CN108218095A - The industrial wastewater treatment system of magnetic-coagulation-membrane capacitance deionization technology integration - Google Patents
The industrial wastewater treatment system of magnetic-coagulation-membrane capacitance deionization technology integration Download PDFInfo
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- CN108218095A CN108218095A CN201810167765.2A CN201810167765A CN108218095A CN 108218095 A CN108218095 A CN 108218095A CN 201810167765 A CN201810167765 A CN 201810167765A CN 108218095 A CN108218095 A CN 108218095A
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- magnetic
- membrane capacitance
- coagulation
- capacitance deionization
- deionization
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
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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
-
- 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
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
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- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
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- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention discloses the industrial wastewater treatment systems of magnetic-coagulation membrane capacitance deionization technology integration, including water inlet pipe, intake pump, magnetic-coagulation system, the first peristaltic pump, membrane capacitance deionization system, magnetic-coagulation system is connected by water inlet pipe with pending wastewater disposal basin, intake pump is arranged on water inlet pipe, and through magnetic-coagulation system, treated that liquid imports membrane capacitance deionization system under the action of the first peristaltic pump.The combination that the present invention passes through magnetic-coagulation and membrane capacitance deionization, suspended matter and organic matter are attached on the anion and cation exchange membrane and electrode of capacitor deionizing instrument in effectively preventing into water, so as to ensure that the desalting processing effect of membrane capacitance deionizer, it is easy to operate and realize effectively removing for water pollutant, have that low power consuming, fouling membrane rate be low, simple operation and other advantages.
Description
Technical field
The invention belongs to water-treatment technology field, the more particularly to work of magnetic-coagulation-membrane capacitance deionization technology integration
Industry waste water treatment system.
Background technology
Magnetic-coagulation sedimentation is the synchronous addition magnetic powder in common precipitation coagulation process, is allowed to and pollutant flocculates and ties
Integrator to strengthen coagulation, flocculated effect, makes the flco density bigger, more solid of generation, so as to reach high speed settling
Purpose.The residence time of entire technique is very short, therefore to most of pollutant including TP, the machine of anti-course of dissolution occurs
Rate is very small, and the magnetic powder and flocculant in addition added in system has good suction to bacterium, virus, oil and a variety of fine particles
Attached effect, therefore to the removal effect of the pollutant than being got well during traditional handicraft.Simultaneously because the performance of its high speed pellets, makes it
Compared with traditional handicraft, have many advantages, such as that speed is fast, efficient, floor space is small.
Membrane capacitance deionization technology is a kind of efficient, low energy consumption water technology, has very high removal to imitate in ion
Rate, but the anion and cation exchange membrane at membrane capacitance deionizer the two poles of the earth is easily contaminated, and film surface is blocked, cause water outlet salt
Phenomena such as degree raising, effluent quality is deteriorated.Oil in Sewage Water class, colloidal substance, humate, natural organic matter, bacterium, protein etc.
Easily cause amberplex seriously polluted.
Invention content
In order to solve the technical issues of above-mentioned background technology proposes, the present invention is intended to provide magnetic-coagulation-membrane capacitance deionization
The industrial wastewater treatment system of technology integration, suspended matter and organic matter attach to the moon of capacitor deionizing instrument in avoiding into water
On cation-exchange membrane and electrode.
In order to realize above-mentioned technical purpose, the technical scheme is that：
The industrial wastewater treatment system of a kind of magnetic-coagulation-membrane capacitance deionization technology integration, including water inlet pipe, water inlet
Pump, magnetic-coagulation system, the first peristaltic pump, membrane capacitance deionization system；Magnetic-coagulation system passes through water inlet pipe and pending wastewater disposal basin
Connection, intake pump are arranged on water inlet pipe；Through magnetic-coagulation system, treated that liquid imports film under the action of the first peristaltic pump
Capacitive deionization system.
