CN209065675U - A kind of multistage zero discharge treatment equipment of high slat-containing wastewater - Google Patents
A kind of multistage zero discharge treatment equipment of high slat-containing wastewater Download PDFInfo
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Abstract
The utility model relates to a kind of multistage zero discharge treatment equipment of high slat-containing wastewater, including highly dense pond, osmosis filtration pond, heat exchanger, variant-frequency vibration negative pressure inspissator, nanofiltration pond, evaporator group and centrifugal dehydration unit, water producing tank and bipolar membrane electrodialysis resolver.Highly dense pond, osmosis filtration pond, heat exchanger, variant-frequency vibration negative pressure inspissator, nanofiltration pond, evaporator group and centrifugal dehydration unit are sequentially connected in series, and osmosis filtration pond passes through the water producing tank being coupled in series and bipolar membrane electrodialysis resolver is connect with highly dense pond；And/or variant-frequency vibration negative pressure inspissator passes through the water producing tank being coupled in series and bipolar membrane electrodialysis resolver is connect with highly dense pond；Heat exchanger is connect with centrifugal dehydrator.Hydrone in waste liquid can improve the enrichment factor of waste liquid by variant-frequency vibration negative pressure inspissator negative pressure and vibration double action removal.The production water reuse alkaline and concentrate recirculation of generation continue to be concentrated, and realize zero-emission.
Description
Technical field
The utility model relates to the multistage zero discharge treatments of water-treatment technology field more particularly to a kind of high slat-containing wastewater to set
It is standby.
Background technique
Water process industry is the development in the 1970s with environmental protection and the new industry occurred, is to implement to hold
Continuous development strategy and the important measures for improving urban environment.With the quickening of China's process of industrialization, more and more industry are raw
Production field will generate high-salt wastewater, and how effectively to handle such waste water is a problem.It is most commonly high in high-salt wastewater
Villaumite waste water and high-sulfate waste water, main sources are as follows: seawater utilization, printing and dyeing, papermaking, pharmacy, marine products processing,
Dairy produce processing, chemical industry and pesticide etc..The processing of high-salt wastewater is the hot topic of water process at this stage, wherein if main
Topic has brine waste salt extraction and zero-emission.
For example, a kind of high-salt sewage processing system disclosed in the Chinese patent of Publication No. CN206886898U, including it is logical
The sequentially connected sedimentation basin of piping, solid-liquid separator, intermediate water tank, more medium filter, electrodialysis plant, water tank, acid
Change anaerobic pond, aerobic degradation pond, membrane bioreactor, sterilization pool and clear water reserviors, high-salt sewage to be precipitated after being discharged into sedimentation basin,
Solid after precipitating and separation respectively enters sludge-tank, and the high concentration salt water that dialysis goes out sucks water collection tank with high salt, and acidification is detested
Oxygen pond is connected to sludge-tank, and aerobic degradation pond is connected to sludge-tank, and the exit of sterilization pool is equipped with detection device.The utility model
A kind of high-salt sewage processing system discharges surrounding enviroment in conjunction with production for the predominant amount of the high-salt sewage of discharge
Actual conditions, design the system for meeting such sewage treatment, cost is lower, and utilization rate is higher, reaches by sewage treatment
Cost has been saved on the basis of the purpose of recycling, achievees the purpose that sustainable recycle.But above-mentioned apparatus is not set
The equipment of zero setting discharge, treated, and water is directly discharged in environment.
Summary of the invention
For the deficiencies of the prior art, the present invention provides a kind of multistage zero discharge treatment equipment of high slat-containing wastewater.Institute
Equipment is stated to include pretreatment unit, pliable cell, depth upgrading unit, divide salt unit and reuse unit, the pretreatment unit
Including highly dense pond；The pliable cell includes osmosis filtration pond；The depth upgrading unit includes heat exchanger and variant-frequency vibration
Negative pressure inspissator；Described point of salt unit includes nanofiltration pond, evaporator group and centrifugal dehydration unit；The reuse unit includes producing water
Case and bipolar membrane electrodialysis resolver；Wherein, the highly dense pond, the osmosis filtration pond, the heat exchanger, frequency conversion vibration
Dynamic negative pressure inspissator, the nanofiltration pond, the evaporator group and centrifugal dehydration unit are sequentially connected in series, so that the pre- place
Reason unit, the pliable cell, the depth upgrading unit and described salt unit is divided to be sequentially connected in series；The osmosis filtration
The water producing tank and bipolar membrane electrodialysis resolver connection have been coupled in series between pond and the highly dense pond；With/
Or the variant-frequency vibration negative pressure inspissator and the highly dense pond have been coupled in series the water producing tank and Bipolar Membrane electricity
Dialysis resolver；So that the pliable cell and/or the depth upgrading unit are single by reuse unit and the pretreatment
Member connection；The heat exchanger is connect with the centrifugal dehydration unit, so that depth upgrading unit is bi-directionally connected with salt unit is divided.
