CN205061777U - Stainless steel pickling waste water treatment and resource recovery integrated equipment - Google Patents
Stainless steel pickling waste water treatment and resource recovery integrated equipment Download PDFInfo
- Publication number
- CN205061777U CN205061777U CN201520781168.0U CN201520781168U CN205061777U CN 205061777 U CN205061777 U CN 205061777U CN 201520781168 U CN201520781168 U CN 201520781168U CN 205061777 U CN205061777 U CN 205061777U
- Authority
- CN
- China
- Prior art keywords
- outlet
- concentrated
- groove
- film
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The utility model provides an integrated equipment of stainless steel pickling waste water treatment and resource recovery, includes: preliminary treatment section, membrane processing section, divide the matter crystallized region, its characterized in that store equalizing basin in, and oxidation reaction groove, flocculation and precipitation groove, filter, ultrafiltration device, reverse osmosis unit, concentrated membrane system, evaporative concentration branch matter crystal system be in charge of from beginning to end and interconnect, each charge device sets up respectively on the processing section of place, forms the acid waste water processing apparatus that forms a complete set. The utility model has the advantages that adopt chemical reaction sediment, membrane separation concentration to and evaporation branch matter crystallization process treatment process, can handle the various acid waste waters sour, that inorganic salts are given first place to that contain, realize the waste water recycling, but stainless steel pickling waste waters zero release utilization is realized to salt products such as recovering sulfuric sodium (and sodium chloride), sodium nitrate, sodium fluoride after the crystallization. While the system mud output greatly reduced has alleviateed the burden that mud was dealt with.
Description
Technical field
The utility model relates to the Treatment and recovery recovery apparatus set of a kind of acid waste water treatment facility, particularly a kind of stainless steel acid cleaning waste water.
Background technology
Stainless steel is widely used because of its excellent erosion resistance and good outward appearance.In process of production, the courses of processing such as inevitably annealed, normalizing, quenching, welding, surface can produce the oxide skin of black to stainless steel often.Oxide skin not only affects stainless visual appearance, also can have a negative impact to the following process of product, therefore the surface treatment method such as pickling, polishing must be adopted before following process to be removed.
Stainless steel surface can produce iron scale, its main component is FeO, Fe
2o
3, NiO2, Cr
2o
3, Fe
3o
4, FeOCr
2o
3, NiFe
2o
3, FeOCr
2o
3fe
2o
3deng dense form oxide compound.The basic strong adhesion of these oxide compounds, at employing ball blast, in the treatment process of the combination procesies such as high temperature alkaline etching, fused salt electrolysis, nitration mixture pickling, multistage rinsing, inevitably discharge the multiply pickling-rinsing waste water such as neutral salt waste water, acid-bearing wastewater, fluorine-containing nitration mixture waste water.
In acid-washing stainless steel process, be first generally the iron scale with sulfuric acid pre-pickling removing surface, then carry out pickling with 90-160g/L nitric acid and 50-60g/L hydrofluoric acid nitration mixture.The nitric acid with strong oxidizing property by metal and metal oxide, can generate Cr
3+, Fe
3+and Ni
2+ion, these metal ions (especially Cr
3+and Fe
3+) and hydrofluoric acid form stable mixture.In multistage rinse cycle, above-mentioned acid solution and metal ion enter into rinse water, form pickling waste waters.
Stainless steel waste water is mostly divided into two classes by domestic and international stainless steel enterprises: containing Cr
6+neutral salt waste water and nitration mixture waste water.The former incites somebody to action wherein most Cr through chemical reduction
6+convert Cr to
3+after, then add alkali (normally sodium hydroxide), generate chromium hydroxide precipitation, waste water enters nitration mixture wastewater equalization pond again, adds alkali (normally lime) and carries out neutralization reaction, make Cr in waste water
3+water-fast precipitation of hydroxide material is generated with the iron in waste water, nickel.This method is simple to operate, is conventional process method for waste water.
By neutralization precipitation, sludge condensation and dehydration, final to mud cake russet.This method process stainless steel acid cleaning waste water, although carried out neutralization, reduction, precipitation process to waste water, in the day-to-day operation at each enterprise wastewater station, for guaranteeing standard water discharge, milk of lime is usually excessive to be added, and causes mud cake amount greatly to increase thus.And containing objectionable impuritiess such as a large amount of nickel, fluorine in these mud, there is very large harm, must safe disposal.And current to environmental requirement increasingly stringent of society, sludge treatment expense is more and more expensive.
Moreover, due to the appearance that new pollutant emission requires, new requirement has been had to the total nitrogen in discharge water, the waste water of qualified discharge is originally only got final product through neutralization precipitation, because contain the nitrate radical of very high density in waste water, can not qualified discharge, denitrogenation processing must be carried out to the nitrogen contained in waste water.
At present, conventional denitrification treatment process is biochemical process, utilizes the denitrification of denitrifying bacteria, the nitric nitrogen contained is changed into nitrogen discharge from water in waste water.This process must be carried out under the prerequisite of carbon source abundance, and in pickling waste waters, usually lack organism carbon source, the carbon source as microorganism denitrification process such as a large amount of methyl alcohol, glucose additionally must be added in biochemical treatment process, simultaneously, because the nitrogen in nitrate radical is removed, the pH of water progressively raises, and for maintaining the pH environment that microorganism growth needs, must add acid and neutralizing.Therefore, biochemical process denitrification operation expense is usually up to 10-20 yuan/ton of waste water.
