1) nitrate sewage enters system from the water inlet on raw water fluid reservoir, and electric conductivity detector records initial conductance
Rate, membrane capacitance component is entered in the presence of water pump by pipeline, provide voltage through dc source, carried out in membrane capacitance component
Desalting processing, the real-time recording solution conductivity variations situation of electric conductivity detector simultaneously send data to data logger, open
Dynamic valve, the water after processing enter fresh water fluid reservoir, can discharged by delivery port；
For step 2) when water inlet, delivery port electrical conductivity are consistent, electrode reaches adsorption saturation, by power positive cathode reversal connection, absorption
Ion on electrode is reentered in solution, and absorption regeneration desalting processing is carried out in membrane capacitance component, closes dynamic valve, then
Water after life enters concentrated water fluid reservoir and is back to raw water fluid reservoir, circular treatment.
3. a kind of method for handling nitrate sewage according to claim 2, it is characterised in that the dc source provides
Voltage strength it is stable in 1.2V.
4. it is according to claim 2 it is a kind of handle nitrate sewage method, it is characterised in that the desalting processing when
Between be 55min.
5. a kind of method for handling nitrate sewage according to claim 2, it is characterised in that the water inlet and water outlet
When the electrical conductivity of mouth is consistent, electrical conductivity is 105~116 μ S/cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710683927.3A CN107445257A (en) | 2017-08-11 | 2017-08-11 | A kind of membrane capacitance deionization system and its method for handling nitrate sewage |
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| CN201710683927.3A CN107445257A (en) | 2017-08-11 | 2017-08-11 | A kind of membrane capacitance deionization system and its method for handling nitrate sewage |
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| CN107445257A true CN107445257A (en) | 2017-12-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112125379A (en) * | 2020-09-02 | 2020-12-25 | 大唐保定热电厂 | Electric capacity membrane adsorption structure suitable for steam power plant chemical waste water |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014198298A (en) * | 2013-03-29 | 2014-10-23 | 株式会社クラレ | Separation method of nitrate ions |
| CN106365274A (en) * | 2016-11-07 | 2017-02-01 | 沈阳艾柏瑞环境科技有限公司 | Technological device and technological method for carrying out desalting treatment on underground water by using electrically-driven ionic membrane |
| CN106587451A (en) * | 2016-12-19 | 2017-04-26 | 河海大学 | Deionized water all-in-one treatment method and device for water treatment of micro-polluted water source |
| CN106830227A (en) * | 2017-03-01 | 2017-06-13 | 河海大学 | The membrane capacitance deionizer and processing method of a kind of circular treatment |
-
2017
- 2017-08-11 CN CN201710683927.3A patent/CN107445257A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014198298A (en) * | 2013-03-29 | 2014-10-23 | 株式会社クラレ | Separation method of nitrate ions |
| CN106365274A (en) * | 2016-11-07 | 2017-02-01 | 沈阳艾柏瑞环境科技有限公司 | Technological device and technological method for carrying out desalting treatment on underground water by using electrically-driven ionic membrane |
| CN106587451A (en) * | 2016-12-19 | 2017-04-26 | 河海大学 | Deionized water all-in-one treatment method and device for water treatment of micro-polluted water source |
| CN106830227A (en) * | 2017-03-01 | 2017-06-13 | 河海大学 | The membrane capacitance deionizer and processing method of a kind of circular treatment |
Non-Patent Citations (1)
| Title |
|---|
| 谢炜平等: "《环境监测实训指导》", 30 April 2008, 中国环境科学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112125379A (en) * | 2020-09-02 | 2020-12-25 | 大唐保定热电厂 | Electric capacity membrane adsorption structure suitable for steam power plant chemical waste water |
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