According to a kind of preferred embodiment, the variant-frequency vibration negative pressure inspissator includes variable-frequency motor；The variable-frequency electric
The output shaft of machine is fixed on the eccentric shaft that the focus intralamellar part and/or surface are set in a manner of deviateing focus plate center of gravity
It holds；The focus plate is connect by drive rod with the cavity for being built-in with film group；The film group divides the cavity to every upper cavity
And lower chamber；Wherein, the vacuum that the upper cavity is provided with the water inlet connecting with the heat exchanger, connect with vacuum generator
Mouth, the concentrated water spout being connect with the nanofiltration pond；The lower chamber is provided with the production mouth of a river connecting with the water producing tank.
According to a kind of preferred embodiment, the depth upgrading unit further includes that be set to the variant-frequency vibration negative pressure dense
Electrodialysis plant between contracting device and the nanofiltration pond；The electrodialysis plant passes through the water producing tank and the Bipolar Membrane electric osmose
Analyse resolver connection；The electrodialysis plant passes through the microorganism aerating filter being coupled in series and concentrated water surge tank and institute
State the connection of nanofiltration pond.
According to a kind of preferred embodiment, chelate resin is provided between the osmosis filtration pond and the heat exchanger
Bed.
According to a kind of preferred embodiment, the osmosis filtration pond includes middle pressure osmosis filtration pond, high pressure reverse osmosis
Permeation filtering pond and/or super-pressure osmosis filtration pond；Medium pressure osmosis filtration pond, high pressure osmosis filtration pond and/
Or super-pressure osmosis filtration pond is sequentially connected in series；Wherein, medium pressure osmosis filtration pond and the highly dense pond connect
It connects；Super-pressure osmosis filtration pond is connect with the chelate resin bed.
According to a kind of preferred embodiment, medium pressure osmosis filtration pond, high pressure osmosis filtration pond and/or
Super-pressure osmosis filtration pond is connect by the water producing tank with the bipolar membrane electrodialysis resolver respectively；Medium pressure
High-pressure pump is provided between osmosis filtration pond and high pressure osmosis filtration pond；High pressure osmosis filtration pond and described
Super-pressure osmosis filtration is provided with super-pressure pump between pond.
According to a kind of preferred embodiment, the pretreatment unit further includes being set to the highly dense pond and medium pressure
Ozone contact tank between osmosis filtration pond；The ozone contact tank passes through cartridge filter and medium pressure osmosis filtration
Pond connection；Medium lift pump is provided between the cartridge filter and medium pressure osmosis filtration pond.
According to a kind of preferred embodiment, the pretreatment unit further includes by heavy rear clear water reserviors and the highly dense pond
The batch-type sedimentation basin of connection.
According to a kind of preferred embodiment, the evaporator group includes the first evaporator and the second evaporator；Described
One evaporator and second evaporator are connect in form in parallel with nanofiltration pond；Wherein, first evaporator passes through first
Centrifugal dehydrator is connect with the heat exchanger and the first collection salt cellar respectively；Second evaporator passes through the second centrifugal dehydrator point
It is not connect with the heat exchanger and the second collection salt cellar.
According to a kind of preferred embodiment, the salt room of the bipolar membrane electrodialysis resolver passes through circulating pump and the production
Water tank is bi-directionally connected；The alkaline chamber of the bipolar membrane electrodialysis resolver is connect with the highly dense pond.
The utility model provides a kind of multistage zero discharge treatment equipment of high slat-containing wastewater, at least has the advantage that
(1) it is provided with variant-frequency vibration negative pressure inspissator, the hydrone in waste liquid can be gone by negative pressure and vibration double action
It removes, improves the enrichment factor of waste liquid；Variant-frequency vibration negative pressure inspissator is built-in with film group, under the driving of variable-frequency motor, the vibration of film group
Dynamic, hydrone can pass through under the action of vibration force, and remaining point of macromolecular, solid particle and impurity cannot pass through；Due to
Variable-frequency motor has frequency conversion effect, and film group is provided with vibration acceleration, vibration velocity and variable amplitude, improves concentrated effect；
Variant-frequency vibration negative pressure inspissator has vacuum port, since waste liquid passes through steam heat-exchanging, additionally it is possible to evaporate under subnormal ambient；
(2) biological aerated filter and ozone contact tank being arranged, can be effectively reduced the impurity such as organic matter, ammonia nitrogen to sub-prime salt
The influence of crystal purity；
(3) what is generated in equipment produces water by the effect of bipolar membrane electrodialysis resolver to alkaline, and alkali is as highly dense pond
Medicament reuse, this synergy can also be subtracted by not only realizing zero-emission；The concentrate recirculation generated in equipment is realized to upgrading unit
Sewage zero-discharge.