Summary of the invention
The purpose of this utility model is the defect for existing in prior art, provides the complexes that a kind of Treatment and recovery of stainless steel acid cleaning waste water reclaims.The utility model adopts and is precipitated as pre-treatment based on chemical neutralization, the wastewater treatment of salt and resource utilization recovery system are reclaimed in film process recycle-water, sub-prime crystallization, is reclaimed as resource the salt contained in waste water, and recycle-water reuse production.
The utility model, for stainless steel acid cleaning waste water, adopts three segment process process, realizes wastewater zero discharge, and salt resource utilization reclaims.The treatment stage that the utility model comprising three segment process: first paragraph pretreatment process, is mainly chemical reaction, neutralization precipitation and filtration; Second segment film treatment process, mainly adopts membrane separation technique, is removed by the salt in waste water, reclaims fresh water reuse, and the dense water that membranous system produces is enriched the salt of high density, can does further process in back segment operation; 3rd section of sub-prime Crystallization Procedure, main employing low-temperature evaporation condensing crystal, salt bearing liquid wastes is concentrated further, and by salt (as Sodium Fluoride, sodium sulfate etc.) wherein according to its solubleness difference at a certain temperature, make the crystallization respectively of various salt, adopt freezing and crystallizing technology again, reduce the temperature of concentrated solution, make the SODIUMNITRATE in concentrated solution reduce because solubility with temperature reduces and produce crystallization.
Pretreatment section comprises: storage equalizing tank, in and oxidizing reaction groove, flocculation reaction groove, settling bath, strainer, intermediate pool, sludge dewatering unit, equalizing tank lift pump, gas blower, sodium hydroxide throwing device, polymeric flocculant throwing device, polymerize aluminum chloride throwing device.
Film processing section comprises: self-cleaning filter, ultra-filtration equipment, ultra-filtration water groove, cartridge filter, reverse osmosis unit, reverse osmosis concentrated tank, film softening installation, concentrated film inlet flume, concentrated film device, reuse tank, ultrafiltration intake pump, feed water by reverse osmosis pump, reverse osmosis high-pressure pump, film softens feeding pump, concentrated film feeding pump, concentrated film high-pressure pump, ultra-filtration equipment scavenging pump, air compressor machine, chemically-cleaning device, clorox throwing device, tenderizer throwing device, scale inhibitor feeding device, citric acid throwing device.
Sub-prime crystallized region comprises: concentrated solution storage tank, interchanger, evaporation concentrator, concentrated solution are except fluorine groove, evaporative crystallizer, freezing and crystallizing device, magma subsider, separating centrifuge, centrifuge mother liquor groove, crystal storage tank, evaporation concentration feeding pump, evaporation concentration recycle pump, evaporative crystallization feeding pump, freezing and crystallizing feeding pump, crystalline mother solution efflux pump, separating centrifuge feeding pump, centrifuge mother liquor pump.
It is characterized in that: in pretreatment section, stainless steel acid cleaning waste water is stored in storage equalizing tank, storage equalizing tank water outlet by pipeline and equalizing tank lift pump with in and the water-in of oxidizing reaction groove be connected, store regulating tank and be provided with gas blower, oxygenation in pond.In and oxidizing reaction groove be provided with oxygenate apparatus and sodium hydroxide throwing device, add sodium hydroxide and neutralize.In be connected with flocculation reaction groove by pipeline with oxidation trough water outlet, flocculation reaction groove is provided with polymeric flocculant throwing device.Flocculation reaction groove water outlet is connected with settling bath water-in by pipeline.Settling bath water outlet is connected by pipe-and-filter water-in, and strainer is provided with polymerize aluminum chloride throwing device, carries out coagulation and filtration.Strainer water outlet is connected with intermediate pool water-in by pipeline, and intermediate pool water outlet is connected to film processing section by pipeline.The mud mouth of settling bath is connected with sludge dewatering unit with pump by pipeline.
At film processing section, the intermediate pool water outlet of pretreatment section is connected with self-cleaning filter water-in with ultrafiltration intake pump by pipeline, is provided with clorox throwing device before self-cleaning filter water-in, for adding clorox sterilant.The water outlet of self-cleaning filter is connected with the water-in of ultra-filtration equipment by pipeline.Ultra-filtration equipment water outlet is connected by the water-in of pipeline with ultra-filtration water groove.The outlet of chemically-cleaning device is cleaned interface by pipeline with the medicament of ultra-filtration equipment and is connected, and the washing outlet of ultra-filtration equipment is connected by pipeline with the import of chemically-cleaning device.The inlet mouth of ultra-filtration equipment is connected with air compressor machine by pipeline.The water outlet that ultrafiltration goes out groove is connected with the water-in of cartridge filter with feed water by reverse osmosis pump by pipeline, another water outlet is connected with the Butterworth Hatch of ultra-filtration equipment with ultra-filtration equipment scavenging pump by pipeline, and its pipeline is provided with clorox throwing device and citric acid throwing device.The water outlet of cartridge filter is connected with the water-in of reverse osmosis unit with reverse osmosis high-pressure pump by pipeline, and reverse osmosis unit front end is provided with scale inhibitor feeding device.The clean water outlet of reverse osmosis unit is connected by the water-in of pipeline with reuse tank, and dense water out is connected by the water-in of pipeline with reverse osmosis concentrated tank, and the cleaning of reverse osmosis unit is imported and exported and is connected with the export and import of chemically-cleaning device respectively by pipeline.Reverse osmosis concentrated tank import is provided with tenderizer throwing device, the water outlet of reverse osmosis concentrated tank softens feeding pump by pipeline and film and is connected with the water-in of film softening installation, the water outlet of film softening installation is connected by the water-in of pipeline with concentrated film inlet flume, the water outlet of concentrated film inlet flume is connected with cartridge filter with concentrated film feeding pump by pipeline, and cartridge filter water outlet is connected with the water-in of concentrated film device with concentrated film high-pressure pump by pipeline.The clean water outlet of concentrated film device is connected with reuse tank by pipeline, the dope outlet of concentrated film device is connected to the water-in of the concentrated solution storage tank of hypomere operation by pipeline, the cleaning inlet and outlet connectors of concentrated film device connects the export and import of chemically-cleaning device respectively by pipeline.