Further, the magnetic-coagulation system includes coagulant dosage unit, flocculant concentration unit, magnetic-coagulation reaction
Pond, flocculation tank and sedimentation basin；The entrance of magnetic-coagulation reaction tank imports pending waste water, coagulant dosage list by water inlet pipe
Member puts into coagulant into magnetic-coagulation reaction tank and is reacted, and the liquid after reaction is imported flocculation tank, and flocculant is thrown
Unit is added to be reacted, and the liquid after reaction is imported sedimentation basin to flocculation tank input flocculant, is further sunk
It forms sediment, the supernatant liquor of sedimentation basin imports membrane capacitance deionization system under the action of the first peristaltic pump.
Further, the magnetic-coagulation system further includes return sludge pump, magnetic powder recovering device, magnetic powder and adds unit, remains
Remaining sludge pump and sludge pipe, the sludge under sedimentation basin precipitates import magnetic powder recovering device under returned sludge pumping action, detach
To recycling magnetic powder and excess sludge, the recycling magnetic powder adds unit by magnetic powder and puts into again in magnetic-coagulation reaction tank, and remains
Remaining sludge passes through sludge pipe discharge system under the action of residual sludge pump.
Further, the membrane capacitance deionization system includes clean solution tank, the second peristaltic pump, third peristaltic pump, the first film
Capacitive deionization component, the second membrane capacitance deionization, water outlet pump, conductivity measuring instrument and tank；Through magnetic-coagulation system
Treated, and liquid is imported in clean solution tank, and under the action of the second peristaltic pump, the liquid in clean solution tank imports the first membrane capacitance and goes
Salinity removal is carried out in deionization unit, through the first membrane capacitance deionization treated liquid again in the effect of third peristaltic pump
Under, it imports in the second membrane capacitance deionization and carries out secondary salinity removal, treated through the second membrane capacitance deionization
Liquid is imported under the action of water outlet pump in tank, the conductivity of liquid in conductivity measuring instrument detection tank.
Further, the first membrane capacitance deionization and the second membrane capacitance deionization use direct current constant current control
Molding formula is 0.2-3.5mA/cm in current density2Lower operation.
Further, the membrane capacitance deionization system further includes regeneration flow container, and memory contains flushing water；When in tank
When the conductivity of liquid rises or membrane capacitance deionization both end voltage is more than 1.2V, electrode adsorption ion reaches saturation,
Into regeneration stage, membrane capacitance is rinsed by membrane capacitance deionization two-plate reversal connection, and to regenerate the flushing water in flow container
The two-plate of deionization unit realizes ion desorption, this process uses direct current constant voltage control model, that is, controls membrane capacitance deionization
Component both end voltage carries out the regeneration of electrode for 1.2V, and regenerative process carries out to flushing water water outlet conductivity no longer changing,
Regeneration stage terminates.
Further, the first membrane capacitance deionization and the second membrane capacitance deionization are loaded using graphite flake
Active carbon fiber felt, be furnished with anions and canons exchange membrane on active carbon fiber felt surface.
The advantageous effect brought using above-mentioned technical proposal：
The present invention adds magnetic-coagulation device before membrane capacitance deionizer, forms group technology, is precipitated using magnetic-coagulation
The pollutants such as organic matter avoid Organic substance in water from being adsorbed on amberplex or electrode to reach, and improve membrane capacitance deionization
The desalting efficiency of component considerably increases the service life of device, so as to ensure the treatment effect of membrane capacitance deionization.
Description of the drawings
Fig. 1 is the system composition schematic diagram of the present invention.
Specific embodiment
Below with reference to attached drawing, technical scheme of the present invention is described in detail.
A kind of industrial wastewater treatment system of magnetic-coagulation-membrane capacitance deionization technology integration, as shown in Figure 1, including into
Water pipe 1, intake pump 2, magnetic-coagulation system, the first peristaltic pump 13, membrane capacitance deionization system；Magnetic-coagulation system passes through water inlet pipe 1
It is connected with pending wastewater disposal basin, intake pump 2 is arranged on water inlet pipe 1；It wriggles through magnetic-coagulation system treated liquid first
Membrane capacitance deionization system is imported under the action of pump 13.
