CN204824503U - Processing system of reverse osmosis dope - Google Patents
Processing system of reverse osmosis dope Download PDFInfo
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- CN204824503U CN204824503U CN201520533370.1U CN201520533370U CN204824503U CN 204824503 U CN204824503 U CN 204824503U CN 201520533370 U CN201520533370 U CN 201520533370U CN 204824503 U CN204824503 U CN 204824503U
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Abstract
The utility model provides a processing system of reverse osmosis dope. Processing system of reverse osmosis dope includes that reverse osmosis treatment equipment and evaporation crystallization equipment, reverse osmosis treatment equipment include preprocessing device and set up the reverse osmosis treatment device in the preprocessing device low reaches that evaporation crystallization equipment is linked together with reverse osmosis treatment equipment and is arranged in purifying the at least partial waste water that reverse osmosis treatment equipment produced. Use the technical scheme of the utility model, with the at first process reverse osmosis processing of reverse osmosis dope, then through evaporation crystallization process, the reverse osmosis dope has been purified effectively.
Description
Technical field
The utility model relates to sewage treatment equipment field, more specifically, relates to a kind for the treatment of system of reverse osmosis dope.
Background technology
Olefin hydrocarbon making by coal technology worldwide received much concern in recent years.About the dope waste water that the saline sewage of olefin hydrocarbon making by coal project produces through conventional reverse osmosis, there is no effective treatment process at present.
Utility model content
The utility model aims to provide a kind for the treatment of system of reverse osmosis dope, the reverse osmosis dope produced through conventional reverse osmosis with the saline sewage effectively purifying olefin hydrocarbon making by coal project.
To achieve these goals, the utility model provides a kind for the treatment of system of reverse osmosis dope, and treatment system comprises: reverse osmosis treatment equipment, and reverse osmosis treatment equipment comprises pretreatment unit and is arranged on the reverse osmosis treatment device in pretreatment unit downstream; Evaporation crystallization equipment, evaporation crystallization equipment is connected with reverse osmosis treatment equipment to purify at least part of waste water produced in the process of reverse osmosis treatment equipment process reverse osmosis dope.
Further, reverse osmosis treatment device comprises the dense water out for exporting reverse osmosis concentrated water, and dense water out communicates with the import of evaporation crystallization equipment.
Further, reverse osmosis treatment equipment also comprises first strongly-acid cation exchanger for removing the ammonium radical ion in the water of reverse osmosis treatment device output in the downstream being arranged on reverse osmosis treatment device.
Further, first strongly-acid cation exchanger comprises the first strongly-acid cation exchanger regeneration waste liquid outlet for exporting the regeneration waste liquid produced in regenerative process, and the first strongly-acid cation exchanger regeneration waste liquid outlet communicates with the import of evaporation crystallization equipment.
Further, pretreatment unit comprises: settling pond, and settling pond is arranged on the upstream of reverse osmosis treatment device; And/or, quartz filter, quartz filter is arranged on the upstream of reverse osmosis treatment device; And/or, ion-exchange unit, ion-exchange unit is arranged on the upstream of reverse osmosis treatment device, and ion-exchange unit is for reducing water hardness; And/or, ultrafiltration apparatus, ultrafiltration apparatus is arranged on reverse osmosis treatment device upstream; And/or cartridge filter, cartridge filter is arranged on reverse osmosis treatment device upstream.
Further, pretreatment unit comprises the settling pond, quartz filter, ion-exchange unit, ultrafiltration apparatus, cartridge filter and the reverse osmosis treatment device that set gradually to downstream from upstream.
Further, settling pond comprises: flocculation basin; Settling tank, settling tank is arranged on the downstream of flocculation basin; Throw out reflux, throw out reflux is used at least part of throw out in settling tank to be delivered to flocculation basin using as the nucleus of condensation.
Further, pretreatment unit comprises ion-exchange unit, and ion-exchange unit comprises Na-ion exchanger and/or weakly acidic cation exchanger.
Further, ion-exchange unit comprises weakly acidic cation exchanger, and ion-exchange unit also comprises the degassing tower in the downstream being arranged on weakly acidic cation exchanger.
Further, ion-exchange unit comprises: Na-ion exchanger, and Na-ion exchanger comprises the Na-ion exchanger waste liquid outlet for exporting regeneration waste liquid, and Na-ion exchanger waste liquid outlet communicates with the import of evaporation crystallization equipment; And/or weakly acidic cation exchanger, weakly acidic cation exchanger comprises the weakly acidic cation exchanger waste liquid outlet for exporting regeneration waste liquid, and the import of weakly acidic cation exchanger waste liquid outlet evaporation crystallization equipment communicates.
Further, evaporation crystallization equipment comprises: vaporizer, and vaporizer comprises the waste water inlet for introducing at least part of waste water produced in reverse osmosis treatment equipment and the vaporizer magma outlet for exporting the magma after evaporation process; Crystallizer, crystallizer comprises the import of crystallizer magma, and the import of crystallizer magma exports with the vaporizer magma of vaporizer and communicates; Mixing distillation water pot, mixing is distilled water pot and vaporizer and crystallizer homogeneous phase and is passed to the distilled water collecting vaporizer and crystallizer institute output.