At sub-prime crystallized region, the dope outlet of the concentrated film device of film processing section is connected by the import of pipeline with concentrated solution storage tank, the outlet of concentrated solution storage tank is connected with the cold side import of interchanger with evaporation concentration feeding pump by pipeline, the cold side outlet port of interchanger is connected with another vapor heat exchanger, the medium side outlet of vapor heat exchanger is connected with the import of evaporation concentrator by pipeline, dense water after membrane concentration first carries out preheating before entering evaporation concentrator, the secondary steam that the thermal source of preheating first adopts sub-prime crystallized region to discharge, make full use of waste heat, insufficient section adopts raw steam heating again.The concentrated solution outlet of evaporation concentrator is connected with the import of concentrated solution except fluorine groove with evaporation concentration recycle pump by pipeline, and evaporation concentration circulation pump outlet takes back the import of evaporation concentrator by an other pipeline, refluxes.The xln outlet of evaporation concentrator is connected by the import of pipeline with the magma subsider of this operation, the outlet of this magma subsider is connected with separating centrifuge import with the separating centrifuge feeding pump of this operation by pipeline, the Sodium Fluoride crystal that separating centrifuge is separated falls into crystal (Sodium Fluoride) storage tank, the mother liquor separated receives centrifuge mother liquor groove by pipeline, then takes back concentrated solution storage tank by pipeline and centrifuge mother liquor pump.Evaporation concentrator rear end is provided with except fluorine groove, removes for the fluorine that will remain in concentrated solution, to ensure the purity of SODIUMNITRATE, sodium sulfate product.The outlet that concentrated solution removes fluorine groove is connected with the import of evaporative crystallizer with evaporative crystallization feeding pump by pipeline.Concentrated solution removes fluorine groove and is provided with lime throwing device, and the sediment outlet that concentrated solution removes fluorine groove enters sludge dewatering unit by pipeline.The outlet of evaporative crystallizer is connected with the import of freezing and crystallizing feeding pump with freezing and crystallizing device by pipeline, the xln outlet of evaporative crystallizer is connected by the import of pipeline with the magma subsider of this operation, the outlet of this magma subsider is connected with separating centrifuge import with the separating centrifuge feeding pump of this operation by pipeline, sodium sulfate (or sodium-chlor) crystal that separating centrifuge is separated falls into crystal (sodium sulfate or sodium-chlor) storage tank, the mother liquor separated receives centrifuge mother liquor groove by pipeline, concentrated solution is taken back except fluorine groove again by pipeline and centrifuge mother liquor pump.The outlet of freezing and crystallizing device takes back the storage equalizing tank of pretreatment section by pipeline and crystalline mother solution efflux pump, the outlet of crystalline mother solution efflux pump is provided with pipeline in addition, is arranged outward by the crystalline mother solution of remnants.The xln outlet of freezing and crystallizing device is connected by the import of pipeline with the magma subsider of this operation, the outlet of this magma subsider is connected with separating centrifuge import with the separating centrifuge feeding pump of this operation by pipeline, the SODIUMNITRATE crystal that separating centrifuge is separated falls into crystal (SODIUMNITRATE) storage tank, the mother liquor separated receives centrifuge mother liquor groove by pipeline, then takes back the import of freezing and crystallizing device by pipeline and centrifuge mother liquor pump.The cooling water intakeoutfall of freezing and crystallizing device connects the import and export of recirculated cooling water respectively by pipeline.
Aeration tube is provided with in described storage equalizing tank, form aerating apparatus with gas blower, the ferrous salt contained can be oxidized to ferric iron in waste water, then removed by adding sodium hydroxide production ferric hydroxide precipitate, meanwhile, other contained in waste water metal ion is also together removed.Strainer is sand filtration, multi-medium filtering or fiber filter device.
Described concentrated film device is high pressure reverse osmosis rolled film or high pressure reverse osmosis disc type film or tympanum or forward osmosis membrane, and the content according to divalence in waste water and above ion arranges or do not establish Weak-acid cation switch before reverse osmosis unit.
Described evaporation concentrator is mechanically compress vaporizer (MVR) or multiple-effect evaporator, and evaporative crystallizer is mechanical compression evaporation crystallizer or Multi-effect evaporation crystallizer.
The described concentrated film device working temperature be provided with for improving membranous system improves the waste-heat recovery device of membrane flux, and the thermal source that preheating enters the dense water of evaporation concentrator is the secondary steam that sub-prime crystallized region is discharged.
Described film softening installation, can replace to precipitation+ultrafiltration.
The medicament added with oxidizing reaction groove in described pretreatment section, can be sodium hydroxide, also can be sodium hydroxide+calcium chloride (or lime), when adding sodium hydroxide, the product of final recovery has Sodium Fluoride, and adding sodium hydroxide+calcium chloride (or lime) is that the finished product do not have Sodium Fluoride, and after filtration, set up medicament softening installation before film processing section, remove the calcium ion in water.
The chromate waste water discharged in production, neutral salt waste water, (add S-WAT or Sulfothiorine redox, hydro-oxidation sodium neutralization precipitation) after pre-treatment and can be mixed into above-mentioned Waste Water Treatment and process together.