Magnetic-coagulation system includes coagulant dosage unit 3, flocculant concentration unit 4, magnetic-coagulation reaction tank 5, flocculation reaction
Pond 6 and sedimentation basin 7；The entrance of magnetic-coagulation reaction tank 5 imports pending waste water by water inlet pipe 1, and coagulant dosage unit 3 is to magnetic
Coagulant is put into coagulation reaction tank 5 to be reacted, and the liquid after reaction is imported flocculation tank 6, flocculant concentration list
Member 4 puts into flocculant to flocculation tank 6 and is reacted, and the liquid after reaction is imported sedimentation basin 7, is further sunk
It forms sediment, the supernatant liquor of sedimentation basin 7 imports membrane capacitance deionization system under the action of the first peristaltic pump 13.
Magnetic-coagulation system further includes return sludge pump 8, magnetic powder recovering device 9, magnetic powder and adds unit 10, residual sludge pump 11
With sludge pipe 12, the lower sludge of the precipitation of sedimentation basin 7 importing magnetic powder recovering device 9 under the effect of return sludge pump 8, isolated time
Magnetic powder and excess sludge are received, the recycling magnetic powder adds unit 10 by magnetic powder and puts into magnetic-coagulation reaction tank 5 again, and remaining
Sludge passes through 12 discharge system of sludge pipe under the action of residual sludge pump 11.Magnetic powder recovering device 9 includes interconnected height
Fast cutter and magnetic separator, the sludge first enter back into magnetic separator after high-speed shearing machine is sheared, are detached through magnetic separator
Processing is recycled magnetic powder and excess sludge.
Membrane capacitance deionization system includes clean solution tank, the second peristaltic pump 14, third peristaltic pump 15, the first membrane capacitance deionization
Component 16, the second membrane capacitance deionization 17, water outlet pump 19, conductivity measuring instrument 20 and tank 21；Through magnetic-coagulation system
Treated, and liquid is imported in clean solution tank, and under the action of the second peristaltic pump 14, the liquid in clean solution tank imports the first membrane capacitance
Salinity removal is carried out in deionization 16, through the first membrane capacitance deionization 16 treated liquid again in third peristaltic pump
Under the action of 15, import in the second membrane capacitance deionization 17 and carry out secondary salinity removal, through the second membrane capacitance deionization group
Treated the liquid of part 17 is imported under the action of water outlet pump 19 in tank 21, and conductivity measuring instrument 20 is detected in tank 21
The conductivity of liquid.
First membrane capacitance deionization 16 and the second membrane capacitance deionization 17 use direct current constant current controlling mould
Formula is 0.2-3.5mA/cm in current density2Lower operation.Membrane capacitance deionization I realizes the salinity removal of 60%-75%,
Membrane capacitance deionization II realizes the salinity removal of 90%-95% in I water outlet of membrane capacitance deionization.
Membrane capacitance deionization system further includes regeneration flow container 18, and memory contains flushing water；When the electricity of liquid in tank 21
When conductance rises or membrane capacitance deionization both end voltage is more than 1.2V, electrode adsorption ion reaches saturation, into regeneration
Stage, by membrane capacitance deionization two-plate reversal connection, and to regenerate the raw water flushing membrane capacitive deionization component in flow container 18
Two-plate, realize ion desorption, this process uses direct current constant voltage control model, that is, controls membrane capacitance deionization both ends
Voltage carries out the regeneration of electrode for 1.2V, and regenerative process carries out to flushing water water outlet conductivity no longer changing, regeneration stage
Terminate.After the first use of flushing water in storage to regeneration flow container 18, continue on for the next regeneration period, recycled.
In the present embodiment, water inlet sewage quality parameter is：TOC be 6-8mg/L, main organic components be grease, nothing
Machine object ingredient be sodium chloride, conductivity 13-14mS/cm, 20 DEG C of water temperature.So set, simulate typical sanitary sewage
Water quality.