Further, vaporizer comprises: evaporator body, and evaporator body comprises housing and is arranged on the heat transfer tube in housing; Heating steam import, heating steam import and housing pass to the media for heat exchange introduced to housing in steam and heat transfer tube mutually; Material pot, material pot comprises material pot waste water inlet, steam and salts solution mixture intake, vapour outlet and liquid exit, material pot waste water inlet forms the waste water inlet of vaporizer, steam and salts solution mixture intake communicate with the outlet of heat transfer tube, vapour outlet communicates with heating steam import, and liquid exit communicates with the import of heat transfer tube; Heating unit, heating unit is delivered to the steam of heating steam import by the vapour outlet of material pot for heating; Evaporator room water outlet, evaporator room water outlet and housing pass to mutually export enter housing by heating steam import with the heat exchange of heat transfer tube medium after distilled water, evaporator room water outlet and mixing distills water pot and are communicated and distill water pot the delivery of steam after heat exchange extremely to be mixed.
Further, vaporizer also comprises mist eliminator, and the import of mist eliminator is connected with the vapour outlet of material pot, and the pneumatic outlet of mist eliminator is for exporting the steam after demist, and the pneumatic outlet of mist eliminator communicates with the heating steam import of vaporizer.
Further, heating unit comprises compressor, and the import of compressor communicates with the pneumatic outlet of mist eliminator, and the outlet of compressor communicates with heating steam import.
Further, crystallizer comprises: crystallizer body, and crystallizer body comprises the import of crystallizer body magma, the outlet of crystallizer body magma and crystallizer vapour outlet; Pump circulation interchanger, pump circulation interchanger comprises magma pipeline, and magma pipeline is serially connected with between the magma import of crystallizer body and crystallizer body magma export; Recycle pump, recycle pump is serially connected with between the magma import of crystallizer body and crystallizer body magma export; Condenser, condenser comprises condenser vapor import and leaving condenser water mouth, and leaving condenser water mouth distills water pot with mixing and communicates.
Further, crystallizer also comprises: crystallizer magma exports, and the outlet of crystallizer magma is for exporting the concentrated magma after crystallization treatment; Heart water extracter comprises concentrated magma import and centrifuge filtrate outlet, concentrated magma import exports with crystallizer magma and communicates, and centrifuge filtrate outlet and the crystallizer magma import of crystallizer pass to mutually and the filtrate that centrifuge produces be back to crystallizer with crystallization treatment again.
Further, evaporation crystallization equipment also comprises the first stripping unit, and the import of the first stripping unit is distilled water pot with mixing and communicated.
Further, evaporation crystallization equipment also comprises the activated charcoal filter in the downstream being arranged on the first stripping unit.
Further, evaporation crystallization equipment also comprise for remove ammonium radical ion in distilled water except ammonia unit, except the import of ammonia unit is distilled water pot and communicated with mixing.
Further, except ammonia unit comprises the second strongly-acid cation exchanger, second strongly-acid cation exchanger comprises the regenerative wastewater outlet for exporting the regenerative wastewater produced in the second strongly-acid cation exchanger regenerative process, and regenerative wastewater outlet communicates with the import of vaporizer magma.
Further, evaporation crystallization equipment also comprises the second stripping unit, and the second stripping unit inlet communicates with the wastewater outlet of the second strongly-acid cation exchanger, and the outlet of the second stripping unit communicates with the vaporizer magma import of vaporizer.
Application the technical solution of the utility model, the treatment system of reverse osmosis dope comprises reverse osmosis treatment equipment and evaporation crystallization equipment, reverse osmosis treatment equipment comprises 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 for purifying at least part of waste water produced in reverse osmosis treatment equipment.Application the technical solution of the utility model, by reverse osmosis dope first through reverse-osmosis treated, then through evaporative crystallization process, has purified reverse osmosis dope effectively.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows the structural representation of the treatment system of reverse osmosis dope of the present utility model;
Fig. 2 shows the structural representation of the treatment system of the reverse osmosis dope of the second embodiment of the present utility model.
Reference numeral: 11, reverse osmosis treatment device; 111, first paragraph reverse-osmosis treated portion; 112, second segment reverse-osmosis treated portion; 113, reverse osmosis purified water case; 114, reverse osmosis waste water tank; 12, the first strongly-acid cation exchanger; 13, cartridge filter; 14, ultrafiltration apparatus; 141, ultrafiltration main body; 142, ultrafiltration water tank; 15, ion-exchange unit; 151, Na-ion exchanger; 152, weakly acidic cation exchanger; 153, degassing tower; 154, ion-exchange clear water tanks; 155, wastewater collection pond; 16, quartz filter; 17, settling pond; 171, flocculation basin; 172, settling tank; 173, soda ash stake pond; 174, lime stake pond; 175, coagulation basin; 18, regenerated liquid pool; 19, water pot is regulated; 21, vaporizer; 211, evaporator body; 213, mist eliminator; 214, compressor; 22, crystallizer; 221, crystallizer body; 222, pump circulation interchanger; 223, condenser; 224, centrifuge; 23, mixing distillation water pot; 24, the first stripping unit; 25, filtering unit; 26, the second strongly-acid cation exchanger; 27, the second stripping unit; 28, water inlet degasifier; 29, water inlet preheater.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
As depicted in figs. 1 and 2, the treatment system of the reverse osmosis dope of the utility model embodiment comprises reverse osmosis treatment equipment and evaporation crystallization equipment.Reverse osmosis treatment equipment comprises pretreatment unit and is arranged on the reverse osmosis treatment device 11 in pretreatment unit downstream.Evaporation crystallization equipment is connected with reverse osmosis treatment equipment and for purifying at least part of waste water produced in reverse osmosis treatment equipment.