The utility model has the advantages that and adopt chemical reaction precipitation, membrane separation concentration, and evaporation sub-prime crystallization process treatment process, can process various is main acid waste water containing acid, inorganic salt, realize waste water recycling, salt is the product such as recyclable sodium sulfate (and sodium-chlor), SODIUMNITRATE, Sodium Fluoride after crystallization, realizes stainless steel acid cleaning waste water zero release recycling.Simultaneity factor sludge yield reduces greatly, alleviates the burden of sludge disposal.
Accompanying drawing explanation
Fig. 1 structural representation of the present invention.
In figure: pretreatment section: in 101 storage equalizing tanks, 102 and oxidizing reaction groove, 103 flocculation reaction grooves, heavy 104 shallow lake grooves, 105 strainers, 106 intermediate pool, 107 sludge dewatering units, 108 equalizing tank lift pumps, 109 gas blowers, 110 sodium hydroxide throwing devices, 111 polymeric flocculant throwing devices, 112 polymerize aluminum chloride throwing devices;
Film processing section: 201 self-cleaning filters, 202 ultra-filtration equipment, 203 ultra-filtration water grooves, 204 cartridge filters, 205 reverse osmosis units, 206 reverse osmosis concentrated tanks, 207 film softening installations, 208 concentrated film inlet flumes, 209 concentrated film devices, 210 reuse tanks, 211 ultrafiltration intake pumps, 212 feed water by reverse osmosis pumps, 213 reverse osmosis high-pressure pumps, 214 films soften feeding pump, 215 concentrated film feeding pumps, 216 concentrated film high-pressure pump, 217 ultra-filtration equipment scavenging pumps, 219 air compressor machines, 220 chemically-cleaning devices, 221 clorox throwing devices, 222 tenderizer throwing devices, 223 scale inhibitor feeding devices, 224 citric acid throwing devices,
Sub-prime crystallized region: 301 concentrated solution storage tanks, 302 interchanger, 303 evaporation concentrators, 304 concentrated solutions are except fluorine groove, 305 evaporative crystallizers, 306 freezing and crystallizing devices, 307 magma subsiders, 308 separating centrifuges, 309 centrifuge mother liquor grooves, 310 crystal storage tanks, 311 evaporation concentration feeding pumps, 312 evaporation concentration recycle pumps, 313 evaporative crystallization feeding pumps, 314 freezing and crystallizing feeding pumps, 315 crystalline mother solution efflux pumps, 316 separating centrifuge feeding pumps, 317 centrifuge mother liquor pumps, 319 lime throwing devices.
Embodiment
Embodiment of the present utility model is further illustrated below in conjunction with accompanying drawing.
Embodiment one:
See Fig. 1, the present embodiment is made up of pretreatment section, film processing section, sub-prime crystallized region.
Pretreatment section comprises: storage equalizing tank 101, in and oxidizing reaction groove 102, flocculation reaction groove 103, settling bath 104, strainer 105, intermediate pool 106, sludge dewatering unit 107, equalizing tank lift pump 108, gas blower 109, sodium hydroxide throwing device 110, polymeric flocculant throwing device 111, polymerize aluminum chloride throwing device 112.
Film processing section comprises: self-cleaning filter 201, ultra-filtration equipment 202, ultra-filtration water groove 203, cartridge filter 204, reverse osmosis unit 205, reverse osmosis concentrated tank 206, film softening installation 207, concentrated film inlet flume 208, concentrated film device 209, reuse tank 210, ultrafiltration intake pump 211, feed water by reverse osmosis pump 212, reverse osmosis high-pressure pump 213, film softens feeding pump 214, concentrated film feeding pump 215, concentrated film high-pressure pump 216, ultra-filtration equipment scavenging pump 217, air compressor machine 219, chemically-cleaning device 220, clorox throwing device 221, tenderizer throwing device 222, scale inhibitor feeding device 223, citric acid throwing device 224.
Sub-prime crystallized region comprises: concentrated solution storage tank 301, interchanger 302, evaporation concentrator 303, concentrated solution is except fluorine groove 304, evaporative crystallizer 305, freezing and crystallizing device 306, magma subsider 307, separating centrifuge 308, centrifuge mother liquor groove 309, crystal storage tank 310, evaporation concentration feeding pump 311, evaporation concentration recycle pump 312, evaporative crystallization feeding pump 313, freezing and crystallizing feeding pump 314, crystalline mother solution efflux pump 315, separating centrifuge feeding pump 316, centrifuge mother liquor pump 317, lime throwing device 319.
In pretreatment section, stainless steel acid cleaning waste water is stored in storage equalizing tank 101 and carries out water quality and quantity adjustment, storage equalizing tank water outlet by pipeline and equalizing tank lift pump 108 with in be connected with the water-in of oxidizing reaction groove 102, storage regulating tank 101 is provided with gas blower, aeration tube is provided with in storage equalizing tank 101, form aerating apparatus to oxygenation in pond with gas blower, make the ferrous ions contained in waste water become iron ion; In and oxidizing reaction groove 102 be provided with oxygenate apparatus and sodium hydroxide throwing device 110, add sodium hydroxide and neutralize, ferrous oxidation that simultaneously further will be residual under the oxygenizement of oxygen, produces the precipitated metals such as ironic hydroxide; In and oxidation trough 102 water outlet be connected to flocculation reaction groove 103 by pipeline, flocculation reaction groove 103 is provided with polymeric flocculant throwing device 111, adds polymeric flocculant, makes the precipitated metal things such as the ironic hydroxide in water be condensed into big flocculating body so that subsequent sedimentation; Flocculation reaction groove 103 water outlet is connected with settling bath 104 by pipeline; The sedimentation in settling bath of the metal flcos such as ironic hydroxide, supernatant liquor enters strainer 105 by settling bath 104 water outlet, and strainer 105 is quartz sand filtration equipment.Strainer 105 is provided with polymerize aluminum chloride throwing device 112, carries out coagulation and filtration; Strainer 105 water outlet enters intermediate pool 106 by pipeline, and intermediate pool 106 water outlet is connected to film processing section by pipeline.The mud mouth that throw out in settling bath 104 passes through is evacuated to sludge treating block 107 through pump and processes.
