CN209193720U - A kind of waste water desalting processing device based on mesohigh special type concentration film - Google Patents

Abstract

The utility model relates to a kind of waste water desalting processing devices based on mesohigh special type concentration film, including at least pretreatment unit, pliable cell, reverse osmosis units, upgrading unit and crystalline element, pretreatment unit includes the homogeneous tank being sequentially connected in series, aeration tank, magnetic swirl-type filter and catalytic oxidizing equipment；Pliable cell is weak acid cation bed, reverse osmosis units include sequentially connected middle pressure reverse osmosis unit and high pressure reverse osmosis unit, upgrading unit includes sequentially connected nanofiltration device and electrically-driven ion switch, crystalline element includes at least sodium chloride crystallizer, nitre hot melt jar and freezing and crystallizing device, wherein, catalytic oxidizing equipment is connect by weak acid cation bed with middle pressure reverse osmosis unit, high pressure reverse osmosis unit is connect with nanofiltration device, electrically-driven ion switch is connect to obtain sodium chloride crystal with sodium chloride crystallizer, electrically-driven ion switch is connect with freezing and crystallizing device by nitre hot melt jar sodium sulfate crystal is precipitated, it realizes zero-emission and obtains regeneration fresh water.

Description

A kind of waste water desalting processing device based on mesohigh special type concentration film

Technical field

The utility model relates to water-treatment technology field more particularly to a kind of waste water based on mesohigh special type concentration film are de- Salt treatment device.

Background technique

With the continuous improvement of economic technology and living standard, people are also more next to the attention degree of stain disease treatment industry It is higher.For stain disease treatment process, the stain disease processing technique in China experienced three periods.First is that the Seventh Five-Year Plan period, this A period refers to that tackling of key scientific and technical problems has been done to the natural technologies such as complex ecosystem and oxidation pond processing aspect by country；Second is that eight or five Period, this period country had extensively studied integrated oxidation ditch and high load capacity activated sludge, and had introduced relevant treatment work Skill, such as SBR, A2O, AO, AB；Third is that this period in 95 periods is mainly made that the problems such as land occupation scale and energy consumption It solves, and has inquired into set of stain disease processing technique.By the effort in these three periods, China is in stain disease treatment process Long-range progress and development are achieved, most of sewage treatments require to be satisfied.But in the process for the processing of certain stain diseases In need to solve there are still some problems.

The two stage treatment that developed country has just reached stain disease processing in the 1970s is horizontal, wherein builds in the world If most country, sewage treatment plant is the U.S..But two stage treatment is because of its energy consumption height, operating cost and investment construction expense The disadvantages of larger, developed country starts to improve traditional process flow and the research of new technology, wherein at stain disease Reason is significantly paid attention to using technology.External stain disease processing technique mainly has SBR method, electromagnetization method, diaphragm to inhale Attached filtration method, biological degradation method and activated sludge process etc., it is very strict that stain disease handles discharge standard.It is most widely used Be activated sludge process, be mainly used in large-scale municipal wastewater treatment plant.Relatively advanced country is at widely available second level After reason, a large amount of scientific research strength is put into and fund comes operation, detection and the management progress of the equipment to processing sewage Effective reinforcement, has been largely fulfilled many high-tech technical applications.In the seventies U.S. of eighties of last century Start to carry out automatically controlling sewage treatment plant, the factory for handling sewage now largely has been realized in automatic control and survey Examination.

The waste water of Chinese Enterprises is classified largely into two classes: heavily contaminated waste water and light polluted waste liquid.Heavily contaminated waste water is mainly The industrial wastewater of each enterprise, the water-quality constituents of such waste water is complicated, pollutant kind is more, variation water quality is larger.Wherein, coal chemical industry The industrial wastewater of enterprise's discharge contains the refractory organic compounds such as polycyclic fragrant hydrocarbon, heterocyclic compound；Agricultural chemicals waste water processed mainly includes Some toxic substances, biochemical are poor；Structure is complicated, poisonous and harmful and biology is difficult for organic substance in Fine Chemical water quality The substance of degradation is more, this also causes such wastewater treatment difficulty larger.Heavily contaminated waste water has finally been pooled to heavily contaminated waste water Conditioning tank.Light polluted waste liquid is mainly derived from the RO concentrated water and recirculating cooling water system generated during enterprise's pure water preparation Sewerage.The waste water directly passes through pipeline without pre-treatment and is discharged into light polluted waste liquid conditioning tank.Compared to heavily contaminated waste water, such Wastewater treatment is got up relatively easily, but there is also certain to ask guaranteeing zero-emission and reduce cost during to handle the waste water Topic.Especially in the environment of low temperature, during separating heavily contaminated waste water, due to the property of crystal salt sodium sulphate itself, concentration Cool down after to certain multiple, part of sulfuric acid sodium crystal will be precipitated, and crystal occur in crystallizing tank and block pipeline, influence equipment It operates normally.