Detailed description of the invention
Fig. 1 is a kind of logic module signal of the multistage zero discharge treatment equipment of high slat-containing wastewater provided by the utility model
Figure；
Fig. 2 is that a kind of one kind of the multistage zero discharge treatment equipment of high slat-containing wastewater provided by the utility model is preferably patrolled
Collect module diagram；
Fig. 3 is a kind of variant-frequency vibration negative pressure of the multistage zero discharge treatment equipment of high slat-containing wastewater provided by the utility model
The structural schematic diagram of generator；With
Fig. 4 is a kind of unit module signal of the multistage zero discharge treatment equipment of high slat-containing wastewater provided by the utility model
Figure.
Reference signs list
1: 51: the first evaporator of pretreatment unit
2: 52: the first centrifugal dehydrator of pliable cell
3: depth upgrading unit 53: the first collects salt cellar
4: 54: the second evaporator of reuse unit
5: dividing salt unit 55: the second centrifugal dehydrator
10: batch-type sedimentation basin 56: the second collects salt cellar
11: highly dense pond 57: evaporator group
12: ozone contact tank 58: centrifugal dehydration unit
13: cartridge filter 301: vacuum port
20: middle pressure osmosis filtration pond 302: concentrated water spout
21: high pressure osmosis filtration pond 303: film group
22: super-pressure osmosis filtration pond 304: pressing plate
23: chelate resin bed 305: producing the mouth of a river
24: osmosis filtration pond 306: variable-frequency motor
30: variant-frequency vibration negative pressure inspissator 307: output shaft
31: electrodialysis plant 308: capacity eccentric bearing
32: microorganism aerating filter 309: focus plate
33: concentrated water surge tank 3010: support
34: heat exchanger 3011: lower chamber
40: water producing tank 3012: upper cavity
41: bipolar membrane electrodialysis resolver 3013: water inlet
50: nanofiltration pond 3014: drive rod
Specific embodiment
It is described in detail with reference to the accompanying drawing.
It in description of the invention, term " first ", " second ", " third " and is used for description purposes only, and should not be understood as
Indication or suggestion relative importance or the quantity for implicitly indicating indicated technical characteristic." first ", " are defined as a result,
Two ", " third " and feature can explicitly or implicitly include one or more of the features.In retouching for the utility model
In stating, the meaning of " plurality " is two or more, unless otherwise specifically defined.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " inside ", " inside " is that orientation based on the figure or position are closed
System, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
Specific orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.
In the present invention, term " removably " is bonding, key connection, threaded connection, pin connection, card
Connect, hingedly, one of clearance fit or transition fit.It for the ordinary skill in the art, can be according to specific
Situation understands the concrete meaning of above-mentioned term in the present invention.
Embodiment 1
As shown in figure 4, the present embodiment provides a kind of multistage zero discharge treatment equipment of high slat-containing wastewater, including pretreatment is single
Member 1, depth upgrading unit 3, divides salt unit 5 and reuse unit 4 at pliable cell 2.Pretreatment unit 1 includes highly dense pond 11.Softening
Unit includes osmosis filtration pond 24.Depth upgrading unit 3 includes heat exchanger 34 and variant-frequency vibration negative pressure inspissator 30.Divide salt list
Member 5 includes nanofiltration pond 50, evaporator group 57 and centrifugal dehydration unit 58.Reuse unit 4 includes water producing tank 40 and Bipolar Membrane electric osmose
Analyse resolver 41.
As shown in Figure 1, highly dense pond 11, osmosis filtration pond 24, heat exchanger 34, variant-frequency vibration negative pressure inspissator 30, nanofiltration
Pond 50, evaporator group 57 and centrifugal dehydration unit 58 are sequentially connected in series, so that pretreatment unit 1, pliable cell 2, depth
Upgrading unit 3 and salt unit 5 is divided to be sequentially connected in series.With shape of connecting between the osmosis filtration pond 24 and the highly dense pond 11
Formula is connected with the water producing tank 40 and the bipolar membrane electrodialysis resolver 41.And/or the variant-frequency vibration negative pressure inspissator 30
The water producing tank 40 and the bipolar membrane electrodialysis resolver 41 have been coupled in series with the highly dense pond 11.So that soft
Change unit 2 and/or depth upgrading unit 3 to connect by reuse unit 4 with pretreatment unit 1.Heat exchanger 34 and centrifugal dehydrator
58 connections, so that depth upgrading unit 3 is bi-directionally connected with salt unit 5 is divided.
