CN108033480A - Method for recycling copper in wastewater by using calcium carbonate - Google Patents
Method for recycling copper in wastewater by using calcium carbonate Download PDFInfo
- Publication number
- CN108033480A CN108033480A CN201711321137.7A CN201711321137A CN108033480A CN 108033480 A CN108033480 A CN 108033480A CN 201711321137 A CN201711321137 A CN 201711321137A CN 108033480 A CN108033480 A CN 108033480A
- Authority
- CN
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- Prior art keywords
- caco
- waste
- calcium carbonate
- powder
- copper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 50
- 239000010949 copper Substances 0.000 title claims abstract description 38
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000002351 wastewater Substances 0.000 title claims abstract description 13
- 238000004064 recycling Methods 0.000 title claims description 13
- 229910052802 copper Inorganic materials 0.000 title abstract description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title abstract description 12
- 238000001354 calcination Methods 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 238000011084 recovery Methods 0.000 claims abstract description 7
- PTVDYARBVCBHSL-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu] PTVDYARBVCBHSL-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000013049 sediment Substances 0.000 claims description 22
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 claims description 8
- 230000035484 reaction time Effects 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000002699 waste material Substances 0.000 abstract description 32
- 239000007788 liquid Substances 0.000 abstract description 25
- 239000000843 powder Substances 0.000 abstract description 15
- 239000002244 precipitate Substances 0.000 abstract description 13
- 238000001914 filtration Methods 0.000 abstract description 4
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 4
- 238000000975 co-precipitation Methods 0.000 abstract description 2
- 239000010786 composite waste Substances 0.000 abstract description 2
- 238000001035 drying Methods 0.000 abstract description 2
- 230000009977 dual effect Effects 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract description 2
- 239000010865 sewage Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 abstract 1
- 239000005751 Copper oxide Substances 0.000 abstract 1
- 229910000431 copper oxide Inorganic materials 0.000 abstract 1
- 238000009776 industrial production Methods 0.000 abstract 1
- 239000003973 paint Substances 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 11
- 239000000203 mixture Substances 0.000 description 9
- 238000005530 etching Methods 0.000 description 8
- 238000001556 precipitation Methods 0.000 description 8
- 238000002441 X-ray diffraction Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 229910052933 brochantite Inorganic materials 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 238000010183 spectrum analysis Methods 0.000 description 2
- 230000010148 water-pollination Effects 0.000 description 2
- 229910004247 CaCu Inorganic materials 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- ZIALXKMBHWELGF-UHFFFAOYSA-N [Na].[Cu] Chemical compound [Na].[Cu] ZIALXKMBHWELGF-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 229910000366 copper(II) sulfate Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000445 field-emission scanning electron microscopy Methods 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 pattern Substances 0.000 description 1
- 238000000717 platinum sputter deposition Methods 0.000 description 1
- 238000000634 powder X-ray diffraction Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G3/00—Compounds of copper
- C01G3/02—Oxides; Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G3/00—Compounds of copper
- C01G3/006—Compounds containing, besides copper, two or more other elements, with the exception of oxygen or hydrogen
-
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/62—Heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/02—Softening water by precipitation of the hardness
- C02F5/06—Softening water by precipitation of the hardness using calcium compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/80—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70
- C01P2002/85—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70 by XPS, EDX or EDAX data
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
Abstract
A method for recovering copper in waste water by using calcium carbonate relates toAnd calcium carbonate powder and composite waste thereof are used in the technical field of sewage treatment. At room temperature, using CaCO3Or its hydrophilic waste and Cu-containing2+Mixing the waste water, stirring for a period of time, standing to obtain a precipitate, filtering the precipitate, and drying or calcining to obtain the copper hydrate or the copper oxide. In the recovery process, CaCO3CaCO capable of being selected for industrial production3Powder, CaCO3The hydrophilic waste can be selected from paper scraps, paint, etc. The invention uses CaCO3Powder or containing CaCO3The waste is cheap raw material, Cu in the waste liquid is obtained by room temperature coprecipitation method2+、Ca2+And SO4 2‑The plasma is completely precipitated, so that the dual effects of heavy metal removal and water softening are realized, and a new way is provided for heavy metal removal and recovery.
Description
Technical field
The present invention relates to calcium carbonate powder and its composite wastes to be used for technical field of sewage, and in particular to Yi Zhongli
With the method for calcium carbonate recycling Cu in waste water.
Background technology
Circuit board after etching, contains substantial amounts of copper in etching solution, these copper have very high recovery value.It is reported that
Etching waste liquor processing is mostly using electrolysis, oxidation-reduction method, with neutralization oxidation-precipitation method of alkali neutralization acid waste liquid etc..Printing
For circuitboard etching waste liquid after reclaiming metals copper, salinity is big, acidity is high, and certain density metallic copper is still suffered from after recycling
Ion.Salinity is mainly manifested in greatly SO4 2-Excessive concentration, can produce suppression and toxic action, so as to seriously affect life to microorganism
The clean-up effect of thing processing system.Contain Cu in acidic etching waste liquid2+, H+, CuSO4 2-And SO4 2-Or CuCl4 2-And Cl-Deng.
CaCO3It is abundant raw material, cheap, it is widely used in the production such as rubber, papermaking and coating.However, will
CaCO3Report is had no in terms of directly applying to heavy metals removal and recycling.
The present invention removes the copper in waste water using calcium carbonate powder and its compound first, solves what electrolysis was left
Salinity problems.The method have cost is low, environmental-friendly, method is simple, be conducive to large-scale promotion.
The content of the invention
The present invention is directed to the shortcoming in the presence of the prior art, there is provided a kind of technique is simple, cost is low, is adapted to industry
Change the method that the large capacity of application removes and recycles Cu in waste water.
To achieve these goals, the technical solution adopted in the present invention is：One kind utilizes calcium carbonate recycling Cu in waste water
Method, under room temperature, using CaCO3Or its hydrophily discarded object is with containing Cu2+Waste water mixes, and is stood after stirring a period of time
Sediment is obtained, copper hydrate or Cu oxide can be obtained by filtering out sediment and being dried or calcine.
In recovery method, CaCO3Industrial CaCO may be selected3Powder, CaCO3Paper scrap may be selected in hydrophily discarded object
Or coating etc..CaCO3Or the usage amount of its discarded object and Cu in pending waste liquid2+Concentration have relation, can use excessive
Use, to remove the Cu in waste liquid completely2+Ion, under normal circumstances, may be selected CaCO3With Cu2+Molar ratio be more than 1:2, example
Such as 1:1、2:1 etc..
Precipitate Cu in waste liquid2+The speed of copper ion and waste liquid acid-base property, CaCO3Powder granularity size and surface-active etc.
Factor is related, Nano-meter CaCO33Or porous C aCO3Powder and Cu2+Settling rate is very fast.The chemical composition of reaction precipitate and reaction
There is relation in time, and the component of the sediment obtained after abundant reaction is mainly made of elements such as Cu, Ca, O, S and H.General feelings
Under condition, reaction temperature is room temperature, and the stirring reaction time is 6~24h.
Sediment can dry or calcination processing, according to depending on actual conditions.Sediment calcining heat is about 600
~800 DEG C, calcination time is 1~5h.A small amount of sulfuric acid and hydrochloric acid aerosol can use hydroxide caused by calcining recycling precipitate copper
Sodium solution absorbs, and will not produce pollution.
Compared with prior art, the present invention has the following advantages：
1), the present invention is with CaCO3Powder or containing CaCO3Discarded object is cheap raw material, by room temperature coprecipitation by waste liquid
Cu2+、Ca2+And SO4 2-Plasma precipitates completely, realizes heavy metal removing and water body softens dual efficiency, for a huge sum of money
Belong to removing and recycling provides a kind of new approach.
2), Cu in removing of the invention and Recycling of waste liquid2+Technological process it is simple, low without expensive equipment, cost, be adapted to
Such as the scale processing of the waste water such as copper facing industrial discharge.
Brief description of the drawings
Fig. 1 is CaCO3(upper left corner illustration is sediment color to relation curve in dosage and waste liquid between precipitation capacity, right
The color of waste liquid after inferior horn illustration precipitates for filtering).
Fig. 2 is the XRD spectra for the sediment that embodiment 1~3 obtains (a, b, c correspond to embodiment 1-3 respectively).
Fig. 3 is the precipitate morphology (a) and composition analysis figure (b) that embodiment 1 obtains.
Fig. 4 is the precipitate morphology (c) and composition analysis figure (d) that embodiment 2 obtains.
Fig. 5 is precipitate morphology (e), composition analysis and the EDS energy spectrum diagrams (f) that embodiment 3 obtains.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
The phase structure of the method for the present invention gained sediment, pattern, chemical composition using X-ray powder diffraction (XRD,
D3500) characterize and analyze with field emission scanning electron microscope (FE-SEM, SU8010).
First, the influence recycled by the additive amount tested to confirm calcium carbonate to copper in waste liquid
With the CaCO of industrialized production3Powder is raw material, will not homogeneity using wiring board copper-containing etching waste solution as recycle object
Measure the CaCO of (0.2g, 0.5g, 0.8g)3Powder respectively with the wiring board copper-containing etching waste solution of 200mL (Cu in waste liquid2+About
0.02mol/L) mix, stir same time, then filter out precipitation, weight is measured after drying.
Fig. 1 is CaCO3(upper left corner illustration is sediment color to relation curve in dosage and waste liquid between precipitation capacity, right
The color of waste liquid after inferior horn illustration precipitates for filtering).As seen in Figure 1, with CaCO3The increase of usage amount, containing Cu2+It is heavy
Starch quality linearly increases.It can be seen that by lower right corner illustration than untreated waste liquid a, from b (CaCO3Powder additive amount
For 0.2g) to d (CaCO3Powder additive amount is 0.8g), with CaCO3The increase of usage amount, the color of waste liquid progressively shoal.
It follows that as Cu in waste liquid2+The timing of ion concentration one, by regulating and controlling CaCO3Usage amount, may finally realize
Cu in waste liquid2+Relatively completely precipitation, so as to reach Cu in effective Recycling of waste liquid2+Purpose.
Secondly, verify that the different stirring reaction time obtain the influence of product to recycling by embodiment 1~3
The step of embodiment 1~3, is identical, and additive amount is also identical, is by the CaCO of 0.2g industrialized productions3
The wiring board copper-containing etching waste solution of powder and 200mL (Cu in waste liquid2+About 0.02mol/L) mixing, 6h (embodiments are stirred respectively
1), 12h (embodiment 2), 24h (embodiment 3), then filter out precipitation, 2h are calcined at 800 DEG C, then product is divided
Analysis.
Fig. 3~5 represent the precipitate morphology and chemical composition analysis obtained under the different stirring reaction time.Can be with by Fig. 3 a
Find out, sediment when reaction 6 is small is some flower-shaped constituents, mainly (Fig. 3 b) is formed by Cu, S and O, with reference to Fig. 2 to the production
The XRD analysis result (a) of thing understands that sediment when reaction 6 is small is mainly Cu4SO4(OH)6Thing phase.
From Fig. 4 c, sediment when reaction 12 is small is by the bigger club of some major diameters, mainly by Ca, S and O
Form (Fig. 4 d), the sediment, which is by CaSO, to be understood to the XRD analysis result (b) of the product with reference to Fig. 24.2H2O is formed.
From Fig. 5 e, sediment when reaction 24 is small is mainly made of many sheets, and energy is carried out to single particle
Spectrum analysis (Fig. 5 f) understands, the chemical composition of tablet be mainly made of Cu, S, O and Ca element (in energy spectrum analysis also there are Pt,
Si elements, reason are：Silicon is the substrate of test；It is used to increase sample electric conductivity by Pt sputterings, makes shooting photo more clear
It is clear), with reference to Fig. 2 to the XRD analysis result (c) of the product it is believed that after when reaction 24 is small, sediment has turned to
CaCu4(SO4)(OH)6.3H2O thing phases.
CaCO3With the Cu in waste liquid2+Reaction can be divided into 3 stages, and the key component of each stage precipitation thing is different.First
The key component of stage precipitation thing is Cu4SO4(OH)6, it is by some bar-shaped Cu4SO4(OH)6The flower-shaped thing formed；Second-order
The key component of section sediment is bar-shaped CaSO4.2H2O；The main composition of phase III sediment is the CaCu of sheet4
(SO4)(OH)6.3H2O。
Finally, CaCO3Recycle Cu in waste water2+Exploration of Mechanism
In order to explore CaCO3To Cu in waste liquid2+The reaction mechanism of recycling, by obtaining sediment under the differential responses time
XRD analysis (Fig. 2) are as can be seen that certain density Cu2+Enough CaCO are added in waste liquid3After powder, the Cu in solution2+Will be complete
Portion is co-precipitated, and final sediment is CaCu4(SO4)(OH)6.3H2O.Precipitate C u2+The whole process of ion can be used
Equation (1)~(3) represent；Finally, CuO products can be obtained by calcining sediment, as equation (4) represents.
Above content is only to design example and explanation of the invention, affiliated those skilled in the art
Various modifications or additions are done to described specific embodiment or are substituted in a similar way, without departing from invention
Design or surmount scope defined in the claims, be within the scope of protection of the invention.
Claims (4)
- A kind of 1. method using calcium carbonate recycling Cu in waste water, it is characterised in that under room temperature, using CaCO3Or its is hydrophilic Property discarded object and contain Cu2+Waste water mix, stir a period of time after stand obtain sediment, filter out sediment and be dried or Calcining can obtain copper hydrate or Cu oxide.
- 2. recovery method as claimed in claim 1, it is characterised in that CaCO3Hydrophily discarded object is paper scrap or coating.
- 3. recovery method as claimed in claim 1, it is characterised in that the stirring reaction time is 6~24h.
- 4. recovery method as claimed in claim 1, it is characterised in that calcining heat is 600~800 DEG C, calcination time for 1~ 5h。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711321137.7A CN108033480A (en) | 2017-12-12 | 2017-12-12 | Method for recycling copper in wastewater by using calcium carbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711321137.7A CN108033480A (en) | 2017-12-12 | 2017-12-12 | Method for recycling copper in wastewater by using calcium carbonate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108033480A true CN108033480A (en) | 2018-05-15 |
Family
ID=62102194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711321137.7A Pending CN108033480A (en) | 2017-12-12 | 2017-12-12 | Method for recycling copper in wastewater by using calcium carbonate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108033480A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112851023A (en) * | 2021-01-05 | 2021-05-28 | 深圳市洛浩环保科技有限公司 | Resource treatment method of copper micro-etching waste liquid |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792860A (en) * | 2005-11-17 | 2006-06-28 | 常州市裕和金属材料有限公司 | High-efficient environment treating method for acidic etching waste liquid |
| CN103408164A (en) * | 2013-09-01 | 2013-11-27 | 深圳市危险废物处理站有限公司 | Recycling method of electroplating wastewater containing copper nitrate |
| CN104003556A (en) * | 2014-06-12 | 2014-08-27 | 苏州经贸职业技术学院 | Method for treating heavy metal sewage |
| CN107213872A (en) * | 2017-07-20 | 2017-09-29 | 浙江农林大学 | A kind of preparation method of the hydro-thermal biomass carbon material of efficient absorption copper ion load calcium carbonate |
-
2017
- 2017-12-12 CN CN201711321137.7A patent/CN108033480A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792860A (en) * | 2005-11-17 | 2006-06-28 | 常州市裕和金属材料有限公司 | High-efficient environment treating method for acidic etching waste liquid |
| CN103408164A (en) * | 2013-09-01 | 2013-11-27 | 深圳市危险废物处理站有限公司 | Recycling method of electroplating wastewater containing copper nitrate |
| CN104003556A (en) * | 2014-06-12 | 2014-08-27 | 苏州经贸职业技术学院 | Method for treating heavy metal sewage |
| CN107213872A (en) * | 2017-07-20 | 2017-09-29 | 浙江农林大学 | A kind of preparation method of the hydro-thermal biomass carbon material of efficient absorption copper ion load calcium carbonate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112851023A (en) * | 2021-01-05 | 2021-05-28 | 深圳市洛浩环保科技有限公司 | Resource treatment method of copper micro-etching waste liquid |
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