Chinese patent CN107915279A discloses a kind of reverse osmosis concentrated water treatment facilities, comprising: recyclable device and microwave Processing unit.Recyclable device recycles reverse osmosis concentrated water, and recyclable device includes the reverse osmotic pressure force container for being equipped with desalination membrane.Microwave Processing unit is connected to recyclable device, and microwave heating appts carry out degradation treatment to the concentrated water that recyclable device exports, and wherein this is micro- Wave processing unit carries out microwave irradiation to concentrated water, and the concentrated water of microwave heating appts discharge is discharged.Although the device can be to dense Water reduces COD by microwave treatment, but for the organic substance in waste water, can not still handle.And the device can not yet Realize the zero-emission of sewage.Therefore, water treatment field needs one kind that can either remove organic matter in low temperature environment now, and can It realizes sewage zero-discharge, while obtaining the water treatment facilities of regeneration fresh water and salt substance.

Utility model content

For the deficiencies of the prior art, the utility model provide it is a kind of based on mesohigh special type concentration film waste water desalination at Manage device, which is characterized in that the waste water desalting processing device include at least pretreatment unit, pliable cell, reverse osmosis units, Upgrading unit and crystalline element, the pretreatment unit include the homogeneous tank being sequentially connected in series, aeration tank, magnetic swirl-type filter and Catalytic oxidizing equipment；The pliable cell is weak acid cation bed, and the reverse osmosis units include the sequentially connected middle reverse osmosis dress of pressure Set with high pressure reverse osmosis unit, the upgrading unit includes sequentially connected nanofiltration device and electrically-driven ion switch, institute Crystalline element is stated including at least sodium chloride crystallizer, nitre hot melt jar and freezing and crystallizing device, wherein the catalytic oxidizing equipment passes through The weak acid cation bed is connect with medium pressure reverse osmosis unit, and the high pressure reverse osmosis unit is connect with the nanofiltration device, institute Electrically-driven ion switch is stated to be connect with the sodium chloride crystallizer to obtain sodium chloride crystal, the electrically-driven ion exchange Device is connect by the nitre hot melt jar with the freezing and crystallizing device sodium sulfate crystal is precipitated.

According to a preferred embodiment, the freezing and crystallizing device includes being connected with the first whizzer with by ten water sulphur The separation of sour sodium, the sodium chloride crystallizer and concentrated water water tank are provided with preheater, the sodium chloride crystallizer by circulating pump with Heater connects the evaporative crystallization to form closed circuit to carry out sodium chloride, and the sodium chloride crystallizer be connected with first from Centrifugal separator is to separate sodium chloride with mother liquor.

According to a preferred embodiment, the nanofiltration device and the electrically-driven ion switch are provided with fresh water Discharge line, so that the fresh water after the fresh water of nanofiltration processing and/or electrically-driven ion exchange concentration is discharged.

According to a preferred embodiment, the electrically-driven ion switch is provided with the concentrated water water of adjustable flow velocity Case, the concentrated water water tank are separately connected with the sodium chloride crystallizer and the nitre hot melt jar.

According to a preferred embodiment, at least one rotatable first aeration tube is provided in the aeration tank, In, first aeration tube is pivotally arranged based on the rotary shaft of the aeration bottom of pond portion, the bottom of the rotary shaft End is provided with the driving ball for controlling the rotation axle rotary speed, is provided on first aeration tube several with aeration Second aeration tube in hole；Second aeration tube is uniformly arranged on the surface of the rotary shaft in staggered mode.

According to a preferred embodiment, the leakage fluid dram of the aeration tank is provided at least one filter cartridge.

According to a preferred embodiment, the catalytic oxidizing equipment occurs including at least sequentially connected oxygen source ozone Device, micro-nano airlift pump, stable can, oxidizing tower and BAC tank, wherein one end setting of the oxygen source ozone generator is useful In the heat exchanger for reducing temperature, the heat exchanger is connected by the cooling water inlet of water circulating pump and the oxygen source ozone generator It connects, the BAC tank is connected at least one backwash water pump and at least one Aeration fan.

According to a preferred embodiment, the magnetic rotation flow filter includes cylinder, and cylinder is followed successively by clarification from top to bottom Area, filtering area and clear water zone, for settling section for forming primary water after magnetizing muddy water, filtering area is used for will be clear in settling section Clear water is filled into clear water zone, and the cylinder is internally provided with swirl cylinder, and the upper end of swirl cylinder is the inside and outside bitubular, bitubular barrel Between formed vortex water distributing trough；Multiple distributing holes are evenly arranged on eddy flow upper end edge inner cylinder barrel, are set between adjacent distributing hole The permanent magnets for magnetizing muddy water are equipped with, so that magnetized muddy water is flowed into swirl cylinder cement point under the influence of centrifugal force From.