Preferably, as shown in figure 3, variant-frequency vibration negative pressure inspissator 30 includes variable-frequency motor 306.Variable-frequency motor 306 it is defeated
Shaft 307 is fixed on the capacity eccentric bearing that 309 inside of focus plate and/or surface are set in a manner of deviateing 309 center of gravity of focus plate
308.Focus plate 309 is connect by drive rod 3014 with the cavity for being built-in with film group 303.Film group 303 divides cavity to every epicoele
Body 3012 and lower chamber 3011.Specifically, capacity eccentric bearing 308 is fixed on inside focus plate 309 in the form of welding.Output shaft
307 are connect in the form of interference fit with capacity eccentric bearing 308.Focus plate is fixed in the form welded in one end of drive rod 3014
On 309.The other end of drive rod 3014 is fixed on pressing plate 304 in the form welded.Pressing plate 304 is fixed on cavity with welding form
Lower end.Film group 303 includes at least one diaphragm for being provided with several through-holes, and diaphragm arranges in an array manner and with washer point
Every.Specifically, film group 303 includes 1 diaphragm for being provided with several through-holes.Film group 303 can also include 2,3 or more
It is provided with the diaphragm of several through-holes (membrane material is aromatic polyamide composite material).Variable-frequency motor 306 is fixed on by stud
The bracket being connect with the earth.306 model of variable-frequency motor can be YTSP and QABP series.Specifically, variable-frequency motor 306 model
Model is YTSP400L2-4.309 bottom of focus plate is fixed with support 3010 with welding form.
Preferably, as shown in figure 3, upper cavity 3012 is provided with the water inlet 3013 connecting with heat exchanger 34, sends out with vacuum
The vacuum port 301 of raw device connection, the concentrated water spout 302 being connect with nanofiltration pond 50.Lower chamber is provided with the production connecting with water producing tank 40
The mouth of a river 305.Specifically, water inlet 3013, vacuum port 301, concentrated water spout 302, the production mouth of a river 305 are that chamber is fixed in the form of expanded joint
Body.For another example, water inlet 3013, vacuum port 301, concentrated water spout 302, the production mouth of a river 305 can also be fixed on cavity in the form of welding.
Vacuum generator is vacuum pump.
Preferably, as shown in Fig. 2, depth upgrading unit 3 further includes being set to variant-frequency vibration negative pressure inspissator 30 and nanofiltration
Electrodialysis plant 31 between pond 50.Electrodialysis plant 31 is connect by water producing tank 40 with bipolar membrane electrodialysis resolver 41.Electricity
Electrodialysis apparatus 31 passes through the microorganism aerating filter 32 being coupled in series and concentrated water surge tank 33 is connect with nanofiltration pond 50.Electricity
Electrodialysis apparatus 31 is penetrated using yin, yang electric drive film to the selection of anions and canons in solution under the action of DC electric field
Property filtering, so that a kind of physical and chemical process for being separated from each other solute in solution and water, is further concentrated concentrated water.Nanofiltration
50 main component of pond is nanofiltration membrane component, and nanofiltration membrane including components therein is to allow solvent molecule or low point certain in nanofiltration pond 50
A kind of functional semi-permeable membrane that son amount solute or low price ion penetrate.According to this feature, by the ion isolation in concentrated water, with
Obtain sub-prime salt.A kind of water that microorganism aerating filter 32 is removed water pollutant using solid interface fixation of microbe
Processing technique, mechanism are to organically combine biological contact oxidation process and water supply rapid filter, by biodegrade and are adsorbed
It filters two kinds for the treatment of processes to merge in same unitary reactor, with particulate filler (such as haydite, coke, the quartz loaded in filter tank
Sand, active carbon etc.) it is carrier, it is aerated inside filter tank, filter material surface is made to grow a large amount of biomembranes.When sewage flows through,
Using the oxygenolysis of the active microorganism of biomembrane middle and high concentration appended on filtrate, give full play to biological generation of microorganism
It thanks, the physical absorption and retention and the interior classification along water (flow) direction food chain of reactor of bioflocculation, biomembrane and filler are caught
Food effect, completes the efficient removal of pollutant.
Preferably, as shown in Fig. 2, being provided with chelate resin bed 23 between osmosis filtration pond 24 and heat exchanger 34.Heat exchange
Device 34 can use one of lamella heat exchanger and tubular heat exchanger, for heating and softening the concentrated water in unit.Heat exchange
Medium uses the steam of high-grade (energy in high).It can be obtained by mechanical recompression technology in the height of steam.
Preferably, as shown in Fig. 2, osmosis filtration pond 24 includes middle pressure osmosis filtration pond 20, high pressure osmosis filtration
Pond 21 and/or super-pressure osmosis filtration pond 22.Middle pressure osmosis filtration pond 20, high pressure osmosis filtration pond 21 and/or superelevation
Pressure osmosis filtration pond 22 is sequentially connected in series.Wherein, middle pressure osmosis filtration pond 20 is connect with highly dense pond 11.Super-pressure reverse osmosis
Permeation filtering pond 22 is connect with chelate resin bed 23.Chelate resin bed 23 is built-in with chelating resin, for adsorbing the calcium and magnesium in concentrated water
Ion.Chelating resin can use LSC-500 alpha-amino phosphonate resin and LSC-100 amido carboxylic acid resin.