Membrane capacitance deionization contains 100 groups of electrodes, and membrane capacitance device is the active carbon fiber felt of graphite flake load,
It is 10 × 10cm per plate electrode area2, graphite flake is collector, and anions and canons exchange membrane is furnished on active carbon fiber felt surface,
First membrane capacitance deionization and the second membrane capacitance deionization are using direct current constant current controlling pattern, the first film electricity
It is 0.6mA/cm to hold deionization in current density2Lower operation, 8 minutes, water outlet conductivity 3-4mS/cm residence time, the
Two membrane capacitance deionizations are 0.25mA/cm in current density2Lower operation, 10 minutes residence times, water outlet conductivity is less than
0.5mS/cm。
In common deionization technology, such as ion-exchange, electroosmose process, hyperfiltration.There is very for these methods
More limitations, such as using hyperfiltration, system is very high to the pre-processing requirements of water, and water producing cost is high；Using ion-exchange, then
Raw soda acid is costly, and regeneration liquid waste is easy to cause environment secondary pollution, and systems operational requirement is high；Using electroosmose process, fortune
Easy fouling on cathode and anode film during row, so as to influence effluent quality.And membrane capacitance deionization technology have low energy consumption,
The advantages such as membrane fouling rate is low.
Oil in Sewage Water class, colloidal substance, humate, natural organic matter, bacterium, protein etc. easily cause amberplex
It is seriously polluted.The anion and cation exchange membrane at membrane capacitance deionizer the two poles of the earth is easily contaminated, and film surface blocks, and influences membrane capacitance and goes
The desalting efficiency of deionization unit.Organic matter etc. easily attaches to ion exchange film surface, can not only greatly shorten the use of device
Service life, but also can increase regenerated difficulty.Present invention process adds magnetic-coagulation sedimentation basin before membrane capacitance deionization,
Group technology is formed, using pollutants such as magnetic-coagulation precipitating organic matters, Organic substance in water is avoided to be adsorbed in ion exchange to reach
On film or electrode, so as to ensure the purpose of membrane capacitance deionization treatment effect.
Embodiment is merely illustrative of the invention's technical idea, it is impossible to protection scope of the present invention is limited with this, it is every according to
Technological thought proposed by the present invention, any change done on the basis of technical solution, each falls within the scope of the present invention.
Claims (7)
1. a kind of industrial wastewater treatment system of magnetic-coagulation-membrane capacitance deionization technology integration, it is characterised in that：Including water inlet
Manage (1), intake pump (2), magnetic-coagulation system, the first peristaltic pump (13), membrane capacitance deionization system；Magnetic-coagulation system passes through water inlet
Pipe (1) is connected with pending wastewater disposal basin, and intake pump (2) is arranged on water inlet pipe (1)；Through magnetic-coagulation system, treated that liquid exists
Membrane capacitance deionization system is imported under the action of first peristaltic pump (13).
2. the industrial wastewater treatment system of magnetic-coagulation-membrane capacitance deionization technology integration according to claim 1, feature
It is：The magnetic-coagulation system includes coagulant dosage unit (3), flocculant concentration unit (4), magnetic-coagulation reaction tank (5), wadding
Solidifying reaction tank (6) and sedimentation basin (7)；The entrance of magnetic-coagulation reaction tank (5) imports pending waste water, coagulation by water inlet pipe (1)
Agent adds unit (3) input coagulant into magnetic-coagulation reaction tank (5) and is reacted, and the liquid after reaction is imported flocculation instead
Ying Chi (6), flocculant concentration unit (4) are reacted, and the liquid after reaction is led to flocculation tank (6) input flocculant
Enter sedimentation basin (7), further precipitated, the supernatant liquor of sedimentation basin (7) imports film under the action of the first peristaltic pump (13)
Capacitive deionization system.