In the present embodiment, by the dope waste water that saline sewage in olefin hydrocarbon making by coal project produces through conventional reverse osmosis, first again purify through reverse osmosis treatment device 11, at least part of waste water produced in above-mentioned scavenging process is for further processing through evaporation crystallization equipment.Achieve and saline sewage in olefin hydrocarbon making by coal project to be given up water purification through the dope that conventional reverse osmosis produces, improve waste water reclamation reuse ratio.
Reverse osmosis unit comprises the dense water out of reverse osmosis unit for exporting reverse osmosis concentrated water, and the dense water out of reverse osmosis unit communicates with the import of evaporation crystallization equipment.
In the present embodiment, reverse osmosis treatment device comprises first paragraph reverse-osmosis treated portion 111, second segment reverse-osmosis treated portion 112, reverse osmosis purified water case 113 and reverse osmosis waste water tank 114.First paragraph reverse-osmosis treated portion and second segment reverse-osmosis treated portion include reverse osmosis membrane.
The import in first paragraph reverse-osmosis treated portion 111 forms the import of reverse osmosis treatment device 11.First paragraph reverse-osmosis treated portion 111 also comprises the dense water out of first paragraph reverse-osmosis treated portion's pure water inlet and first paragraph reverse osmosis portion.First paragraph reverse-osmosis treated portion pure water inlet communicates with reverse osmosis purified water case 113.The dense water out in first paragraph reverse osmosis portion and the import in second segment reverse-osmosis treated portion 112 pass to mutually and the dense water that first paragraph reverse-osmosis treated portion 111 produces is delivered to second segment reverse-osmosis treated portion 112 carries out reverse-osmosis treated.
Second segment reverse-osmosis treated portion 112 comprises the dense water out in second segment reverse-osmosis treated portion and second segment reverse-osmosis treated portion pure water inlet.The dense water out in second segment reverse-osmosis treated portion forms the dense water out of reverse osmosis unit.The dense water out in second segment reverse-osmosis treated portion 112 communicates with reverse osmosis waste water tank.The outlet of reverse osmosis waste water tank and the import of evaporation crystallization equipment pass to the dense water produced by reverse osmosis unit mutually and are delivered to evaporation crystallization equipment.Second segment reverse-osmosis treated portion pure water inlet communicates with reverse osmosis purified water case 113.
The reverse osmosis treatment device of the present embodiment, by the reverse-osmosis treated through twice to be clean, effectively improves waste water reclamation rate, reduces the waste of resource.
Reverse osmosis treatment equipment also comprises first strongly-acid cation exchanger 12 for removing the ammonium radical ion in the water of reverse osmosis treatment device output in the downstream being arranged on reverse osmosis treatment device.
In order to the ammonium radical ion to the existence of removing in the purifying waste water of reverse-osmosis treated, be provided with the first strongly-acid cation exchanger 12 in the downstream of reverse osmosis treatment device 11.The import of the first strongly-acid cation exchanger 12 communicates with the outlet of above-mentioned reverse osmosis purified water case 113.
First strongly-acid cation exchanger 12 comprises the first strongly-acid cation exchanger regeneration waste liquid outlet for exporting the regeneration waste liquid produced in regenerative process, and the first strongly-acid cation exchanger regeneration waste liquid outlet communicates with the import of evaporation crystallization equipment.
First strongly-acid cation exchanger 12 comprises for supplementing the cationic acid purification system in the first strongly-acid cation exchanger 12 and the first strongly-acid cation exchanger regeneration waste liquid outlet for exporting the regeneration waste liquid in regenerative process.
Reverse osmosis treatment equipment also comprises the regenerated liquid pool 18 for collecting regeneration waste liquid.First strongly-acid cation exchanger regeneration waste liquid outlet communicates with the import of regenerated liquid pool 18.The outlet of regenerated liquid pool 18 communicates with the import of evaporation crystallization equipment.
The pretreatment unit of the present embodiment comprises cartridge filter 13, ultrafiltration apparatus 14, ion-exchange unit 15, quartz filter 16 and settling pond 17.Cartridge filter 13, ultrafiltration apparatus 14, ion-exchange unit 15, quartz filter 16 and settling pond 17 are all arranged on the upstream of reverse osmosis treatment device 11.
In the present embodiment, also comprise with treatment unit the adjustment water pot 19 being arranged on settling pond 17 upstream.Regulate water pot 19 for the waste liquid of the part that mixes reverse osmosis dope to be clean and produce in the course of the work from reverse osmosis treatment equipment.
Settling pond 17, quartz filter 16, ion-exchange unit 15, ultrafiltration apparatus 14, cartridge filter 13 and reverse osmosis treatment device 11 set gradually to downstream from upstream.
Settling pond comprise set gradually to downstream from upstream coagulation basin 175, lime stake pond 174, soda ash stake pond 173, flocculation basin 171 and settling tank 172.
Settling pond 17 also comprises for the coagulating agent medicine system of dosing coagulant in coagulation basin 175 and coagulation basin agitator.Coagulant dosage in sewage after, with the suspended substance short mix in sewage under the effect of coagulation basin agitator, by and the negative charge on suspended particle surface make particle " de-steady ", form little flco and then enter flocculation basin.Phosphorus simultaneously in former water and coagulating agent reaction form the object that phosphoric acid salt reaches chemical dephosphorization.
