CN105000741B - The processing system of counter-infiltration dope - Google Patents
The processing system of counter-infiltration dope Download PDFInfo
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- CN105000741B CN105000741B CN201510432440.9A CN201510432440A CN105000741B CN 105000741 B CN105000741 B CN 105000741B CN 201510432440 A CN201510432440 A CN 201510432440A CN 105000741 B CN105000741 B CN 105000741B
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Abstract
The invention provides a kind of processing system of counter-infiltration dope.The processing system of counter-infiltration dope includes reverse osmosis treatment equipment and evaporation crystallization equipment, reverse osmosis treatment equipment includes pretreatment unit and is arranged on the reverse osmosis treatment device in pretreatment unit downstream, and evaporation crystallization equipment is connected with reverse osmosis treatment equipment and is used to purify caused at least part of waste water in reverse osmosis treatment equipment.Apply the technical scheme of the present invention, counter-infiltration dope is first passed around into reverse-osmosis treated, then handled by evaporative crystallization, effectively purified counter-infiltration dope.
Description
Technical field
The present invention relates to sewage treatment equipment field, more particularly, to a kind of processing system of counter-infiltration dope.
Background technology
Coal-to-olefin technology worldwide received much concern in recent years.Saline sewage on coal to olefin project passes through
Dope waste water caused by conventional reverse osmosis, currently without effective processing method.
The content of the invention
The present invention is intended to provide a kind of processing system of counter-infiltration dope, effectively to purify the saliferous of coal to olefin project
Sewage caused counter-infiltration dope by conventional reverse osmosis.
To achieve these goals, the invention provides a kind of processing system of counter-infiltration dope, processing system to include：Instead
Processing equipment is permeated, reverse osmosis treatment equipment includes pretreatment unit and is arranged on the reverse-osmosis treated dress in pretreatment unit downstream
Put；Evaporation crystallization equipment, evaporation crystallization equipment are connected anti-to purify reverse osmosis treatment equipment processing with reverse osmosis treatment equipment
Caused at least part of waste water during infiltration dope.
Further, reverse osmosis treatment device includes being used for the concentrated water outlet for exporting reverse osmosis concentrated water, and concentrated water outlet is with steaming
The import of hair crystallizer communicates.
Further, reverse osmosis treatment equipment also include be arranged on reverse osmosis treatment device downstream be used for remove reverse osmosis
First strongly-acid cation exchanger of the ammonium ion in the water of saturating processing unit output.
Further, the first strongly-acid cation exchanger includes being used to export the caused regeneration liquid waste in regenerative process
First strongly-acid cation exchanger regeneration liquid waste is exported, and the outlet of the first strongly-acid cation exchanger regeneration liquid waste is set with evaporative crystallization
Standby import communicates.
Further, pretreatment unit includes：Depositing reservoir, depositing reservoir are arranged on the upstream of reverse osmosis treatment device；With/
Or, quartz filter, quartz filter are arranged on the upstream of reverse osmosis treatment device；And/or ion-exchange unit, from
Sub- switching equipment is arranged on the upstream of reverse osmosis treatment device, and ion-exchange unit is used for the hardness for reducing water；And/or ultrafiltration
Equipment, ultrafiltration apparatus are arranged on reverse osmosis treatment device upstream；And/or cartridge filter, cartridge filter are arranged on counter-infiltration
Processing unit upstream.
Further, pretreatment unit includes depositing reservoir, quartz filter, the ion set gradually from upstream to downstream
Switching equipment, ultrafiltration apparatus, cartridge filter and reverse osmosis treatment device.
Further, depositing reservoir includes：Flocculation basin；Sedimentation basin, sedimentation basin are arranged on the downstream of flocculation basin；Sediment flows back
Device, sediment reflux are used at least part of sediment in sedimentation basin being delivered to flocculation basin to be used as the nuclei of condensation.
Further, pretreatment unit includes ion-exchange unit, ion-exchange unit include Na-ion exchanger and/or
Weakly acidic cation exchanger.
Further, ion-exchange unit includes weakly acidic cation exchanger, and ion-exchange unit is also weak including being arranged on
The degassing tower in the downstream of acid cation exchanger.
Further, ion-exchange unit includes：Na-ion exchanger, Na-ion exchanger include being used to export regenerated
The Na-ion exchanger waste liquid outlet of liquid, Na-ion exchanger waste liquid outlet communicate with the import of evaporation crystallization equipment；And/or
Weakly acidic cation exchanger, the weakly acidic cation exchanger waste liquid that weakly acidic cation exchanger includes being used to export regeneration liquid waste go out
Mouthful, the import of weakly acidic cation exchanger waste liquid outlet evaporation crystallization equipment communicates.
Further, evaporation crystallization equipment includes：Evaporator, evaporator include being used to be introduced into reverse osmosis treatment equipment to produce
The waste water inlet of raw at least part waste water and the evaporator magma outlet for exporting the magma after evaporation process；Crystallizer,
Crystallizer includes crystallizer magma import, and the import of crystallizer magma communicates with the evaporator magma outlet of evaporator；Mixing distillation
Water pot, mixing distillation water pot homogeneously pass to the distilled water for collecting evaporator and crystallizer institute output with evaporator and crystallizer.