3. the industrial wastewater treatment system of magnetic-coagulation-membrane capacitance deionization technology integration according to claim 2, feature
It is：The magnetic-coagulation system further includes return sludge pump (8), magnetic powder recovering device (9), magnetic powder and adds unit (10), residue
Sludge pump (11) and sludge pipe (12), the sludge under sedimentation basin (7) precipitates import magnetic powder recycling under return sludge pump (8) effect
Device (9), isolated recycling magnetic powder and excess sludge, the recycling magnetic powder add unit (10) by magnetic powder and put into magnetic again
In coagulation reaction tank (5), and excess sludge passes through sludge pipe (12) discharge system under the action of residual sludge pump (11).
4. the industrial wastewater treatment system of magnetic-coagulation-membrane capacitance deionization technology integration according to claim 1, feature
It is：The membrane capacitance deionization system includes clean solution tank, the second peristaltic pump (14), third peristaltic pump (15), the first membrane capacitance
Deionization (16), the second membrane capacitance deionization (17), water outlet pump (19), conductivity measuring instrument (20) and tank
(21)；It is imported in clean solution tank through magnetic-coagulation system treated liquid, under the action of the second peristaltic pump (14), in clean solution tank
Liquid, which imports, carries out salinity removal in the first membrane capacitance deionization (16), handled through the first membrane capacitance deionization (16)
Liquid afterwards under the action of third peristaltic pump (15), imports and secondary salinity is carried out in the second membrane capacitance deionization (17) again
Removal, through the second membrane capacitance deionization (17), treated that liquid imports tank (21) under the action of water outlet pump (19)
In, the conductivity of liquid in conductivity measuring instrument (20) detection tank (21).
5. the industrial wastewater treatment system of magnetic-coagulation-membrane capacitance deionization technology integration according to claim 4, feature
It is：First membrane capacitance deionization (16) and the second membrane capacitance deionization (17) use direct current constant current controlling mould
Formula is 0.2-3.5mA/cm in current density2Lower operation.
6. the industrial wastewater treatment system of magnetic-coagulation-membrane capacitance deionization technology integration according to claim 5, feature
It is：The membrane capacitance deionization system further includes regeneration flow container (18), and memory contains flushing water；When liquid in tank (21)
Conductivity rise or membrane capacitance deionization both end voltage be more than 1.2V when, electrode adsorption ion reaches saturation, enter
Regeneration stage, by membrane capacitance deionization two-plate reversal connection, and with regenerate the raw water in flow container (18) rinse membrane capacitance go from
The two-plate of sub-component realizes ion desorption, this process uses direct current constant voltage control model, that is, controls membrane capacitance deionization group
Part both end voltage carries out the regeneration of electrode for 1.2V, and regenerative process carries out to flushing water water outlet conductivity no longer changing, then
The raw stage terminates.
7. the industrial wastewater treatment system of magnetic-coagulation-membrane capacitance deionization technology integration according to claim 4, feature
It is：The work that the first membrane capacitance deionization (16) and the second membrane capacitance deionization (17) are loaded using graphite flake
Property Carbon fibe felt, anions and canons exchange membrane is furnished on active carbon fiber felt surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810167765.2A CN108218095A (en) | 2018-02-28 | 2018-02-28 | The industrial wastewater treatment system of magnetic-coagulation-membrane capacitance deionization technology integration |
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| CN201810167765.2A CN108218095A (en) | 2018-02-28 | 2018-02-28 | The industrial wastewater treatment system of magnetic-coagulation-membrane capacitance deionization technology integration |
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Cited By (2)
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| CN109593956A (en) * | 2018-12-10 | 2019-04-09 | 核工业北京化工冶金研究院 | A kind of enriching apparatus and method of uranium solution |
| CN110526354A (en) * | 2019-08-27 | 2019-12-03 | 首创爱华(天津)市政环境工程有限公司 | A method of utilizing magnetic-coagulation technical treatment industrial wastewater |
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