Lime medicine system from feeding lime in pond 174 to lime and lime that settling pond 17 also comprises for betting bet pond agitator.Lime adds after in sewage, with the acidity of sewage in quick under the effect of lime stake pond agitator.
Soda ash medicine system and soda ash that settling pond 17 also comprises for adding soda ash in soda ash stake pond 173 bet pond agitator.Soda ash further regulates the pH value of sewage under the effect of agitator.
Settling pond 17 also comprises flocculation agent medicine system and flocculation basin agitator for adding soda ash in flocculation basin 171.The bridging action that flocculation agent impels the little flco in flocculation basin by adsorbing, electrical counteract is mutual forms larger flco, and the effect of agitator not only enables medicament and flco fully mix but also can not destroy established big flocculating body.
Settling tank 172 is arranged on the downstream of flocculation basin 171.Settling pond also comprises throw out reflux at least part of throw out in settling tank being delivered to flocculation basin 171 using as the nucleus of condensation.
At least part of short grained throw out be deposited in bottom settling tank is delivered in flocculation basin by throw out reflux.The little flco that small-particle and coagulation are formed in the effect short mix of flash mixer, and with small-particle be core formed density more greatly, heavier flco, be beneficial to the rapid precipitation in settling tank.
Producing to remove settling tank the solid particulate be mixed in water, between settling tank 172 and quartz filter 16, being provided with acid adding pond to remove the solid particulate mixed.
Pretreatment unit comprises ion-exchange unit 15, and ion-exchange unit 15 comprises Na-ion exchanger 151 and/or weakly acidic cation exchanger 152.
Preferably, ion-exchange unit comprises Na-ion exchanger and is arranged on the weakly acidic cation exchanger in Na-ion exchanger downstream.Sodium ion in Na-ion exchanger 151, in the process reacted with positively charged ions such as the calcium ion in sewage, magnesium ions, can only reduce dirty water hardness, can not reduce the basicity of sewage.In order to reduce the basicity of sewage, be provided with weakly acidic cation exchanger 152 in the downstream of Na-ion exchanger 151.Weakly acidic cation exchanger 152 produces free acid in the process of disposing of sewage, and effectively can reduce the basicity of sewage.
Again after Weak-acid cation process, easily there is the phenomenon that pH value is too low in the sewage processed through Na-ion exchanger 151.In order to head it off, regulate the pH value of sewage, weakly acidic cation exchanger 152 comprises for supplementing cationic acid purification system and the caustic regeneration system for supplementing negatively charged ion hydroxide ion in weakly acidic cation exchanger in Weak-acid cation.
When the basicity of sewage is too high, negatively charged ion can be supplemented to adjust the pH value of sewage by the caustic regeneration system of weakly acidic cation exchanger to Weak-acid cation.Effectively improve the water quality of the sewage through ion-exchange unit process, improve the suitability of the treatment system of reverse osmosis dope.
Ion-exchange unit 15 comprises weakly acidic cation exchanger 152, and ion-exchange unit 15 also comprises the degassing tower 153 in the downstream being arranged on weakly acidic cation exchanger 152.Degassing tower 153 is for removing carbonic acid gas in the sewage after ion-exchange unit 15 processes.
In the present embodiment, Na-ion exchanger 151 comprises the Na-ion exchanger waste liquid outlet for exporting regeneration waste liquid, and Na-ion exchanger waste liquid outlet communicates with the import of evaporation crystallization equipment.Weakly acidic cation exchanger 152, weakly acidic cation exchanger 152 comprises the weakly acidic cation exchanger waste liquid outlet for exporting regeneration waste liquid, and the import of weakly acidic cation exchanger waste liquid outlet evaporation crystallization equipment communicates.The regeneration waste liquid of Na-ion exchanger 151 and weakly acidic cation exchanger 152 is delivered to evaporation crystallization equipment and does further process, improve reutilization of the sewage rate.
Ion-exchange unit 15 also comprises for storing the ion-exchange clear water tanks 154 of purifying waste water after degassing tower 153 processes and the pipeline being communicated with the regeneration system rapidly of ion-exchange clear water tanks 154 with Na-ion exchanger 151 and communicating.The use water of Na-ion exchanger 151 regenerative process is from ion-exchange clear water tanks.
Ion-exchange unit also comprises the wastewater collection pond 155 of the backwash waste that the backwash process for collecting Na-ion exchanger 151 and weakly acidic cation exchanger 152 produces.The outlet in wastewater collection pond 155 passes to mutually with the import of adjustment water pot 19 and the backwash waste in wastewater collection pond is delivered to adjustment water pot.By the waste water in wastewater collection pond 155 again through the purifying treatment of the treatment system of reverse osmosis dope, further increasing waste water reclamation rate.
The regenerative process of a middle part for Na-ion exchanger 151 of purifying waste water in ion-exchange clear water tanks 154, another part is transported to ultrafiltration apparatus 14 and does purifying treatment further.Ultrafiltration apparatus comprises the dense water out of ultrafiltration for exporting the dense water of ultrafiltration, and the dense water out of ultrafiltration communicates with regulating the import of water pot 19.The dense water of the ultrafiltration produced in ultra-filtration process is delivered to and regulates water pot 19 it again again to be processed through the clean units at different levels of the treatment system of reverse osmosis dope.Further increasing waste water reclamation rate.