At film processing section, by pipeline and ultrafiltration intake pump 211, intermediate pool 106 water outlet of pretreatment section being connected to self-cleaning filter 201, before self-cleaning filter 201, being provided with clorox throwing device 221, for adding clorox sterilant; The water outlet of self-cleaning filter 201 is connected to the water-in of ultra-filtration equipment 202 by pipeline, waste water is after Ultra filtration membrane, and the suspended substance in waste water etc. are removed, and water outlet is connected to ultra-filtration water groove 203 by pipeline; Ultra-filtration equipment 202 is provided with chemically-cleaning device 220, when film contaminated serious time, for cleaning ultra-filtration membrane, to be back to chemically-cleaning device 220 reusable for cleaning liquid, and the scavenging solution of inefficacy is arranged outward; The inlet mouth of ultra-filtration equipment 202 is connected with air compressor machine 219 by pipeline, can carry out air purge to ultra-filtration equipment; A water outlet of ultra-filtration water groove 203 is connected with the water-in of feed water by reverse osmosis pump 212 with cartridge filter 204 by pipeline, another water outlet is connected with the Butterworth Hatch of ultra-filtration equipment scavenging pump 217 with ultra-filtration equipment 202 by pipeline, its pipeline is provided with clorox throwing device 221 and citric acid throwing device 224, can carry out daily cleaning to ultra-filtration membrane; The outlet of cartridge filter 204 is connected with the water-in of reverse osmosis high-pressure pump 213 with reverse osmosis unit 205 by pipeline, water is after reverse osmosis membrane separation, salt in waste water can be concentrated in dense water, reverse osmosis unit is provided with scale inhibitor feeding device 223, can add Scale inhibitors and slow down film fouling; Reverse osmosis produced water is de-mineralized water, is connected to reuse tank 210 by the clean water outlet of reverse osmosis unit 205 by pipeline, and dense water is then connected to reverse osmosis concentrated tank 206 by pipeline; The cleaning of reverse osmosis unit 205 is imported and exported and is connected with the export and import of chemically-cleaning device 220 respectively by pipeline, after reverse osmosis membrane is contaminated, can carry out matting.Reverse osmosis concentrated tank 206 is provided with tenderizer throwing device 222, can add softening medicament, and the calcium magnesium plasma in dense water is formed throw out; The water outlet of reverse osmosis concentrated tank 206 is softened feeding pump 214 by pipeline and film and is entered film softening installation 207, in film softening installation, and the separated removals of throw out such as calcium magnesium.The water outlet of film softening installation 207 enters concentrated film inlet flume 208 by pipeline, the water outlet of concentrated film inlet flume 208 is connected with cartridge filter 204 with concentrated film feeding pump 215 by pipeline, cartridge filter 204 water outlet is connected with the water-in of concentrated film high-pressure pump 216 with concentrated film device 209 by pipeline, concentrated film device 209 is high pressure reverse osmosis rolled film, in concentrated film device, by membrane sepn, the salinity in dense water concentrates further; The fresh water that concentrated film device 209 produces enters reuse tank 210 by the clean water outlet concentrating film device by pipeline, the dope that concentrated film device 209 produces is connected to the concentrated solution storage tank 301 of hypomere operation by pipeline, the cleaning of concentrated film device 209 is provided with chemically-cleaning device 220, can carry out matting after film is contaminated.
At sub-prime crystallized region, the concentrated solution of the concentrated film device 209 of film processing section enters concentrated solution storage tank 301 by pipeline and stores, the water outlet of concentrated solution storage tank 301 enters the cold side of interchanger 302 by pipeline and evaporation concentration feeding pump 311, the secondary steam produced with this section carries out heat exchange, make concentrated solution preheating, enter another vapor heat exchanger 302 again, steam-out (SO) is utilized to carry out supplementary heating, concentrated solution after heating exports out from the medium side of vapor heat exchanger 302, evaporation concentrator 303 is entered by pipeline, carry out low-temperature evaporation under vacuo to concentrate, evaporation concentrator 303 is mechanically compress vaporizer (MVR).Simultaneously, the Sodium Fluoride contained in concentrated solution forms crystal, the concentrated solution of evaporation concentrator 303 enters concentrated solution except fluorine groove 304 by pipeline and evaporation concentration recycle pump 312, lime throwing device 319 should be provided with except fluorine groove 304, can feeding lime, make fluorion residual in concentrated solution produce the precipitated removal of Calcium Fluoride (Fluorspan), the sediment that concentrated solution removes fluorine groove 304 enters sludge dewatering unit 107 by pipeline; The concentrated solution that evaporation concentrator 303 produces is taken back the import of evaporation concentrator 303 by the outlet of evaporation concentration recycle pump 312 by an other pipeline, reflux; The crystal slurries that evaporation concentrator 303 produces enter the magma subsider 307 of this operation by pipeline, in magma subsider, crystal settles down, the crystal that this magma subsider 307 settles down enters separating centrifuge 308 by pipeline