According to a preferred embodiment, the sludge pipe of the magnetic rotation flow filter is connect at least one deslimer.

According to a preferred embodiment, the nanofiltration device includes Rose Box and the nanofiltration film layer in Rose Box, The upper and lower ends of the Rose Box are respectively arranged with water inlet pipe and outlet pipe, are located above nanofiltration film layer in the Rose Box and set It is equipped with water-stop sheet, several evenly distributed water distributing pores are provided on the water-stop sheet, the top in the Rose Box is located at water inlet Flusher is provided at pipe, cooperation is provided on the water inlet pipe being capable of transverse shifting change water inlet tube opening on water inlet pipe The speed regulation block of size, is provided with limited block on described that end for being located in water inlet pipe of speed regulation block, block and the Rose Box of adjusting the speed Top surface fits, and the water-stop sheet is located at the middle position of Rose Box roof and nanofiltration film layer.

The advantageous effects of the utility model:

It (1), can effectively will be in brine waste by using mesohigh reverse osmosis membrane and novel water treatment facilities Salt component crystallization is precipitated, while obtaining a large amount of fresh water, realizes the zero-emission of sewage；

(2) it is improved by the order of connection to prior art device, realizes the variation of wastewater treatment process, improved The treatment effeciency of brine waste；

(3) by the use of novel aeration tank and catalytic oxidizing equipment, waste water is realized into organic oxidation in pretreatment stage, So that the fully oxidized decomposition of organic principle in waste water, improves the purity level of subsequent salt substance crystallization.

Detailed description of the invention

Fig. 1 is the module diagram of the connection structure of the utility model；

Fig. 2 is the structural schematic diagram of the magnetic rotation flow filter of the utility model；

Fig. 3 is the structural schematic diagram of the catalytic oxidizing equipment of the utility model；

Fig. 4 is the structural schematic diagram of the aeration tank of the utility model；With

Fig. 5 is the structural schematic diagram of the nanofiltration device of the utility model.

Reference signs list

10: pretreatment unit 11: homogeneous tank 12: aeration tank

13: magnetic swirl-type filter 14: catalytic oxidizing equipment 20: weak acid cation bed

31: middle pressure reverse osmosis unit 32: high pressure reverse osmosis unit 41: nanofiltration device

42: electrically-driven ion switch 43: concentrated water water tank 50: crystalline element

51: sodium chloride crystallizer 52: nitre hot melt jar 53: freezing and crystallizing device

141: oxygen source ozone generator 142: micro-nano airlift pump 143: stable can

144: oxidizing tower 145:BAC tank 146: heat exchanger

147: water circulating pump 148: ozone catalyst 149: backwash water pump

1410: Aeration fan 121: 122: the first aeration tube of shell

123: rotary shaft 124: driving 125: the second aeration tube of ball

126: leakage fluid dram 301: cylinder 302: settling section

303: filtering area 304: clear water zone 305: swirl cylinder

306: central overflow pipe 307: vortex 308: the first water inlet pipe of water distributing trough

309: the first combs 310: sludge pipe 311: water distributor

312: water distributor 313: 314: the second comb of cloth water cap

315: triangle drainage weir 316: backwash drainpipe 317: clear water outlet pipe

318: backwash water inlet pipe 320: emptying pipe 321: washing water inlet pipe

322: air purge air inlet pipe 323: gas-water mixer 324: air water distribution pipe

327: exhaust valve 329: distributing hole 330: permanent magnets

411: Rose Box 412: nanofiltration film layer 413: water-stop sheet

414: water distributing pore 415: flusher 416: speed regulation block

417: 4111: the second water inlet pipe 4112 of limited block: outlet pipe

Specific embodiment

It is described in detail with reference to the accompanying drawing.

For the deficiencies of the prior art, the utility model provide it is a kind of based on mesohigh special type concentration film waste water desalination at It manages device and includes at least pretreatment unit 10, pliable cell, reverse osmosis units, upgrading unit and crystalline element 50.Such as Fig. 1 institute Show, pretreatment unit 10, pliable cell, reverse osmosis units, upgrading unit and crystalline element 50 are sequentially connected.