Ultrafiltration apparatus 14 comprises ultrafiltration main body 141 and the ultrafiltration water tank 142 for collecting the water after ultrafiltration main body 141 purifies.Ultrafiltration water tank 142 comprises the outlet exporting the water after the purification of ultrafiltration main body with water.Be connected by connecting pipeline between this outlet with the import of cartridge filter 13.This connecting pipeline is provided with the alkali dosing import for adding alkaline matter in connecting pipeline and the Scale inhibitors dosing import for adding Scale inhibitors in connecting pipeline.
Reverse osmosis treatment equipment comprises to alkali medicine system and Scale inhibitors medicine system.Alkali medicine system is used in connecting pipeline, adding alkaline matter to improve the pH value treating the water that cartridge filter 13 processes in connecting pipeline.Scale inhibitors medicine system is used in connecting pipeline, add Scale inhibitors and causes water route not smooth to prevent from producing incrustation scale in the processing system.
Cartridge filter 13 comprises the cartridge filter pure water inlet of purifying waste water after for output filtering.Cartridge filter pure water inlet communicates with the import of reverse osmosis treatment device 11.
Cartridge filter 13 is for removing fine particles in water as the resin of the fragmentation from Na-ion exchanger 151 and weakly acidic cation exchanger 152.Further, improve the water quality of purifying waste water.
As shown in Figure 2, evaporation crystallization equipment comprises vaporizer 21, crystallizer 22 and mixing distillation water pot 23.
Vaporizer 21 comprises the waste water inlet for introducing at least part of waste water produced in reverse osmosis treatment equipment and the magma outlet for exporting the magma after evaporation process.Crystallizer 22 comprises magma import, and magma import exports with magma and communicates.Mixing distillation water pot 23 all communicates with vaporizer 21 and crystallizer 22 and distilled water for collecting vaporizer 21 and crystallizer 22 outputs.
Vaporizer comprises evaporator body 211, heating steam import, material pot and evaporator room water outlet.Evaporator body 211 comprises housing and is arranged on the heat transfer tube in housing.Evaporator body 211 comprises housing and is arranged on the heat transfer tube in housing.Heating steam import and housing pass to the media for heat exchange introduced to housing in steam and heat transfer tube mutually.Heating steam import and housing pass to the media for heat exchange introduced to housing in steam and heat transfer tube mutually.
Material pot comprises material pot waste water inlet, steam and salts solution mixture intake, vapour outlet and liquid exit, material pot waste water inlet forms the waste water inlet of vaporizer, steam and salts solution mixture intake communicate with the outlet of heat transfer tube, vapour outlet communicates with heating steam import, and liquid exit communicates with the import of heat transfer tube.
Heating unit, heating unit is for heating the steam having the vapour outlet of material pot to be delivered to heating steam import.
Evaporator room water outlet, evaporator room water outlet and housing pass to mutually export enter housing by heating steam import with the heat exchange of heat transfer tube medium after distilled water, condensation-water drain and mixing distills water pot and are communicated and distill water pot 23 the delivery of steam after heat exchange extremely to be mixed.
In the present embodiment, first waste water to be evaporated enter the material pot of vaporizer 21 by material pot waste water inlet.Then, waste water to be evaporated enters through the liquid exit of material pot the liquor preparation disk being arranged on tube end, and waste water to be evaporated is distributed on the internal surface of heating tube by liquor preparation disk equably.Waste water to be evaporated, in the process flowed along the internal surface of heat transfer tube, is evaporated by the steam heating entered in housing by heating steam import and forms steam and salts solution mixture.This steam and salts solution mixture are back to material pot through the steam of material pot and salts solution mixture intake.Again, steam is flowed out by the vapour outlet of material pot, is positioned at the waste water to be evaporated of heat transfer tube after heating devices heat in the housing being delivered to evaporator body with heating.Be condensed into distilled water after steam in evaporator body housing and the wastewater heat exchange to be evaporated being positioned at heat transfer tube, then flow to mixing distillation water pot through evaporator room water outlet.
In the present embodiment, the salts solution after evaporation is back to material pot, and then the liquid exit of material pot to be delivered in heat transfer tube evaporation process again, effectively, improves waste water reclamation rate.Heating the waste water to be evaporated in heat transfer tube by going after the steam heating that the vapour outlet of material pot flows out, taking full advantage of the heat of steam, reducing energy consumption.
Evaporation crystallization equipment also comprises the vaporizer water inlet tank of the upstream being arranged on vaporizer 21, intake preheater 29 and water inlet degasifier 28.The import of vaporizer water inlet tank forms the import of evaporation crystallization equipment.The outlet of vaporizer water inlet tank communicates with the import of water inlet water-heater 29.The outlet of water inlet water-heater 29 communicates with the import of water inlet degasifier 28.The outlet of water inlet degasifier 28 communicates with the waste water inlet of vaporizer 21.
The evaporation crystallization equipment steam also comprised for being flowed out by the vapour outlet through material pot guides pipeline into water preheater 29 into the waste water utilizing the steam preheating that flows out through the vapour outlet of material pot to be evaporated.Take full advantage of the heat of steam, reduce energy consumption.
Oxygen in the vapour removal water that the evaporation crystallization equipment steam also comprised for being flowed out by the vapour outlet through the material pot pipeline of guiding degasifier 28 into flows out with the vapour outlet utilized through material pot.