Preferably, as shown in Fig. 2, middle pressure osmosis filtration pond 20, high pressure osmosis filtration pond 21 and/or super-pressure reverse osmosis
Permeation filtering pond 22 is connect by water producing tank 40 with bipolar membrane electrodialysis resolver 41 respectively.Middle pressure osmosis filtration pond 20 and high pressure
High-pressure pump (output pressure 3.5Mpa~6Mpa) is provided between osmosis filtration pond 21.High pressure osmosis filtration pond 21 and superelevation
Pressure is provided with super-pressure pump (6Mpa~7.5Mpa) between osmosis filtration pond 22.
Preferably, specifically, extraordinary built in middle pressure osmosis filtration pond 20 that press mold element (GTR3- in antipollution is concentrated
8040F-65, width of flow path 65mil, 1mil=0.0254mm).Extraordinary concentration antipollution is high built in high pressure osmosis filtration pond 21
Press mold element (GTR4-8040F-65, width of flow path 65mil).The folded pipe of super-pressure DTR0 built in super-pressure osmosis filtration pond 22
Formula membrane component 7W101500 (width of flow path 6mm).Middle press mold element, high pressure membrane component and super-pressure membrane component are using membrane material
Aromatic polyamide composite material.
Preferably, as shown in Fig. 2, pretreatment unit 1 further includes being set to highly dense pond 11 and middle pressure osmosis filtration pond 20
Between ozone contact tank 12.Ozone contact tank 12 is connect by cartridge filter 13 with middle pressure osmosis filtration pond 20.Security personnel
Medium lift pump (2~3.5Mpa of output pressure) is provided between filter 13 and middle pressure osmosis filtration pond 20.Cartridge filter 13
It mainly include shell and filter core, filter core is built in shell.Filter core can be sintering chimney filter, the filter of fusion-jet type fiber
Core and honeycomb filter core.Preferably, filter core can use filtering accuracy for 5 microns of honeycomb filter core.Ozone contact tank 12 is smelly
Oxygen contact chamber 31 includes intake chamber and catalytic oxidation room, is provided between intake chamber and catalytic oxidation room and ozone contact tank inner wall
The deflector of connection.Wherein, catalytic oxidation room is by with air-dispersing pore structure and being provided with the flow for measuring ozone flow
The ozone transport conduit of meter is connect with ozone generator.Catalytic oxidation room in reaction tank has the ozone of ozone air-dispersing pore structure defeated
Pipeline is sent, ozone can enter catalytic oxidation room in the form of injection, and ozone comes into full contact with and reacts with organic matter.Ozone with have
Machine object reacts in three different ways: first is that general chemistry is reacted；Second is that generating peroxide；Third is that occur ozone decompose or
Generate ozonide.After harmful substance dimethylbenzene and ozone reaction, nontoxic water and carbon dioxide are generated.So-called ozone decomposes
Refer to that ozone is reacted with polar organic compound, is react on the position of the original double bond of organic compound,
The division of its molecule.Since the oxidizing force of ozone is extremely strong, it can not only sterilize, but also can remove the color and taste in water etc. and is organic
Object.
Preferably, as shown in Fig. 2, pretreatment unit 1 further includes the sequence batch being connect by heavy rear clear water reserviors with highly dense pond 11
Formula sedimentation basin 10.Batch-type sedimentation basin 10 includes at least one sedimentation basin, passes through concatenated mode or parallel connection between sedimentation basin
Mode in parallel connects after concatenated mode or series connection after mode or parallel connection.Preferably, the place to increase batch-type sedimentation basin 10
Reason ability is connected with parallel form between sedimentation basin.For another example, be improve batch-type sedimentation basin 10 processing quality, sedimentation basin it
Between be coupled in series.For another example, be the processing capacity and quality for increasing batch-type sedimentation basin 10, between sedimentation basin with parallel connection after
Mode in parallel connects after concatenated mode or series connection.Batch-type sedimentation basin 10 includes a sedimentation basin.Batch-type sedimentation basin 10
It can also include 2,3 or more sedimentation basins.
Preferably, as shown in Fig. 2, evaporator group 57 includes the first evaporator 51 and the second evaporator 54.First evaporator
51 and second evaporator 54 connect in form in parallel with nanofiltration pond 50.Wherein, the first evaporator 51 passes through the first centrifugal dehydration
Machine 52 is connect with heat exchanger 34 and the first collection salt cellar 53 respectively.Second evaporator 54 by the second centrifugal dehydrator 55 respectively with change
Hot device 34 and the second collection salt cellar 56 connect.Specifically, the first evaporator 51 and the second evaporator 54 are preferably forced-circulation evaporation
Device.First centrifugal dehydrator 52 and the second centrifugal dehydrator 55 are preferably sedimentation-type centrifuge.For another example, the first evaporator 51 and
Two evaporators 54 can also be preferably falling film evaporator.First centrifugal dehydrator 52 and the second centrifugal dehydrator 55 can also be preferably
For perforated wall centrifuge.
Preferably, the salt room of bipolar membrane electrodialysis resolver 41 is bi-directionally connected by circulating pump with water producing tank 40.Bipolar Membrane
The alkaline chamber of electrodialysis resolver 41 is connect with highly dense pond 11.Specifically, bipolar membrane electrodialysis device 41 includes power supply unit and membrane stack
Unit.Membrane stack unit includes Bipolar Membrane, cavity block and anode membrane.Power supply unit includes positive plate, negative plate and direct current power box.Cavity block
Cavity between anode membrane constitutes salt room.Alkaline chamber is constituted between anode membrane and Bipolar Membrane.Pole water chamber is constituted between Bipolar Membrane and cavity wall.
After powered up, Bipolar Membrane two sides ionize out hydrogen ion and hydroxide ion, the cation permeable anode membrane in salt room, in alkaline chamber
Anion binding is discharged into highly dense pond 11 at alkali.Salt room in water producing tank 40 and bipolar membrane electrodialysis resolver 40 passes through circulating pump
It is bi-directionally connected.
It preferably, further include sludge condensation unit in the equipment, for handling batch-type sedimentation basin 10, producing in highly dense pond 11
Raw sludge.
Preferably, highly dense pond 11 includes preceding coagulating basin, flocculation basin, rear coagulating basin and clarifying basin.Preceding coagulating basin, flocculation basin,
Coagulating basin and clarifying basin are sequentially connected in series afterwards.Preceding coagulating basin is connect with heavy rear clear water reserviors.Clarifying basin and ozone contact tank 12 connect
It connects.Preceding coagulating basin, flocculation basin, rear coagulating basin and clarifying basin pass through sludge pipe and connect with sludge concentration tank.Preceding coagulating basin, flocculation
Pond, rear coagulating basin and clarifying basin are connect by killer injecting pump with injection pond.Medicament mainly include lime, sodium hydroxide, sodium carbonate,
PAC (Polyaluminium Chloride, aluminium polychloride) and PAM (Polyacrylamide, polyacrylamide).Killer injecting pump
For metering pump.
Working principle: high-salt wastewater enters in batch-type sedimentation basin 10, and after standing, clear water reserviors are discharged into highly dense after heavy
In pond 11.Preceding coagulating basin, flocculation basin, rear coagulating basin and the clarifying basin that highly dense pond 11 is arranged can be according to mixing, flocculation reaction, heavy
Different velocity gradient of forming sediment reaches good flocculating effect by adjusting the suitable hydraulics of mechanical stirring offer, and alumen ustum is raw
It is better than conventional mechanical at effect and accelerates sedimentation basin, for removes colloidal impurity, hardness, silicon and partial organic substances.Ozone contact
The biodegradability of sewage is improved, and COD (COD) can be reduced for the degradation to organic matter in pond 12.By pretreatment
The processing of unit 1, high-salt wastewater can reach the water inlet standard of pliable cell 2, and (turbidity is less than or equal to 1NTU, and COD is less than or equal to
50mg/L, total hardness are less than or equal to 600mg/L) after.Waste water enters before pliable cell 2, removes 5 microns through cartridge filter 13
Impurity more than partial size prevents the damage to reverse osmosis membrane.In pliable cell 2, pressure, high pressure and super-pressure three in waste water process
The reverse osmosis effect of grade, the concentrated water of generation are discharged into chelate resin bed 23.The production water of generation is emitted into water producing tank, as alkaline
Raw material realizes zero-emission.Chelate resin bed 23 has the electrostatic interaction of powerful absorbing calcium ions and magnesium ions, adsorbs calcium in concentrated water again
Magnesium ion.Through chelate resin bed 23, treated that waste water is discharged into heat exchanger 34, after being exchanged heat with steam, is discharged into variant-frequency vibration
In negative pressure inspissator 30.
