CN107055898A - A kind of chromate waste water processing and recovery process - Google Patents
A kind of chromate waste water processing and recovery process Download PDFInfo
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- CN107055898A CN107055898A CN201710018689.4A CN201710018689A CN107055898A CN 107055898 A CN107055898 A CN 107055898A CN 201710018689 A CN201710018689 A CN 201710018689A CN 107055898 A CN107055898 A CN 107055898A
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- 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
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- 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
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- 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
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- 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
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- 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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
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- 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
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- 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
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- 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
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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- 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
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
Handled the present invention relates to a kind of chromate waste water and recovery process, including pretreatment, the removal of low price ion and the PH of chromate waste water are adjusted, Cr6+The adsorption recovery of ion, the part of chrome liquor evaporative crystallization 4.The present invention uses novel ion exchange process to propose a kind of circulation process method for waste electroplating liquor containing chromium, and the technique for developing a set of online recycling chromium from chromate waste water, pollution of the electroplating wastewater to environment is not only reduced, and realizes the recycling of chromium, the consumption of resource is reduced.
Description
Technical field
The present invention relates to a kind of field of waste water treatment, and in particular to the processing of waste electroplating liquor containing chromium and recovery process.
Background technology
With the propulsion of process of industrialization, to meet the anti-corrosion to metal, conduction, demand, domestic electricity wear-resisting and attractive in appearance etc.
Industry is plated to flourish, but the country administers electroplating wastewater, the disposal ability of the especially chromate waste water larger to toxicity is serious
Deficiency, adds, waste electroplating liquor containing chromium infiltration soil, current inadequate to the protective awareness of environment, serious harm is caused to environment；
The discharge of substantial amounts of chromate waste water, also results in the waste of chromium resource, causes certain economic loss simultaneously.
In chrome-plated process, cleaning water, the waste for taking chromic acid out of typically plate Cr6+Real utilization rate less than
40%, the loss of oxidized portion only accounts for 1-2% or so, overwhelming majority washing and taken away, and not only wastes huge, processing procedure also has
Substantial amounts of medicament (reducing agent, alkali, sedimentation agent etc.) is consumed, while producing the problem that substantial amounts of sludge is also reprocessing.Due to chromium
Mainly with Cr6+Form be present in waste water, and with very strong strong oxidizing property, usual reducing process and electrolysis are to chromate waste water
Handled.Current Cr6+Chrome waste water processing technique it is very ripe, sewage treatment equipment typically by chemical reaction container, mixer,
Chemicals dosing plant etc. is constituted, and most of enterprise uses chemical reduction method by Cr6+It is reduced into Cr3+, pH is then adjusted to weak base
Property, make deliquescent Cr3+Insoluble chromium hydroxide precipitation thing is converted into, waste water obtains removing purification.Although this method can be with
Remove Cr6+, but produce substantial amounts of Cr3+, still there is certain harm to environment, and could not reach maximum resource utilization, do not have
There is production superiority.
In line with the production theory of environmental protection and saving, this technique is exchanged using novel ion and evaporating concentrating method can be isolated
Cr6+, and evaporative crystallization recycling is carried out, on the basis of chromate waste water processing, the chromium in further reuse waste water can be realized
Resource reutilization；While environmental pollution is reduced, production cost is substantially reduced, in production with very high operability.
The content of the invention
A kind of processing method and recovery process that propose waste electroplating liquor containing chromium of the present invention, passes through unique technological design
And layout, the circulation technology system of closed type is formed, and effectively waste electroplating liquor containing chromium is carried out using novel ion exchange process
Handle and to Cr6+Recycle, the technique comprises the following steps：
Chromate waste water is promoted to activated-charcoal column by pump, passes through the organic impurities in Adsorption waste water；
The waste water of organics removal impurity is flowed into bag filter and filter out mechanical admixture, to complete organic colloid and particle
The removal of thing, completes the pretreatment of waste water；
Pretreated waste water is flowed into cationic ion-exchange resin (acid adjustment post), remove the nickel that there is cleaning process to be brought into or
The metal ions such as copper, and plating Cr6+The Cr that cleaning process is oxidized to afterwards3+Heavy metal ion etc., completion is gone to low price ion
Remove and pH value to waste water adjustment；
Make the waste water after adjustment pH value enter resin anion (R.A.) (inhale chromium post), and adjust the pH value of waste water to make six in waste water
Valency chromium ion is converted into HCrO4 -Ion, and then with Cr2O7 2-Form is adsorbed on negative resin, is completed to Cr6+Adsorption recovery；And
Remaining waste liquid after inhaling the processing of chromium post is passed through resin catcher and carries out pure water recovery, can be passed through cleaning sink and repeat profit
With；
There is Cr using sodium hydroxide solution Dissociative adsorption6+Resin anion (R.A.), obtained chrome liquor is partially by removing sodium system
Electrodeposited chromium line coating bath is flowed into after system, the reuse to chromium is realized；
Unnecessary chrome liquor is removed into acid ion processing, through bag filter impurity screening, Cr is passed through3+Absorption tower removal of impurities and
PH value is adjusted.
Chrome liquor after removal of impurities and pH value adjustment is passed through reactive crystallization kettle, evaporative crystallization becomes to store after chromium is dry, final complete
The recovery of paired chromium.
Further, the acid adjustment post is 2 " set the using and the reserved formulas ", and this is designed using the flexible method of operation, can be according to useless
The concentration of water intermediate ion adjusts the method for operation of water inlet at any time, can be using the operation of wall scroll post or series system operation：When the 1st set of sun
Ionic adsorption system (acid adjustment post) saturation, is switched to the 2nd set of Cation adsorption system (acid adjustment post) and takes over operation, the 1st set of system
Parsing and regeneration out of service.During the parsing out of service of the 1st set of system, (the Cr in desorbed solution3+、Fe3+、Cu2+、Ca2+、Mg2+、
Na+) a set ofization sedimenting system is discharged to, settled by dosing, supernatant removes oil dewaxing water, sedimentation available for pretreating process
Mud by doing fixed-end forces after filter press.
Further, the chemical expression during acid adjustment post work is：
A++HR→RA+H+
Wherein, with A+The cations such as chromium, copper, nickel are represented, HR represents the cation resin in acid adjustment post.
Further, the chemical expression of the regeneration technology of the acid adjustment post is:
RA+HCL→2RH+ACL
Further, the suction chromium post is " 3 set two with one for formula ", and its structure is " monoyang with double yin " formula.Chromium post A is inhaled with inhaling
Chromium post B runs for tandem, with reference to chromium post C is inhaled, can select the method for operation according to water situation：
The first method of operation, when the first order inhales chromium post A Cr6+When leakage reaches 0.5mg/L, then chromium post is inhaled in the second level of connecting
B, until inhaling chromium post B reaches Cr6+Full saturation, and regenerated from except chromium system is broken；Now inhale chromium post B and become the first order
Connect and continue to run with suction chromium post C.
Second of method of operation, inhales chromium post A+ and inhales chromium post B series operations, contains Cr when inhaling chromium post B6+When water outlet reaches 0.5mg/L,
Suction chromium post A has completed the release operation of over-saturation adsorption process and has been parsed and regenerated, and chromium post C series operations are inhaled by suction chromium post B+；
Contain Cr when inhaling chromium post C6+When water outlet reaches 0.5mg/L, inhale chromium post C and connected with the suction chromium post A after parsing, so go round and begin again operation.
Further, chemical expression is during the suction sodium post work：
B-+ROH→RB+OH-
2ROH+Cr2O7 2-→R2Cr2O7+2OH-
2ROH+CrO4 2-→R2CrO4+2OH-
Wherein, with B-Represent SO4 2-、CL-、NO3 -Deng anion, ROH, which represents to inhale, contains resin anion (R.A.) in sodium post.
Further, the chemical expression of the regeneration technology for inhaling chromium post is：
RB+NaOH→ROH+NaB
R2CrO4+2NaOH→2ROH+Na2CrO4
Further, the chemical expression during work of the removing sodium system is：
Na CrO4+ 2RH=2RNa+H CrO4
Further, it is barium carbonate that chrome liquor, which removes additive in acid ion handling process, and chrome liquor can be made to generate barium sulfate
Sedimentation, refilters removal, and its reaction expression formula is：
H2SO4+BaCO3=BaSO4↓+CO2+H2O
The Method for Accurate Calculation of the barium carbonate amount of addition is：The content of the sulfate ion of chromic acid liquor is detected first, often
Sedimentation 1g sulfate ions need to add 2g barium carbonates, stir barium carbonate solution during sedimentation while add, be sufficiently stirred for 13-
Stop stirring after 15 minutes；Solution stand was parked after 24 hours again, filtered with PP bag filters, retention filters out barium sulfate.
Compared with prior art and technique, the invention has the advantages that：
(1) except the key equipment (ion exchange column) of chromium is using concurrent-countercurrent alternating regeneration technology in system, with revival
The excellent feature such as really good, regenerating agent consumption is low, easy to operate and effluent quality is good.The waste water produced to chromium plating cleaning, completely
" water ", " Cr can be achieved6+" closed type recycling, it is truly realized energy-conservation, zero-emission, environmental protection.
(2) chromium ion concentration height, more than 2 times recyclings repeatable to diluter desorbed solution are reclaimed, makes chromium in recovered liquid
Ion concentration reaches more high state.
(3) system design unique structure is the full saturation system of twin columns, you can isolated operation, also can be dense according to waste water intermediate ion
Spend series operation.
(4) it is that the present invention changes parsing and set using compared with ejector negative pressure self-suction with traditional parsing regeneration
Standby structure is a whole set of core technology reclaimed, the efficiency with higher use flexibility and Geng Gao.For example, acid adjustment in this technique
Column system every 20 days or so is just parsed once, and parsing liquid measure is few, and any reducing agent need not be added again, not only reduces subsequently setting
Standby investment, while decreasing the treating capacity of dosing, waste water, i.e. operating cost is saved in environmental protection again.
(5) reactor crystal system use negative pressure low temperature crystallization technology, required heat source temperature be 75-85 DEG C between,
Using workpiece drying oven waste heat, reactor is transferred heat to by heat exchanger, that is, reduces investment outlay and makes full use of the energy.
(6) a whole set of recovery system can save the 45-50% dry expense expenditure of chromium for enterprise, while the substantial amounts of water saved again
Take, medicament expense use, the Treatment of Sludge expense of subsequent treatment etc..
(7) the device structure part for replacing ejector using flowmeter is transformed, the parsing recovered liquid of its not only direct relation
Concentration, resin parsing recover whether thoroughly and operation when can cause the loss of water soda acid.
Brief description of the drawings
In order to allow the above objects, features and advantages of the present invention to be easier to understand, below in conjunction with tool of the accompanying drawing to the present invention
Body embodiment elaborates.
Fig. 1 show the processing method and recovery process flow chart of waste electroplating liquor containing chromium.
Embodiment
The embodiment of the present invention is described in further detail below in conjunction with accompanying drawing.
The 0-500mg/L containing chromium discharged for industrial electroplating technology waste water is handled, and the major pollutants of waste water are
Chromium (Cr6+), the pH value of waste water is 3-6, as described in Figure 1, the processing method and recovery process of a kind of waste electroplating liquor containing chromium, and it is handled
Method is as follows：
(1) chromate waste water flowed out electrodeposited chromium line is promoted to activated-charcoal column by pump, by Adsorption waste water
Organic impurities；
(2) make organics removal impurity waste water flow into bag filter filter out mechanical admixture, come complete organic colloid and
The removal of particulate matter, completes the pretreatment of waste water；
(3) pretreated waste water is made to flow into " 2 sets of the using and the reserved formulas " cationic ion-exchange resin (acid adjustment post), acid adjustment post system
System, when the 1st set of Cation adsorption system (acid adjustment post) saturation, is switched to the 2nd set of Cation adsorption system using series system operation
System (acid adjustment post) takes over operation, the 1st set of system parsing out of service.Removed by the step have nickel that cleaning process brought into or
The metal ions such as copper, and plating Cr6+The Cr that cleaning process is oxidized to afterwards3+Heavy metal ion etc., completion is gone to low price ion
Remove and waste water pH value adjustment；
During the parsing out of service of (4) the 1st sets of systems, (the Cr in desorbed solution3+、Fe3+、Cu2+、Ca2+、Mg2+、Na+) it is discharged to one
Setization sedimenting system, is settled by dosing, and supernatant removes oil dewaxing water available for pretreating process, and the mud of sedimentation passes through
Fixed-end forces are done after filter press；
(5) waste water after adjustment pH value is made to enter " 3 set two with one for formula " resin anion (R.A.) (inhaling chromium post), its structure is
" monoyang with double yin " formula.In wastewater treatment process, chromium post A+ will be inhaled and inhale chromium post B series operations, contain Cr when inhaling chromium post B6+Water outlet reaches
During 0.5mg/L, suction chromium post A has completed the release operation of over-saturation adsorption process and parsed, and chromium post C series connection fortune is inhaled by suction chromium post B+
OK；Contain Cr when inhaling chromium post C6+When water outlet reaches 0.5mg/L, inhale chromium post C and connected with the suction chromium post A after parsing, fortune of so going round and beginning again
OK；
So as to which the pH value for adjusting waste water makes the hexavalent chromium in waste water be converted into HCrO4- ion, and then with Cr2O7 2-Shape
Formula is adsorbed on negative resin, is completed to Cr6+The adsorption recovery of ion；And the remaining waste liquid after inhaling chromium post C processing is passed through tree
Fat catcher carries out pure water recovery, and the mg/L of water outlet content of chromium ion≤0.1 can be passed through cleaning sink recycling, processing effect
It is really as shown in the table：
| Species | Plating cleans waste water containing chromium |
| Water quality index | Chromium (Cr6+) concentration |
| Influent quality | 0-500mg/L |
| Effluent quality | ≤0.1mg/L |
(6) there is Cr using sodium hydroxide solution Dissociative adsorption6+Resin anion (R.A.), obtained chrome liquor is partially by removing sodium
Electrodeposited chromium line coating bath is flowed into after system, the reuse to chromium is realized.
(7) unnecessary chrome liquor is passed through chromic acid liquor collecting box, and detects the content of the sulfate ion of chromic acid liquor, then
Added according to the amount that every sedimentation 1g sulfate ions need to add 2g barium carbonates, barium carbonate solution is stirred while add, filled
Stop stirring after dividing stirring 15 minutes；Solution stand was parked after 24 hours again, filtered with PP bag filters, retention filters out sulphur
Sour barium, is then passed through Cr by filtered fluid3+Absorption tower removal of impurities and pH value adjustment.
(8) chrome liquor after removal of impurities and PH adjustment is passed through reactive crystallization kettle, reactive crystallization kettle is remaining using workpiece drying oven
Heat is heated, and temperature is 75-85 DEG C, and chrome liquor evaporative crystallization becomes to store after chromium is dry, is finally completed the recovery to chromium.
, can effective going organic matter and heavy metal ion using novel ion exchange process system processing waste water containing chrome
Remove, system water outlet conductivity is between 2-10us/cmm scopes, content of chromium ion≤0.1mg/L complies fully with and met this section
The cleaning water quality requirement of chromium plating cleaning, the production water after ion exchange is returned directly to rinse bath, completes whole system
Closed-loop path；The waste water handled simultaneously by removing sodium, which can be passed through electrodeposited chromium line coating bath reuse or further be evaporated crystallization, to be deposited
Recycling is stored up, the system accomplishes the standard that water is reclaimed completely with metal substantially.
Although an embodiment of the present invention has been shown and described, so it is not limited to the present invention, the skill of the industry
Art personnel are not it should be appreciated that the present invention is limited by above-mentioned implementation pin, without departing from the principles and spirit of the present invention
These embodiments can be carried out with a variety of change, modification, replacement and modification, these change, modification, replacement and modification are both fallen within will
Ask in the scope of the invention of protection, the scope of protection of present invention is limited by appended claims and its equivalent.
Claims (4)
1. a kind of waste electroplating liquor containing chromium processing and recovery process, it is characterised in that chromate waste water processing and time of chromium can be carried out
Receive, the technique comprises the following steps：
Chromate waste water is promoted to activated-charcoal column by pump, passes through the organic impurities in Adsorption waste water；
The waste water of organics removal impurity is flowed into bag filter and filter out mechanical admixture, to complete organic colloid and particulate matter
Remove, complete the pretreatment of waste water；
Pretreated waste water is flowed into cationic ion-exchange resin (acid adjustment post), remove the nickel for thering is cleaning process to be brought into or copper etc.
Metal ion, and plating Cr6+The Cr that cleaning process is oxidized to afterwards3+Heavy metal ion etc., complete to the removal of low price ion and
Adjustment to the pH value of waste water；
Make the waste water after adjustment pH value enter resin anion (R.A.) (inhale chromium post), and adjust the pH value of waste water to make the Cr VI in waste water
Ion conversion is HCrO4 -Ion, and then with Cr2O7 2-Form is adsorbed on negative resin, is completed to Cr6+Adsorption recovery；
There is Cr using sodium hydroxide solution Dissociative adsorption6+Resin anion (R.A.), after obtained chrome liquor is partially by removing sodium system
Electrodeposited chromium line coating bath is flowed into, the reuse to chromium is realized；
Unnecessary chrome liquor is removed into acid ion processing, through bag filter impurity screening, Cr is passed through3+Absorption tower removal of impurities and pH value
Adjustment.
Chrome liquor after removal of impurities and pH value adjustment is passed through reactive crystallization kettle, evaporative crystallization becomes to store after chromium is dry, be finally completed pair
The recovery of chromium.
2. the recovery process of waste electroplating liquor containing chromium as claimed in claim 1, it is characterised in that the acid adjustment post is " 2 set of one use
One for formula ", the system is designed using the flexible method of operation, can adjust the operation side of water inlet at any time according to the concentration of waste water intermediate ion
Formula, is run using the operation of wall scroll post or series system：When the 1st set of Cation adsorption system (acid adjustment post) saturation, the 2nd set is switched to
Cation adsorption system (acid adjustment post) takes over operation, the 1st set of system parsing out of service.
3. the recovery process of waste electroplating liquor containing chromium as claimed in claim 1, it is characterised in that the suction chromium post is " 3 set of two use
One for formula ", its structure is " monoyang with double yin " formula.Inhale chromium post A and run with inhaling chromium post B for tandem, with reference to suction chromium post C, Ke Yigen
The method of operation is selected according to water situation：
The first method of operation, when the first order inhales chromium post A Cr6+When leakage reaches 0.5mg/L, then chromium post B is inhaled in the second level of connecting, directly
Cr is reached to chromium post B is inhaled6+Full saturation, and regenerated from except chromium system is broken, now inhale chromium post B and become the first order and suction
Chromium post C series connection is continued to run with.
Second of method of operation, inhales chromium post A+ and inhales chromium post B series operations, contains Cr when inhaling chromium post B6+When water outlet reaches 0.5mg/L, chromium is inhaled
Post A has completed the release operation of over-saturation adsorption process and parsed, and chromium post C series operations are inhaled by suction chromium post B+；Contain when inhaling chromium post C
Cr6+When water outlet reaches 0.5mg/L, inhale chromium post C and connected with the suction chromium post A after parsing, so go round and begin again operation.
4. the recovery process of waste electroplating liquor containing chromium as claimed in claim 1, it is characterised in that chrome liquor removes acid ion processing
For addition barium carbonate, it is generated barium sulfate sedimentation, refilter removal；The Method for Accurate Calculation of the barium carbonate amount of addition is as follows：
The content of the sulfate ion of chromic acid liquor is detected first；Often sedimentation 1g sulfate ions need to add 2g barium carbonates；Sedimentation
When barium carbonate solution is stirred while add, be sufficiently stirred for after 13-15 minutes stopping stirring；Solution stand is parked 24 again
After hour, filtered with PP bag filters, retention filters out barium sulfate.
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| CN201710018689.4A CN107055898A (en) | 2017-01-11 | 2017-01-11 | A kind of chromate waste water processing and recovery process |
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| CN201710018689.4A CN107055898A (en) | 2017-01-11 | 2017-01-11 | A kind of chromate waste water processing and recovery process |
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| CN201710018689.4A Pending CN107055898A (en) | 2017-01-11 | 2017-01-11 | A kind of chromate waste water processing and recovery process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108793568A (en) * | 2018-08-29 | 2018-11-13 | 广州奥科达水处理设备有限公司 | A kind of stainless steel cleaning containing acid wastewater zero discharge waste water unit equipment |
| 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 |
| CN115571948A (en) * | 2022-10-09 | 2023-01-06 | 泉州中节能水处理科技有限公司 | Method for treating and recycling electroplating chromium-containing wastewater through ion exchange |
| CN115677090A (en) * | 2022-10-09 | 2023-02-03 | 泉州中节能水处理科技有限公司 | Method for recycling electroplating chromium-containing wastewater |
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| CN101746906A (en) * | 2008-12-03 | 2010-06-23 | 五邑大学 | Method for processing electroplating wastewater with heavy metal ions |
| CN103255466A (en) * | 2013-05-23 | 2013-08-21 | 中山中粤马口铁工业有限公司 | Online recycling and reusing device and method for chromate-containing wastewater of chrome-plated thin steel plates |
| CN104909508A (en) * | 2015-06-08 | 2015-09-16 | 佛山市新泰隆环保设备制造有限公司 | Electroplating chromium-containing wastewater treatment method and device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101746906A (en) * | 2008-12-03 | 2010-06-23 | 五邑大学 | Method for processing electroplating wastewater with heavy metal ions |
| CN103255466A (en) * | 2013-05-23 | 2013-08-21 | 中山中粤马口铁工业有限公司 | Online recycling and reusing device and method for chromate-containing wastewater of chrome-plated thin steel plates |
| CN104909508A (en) * | 2015-06-08 | 2015-09-16 | 佛山市新泰隆环保设备制造有限公司 | Electroplating chromium-containing wastewater treatment method and device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108793568A (en) * | 2018-08-29 | 2018-11-13 | 广州奥科达水处理设备有限公司 | A kind of stainless steel cleaning containing acid wastewater zero discharge waste water unit equipment |
| 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 |
| CN115571948A (en) * | 2022-10-09 | 2023-01-06 | 泉州中节能水处理科技有限公司 | Method for treating and recycling electroplating chromium-containing wastewater through ion exchange |
| CN115677090A (en) * | 2022-10-09 | 2023-02-03 | 泉州中节能水处理科技有限公司 | Method for recycling electroplating chromium-containing wastewater |
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Application publication date: 20170818 |