CN209468255U - A kind of zero discharge treatment device of the desulfurization wastewater based on electric drive film - Google Patents
A kind of zero discharge treatment device of the desulfurization wastewater based on electric drive film Download PDFInfo
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- CN209468255U CN209468255U CN201821536265.3U CN201821536265U CN209468255U CN 209468255 U CN209468255 U CN 209468255U CN 201821536265 U CN201821536265 U CN 201821536265U CN 209468255 U CN209468255 U CN 209468255U
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Abstract
The utility model relates to a kind of zero discharge treatment devices of desulfurization wastewater based on electric drive film, including pretreatment unit, GTR minimizing unit, resin pliable cell and separation crystalline element.The anion-exchange membrane of first electric drive film device is univalent anion exchange membrane, the anion-exchange membrane of second electric drive film device is dianion exchange membrane, and the cation-exchange membrane of the first electric drive film device and the second electric drive film device is monovalent cation exchange membrane；The water inlet pipe of nanofiltration equipment is connected to the outlet pipe of resin pliable cell, the permeate outlet pipe of nanofiltration equipment is connect with the freshwater room water inlet pipe of the first electric drive film device, and the trapped fluid outlet pipe of nanofiltration equipment is connect with the freshwater room water inlet pipe of the second electric drive film device；The concentrated water room outlet pipe of first electric drive film device is connect with sodium chloride concentrated water case, and the concentrated water room outlet pipe of the second electric drive film device is connect with sodium sulphate concentrated water case.
Description
Technical field
The utility model relates at water treatment field more particularly to a kind of zero-emission of the desulfurization wastewater based on electric drive film
Manage device.
Background technique
Coal-burning power plant faces the pressure of wastewater zero discharge, although share of the desulfurization wastewater in coal-burning power plant's wastewater discharge
Very little, the desulfurization wastewater that general 2 × 600MW unit generates only has 20t/h, but desulfurization wastewater is seriously polluted, and salt content is high, it is extremely difficult to
Processing.The height of desulfurization waste water quality and the size of water are directly determined by all kinds of factors such as system process parameters, smoke components
It is fixed, there is biggish pollution.
The water quality characteristics of desulfurization wastewater: (1) desulfurization wastewater is weakly acidic；(2) suspension content is high, it was demonstrated that in desulfurization wastewater
Suspended matter be mainly to rush the hydroxide of ash particle, silica and iron, aluminium；(3) salinity is very high in desulfurization wastewater, mainly
Cation is sodium ion, and content is high, contains a large amount of S simultaneously2-、S2O3 2-、SO4 2-Anion；(4) chemical oxygen consumption (COC) is higher, takes off
Chemical oxygen consumption (COC) in sulphur waste water is different from common waste water, in desulfurization wastewater, forms the principal element of chemical oxygen consumption (COC) not
It is organic matter, but the inorganic matter dithionate of reduction-state；(5) it contents of many kinds of heavy metal ion and deposits.Since desulfurization water quality has
Certain special nature brings biggish difficulty to the processing of desulfurization wastewater, and all kinds of heavy metal ion seriously polluted
Environment more increases the processing difficulty of desulfurization wastewater.
For example, having disclosed a kind of reverse osmosis concentrated water and high slat-containing wastewater in Publication No. CN104355431A patent document
The equipment of efficient process recycling.After the equipment carries out primary filtration by two-stage vibration film, obtained fresh water is passed through reverse osmosis
Film carries out depth-type filtration purification, and the concentrated water that vibrating membrane is obtained by filtration then passes through evaporative crystallization and recycles salt.Although this patent contracts
Short treatment process, but can not effectively classify recycling to salt.
Utility model content
For the deficiencies of the prior art, the utility model provides a kind of zero-emission of desulfurization wastewater based on electric drive film
Processing unit may include pretreatment unit, GTR minimizing unit, resin pliable cell and separation crystalline element, wherein institute
The upstream that pretreatment unit is connected to the GTR minimizing unit is stated, the resin pliable cell is connected to the GTR minimizing
The downstream of unit, the separation crystalline element are connected to the downstream of the resin pliable cell；Wherein, the separation crystalline element
Including at least nanofiltration equipment, the first electric drive film device, the second electric drive film device, sodium sulphate concentrated water case, sodium chloride concentrated water case,
Sodium sulphate crystallizing evaporator and sodium chloride crystallizing evaporator；The anion-exchange membrane of the first electric drive film device is monovalence yin
Amberplex, the anion-exchange membrane of the second electric drive film device are dianion exchange membrane, and first electricity drives
The cation-exchange membrane of dynamic film device and the second electric drive film device is monovalent cation exchange membrane；The nanofiltration equipment
Water inlet pipe is connected to the outlet pipe of resin pliable cell, the permeate outlet pipe of the nanofiltration equipment and the first electric drive film
The freshwater room water inlet pipe of equipment connects, the fresh water of the trapped fluid outlet pipe of the nanofiltration equipment and the second electric drive film device
The connection of room water inlet pipe；The concentrated water room outlet pipe of the first electric drive film device is connect with the sodium chloride concentrated water case, and described
The concentrated water room outlet pipe of two electric drive film devices is connect with the sodium sulphate concentrated water case；The sodium chloride crystallizing evaporator is connected to
The downstream of the sodium chloride concentrated water case, the sodium sulphate crystallizing evaporator are connected to the downstream of the sodium sulphate concentrated water case.
According to a preferred embodiment, the freshwater room outlet pipe of the first electric drive film device and/or described second
The freshwater room outlet pipe of electric drive film device is connected to the water inlet pipe of the nanofiltration equipment by reflux line.
According to a preferred embodiment, the first electric drive film device and/or the second electric drive film device are
Electrodialysis plant, and the first electric drive film device and/or the second electric drive film device are according to the pressure of concentrated water room
Than the pressure of freshwater room, 0.15~0.35MPa high mode is arranged.
According to a preferred embodiment, the ion of the first electric drive film device and the second electric drive film device
The logarithm of exchange membrane is 5~10 pairs and is homogeneous ion-exchange membrane.
According to a preferred embodiment, the sodium chloride crystallizing evaporator and the sodium sulphate crystallizing evaporator include steaming
Send out device and crystallizer, the evaporator be natural-circulation evaporator, falling film evaporator, forced-circulation evaporator, single effect evaporator,
At least one of multi-effect evaporator, MVR evaporator and TVR evaporator.
According to a preferred embodiment, the crystallizer is Oslo crystallizer, DTB crystallizer, DP crystallizer and flash distillation
At least one of formula crystallizer.
According to a preferred embodiment, the pretreatment unit includes tubular type micro-filtration concentration case, is connected to the tubular type
The tubular type microfiltration equipment in micro-filtration concentration case downstream and the tubular type micro-filtration water producing tank for being connected to tubular type microfiltration equipment downstream.
According to a preferred embodiment, the GTR minimizing unit includes GTR4 equipment and is connected to the GTR4 and sets
The GTR4 concentrated water case in standby downstream, the GTR minimizing unit further includes the GTR4 water producing tank connecting with GTR4 equipment, wherein institute
Stating GTR4 equipment is high pressure reverse osmosis membrane equipment.
According to a preferred embodiment, the resin pliable cell includes weak acid resin equipment and is connected to the weak acid
The resin water producing tank in resin equipment downstream, wherein the weak acid resin equipment is weak acid bed.
According to a preferred embodiment, the water inlet pipe of the tubular type micro-filtration concentration case is connect with homogeneous water tank.
The utility model at least has following advantageous effects:
(1) the utility model passes through the cooperation of nanofiltration equipment and electric drive film device, first by the concentrated solution to high salinity
It obtains the metabisulfite solution (level-one metabisulfite solution) containing a small amount of sodium chloride solution and contains minimal amount of metabisulfite solution
Sodium chloride solution (first grade sodium chloride solution), then by first grade sodium chloride solution and level-one metabisulfite solution pass through respectively first electricity
Driving film device and the second electric drive film device separated and be concentrated with obtain the higher secondary chlorination sodium concentrated solution of concentration and
Second level sodium sulphate concentrated solution, respectively recycles sodium chloride and sodium sulphate with evaporator and crystallizer convenient for subsequent；
The fresh water outlet pipe of (2) first electric drive film devices and the second electric drive film device and the water inlet pipe of nanofiltration equipment connect
It is logical so that circulation in fresh water sodium chloride and sodium sulphate ingredient separate, sufficiently recycled the fresh water of electronic film freshwater room
In sodium chloride and sodium sulphate.
(3) the zero discharge treatment device of this desulfurization wastewater based on electric drive film, by homogeneous water tank, pretreatment unit,
After GTR minimizing unit, hardness, COD, colloid and the salt content of desulfurization wastewater are effectively reduced and can achieve fresh
Water or circulating cooling make-up water water quality requirement.
Detailed description of the invention
Fig. 1 is a kind of preferred each mould of the zero discharge treatment device of the desulfurization wastewater based on electric drive film of the utility model
Block connection relationship diagram；
Fig. 2 is a preferred embodiment of nanofiltration equipment, the first electric drive film device and the second electric drive film device
Structural schematic diagram；
Fig. 3 is the module connection relationship diagram of a preferred embodiment of pretreatment unit；
Fig. 4 is the module connection relationship diagram of a preferred embodiment of GTR minimizing unit；
Fig. 5 is the module connection relationship diagram of a preferred embodiment of resin pliable cell；With
Fig. 6 is the module connection relationship diagram for separating a preferred embodiment of crystalline element.
Reference signs list
1: homogeneous water tank 2: case is concentrated in tubular type micro-filtration
3: tubular type microfiltration equipment 4: tubular type micro-filtration water producing tank
5:GTR4 concentrated water case 6: weak acid resin equipment
7: resin water producing tank 8: nanofiltration equipment
9a: the first electric drive film device the 9b: the second electric drive film device
10a: sodium sulphate concentrated water case 10b: sodium chloride concentrated water case
11: sodium sulphate evaporator crystalliser 12: sodium chloride crystallizing evaporator
13:GTR4 water producing tank 14:GTR4 equipment
21: pretreatment unit 22:GTR minimizing unit
23: resin pliable cell 24: separation crystalline element
Specific embodiment
It 1,2,3,4,5 and 6 is described in detail with reference to the accompanying drawing.
According to a preferred embodiment, the utility model provides a kind of zero-emission of desulfurization wastewater based on electric drive film
Processing unit is put, may include pretreatment unit 21, GTR minimizing unit 22, resin pliable cell 23 and separation crystalline element
24.Wherein, pretreatment unit 21 can connect in the upstream of GTR minimizing unit 22, and resin pliable cell 23 can connect
The downstream of GTR minimizing unit 22, separation crystalline element 24 are connected to the downstream of resin pliable cell 23.Wherein, separation crystallization
Unit 24 may include nanofiltration equipment 8, the first electric drive film device 9a, the second electric drive film device 9b, sodium sulphate concentrated water case
10b, sodium chloride concentrated water case 10a, sodium sulphate crystallizing evaporator 11 and sodium chloride crystallizing evaporator 12.First electric drive film device 9a
Anion-exchange membrane be univalent anion exchange membrane, the anion-exchange membrane of the second electric drive film device 9b is dianion
Exchange membrane.The cation-exchange membrane of first electric drive film device 9a and the second electric drive film device 9b can be handed over for monovalent cation
Change film.The water inlet pipe of nanofiltration equipment 8 is connected to the outlet pipe of resin pliable cell 23, the permeate outlet pipe of nanofiltration equipment 8 with
The freshwater room water inlet pipe of first electric drive film device 9a connects, and the trapped fluid outlet pipe of nanofiltration equipment 8 is set with the second electric drive film
The freshwater room water inlet pipe of standby 9b connects.The concentrated water room outlet pipe of first electric drive film device 9a is connect with sodium chloride concentrated water case 10a,
The concentrated water room outlet pipe of second electric drive film device 9b is connect with sodium sulphate concentrated water case 10b.Sodium chloride crystallizing evaporator 12 connects
In the downstream of sodium chloride concentrated water case 10a.Sodium sulphate crystallizing evaporator 11 is connected to the downstream of sodium sulphate concentrated water case 10b.Preferably,
By taking Fig. 2 as an example, the nanofiltration equipment 8 can be composed in parallel by three high pressure rolling nanofiltration membrane components, multiple high pressure rolling nanofiltrations
Membrane module parallel connection can increase the flow of processing water.Preferably, pretreatment unit 21, GTR minimizing unit 22, resin softening are single
Booster pump or elevator pump can be set to convey waste liquid between member 23 and separation crystalline element 24.
Preferably, the utility model passes through the processing of nanofiltration equipment 8 and electric drive film device, first will be to the dense of high salinity
Solution obtains the metabisulfite solution containing a small amount of sodium chloride solution, i.e., level-one metabisulfite solution and contains minimal amount of sodium sulphate
The sodium chloride solution of solution, i.e. first grade sodium chloride solution, then first grade sodium chloride solution and level-one metabisulfite solution are passed through respectively
First electric drive film device 9a and the second electric drive film device 9b obtain the higher secondary chlorination sodium concentrated solution of concentration and second level sulphur
Sour sodium concentrated solution, the recycling convenient for subsequent evaporation device and crystallizer to sodium chloride and sodium sulphate, the first electric drive film device 9a and
The fresh water of second electric drive film device 9b come out flows back into nanofiltration equipment 8 again and is concentrated and is separated；By homogeneous water tank, in advance
After processing unit, GTR minimizing unit, hardness, COD, colloid and the salt content of desulfurization wastewater have obtained being effectively reduced and can
To reach fresh water or circulating cooling make-up water water quality requirement.
Preferably, the working principle of nanofiltration equipment 8 is: nanofiltration membrane is using southern (DONNAN) effect in road, so that film is to difference
The selective penetrated property of ion is different, and the charge density of various ionic electrolyte salts is different in high-salt concentrated water in addition, causes height
Writing that surpasses all the others formula nanofiltration membrane component is variant to the rejection of ion.Therefore, different in the multicomponent system containing different valence state ion
Ion it is also not identical by the ratio of high pressure rolling nanofiltration membrane component, to being divided into high saliferous industrial wastewater to be processed with chlorine
Changing sodium is the two kinds of concentrated waters advocated peace based on sodium sulphate.The rejection of the monovalent salt concentrated water of high pressure rolling nanofiltration membrane be 5%~
15%, the rejection of divalent salts concentrated water is 90%~99%.In the present invention, the trapped fluid outlet pipe of nanofiltration equipment 8 is
Metabisulfite solution and a small amount of sodium chloride solution, i.e. level-one metabisulfite solution, permeate outlet pipe is for sodium chloride solution and seldom
The metabisulfite solution of amount, that is, first grade sodium chloride solution.First grade sodium chloride solution and level-one metabisulfite solution respectively enter second later
Electric drive film device 9a and the separation of the second electric drive film device 9b further progress obtain the higher sodium chloride solution of concentration and sulphur
Acid sodium solution.
Preferably, the working principle of electric drive film device is: the concentrated water that TDS reaches 5% or more enters electric drive film device,
Under the action of DC electric field, filtered using selective penetrated property of the yin, yang electric drive film to anions and canons in solution, thus
A kind of physical and chemical process for being separated from each other solute and water in solution.Electric drive film device is mainly by-series yin, yang
Film is alternately arranged forms many small water chambers separated by film between two electrodes.When raw water enters these cells, straight
Under the action of galvanic electricity field, the ion in solution makees directional migration utilization.Cation is migrated to cathode direction, and anion is to anode side
To migration.But since electric drive film has selective penetrated property, as a result reduces some cell ion concentrations and become freshwater room, with
The adjacent cell of freshwater room then becomes concentrated water room because being enriched a large amount of ions.It is available light from freshwater room and concentrated water room difference
Two kinds of different classes of water quality such as water and concentrated water.So that the ion in raw water is separated and is concentrated, it is finally reached water quality
The effect of purification.In the present invention, the anion-exchange membrane of the first electric drive film device 9a can be handed over for univalent anion
Film is changed, the anion-exchange membrane of the second electric drive film device 9b can be dianion exchange membrane, and cation-exchange membrane can
To be all monovalent cation exchange membrane；Under the Selective Separation effect of exchange membrane, the first electric drive film device 9a concentrated water room is poly-
Collecting the salting liquid of monovalent cation and univalent anion composition, i.e. secondary chlorination sodium concentrated solution, freshwater room assembles fresh water solution, the
The salting liquid of monovalent cation and dianion composition is assembled in two electric drive film device 9b concentrated water rooms, i.e. second level sodium sulphate is dense molten
Liquid, freshwater room assemble fresh water solution.Secondary chlorination sodium concentrated solution and second level sodium sulphate concentrated solution are input into sodium chloride concentrated water case respectively
10a and sodium sulphate concentrated water case 10b are stored, subsequent to be evaporated and crystallize again；And the first electric drive film device 9a and second
The fresh water outlet pipe of electric drive film device 9b is connected to the water inlet pipe of nanofiltration equipment 8 so that again in fresh water sodium chloride and
Sodium sulphate ingredient is separated, and sodium chloride and sodium sulphate in fresh water have sufficiently been recycled.
According to a preferred embodiment, the freshwater room outlet pipe and/or the second electric drive of the first electric drive film device 9a
The freshwater room outlet pipe of film device 9b is connected to the water inlet pipe of nanofiltration equipment 8 by reflux line.
According to a preferred embodiment, the first electric drive film device 9a and/or the second electric drive film device 9b are electric osmose
Desorption device.First electric drive film device 9a and/or the second electric drive film device 9b according to the pressure ratio freshwater room of concentrated water room pressure
The mode of the high 0.15~0.35MPa of power is arranged.Preferably, the first electric drive film device 9a and the second electric drive film device 9b concentrated water
The pressure of room can or 0.3Mpa 0.15MPa higher than the pressure of freshwater room.
According to a preferred embodiment, the ion exchange of the first electric drive film device 9a and the second electric drive film device 9b
The logarithm of film is 5~10 pairs and is homogeneous ion-exchange membrane.By taking Fig. 2 as an example, the electricity of the first electric drive film device 9a and second is driven
The logarithm of the amberplex of dynamic film device 9b can be 5 pairs.
According to a preferred embodiment, sodium chloride crystallizing evaporator 12 and sodium sulphate crystallizing evaporator 11 may include steaming
Send out device and crystallizer.Evaporator can for natural-circulation evaporator, falling film evaporator, forced-circulation evaporator, single effect evaporator,
At least one of multi-effect evaporator, MVR evaporator and TVR evaporator.
According to a preferred embodiment, crystallizer can be Oslo crystallizer, DTB crystallizer, DP crystallizer and flash distillation
At least one of formula crystallizer.
According to a preferred embodiment, pretreatment unit 21 includes tubular type micro-filtration concentration case 2, to be connected to tubular type micro-filtration dense
The tubular type microfiltration equipment 3 in 2 downstream of contracting case and the tubular type micro-filtration water producing tank for being connected to 3 downstream of tubular type microfiltration equipment.Preferably, to scheme
For 1, it can be concentrated in case 2 in tubular type micro-filtration and sodium carbonate and sodium hydroxide is added.Pretreatment unit passes through physical-chemical reaction
Hardness is reduced, cooperates tubular type micro-filtration by way of cross-flow, COD, colloid, the suspended matter in waste water can be removed.
According to a preferred embodiment, GTR minimizing unit 22 may include GTR4 equipment 14 and be connected to GTR4 and set
The GTR4 concentrated water case in standby 14 downstreams.GTR minimizing unit can also include the GTR4 water producing tank 13 connecting with GTR4 equipment.Its
In, GTR4 equipment 14 is high pressure reverse osmosis membrane equipment.Preferably, GTR minimizing unit is led to using extraordinary anti-pollution reverse osmosis membrane
The rate of recovery and operating condition of optimization membranous system are crossed, realizes depth concentration.Wherein, GTR4 equipment 14 can be high pressure reverse osmosis membrane
Equipment.Preferably, the performance parameter of GTR4 equipment 14 may is that membrane area: 37m2；Water yield: 28~34m3/ d, salt rejection rate >
99.5%.
According to a preferred embodiment, resin pliable cell 23 includes weak acid resin equipment 6 and is connected to weak acid resin
The resin water producing tank 7 in 6 downstream of equipment, wherein weak acid resin equipment 6 is weak acid bed.Preferably, resin pliable cell is using weak
Acid resin exchanges bivalent ions characteristic, for further removal hardness, guarantees the steady of subsequent nano-filtration equipment 8 and electric drive film device
Fixed operation.
According to a preferred embodiment, the water inlet pipe of tubular type micro-filtration concentration case 2 is connect with homogeneous water tank 1.Preferably, to
The desulfurization wastewater of processing is introduced into homogeneous water tank 1, to storage of waste water surplus to be processed, supplement shortage in homogeneous water tank, makes
The inflow of follow-up equipment is uniform, so that reducing the inconsistency of sewage influences the impact of follow-up equipment.
In order to make it easy to understand, being given below at a kind of zero-emission of desulfurization wastewater based on electric drive film of the utility model
Manage the working principle of a preferred embodiment of device.
Desulfurization wastewater is introduced into homogeneous water tank 1, pretreatment unit 21 is entered under the action of elevator pump or booster pump, and can
Made so that sodium carbonate and sodium hydroxide is added in tubular type micro-filtration concentration case 2 to remove calcium ion, magnesium ion and bicarbonate ion
It is precipitated, and pretreatment unit 21 reduces hardness by physical-chemical reaction, cooperates tubular type micro-filtration by way of cross-flow, and removal is useless
COD, colloid, suspended matter in water；Then waste water enters GTR minimizing unit 22, and GTR minimizing unit is using extraordinary antipollution
Reverse osmosis membrane realizes depth concentration, by the high saliferous at concentrated water end after concentration by optimizing the rate of recovery and operating condition of membranous system
It measures concentrated solution and inputs resin pliable cell 23, and the solution TDS average value at clear water end is less than 400mg/L, meets fresh water or follows
The requirement of ring water moisturizing；
And after high salinity concentrated solution enters resin pliable cell 23, for further removal hardness, guarantee that subsequent nano-filtration is set
For 8 and the stable operation of electric drive film device；Subsequent high salinity concentrated solution enters nanofiltration equipment 8, the outlet pipe nanofiltration of concentrated water room
The trapped fluid outlet pipe of equipment 8 is metabisulfite solution and a small amount of sodium chloride solution, i.e. level-one metabisulfite solution, permeate water outlet
Pipe is sodium chloride solution and minimal amount of metabisulfite solution, i.e. first grade sodium chloride solution.First grade sodium chloride solution and level-one later
Metabisulfite solution respectively enters the first electric drive film device 9a and the second electric drive film device 9b, in the selectivity of amberplex
Under centrifugation, the salting liquid of monovalent cation and univalent anion composition is assembled in the first electric drive film device 9a concentrated water room, i.e.,
Secondary chlorination sodium concentrated solution, freshwater room assemble fresh water solution, the second electric drive film device 9b concentrated water room assemble monovalent cation and
The salting liquid of dianion composition, i.e. second level sodium sulphate concentrated solution, freshwater room assemble fresh water solution.Secondary chlorination sodium concentrated solution
It is input into sodium chloride concentrated water case 10a respectively with second level sodium sulphate concentrated solution and sodium sulphate concentrated water case 10b is stored, last second level chlorine
Change sodium concentrated solution to be evaporated and crystallize by sodium chloride crystallizing evaporator, second level sodium sulphate concentrated solution is evaporated by sodium sulphate to be tied
Brilliant device is evaporated and crystallizes, and is effectively recycled to sodium chloride and sodium sulphate, and the first electric drive film device 9a
It is connected to the fresh water outlet pipe of the second electric drive film device 9b with the water inlet pipe of nanofiltration equipment 8, so that circulation is to the chlorine in fresh water
Change sodium and sodium sulphate ingredient is separated, sufficiently recycles the sodium chloride and sodium sulphate in the fresh water of electronic film freshwater room.Finally
A part of water of desulfurization wastewater, which realizes, to be purified and recycles, and the sodium chloride and sodium sulphate concentrated solution to generation realize evaporation
It crystallizes and recycles, realize the treatment effect of the zero-emission of desulfurization wastewater.
It should be noted that above-mentioned specific embodiment is exemplary, those skilled in the art can be in the utility model
Various solutions are found out under the inspiration of disclosure, and these solutions also belong to the open scope of the utility model simultaneously
It falls within the protection scope of the utility model.It will be understood by those skilled in the art that the utility model specification and its attached drawing
It is illustrative and not constitutes limitations on claims.The protection scope of the utility model is by claim and its equivalent
It limits.
Claims (10)
1. a kind of zero discharge treatment device of the desulfurization wastewater based on electric drive film, which is characterized in that described to be based on electric drive film
The zero discharge treatment device of desulfurization wastewater to include at least pretreatment unit (21), GTR minimizing unit (22), resin softening single
First (23) and separation crystalline element (24), wherein the pretreatment unit (21) is connected to the GTR minimizing unit (22)
Upstream, the resin pliable cell (23) are connected to the downstream of the GTR minimizing unit (22), the separation crystalline element
(24) it is connected to the downstream of the resin pliable cell (23)；
Wherein, the separation crystalline element (24) includes at least nanofiltration equipment (8), the first electric drive film device (9a), the second electricity
Drive film device (9b), sodium sulphate concentrated water case (10b), sodium chloride concentrated water case (10a), sodium sulphate crystallizing evaporator (11) and chlorination
Sodium crystallizing evaporator (12)；
The anion-exchange membrane of the first electric drive film device (9a) is univalent anion exchange membrane, the second electric drive film
The anion-exchange membrane of equipment (9b) is dianion exchange membrane, the first electric drive film device (9a) and second electricity
The cation-exchange membrane for driving film device (9b) is monovalent cation exchange membrane；
The water inlet pipe of the nanofiltration equipment (8) is connected to the outlet pipe of resin pliable cell (23), the nanofiltration equipment (8) it is saturating
It crosses liquid outlet pipe to connect with the freshwater room water inlet pipe of the first electric drive film device (9a), the retention of the nanofiltration equipment (8)
Liquid outlet pipe is connect with the freshwater room water inlet pipe of the second electric drive film device (9b)；The first electric drive film device (9a)
Concentrated water room outlet pipe connect with the sodium chloride concentrated water case (10a), the concentrated water room of the second electric drive film device (9b) goes out
Water pipe is connect with the sodium sulphate concentrated water case (10b)；
The sodium chloride crystallizing evaporator (12) is connected to the downstream of the sodium chloride concentrated water case (10a), the sodium sulphate evaporation
Crystallizer (11) is connected to the downstream of the sodium sulphate concentrated water case (10b).
2. the zero discharge treatment device of the desulfurization wastewater as described in claim 1 based on electric drive film, which is characterized in that described
The freshwater room outlet pipe of first electric drive film device (9a) and/or the freshwater room outlet pipe of the second electric drive film device (9b)
The water inlet pipe of the nanofiltration equipment (8) is connected to by reflux line.
3. the zero discharge treatment device of the desulfurization wastewater as claimed in claim 2 based on electric drive film, which is characterized in that described
First electric drive film device (9a) and/or the second electric drive film device (9b) are electrodialysis plant, and described first is electric
Drive film device (9a) and/or the second electric drive film device (9b) high according to the pressure of the pressure ratio freshwater room of concentrated water room
The mode of 0.15~0.35MPa is arranged.
4. the zero discharge treatment device of the desulfurization wastewater as claimed in claim 3 based on electric drive film, which is characterized in that described
The logarithm of first electric drive film device (9a) and the amberplex of the second electric drive film device (9b) be 5~10 pairs and
For homogeneous ion-exchange membrane.
5. the zero discharge treatment device of the desulfurization wastewater according to claim 4 based on electric drive film, characterized in that described
Sodium chloride crystallizing evaporator (12) and the sodium sulphate crystallizing evaporator (11) include evaporator and crystallizer, and the evaporator is
Natural-circulation evaporator, falling film evaporator, forced-circulation evaporator, single effect evaporator, multi-effect evaporator, MVR evaporator and TVR
At least one of evaporator.
6. the zero discharge treatment device of the desulfurization wastewater according to claim 5 based on electric drive film, characterized in that described
Crystallizer is at least one of Oslo crystallizer, DTB crystallizer, DP crystallizer and Flash Type crystallizer.
7. the zero discharge treatment device of the desulfurization wastewater according to claim 6 based on electric drive film, characterized in that described
Pretreatment unit (21) includes tubular type micro-filtration concentration case (2), the tubular type micro-filtration for being connected to tubular type micro-filtration concentration case (2) downstream
Equipment (3) and the tubular type micro-filtration water producing tank for being connected to tubular type microfiltration equipment (3) downstream.
8. the zero discharge treatment device of the desulfurization wastewater according to claim 1 based on electric drive film, characterized in that described
GTR minimizing unit (22) includes GTR4 equipment (14) and the GTR4 concentrated water case for being connected to GTR4 equipment (14) downstream, institute
Stating GTR minimizing unit further includes the GTR4 water producing tank (13) connecting with GTR4 equipment, wherein the GTR4 equipment (14) is height
Press reverse osmosis membrane equipment.
9. the zero discharge treatment device of the desulfurization wastewater according to claim 1 based on electric drive film, characterized in that described
Resin pliable cell (23) includes weak acid resin equipment (6) and the resin production water for being connected to weak acid resin equipment (6) downstream
Case (7), wherein the weak acid resin equipment (6) is weak acid bed.
10. the zero discharge treatment device of the desulfurization wastewater according to claim 7 based on electric drive film, characterized in that institute
The water inlet pipe for stating tubular type micro-filtration concentration case (2) is connect with homogeneous water tank (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821536265.3U CN209468255U (en) | 2018-09-19 | 2018-09-19 | A kind of zero discharge treatment device of the desulfurization wastewater based on electric drive film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821536265.3U CN209468255U (en) | 2018-09-19 | 2018-09-19 | A kind of zero discharge treatment device of the desulfurization wastewater based on electric drive film |
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| CN209468255U true CN209468255U (en) | 2019-10-08 |
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| CN201821536265.3U Active CN209468255U (en) | 2018-09-19 | 2018-09-19 | A kind of zero discharge treatment device of the desulfurization wastewater based on electric drive film |
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2018
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