with the separating centrifuge feeding pump 316 of this operation and is separated, the Sodium Fluoride crystal that separating centrifuge 308 is separated falls into crystal (Sodium Fluoride) storage tank 310, the mother liquor separated receives centrifuge mother liquor groove 309 by pipeline, then takes back concentrated solution storage tank 301 by pipeline and centrifuge mother liquor pump 317.The concentrated solution that concentrated solution removes fluorine groove 304 enters evaporative crystallizer 305 by pipeline and evaporative crystallization feeding pump 313, and evaporative crystallizer is mechanical compression evaporation crystallizer.Further evaporative crystallization, produces sodium sulfate (or sodium-chlor) crystal under vacuo; The magma subsider 307 that the crystal slurries of evaporative crystallizer 305 enter this operation by pipeline carries out sedimentation, the crystal that this magma subsider 307 settles down enters separating centrifuge 308 by pipeline with the separating centrifuge feeding pump 316 of this operation and carries out centrifugation, sodium sulfate (or sodium-chlor) crystal separated falls into crystal (sodium sulfate or sodium-chlor) storage tank 310, the mother liquor separated receives centrifuge mother liquor groove 309 by pipeline, then takes back concentrated solution except fluorine groove 304 by pipeline and centrifuge mother liquor pump 317.Evaporative crystallizer 305 concentrated solution out enters freezing and crystallizing device 306 by pipeline and freezing and crystallizing feeding pump 314, carry out cooling and reduce temperature, make the SODIUMNITRATE crystallization contained in concentrated solution, the crystal slurries that cooling crystallizer 306 produces enter the magma subsider 307 of this operation by pipeline, sedimentation is carried out in magma groove, crystal after sedimentation enters separating centrifuge 308 by pipeline with the separating centrifuge feeding pump 316 of this operation and carries out centrifugation, the SODIUMNITRATE crystal that separating centrifuge 308 is separated falls into crystal (SODIUMNITRATE) storage tank 310, the mother liquor separated receives centrifuge mother liquor groove 309 by pipeline, the import of cooling crystallizer 306 is taken back again by pipeline and centrifuge mother liquor pump 317, the dope of the remnants of freezing and crystallizing device 306 takes back the storage equalizing tank 101 of pretreatment section by pipeline and crystalline mother solution efflux pump 315, crystalline mother solution efflux pump 315 exports and is provided with pipeline in addition, is arranged outward by the crystalline mother solution of remnants, the cooling water intakeoutfall of cooling crystallizer connects the import and export of recirculated cooling water respectively by pipeline.
In aforesaid operations process, should be noted and control following parameter:
Pretreatment section: the residence time of storage regulating tank 101 and aeration rate, in and the aeration rate of oxidizing reaction groove 110 and pH, the dosage of flocculation agent in flocculation reaction groove 103, the residence time of settling bath 104 and hydraulic surface loading, the turbidity of the filtration velocity of filtering unit 106, filtration area and water outlet.
Film processing section: the membrane flux of ultra-filtration equipment 202, the membrane flux of reverse osmosis unit 205, the membrane flux of film softening installation 207, the dosage of the softening medicament in reverse osmosis concentrated tank 206, the membrane flux of concentrated film device 209, the membrane flux of above-mentioned various film will have different values with different raw water qualities.Also will control each section of film and go out electrical conductivity of water, the SDI (index of membrane fouling) of ultra-filtration equipment 202 water outlet, the kind of various membrance chemistry cleaning agent and consumption, cleaning frequency etc. also change with the change of former water in addition.
Sub-prime crystallized region: the operation vacuum tightness of evaporation concentrator 303, evaporative crystallizer 305, temperature and pump circulation amount, the service temperature of freezing and crystallizing device 306 and pump circulation amount, the rotating speed of each separating centrifuge 308, except the Lime-Injecting amount of fluorine groove 304.
Embodiment two:
The present embodiment is identical with embodiment one, difference is strainer 105 is quartz sand filtration equipment, more medium filter or fibre turntable filter plant, concentrated film device 209 can be tympanum, high-pressure membrane or forward osmosis membrane, film softening installation 207 can be precipitation+ultrafiltration, evaporation concentrator 303 can be that multiple-effect evaporation concentrates or mechanically compress evaporation concentration, evaporative crystallizer 305 can be Multi-effect evaporation crystallizer and mechanical compression evaporation crystallizer, except the defluorinating agent of fluorine groove 304 can use calcium chloride instead.
Embodiment three:
The present embodiment is identical with embodiment one, difference is that in pre-treatment, sodium hydroxide throwing device 110 changes sodium hydroxide+calcium chloride (or lime) throwing device into, set up medicament after the intermediate pool 106 of pretreatment section and soften throwing device and reaction settling basin, cancel the crystal separation system (containing sodium fluoride magma subsider, separating centrifuge feeding pump, separating centrifuge, centrifuge mother liquor groove, crystal storage tank) of Sodium Fluoride.Weak-acid cation switch is set up before reverse osmosis unit.