Pretreatment unit 10 includes the homogeneous tank 11 being sequentially connected in series, aeration tank 12, magnetic swirl-type filter 13 and catalysis oxygen Makeup sets 14.Pliable cell is weak acid cation bed 20.Reverse osmosis units include sequentially connected middle pressure reverse osmosis unit 31 and high pressure Reverse osmosis unit 32.Upgrading unit includes sequentially connected nanofiltration device 41 and electrically-driven ion switch 42.Crystalline element 50 include at least sodium chloride crystallizer 51, nitre hot melt jar 52 and freezing and crystallizing device 53.Wherein, catalytic oxidizing equipment 14 passes through weak acid Cation bed 20 is connect with middle pressure reverse osmosis unit 31.High pressure reverse osmosis unit 32 is connect with nanofiltration device 41.Electrically-driven ion exchange Device 42 is connect with sodium chloride crystallizer 51 to obtain sodium chloride crystal.Electrically-driven ion switch 42 passes through nitre hot melt jar 52 It connect with freezing and crystallizing device 53 sodium sulfate crystal is precipitated.

Sulfur-containing waste water enters waste water desalting processing device by homogeneous tank 11.Contain blender in homogeneous tank, can make to give up Dispersion emulsification, micronized and homogenization in water, to improve the ingredient stability and uniformity of waste water.Aeration tank 12 utilizes work Property sludge carry out sewage treatment, the certain dwell time of sewage of offer in pond, meet oxygen amount required for aerobic microbiological and The mixing condition that sewage and activated sludge come into full contact with.Aeration tank is mainly by three pond body, aerating system and intake-outlet parts Composition.Pond body is generally built up with armored concrete, and flat shape has rectangle, rectangular and round etc..Magnetic swirl-type filter 13 Using centrifugal principle, solid matter and greasy dirt in waste water can be effectively removed.Catalytic oxidizing equipment 14 will be in sulfur-containing waste water Oxidation operation decomposes non-inorganic matter, so that only there are inorganic constituents for waste water, convenient for the raising of the degree of purity of subsequent sulfur-bearing crystal. Therefore, pretreatment unit can sufficiently go out solid particle, greasy dirt ingredient and organic principle in sulfur-containing waste water, both improve subsequent The efficiency of water process is also beneficial to improve the service life of subsequent water treatment facilities.

Pliable cell is weak acid cation bed.Weak acid cation bed is the pressure filter of weak-acid cation-exchange resin.Weak acid Cation bed is to carry out softened water using the strong ion-exchange capacity of weak-acid cation-exchange resin.Wherein Subacidity cation exchange tree Rouge is most wide with the weakly acidic resin purposes of carboxylic acid group.Dissociation degree is weaker in water as organic acid for carboxylic acid group's positive resin, is in Faintly acid, it can only show ion exchange with that could dissociate in alkaline medium close to neutral.Weak acid cation bed at runtime, First regenerated with HCl, after regenerated with NaOH, convert Na for weak acid positive resin²⁺, to improve its exchange rate, water outlet PH is greater than 10。

Reverse osmosis units include medium and high pressure reverse osmosis unit.Pressure reverse osmosis unit contains middle pressure reverse osmosis membrane in i.e., High pressure reverse osmosis unit contains high pressure reverse osmosis membrane.Under pressure, hydrone can be by RO film, and the nothing in the water of source The impurity such as machine salt, heavy metal ion, organic matter, colloid, bacterium, virus can not be by RO film, to make the pure water that can be penetrated It is strictly distinguished with the condensed water that can not be penetrated.Reverse osmosis unit and high pressure reverse osmosis unit, Neng Gouti are pressed in use simultaneously The reverse osmosis efficiency of high waste water obtains the higher fresh water of purity and the higher concentrated water of concentration, had both reduced subsequent concentration unit Workload, and a large amount of regeneration fresh water is obtained, for Enterprises use.Preferably, middle pressure reverse osmosis unit and high pressure reverse osmosis Saturating device connects to power supply in the operating condition.

Upgrading unit includes nanofiltration device and electrically-driven ion switch.Nanofiltration device includes at least booster pump, high pressure Pump, nanofiltration membrane, antisludging agent adding set and reducing agent adding set.Preferably, booster pump is connect with high pressure reverse osmosis unit.Increase Press pump is sequentially connected with high-pressure pump and nanofiltration membrane, and antisludging agent adding set and reducing agent adding set are connect with nanofiltration membrane respectively. Nanofiltration membrane is connect with electrically-driven ion switch.Preferably, nanofiltration device connects to power supply in the operating condition.

Wherein, nanofiltration membrane its separation application in show following three notable features: first is that its molecular cut off between It is 200~2000 between reverse osmosis membrane and ultrafiltration membrane；Second is that nanofiltration membrane has certain rejection to inorganic salts, because of its table Face separating layer is made of polyelectrolyte, has electrostatic interaction to ion；Third is that the big flux of ultralow pressure, i.e., under ultralow pressure 0.1Mpa remains to work, and has biggish flux.Monovalent salt and divalent salts of the stain disease after nanofiltration is handled in water are separated, And then achieve the purpose that Isolating chlorinated sodium early period and sodium sulphate.

