CN107311345A - A kind of waste acidity recovery method and apparatus - Google Patents

A kind of waste acidity recovery method and apparatus Download PDF

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Publication number
CN107311345A
CN107311345A CN201710629752.8A CN201710629752A CN107311345A CN 107311345 A CN107311345 A CN 107311345A CN 201710629752 A CN201710629752 A CN 201710629752A CN 107311345 A CN107311345 A CN 107311345A
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CN
China
Prior art keywords
resin
acid
tank
recovery
resin tank
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Pending
Application number
CN201710629752.8A
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Chinese (zh)
Inventor
丁保玉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kehai Si (beijing) Technology Co Ltd
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Kehai Si (beijing) Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kehai Si (beijing) Technology Co Ltd filed Critical Kehai Si (beijing) Technology Co Ltd
Priority to CN201710629752.8A priority Critical patent/CN107311345A/en
Publication of CN107311345A publication Critical patent/CN107311345A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/42Treatment of water, waste water, or sewage by ion-exchange
    • C02F2001/422Treatment of water, waste water, or sewage by ion-exchange using anionic exchangers
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00Apparatus for treatment of water, waste water or sewage
    • C02F2201/002Construction details of the apparatus
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/08Multistage treatments, e.g. repetition of the same process step under different conditions

Abstract

The present invention relates to waste acidity recovery reutilization technology field, in particular to a kind of waste acidity recovery method and apparatus.Methods described enters spent acid equipped with sour absorption is carried out in the resin tank body for inhaling acid resin through entering sour pump supercharging after filtering, and the waste water of saliferous not to be adsorbed drains into wastewater collection pond through delivery port;The resin tank body height≤500mm, the resin filled is spherical particle resin.The method that the present invention is provided is with the obvious advantage in terms of waste acidity recovery, it is small with floor space, it is easy to operate, acid recovering rate is 95%, recovery acid concentrations versus has a certain degree of concentration in former spent acid free acid concentration, spent acid free acid concentration can be concentrated to 20%~30% in 10%~15% obtained pure acid of concentration, and the pure sour metal salt residual quantity of gained can meet the application of enterprise below 1 g/l.

Description

A kind of waste acidity recovery method and apparatus
Technical field
The present invention relates to waste acidity recovery reutilization technology field, in particular to a kind of waste acidity recovery method and apparatus.
Background technology
Because metallic article has the advantages that a lot in use, the metallic article of difference in functionality is largely manufactured, and should In life for industrial production and people, and often made a return journey in metal finish industry with strong inorganic acid (sulfuric acid, nitric acid, hydrochloric acid) Except the oxide on surface with reduce to subsequent production operate influence.Largely these oxides are dissolved by acid, And as the concentration of the increase free acid of the metal concentration of dissolving is also accordingly reduced.Although can by way of adding eo-acid come Increase the concentration of acid, but when metal concentration increase, oxide removal efficiency would generally be reduced, when oxide skin is no longer filled When dividing removal, these acid solutions, which must just be done, scraps processing.If directly discharged spent acid, serious environment can be caused dirty Dye, wastes resource, so typically can all be recycled to spent acid.Traditional waste acidity recovery method has:Neutralisation, spray Mist roasting method, diffusive dialysis method, extraction and condensing crystallizing method, in recent years, recent studies on have gone out a kind of environmental protection, the spent acid of energy-conservation Recovery method, i.e. acid block technique.Acid block technique is a kind of based on strong-base anion-exchange resin nonionic exchange adsorption Strong acid, without adsorbing corresponding salt, so as to realize the technology that the purpose for reaching waste acid recovery is separated between acid and salt.Acid retardance skill Art waste acid recovery is in addition to water, it is not necessary to any chemical reagent, has adsorbed the resin bed of strong acid, it is only necessary to which being rinsed with water can be real The elution and resin regeneration of existing acid.
The existing apparatus structure for acid block technique is more complicated, and floor space is big, also exist resin easily by Pollute and scrap, the rate of recovery of acid is low, recovery acid impurity is more, the recovery low problem of acid concentration, the recycling effect of spent acid compared with Difference.
In view of this, it is special to propose the present invention.
The content of the invention
It is above-mentioned to solve it is an object of the invention to provide a kind of waste acidity recovery method and the equipment of implementation methods described Problem.
In order to realize the above-mentioned purpose of the present invention, spy uses following technical scheme:
According to an aspect of the present invention, the present invention relates to a kind of waste acidity recovery method, by spent acid after filtering through entering sour pump Supercharging drains into useless into the waste water equipped with the sour absorption of progress in the resin tank body for inhaling acid resin, saliferous not to be adsorbed through delivery port Water collecting pit;
The resin tank body height≤500mm, the suction acid resin is spherical particle resin.
The method that the present invention is provided is with the obvious advantage in terms of waste acidity recovery, small with floor space, easy to operate, acid recovering rate 95%, recovery acid concentrations versus has a certain degree of concentration in former spent acid free acid concentration, and spent acid free acid concentration is 10% The pure acid that~15% concentration is obtained can be concentrated to 20%~30%, the pure sour metal salt residual quantity of gained 1 g/l with Under, the application of enterprise can be met.
The invention further relates to implement the acid recovery plant of method as described above,
Including the coarse filtration pump being sequentially connected with, coarse filter, fine filter, raw material acid tank, enter sour pump, filled with described Inhale the resin tank body and wastewater collection pond of acid resin;
The feed end of the resin tank body is also associated with recovery acid tank;
The discharge end of the resin tank body is also associated with rinsing water pot.
Compared with prior art, beneficial effects of the present invention are:
1), the application of fine resin particles, adds the specific surface area of unit volume, improves kinetics;And it is right Resin particle has done the pretreatment work of salt bubble compacting, greatly reduces the space between resin and tank body between resin particle, Spent acid residual quantity is extremely low, it is ensured that the degree of purity of cleaning acid;
2), the application of short resin bed, reduces pressure drop and equipment size;Optimize the water distributor structure of resin container, very big Cross-sectional area under meet water distribution uniformity, to solve the problem of trundle bed resin water distribution is uneven, realize high efficiente callback;
3), the design of fixing resin bed, reduces raffinate amount as far as possible, reduces the recovery time, improves recovery acid purity and concentration;
4), the mode of adverse current water inlet, improves the chemical efficiency of charging and regeneration step to greatest extent.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, in describing below Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid Put, other accompanying drawings can also be obtained according to these accompanying drawings.
The schematic diagram for the acid recovery plant that Fig. 1 provides for the present invention;
Fig. 2 is the resin tank body structural representation of flange sealing structure of the present invention.
Reference:
Coarse filtration pump 1., coarse filter 2., fine filter 3., raw material acid tank 4., enter sour pump 5., acid inlet valve 6., recovery acid Valve 7., recovery acid tank 8., resin tank body 9., waste liquid blowoff valve 10., water intaking valveRinse water potFlushing pumpWastewater collection Pond
Embodiment
Often the oxide on surface is removed in metal finish industry with strong inorganic acid (sulfuric acid, nitric acid, hydrochloric acid, hydrofluoric acid) To reduce the influence operated to subsequent production.Largely these oxides are dissolved by acid, and with dissolving The concentration of the increase free acid of metal concentration is also accordingly reduced.Although the concentration of acid can be increased by way of adding eo-acid, But when metal concentration increase, oxide removal efficiency would generally be reduced, when oxide skin is no longer sufficiently removed, These acid solutions, which must just be done, scraps processing.The present invention can reach free acid and metal using the free acid in resin waste acid recovery The purpose of salt separation, and can slightly be lifted in the concentration of former spent acid, increase the benefit of enterprise, reduction sewage disposal into This.
Specifically, the present invention relates to a kind of waste acidity recovery method, spent acid is equipped with through entering sour pump supercharging entrance after filtering Inhale and sour absorption is carried out in the resin tank body of acid resin, the waste water of saliferous not to be adsorbed drains into wastewater collection pond through delivery port;
The resin tank body height≤500mm, the resin filled is spherical particle resin.
It is preferred that, the resin tank body is highly 100mm~450mm;Or 200mm~400mm;300mm can also be selected.
In the prior art, resin tank body is too high, and 1000mm resin tank body can cause spent acid during acid retardance The rate of recovery declines, and the rate of recovery is 80% or so.The present invention uses trundle bed technology and realizes high efficiente callback.
It is preferred that, waste acidity recovery method as described above, the method that the resin tank body is filled in the resin tank body Including:
After the full resin tank body of particulate resin filling, 2h is soaked with 8wt%~12wt% sodium chloride solution Then~3h, resin fills up resin tank body again in tank body contract with new resin, then cleans with clear water resin tank body.
Current this area resin process does spent acid processing and uses strong-base anion-exchange resin, the particle diameter model of resin Enclose space between 0.3mm~1.2mm, resin particle bigger than normal, and resin is all directly to fill up, after spent acid enters resin system Due to the environment of peracid high metal salt, resin particle has contraction, and it is residual to have substantial amounts of spent acid in resin container body before washing Liquid, this causes to clean obtained acid solution degree of purity not enough, and metal salt concentration is at 10 g/l.This technique uses fine granular resin, Particle size range has done the pretreatment work of salt bubble compacting in 0.1mm~0.3mm, greatly reduce between resin particle and Space between resin and tank body, spent acid residual quantity is extremely low, it is ensured that the degree of purity of cleaning acid;
It is preferred that, waste acidity recovery method as described above, the spherical particle resin is crosslinked polystyrene.
It is preferred that, waste acidity recovery method as described above, the granularity of the spherical particle resin is 0.1mm~0.3mm, more Preferably 0.15mm~0.25mm, or 0.2mm.
It is preferred that, waste acidity recovery method as described above, the resin tank body is counter fixed bed;
It is furthermore preferred that spent acid is entered equipped with progress acid in the resin tank body for inhaling acid resin through entering sour pump supercharging after filtering During absorption, spent acid adverse current is pumped into the resin tank body;When cleaning resin progress resin regeneration, water enters in the way of following current is intake Enter the resin tank body.
It is preferred that, waste acidity recovery method as described above, precision≤1 μm of the filtering, more preferably 0.1 μm~1 μm, Or 0.5 μm.
Technique front end uses high-efficiency filtration systems, and filtering accuracy maintains less than 1 micron, it is ensured that resin system it is efficient Operation, resin type selecting is preferably Tulsion A-853E, and particle size range 0.1nm~0.3mm, resin framework is crosslinking polyphenyl second The resin particle diameter of alkene, far smaller than home equipment, and the applicable hydrochloric acid of application of this resin balls, sulfuric acid, nitric acid, hydrofluoric acid or The recovery of its nitration mixture.Resin parameter is as follows:
Type Strong basic type anion-exchange resin
Framework Crosslinked polystyrene
Ionic formses Chlorine type
Physics pattern Moisten spherical particle
Granularity 0.1-0.3mm
Exchange capacity 1.3meq/ml
Backwash stable density 690-720g/l
Maximum operating temp 60℃
Dissolubility Insoluble in any organic solvent
The processing request of resin tank body is highly less than 500mm, is processed in acid recovery resin tank body, and resin is filled into full Afterwards, resin is soaked with 10% sodium chloride solution, then soak time 2~3 hours, resin uses new resin in tank body contract Again resin tank body is filled up.The principle of this technique for applying is, resin balls retardance free acid, will not adsorbing metal ions, but by Gap is had between resin balls and ball and between resin balls and tank body, clearance space can remain acid pickle, and in acid pickle Metal salt concentration is very high, can so influence the sour degree of purity for washing, and it is to obtain acid solution to improve that gap is reduced as far as possible Degree of purity, just can farthest reduce resin balls and ball and resin balls by way of saline sook and again supplemental tree fat Gap between tank body.Such result can ensure not have a large amount of residuals of spent acid during spent acid is entered, in resin The acid solution degree of purity obtained during the saturation cleaning of absorption acid solution is very high, and acid solution metal salt residual quantity is below 1 g/l, punching Wash water is less, and acid solution has concentrated effect, it is ensured that acid solution will not excessive buildup.
It is preferred that, waste acidity recovery method as described above, the resin tank body uses flange sealing structure;It is furthermore preferred that Water distribution through hole is provided with the upper lower flange of the resin tank body;Water distribution through hole be provided with it is multiple, for spent acid processing and Water distribution uniformity during resin regeneration, it is contemplated that technology difficulty and water distribution efficiency, the aperture of through hole preferably is 2mm~3mm;Due to logical The aperture in hole is more than the particle diameter of the spherical resin particle, therefore it is furthermore preferred that the upper and lower surface of the ring flange is additionally provided with Filter plate and/or filter cloth, the aperture of the filter plate and/or filter cloth are less than the particle diameter of resin particle, more preferably≤0.08mm;It is more excellent Choosing, filter plate and/or the selection of filter cloth material of resistance to sour.
It is furthermore preferred that the flange sealing structure be selected from slip-on-welding plate flange, hubbed clip-on-welding flange, band neck W.N flange, Integral (type) flange, socket welding flange, screwed flange, blank flange.
Flange, or ring flange, it is intended that the symmetrical plate-like knot used in connecting pipe, container or fixing axle class mechanical part Structure, generally has bolt, helicitic texture as a means of fixation.
This technique uses flange sealing structure (its schematic diagram is as shown in Figure 2), and resin is close by resin tank body after filling up again Envelope, the salt solution then entered by cleaning pump in pure water cleaning resin bed, resin is washed away rear resin particle and loses salt expansion to resin Tank body shell wall and up and down top cover have a certain pressure, and such resin is at highly desirable filling up compaction state in tank body.By The resin particle diameter used in this technique is far smaller than the resin particle diameter that prior art acid recovery system is used, and has cooked salt bubble The space filled up between the processing of compacting, resin particle can be minimum, and resin particle does not have unfilled in resin container body Clearance spaces, such result can ensure not have a large amount of residuals of spent acid during spent acid is entered, in resin adsorption acid solution Obtained acid solution degree of purity is very high during saturation is cleaned, acid solution metal salt residual quantity below 1 g/l,
It is preferred that, waste acidity recovery method as described above, the spent acid is the waste liquid containing strong inorganic acid;
It is furthermore preferred that the strong inorganic acid includes the one or more in sulfuric acid, nitric acid, hydrochloric acid, hydrofluoric acid.
Technical scheme is clearly and completely described below in conjunction with the drawings and specific embodiments, but Be it will be understood to those of skill in the art that following described embodiment is a part of embodiment of the invention, it is rather than whole Embodiment, is merely to illustrate the present invention, and is not construed as limiting the scope of the present invention.Based on the embodiment in the present invention, ability The every other embodiment that domain those of ordinary skill is obtained under the premise of creative work is not made, belongs to guarantor of the present invention The scope of shield.Unreceipted actual conditions person in embodiment, the condition advised according to normal condition or manufacturer is carried out.Agents useful for same Or the unreceipted production firm person of instrument, it is the conventional products that can be obtained by commercially available purchase.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ", The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to Be easy to the description present invention and simplify description, rather than indicate or imply signified device or element must have specific orientation, With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ", " the 3rd " is only used for describing purpose, and it is not intended that indicating or implying relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected;Can To be mechanical connection or electrical connection;Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this Concrete meaning in invention.
As shown in figure 1, the acid recovery plant for the implementation method as described above that the present invention is provided, including be sequentially connected with it is thick Filter pump 1., coarse filter 2., fine filter 3., raw material acid tank 4., enter the resin of sour pump 5., filled with described suction acid resin 9. and wastewater collection pond tank body
8. the feed end of the resin tank body 9. is also associated with recovery acid tank;
The discharge end of the resin tank body 9. is also associated with rinsing water pot
It is preferred that, acid recovery plant as described above, it is described enter sour pump 5. with the resin tank body 9. between be provided with Acid inlet valve is 6.;
The resin tank body 9. with the wastewater collection pondBetween be provided with waste liquid blowoff valve 10.;
The resin tank body 9. with the recovery acid tank 8. between be provided with recovery acid valve 7.;
The resin tank body 9. with the flushing water potBetween be provided with water intaking valve
It is preferred that, acid recovery plant as described above, the coarse filter 2., fine filter 3., raw material acid tank 4., tree Fat tank body 9., recovery acid tank 8. in one or more devices case material be the acidproof material of anti-corrosion;More preferably carbon steel adds The material of corrosion-proof lining, and/or fiberglass.
It is preferred that, acid recovery plant as described above, the flushing water potWith the resin tank body 9. between also set up There is flushing pump
As shown in figure 1, the equipment that provides of the present invention operationally the step of it is as follows:Open acid inlet valve 6. with blowoff valve 10. Valve, recovery acid valve 7. and water intaking valveValve close after, spent acid after 1. coarse filtration pump is pressurized enter coarse filter 2. Filtration treatment is 3. done with fine filter, the filtering accuracy of fine filter 3. is at 1 μm or so, and 3. water outlet enters raw material acid to fine filter 4., 4. middle spent acid spent acid after entering sour pump and being 5. pressurized enters resin tank body 9. resin to raw material acid tank to tank in the way of countercurrently intaking 9. the system of subject of recovery acid, resin tank body is adsorbed onto free acid on resin, and the waste water containing metal salt is drained into through delivery port Wastewater collection pond6. and 10. 1. and 5. this process cut off within 10~20 minutes and close valve, then opens recovery acid valve 7. And water intaking valveStart flushing pumpWater pot will be rinsedIn clear water be delivered to by increase in resin tank body, entered with following current The mode of water cleans resin bed, and 8. 7. pure acid solution be delivered to recovery acid tank by valve, this process progress 3~7 minutes, then Process before repeating continues into spent acid.
This technique is using the full bed technique of trundle bed, and height of bed maximum control is in 500mm, and resin uses fine granular resin particle Footpath farthest reduces raffinate amount in 0.1~0.3mm, the application of this technique, it is ensured that the pure sour degree of purity (metal of cleaning gained Salt remains less than 1 g/l), and free acid the rate of recovery (95%), the pre-filtering technique of front end reached that high filtering is smart Degree, can meet the permanently effective operation of resin system, and the size of equipment can be determined according to specific spent acid amount, meet enterprise The application of industry.
Finally it should be noted that:Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations;To the greatest extent The present invention is described in detail with reference to foregoing embodiments for pipe, but it will be understood by those within the art that:Its The technical scheme described in foregoing embodiments can still be modified, or to which part or all technical characteristic Carry out equivalent substitution;And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention skill The scope of art scheme.

Claims (10)

1. a kind of waste acidity recovery method, it is characterised in that enter spent acid equipped with suction acid resin through entering sour pump supercharging after filtering Resin tank body in carry out sour absorption, the waste water of saliferous not to be adsorbed drains into wastewater collection pond through delivery port;
The resin tank body height≤500mm, the suction acid resin is spherical particle resin.
2. waste acidity recovery method according to claim 1, it is characterised in that the suction acid resin is filled in the resin The method of tank body includes:
After the full resin tank body of particulate resin filling, 2h~3h is soaked with 8wt%~12wt% sodium chloride solution, Then resin fills up resin tank body again in tank body contract with new resin, then cleans with clear water suction acid resin.
3. waste acidity recovery method according to claim 1, it is characterised in that the spherical particle resin is crosslinking polyphenyl second Alkene.
4. waste acidity recovery method according to claim 1, it is characterised in that the granularity of the spherical particle resin is 0.1mm~0.3mm.
5. waste acidity recovery method according to claim 1, it is characterised in that the resin tank body is fixed for counter Bed;
It is preferred that, spent acid is entered equipped with the sour absorption of progress in the resin tank body for inhaling acid resin through entering sour pump supercharging after filtering When, spent acid adverse current is pumped into the resin tank body;When cleaning resin progress resin regeneration, water enters institute in the way of following current is intake State resin tank body.
6. waste acidity recovery method according to claim 1, it is characterised in that precision≤1 μm of the filtering.
7. waste acidity recovery method according to claim 1, it is characterised in that the resin tank body uses flange seal knot Structure;
It is preferred that, it is provided with water distribution through hole on the upper lower flange of the resin tank body;
It is furthermore preferred that the upper and lower surface of the ring flange is additionally provided with filter plate and/or filter cloth.
8. waste acidity recovery method according to claim 1, it is characterised in that the spent acid is useless containing strong inorganic acid Liquid;
It is preferred that, the strong inorganic acid includes the one or more in sulfuric acid, nitric acid, hydrochloric acid, hydrofluoric acid.
9. implement the acid recovery plant of any one of claim 1~8 methods described, it is characterised in that including what is be sequentially connected with Coarse filtration pump, coarse filter, fine filter, raw material acid tank, enter sour pump, the resin tank body filled with described suction acid resin and Wastewater collection pond;
The feed end of the resin tank body is also associated with recovery acid tank;
The discharge end of the resin tank body is also associated with rinsing water pot;
It is preferred that, it is described to enter to be provided with acid inlet valve between sour pump and the resin tank body;
Waste liquid blowoff valve is provided between the resin tank body and the wastewater collection pond;
Recovery acid valve is provided between the resin tank body and the recovery acid tank;
Water intaking valve is provided between the resin tank body and the flushing water pot;
It is furthermore preferred that being additionally provided with flushing pump between the flushing water pot and the resin tank body.
10. acid recovery plant according to claim 9, it is characterised in that the coarse filter, fine filter, raw material The case material of one or more devices in sour tank, resin tank body, recovery acid tank is the acidproof material of anti-corrosion;More preferably carbon steel Plus the material of corrosion-proof lining, and/or fiberglass.
CN201710629752.8A 2017-07-28 2017-07-28 A kind of waste acidity recovery method and apparatus Pending CN107311345A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201710629752.8A CN107311345A (en) 2017-07-28 2017-07-28 A kind of waste acidity recovery method and apparatus

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110468423A (en) * 2019-08-07 2019-11-19 江苏斯德雷特通光光纤有限公司 A kind of the HF remnant liquid recovering device and application method of pickler
CN110697919A (en) * 2019-10-14 2020-01-17 江苏永葆环保科技有限公司 Method for efficiently recovering electrode foil waste acid by using special short bed acid retardation resin
CN111186873A (en) * 2019-12-10 2020-05-22 苏州博睿特环保科技有限公司 Method for realizing resource treatment of waste acid by resin adsorption
CN111892220A (en) * 2020-07-15 2020-11-06 李喜仁 Equipment and method for treating smelting flue gas waste acid
CN111960392A (en) * 2020-08-12 2020-11-20 中冶南方工程技术有限公司 Mixed acid waste liquid resource recovery system and process
CN112279440A (en) * 2020-05-27 2021-01-29 江苏国瑞科技有限公司 Recycling process of waste acid

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110468423A (en) * 2019-08-07 2019-11-19 江苏斯德雷特通光光纤有限公司 A kind of the HF remnant liquid recovering device and application method of pickler
CN110468423B (en) * 2019-08-07 2021-10-22 江苏斯德雷特通光光纤有限公司 HF residual liquid recovery device of pickling equipment and use method
CN110697919A (en) * 2019-10-14 2020-01-17 江苏永葆环保科技有限公司 Method for efficiently recovering electrode foil waste acid by using special short bed acid retardation resin
CN111186873A (en) * 2019-12-10 2020-05-22 苏州博睿特环保科技有限公司 Method for realizing resource treatment of waste acid by resin adsorption
CN112279440A (en) * 2020-05-27 2021-01-29 江苏国瑞科技有限公司 Recycling process of waste acid
CN111892220A (en) * 2020-07-15 2020-11-06 李喜仁 Equipment and method for treating smelting flue gas waste acid
CN111960392A (en) * 2020-08-12 2020-11-20 中冶南方工程技术有限公司 Mixed acid waste liquid resource recovery system and process

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