Vaporizer 21 also comprises mist eliminator 213, the steam containing drop that the import of mist eliminator 213 is flowed out for the vapour outlet introduced through material pot, the pneumatic outlet of mist eliminator 213 is for exporting the steam after demist, and 213 pneumatic outlets of mist eliminator communicate with heating unit import.The steam containing drop that the mist eliminator vapour outlet eliminated through material pot flows out, this drop is dissolved with the salt of part, further increasing evaporation effect, reduces the saltiness of purifying waste water.
In the present embodiment, heating unit comprises compressor 214, and the import of compressor 214 communicates with the pneumatic outlet of mist eliminator 213, and the outlet of compressor 214 communicates with heating steam import.
Crystallizer comprises crystallizer body 221, pump circulation interchanger 222, recycle pump and condenser 223.Crystallizer body 221 comprises the import of crystallizer body magma, the outlet of crystallizer body magma and crystallizer vapour outlet.Pump circulation interchanger comprises magma pipeline, and magma pipeline is serially connected with between the magma import of crystallizer body and crystallizer body magma export.Recycle pump is serially connected with between the magma import of crystallizer body and crystallizer body magma export.Condenser 223 comprises condenser vapor import and leaving condenser water mouth, and leaving condenser water mouth distills water pot with mixing and communicates.
In the present embodiment, the magma import of crystallizer is arranged on the pipeline between the magma pipeline of connection pump circulation interchanger and the import of brilliant device body magma.First magma to be crystallized enters crystallizer through magma import, under the effect of recycle pump, then achieve the circulation between pump circulation interchanger and crystallizer body.
Crystallizer also comprises magma outlet and centrifuge 224.Magma outlet is for exporting the concentrated magma after crystallization treatment.Centrifuge 224 comprises concentrated magma import and centrifuge filtrate outlet, concentrated magma import exports with magma and communicates, and centrifuge filtrate outlet and the magma import of crystallizer 22 pass to mutually and the filtrate that centrifuge 224 produces be back to magma import with crystallization treatment again.
Preferably, centrifuge is centrifuge.Concentrated magma after crystallization treatment is carried out processed by centrifuge.Then the water deviate from dehydration is delivered to the contracting magma import of dense crystallizer.By the import of the water obtained in dehydration conveying magma again to carry out crystallization treatment.Further, improve the rate of recovery.
The water extracter that enters at least partially of the concentrated magma after crystallization treatment carries out except crystalline salt process.By doing processed to the concentrated magma of part to remove the density that the filter cake be made up of crystal salt after dewatering can regulate magma in crystallizer.
The liquid entrainment part COD contained in the filter cake formed discharges, and prevents COD and magnesium salts in crystallizer from adding up too high.COD and the too high meeting of magnesium ion cause viscosity and the elevation of boiling point of magma, reduce the processing power of system.
The import that evaporation crystallization equipment also comprises the first stripping unit 24, first stripping unit 24 is distilled water pot 23 with mixing and is communicated.
Prime minister heats NaOH in the distilled water after vaporizer 21 and crystallizer 22 process, the pH value of distilled water is adjusted to about 11, then by air stripping by the free ammonia stripping in water out, simultaneously also can from water, stripping be out by volatile organism most in water.
Evaporation crystallization equipment also comprises the filtering unit 25 in the downstream being arranged on the first stripping unit 24.
The import that evaporation crystallization equipment also comprises the second strongly-acid cation exchanger 26, second strongly-acid cation exchanger 26 for removing the ammonium radical ion in distilled water is distilled water pot 23 with mixing and is communicated.
Preferably, the second strongly-acid cation exchanger 26 is arranged on the downstream of filtering unit 25.
In the present embodiment, filtering unit 25 comprises the activated charcoal filter utilizing activated carbon filtration impurities in water.Activated charcoal filter is pumped to purify further through the distilled water of stripping process in the first stripping unit.Due to the first stripping unit 24, by the organism of ammonia, nitrogen and some volatile, from distilled water, stripping is out, reduce the load of activated carbon filtration unit, thus extend the absorption saturated cycle of gac and the regeneration period of the second strong-acid cation crosspoint.
Second strongly-acid cation exchanger 26 comprises the regenerative wastewater outlet for exporting the regenerative wastewater produced in the second strongly-acid cation exchanger regenerative process, and regenerative wastewater outlet communicates with the magma import of vaporizer.
Evaporation crystallization equipment also comprises the second stripping unit 27, second stripping unit 27 import and communicates with the wastewater outlet of the second strongly-acid cation exchanger 26, and the outlet of the second stripping unit 27 communicates with the magma import of vaporizer 21.
In the regenerative wastewater of the second strong-acid cation ion-exchanger, ammonium is from very high containing quantum, and the second stripping unit 27 needs to use very low power consumption and medicine consumption just the ammonia in water, nitrogen can be removed.Regenerative wastewater after stripping enters into vaporizer again, so both can reduce the ammonia-nitrogen content entering vaporizer, also can reduce the ammonia nitrogen loading of distilled water stripping unit, thus improves distilled water product water water quality.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (21)
1. a treatment system for reverse osmosis dope, is characterized in that, described treatment system comprises:
Reverse osmosis treatment equipment, described reverse osmosis treatment equipment comprises pretreatment unit and is arranged on the reverse osmosis treatment device (11) in described pretreatment unit downstream;
Evaporation crystallization equipment, described evaporation crystallization equipment is connected with described reverse osmosis treatment equipment to purify at least part of waste water produced in the process of reverse osmosis dope described in described reverse osmosis treatment equipment process.