Electrically-driven ion switch include electrically-driven ion exchange membrane, current transducer, concentrated water water tank 43, fresh-water tank and Chemicals dosing plant.Electric drive UF membrane switch mainly is alternately arranged to form between two electrodes by a series of yin, yang films to be permitted The small water chamber mostly separated by film.When raw water enters these cells, under the action of DC electric field, the ion in solution is made Directional migration uses, and cation is migrated to cathode direction, and anion is migrated to anode direction.But since electric drive film has selection As a result permeability reduces some cell ion concentrations and becomes freshwater room, the cell adjacent with freshwater room is then big because being enriched It measures ion and becomes concentrated water room.Two kinds of different classes of water such as available fresh water and concentrated water are distinguished from freshwater room and concentrated water room Matter.So that the ion in raw water is separated and is concentrated, it is finally reached the effect of purification of water quality.Fresh-water tank is light for storing Water is simultaneously discharged.Concentrated water water tank 43 is used to store the concentrated water of discharge and inputs other devices.

Crystalline element 50 obtains a large amount of regenerated sodium chloride and ten water for crystallizing to sodium chloride and sal glauberi Sodium sulphate.Regenerated sodium chloride and sal glauberi can put into production again, save the production cost of factory and enterprise, and protect Retaining ring border.Sodium chloride crystallizer in crystalline element flashes form using MVR forced circulation, by adjusting MVR vapour compression machine Frequency adjust indirectly steam dosage adjustment salt crystallizer evaporation capacity.Preferably, sodium chloride crystallizer be connected with second from Centrifugal separator forms dry sodium chloride crystal so that sodium chloride crystal to be carried out dehydrating.Preferably, sulfate crystal device is same Sample is flashed using forced circulation, after the secondary vapour for generating sufficient amount to boiling using raw steam heating feed liquid, utilizes both vapor compression Machine compresses secondary steam to heater, and the evaporation capacity of sulfate crystal device is adjusted by frequency control compressor.By the sulphur of saturation Enter freezing and crystallizing device 53 after acid sodium solution cooling, sal glauberi is precipitated.

Preferably, freezing and crystallizing device 53 is connected with the first whizzer to separate sal glauberi.Sodium chloride crystallization Preheater is provided between device 51 and concentrated water water tank 43, sodium chloride crystallizer 51 connect to form closure with heater by circulating pump Circuit to carry out the evaporative crystallization of sodium chloride, and sodium chloride crystallizer 51 be connected with the second whizzer with by sodium chloride with Mother liquor separation.

Preferably, nanofiltration device 41 and electrically-driven ion switch 42 are provided with fresh water outlet pipe, to will receive The fresh water for filtering processing and/or the fresh water discharge after electrically-driven ion exchange concentration.Preferably, fresh water is expelled to fresh-water tank, with into Row cycling and reutilization.

Preferably, electrically-driven ion switch 42 is provided with the concentrated water water tank 43 of adjustable flow velocity, concentrated water water tank 43 with Sodium chloride crystallizer 51 and nitre hot melt jar 52 are separately connected.Preferably, by the way that concentrated water water tank is arranged, concentrated water can either be stored, again The flow velocity of concentrated water can be adjusted, to meet the needs of crystalline element, so that crystalline element will not be filled since electrically-driven ion exchanges It sets 42 speed and influences crystallization rate.

Preferably, as shown in figure 4, being provided at least one rotatable first aeration tube in the shell 121 of aeration tank 12 122.Wherein, the first aeration tube 122 is pivotally arranged based on the rotary shaft 123 of 12 bottom of aeration tank.Rotary shaft 123 bottom end is provided with the driving ball 124 for controlling 123 rotation speed of rotary shaft.If being provided on the first aeration tube 122 Dry the second aeration tube 125 with solarization air cap.Second aeration tube 125 is uniformly arranged on rotary shaft 123 in staggered mode Surface.Preferably, the leakage fluid dram 126 of aeration tank 12 is provided at least one filter cartridge.

Preferably, as shown in figure 3, catalytic oxidizing equipment 14 include at least sequentially connected oxygen source ozone generator 141, Micro-nano airlift pump 142, stable can 143, oxidizing tower 144 and BAC tank 145.Wherein, one end of oxygen source ozone generator 141 It is provided with the heat exchanger 146 for reducing temperature.Heat exchanger 146 passes through water circulating pump 147 and oxygen source ozone generator 141 Cooling water inlet connection.BAC tank is connected at least one backwash water pump 149 and at least one Aeration fan 1410.Wherein ozone The gas outlet of generator 141 is vertically connected on the water inlet pipe of micro-nano airlift pump 142.Micro-nano 142 water outlet of airlift pump according to Secondary and stable can 143, oxidizing tower 144, BAC tank 145 connect.The gravity flow of stable can 143 enters oxidizing tower 144.The oxidation The gravity flow of tower 144 enters BAC tank 145.