Claims (9)
1. the complexes of a stainless steel acid cleaning waste water Treatment and recovery recovery, comprise: pretreatment section, film processing section, sub-prime crystallized region, pretreatment section comprises storage equalizing tank, in and oxidizing reaction groove, flocculation reaction groove, settling bath, strainer, intermediate pool, sludge dewatering unit, film processing section comprises self-cleaning filter, ultra-filtration equipment, ultra-filtration water groove, cartridge filter, reverse osmosis unit, reverse osmosis concentrated tank, film softening installation, concentrated film inlet flume, concentrated film device, reuse tank, sub-prime crystallized region comprises concentrated solution storage tank, interchanger, evaporation concentrator, concentrated solution is except fluorine groove, evaporative crystallizer, freezing and crystallizing device, magma subsider, separating centrifuge, centrifuge mother liquor groove, crystal storage tank, it is characterized in that: pretreatment section: storage equalizing tank with in be connected with oxidizing reaction groove, in be connected with flocculation reaction groove with oxidizing reaction groove, flocculation reaction groove is connected with settling bath, settling bath is connected with strainer, strainer is connected with intermediate pool, film processing section: intermediate pool is connected with self-cleaning filter, self-cleaning filter is connected with ultra-filtration equipment, ultra-filtration equipment is connected with ultra-filtration water groove, chemically-cleaning device cleans interface with the medicament of ultra-filtration equipment and is connected, the washing outlet of ultra-filtration equipment is connected through pipeline with the import of chemically-cleaning device, the inlet mouth of ultra-filtration equipment is connected with air compressor machine, a water outlet of ultra-filtration water groove is connected with cartridge filter, another water outlet is connected with the Butterworth Hatch of ultra-filtration equipment, cartridge filter is connected with reverse osmosis unit, the clean water outlet of reverse osmosis unit is connected with reuse tank, dense water out is connected with reverse osmosis concentrated tank, the cleaning of reverse osmosis unit is imported and exported and is connected with the export and import of chemically-cleaning device respectively through pipeline, the water outlet of reverse osmosis concentrated tank is connected with film softening installation, film softening installation is connected with concentrated film inlet flume, concentrated film inlet flume is connected with concentrated film device, the clean water outlet of concentrated film device is connected with reuse tank, sub-prime crystallized region: the dope outlet of concentrated film device is connected with concentrated solution storage tank, concentrated solution storage tank is connected with the medium side import of interchanger, interchanger is connected with another vapor heat exchanger, the medium side outlet of vapor heat exchanger is connected with evaporation concentrator, concentrated solution outlet and the concentrated solution of evaporation concentrator remove fluorine groove and are connected, the xln outlet of evaporation concentrator is connected with magma subsider, magma subsider is connected with separating centrifuge, the crystal outlet of separating centrifuge is connected with crystal storage tank, mother liquor pipeline after separation is connected with centrifuge mother liquor groove, centrifuge mother liquor groove is connected with concentrated solution storage tank, concentrated solution removes fluorine groove and is connected with evaporative crystallizer, the sediment outlet that concentrated solution removes fluorine groove is connected with sludge dewatering unit, evaporative crystallizer is connected with freezing and crystallizing device, the xln outlet of evaporative crystallizer is connected with magma subsider, this magma subsider is connected with separating centrifuge, the crystal outlet of separating centrifuge is connected with crystal storage tank, mother liquor pipeline after separation is connected with centrifuge mother liquor groove, centrifuge mother liquor groove and concentrated solution remove fluorine groove and are connected, the outlet of freezing and crystallizing device takes back the storage equalizing tank of pretreatment section through pipeline, the xln outlet of freezing and crystallizing device is connected with magma subsider, this magma subsider is connected with separating centrifuge, the SODIUMNITRATE crystal outlet of separating centrifuge is connected with crystal storage tank, mother liquor pipeline after separation is connected with centrifuge mother liquor groove, the outlet of centrifuge mother liquor groove is through the import of pipeline tieback freezing and crystallizing device.
2. the complexes of stainless steel acid cleaning waste water Treatment and recovery recovery according to claim 1, it is characterized in that the water outlet of described storage equalizing tank is provided with equalizing tank lift pump, aeration tube is provided with in storage equalizing tank, aerating apparatus is formed with gas blower, in and oxidizing reaction groove be provided with sodium hydroxide throwing device, flocculation reaction groove is provided with polymeric flocculant throwing device, strainer is provided with polymerize aluminum chloride throwing device, strainer is sand filtration, multi-medium filtering or fiber filter device, and the mud mouth of settling bath is connected with sludge dewatering unit.
3. the complexes of stainless steel acid cleaning waste water Treatment and recovery recovery according to claim 1, it is characterized in that described self-cleaning filter water-in is provided with ultrafiltration intake pump, reverse osmosis unit front end is provided with feed water by reverse osmosis pump, scale inhibitor feeding device and reverse osmosis high-pressure pump, film softening installation front end is provided with film and softens feeding pump, and concentrated film device front end is provided with ultra-filtration equipment scavenging pump before being provided with the Butterworth Hatch of concentrated film feeding pump, concentrated film high-pressure pump, ultra-filtration equipment.
4. the complexes of stainless steel acid cleaning waste water Treatment and recovery recovery according to claim 1, be provided with clorox throwing device, citric acid throwing device before it is characterized in that the Butterworth Hatch of described ultra-filtration equipment, the water-in of reverse osmosis concentrated tank is provided with tenderizer throwing device.
5. the complexes of stainless steel acid cleaning waste water Treatment and recovery recovery according to claim 1, it is characterized in that described concentrated film device is high pressure reverse osmosis rolled film or high pressure reverse osmosis disc type film or tympanum or forward osmosis membrane, arrange before reverse osmosis unit or do not establish Weak-acid cation switch.
6. the complexes of stainless steel acid cleaning waste water Treatment and recovery recovery according to claim 1, it is characterized in that the water outlet of described concentrated solution storage tank is provided with evaporation concentration feeding pump, the concentrated solution outlet of evaporation concentrator is provided with evaporation concentration recycle pump, the outlet that concentrated solution removes fluorine groove is provided with evaporation concentration recycle pump, the outlet of evaporative crystallizer is provided with evaporative crystallization feeding pump, the outlet of evaporative crystallizer is provided with freezing and crystallizing feeding pump, the outlet of freezing and crystallizing device is provided with crystalline mother solution efflux pump, the import of three separating centrifuges of sub-prime crystallized region is equipped with separating centrifuge feeding pump, the outlet of three centrifuge mother liquor grooves is equipped with centrifuge mother liquor pump.