Further, evaporator includes：Evaporator body, evaporator body include housing and the heat exchange being arranged in housing
Pipe；Steam inlet is heated, heating steam inlet, which is mutually passed to housing to housing, introduces steam and the media for heat exchange in heat exchanger tube；Thing
Batch can, material pot include material pot waste water inlet, steam and salting liquid mixture intake, steam (vapor) outlet and liquid outlet, material
Tank waste water inlet forms the waste water inlet of evaporator, and steam and salting liquid mixture intake communicate with the outlet of heat exchanger tube, steam
Outlet communicates with heating steam inlet, and liquid outlet communicates with the import of heat exchanger tube；Heater, heater be used for heat by
The steam (vapor) outlet of material pot is delivered to the steam of heating steam inlet；Vaporization chamber delivery port, vaporization chamber delivery port communicate with housing
To export by heating steam inlet into housing and the distilled water after media for heat exchange in heat exchanger tube, vaporization chamber delivery port is with mixing
Distillation water pot is communicated so that the steam after heat exchange is delivered into mixing distillation water pot.
Further, evaporator also includes demister, and the import of demister is connected with the steam (vapor) outlet of material pot, demisting
The gas vent of device is used to export the steam after demisting, and the gas vent of demister communicates with the heating steam inlet of evaporator.
Further, heater includes compressor, and the import of compressor communicates with the gas vent of demister, compressor
Outlet with heating steam inlet communicate.
Further, crystallizer includes：Crystallizer body, crystallizer body include the import of crystallizer body magma, crystallization
Device body magma exports and crystallizer steam (vapor) outlet；Forced circulation heat exchanger, forced circulation heat exchanger include magma pipeline, magma
Pipeline is serially connected between crystallizer body magma import and the outlet of crystallizer body magma；Circulating pump, circulating pump, which is serially connected with, to be tied
Between brilliant device body magma import and the outlet of crystallizer body magma；Condenser, condenser include condenser vapor import and cold
Condenser delivery port, leaving condenser water mouth communicate with mixing distillation water pot.
Further, crystallizer also includes：Crystallizer magma is exported, and crystallizer magma is exported for after exporting crystallization treatment
Concentration magma；Heart dewaterer includes concentration magma import and centrifugal dehydrator filtrate (liquid, concentrates magma import and crystallizer
Magma outlet communicates, and the crystallizer magma import of centrifugal dehydrator filtrate (liquid and crystallizer, which mutually passes to, produces centrifugal dehydrator
Filtrate be back to crystallizer with crystallization treatment again.
Further, evaporation crystallization equipment also includes the first stripping unit, and the import of the first stripping unit is with mixing distillation
Water pot communicates.
Further, evaporation crystallization equipment also includes the active carbon filter for being arranged on the downstream of the first stripping unit.
Further, what evaporation crystallization equipment also included being used for removing ammonium ion in distilled water removes ammonia unit, except ammonia
The import of unit communicates with mixing distillation water pot.
Further, except ammonia unit includes the second strongly-acid cation exchanger, the second strongly-acid cation exchanger includes using
Exported in the regenerative wastewater for exporting caused regenerative wastewater in the second strongly-acid cation exchanger regenerative process, regenerative wastewater outlet
Communicated with evaporator magma import.
Further, evaporation crystallization equipment also includes the second stripping unit, the second stripping unit inlet and the second strong acid sun
The wastewater outlet of ion-exchanger communicates, and the outlet of the second stripping unit communicates with the evaporator magma import of evaporator.
Apply the technical scheme of the present invention, the processing system of counter-infiltration dope includes reverse osmosis treatment equipment and evaporative crystallization
Equipment, reverse osmosis treatment equipment include pretreatment unit and are arranged on the reverse osmosis treatment device in pretreatment unit downstream, evaporation
Crystallizer is connected with reverse osmosis treatment equipment and is used to purify caused at least part of waste water in reverse osmosis treatment equipment.
Apply the technical scheme of the present invention, counter-infiltration dope is first passed around into reverse-osmosis treated, then handle, have by evaporative crystallization
Counter-infiltration dope is purified to effect.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its illustrate be used for explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows the structural representation of the processing system of the counter-infiltration dope of the present invention；
Fig. 2 shows the structural representation of the processing system of the counter-infiltration dope of the second embodiment of the present invention.
Reference：11st, reverse osmosis treatment device；111st, first paragraph reverse-osmosis treated portion；112nd, at second segment counter-infiltration
Reason portion；113rd, reverse osmosis purified water case；114th, counter-infiltration waste water tank；12nd, the first strongly-acid cation exchanger；13rd, cartridge filter；
14th, ultrafiltration apparatus；141st, ultrafiltration main body；142nd, ultrafiltration water tank；15th, ion-exchange unit；151st, Na-ion exchanger；152nd, it is weak
Acid cation exchanger；153rd, degassing tower；154th, ion exchange clear water tanks；155th, wastewater collection pond；16th, quartz filter；
17th, depositing reservoir；171st, flocculation basin；172nd, sedimentation basin；173rd, soda ash stake pond；174th, lime stake pond；175th, coagulating basin；18、
Regenerated liquid pool；19th, water pot is adjusted；21st, evaporator；211st, evaporator body；213rd, demister；214th, compressor；22nd, crystallize
Device；221st, crystallizer body；222nd, forced circulation heat exchanger；223rd, condenser；224th, centrifugal dehydrator；23rd, distilled water is mixed
Tank；24th, the first stripping unit；25th, filter element；26th, the second strongly-acid cation exchanger；27th, the second stripping unit；28th, enter
Water degassing device；29th, water preheater is entered.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As depicted in figs. 1 and 2, the processing system of the counter-infiltration dope of the embodiment of the present invention include reverse osmosis treatment equipment and
Evaporation crystallization equipment.Reverse osmosis treatment equipment includes pretreatment unit and is arranged on the reverse-osmosis treated dress in pretreatment unit downstream
Put 11.Evaporation crystallization equipment is connected with reverse osmosis treatment equipment and at least portion caused by being used to purify in reverse osmosis treatment equipment
The waste water divided.