Preferably, the oxygen source ozone generator 141 uses corona discharge method, and oxygen intake is in front end, upper end, ozone Outlet is in end, lower end, and cooling water connector is in rear end, lower end, and cooling water connector is in ozone outlet front end.The micro-nano bubble Pump 142 uses unshrouded impeller, and water inlet is vertically arranged in top, water outlet in side, intake-outlet.It is adjusted using flowmeter micro- The air inflow of nano bubble pump 142.The stable can 143 be it is horizontal, for water inlet in side, water outlet, can will be molten in the other side Air water is released to nanoscale minute bubbles.Preferably, it is filled with ozone catalyst 148 in the oxidizing tower 144, using nanoscale material Material is made.In bottom, water outlet is arranged at top for 144 water inlet of the oxidizing tower setting.Activity is filled in the BAC tank 145 Carbon filling material, water inlet setting are arranged in top, water outlet in bottom.Plate heat exchanger 146 is arranged in 141 end of ozone generator, Using recirculated water or BAC water outlet as cooling water source, the temperature of ozone is reduced, ozone heat is reduced and decomposes.

Preferably, as shown in Fig. 2, magnetic rotation flow filter includes cylinder 301, cylinder 301 is followed successively by settling section from top to bottom 302, filtering area 303 and clear water zone 304.For forming primary water after magnetizing muddy water, filtering area 303 is used for settling section 302 Primary water in settling section 302 is filled into clear water zone 304.Cylinder 301 is internally provided with swirl cylinder 305, swirl cylinder 305 Upper end be the inside and outside bitubular, vortex water distributing trough 307 is formed between bitubular barrel.Vortex water distributing trough 307 is circumscribed with can be by oil gas The first comb 309 being discharged to outside cylinder 301.Horizontal connection has the first water inlet pipe 308 on the outer cylinder of swirl cylinder 305.It is revolving The reason of horizontally arranged water inlet 08, is in flow cartridge 305, and in swirl cylinder operating, muddy water is intake with tangential direction from first Pipe 308 enters in vortex water distributing trough 307, to form vortex.It is evenly arranged on 305 upper end edge inner cylinder barrel of swirl cylinder more A distributing hole 329.The permanent magnets 330 for magnetizing muddy water are provided between adjacent distributing hole 329, so that magnetized muddy water flows into Into swirl cylinder 305, cement is separated under the influence of centrifugal force.Bucket is led for taper in the bottom of swirl cylinder 305.Lead bucket The sludge pipe 310 outside cylinder 301 is stretched out in end connection, and the mud pellet separated in swirl cylinder 305 is discharged to outside cylinder 301 Portion.In addition, the oil gas generated in vortex water distributing trough 307 can be discharged to outside cylinder 301 by the first comb 309.Pass through vortex Water distribution and permanent magnets magnetization eddy flow water inlet, realize layering water inlet, improve magnetic field strength, increase suspended particle cohesion Speed；It is intake by layering, increases rotation speed, generate biggish centrifugal force；The work for passing through centrifugal force using magnetization effect With, shorten the sedimentation time, improve purification efficiency.Swirl cylinder 305 is internally provided with central overflow pipe 306.Central overflow pipe 306 top is connected with water distributor 311, and the top of water distributor 311 is formed with cavity, which is the oil-collecting that can collect oil slick Chamber.Collection chamber is connected with the second comb 314 that can be discharged to oil gas outside cylinder 1, which is preferably rotary table Shape, the outside of water distributor 311 are equipped with more water distributors 312, multiple cloth water caps 313 are provided on every water distributor 312.Water distribution Cap 313 is the protrusion that setting is downwardly projected from water distributor 312, after carrying out cement separation into the muddy water in swirl cylinder 305, point Water and oil slick from after enter water distributor 311 along central overflow pipe 306, and the oil slick after separation enters collection chamber by the Oil slick is discharged to outside cylinder 301 by two combs 314.Water after separation is sprayed by water distributor 312 and cloth water cap 313 to mistake Filter area's filtering.Mud pellet after separating in swirl cylinder 305 is discharged to outside cylinder 301 by the sludge pipe of swirl cylinder bottom.Filtering area 303 include the mixing wastewater with air unit that the filter element inside cylinder 301 is arranged in and is arranged in outside cylinder 301.Air water is mixed Closing unit includes gas-water mixer 323, washing water inlet pipe 321, air purge air inlet pipe 322 and air water distribution pipe 324.Wherein, water It washes water inlet pipe 321 and air purge air inlet pipe 322 is all connected with gas-water mixer 323.323 connector drum 301 of gas-water mixer.Clear water The bottom in area 304 is connected with clear water outlet pipe 317, is discharged by the filtered clear water of filtering area 303 from the clear water in clear water zone Pipe 317 flows out to outside cylinder 301.The outside of filtering area 303 is additionally provided with backwash water inlet pipe 318, and backwash water inlet pipe 318 connects Clear water outlet pipe 317, water enter clear water zone 304 through clear water outlet pipe 317 from backwash water inlet pipe 318.Filter material layer is carried out anti- After washing, backwash water overflows to the triangle drainage weir 315 being arranged in clarification pool 302.The connection of triangle drainage weir 315 is arranged clear Backwash drainpipe 316 outside clear water zone 302, backwash water are discharged outside cylinder 301 by backwash drainpipe 316.The bottom of cylinder 301 Portion is additionally provided with emptying pipe 320, and the residue in cylinder 301 is drawn off；The side of cylinder 301 is additionally provided with to be examined for people The check-in hole 328 repaired.The top of cylinder 301 is additionally provided with exhaust valve 327.The plant chimney stalk of first regulating tank passes through first Water inlet pipe 308 flows into vortex water distributing trough 307, flows into swirl cylinder 305 by distributing hole 329 and accelerates rotation, generates larger centrifugal force, Under the collective effect of centrifugal force and gravity, heavy particle is fallen to rapidly by the effect of gravity and leads bucket, passes through spoil disposal Pipe 310 is discharged.So that magnetized muddy water is flowed into swirl cylinder 305 cement separation under the influence of centrifugal force.Preferably, magnetic rotation The sludge pipe 310 of flow filter is connect at least one deslimer 60.Deslimer 60 is returned the particle that sludge pipe 310 is discharged It receives.The fine grained of light specific gravity flows through central overflow pipe 306 with water and flows into water distributor 311, is distributed to each water distributor 312, passes through cloth Water cap 313 uniformly sprays to filter material layer, penetrates into clear water zone 304 by filter material layer, clear water is through clear water outlet pipe 317.That is clear water Outlet pipe 317 is connect with ultrafiltration apparatus 800 by pipeline.

