CN203360079U - High-voltage capacitor adsorption desalting device - Google Patents

High-voltage capacitor adsorption desalting device Download PDF

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Publication number
CN203360079U
CN203360079U CN201320231350.XU CN201320231350U CN203360079U CN 203360079 U CN203360079 U CN 203360079U CN 201320231350 U CN201320231350 U CN 201320231350U CN 203360079 U CN203360079 U CN 203360079U
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China
Prior art keywords
plate
reaction chamber
membrane
detachable
side wall
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Expired - Fee Related
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CN201320231350.XU
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Chinese (zh)
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赵贤广
徐炎华
齐菲
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Nanjing Tech University
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Nanjing Tech University
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Abstract

The utility model relates to a high-voltage capacitance adsorption desalting device, which consists of a reaction chamber and an external power supply; the reaction chamber is sequentially arranged according to a first side wall, a first detachable plate, a movable plate, a second detachable plate and a second side wall and connected and fixed through an iron rod with threads, an anode plate and a cathode plate are respectively arranged at opposite positions, close to the first side wall and the second side wall, in the reaction chamber, metal screws are respectively arranged at the middle positions of the tops of the anode plate and the cathode plate and are respectively connected with an anode and a cathode of an external power supply, an anion membrane and a cation membrane are respectively arranged at opposite positions of the inner sides of the anode plate and the cathode plate, and an overcurrent channel is formed between the anion membrane and the cation membrane; the movable plate is provided with a water inlet and a water outlet; and performing insulation treatment on the surface of the electrode. The salt-containing wastewater is sent into the reactor, electrodes at two ends are connected with an external direct current power supply, and effluent flows out through a water outlet at the top. The utility model discloses an insulated electrode replaces traditional electrode to improve for this method can be operated under the high voltage.

Description

A kind of high-voltage capacitance absorption desalination plant
Technical field
The utility model relates to a kind of high-voltage capacitance absorption desalination plant, belongs to the technical field of saliferous special equipment for waste water treatment.
Background technology
Along with the quickening of China's modernization, the output of brine waste increases year by year, originates also more extensive.As industries such as the exploitation of printing and dyeing, agricultural chemicals, Chemical Manufacture, oil and natural gas, food-processings.Often contain high-enriched organics in these brine wastes, if directly adopt biological process to be processed, salts substances can enter biological process, to the microorganisms restraining effect, affects Biochemical Treatment, causes water outlet to be difficult to qualified discharge.
The methods such as industrial thin up commonly used, distillation, electro-adsorption, ion-exchange, ultrafiltration and reverse osmosis are carried out pre-treatment at present, and the waste water after making to process can directly carry out conventional biochemical treatment.But thin up has caused the waste of water purification resource; It is useless that the evaporation desalination can produce a large amount of danger; Electro-adsorption device complexity, operation inconvenience; There are the problems such as film pollution in ultrafiltration and reverse osmosis; Make wastewater treatment running cost very high, enterprise is difficult to bear.Seek efficient desalination method more economically and become a large focus.In recent years, a kind of emerging desalination technology---the electro-adsorption demineralization method is greatly developed.It has, and producing water ratio is high, low power consumption and other advantages.And desalination is functional; The production process green non-pollution, less demanding to influent quality, do not consume medicine during regeneration; Between electrode, runner is wide, is difficult for stopping up.Be mainly used in advanced treatment of wastewater and reuse on the current engineering of this technology.
Existing electric desalination plant, as CN202139094U, name is called a kind of electro-adsorption waste water desalination plant, and this installs by tank, and positive plate and negative plate form.Positive-negative electrode plate interval 0.5~2cm is evenly distributed in tank, and heating rod is set in tank.Effectively desalination is high and production cost is low, and core component is without special maintenance.But its electrode directly is placed in tank, impressed voltage is 0~3V, has limited desalting efficiency.As CN200943051Y, name is called a kind of electric desalination plant, and this device adopts multi-disc pellet electrode and barrier sheet, and pellet electrode is arranged in parallel, and between electrode, by barrier sheet, is separated, by being added in the direct current work at device two ends.There is the advantages such as simple in structure, energy-conservation, non-secondary pollution, working environment adaptability be strong.But its multi-disc electrode structure can cause head loss to increase, and solution flow rate is 0.05m/s~0.3m/s, and less should not be processed big yield waste water, and electrode surface is not made insulation processing.The mode that existing desalination plant all adopts electrode directly to contact with solution, impressed voltage is crossed conference and is caused water electrolysis reaction to occur, and increases energy consumption and electrode is caused to loss, and electrode life is short.The utility model, for the shortcoming of conventional capacitive adsorption method, adopts the electrode of processing through insulation to replace traditional electrode to be improved first, makes the method to move under high-voltage.This technology have not been reported at present.
Summary of the invention
The purpose of this utility model is in order to overcome in existing capacitive adsorption method because electrode directly contacts with solution, impressed voltage during higher than 1.6V solution electrolysis easily occurs, shortcomings such as it is high that electrode materials requires, and electrode life is short, the apparatus structure complexity and proposed a kind of high-voltage capacitance absorption desalination plant.
The technical solution of the utility model is: a kind of high-voltage capacitance absorption desalination plant is characterized in that being comprised of reaction chamber and external source, the rectangular parallelepiped that wherein reaction chamber is comprised of the first side wall 10A, the second sidewall 10B, active plate the 8, first detachable plate 7A and the second detachable plate 7B, wherein active plate 8 is placed in mid-way, the first detachable plate 7A is placed respectively in both sides, the second detachable plate 7B and the first side wall 10A, the second sidewall 10B, reaction chamber is according to sidewall the one 10A, the first detachable plate 7A, active plate 8, the second detachable plate 7B sequentially arranges and passes through the aperture 13 that screwed iron staff 5 arranges through opposite position and is connected with the second sidewall 10B, the two ends of iron staff 5 are fixing with supporting nut 6, reaction chamber inside arranges respectively positive plate 11 and negative plate 3 near the relative position of the first side wall 10A and the second sidewall 10B, positive plate 11 and negative plate 3 crown center positions are separately installed with the first metal screw 2A and the second metal screw 2B, with positive pole and the negative pole of external source, join respectively, positive plate 11 and the inboard relative position of negative plate 3 arrange respectively anionic membrane 12 and cationic membrane 4, form flow channels between anionic membrane 12 and cationic membrane 4, active plate 8 lower ends in the middle of reaction chamber are provided with water-in 9, upper end is provided with water outlet 1.
Reaction chamber is rectangular parallelepiped, and size dimension can design according to actual needs and regulate; Detachably.
Preferably the material of above-mentioned the first side wall 10A, the second sidewall 10B, active plate the 8, first detachable plate 7A and the second detachable plate 7B is synthetic glass; The first detachable plate 7A, the second detachable plate 7B and active plate 8 are the U font.The first detachable plate 7A, the second detachable plate 7B thickness are 0.5~5cm, and length and width can be selected as required, the quantity changeable, and preferentially select the little plate of the many thickness of quantity.
The water-in 9 of above-mentioned active plate 8 lower ends is provided with water outlet 1 with upper end and is connected with valve respectively.
Preferred described positive plate 11 and negative plate 3 are graphite electrode plate or stainless steel electrode plate, and electrode surface is processed through insulation; Process and adopt conventional method to process through insulation.Battery lead plate thickness is 1~5mm, and battery lead plate size and reaction chamber size are complementary.
Preferred described anionic membrane 12 and cationic membrane 4 are macromolecule membrane, have ion-selective permeability; Material is often polyphenylene oxide and modifier thereof, polyphenylene sulfide and modifier thereof, and membrane pore size is 4~6 μ m, and film thickness is 0.1~1mm; Between anionic membrane 12 and positive plate 11, between cationic membrane 4 and negative plate 3, the wide space of 1~6mm is all arranged.
Preferred described battery lead plate spacing is 0.8~15cm, and corresponding external source voltage swing is 20~65V.
Utilize above-mentioned high-voltage capacitance absorption desalination plant to carry out the technique of desalination, its concrete steps are: connect the external source positive pole to the first metal screw 2A on positive plate 11, negative pole is connected to the second metal screw 2B on negative plate 3, open the connected valve of water-in 9, by pump, brine waste is sent into to reaction chamber, open external source, adsorb except reactant salt, clean water after processing is flowed out and is collected by water outlet 1, adsorb the state that reaches capacity, stop into water, close external source, after the power positive cathode reversal connection is on the second metal screw 2B and the first metal screw 2A, opening power, use deionized water as water inlet, carry out back flushing.Preferred handled brine waste is the solution that concentration is 60~600mg/L; Often contain Li in solution +, Na +, NH 4+, K +, Rb +, Cs +, Ag +, Mg 2+, Zn 2+, Co 2+, Cd 2+, Ni 2+, Ca 2+, Sr 2+, Pb 2+,
Ba 2+、F -
CH 3cOO -, HCOO -, Cl -, SCN -, Br -, CrO -, NO -, I -, SO 4 2-, CO 3 2-, HCO 3 -, NO 3 -; Solution flow rate is at 0~100m/s; Interelectrode distance is 0.8~15cm; The voltage of external source is 20~65V.
Preferred described adsorption saturation time is 1~3h.Preferred described backwashing time is 5~30min.
Beneficial effect:
Adopt insulated electrode to replace traditional electrode to be improved, make the method to move under high-voltage.By the insulation processing of electrode, electrode is not directly contacted with solution.Can prevent that electrode is corroded, electrode life is long, to electrode materials, requires low; And do not have electric current, energy consumption is low.Constructional device is simple, and desalting efficiency is high, has good application prospect.
The accompanying drawing explanation
Fig. 1 is capacitive adsorption method desalination plant structural front view: wherein 1 is water outlet, and 2A is the first metal screw, and 2B is the second metal screw, 3 is negative plate, and 4 is cationic membrane, and 5 is threaded iron staff, 6 is nut, and 7A is the first detachable plate, and 7B is the first detachable plate, 8 is active plate, 9 is water outlet, and 10A is the first side wall, and 10B is the second sidewall, 11 is positive plate, and 12 is anionic membrane.
Fig. 2 is the apparatus structure side-view, i.e. the upper aperture distribution plan of demountable panel piece (7): 13 apertures that pass for threaded iron staff (5) wherein.
Embodiment
By the following description to embodiment; more contribute to public understanding the utility model; but specific embodiment that can't the applicant is given is considered as restriction of the present utility model, any to lose or the definition of technical characterictic is changed or to result do form but not substantial conversion all should be considered as the protection domain that the utility model limits.
Embodiment 1
As shown in Figure 1: adopting synthetic glass is the material as sidewall and each plate, whole device is rectangular structure, and the aperture 13 arranged through opposite position by screwed long iron staff 5 after reaction chamber sequentially arranges according to the first side wall 10A, the first detachable plate 7A, active plate the 8, second detachable plate 7B and the second sidewall 10B is connected (as Fig. 2); Between the first side wall 10A and the first detachable plate 7A, between the second detachable plate 7B and the second sidewall 10B, embed respectively anionic membrane 12 and cationic membrane 4, two ends are fixing with supporting nut 6, the size of zwitterion diaphragm is complementary with the reflection chamber, between anionic membrane 12 and cationic membrane 4, forms flow channels; Positive plate 11 and negative plate 3 are put into respectively near the relative position of the first side wall 10A and the second sidewall 10B in reaction chamber inside, positive plate 11 and negative plate 3 sizes are advisable can just put into reaction chamber, positive plate 11 and negative plate 3 crown center position decibels are equipped with the first metal screw (2A) and the second metal screw (2B), and the first metal screw (2A) and the second metal screw (2B) join with positive pole and the negative pole of external source respectively; The lower end of reaction chamber mid-way active plate 8 is provided with water-in (9) and middle upper end is provided with water outlet (1).
Embodiment 2
Apparatus structure is as embodiment 1, wherein battery lead plate is selected Graphite Electrodes, selecting size according to the reaction chamber size is the battery lead plate of 55mm * 80mm, battery lead plate thickness is 2mm, the battery lead plate spacing is 20mm, the zwitterion film adopts polyphenyl ether material, thickness is 0.5mm, membrane pore size is 4 μ m, between anionic membrane and positive plate, between cationic membrane and negative plate, space is 2mm, water-in and water outlet aperture are 5mm, small aperture is 3mm, adopt conductivitimeter to measure the salts solution specific conductivity, characterize strength of solution with conductivity value, preparation 500mg/L NaCl solution is as the simulation brine waste, add in reaction chamber, close intake-outlet, regulating voltage is 60V, carry out the Static Adsorption reaction, every 30min assaying reaction liquid specific conductivity, go out water concentration after processing 150min and be about 40mg/L, clearance reaches more than 90%.After processing 180min, electrode adsorption approaches state of saturation, stops absorption reaction, and the positive and negative electrode reversal connection of external source, on battery lead plate, is added to deionized water in reaction chamber, and electrode is cleaned, and backwashing time is 20min.
Embodiment 3
Structure is as embodiment 1, battery lead plate is selected stainless steel electrode, battery lead plate is of a size of 80mm * 100mm, the thickness of electrode is 5mm, the battery lead plate spacing is 30mm, the zwitterion film adopts polyphenyl thioether material, thickness is 0.8mm, membrane pore size is 6 μ m, and between anionic membrane and positive plate, between cationic membrane and negative plate, space is 5mm, water-in and water outlet aperture are 5mm, small aperture is 3mm, adopt conductivitimeter to measure the salts solution specific conductivity, with conductivity value, characterize strength of solution, adopting temperature is that 25 ℃, concentration are 80mg/LCaCl 2solution (conductivity value is about 200 μ S/cm) is as water inlet, by peristaltic pump, sent in reaction chamber, the regulator solution flow is 72m/s, voltage is 20V, every 15min determines the water conductivity value, during 30min, the water outlet conductivity value reaches minimum, during reaction 1h, stop carrying out back flushing into water, carry out the next stage processing after back flushing 10min, after 1h, water outlet conductivity is elevated to 170 μ S/cm left and right, what collection 1h was interior goes out water mixed liquid (concentration is about 40mg/L) as the water inlet reaction repeated, repeat back flushing, after twice processing, the water outlet conductivity Schwellenwert is about 20 μ S/cm, clearance can reach more than 90%.

Claims (5)

1. a high-voltage capacitance absorption desalination plant, is characterized in that being comprised of reaction chamber and external source, the rectangular parallelepiped that wherein reaction chamber is comprised of the first side wall (10A), the second sidewall (10B), active plate (8), the first detachable plate (7A) and the second detachable plate (7B), wherein active plate (8) is placed in mid-way, the first detachable plate (7A) is placed respectively in both sides, the second detachable plate (7B) and the first side wall (10A), the second sidewall (10B), reaction chamber is according to sidewall first (10A), the first detachable plate (7A), active plate (8), the second detachable plate (7B) and the second sidewall (10B) order is arranged and pass through the aperture (13) that screwed iron staff (5) passes the opposite position setting and is connected, the supporting nut for two ends (6) of iron staff (5) is fixing, reaction chamber inside arranges respectively positive plate (11) and negative plate (3) near the relative position of the first side wall (10A) and the second sidewall (10B), positive plate (11) and negative plate (3) crown center position are separately installed with the first metal screw (2A) and the second metal screw (2B), with positive pole and the negative pole of external source, join respectively, positive plate (11) and the inboard relative position of negative plate (3) arrange respectively anionic membrane (12) and cationic membrane (4), form flow channels between anionic membrane (12) and cationic membrane (4), active plate (8) lower end in the middle of reaction chamber is provided with water-in (9), upper end is provided with water outlet (1).
2. high-voltage capacitance absorption desalination plant according to claim 1, is characterized in that the described first detachable plate (7A), the second detachable plate (7B) and active plate (8) are the U font.
3. high-voltage capacitance absorption desalination plant according to claim 1, is characterized in that water-in (9) is connected with valve respectively with water outlet (1).
4. high-voltage capacitance absorption desalination plant according to claim 1, it is characterized in that described positive plate (11) and negative plate (3) are graphite electrode plate or stainless steel electrode plate, and electrode surface is processed through insulation.
5. high-voltage capacitance absorption desalination plant according to claim 1, is characterized in that described anionic membrane (12) and cationic membrane (4) are macromolecule membrane, has ion-selective permeability; Between anionic membrane (12) and positive plate (11), between cationic membrane (4) and negative plate (3), the wide space of 1~6mm is all arranged.
CN201320231350.XU 2013-04-28 2013-04-28 High-voltage capacitor adsorption desalting device Expired - Fee Related CN203360079U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103253745A (en) * 2013-04-28 2013-08-21 南京工业大学 High-voltage capacitor adsorption desalting device and technology
CN113307334A (en) * 2019-12-30 2021-08-27 江苏大学 Ionic sieve cathode for electrolytic cells for extracting lithium in aqueous solutions containing lithium

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103253745A (en) * 2013-04-28 2013-08-21 南京工业大学 High-voltage capacitor adsorption desalting device and technology
CN103253745B (en) * 2013-04-28 2014-09-03 南京工业大学 High-voltage capacitor adsorption desalting device and technology
CN113307334A (en) * 2019-12-30 2021-08-27 江苏大学 Ionic sieve cathode for electrolytic cells for extracting lithium in aqueous solutions containing lithium
CN113307334B (en) * 2019-12-30 2022-08-26 江苏大学 Ionic sieve cathode for electrolytic cells for extracting lithium in aqueous solutions containing lithium

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Granted publication date: 20131225

Termination date: 20140428