2. treatment system according to claim 1, is characterized in that, described reverse osmosis treatment device (11) comprises the dense water out for exporting reverse osmosis concentrated water, and described dense water out communicates with the import of described evaporation crystallization equipment.
3. treatment system according to claim 1, it is characterized in that, described reverse osmosis treatment equipment also comprises first strongly-acid cation exchanger (12) for removing the ammonium radical ion in the water of described reverse osmosis treatment device (11) output in the downstream being arranged on described reverse osmosis treatment device (11).
4. treatment system according to claim 3, it is characterized in that, described first strongly-acid cation exchanger (12) comprises the first strongly-acid cation exchanger regeneration waste liquid outlet for exporting the regeneration waste liquid produced in regenerative process, and described first strongly-acid cation exchanger regeneration waste liquid outlet communicates with the import of described evaporation crystallization equipment.
5. treatment system according to claim 1, is characterized in that, described pretreatment unit comprises:
Settling pond (17), described settling pond (17) is arranged on the upstream of described reverse osmosis treatment device (11); And/or,
Quartz filter (16), described quartz filter (16) is arranged on the upstream of described reverse osmosis treatment device (11); And/or,
Ion-exchange unit (15), described ion-exchange unit (15) is arranged on the upstream of described reverse osmosis treatment device (11), and described ion-exchange unit (15) is for reducing water hardness; And/or,
Ultrafiltration apparatus (14), described ultrafiltration apparatus (14) is arranged on described reverse osmosis treatment device (11) upstream; And/or,
Cartridge filter (13), described cartridge filter (13) is arranged on described reverse osmosis treatment device (11) upstream.
6. treatment system according to claim 5, it is characterized in that, described pretreatment unit comprises the described settling pond (17) set gradually to downstream from upstream, described quartz filter (16), described ion-exchange unit (15), described ultrafiltration apparatus (14), described cartridge filter (13) and described reverse osmosis treatment device (11).
7. treatment system according to claim 5, is characterized in that, described settling pond (17) comprising:
Flocculation basin (171);
Settling tank (172), described settling tank (172) is arranged on the downstream of described flocculation basin (171);
Throw out reflux, described throw out reflux is used at least part of throw out in described settling tank to be delivered to described flocculation basin (171) using as the nucleus of condensation.
8. the treatment system according to any one of claim 5 to 7, it is characterized in that, described pretreatment unit comprises described ion-exchange unit (15), and described ion-exchange unit (15) comprises Na-ion exchanger (151) and/or weakly acidic cation exchanger (152).
9. treatment system according to claim 8, it is characterized in that, described ion-exchange unit (15) comprises weakly acidic cation exchanger (152), and described ion-exchange unit (15) also comprises the degassing tower (153) in the downstream being arranged on described weakly acidic cation exchanger (152).
10. treatment system according to claim 8, is characterized in that, described ion-exchange unit (15) comprising:
Na-ion exchanger (151), described Na-ion exchanger (151) comprises the Na-ion exchanger waste liquid outlet for exporting regeneration waste liquid, and described Na-ion exchanger waste liquid outlet communicates with the import of described evaporation crystallization equipment; And/or,
Weakly acidic cation exchanger (152), described weakly acidic cation exchanger (152) comprises the weakly acidic cation exchanger waste liquid outlet for exporting regeneration waste liquid, and the import of evaporation crystallization equipment described in described weakly acidic cation exchanger waste liquid outlet communicates.
11. treatment systems according to claim 1, is characterized in that, described evaporation crystallization equipment comprises:
Vaporizer (21), described vaporizer (21) comprises the waste water inlet for introducing in described reverse osmosis treatment equipment at least part of waste water produced and the vaporizer magma outlet for exporting the magma after evaporation process;
Crystallizer (22), described crystallizer (22) comprises the import of crystallizer magma, and the import of described crystallizer magma exports with the described vaporizer magma of described vaporizer (21) and communicates;
Mixing distillation water pot (23), described mixing distillation water pot (23) passes to described vaporizer (21) and described crystallizer (22) homogeneous phase the distilled water collecting described vaporizer (21) and described crystallizer (22) institute output.
12. treatment systems according to claim 11, is characterized in that, described vaporizer comprises:
Evaporator body (211), described evaporator body (211) comprises housing and is arranged on the heat transfer tube in described housing;
Heating steam import, described heating steam import and described housing pass to the media for heat exchange introduced to described housing in steam and described heat transfer tube mutually;
Material pot, described material pot comprises material pot waste water inlet, steam and salts solution mixture intake, vapour outlet and liquid exit, described material pot waste water inlet forms the described waste water inlet of described vaporizer, described steam and salts solution mixture intake communicate with the outlet of described heat transfer tube, described vapour outlet communicates with described heating steam import, and described liquid exit communicates with the import of described heat transfer tube;
Heating unit, described heating unit is delivered to the steam of described heating steam import by the vapour outlet of described material pot for heating;
Evaporator room water outlet, described evaporator room water outlet and described housing pass to mutually export enter described housing by described heating steam import with the heat exchange of described heat transfer tube medium after distilled water, described evaporator room water outlet distills water pot (23) pass to the delivery of steam after by described heat exchange mutually to described mixing distilling water pot (23) with described mixing.