Preferably, as shown in figure 5, nanofiltration device 41 includes Rose Box 411 and the nanofiltration film layer in Rose Box 411 412.The upper and lower ends of Rose Box 411 are respectively arranged with the second water inlet pipe 4111 and outlet pipe 4112.It is located in Rose Box 411 The top of nanofiltration film layer 412 is provided with water-stop sheet 413.Several evenly distributed water distributing pores 414, mistake are provided on water-stop sheet 413 Top in filter box 411, which is located at the second water inlet pipe 4111, is provided with flusher 415.It is provided with and matches on second water inlet pipe 4111 Close the speed regulation block 416 for capableing of transverse shifting change water inlet pipe openings of sizes on water inlet pipe.It adjusts the speed block 416 and is located at the second water inlet Limited block 417 is provided on that end in pipe 4111.Speed regulation block 416 and the top surface of Rose Box 411 fit, and water-stop sheet 413 In the middle position of Rose Box 411 roof and nanofiltration film layer 412.

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 waste water desalting processing device based on mesohigh special type concentration film, characterized in that the waste water desalting processing dress It sets including at least pretreatment unit (10), pliable cell, reverse osmosis units, upgrading unit and crystalline element (50),

The pretreatment unit (10) includes the homogeneous tank (11) being sequentially connected in series, aeration tank (12), magnetic swirl-type filter (13) With catalytic oxidizing equipment (14)；

The pliable cell is weak acid cation bed (20), and the reverse osmosis units include sequentially connected middle pressure reverse osmosis unit (31) With high pressure reverse osmosis unit (32),

The upgrading unit includes sequentially connected nanofiltration device (41) and electrically-driven ion switch (42),

The crystalline element (50) includes at least sodium chloride crystallizer (51), nitre hot melt jar (52) and freezing and crystallizing device (53), In,

The catalytic oxidizing equipment (14) is connect by the weak acid cation bed (20) with medium pressure reverse osmosis unit (31), described High pressure reverse osmosis unit (32) is connect with the nanofiltration device (41), the electrically-driven ion switch (42) and the chlorination Sodium crystallizer (51) is connected to obtain sodium chloride crystal,

The electrically-driven ion switch (42) by the nitre hot melt jar (52) connect with the freezing and crystallizing device (53) with Sodium sulfate crystal is precipitated.

2. the waste water desalting processing device according to claim 1 based on mesohigh special type concentration film, characterized in that described Freezing and crystallizing device (53) includes being connected with the first whizzer to separate sal glauberi,

The sodium chloride crystallizer (51) and concentrated water water tank (43) are provided with preheater,

The sodium chloride crystallizer (51) connect the evaporation to form closed circuit to carry out sodium chloride by circulating pump with heater Crystallization, and the sodium chloride crystallizer (51) is connected with the first whizzer to separate sodium chloride with mother liquor.

3. the waste water desalting processing device according to claim 2 based on mesohigh special type concentration film, characterized in that described Nanofiltration device (41) and the electrically-driven ion switch (42) are provided with fresh water outlet pipe, thus by nanofiltration processing Fresh water discharge after fresh water and/or electrically-driven ion exchange concentration.

4. the waste water desalting processing device according to claim 3 based on mesohigh special type concentration film, characterized in that described Electrically-driven ion switch (42) is provided with the concentrated water water tank (43) of adjustable flow velocity, the concentrated water water tank (43) and the chlorine Change sodium crystallizer (51) and the nitre hot melt jar (52) is separately connected.

5. the waste water desalting processing device according to claim 4 based on mesohigh special type concentration film, characterized in that described At least one rotatable first aeration tube (122) is provided in aeration tank (12), wherein

The rotary shaft (123) that first aeration tube (122) is based on the aeration tank (12) bottom is pivotally arranged, The bottom end of the rotary shaft (123) is provided with the driving ball (124) for controlling the rotary shaft (123) rotation speed, described Several the second aeration tubes (125) with solarization air cap are provided on first aeration tube (122)；Second aeration tube (125) with Staggered mode is uniformly arranged on the surface of the rotary shaft (123).

6. the waste water desalting processing device according to claim 5 based on mesohigh special type concentration film, characterized in that described The leakage fluid dram (126) of aeration tank (12) is provided at least one filter cartridge.

7. the waste water desalting processing device according to claim 6 based on mesohigh special type concentration film, characterized in that described Catalytic oxidizing equipment (14) includes at least sequentially connected oxygen source ozone generator (141), micro-nano airlift pump (142), steady Determine tank (143), oxidizing tower (144) and BAC tank (145), wherein

The heat exchanger (146) that one end of the oxygen source ozone generator (141) is provided with for reducing temperature, the heat exchanger (146) it is connect by water circulating pump (147) with the cooling water inlet of the oxygen source ozone generator (141),

The BAC tank is connected at least one backwash water pump (149) and at least one Aeration fan (1410).

8. the waste water desalting processing device according to claim 7 based on mesohigh special type concentration film, characterized in that described Magnetic rotation flow filter includes cylinder (301), cylinder (301) be followed successively by from top to bottom settling section (302), filtering area (303) and Clear water zone (304), settling section (302) are used for for forming primary water, filtering area (303) after magnetizing muddy water by settling section (302) primary water in is filled into clear water zone (304),

The cylinder (301) is internally provided with swirl cylinder (305), and the upper end of swirl cylinder (305) is the inside and outside bitubular, bitubular barrel Between formed vortex water distributing trough (307)；Multiple distributing holes (329) are evenly arranged on swirl cylinder (305) upper end edge inner cylinder barrel, The permanent magnets (330) for magnetizing muddy water are provided between adjacent distributing hole (329), so that magnetized muddy water is flowed into swirl cylinder (305) cement separates under the influence of centrifugal force in.

9. the waste water desalting processing device according to claim 8 based on mesohigh special type concentration film, characterized in that described The sludge pipe (310) of magnetic rotation flow filter is connect at least one deslimer (60).

10. the waste water desalting processing device according to claim 7 based on mesohigh special type concentration film, characterized in that institute State the nanofiltration film layer (412) that nanofiltration device (41) includes Rose Box (411) and is located in Rose Box (411), the Rose Box (411) upper and lower ends are respectively arranged with water inlet pipe (4111) and outlet pipe (4112), are located at nanofiltration in the Rose Box (411) It is provided with above film layer (412) water-stop sheet (413), is provided with several evenly distributed water distributing pores on the water-stop sheet (413) (414), the top in the Rose Box (411), which is located at water inlet pipe (4111), is provided with flusher (415), the water inlet pipe (4111) the speed regulation block (416) for cooperating and capableing of transverse shifting change water inlet pipe openings of sizes on water inlet pipe is provided on, it is described It is provided with limited block (417) on that end that speed regulation block (416) is located in water inlet pipe (4111), the speed regulation block (416) and filtering The top surface of case (411) fits, and the water-stop sheet (413) is located at the interposition of Rose Box (411) roof and nanofiltration film layer (412) It sets.