CN109534561A - A kind of processing method and its device of aluminium foil nitric acid chemical conversion technique waste water - Google Patents
A kind of processing method and its device of aluminium foil nitric acid chemical conversion technique waste water Download PDFInfo
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- CN109534561A CN109534561A CN201811612613.5A CN201811612613A CN109534561A CN 109534561 A CN109534561 A CN 109534561A CN 201811612613 A CN201811612613 A CN 201811612613A CN 109534561 A CN109534561 A CN 109534561A
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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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/20—Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
- C01B21/38—Nitric acid
- C01B21/46—Purification; Separation ; Stabilisation
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/48—Halides, with or without other cations besides aluminium
- C01F7/56—Chlorides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/48—Halides, with or without other cations besides aluminium
- C01F7/56—Chlorides
- C01F7/62—Purification
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/68—Aluminium compounds containing sulfur
- C01F7/74—Sulfates
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/68—Aluminium compounds containing sulfur
- C01F7/74—Sulfates
- C01F7/746—After-treatment, e.g. dehydration or stabilisation
- C01F7/748—Purification
-
- 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
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
Abstract
The present invention provides a kind of processing methods of aluminium foil nitric acid chemical conversion technique waste water, first pass around diffusion dialysis for the aluminium and acid progress initial gross separation, obtained recovery acid and raffinate in waste water；Raffinate and water are sent into the first electric dialyzator again, aluminium is carried out to separate with the depth of acid, recovery acid and aluminum nitrate solution are obtained, aluminum nitrate solution, hydrochloric acid or sulfuric acid, water are finally sent into the second electric dialyzator, aluminum nitrate is further converted into nitric acid and aluminium chloride or aluminum sulfate solution.The processing method provided by the present invention overcomes the deficiency in conventional method, reduces the investment of acid, reduces production cost, reasonable utilization resource simultaneously, and it is easy to operate, the processing of Waste Acid From Hua Cheng Foil waste water can be preferably solved, and there is good environmental benefit and economic benefit.
Description
Technical field
The present invention relates to the processing methods of aluminium foil nitric acid chemical conversion technique waste water, and in particular to a kind of to use diffusion dialysis and electricity
The method that dialysis handles aluminium foil nitric acid chemical conversion technique waste water.
Background technique
The main raw material(s) of Waste Acid From Hua Cheng Foil Factory is high-purity aluminium foil, is corroded and is melted into two procedures and obtains finished product.Corroding
In process, corrosive liquid is mainly strong acid, and under certain working condition, aluminium foil can be corroded and be melted into semi-finished product.This process is to corruption
It is more demanding to lose liquid concentration, needs constantly to add new liquid, the acid solution overflowed just becomes acid pickle.To containing in acid pickle
A large amount of acid, discharges if untreated, not only causes the wasting of resources, destruction can be also constituted to environment.Currently, this
There are mainly two types of methods for the processing of acid waste liquid, it may be assumed that lime neutralizes and evaporative crystallization.Both methods is more traditional, needs huge
Equipment investment, operating cost is higher, and general enterprises are difficult to bear, while can also generate secondary pollution.The presence of these problems, sternly
Important place hinders the sustainable development and technological progress of Waste Acid From Hua Cheng Foil industry, while can also constitute to the living environment of the mankind serious
It threatens.It is therefore desirable to developing a kind of save the cost, and environment amenable method solves aluminium foil chemical conversion industry waste water
Processing problem.
Summary of the invention
It is at low cost it is an object of the invention to overcome the deficiencies of the prior art and provide a kind of easy to operate, it works well
The processing method of aluminium foil nitric acid chemical conversion technique waste water.