Variant-frequency vibration negative pressure inspissator 30 is built-in with film group, and under the driving of variable-frequency motor 306, film group 303 starts to vibrate,
Hydrone can pass through under the action of vibration force, and remaining point of macromolecular, solid particle and impurity cannot pass through.Due to frequency conversion
Motor 306 has frequency conversion effect, and film group 303 is provided with vibration acceleration, vibration velocity and variable amplitude, improves concentration effect
Fruit.Variant-frequency vibration negative pressure inspissator 30 has vacuum port, since waste liquid passes through steam heat-exchanging, additionally it is possible to steam under subnormal ambient
Hair, the liquid of evaporation can be emitted into water producing tank 40 through condensation.Therefore, in variant-frequency vibration negative pressure inspissator 30, waste liquid
In hydrone can by negative pressure and vibration double action removal, improve the enrichment factor of waste liquid.
The concentrated water discharged through variant-frequency vibration negative pressure inspissator 30 can be through electrodialysis plant 31 further under electric field action
Concentration.After depth is concentrated, the TDS of concentrated water is 220550mg/L, fully meets a point salt requirement.
To reduce the influence of ammonia nitrogen impurity, organic matter to the purity of sub-prime salt, the concentrated water that electrodialysis plant 31 discharges is through exposing
It is discharged into after the biochemical treatment of gas biofilter 32 in nanofiltration pond 50.Concentrated water after depth is concentrated in nanofiltration pond 50 carries out a point salt, point
Concentrated water after salt obtains sub-prime salt crystal, the moisture that centrifugal dehydration unit 58 removes through evaporator group 57 and centrifugal dehydration unit 58
Into heat exchanger 34, zero-emission is realized.
It should be noted that above-mentioned specific embodiment is exemplary, those skilled in the art can disclose in the present invention
Various solutions are found out under the inspiration of content, and these solutions also belong to disclosure of the invention range and fall into this hair
Within bright protection scope.It will be understood by those skilled in the art that description of the invention and its attached drawing are illustrative and are not
Constitute limitations on claims.Protection scope of the present invention is defined by the claims and their equivalents.
Claims (10)
1. a kind of multistage zero discharge treatment equipment of high slat-containing wastewater, including pretreatment unit (1), pliable cell (2), depth are dense
Contracting unit (3) divides salt unit (5) and reuse unit (4), which is characterized in that
The pretreatment unit (1) includes highly dense pond (11)；The pliable cell includes osmosis filtration pond (24)；The depth
Upgrading unit (3) includes heat exchanger (34) and variant-frequency vibration negative pressure inspissator (30)；Described point of salt unit (5) includes nanofiltration pond
(50), evaporator group (57) and centrifugal dehydration unit (58)；The reuse unit (4) includes water producing tank (40) and Bipolar Membrane electric osmose
It analyses resolver (41)；
Wherein, the highly dense pond (11), the osmosis filtration pond (24), the heat exchanger (34), the variant-frequency vibration negative pressure
Inspissator (30), the nanofiltration pond (50), the evaporator group (57) and centrifugal dehydration unit (58) are sequentially connected in series, so that
The pretreatment unit (1), the pliable cell (2), the depth upgrading unit (3) and described divide salt unit (5) successively
It is connected in series；
Be coupled in series between the osmosis filtration pond (24) and the highly dense pond (11) water producing tank (40) and
The bipolar membrane electrodialysis resolver (41)；And/or the variant-frequency vibration negative pressure inspissator (30) and the highly dense pond (11) with
Cascade is connected with the water producing tank (40) and the bipolar membrane electrodialysis resolver (41)；So that the pliable cell
(2) and/or the depth upgrading unit (3) is connect by the reuse unit (4) with the pretreatment unit (1)；
The heat exchanger (34) connect with the centrifugal dehydration unit (58) so that the depth upgrading unit (3) with it is described
Salt unit (5) are divided to be bi-directionally connected.
2. the multistage zero discharge treatment equipment of high slat-containing wastewater as described in claim 1, which is characterized in that the variant-frequency vibration
Negative pressure inspissator (30) includes variable-frequency motor (306)；
The output shaft (307) of the variable-frequency motor (306) be fixed in a manner of deviateing focus plate (309) center of gravity be set to it is described
The capacity eccentric bearing (308) of focus plate (309) inside and/or surface；
The focus plate (309) is connect by drive rod (3014) with the cavity for being built-in with film group (303)；The film group (303)
By the cavity point every upper cavity (3012) and lower chamber (3011)；
Wherein, the upper cavity (3012) is provided with the water inlet (3013) connecting with the heat exchanger (34), occurs with vacuum
The vacuum port (301) of device connection and the concentrated water spout (302) being connect with the nanofiltration pond (50)；The lower chamber be provided with it is described
The production mouth of a river (305) of water producing tank (40) connection.
3. the multistage zero discharge treatment equipment of high slat-containing wastewater as claimed in claim 2, which is characterized in that the depth concentration
Unit (3) further includes the electrodialysis plant being set between the variant-frequency vibration negative pressure inspissator (30) and the nanofiltration pond (50)
(31)；
The electrodialysis plant (31) is connect by the water producing tank (40) with the bipolar membrane electrodialysis resolver (41)；It is described
Electrodialysis plant (31) passes through the microorganism aerating filter (32) being coupled in series and concentrated water surge tank (33) is received with described
Filter tank (50) connection.
4. the multistage zero discharge treatment equipment of high slat-containing wastewater as claimed in claim 3, which is characterized in that the reverse osmosis penetrates
Chelate resin bed (23) are provided between filter tank (24) and the heat exchanger (34).
5. the multistage zero discharge treatment equipment of high slat-containing wastewater as claimed in claim 4, which is characterized in that the reverse osmosis penetrates
Filter tank (24) includes middle pressure osmosis filtration pond (20), high pressure osmosis filtration pond (21) and/or super-pressure osmosis filtration pond
(22)；Medium pressure osmosis filtration pond (20), high pressure osmosis filtration pond (21) and/or the super-pressure reverse osmosis penetrate
Filter tank (22) is sequentially connected in series；Wherein,
Medium pressure osmosis filtration pond (20) is connect with the highly dense pond (11)；Super-pressure osmosis filtration pond (22) with
Chelate resin bed (23) connection.
6. the multistage zero discharge treatment equipment of high slat-containing wastewater as claimed in claim 5, which is characterized in that medium pressure reverse osmosis
Permeation filtering pond (20), high pressure osmosis filtration pond (21) and/or super-pressure osmosis filtration pond (22) pass through respectively
The water producing tank (40) connect with the bipolar membrane electrodialysis resolver (41)；
High-pressure pump is provided between medium pressure osmosis filtration pond (20) and high pressure osmosis filtration pond (21)；The height
Super-pressure pump is provided between pressure osmosis filtration pond (21) and super-pressure osmosis filtration pond (22).
7. the multistage zero discharge treatment equipment of high slat-containing wastewater as claimed in claim 6, which is characterized in that the pretreatment is single
First (1) further includes the ozone contact tank being set between the highly dense pond (11) and medium pressure osmosis filtration pond (20)
(12)；
The ozone contact tank (12) is connect by cartridge filter (13) with medium pressure osmosis filtration pond (20)；The guarantor
Medium lift pump is provided between peace filter (13) and medium pressure osmosis filtration pond (20).
8. the multistage zero discharge treatment equipment of high slat-containing wastewater as claimed in claim 7, which is characterized in that the pretreatment is single
First (1) further includes the batch-type sedimentation basin (10) being connect by heavy rear clear water reserviors with the highly dense pond (11).
9. the multistage zero discharge treatment equipment of high slat-containing wastewater as claimed in claim 8, which is characterized in that the evaporator group
It (57) include the first evaporator (51) and the second evaporator (54)；First evaporator (51) and second evaporator (54)
It is connect in form in parallel with nanofiltration pond (50)；Wherein,
First evaporator (51) collects salt cellar with the heat exchanger (34) and first respectively by the first centrifugal dehydrator (52)
(53) it connects；Second evaporator (54) is collected with the heat exchanger (34) and second respectively by the second centrifugal dehydrator (55)
Salt cellar (56) connection.
10. the multistage zero discharge treatment equipment of high slat-containing wastewater as claimed in claim 9, which is characterized in that the Bipolar Membrane
The salt room of electrodialysis resolver (41) is bi-directionally connected by circulating pump with the water producing tank (40)；The bipolar membrane electrodialysis parsing
The alkaline chamber of device (41) is connect with the highly dense pond (11).
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| CN201821505147.6U CN209065675U (en) | 2018-09-14 | 2018-09-14 | A kind of multistage zero discharge treatment equipment of high slat-containing wastewater |
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| CN201821505147.6U CN209065675U (en) | 2018-09-14 | 2018-09-14 | A kind of multistage zero discharge treatment equipment of high slat-containing wastewater |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2754898R1 (en) * | 2018-09-21 | 2020-04-27 | Suez Groupe | Zero liquid discharge treatment process to recover water from a contaminated liquid effluent for later reuse |
| CN114684999A (en) * | 2020-12-31 | 2022-07-01 | 中国石油化工股份有限公司 | Process for treating high-sulfate organic wastewater |
-
2018
- 2018-09-14 CN CN201821505147.6U patent/CN209065675U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2754898R1 (en) * | 2018-09-21 | 2020-04-27 | Suez Groupe | Zero liquid discharge treatment process to recover water from a contaminated liquid effluent for later reuse |
| CN114684999A (en) * | 2020-12-31 | 2022-07-01 | 中国石油化工股份有限公司 | Process for treating high-sulfate organic wastewater |
| CN114684999B (en) * | 2020-12-31 | 2023-02-07 | 中国石油化工股份有限公司 | Process for treating high-sulfate organic wastewater |
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