13. treatment systems according to claim 12, it is characterized in that, described vaporizer (21) also comprises mist eliminator (213), the import of described mist eliminator (213) is connected with the described vapour outlet of described material pot, the pneumatic outlet of described mist eliminator (213) is for exporting the steam after demist, and the pneumatic outlet of described mist eliminator (213) communicates with the described heating steam import of described vaporizer.
14. treatment systems according to claim 13, it is characterized in that, described heating unit comprises compressor (214), the import of described compressor (214) communicates with the pneumatic outlet of described mist eliminator (213), and the outlet of described compressor (214) communicates with described heating steam import.
15. treatment systems according to claim 11, is characterized in that, described crystallizer (22) comprising:
Crystallizer body (221), described crystallizer body (221) comprises the import of crystallizer body magma, the outlet of crystallizer body magma and crystallizer vapour outlet;
Pump circulation interchanger (222), described pump circulation interchanger comprises magma pipeline, and described magma pipeline is serially connected with between described crystallizer body magma import and described crystallizer body magma export;
Recycle pump, described recycle pump is serially connected with between described crystallizer body magma import and described crystallizer body magma export;
Condenser (223), described condenser (223) comprises condenser vapor import and leaving condenser water mouth, and described leaving condenser water mouth distills water pot (23) communicate with described mixing.
16. treatment systems according to claim 11, is characterized in that, described crystallizer (22) also comprises:
Crystallizer magma exports, and described crystallizer magma outlet is for exporting the concentrated magma after crystallization treatment;
Centrifuge (224), described centrifuge (224) comprises concentrated magma import and centrifuge filtrate outlet, described concentrated magma import exports with crystallizer magma and communicates, and described centrifuge filtrate outlet and the described crystallizer magma import of described crystallizer (22) pass to mutually and the filtrate that described centrifuge (224) produces be back to described crystallizer with crystallization treatment again.
17. treatment systems according to claim 11, it is characterized in that, described evaporation crystallization equipment also comprises the first stripping unit (24), and the import of described first stripping unit (24) is distilled water pot (23) communicate with described mixing.
18. treatment systems according to claim 17, is characterized in that, described evaporation crystallization equipment also comprises the activated charcoal filter (25) in the downstream being arranged on described first stripping unit (24).
19. treatment systems according to claim 11, it is characterized in that, described evaporation crystallization equipment also comprise for remove ammonium radical ion in distilled water except ammonia unit (26), the described import except ammonia unit (26) is distilled water pot (23) communicate with described mixing.
20. treatment systems according to claim 19, it is characterized in that, the described ammonia unit that removes comprises the second strongly-acid cation exchanger, described second strongly-acid cation exchanger comprises the regenerative wastewater outlet for exporting the regenerative wastewater produced in the second strongly-acid cation exchanger regenerative process, and described regenerative wastewater outlet communicates with the import of described vaporizer magma.
21. treatment systems according to claim 20, it is characterized in that, described evaporation crystallization equipment also comprises the second stripping unit (27), described second stripping unit (27) import communicates with the described wastewater outlet of described second strongly-acid cation exchanger (26), and the described outlet of the second stripping unit (27) communicates with the vaporizer magma import of described vaporizer (21).
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| CN201520533370.1U CN204824503U (en) | 2015-07-21 | 2015-07-21 | Processing system of reverse osmosis dope |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105000741A (en) * | 2015-07-21 | 2015-10-28 | 神华集团有限责任公司 | Treatment system of reverse osmosis concentrated liquid |
| CN105948351A (en) * | 2016-05-16 | 2016-09-21 | 神华集团有限责任公司 | Water treatment system and method |
| CN106744286A (en) * | 2016-12-31 | 2017-05-31 | 天津君歌分子蒸馏设备有限公司 | A kind of body crawl air bag |
| CN107585910A (en) * | 2017-09-28 | 2018-01-16 | 中国神华能源股份有限公司 | Wastewater treatment equipment |
| CN109205717A (en) * | 2018-10-29 | 2019-01-15 | 国家能源投资集团有限责任公司 | A kind of non-crystal seed method evaporation process method and processing system of waste water |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105000741A (en) * | 2015-07-21 | 2015-10-28 | 神华集团有限责任公司 | Treatment system of reverse osmosis concentrated liquid |
| CN105000741B (en) * | 2015-07-21 | 2017-12-19 | 神华集团有限责任公司 | The processing system of counter-infiltration dope |
| CN105948351A (en) * | 2016-05-16 | 2016-09-21 | 神华集团有限责任公司 | Water treatment system and method |
| CN106744286A (en) * | 2016-12-31 | 2017-05-31 | 天津君歌分子蒸馏设备有限公司 | A kind of body crawl air bag |
| CN107585910A (en) * | 2017-09-28 | 2018-01-16 | 中国神华能源股份有限公司 | Wastewater treatment equipment |
| CN109205717A (en) * | 2018-10-29 | 2019-01-15 | 国家能源投资集团有限责任公司 | A kind of non-crystal seed method evaporation process method and processing system of waste water |
| CN109205717B (en) * | 2018-10-29 | 2022-10-04 | 国家能源投资集团有限责任公司 | Amorphous seed method evaporation treatment method and treatment system for wastewater |
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