In order to achieve the above-mentioned object of the invention, the processing method of aluminium foil chemical synthesis technology waste water provided by the invention, including it is following
Step:
(1) aluminium foil nitric acid chemical conversion technique waste water is passed through the dialysing compartment of diffusion dialyzer, while water is passed through diffusion dialyzer
Diffuser casing is nitric acid recovered liquid from diffuser casing outflow after diffusion dialysis, is containing the residual of aluminum nitrate from dialysing compartment outflow
Liquid；
(2) raffinate in step (1) is passed through to the diluting compartment of the first electric dialyzator comprising diluting compartment, enriched chamber and pole fluid chamber
In, while water being passed through to the enriched chamber of the first electric dialyzator, electrode solution is passed through pole fluid chamber, starting electric dialyzator work, from dense
The outflow of contracting room is nitric acid recovered liquid, is the desalination solution containing aluminum nitrate from diluting compartment outflow；
(3) desalination solution in step (2) is passed through to comprising the room feed liquid A, the room feed liquid B, the room product A, the room product B and pole fluid chamber
The room feed liquid A of two electric dialyzators, while by the aqueous solution or H of hydrogen chloride2SO4Aqueous solution be passed through the room feed liquid B, Jiang Shui is passed through production
Electrode solution is passed through pole fluid chamber by the room product A and the room product B, and starting electric dialyzator work is from the room feed liquid A and the outflow of the room feed liquid B
Water, from the room product A, outflow is liquor alumini chloridi or aluminum sulfate solution, and from the room product B, outflow is nitric acid recovered liquid.
The velocity ratio of aluminium foil nitric acid chemical conversion technique waste water and water is 1:1-1.5 in the step (1).
The flow velocity of the aluminium foil nitric acid chemical conversion technique waste water is 5-30ml/min.
In the step (2), the velocity ratio of raffinate and water is 1:1, and raffinate and water flow ratio are 1:1-15；The step
(3) in, the room feed liquid A, the room feed liquid B, the room product A are identical with the flow rate of liquid of the room product B, the body of the water of the room product A and the room product B
Product flow is 1-15 times of volume flow of desalination solution of the room feed liquid A, the volume flow phase of the liquid of the room feed liquid A and the room feed liquid B
Together, if flow through the room feed liquid B is the aqueous solution of hydrogen chloride, chloride ion in the hydrogen chloride and desalination solution in the aqueous solution of hydrogen chloride
Molar ratio be 3:1, if that flow through the room feed liquid B is H2SO4Aqueous solution, then H2SO4Aqueous solution in H2SO4In desalination solution
The molar ratio of chloride ion is 3:2.
In the step (2) and step (3), the current density of the electric dialyzator is controlled in 20-500A/m2Electric current electricity
Pressure.
Electrode solution used in the step (2) and step (3) is the sulfuric acid solution that concentration is 0.5-2%.
The present invention, which may also include, collects above-mentioned steps (1) nitric acid recovered liquid into step (3), in collection step (3)
The step of from the room feed liquid A and feed liquid B room outflow water and from the liquor alumini chloridi or aluminum sulfate solution of the room product A outflow.It collects
Nitric acid recovered liquid can it is concentrated or with concentrated nitric acid allotment after using, the water of collection can be utilized further, the chlorination of collection
Aluminum solutions or aluminum sulfate solution can be used as product sale.
The present invention is realized by diffusion dialyzer and carries out the nitric acid and aluminum nitrate that aluminium foil nitric acid is melted into technique waste water just
Step separation, under the driving of concentration difference, due to the selective penetrated property of amberplex, the acid in waste water enters diffuser casing, waste water
In aluminium ion be then ion exchanged film and be trapped in dialysing compartment, diffusion dialysis principle obtains nitric acid and returns referring to Figure of description 1
Receive liquid and the raffinate containing aluminum nitrate, a small amount of nitric acid.Aluminum nitrate in raffinate and a small amount of nitric acid are carried out by the first electric dialyzator
Depth separation, DC electric field effect under, due to the selective penetrated property of amberplex, the nitric acid in raffinate enter enriched chamber,
Aluminium ion then stays in diluting compartment, obtains nitric acid recovered liquid and aluminum nitrate solution, separation principle is referring to Figure of description 2.Pass through
Aluminum nitrate solution is further converted into nitric acid using low price hydrochloric acid or sulfuric acid by the second electric dialyzator, and product chlorination can be made
Aluminum solutions or aluminum sulfate solution, transforming principle is referring to Figure of description 3.
The method of the invention handles aluminium foil nitric acid and is melted into technique waste water, easy to operate and low production cost to realize nitre
Acid recovery reuses, and can coproduction liquor alumini chloridi or aluminum sulfate solution, reasonable utilization resource, and can be preferable
It solves the problems, such as Waste Acid From Hua Cheng Foil spent acid, no waste water and waste discharge, there is good environmental benefit and economic benefit.
