CN105565559B - A kind of technology for removing mercury in acidic high-strength mercury-containing waste water - Google Patents
A kind of technology for removing mercury in acidic high-strength mercury-containing waste water Download PDFInfo
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- CN105565559B CN105565559B CN201610028334.9A CN201610028334A CN105565559B CN 105565559 B CN105565559 B CN 105565559B CN 201610028334 A CN201610028334 A CN 201610028334A CN 105565559 B CN105565559 B CN 105565559B
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- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 229910052753 mercury Inorganic materials 0.000 title claims abstract description 63
- 239000002351 wastewater Substances 0.000 title claims abstract description 44
- 230000002378 acidificating effect Effects 0.000 title claims abstract description 8
- 238000005516 engineering process Methods 0.000 title description 6
- 238000006722 reduction reaction Methods 0.000 claims abstract description 22
- 239000002253 acid Substances 0.000 claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 17
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- PUKLDDOGISCFCP-JSQCKWNTSA-N 21-Deoxycortisone Chemical compound C1CC2=CC(=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@@](C(=O)C)(O)[C@@]1(C)CC2=O PUKLDDOGISCFCP-JSQCKWNTSA-N 0.000 claims abstract description 14
- FCYKAQOGGFGCMD-UHFFFAOYSA-N Fulvic acid Natural products O1C2=CC(O)=C(O)C(C(O)=O)=C2C(=O)C2=C1CC(C)(O)OC2 FCYKAQOGGFGCMD-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002509 fulvic acid Substances 0.000 claims abstract description 14
- 229940095100 fulvic acid Drugs 0.000 claims abstract description 14
- 238000011084 recovery Methods 0.000 claims abstract description 14
- 238000012545 processing Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 239000007787 solid Substances 0.000 claims abstract description 11
- 239000011780 sodium chloride Substances 0.000 claims abstract description 8
- 238000000926 separation method Methods 0.000 claims abstract description 7
- 239000006228 supernatant Substances 0.000 claims abstract description 7
- 238000013019 agitation Methods 0.000 claims abstract description 6
- 230000035699 permeability Effects 0.000 claims abstract description 5
- 238000006552 photochemical reaction Methods 0.000 claims abstract description 3
- 238000002156 mixing Methods 0.000 claims description 7
- 241000370738 Chlorion Species 0.000 claims description 5
- 238000007540 photo-reduction reaction Methods 0.000 claims description 4
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 229940100892 mercury compound Drugs 0.000 claims 1
- 150000002731 mercury compounds Chemical class 0.000 claims 1
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical compound Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 5
- BQPIGGFYSBELGY-UHFFFAOYSA-N mercury(2+) Chemical compound [Hg+2] BQPIGGFYSBELGY-UHFFFAOYSA-N 0.000 description 5
- 239000003513 alkali Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 239000000701 coagulant Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 239000003504 photosensitizing agent Substances 0.000 description 2
- 230000027756 respiratory electron transport chain Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- DOBUSJIVSSJEDA-UHFFFAOYSA-L 1,3-dioxa-2$l^{6}-thia-4-mercuracyclobutane 2,2-dioxide Chemical compound [Hg+2].[O-]S([O-])(=O)=O DOBUSJIVSSJEDA-UHFFFAOYSA-L 0.000 description 1
- 208000007204 Brain death Diseases 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910021607 Silver chloride Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006931 brain damage Effects 0.000 description 1
- 231100000874 brain damage Toxicity 0.000 description 1
- 208000029028 brain injury Diseases 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 210000003169 central nervous system Anatomy 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- -1 ferrous metals Chemical class 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000002917 insecticide Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229940074994 mercuric sulfate Drugs 0.000 description 1
- 229910000372 mercury(II) sulfate Inorganic materials 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000006303 photolysis reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 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
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
-
- 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
- C02F1/70—Treatment of water, waste water, or sewage by reduction
-
- 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
Landscapes
- 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)
- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
Invention describes a kind of method for removing mercury in acidic high-strength mercury-containing waste water, comprise the following steps：Bivalent mercury waste water will be contained first and be collected to acid and alkali-resistance and in the preferable reaction vessel of UV light permeability, sodium chloride is added into waste water, complex reaction is carried out under agitation, complex reaction adds fulvic acid after terminating, this container is put into photochemical reaction device again, photochemical reduction reaction is carried out under agitation, the bivalent mercury in waste water is reduced to calogreen and reclaimed, and the supernatant after separation of solid and liquid is to handle water outlet.The present invention solves the problems, such as acidic high-strength mercury-containing waste water environmental pollution, have the advantages that technique is simple, easily implements, be quick, both the mercury in waste water can have been removed in acid condition economical and efficient, Mercury in Wastewater can be reclaimed again, processing water outlet can also be allowed to have the possibility of recovery acid, there is good economic benefit and environmental benefit.
Description
Technical field
The invention belongs to Environmental Chemistry technical field, and in particular to a kind of skill for removing mercury in acidic high-strength mercury-containing waste water
Art.
Background technology
Mercury is because of its special physicochemical properties and by chemical industry for making chlorine and alkali factory, non-ferrous metals smelting works, insecticide factory and majorization
Industrial and commercial bank's industry widely uses.In addition, in CODCrIn continuous mode, to avoid the interference of chlorion, conventional mercuric sulfate makees screening agent.
During the production and use of mercury, it is stronger to be inevitably generated toxicity, easy biological concentration and is difficult to biodegradable mercurous
Waste water.Mercury enters people and knows from experience destruction central nervous system, and counterpart, mucous membrane and tooth also have harmful effect, for a long time exposed to height
Brain damage and death can be caused in mercury environment.To avoid pollution of the mercury to environment, pollution sources, many rows in China are efficiently controlled
Put standard such as《Urban wastewater treatment firm pollutant emission standard》GB18918-2002,《Integrated wastewater discharge standard》GB8918—
1996,《Household refuse landfill sites contamination control standard》GB16889-2008 etc. is provided to the concentration of emission of mercury.Therefore,
Mercury-containing waste water is before environment is discharged, it is necessary to removes mercury therein by effectively processing.Due to mercury and a kind of important chemical industry
Raw material, when handling high concentration mercury-containing waste water, it is efficent use of resources, the recovery of mercury need to be considered.
At present, traditional mercury-containing waste water treatment method mainly have coagulant sedimentation, metal deoxidization, active carbon adsorption, from
Sub- exchange process, electrolysis, microbial method etc..In these methods, though can to handle high concentration mercurous for some methods such as coagulant sedimentation
Waste water, but being introduced into for coagulant can cause the mercury in waste water to be difficult to effectively reclaim；Though some methods such as alkali precipitation recoverable wastewater
In mercury, but waste water need to be adjusted in alkaline environment in processing, for acid mercury-containing waste water, can so consumed substantial amounts of
Alkali is so as to increasing processing cost；It is only mercurous in processing low concentration if some methods such as active carbon adsorption, ion-exchange etc.
It is just economical during waste water；Metal deoxidization and traditional photochemical reduction are that the mercury ion in waste water is converted into mercury simple substance mostly
Make mercury volatile into air, so as to cause secondary pollution.For acidic high-strength mercury-containing waste water, due to mercury content compared with
Height, the recovery of mercury must be considered in processing.Because waste water is in acidity, recovery condition is considered as in recovery and is maintained at acid as far as possible
Under the conditions of, the water after processing is had the possibility of recovery acid.Therefore, research is a kind of in acid condition to convert the mercury in waste water
Do not cause into the utility for being easy to be separated from the water and the technology of secondary pollution very necessary, develop this technology have it is larger
Practical value.
The content of the invention
For the prevention and cure of pollution problem of mercury in current acidic high-strength mercury-containing waste water, the purpose of the present invention is to find a kind of energy
The mercury in waste water is removed and reclaimed in acid condition, technique is simple, easily implements, quick technology.It is it is characterized in that first
Bivalent mercury waste water will first be contained and be collected to acid and alkali-resistance and in the preferable container of UV light permeability, sodium chloride is added into waste water,
Complex reaction is carried out under agitation, and complex reaction adds fulvic acid after terminating, then this container is put into photochemical reaction dress
Put, carry out photochemical reduction reaction, separation of solid and liquid under agitation, supernatant is processing water outlet, and solid is the mercuration of recovery
Compound.The addition of sodium chloride, which should reach, makes mercuric mass ratio in Chlorine in Solution ion and waste water be 0.5:1~1:1, network
The conjunction reaction time is 10 ~ 30min, and the mixing speed of complex reaction is 100~200r/min, during complex reaction in solution hydrogen from
Sub- concentration is 0.1~6mol/L, and the temperature of complex reaction is 15 ~ 25 DEG C, mercuric matter in the fulvic acid and waste water that are added
Amount is than being 15:1~30:1, the initial temperature of photochemical reduction reaction is 15 ~ 25 DEG C, time of photochemical reduction reaction for 1~
4h, the mixing speed of photochemical reduction reaction are 100~200r/min, and the dominant wavelength of ultraviolet light is during photochemical reduction reaction
290~400nm, uviol lamp power are 50~300W/L.
The object of the present invention is achieved like this：Sodium chloride is added into high concentration mercury-containing waste water, bivalent mercury in water can be made
In acid condition mainly with the complex state of chlorine（HgClx x-2）Form exist.Under ultraviolet lighting effect, in waste water
HgClx x-2Quick photo-reduction process can occur, because there is the presence of a large amount of chlorions, the reduction to mercury can be weakened, make mercury
With the state of mercurous and chloride binding generation calogreen.In mercury reduction process, the effect of fulvic acid has：（1）Fulvic acid
Contain the isostructural active group of a large amount of semiquinones in molecule, the work of electron transfer mediator is played in the redox reaction of mercury
With accelerating the photo-reduction process of mercury；（2）The reduction group such as carboxyl in molecule directly plays reduction to bivalent mercury；（3）It is rich
In acid have stronger absorption to the nm of 290 nm ~ 400 UVR, under the irradiation of this wave band ultraviolet light, fulvic acid absorbs
Sensitized photodecomposition effect can be produced after photon, carries out photo induced electron transfer process, caused electronics can reduce bivalent mercury.By
A large amount of chlorions are there are in system, mercuric oxidizing potential can be reduced, this causes the reduction of fulvic acid only to rest on one
In the valency mercury stage, avoid the generation of nonvalent mercury.Because solubility of the calogreen in water is relatively low, with solid precipitation in water
Form is present, and the purpose of removal and the recovery of Mercury in Wastewater is just can reach by separation of solid and liquid.What is be related in processing procedure is main
Equation such as formula（1）~（5）.The mercury in high concentration mercury-containing waste water under acid condition can be removed and be reclaimed by the above method,
Effectively achieve the purpose of purification sewage.
The direct photoreduction of mercury under Chloride-ion System
Hg2++ xCl-→HgClx x-2（1）
HgClx x-2+ hυ→Hg2Cl2+ Cl-（2）
The direct reduction reactor of fulvic acid under Chloride-ion System
FAred+ HgClx x-2→Hg2Cl2+ FAox+ Cl-（3）
The photosensitizer reduction reaction of fulvic acid under Chloride-ion System
FA+ hυ→FA*（Excitation state）（4）
FA*+ HgClx x-2→FA+ Hg2Cl2+ Cl-（5）
Relative to existing method, outstanding advantages of the invention are to be made in acid condition using cheap chloride
Complexing agent, the bivalent mercury in waste water is effectively reduced into calogreen with free of contamination ultraviolet light and carries out precipitation recovery；Secondly,
Recycling directly carried out to mercury in acid condition avoid to consume caused by substantial amounts of alkali economy during pH adjust
Input, makes processing water outlet have the possibility of recovery acid, economic and environment-friendly；Again, nature is employed to be widely present and environment-friendly
Fulvic acid is effectively improved reduction reaction efficiency so that wastewater treatment is simpler as photosensitizer and reducing agent.Therefore,
The technical matters is simple, easily implements, and by the effectively removal and recovery of the mercury in waste water in sour environment, has obvious environment
Benefit and economic benefit.
Specific implementation method
Embodiment 1:Hg in certain wastewater from chemical industry2+Concentration be 156.86mg/L, hydrogen ion concentration is 0.1mol/L in water.