7. the complexes of stainless steel acid cleaning waste water Treatment and recovery recovery according to claim 1, is characterized in that described concentrated solution removes fluorine groove and is provided with lime throwing device.
8. the complexes of stainless steel acid cleaning waste water Treatment and recovery recovery according to claim 1, it is characterized in that described evaporation concentrator is mechanically compress vaporizer (MVR) or multiple-effect evaporator, evaporative crystallizer is mechanical compression evaporation crystallizer or Multi-effect evaporation crystallizer, and the cooling water intakeoutfall of freezing and crystallizing device connects the import and export of recirculated cooling water respectively by pipeline.
9. the complexes of stainless steel acid cleaning waste water Treatment and recovery recovery according to claim 1, is characterized in that described concentrated film device is provided with waste-heat recovery device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520781168.0U CN205061777U (en) | 2015-10-10 | 2015-10-10 | Stainless steel pickling waste water treatment and resource recovery integrated equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520781168.0U CN205061777U (en) | 2015-10-10 | 2015-10-10 | Stainless steel pickling waste water treatment and resource recovery integrated equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205061777U true CN205061777U (en) | 2016-03-02 |
Family
ID=55388358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520781168.0U Active CN205061777U (en) | 2015-10-10 | 2015-10-10 | Stainless steel pickling waste water treatment and resource recovery integrated equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205061777U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105621744A (en) * | 2016-03-07 | 2016-06-01 | 山东国信环境系统股份有限公司 | Copper ore acid wastewater treatment and recovery device and method |
| CN106380043A (en) * | 2016-11-11 | 2017-02-08 | 北京科泰兴达高新技术有限公司 | Membrane process sewage deep treatment reuse system |
| CN106565045A (en) * | 2015-10-10 | 2017-04-19 | 麦王环境技术股份有限公司 | Complete equipment for stainless steel pickling wastewater treatment and resource recycling and treatment process |
| CN111153541A (en) * | 2019-12-25 | 2020-05-15 | 常熟市异型钢管有限公司 | Recycling method of titanium alloy pipe pickling waste liquid |
-
2015
- 2015-10-10 CN CN201520781168.0U patent/CN205061777U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106565045A (en) * | 2015-10-10 | 2017-04-19 | 麦王环境技术股份有限公司 | Complete equipment for stainless steel pickling wastewater treatment and resource recycling and treatment process |
| CN105621744A (en) * | 2016-03-07 | 2016-06-01 | 山东国信环境系统股份有限公司 | Copper ore acid wastewater treatment and recovery device and method |
| CN105621744B (en) * | 2016-03-07 | 2018-04-06 | 山东国信环境系统股份有限公司 | Copper mine acid waste water handles retracting device and its method |
| CN106380043A (en) * | 2016-11-11 | 2017-02-08 | 北京科泰兴达高新技术有限公司 | Membrane process sewage deep treatment reuse system |
| CN111153541A (en) * | 2019-12-25 | 2020-05-15 | 常熟市异型钢管有限公司 | Recycling method of titanium alloy pipe pickling waste liquid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106565045A (en) | Complete equipment for stainless steel pickling wastewater treatment and resource recycling and treatment process | |
| CN108529802B (en) | Zero-discharge process for discharging high-salt-content wastewater in titanium dioxide production | |
| CN101987767B (en) | Method for producing wastewater with high ammonia nitrogen and high salinity by treating rare earth with membrane integration | |
| CN205061777U (en) | Stainless steel pickling waste water treatment and resource recovery integrated equipment | |
| CN205603386U (en) | Strong brine zero release membrane concentrator | |
| CN105439341A (en) | Salt-containing wastewater treatment system and treatment method | |
| CN105347574A (en) | Fluoride removal method of graphite purification waste water and processing system | |
| CN104909494A (en) | Process for impurity removal and purification of industrial high-concentration brine and special equipment of process | |
| CN114180768A (en) | Multi-stage nanofiltration salt separation system for separating sodium sulfate and sodium chloride in coking wastewater and method for treating wastewater by using same | |
| CN103341321A (en) | Viscose sodium sulfate waste liquor acid and alkali recycling technology by virtue of bipolar membrane electrodialysis method | |
| CN107055898A (en) | A kind of chromate waste water processing and recovery process | |
| CN108793568A (en) | A kind of stainless steel cleaning containing acid wastewater zero discharge waste water unit equipment | |
| CN201999826U (en) | Recycle treatment equipments for electroplating wastewater | |
| CN112607925B (en) | Silicon steel dilute acid wastewater zero-discharge treatment method and system | |
| CN107572732B (en) | Sewage treatment system for hazardous waste treatment plant | |
| CN202881038U (en) | Electroplating waste water separation and recycling treatment apparatus | |
| CN105481160B (en) | Method and device for preparing industrial salt by strong brine with zero discharge | |
| CN218811188U (en) | Zinc-nickel-containing wastewater recycling treatment system | |
| CN106430701A (en) | High-salinity water purifying treatment system | |
| CN105692992A (en) | Recycling and disposal system for nickel-containing wastewater | |
| CN100386475C (en) | Water comprehensive utilization technology for cleaning electroplating nickel | |
| CN110143710A (en) | Formation foil production line Sewage treatment utilizes method | |
| CN115557652A (en) | Recycling treatment system and method for zinc-nickel-containing wastewater | |
| CN112194298B (en) | System and method for recycling wastewater of whole power plant | |
| CN111875094B (en) | Comprehensive treatment process for beryllium-containing wastewater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |