CN108793568A - A kind of stainless steel cleaning containing acid wastewater zero discharge waste water unit equipment - Google Patents
A kind of stainless steel cleaning containing acid wastewater zero discharge waste water unit equipment Download PDFInfo
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- CN108793568A CN108793568A CN201810994471.7A CN201810994471A CN108793568A CN 108793568 A CN108793568 A CN 108793568A CN 201810994471 A CN201810994471 A CN 201810994471A CN 108793568 A CN108793568 A CN 108793568A
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- stainless steel
- acid
- concentration
- waste water
- zero discharge
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- 239000002253 acid Substances 0.000 title claims abstract description 84
- 239000002351 wastewater Substances 0.000 title claims abstract description 61
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 43
- 239000010935 stainless steel Substances 0.000 title claims abstract description 43
- 238000004140 cleaning Methods 0.000 title claims abstract description 35
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 41
- 235000021110 pickles Nutrition 0.000 claims abstract description 39
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 229920005989 resin Polymers 0.000 claims abstract description 25
- 239000011347 resin Substances 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 19
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 18
- 239000011651 chromium Substances 0.000 claims abstract description 18
- 238000000926 separation method Methods 0.000 claims abstract description 18
- 239000006228 supernatant Substances 0.000 claims abstract description 14
- 238000011084 recovery Methods 0.000 claims abstract description 13
- 238000001179 sorption measurement Methods 0.000 claims abstract description 13
- 238000012545 processing Methods 0.000 claims abstract description 12
- 239000012141 concentrate Substances 0.000 claims abstract description 10
- 238000002425 crystallisation Methods 0.000 claims abstract description 7
- 230000008025 crystallization Effects 0.000 claims abstract description 7
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 7
- 238000001704 evaporation Methods 0.000 claims abstract description 7
- 230000008020 evaporation Effects 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims abstract description 4
- 239000010802 sludge Substances 0.000 claims description 25
- 208000028659 discharge Diseases 0.000 claims description 24
- 229910021645 metal ion Inorganic materials 0.000 claims description 19
- 239000002699 waste material Substances 0.000 claims description 17
- 150000002500 ions Chemical class 0.000 claims description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 11
- 238000005516 engineering process Methods 0.000 claims description 11
- 238000005260 corrosion Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 150000003839 salts Chemical class 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 7
- 229920002401 polyacrylamide Polymers 0.000 claims description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 239000012466 permeate Substances 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 6
- 229910001385 heavy metal Inorganic materials 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 229910001430 chromium ion Inorganic materials 0.000 claims description 4
- 150000004965 peroxy acids Chemical class 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 239000013618 particulate matter Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000000047 product Substances 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 238000004062 sedimentation Methods 0.000 claims description 3
- 239000002910 solid waste Substances 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 231100000331 toxic Toxicity 0.000 claims description 3
- 230000002588 toxic effect Effects 0.000 claims description 3
- 230000003064 anti-oxidating effect Effects 0.000 claims description 2
- 239000000701 coagulant Substances 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 claims 1
- 150000001412 amines Chemical class 0.000 claims 1
- 239000004615 ingredient Substances 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 3
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/24—Alloys obtained by cathodic reduction of all their ions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/06—Pressure conditions
- C02F2301/066—Overpressure, high pressure
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of stainless steel wastewater zero discharge waste water unit equipments of cleaning containing acid to be drawn into the liquid input stainless steel cleaning wastewater collection pond of stainless steel cleaning spent acid source stainless steel cleaning spent acid source liquid in the first integrated settling system and carry out preliminary treatment；Treated, and stainless steel cleaning spent acid source liquid is entered in acid pickle concentrated separation system and is handled by the first bag filter and acid pickle baffle-box；Concentrate is sent into electrolytic recovery nickel, chromium system by the effect of high-pressure pump；Acid pickle after electrolysis is entered by the supernatant that the second integrated settling system obtains in supernatant collection case；Supernatant enters the processing of high pressure concentration systems by the production water of resin adsorption system；The highly enriched liquid of high pressure concentration systems enters evaporation and crystallization system.The beneficial effects of the invention are as follows：It realizes processing stainless steel cleaning containing acid waste water circulation and stress and reuse, and can realize wastewater zero discharge purpose, reduce floor space, reduce the pollution to environment.
Description
Technical field
The present invention relates to a kind of environmental protection equipment, the wastewater zero discharge waste water combination of cleaning containing acid of specifically a kind of stainless steel is set
It is standby.
Background technology
In many stainless steel material industrial production processing technologys, often it will produce many containing being carried in peracid and acid solution
The waste water such as heavy metal ion (nickel, chromium).Not only processing cost is high for this kind of waste water, and intractability is very big, a huge sum of money in processing water outlet
Belong to ion and discharging standards are often not achieved, it is very harmful caused by environment, it is considered as high-risk waste water.Conventional process uses
The techniques such as neutralization+materialization flocculating setting+filtering, not only the consumption of lye is very big, and sludge quantity is big, and the heavy metal in waste water from
Son is also extremely difficult thoroughly to be gone, and disposed of in its entirety is costly, at the bottleneck of enterprise development.This system is for the stainless steel waste water of cleaning containing acid
Using zero-emission unit equipment technology, modularized design is applied for a patent, design feature is more specialized, operation is more simplified,
More stableization is run, equipment investment is less, and the design of zero-emission formula is fully achieved to the stainless steel waste water of cleaning containing acid.
Invention content
The purpose of the present invention is to provide a kind of stainless steel wastewater zero discharge waste water unit equipments of cleaning containing acid, in solution
State the problem of being proposed in background technology.
To achieve the above object, the present invention provides the following technical solutions：
A kind of stainless steel cleaning containing acid wastewater zero discharge waste water unit equipment, follows the steps below：
A, it is cleaned in wastewater collection pond to stainless steel and injects pending stainless steel cleaning spent acid source liquid, promoted by anti-corrosion
Stainless steel cleaning spent acid source liquid is drawn into the first integrated settling system by pump, is removed in acid pickle by stopping free settling
Suspended matter and partial impurities are passing through the further advanced treating of the first bag filter, it is therefore an objective to which water outlet meets acid pickle concentration
The influent quality requirement of piece-rate system, the suspended matter obtained by free settling discharge into sludge by sludge pump with partial impurities and receive
Collect in pond, is discharged into the sludge in sludge collecting pit in filter press by sludge pump, the pressing filtering liquid that filter press works is again
It enters in stainless steel cleaning wastewater collection pond and is reprocessed；
B, by the first bag filter, treated that acid pickle enters in acid pickle baffle-box, and acid pickle passes sequentially through
Anti-corrosion booster pump and anti-corrosion high pressure concentrating pump are entered in acid pickle concentrated separation system and are handled, and are cleaned for stainless steel useless
The metalloform-selectives such as nickel, chromium are concentrated and separated in acid ion and waste liquid in liquid, and acid pickle is driven by high-pressure pump, warp
Extraordinary acid solution concentration and separation film is crossed, under pressure, acid ion is entered through seperation film and obtained through in acid solution collecting box
With recycling, and the metal ions such as nickel, chromium are then trapped concentration in waste liquid, to reach the recycling of first step acid solution and metal ion point
From purpose；
C, by concentration and separation collect after acid pickle in, metal ion nickel, chromium concentration, be that stoste metal ion is dense
Tens times of degree, by using centrifugal electrolytic recovery technology, metal ion nickel, the waste liqouor in acid pickle are returned；
D, the acid pickle after electrolysis is entered by collecting pipe and carries out pH value adjustment and oneself in the second integrated settling system
By settling, wherein pH value is adjusted by sulfuric acid and sodium hydroxide, while being added poly- third into the second integrated settling system
Acrylamide and poly-aluminium, the product after sedimentation are discharged by sludge pump in sludge-tank, and the supernatant obtained after settling is from flowing into
In clear liquid collecting box；
E, the supernatant in supernatant collection case runs the under the action of of pumping in resin and passes sequentially through active carbon filter and the
Two bag filters enter in resin adsorption system, and nickeliferous, chromium ion waste water enters resin adsorption system, for nickel, chromium from
Son is adsorbed, and after resin adsorption is saturated, resin desorbed solution is drained into electrolysis system, is electrolysed again to metallic nickel, chromium
Recycling, resin flushing liquor are drained into integrated settling system settlement treatment again, and resin adsorption system production water enters next stage height
Press concentration systems processing；
F, high pressure concentration systems produce the further advanced treating of water for resin system, will be in waste water by extraordinary RO membrane technologies
High salt component is concentrated and separated, and concentration process is divided into two sections of progress.First segment operation can be high according to the salt difficulty in waste water
It is low to adjust operating pressure；Water inlet of the first order concentrate as second segment concentration systems, second segment concentration systems permeate can
According to the reuse of effluent quality situation or primary concentration system is flowed back into, the supplement as primary concentration system is intake；It not only can be with
The rate of recovery for improving waste water, can also reduce raw water quality concentration；The permeate of first order concentration systems can direct reuse in life
Production. art and membranous system water for cleaning；The highly enriched liquid of second segment concentration systems enters rear end evaporation and crystallization system；
G, vapo(u)rization system will contain concentrate with high salt by feed pump, concentrate is squeezed into evaporator and is evaporated, and evaporation is cold
Lime set is collected, and high pressure concentration systems front end is flowed back by reflux pump, is re-used as the water inlet of high pressure concentration systems, evaporates brilliant paddle liquid
It is discharged into crystallizer, crystallization solid waste does the useless processing of prestige, and whole system is completed to clean stainless steel the zero discharge treatment of waste liquid.
As a further solution of the present invention：The sludge obtained after the filter press press filtration, which discharges into sludge concentration tank, to be passed through
External equipment is transported.
As a further solution of the present invention：The acid pickle concentrated separation system is using resistance to peracid, high pollution, high antioxygen
Change special separation film.
As a further solution of the present invention：Metal ion in the electrolytic recovery nickel, chromium system passes through electrolytic recovery
Afterwards, the metal ion in acid pickle is controlled in 100PPm or less.
As a further solution of the present invention：The poly-aluminium is also known as PAC, has in height electricity to water-borne glue body and particulate matter
With and bridge linking effect, and can strongly remove micro- Toxic and heavy metal ion.
As a further solution of the present invention：The polyacrylamide is also known as PAM, is a kind of common nonionic high score
Sub- flocculant.
As a further solution of the present invention：The high pressure concentration systems use special type RO film concentration techniques.
As a further solution of the present invention：When first segment is run in the high pressure concentration systems, waste strength exists
30000PPM is hereinafter, its operating pressure is selected in 30-50KG or so；When second segment is run, the operating pressure of concentration systems is in 55-
Between 70KG.
Compared with prior art, the beneficial effects of the invention are as follows：Technical equipment provided by the invention can realize that processing is stainless
Steel cleaning containing acid waste water circulation and stress and reuse, and can realize wastewater zero discharge purpose, floor space is reduced, is reduced to environment
Pollution.
Description of the drawings
Fig. 1 is a kind of process flow chart of stainless steel wastewater zero discharge waste water unit equipment of cleaning containing acid.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, in the embodiment of the present invention, a kind of stainless steel cleaning containing acid wastewater zero discharge waste water unit equipment is pressed
It is carried out according to following steps：
A, it is cleaned in wastewater collection pond to stainless steel and injects pending stainless steel cleaning spent acid source liquid, promoted by anti-corrosion
Stainless steel cleaning spent acid source liquid is drawn into the first integrated settling system by pump, is removed in acid pickle by stopping free settling
Suspended matter and partial impurities are passing through the further advanced treating of the first bag filter, it is therefore an objective to which water outlet meets acid pickle concentration
The influent quality requirement of piece-rate system, the suspended matter obtained by free settling discharge into sludge by sludge pump with partial impurities and receive
Collect in pond, is discharged into the sludge in sludge collecting pit in filter press by sludge pump, the pressing filtering liquid that filter press works is again
It enters in stainless steel cleaning wastewater collection pond and is reprocessed, the sludge obtained after filter press press filtration discharges into sludge concentration tank
In transported by external equipment；
B, by the first bag filter, treated that acid pickle enters in acid pickle baffle-box, and acid pickle passes sequentially through
Anti-corrosion booster pump and anti-corrosion high pressure concentrating pump are entered in acid pickle concentrated separation system and are handled, acid pickle concentration and separation system
System is cleaned using resistance to peracid, high pollution, high anti-oxidation special separation film, for stainless steel in acid ion and waste liquid in waste liquid
The metalloform-selectives such as nickel, chromium are concentrated and separated, and acid pickle is driven by high-pressure pump, and film is concentrated and separated by extraordinary acid solution,
Under pressure, acid ion is entered through seperation film and is recycled through in acid solution collecting box, and nickel, chromium etc. in waste liquid
Metal ion is then trapped concentration, to achieve the purpose that the recycling of first step acid solution and separation of metal ions；
C, by concentration and separation collect after acid pickle in, metal ion nickel, chromium concentration, be that stoste metal ion is dense
Tens times of degree, by using centrifugal electrolytic recovery technologies, metal ion nickel, the waste liqouor in acid pickle are returned, passed through
After electrolytic recovery, the metal ion in acid pickle is controlled in 100PPm or less；
D, the acid pickle after electrolysis is entered by collecting pipe and carries out pH value adjustment and oneself in the second integrated settling system
By settling, wherein pH value is adjusted by sulfuric acid and sodium hydroxide, while being added poly- third into the second integrated settling system
Acrylamide and poly-aluminium, poly-aluminium are also known as PAC, have height charge neutrality and bridge linking effect to water-borne glue body and particulate matter, and can strength
Micro- Toxic and heavy metal ion are removed, polyacrylamide is also known as PAM, is a kind of common nonionic high polymer coagulant,
Product after sedimentation is discharged by sludge pump in sludge-tank, and the supernatant obtained after settling flows into supernatant collection case certainly；
E, the supernatant in supernatant collection case runs the under the action of of pumping in resin and passes sequentially through active carbon filter and the
Two bag filters enter in resin adsorption system, and nickeliferous, chromium ion waste water enters resin adsorption system, for nickel, chromium from
Son is adsorbed, and after resin adsorption is saturated, resin desorbed solution is drained into electrolysis system, is electrolysed again to metallic nickel, chromium
Recycling, resin flushing liquor are drained into integrated settling system settlement treatment again, and resin adsorption system production water enters next stage height
Press concentration systems processing；
F, high pressure concentration systems use special type RO film concentration techniques, produce the further advanced treating of water for resin system, lead to
It crosses special type RO membrane technologies to be concentrated and separated high salt component in waste water, concentration process is divided into two sections of progress；First segment operation can
Operating pressure is adjusted according to the salt difficulty height in waste water, when waste strength is in 30000PPM or less, operating pressure
Selection is in 30-50KG or so；Water inlet of the first order concentrate as second segment concentration systems, the operation pressure of second segment concentration systems
For power between 55-70KG, second segment concentration systems permeate according to the reuse of effluent quality situation or can flow back into primary concentration system
System, the supplement as primary concentration system are intake；The rate of recovery that waste water can not only be improved, it is dense can also to reduce raw water quality
Degree；The permeate of first order concentration systems can direct reuse in production technology and membranous system water for cleaning；Second segment concentration systems
Highly enriched liquid enter rear end evaporation and crystallization system；
G, vapo(u)rization system will contain concentrate with high salt by feed pump, concentrate is squeezed into evaporator and is evaporated, and evaporation is cold
Lime set is collected, and high pressure concentration systems front end is flowed back by reflux pump, is re-used as the water inlet of high pressure concentration systems, evaporates brilliant paddle liquid
It is discharged into crystallizer, crystallization solid waste does the useless processing of prestige, and whole system is completed to clean stainless steel the zero discharge treatment of waste liquid.
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art,
It still can be with technical scheme described in the above embodiments is modified, or is carried out to which part technical characteristic etc.
With replacing, all within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection domain of invention.
Claims (8)
1. a kind of stainless steel wastewater zero discharge waste water unit equipment of cleaning containing acid, follows the steps below：
A, it is cleaned in wastewater collection pond to stainless steel and injects pending stainless steel cleaning spent acid source liquid, it will by anti-corrosion elevator pump
Stainless steel cleaning spent acid source liquid is drawn into the first integrated settling system, is suspended by stopping in free settling removing acid pickle
Object and partial impurities are passing through the further advanced treating of the first bag filter, it is therefore an objective to which water outlet meets acid pickle concentration and separation
The influent quality requirement of system, the suspended matter obtained by free settling discharge into sludge collecting pit with partial impurities by sludge pump
In, the sludge in sludge collecting pit is discharged into filter press by sludge pump, the pressing filtering liquid that filter press works reenters
It cleans in wastewater collection pond and is reprocessed to stainless steel；
B, by the first bag filter, treated that acid pickle enters in acid pickle baffle-box, and acid pickle passes sequentially through anti-corrosion
Booster pump and anti-corrosion high pressure concentrating pump are entered in acid pickle concentrated separation system and are handled, and are cleaned in waste liquid for stainless steel
Acid ion and waste liquid in the metalloform-selectives concentration and separation such as nickel, chromium, acid pickle is driven by high-pressure pump, by spy
Kind acid solution is concentrated and separated film, and under pressure, acid ion is entered through seperation film and returned through in acid solution collecting box
It receives, and the metal ions such as nickel, chromium are then trapped concentration in waste liquid, to reach the recycling of first step acid solution and separation of metal ions
Purpose；
C, by concentration and separation collect after acid pickle in, metal ion nickel, chromium concentration, be stoste concentration of metal ions
Tens times, by using centrifugal electrolytic recovery technology, metal ion nickel, the waste liqouor in acid pickle are returned；
D, the acid pickle after electrolysis, which is entered by collecting pipe in the second integrated settling system, carries out pH value adjustment and freely sinks
Drop, wherein pH value is adjusted by sulfuric acid and sodium hydroxide, while polyacrylamide is added into the second integrated settling system
Amine and poly-aluminium, the product after sedimentation are discharged by sludge pump in sludge-tank, and the supernatant obtained after settling flows into supernatant certainly
In collecting box；
E, the supernatant in supernatant collection case passes sequentially through active carbon filter and second bag under the action of resin runs pump
Formula filter enters in resin adsorption system, and nickeliferous, chromium ion waste water enters resin adsorption system, for nickel, chromium ion into
Row absorption, after resin adsorption is saturated, resin desorbed solution is drained into electrolysis system, and electrolytic recovery again is carried out to metallic nickel, chromium,
Resin flushing liquor is drained into integrated settling system settlement treatment again, and resin adsorption system production water enters the concentration of next stage high pressure
System processing；
F, high pressure concentration systems produce the further advanced treating of water for resin system, will be with high salt in waste water by extraordinary RO membrane technologies
Ingredient is concentrated and separated, and concentration process is divided into two sections of progress；First segment operation can according to the salt difficulty height in waste water come
Adjust operating pressure；Water inlet of the first order concentrate as second segment concentration systems, second segment concentration systems permeate can basis
The reuse of effluent quality situation flows back into primary concentration system, and the supplement as primary concentration system is intake；It can not only improve
The rate of recovery of waste water can also reduce raw water quality concentration；The permeate of first order concentration systems can direct reuse in production work
Skill and membranous system water for cleaning；The highly enriched liquid of second segment concentration systems enters rear end evaporation and crystallization system；
G, vapo(u)rization system will contain concentrate with high salt by feed pump, concentrate is squeezed into evaporator and is evaporated, evaporation condensate
It collects, high pressure concentration systems front end is flowed back by reflux pump, be re-used as the water inlet of high pressure concentration systems, evaporate brilliant paddle liquid and be discharged into
Crystallizer, crystallization solid waste do the useless processing of prestige, and whole system is completed to clean stainless steel the zero discharge treatment of waste liquid.
2. a kind of stainless steel according to claim 1 wastewater zero discharge waste water unit equipment of cleaning containing acid, which is characterized in that
The sludge obtained after the filter press press filtration discharges into sludge concentration tank to be transported by external equipment.
3. a kind of stainless steel according to claim 1 wastewater zero discharge waste water unit equipment of cleaning containing acid, which is characterized in that
The acid pickle concentrated separation system is using resistance to peracid, high pollution, high anti-oxidation special separation film.
4. a kind of stainless steel according to claim 1 wastewater zero discharge waste water unit equipment of cleaning containing acid, which is characterized in that
After metal ion in the electrolytic recovery nickel, chromium system is by electrolytic recovery, the metal ion control in acid pickle is existed
100PPm or less.
5. a kind of stainless steel according to claim 1 wastewater zero discharge waste water unit equipment of cleaning containing acid, which is characterized in that
The poly-aluminium is also known as PAC, has height charge neutrality and bridge linking effect to water-borne glue body and particulate matter, and can strongly remove micro- toxic
Object and heavy metal ion.
6. a kind of stainless steel according to claim 1 wastewater zero discharge waste water unit equipment of cleaning containing acid, which is characterized in that
The polyacrylamide is also known as PAM, is a kind of common nonionic high polymer coagulant.
7. a kind of stainless steel according to claim 1 wastewater zero discharge waste water unit equipment of cleaning containing acid, which is characterized in that
The high pressure concentration systems use special type RO film concentration techniques.
8. a kind of stainless steel according to claim 1 wastewater zero discharge waste water unit equipment of cleaning containing acid, which is characterized in that
When first segment is run in the high pressure concentration systems, waste strength is in 30000PPM hereinafter, the selection of its operating pressure is in 30-50KG
Left and right；When second segment is run, the operating pressure of concentration systems is between 55-70KG.
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| CN112624483A (en) * | 2021-02-01 | 2021-04-09 | 广东海瑞环保科技有限公司 | Treatment system and treatment method for circuit board production spray tower wastewater |
| CN115504614A (en) * | 2022-09-21 | 2022-12-23 | 无锡宜奥龙环保设备有限公司 | Recycling device of waste chromium solution |
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