The present invention also provides a kind of wastewater treatment dresses of processing method for realizing above-mentioned aluminium foil nitric acid chemical conversion technique waste water
It sets, the wastewater treatment equipment includes the diffusion dialyzer comprising diffuser casing and dialysing compartment, comprising diluting compartment, enriched chamber and pole liquid
First electric dialyzator of room, the second electric dialyzator comprising the room feed liquid A, the room feed liquid B, the room product A, the room product B and pole fluid chamber；Institute
The liquid outlet for stating the dialysing compartment of diffusion dialyzer is connected to the inlet of the diluting compartment of the first electric dialyzator, first electrodialysis
The liquid outlet of the diluting compartment of device is connected to the inlet of the room feed liquid A of the second electric dialyzator.
The diffusion dialyzer includes the anion-exchange membrane and partition between two end plates and clamping and two end plates, institute
It states partition to be located between end plate and anion-exchange membrane, forms dialysing compartment, anion between anion-exchange membrane and end plate
Diffuser casing is formed between exchange membrane and another end plate, dialysing compartment and diffuser casing are respectively provided with inlet and liquid outlet.
First electric dialyzator includes anode end plate equipped with electrode plate and cathode end plate and is clamped in anode end plate
Two panels cation-exchange membrane, a piece of anion-exchange membrane and four pieces of partitions between cathode end plate；A piece of cation-exchange membrane
Close to anode end plate setting, another cation-exchange membrane close to cathode end plate be arranged, anion-exchange membrane be located at two panels sun from
Between proton exchange, four pieces of partitions are respectively provided between cation-exchange membrane and anode end plate, cation-exchange membrane and cathode terminal
Between plate, between anion-exchange membrane and cation-exchange membrane；Between cation-exchange membrane and anode end plate and cation exchanges
Pole fluid chamber is respectively formed between film and cathode end plate, between anion-exchange membrane and the cation-exchange membrane of close cathode end plate setting
Diluting compartment is formed, forms enriched chamber between anion-exchange membrane and the cation-exchange membrane of close anode end plate setting；Pole fluid chamber,
Diluting compartment and enriched chamber are equipped with inlet and liquid outlet.
Second electric dialyzator includes anode end plate equipped with electrode plate and cathode end plate and is clamped in anode end plate
It is handed between cathode end plate and by anode end plate in the preceding anion that the posterior direction of preceding, cathode end plate is set gradually from front to back
Change film, preceding cation-exchange membrane, middle anion-exchange membrane, rear cation-exchange membrane, rear anion-exchange membrane；Preceding anion exchange
Between film and anode end plate, between preceding cation-exchange membrane and preceding anion-exchange membrane, middle anion-exchange membrane and preceding cation
Between exchange membrane, between rear cation-exchange membrane and middle anion-exchange membrane, rear anion-exchange membrane and rear cation-exchange membrane
Between and rear anion-exchange membrane and cathode end plate between be equipped with partition；Between preceding anion-exchange membrane and anode end plate and
Pole fluid chamber, shape between preceding cation-exchange membrane and preceding anion-exchange membrane are respectively formed between anion-exchange membrane and cathode end plate afterwards
At the room feed liquid A, the room product A, rear cation-exchange membrane and middle yin are formed between middle anion-exchange membrane and preceding cation-exchange membrane
It is formed between amberplex and forms the room product B between the room feed liquid B, rear anion-exchange membrane and rear cation-exchange membrane；It is described
Pole fluid chamber, the room feed liquid A, the room feed liquid B, the room product A and the room product B are equipped with inlet and liquid outlet.
Detailed description of the invention
Fig. 1 is diffusion dialysis schematic illustration；
Fig. 2 is the first electrodialysis schematic illustration；
Fig. 3 is the second electrodialysis schematic illustration；
Fig. 4 is the structural schematic diagram of wastewater treatment equipment.
Specific embodiment
To the essentiality content of invention, the present invention is further described With reference to embodiment, these embodiments
It is intended merely to show technical concept and its exploitativeness of the invention in detail, is not limiting the scope of the invention, benefit
The equivalence replacement made with the technology of the present invention design and accommodation are still within protection scope of the present invention.
Wastewater treatment equipment provided by the invention is referring to Fig. 4, including diffusion dialyzer 1, the first electric dialyzator 2 and the second electricity
Dialyzer 3.
The diffusion dialyzer 1 include two end plates 10 and clamping two end plates 10 between anion-exchange membrane 11 and
Partition 12, the partition 12 are located between end plate 10 and anion-exchange membrane 11, anion-exchange membrane 11 and end plate 10 it
Between formed dialysing compartment 13, between anion-exchange membrane 11 and another end plate 10 formed diffuser casing 14, dialysing compartment and diffuser casing are respectively set
There are inlet and liquid outlet.
First electric dialyzator 2 includes anode end plate 22 equipped with electrode plate 21 and cathode end plate 23 and is clamped in sun
Two panels cation-exchange membrane 24, a piece of anion-exchange membrane 25 and four pieces of partitions 26 between extreme plate 22 and cathode end plate 23；
A piece of cation-exchange membrane is arranged close to anode end plate, another cation-exchange membrane is arranged close to cathode end plate, and anion is handed over
Film is changed between two panels cation-exchange membrane, four pieces of partitions are respectively provided between cation-exchange membrane and anode end plate, sun from
Between proton exchange and cathode end plate, between anion-exchange membrane and cation-exchange membrane；Cation-exchange membrane and anode end plate
Pole fluid chamber 27, anion-exchange membrane 25 and close cathode terminal are respectively formed between 22 and between cation-exchange membrane and cathode end plate 23
Diluting compartment 28 is formed between the cation-exchange membrane 24 that plate 23 is arranged, what anion-exchange membrane 25 and close anode end plate 22 were arranged
Enriched chamber 29 is formed between cation-exchange membrane；Pole fluid chamber, diluting compartment and enriched chamber are equipped with inlet and liquid outlet.
Second electric dialyzator 3 includes anode end plate 31 equipped with electrode plate 30 and cathode end plate 32 and is clamped in sun
It is successively set from front to back between extreme plate 31 and cathode end plate 32 and by anode end plate 31 in preceding, the posterior direction of cathode end plate 32
Preceding anion-exchange membrane 33, preceding cation-exchange membrane 34, middle anion-exchange membrane 35, rear cation-exchange membrane 36, the rear yin set
Amberplex 37；Between preceding anion-exchange membrane 33 and anode end plate 31, preceding cation-exchange membrane 34 and preceding anion exchange
Between film 33, between middle anion-exchange membrane 35 and preceding cation-exchange membrane 34, rear cation-exchange membrane 36 and middle anion hand over
It changes between film 35, between rear anion-exchange membrane 37 and rear cation-exchange membrane 36 and rear anion-exchange membrane 37 and cathode terminal
Partition 38 is equipped between plate 32；Between preceding anion-exchange membrane 33 and anode end plate 31 and rear anion-exchange membrane 37 and cathode
It is respectively formed pole fluid chamber 39 between end plate 32, forms the room feed liquid A 40 between preceding cation-exchange membrane 34 and preceding anion-exchange membrane 33,
Form the room product A 41 between middle anion-exchange membrane 35 and preceding cation-exchange membrane 34, rear cation-exchange membrane 36 and middle yin from
It is formed between proton exchange 35 and forms the room product B between the room feed liquid B 42, rear anion-exchange membrane 37 and rear cation-exchange membrane 36
43；The pole fluid chamber, the room feed liquid A, the room feed liquid B, the room product A and the room product B are equipped with inlet and liquid outlet.
The inlet of the diluting compartment 28 of the liquid outlet and the first electric dialyzator of the dialysing compartment 13 of the diffusion dialyzer 1 connects
Logical, the inlet of the room feed liquid A 40 of the liquid outlet and the second electric dialyzator of the diluting compartment 28 of first electric dialyzator is connected to.
The specific implementation process of the method for the invention is further illustrated by taking the waste plant of above structure as an example below.
Embodiment 1
Referring to attached drawing 4, aluminium foil nitric acid be melted into the processing method of technique waste water the following steps are included:
(1) at room temperature, the aluminium foil chemical synthesis technology waste water containing nitric acid and aluminum nitrate is passed through to the dialysing compartment 13 of diffusion dialyzer 1,
Water is passed through to the diffuser casing 14 of diffusion dialyzer 1 simultaneously, adjustings waste water flow velocity is 10ml/min, water flow velocity 12ml/min, from
Diffuser casing outflow is nitric acid recovered liquid, is the raffinate containing aluminum nitrate from the outflow of dialysing compartment 13；
(2) at room temperature, it will be passed through from the raffinate that dialysing compartment 13 flows out in the diluting compartment 28 of the first electric dialyzator, while water being passed through
In the enriched chamber 29 of first electric dialyzator, the sulfuric acid solution that concentration is 1% is passed through two sides pole fluid chamber 27, starts electric dialyzator work
Make, adjusting enriched chamber and diluting compartment flow velocity is 40 L/ h, and the flow of enriched chamber and the flow of diluting compartment are identical, two sides pole fluid chamber
Flow velocity is 20 L/h, current density 50A/m2, from enriched chamber 29, outflow is nitric acid recovered liquid, is from the outflow of diluting compartment 28
Desalination solution containing aluminum nitrate；
(3) at room temperature, the desalination solution containing aluminum nitrate flowed out from diluting compartment 28 is passed through to the room feed liquid A 40 of the second electric dialyzator,
Sulfuric acid solution is passed through the room feed liquid B 42 simultaneously, water is passed through the room product A 41 and the sulfuric acid solution of the room product B 43, concentration 1% is passed through two
Side pole liquid chamber 39；Start electric dialyzator work, adjusts the stream of the room feed liquid A 40, the room feed liquid B 42, the room product A 41 and the room product B 43
Speed be 40h/L, two sides pole fluid chamber flow velocity be 20h/L, current density 100A/m2, flow through the room feed liquid A 40 and the room feed liquid B 42
Liquid flow it is identical, flow through the H in the sulfuric acid solution of the room feed liquid B 422SO4Molarity and flow through the room feed liquid A 40
Desalination solution in aluminum nitrate it is molar than being 3:2, the flow for flowing through the water of the room product A 41 and the room product B 43 is
5 times of fluid flow in the room feed liquid A 40；It is water from the room feed liquid A 40 and the outflow of the room feed liquid B 42, from the room product A 41, outflow is
Aluminum sulfate solution, from the room product B 43, outflow is nitric acid recovered liquid.
Embodiment 2
Referring to attached drawing 4, aluminium foil nitric acid be melted into the processing method of technique waste water the following steps are included:
(1) at room temperature, the aluminium foil chemical synthesis technology waste water containing nitric acid and aluminum nitrate is passed through to the dialysing compartment 13 of diffusion dialyzer 1,
Water is passed through to the diffuser casing 14 of diffusion dialyzer 1 simultaneously, adjustings waste water flow velocity is 20ml/min, water flow velocity 30ml/min, from
Diffuser casing outflow is nitric acid recovered liquid, is the raffinate containing aluminum nitrate from the outflow of dialysing compartment 13；
(2) at room temperature, it will be passed through from the raffinate that dialysing compartment 13 flows out in the diluting compartment 28 of the first electric dialyzator, while water being passed through
In the enriched chamber 29 of first electric dialyzator, the sulfuric acid solution that concentration is 1% is passed through two sides pole fluid chamber 27, starts electric dialyzator work
Make, adjusting enriched chamber and diluting compartment flow velocity is 40 L/ h, and the flow of enriched chamber and the flow of diluting compartment are identical, two sides pole fluid chamber
Flow velocity is 20 L/h, current density 80A/m2, from enriched chamber 29, outflow is nitric acid recovered liquid, is from the outflow of diluting compartment 28
Desalination solution containing aluminum nitrate；
(3) at room temperature, the desalination solution containing aluminum nitrate flowed out from diluting compartment 28 is passed through to the room feed liquid A 40 of the second electric dialyzator,
Hydrochloric acid is passed through the room feed liquid B 42 simultaneously, water is passed through the room product A 41 and the sulfuric acid solution of the room product B 43, concentration 1% is passed through two side poles
Liquid chamber 39；Start electric dialyzator work, the flow velocity for adjusting the room feed liquid A 40, the room feed liquid B 42, the room product A 41 and the room product B 43 is equal
For 40h/L, two sides pole fluid chamber flow velocity be 20h/L, current density 80A/m2, flow through the liquid of the room feed liquid A 40 and the room feed liquid B 42
Flow it is identical, flow through the molarity of the HCL in the hydrochloric acid of the room feed liquid B 42 with flow through the room feed liquid A 40 desalination solution in
The molar ratio of aluminum nitrate is 3:1, and the flow for flowing through the water of the room product A 41 and the room product B 43 is in the room feed liquid A 40
10 times of fluid flow；It is water from the room feed liquid A 40 and the outflow of the room feed liquid B 42, from the room product A 41, outflow is that aluminium chloride is molten
Liquid, from the room product B 43, outflow is nitric acid recovered liquid.