In the present embodiment, saline sewage in coal to olefin project is passed through into dope waste water caused by conventional reverse osmosis, first
Again pass by reverse osmosis treatment device 11 to purify, caused at least part of waste water in above-mentioned purification process is passed through into evaporative crystallization
Equipment is for further processing.Realize and dope waste water caused by conventional reverse osmosis is passed through to saline sewage in coal to olefin project
Purification, improves Sewage treatment reuse ratio.
Reverse osmosis unit includes being used for the reverse osmosis unit concentrated water outlet for exporting reverse osmosis concentrated water, and reverse osmosis unit concentrated water goes out
Mouth communicates with the import of evaporation crystallization equipment.
In the present embodiment, reverse osmosis treatment device includes first paragraph reverse-osmosis treated portion 111, second segment reverse-osmosis treated portion
112nd, reverse osmosis purified water case 113 and counter-infiltration waste water tank 114.First paragraph reverse-osmosis treated portion and second segment reverse-osmosis treated portion are equal
Including reverse osmosis membrane.
The import in first paragraph reverse-osmosis treated portion 111 forms the import of reverse osmosis treatment device 11.At first paragraph counter-infiltration
Reason portion 111 also includes first paragraph reverse-osmosis treated portion's pure water inlet and first paragraph counter-infiltration portion concentrated water exports.First paragraph counter-infiltration
Processing unit pure water inlet communicates with reverse osmosis purified water case 113.The concentrated water outlet of first paragraph counter-infiltration portion and second segment reverse-osmosis treated
The import in portion 112 mutually passes to is delivered to second segment reverse-osmosis treated portion by concentrated water caused by first paragraph reverse-osmosis treated portion 111
112 carry out reverse-osmosis treated.
Second segment reverse-osmosis treated portion 112 includes the outlet of second segment reverse-osmosis treated portion concentrated water and second segment reverse-osmosis treated
Portion's pure water inlet.The concentrated water export mixes reverse osmosis unit concentrated water outlet of second segment reverse-osmosis treated portion.Second segment reverse-osmosis treated
The concentrated water outlet in portion 112 communicates with counter-infiltration waste water tank.The outlet of counter-infiltration waste water tank communicates with the import of evaporation crystallization equipment
So that concentrated water caused by reverse osmosis unit is delivered into evaporation crystallization equipment.Second segment reverse-osmosis treated portion's pure water inlet and counter-infiltration
Clear water tanks 113 communicate.
The reverse osmosis treatment device of the present embodiment, by reverse-osmosis treated twice, is effectively improved waste water by be clean
The rate of recovery, reduce the waste of resource.
The downstream that reverse osmosis treatment equipment also includes being arranged on reverse osmosis treatment device is used to remove reverse-osmosis treated dress
Put the first strongly-acid cation exchanger 12 of the ammonium ion in the water of output.
In order to remove the purified water through reverse-osmosis treated in existing ammonium ion, in reverse osmosis treatment device 11
Downstream is provided with the first strongly-acid cation exchanger 12.The import and above-mentioned counter-infiltration of first strongly-acid cation exchanger 12 are net
The outlet of water tank 113 communicates.
First strongly-acid cation exchanger 12 includes being used for the last the first for exporting the caused regeneration liquid waste in regenerative process
Acid cation exchanger regeneration liquid waste exports, and the outlet of the first strongly-acid cation exchanger regeneration liquid waste is entered with evaporation crystallization equipment
Mouth communicates.
First strongly-acid cation exchanger 12 includes being used to supplement the cation in the first strongly-acid cation exchanger 12
Acid purification system and the first strongly-acid cation exchanger regeneration liquid waste for exporting the regeneration liquid waste in regenerative process export.
Reverse osmosis treatment equipment also includes being used for the regenerated liquid pool 18 for collecting regeneration liquid waste.First strong-acid cation exchanges
The outlet of device regeneration liquid waste communicates with the import of regenerated liquid pool 18.The outlet of regenerated liquid pool 18 and the import of evaporation crystallization equipment
Communicate.
The pretreatment unit of the present embodiment includes cartridge filter 13, ultrafiltration apparatus 14, ion-exchange unit 15, quartz sand
Filter 16 and depositing reservoir 17.Cartridge filter 13, ultrafiltration apparatus 14, ion-exchange unit 15, quartz filter 16 and clear
Clear pond 17 is arranged at the upstream of reverse osmosis treatment device 11.
In the present embodiment, the regulation water pot 19 for being arranged on the upstream of depositing reservoir 17 is also included with processing unit.Adjust water pot 19
For mixing counter-infiltration dope to be clean and waste liquid from reverse osmosis treatment equipment caused part in the course of the work.
Depositing reservoir 17, quartz filter 16, ion-exchange unit 15, ultrafiltration apparatus 14, cartridge filter 13 and reverse osmosis
Saturating processing unit 11 is set gradually from upstream to downstream.
Depositing reservoir bets pond including coagulating basin 175, lime stake pond 174, the soda ash set gradually from upstream to downstream
173rd, flocculation basin 171 and sedimentation basin 172.
Depositing reservoir 17 also includes being used for the coagulant medicine system of dosing coagulant and coagulating basin stirring into coagulating basin 175
Device.After coagulant dosage is in sewage, quickly mixed with the suspension in sewage in the presence of coagulating basin agitator, in
Make particle " de- steady " with the negative electrical charge on suspended particle surface, form small flco subsequently into flocculation basin.Simultaneously in raw water
Phosphorus and coagulant react to form the purpose that phosphate reaches chemical dephosphorization.
Depositing reservoir 17 also includes being used to bet the lime medicine system of feeding lime and lime stake pond in pond 174 to lime
Agitator.After lime is added in sewage, the acidity in quick in the presence of lime bets pond agitator with sewage.
Depositing reservoir 17 also includes being used to bet the soda ash medicine system for adding soda ash in pond 173 to soda ash and soda ash bets pond
Agitator.Soda ash further adjusts the pH value of sewage in the presence of agitator.
Depositing reservoir 17 also includes being used for flocculant medicine system and the flocculation basin stirring for adding soda ash into flocculation basin 171
Device.Flocculant promotes the small flco in flocculation basin by absorption, electrically neutralizes the bigger flco of mutual bridging action formation,
The effect of agitator had not only enable medicament and flco be sufficiently mixed but also will not destroy established big flocculating body.
Sedimentation basin 172 is arranged on the downstream of flocculation basin 171.Depositing reservoir also includes sediment reflux and is used for sedimentation basin
In at least part of sediment be delivered to flocculation basin 171 to be used as the nuclei of condensation.
At least part of short grained sediment for being deposited in sedimentation basin bottom is delivered to flocculation by sediment reflux
Chi Zhong.The small flco that little particle and coagulation are formed quickly mixes in the effect of flash mixer, and is formed by core of little particle
Density is bigger, heavier flco, in favor of the rapid precipitation in sedimentation basin.
In order to remove the solid particle being mixed in sedimentation basin production water, set between sedimentation basin 172 and quartz filter 16
The solid particle that acid adding pond mixes to remove is put.
Pretreatment unit includes ion-exchange unit 15, and ion-exchange unit 15 includes Na-ion exchanger 151 and/or weak
Acid cation exchanger 152.
Preferably, ion-exchange unit include Na-ion exchanger and be arranged on the weak acid sun in Na-ion exchanger downstream from
Sub- exchanger.Sodium ion in Na-ion exchanger 151 is reacting with cations such as the calcium ion in sewage, magnesium ions
During, the hardness of sewage can only be reduced, the basicity of sewage can not be reduced.In order to reduce the basicity of sewage, handed in sodium ion
The downstream of parallel operation 151 is provided with weakly acidic cation exchanger 152.Weakly acidic cation exchanger 152 is during sewage is handled
Free acid is produced, the basicity of sewage can be effectively reduced.
After Weak-acid cation is handled, it is too low easily to there is pH value again for the sewage treated through Na-ion exchanger 151
Phenomenon.In order to solve this problem, the pH value of sewage is adjusted, weakly acidic cation exchanger 152 includes being used for into Weak-acid cation
Supplement the acid purification system of cation and the alkali regeneration for supplementing anion hydroxide ion into weakly acidic cation exchanger
System.
When the basicity of sewage is too high, can be mended by the caustic regeneration system of weakly acidic cation exchanger to Weak-acid cation
Anion is filled to adjust the pH value of sewage.The water quality of the sewage handled through ion-exchange unit is effectively improved, is improved anti-
Permeate the applicability of the processing system of dope.
Ion-exchange unit 15 includes weakly acidic cation exchanger 152, and ion-exchange unit 15 also includes being arranged on weak acid
The degassing tower 153 in the downstream of cation exchanger 152.Degassing tower 153 is used to remove the dirt after the processing of ion-exchange unit 15
Carbon dioxide in water.
In the present embodiment, Na-ion exchanger 151 includes being used for the Na-ion exchanger waste liquid outlet for exporting regeneration liquid waste,
Na-ion exchanger waste liquid outlet communicates with the import of evaporation crystallization equipment.Weakly acidic cation exchanger 152, Weak-acid cation are handed over
Parallel operation 152 includes being used for the weakly acidic cation exchanger waste liquid outlet for exporting regeneration liquid waste, and weakly acidic cation exchanger waste liquid goes out
The import of mouth evaporation crystallization equipment communicates.The regeneration liquid waste of Na-ion exchanger 151 and weakly acidic cation exchanger 152 is conveyed
It is further processed to evaporation crystallization equipment, improves reutilization of the sewage rate.
Ion-exchange unit 15 also includes being used for the ion exchange clear water tanks for storing the purified water after degassed tower 153 is handled
154 and the pipeline that is communicated with the regenerative system of Na-ion exchanger 151 of connection ion exchange clear water tanks 154.Na-ion exchanger
151 regenerative processes come from ion exchange clear water tanks with water.
Ion-exchange unit also includes being used for the backwash for collecting Na-ion exchanger 151 and weakly acidic cation exchanger 152
The wastewater collection pond 155 of backwash waste caused by process.Import of the outlet of wastewater collection pond 155 with adjusting water pot 19 mutually passes to
Backwash waste in wastewater collection pond is delivered to regulation water pot.Waste water in wastewater collection pond 155 is again passed by into counter-infiltration
The purified treatment of the processing system of dope, it further increasing Sewage treatment rate.
A part is used for the regenerative process of Na-ion exchanger 151 in purified water in ion exchange clear water tanks 154, another
Part is transported to ultrafiltration apparatus 14 and does further purified treatment.The ultrafiltration that ultrafiltration apparatus includes being used to export ultrafiltration concentrated water is dense
Water out, import of the ultrafiltration concentrated water outlet with adjusting water pot 19 communicate.Tune is delivered to through caused ultrafiltration concentrated water in ultra-filtration process
Water saving tank 19 is so that the clean units at different levels of its processing system through counter-infiltration dope again to be handled again.It further increasing
Sewage treatment rate.
Ultrafiltration apparatus 14 includes ultrafiltration main body 141 and the ultrafiltration water tank for collecting the water after the purification of ultrafiltration main body 141
142.Ultrafiltration water tank 142 includes the outlet of the water after the purification of ultrafiltration main body with water output.The outlet and cartridge filter 13
Connected between import by connecting line.It is provided with the connecting line and adds for adding the alkali of alkaline matter into connecting line
Medicine import and the antisludging agent dosing import for adding antisludging agent into connecting line.
Reverse osmosis treatment equipment is included to alkali medicine system and antisludging agent medicine system.Alkali medicine system is used for connecting tube
Alkaline matter is added in road to improve the pH value of the water treated cartridge filter 13 and handled in connecting line.Antisludging agent medicine system
Cause water route not smooth to prevent from producing incrustation scale in the processing system for adding antisludging agent into connecting line.
Cartridge filter 13 includes the cartridge filter pure water inlet for the purified water after output filtering.Cartridge filter
Pure water inlet communicates with the import of reverse osmosis treatment device 11.
The fine particles that cartridge filter 13 is used to go in water removal from Na-ion exchanger 151 and Weak-acid cation as handed over
The broken resin of parallel operation 152.Further, the water quality of purified water is improved.
As shown in Fig. 2 evaporation crystallization equipment includes evaporator 21, crystallizer 22 and mixing distillation water pot 23.
Evaporator 21 includes being used for the waste water inlet and use for being introduced into caused at least part waste water in reverse osmosis treatment equipment
The magma outlet of magma after evaporation process is exported.Crystallizer 22 includes magma import, and magma import communicates with magma outlet.
Mixing distillation water pot 23 communicates with evaporator 21 and crystallizer 22 and for collecting 22 outputs of evaporator 21 and crystallizer
Distilled water.
Evaporator includes evaporator body 211, heating steam inlet, material pot and vaporization chamber delivery port.Evaporator body
211 include housing and the heat exchanger tube being arranged in housing.Evaporator body 211 includes housing and the heat exchange being arranged in housing
Pipe.Heating steam inlet, which is mutually passed to housing to housing, introduces steam and the media for heat exchange in heat exchanger tube.Heat steam inlet with
Housing mutually passes to housing and introduces steam and the media for heat exchange in heat exchanger tube.
Material pot includes material pot waste water inlet, steam and salting liquid mixture intake, steam (vapor) outlet and liquid outlet, thing
Batch can waste water inlet forms the waste water inlet of evaporator, and steam and salting liquid mixture intake communicate with the outlet of heat exchanger tube, steams
Vapor outlet communicates with heating steam inlet, and liquid outlet communicates with the import of heat exchanger tube.
Heater, heater are used to heat the steam that the steam (vapor) outlet for having material pot is delivered to heating steam inlet.
Vaporization chamber delivery port, vaporization chamber delivery port are mutually passed to housing and exported by heating steam inlet into housing with changing
Distilled water in heat pipe after media for heat exchange, condensation-water drain communicate mixed so that the steam after heat exchange to be delivered to mixing distillation water pot
Close distillation water pot 23.
In the present embodiment, waste water to be evaporated is initially entered the material pot of evaporator 21 by material pot waste water inlet.Then,
Liquid outlet of the waste water to be evaporated through material pot enters the liquor preparation disk for being arranged on tube end, and liquor preparation disk is equal by waste water to be evaporated
It is distributed in evenly on the inner surface of heating tube.Waste water to be evaporated is during the inner surface flowing along heat exchanger tube, by by heating
Steam inlet is into the steam heating evaporation in housing and forms steam and salting liquid mixture.The steam and salting liquid mixture
Steam and salting liquid mixture intake through material pot are back to material pot.After again, steam is flowed out by the steam (vapor) outlet of material pot,
It is delivered to after heated device heating in the housing of evaporator body to heat the waste water to be evaporated in heat exchanger tube.Evaporation
Steam in device body casing body after the wastewater heat exchange to be evaporated in heat exchanger tube with being condensed into distilled water, then through vaporization chamber
Delivery port flow direction mixing distillation water pot.
In the present embodiment, the salting liquid after evaporation is back to material pot, then the liquid outlet conveying of material pot again
Evaporation process again in heat exchanger tube, effectively, improves Sewage treatment rate.The steam that steam (vapor) outlet through material pot is flowed out
Go to heat the waste water to be evaporated in heat exchanger tube after heating, take full advantage of the heat of steam, reduce energy consumption.
The evaporator for the upstream that evaporation crystallization equipment also includes being arranged on evaporator 21 enters water pot, enters water preheater 29 and enter
Water degassing device 28.Evaporator enters the import of the import formation evaporation crystallization equipment of water pot.Evaporator enters the outlet and water inlet of water pot
The import of water heater 29 communicates.The outlet of water inlet water heater 29 communicates with the import for deaerator 28 of intaking.Water inlet deaerator 28
Outlet communicates with the waste water inlet of evaporator 21.
Evaporation crystallization equipment also includes being used to guide the steam that the steam (vapor) outlet through material pot flows out into water preheater 29 into
Steam preheating to be evaporated waste water of the pipeline to be flowed out using the steam (vapor) outlet through material pot.Take full advantage of the heat of steam
Amount, reduces energy consumption.
Evaporation crystallization equipment also includes being used for the pipe that the steam that the steam (vapor) outlet through material pot flows out is guided into deaerator 28
Road is with the oxygen in the vapour removal water of steam (vapor) outlet outflow of the utilization through material pot.
Evaporator 21 also includes demister 213, and the import of demister 213 is used to introduce the steam (vapor) outlet outflow through material pot
The steam containing drop, the gas vent of demister 213 is used to export the steam after demisting, 213 gas vents of demister
Communicated with heater import.Demister eliminates the steam containing drop of the steam (vapor) outlet outflow through material pot, the drop
Salt dissolved with part, further increasing evaporation effect, reduce the salt content of purified water.
In the present embodiment, heater includes compressor 214, the import of compressor 214 and the gas vent of demister 213
Communicate, the outlet of compressor 214 communicates with heating steam inlet.
Crystallizer includes crystallizer body 221, forced circulation heat exchanger 222, circulating pump and condenser 223.Crystallizer sheet
Body 221 includes the import of crystallizer body magma, the outlet of crystallizer body magma and crystallizer steam (vapor) outlet.Forced circulation heat exchanger
Including magma pipeline, magma pipeline is serially connected between crystallizer body magma import and the outlet of crystallizer body magma.Circulating pump
It is serially connected between crystallizer body magma import and the outlet of crystallizer body magma.Condenser 223 enters including condenser vapor
Mouth and leaving condenser water mouth, leaving condenser water mouth communicate with mixing distillation water pot.
In the present embodiment, the magma import of crystallizer is arranged on the magma pipeline of connection forced circulation heat exchanger and brilliant device sheet
On pipeline between body magma import.Magma to be crystallized enters crystallizer through magma import first, then in the work of circulating pump
The circulation between forced circulation heat exchanger and crystallizer body is realized under.
Crystallizer also includes magma outlet and centrifugal dehydrator 224.Magma is exported for exporting the concentration after crystallization treatment
Magma.Centrifugal dehydrator 224 includes concentration magma import and centrifugal dehydrator filtrate (liquid, and concentration magma import exports with magma
Communicate, the magma import of centrifugal dehydrator filtrate (liquid and crystallizer 22, which mutually passes to, returns filtrate caused by centrifugal dehydrator 224
Magma import is back to crystallization treatment again.
Preferably, centrifugal dehydrator is centrifugal dehydrator.Centrifugal dehydrator is taken off the concentration magma after crystallization treatment
Water process.Then the water deviate from dehydration is delivered to the contracting magma import of dense crystallizer.By what is obtained in dehydration
Water conveys magma import to carry out crystallization treatment again.Further, the rate of recovery is improved.
At least a portion of concentration magma after crystallization treatment carries out removing crystal salt treatment into dewaterer.By to part
Concentration magma do dewater treatment and can adjust the close of magma in crystallizer to remove the filter cake being made up of crystal salt after dehydration
Degree.
A part of COD discharges of liquid entrainment contained in the filter cake of formation, prevent that COD and magnesium salts added up in crystallizing tank
It is high.COD and the too high viscosity and the elevation of boiling point that can cause magma of magnesium ion, reduce the disposal ability of system.
Evaporation crystallization equipment also includes the first stripping unit 24, and the import of the first stripping unit 24 is with mixing distillation water pot 23
Communicate.
Prime minister heats NaOH into the distilled water after evaporator 21 and crystallizer 22 are handled, and the pH value of distilled water is adjusted
To 11 or so, then the free ammonia aeration in water is come out by air stripping, while can also be by most volatilization in water
The organic matter of property stripping from water comes out.
Evaporation crystallization equipment also includes the filter element 25 for being arranged on the downstream of the first stripping unit 24.
Evaporation crystallization equipment also includes being used for the second strongly-acid cation exchanger 26 for removing the ammonium ion in distilled water,
The import of second strongly-acid cation exchanger 26 communicates with mixing distillation water pot 23.
Preferably, the second strongly-acid cation exchanger 26 is arranged on the downstream of filter element 25.
In the present embodiment, filter element 25 filters the active carbon filter of impurities in water using activated carbon.First
Distilled water in stripping unit by stripping processing is pumped to active carbon filter further to purify.Due to the first stripping unit
24 come out ammonia, the volatile organic matter of nitrogen and part stripping from distilled water, reduce activated carbon filter element
Load, so as to extend the regeneration period in the adsorption saturation cycle of activated carbon and the second strong-acid cation crosspoint.
Second strongly-acid cation exchanger 26 includes being used to export producing in the second strongly-acid cation exchanger regenerative process
Regenerative wastewater regenerative wastewater outlet, regenerative wastewater outlet communicated with the magma import of evaporator.
Evaporation crystallization equipment also includes the second stripping unit 27, and the import of the second stripping unit 27 is handed over the second strong-acid cation
The wastewater outlet of parallel operation 26 communicates, and the outlet of the second stripping unit 27 communicates with the magma import of evaporator 21.
Ammonium is very high from containing quantum in the regenerative wastewater of second strong-acid cation ion-exchanger, the second stripping unit 27
Very low power consumption and medicine is needed to use to consume can and remove the ammonia in water, nitrogen.Regenerative wastewater after stripping is entered again
Entering to evaporator, so can both be lowered into the ammonia-nitrogen content of evaporator, can also reduce the ammonia nitrogen of distilled water stripping unit
Load, so as to improve distilled water product water water quality.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (17)
1. a kind of processing system of counter-infiltration dope, it is characterised in that the processing system includes：
Reverse osmosis treatment equipment, the reverse osmosis treatment equipment include pretreatment unit and are arranged on the pretreatment unit downstream
Reverse osmosis treatment device (11), the pretreatment unit include set gradually from upstream to downstream depositing reservoir (17), quartz
Sand filter (16), ion-exchange unit (15), ultrafiltration apparatus (14) and cartridge filter (13), the ion-exchange unit
(15) it is used for the hardness for reducing water；
Evaporation crystallization equipment, the evaporation crystallization equipment are connected with the reverse osmosis treatment equipment to purify at the counter-infiltration
Manage equipment and handle caused at least part of waste water during the counter-infiltration dope；
Wherein, the evaporation crystallization equipment includes：
Evaporator (21), the evaporator (21) include giving up for being introduced into caused at least part in the reverse osmosis treatment equipment
The waste water inlet of water and the evaporator magma outlet for exporting the magma after evaporation process；
Crystallizer (22), the crystallizer (22) include crystallizer magma import, the crystallizer magma import and the evaporation
The evaporator magma outlet of device (21) communicates；
Mixing distillation water pot (23), the mixing distillation water pot (23) and the evaporator (21) and the crystallizer (22) are homogeneous
Pass to the distilled water for collecting the evaporator (21) and the crystallizer (22) institute output；
Wherein, the evaporator includes：
Evaporator body (211), the evaporator body (211) include housing and the heat exchanger tube being arranged in the housing；
Steam inlet is heated, the heating steam inlet is mutually passed to the housing with the housing introduces steam and the heat exchange
Media for heat exchange in pipe；
Material pot, the material pot include material pot waste water inlet, steam and salting liquid mixture intake, steam (vapor) outlet and liquid
Outlet, the material pot waste water inlet form the waste water inlet of the evaporator, and steam and the salting liquid mixture enters
Mouth communicates with the outlet of the heat exchanger tube, and the steam (vapor) outlet communicates with the heating steam inlet, the liquid outlet and institute
The import for stating heat exchanger tube communicates；
Heater, the heater is used to heat is delivered to the heating steam inlet by the steam (vapor) outlet of the material pot
Steam；
Vaporization chamber delivery port, the vaporization chamber delivery port mutually pass to output with the housing and enter institute by the heating steam inlet
That states housing mixes distillation water pot with the distilled water after media for heat exchange in the heat exchanger tube, the vaporization chamber delivery port with described
(23) mutually pass to and the steam after the heat exchange is delivered to the mixing distillation water pot (23).
2. processing system according to claim 1, it is characterised in that the reverse osmosis treatment device (11) is included for defeated
Go out the concentrated water outlet of reverse osmosis concentrated water, the concentrated water outlet communicates with the import of the evaporation crystallization equipment.
3. processing system according to claim 1, it is characterised in that the reverse osmosis treatment equipment also includes being arranged on institute
State the ammonium root being used to remove in the water of the reverse osmosis treatment device (11) output in the downstream of reverse osmosis treatment device (11) from
The first strongly-acid cation exchanger (12) of son.
4. processing system according to claim 3, it is characterised in that first strongly-acid cation exchanger (12) includes
The first strongly-acid cation exchanger regeneration liquid waste for exporting the caused regeneration liquid waste in regenerative process exports, and described first
The outlet of strongly-acid cation exchanger regeneration liquid waste communicates with the import of the evaporation crystallization equipment.
5. processing system according to claim 1, it is characterised in that the depositing reservoir (17) includes：
Flocculation basin (171)；
Sedimentation basin (172), the sedimentation basin (172) are arranged on the downstream of the flocculation basin (171)；
Sediment reflux, the sediment reflux are used to convey at least part of sediment in the sedimentation basin
To the flocculation basin (171) to be used as the nuclei of condensation.
6. processing system according to claim 1 or 5, it is characterised in that the pretreatment unit is handed over including the ion
Exchange device (15), the ion-exchange unit (15) include Na-ion exchanger (151) and/or weakly acidic cation exchanger
(152)。
7. processing system according to claim 6, it is characterised in that the ion-exchange unit (15) include weak acid sun from
Sub- exchanger (152), the ion-exchange unit (15) also include the downstream for being arranged on the weakly acidic cation exchanger (152)
Degassing tower (153).
8. processing system according to claim 6, it is characterised in that the ion-exchange unit (15) includes：
Na-ion exchanger (151), the Na-ion exchanger (151) include being used for the Na-ion exchanger for exporting regeneration liquid waste
Waste liquid outlet, the Na-ion exchanger waste liquid outlet communicate with the import of the evaporation crystallization equipment；And/or
Weakly acidic cation exchanger (152), the weakly acidic cation exchanger (152) include being used to export regeneration liquid waste
Weakly acidic cation exchanger waste liquid outlet, evaporation crystallization equipment enters described in the weakly acidic cation exchanger waste liquid outlet
Mouth communicates.
9. processing system according to claim 1, it is characterised in that the evaporator (21) also includes demister (213),
The import of the demister (213) is connected with the steam (vapor) outlet of the material pot, and the gas of the demister (213) goes out
Mouth is used to export the steam after demisting, and the gas vent of the demister (213) enters with the heating steam of the evaporator
Mouth communicates.
10. processing system according to claim 9, it is characterised in that the heater includes compressor (214), institute
The import for stating compressor (214) communicates with the gas vent of the demister (213), the outlet of the compressor (214) and institute
Heating steam inlet is stated to communicate.
11. processing system according to claim 1, it is characterised in that the crystallizer (22) includes：
Crystallizer body (221), the crystallizer body (221) include the import of crystallizer body magma, crystallizer body magma
Outlet and crystallizer steam (vapor) outlet；
Forced circulation heat exchanger (222), the forced circulation heat exchanger include magma pipeline, and the magma pipeline is serially connected with described
Between crystallizer body magma import and crystallizer body magma outlet；
Circulating pump, the circulating pump is serially connected with exports it in the crystallizer body magma import and the crystallizer body magma
Between；
Condenser (223), the condenser (223) include condenser vapor import and leaving condenser water mouth, and the condenser goes out
The mouth of a river communicates with the mixing distillation water pot (23).
12. processing system according to claim 1, it is characterised in that the crystallizer (22) also includes：
Crystallizer magma is exported, and the crystallizer magma is exported for exporting the concentration magma after crystallization treatment；
Centrifugal dehydrator (224), the centrifugal dehydrator (224) include concentration magma import and centrifugal dehydrator filtrate (liquid,
The concentration magma import communicates with the outlet of crystallizer magma, the centrifugal dehydrator filtrate (liquid and the crystallizer (22)
The crystallizer magma import mutually passes to is back to the crystallizer with again by filtrate caused by the centrifugal dehydrator (224)
Crystallization treatment.
13. processing system according to claim 1, it is characterised in that the evaporation crystallization equipment also includes the first stripping
Unit (24), the import of the first stripping unit (24) communicate with the mixing distillation water pot (23).
14. processing system according to claim 13, it is characterised in that the evaporation crystallization equipment also includes being arranged on institute
State the active carbon filter (25) in the downstream of the first stripping unit (24).
15. processing system according to claim 1, it is characterised in that the evaporation crystallization equipment also includes being used to remove
Ammonium ion in distilled water removes ammonia unit, and the import except ammonia unit communicates with the mixing distillation water pot (23).
16. processing system according to claim 15, it is characterised in that described except ammonia unit includes the second strong-acid cation
Exchanger, second strongly-acid cation exchanger include being used to export producing in the second strongly-acid cation exchanger regenerative process
Regenerative wastewater regenerative wastewater outlet, regenerative wastewater outlet communicates with the evaporator magma import.
17. processing system according to claim 16, it is characterised in that the evaporation crystallization equipment also includes the second stripping
Unit (27), the second stripping unit (27) import and the wastewater outlet of second strongly-acid cation exchanger (26)
Communicate, the outlet of the second stripping unit (27) communicates with the evaporator magma import of the evaporator (21).
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| CN106082275B (en) * | 2016-06-13 | 2017-11-10 | 神华集团有限责任公司 | A kind of salt extraction process and salt making system |
| CN106115740B (en) * | 2016-06-13 | 2017-06-30 | 神华集团有限责任公司 | A kind of salt extraction process and salt making system |
| CN106745980A (en) * | 2016-12-15 | 2017-05-31 | 北京锦龙科技有限公司 | A kind of multi-cavity type integration concentrated water treatment reactor |
| US11046593B2 (en) | 2018-12-16 | 2021-06-29 | Greentech Environment Co., Ltd. | System for treating reverse-osmosis concentrated water with permanent hardness |
| CN109592815A (en) * | 2018-12-16 | 2019-04-09 | 金科环境股份有限公司 | The processing system of reverse osmosis concentrated water with high permanent hardness |
| CN110028189A (en) * | 2019-05-07 | 2019-07-19 | 国家能源投资集团有限责任公司 | Strong brine divides salt device |
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