Claims (10)
1. a kind of processing method of aluminium foil nitric acid chemical conversion technique waste water, it is characterised in that the following steps are included:
(1) aluminium foil nitric acid chemical conversion technique waste water is passed through the dialysing compartment of diffusion dialyzer, while water is passed through diffusion dialyzer
Diffuser casing is nitric acid recovered liquid from diffuser casing outflow after diffusion dialysis, is containing the residual of aluminum nitrate from dialysing compartment outflow
Liquid；
(2) raffinate in step (1) is passed through to the diluting compartment of the first electric dialyzator comprising diluting compartment, enriched chamber and pole fluid chamber
In, while water being passed through to the enriched chamber of the first electric dialyzator, electrode solution is passed through pole fluid chamber, starting electric dialyzator work, from dense
The outflow of contracting room is nitric acid recovered liquid, is the desalination solution containing aluminum nitrate from diluting compartment outflow；
(3) desalination solution in step (2) is passed through to comprising the room feed liquid A, the room feed liquid B, the room product A, the room product B and pole fluid chamber
The room feed liquid A of two electric dialyzators, while by the aqueous solution or H of hydrogen chloride2SO4Aqueous solution be passed through the room feed liquid B, Jiang Shui is passed through production
Electrode solution is passed through pole fluid chamber by the room product A and the room product B, and starting electric dialyzator work is from the room feed liquid A and the outflow of the room feed liquid B
Water, from the room product A, outflow is liquor alumini chloridi or aluminum sulfate solution, and from the room product B, outflow is nitric acid recovered liquid.
2. the processing method of aluminium foil nitric acid chemical conversion technique waste water as described in claim 1, it is characterised in that in the step (1)
It is 1:1-1.5 that aluminium foil nitric acid, which is melted into technique waste water and the velocity ratio of water,.
3. the processing method of the aluminium foil nitric acid chemical conversion technique waste water as claimed in claim 2, it is characterised in that the aluminium
The flow velocity that foil nitric acid is melted into technique waste water is 5-30ml/min.
4. the processing method of aluminium foil nitric acid chemical conversion technique waste water as described in claim 1, it is characterised in that the step (2)
In, the velocity ratio of raffinate and water is 1:1, and raffinate and water flow ratio are 1:1-15；In the step (3), the room feed liquid A, feed liquid B
Room, the room product A are identical with the flow rate of liquid of the room product B, and the volume flow of the water of the room product A and the room product B is the room feed liquid A
1-15 times of the volume flow of desalination solution, the room feed liquid A is identical with the volume flow of the liquid of the room feed liquid B, if flow through the room feed liquid B is
The aqueous solution of hydrogen chloride, then the molar ratio of chloride ion is 3:1 in the hydrogen chloride in the aqueous solution of hydrogen chloride and desalination solution, if flowing through
The room feed liquid B is H2SO4Aqueous solution, then H2SO4Aqueous solution in H2SO4Molar ratio with chloride ion in desalination solution is 3:2.
5. the processing method of aluminium foil nitric acid as described in claim 1 chemical conversion technique waste water, it is characterised in that the step (2) and
In step (3), the current density of the electric dialyzator is controlled in 20-500A/m2Current Voltage.
6. the processing method of aluminium foil nitric acid as described in claim 1 chemical conversion technique waste water, it is characterised in that the step (2) and
Electrode solution used in step (3) is the sulfuric acid solution that concentration is 0.5-2%.
7. a kind of realize the processing method of the chemical conversion of aluminium foil nitric acid described in any claim technique waste water in claim 1-6
Wastewater treatment equipment, it is characterised in that wastewater treatment equipment includes the diffusion dialyzer comprising diffuser casing and dialysing compartment, comprising light
Change the first electric dialyzator of room, enriched chamber and pole fluid chamber, include the room feed liquid A, the room feed liquid B, the room product A, the room product B and pole fluid chamber
The second electric dialyzator；The inlet of the diluting compartment of the liquid outlet of the dialysing compartment of the diffusion dialyzer and the first electric dialyzator connects
Logical, the inlet of the room feed liquid A of the liquid outlet and the second electric dialyzator of the diluting compartment of first electric dialyzator is connected to.
8. wastewater treatment equipment as claimed in claim 7, it is characterised in that the diffusion dialyzer includes two end plates and folder
The anion-exchange membrane and partition between two end plates are held, the partition is located between end plate and anion-exchange membrane, yin
Dialysing compartment is formed between amberplex and end plate, and diffuser casing, dialysing compartment are formed between anion-exchange membrane and another end plate
Inlet and liquid outlet are respectively provided with diffuser casing.
9. wastewater treatment equipment as claimed in claim 7, it is characterised in that first electric dialyzator includes being equipped with electrode plate
Anode end plate and cathode end plate and the two panels cation-exchange membrane being clamped between anode end plate and cathode end plate, a piece of yin
Amberplex and four pieces of partitions；A piece of cation-exchange membrane is arranged close to anode end plate, another cation-exchange membrane is close
Cathode end plate setting, for anion-exchange membrane between two panels cation-exchange membrane, four pieces of partitions are respectively provided at cationic exchange
Between film and anode end plate, between cation-exchange membrane and cathode end plate, between anion-exchange membrane and cation-exchange membrane；Sun
Pole fluid chamber, anion-exchange membrane are respectively formed between amberplex and anode end plate and between cation-exchange membrane and cathode end plate
Diluting compartment is formed between the cation-exchange membrane of close cathode end plate setting, anion-exchange membrane and close anode end plate are arranged
Cation-exchange membrane between form enriched chamber；Pole fluid chamber, diluting compartment and enriched chamber are equipped with inlet and liquid outlet.
10. wastewater treatment equipment as claimed in claim 7, it is characterised in that second electric dialyzator includes being equipped with electrode plate
Anode end plate and cathode end plate and be clamped between anode end plate and cathode end plate and by anode end plate in preceding, cathode end plate
Preceding anion-exchange membrane that posterior direction is set gradually from front to back, preceding cation-exchange membrane, middle anion-exchange membrane, rear sun
Amberplex, rear anion-exchange membrane；Between preceding anion-exchange membrane and anode end plate, preceding cation-exchange membrane and external genitalia from
Between proton exchange, between middle anion-exchange membrane and preceding cation-exchange membrane, rear cation-exchange membrane and middle anion exchange
It is all provided between film, between rear anion-exchange membrane and rear cation-exchange membrane and afterwards between anion-exchange membrane and cathode end plate
There is partition；Pole liquid is respectively formed between preceding anion-exchange membrane and anode end plate between rear anion-exchange membrane and cathode end plate
Room, forms the room feed liquid A between preceding cation-exchange membrane and preceding anion-exchange membrane, middle anion-exchange membrane is exchanged with preceding cation
The room product A is formed between film, and the room feed liquid B, rear anion exchange are formed between rear cation-exchange membrane and middle anion-exchange membrane
The room product B is formed between film and rear cation-exchange membrane；The pole fluid chamber, the room feed liquid A, the room feed liquid B, the room product A and the room product B
It is equipped with inlet and liquid outlet.
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| CN1516615A (en) * | 2001-06-18 | 2004-07-28 | Electrodialysis of multivalent metal salts | |
| US20060219574A1 (en) * | 2005-04-05 | 2006-10-05 | Rahman Sleem U | Integrated electrolytic-electrodialytic apparatus and process for recovering metals from metal ion-containing waste streams |
| CN103264995A (en) * | 2013-05-30 | 2013-08-28 | 山东天维膜技术有限公司 | Sulfuric acid recovery technique in process of producing cystine by adopting sulfuric acid method |
| CN103882431A (en) * | 2012-12-19 | 2014-06-25 | 温州大学 | Zero emission recovery treatment method and system for corrosion waste acid in aluminum foil industry |
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2018
- 2018-12-27 CN CN201811612613.5A patent/CN109534561A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1516615A (en) * | 2001-06-18 | 2004-07-28 | Electrodialysis of multivalent metal salts | |
| US20060219574A1 (en) * | 2005-04-05 | 2006-10-05 | Rahman Sleem U | Integrated electrolytic-electrodialytic apparatus and process for recovering metals from metal ion-containing waste streams |
| CN103882431A (en) * | 2012-12-19 | 2014-06-25 | 温州大学 | Zero emission recovery treatment method and system for corrosion waste acid in aluminum foil industry |
| CN103264995A (en) * | 2013-05-30 | 2013-08-28 | 山东天维膜技术有限公司 | Sulfuric acid recovery technique in process of producing cystine by adopting sulfuric acid method |
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