Take waste water 1L to be 2L acid and alkali-resistances in a volume and consolidate in the preferable container of UV light permeability, adding 0.2g sodium chloride
Body, 15min is reacted under conditions of being 120r/min in 20 DEG C and mixing speed, then fulvic acid 4g is added into the container, will held
Device is transferred to photochemical reactor, solution initial temperature be 25 DEG C, mixing speed 150r/min, ultraviolet light dominant wavelength be
365nm, uviol lamp power carry out photochemical reduction reaction 2h under conditions of being 150W.After photochemical reduction reaction terminates, solid-liquid
Separation, supernatant is water outlet after processing, Hg in water outlet2+Concentration be reduced to 4.70mg/L, Hg2+Clearance up to 97%, gained
The quality of calogreen is 159mg in solid, and the rate of recovery of mercury is up to 87%.
Embodiment 2：Ag in the COD measure waste liquids of certain effluent of municipal sewage plant on-line monitoring+、Hg2+、H+, Cr VI
Concentration be respectively 4152mg/L, 4249mg/L, 5.1mol/L, 3082.54mg/L.Waste liquid 5L is come together in into a volume first
It is anti-under conditions of 36g sodium chloride is 180r/min in 20 DEG C and mixing speed in the container 1 of 8L acid and alkali-resistances, to be added into waste liquid
Answer 15min, chlorion is carried out complex reaction with mercury while the AgCl natural sedimentations of generation, added in the supernatant after desilver
75g activity powdered carbons, by the hexavalent chrome reduction in waste liquid to trivalent, 30min, separation of solid and liquid, by its supernatant are reacted at normal temperatures
Volume is transferred to for 8L acid and alkali-resistances and in the preferable container of UV light permeability 2,400g fulvic acid is added into container 2, will
Container 2 is put into photochemical reactor, uviol lamp dominant wavelength be 290nm, power 1200W, initial temperature be 20 DEG C and stirring
Speed carries out photochemical reduction reaction 4h under conditions of being 120r/min, after reaction terminates, separation of solid and liquid, its supernatant is processing
Water outlet afterwards.Hg in water outlet2+Concentration be reduced to 160.32mg/L, Hg2+Clearance up to 96.23%, the matter of mercury in gained solid
Measure as 21.25g, the rate of recovery of mercury is up to 85%.
Claims (1)
- A kind of 1. method for removing mercury in acidic high-strength mercury-containing waste water, it is characterised in that bivalent mercury waste water will be contained first and be collected to Acid and alkali-resistance and in the preferable reaction vessel of UV light permeability, sodium chloride is added into waste water, carries out network under agitation Reaction is closed, complex reaction adds fulvic acid after terminating, then this container is put into photochemical reaction device, enters under agitation Row photochemical reduction reaction, separation of solid and liquid, supernatant for processing water outlet, solid for recovery mercury compound, the addition of sodium chloride Amount, which should reach, makes chlorion and mercuric mass ratio in waste water in waste water be 0.5:1~1:1, the complex reaction time be 10~ 30min, the mixing speed of complex reaction are 100~200r/min, during complex reaction in solution hydrogen ion concentration be 0.1~ 6mol/L, the temperature of complex reaction is 15 ~ 25 DEG C, and mercuric mass ratio is 15 in the fulvic acid and waste water that are added:1~ 30:1, the initial temperature of photochemical reduction reaction is 15 ~ 25 DEG C, and time of photochemical reduction reaction is 1~4h, photoreduction The mixing speed of reaction is 100~200r/min, and the dominant wavelength of ultraviolet light is 290~400nm during photochemical reduction reaction, ultraviolet Lamp power is 50~300W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610028334.9A CN105565559B (en) | 2016-01-18 | 2016-01-18 | A kind of technology for removing mercury in acidic high-strength mercury-containing waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610028334.9A CN105565559B (en) | 2016-01-18 | 2016-01-18 | A kind of technology for removing mercury in acidic high-strength mercury-containing waste water |
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| Publication Number | Publication Date |
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| CN105565559A CN105565559A (en) | 2016-05-11 |
| CN105565559B true CN105565559B (en) | 2018-02-02 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5710383A (en) * | 1980-06-20 | 1982-01-19 | Sumitomo Chem Co Ltd | Removing method of heavy metallic element contained in waste water |
| JP2002361237A (en) * | 2001-06-08 | 2002-12-17 | Ebara Corp | Method and device for treating waste water containing cod component |
| CN101811795A (en) * | 2010-04-22 | 2010-08-25 | 长沙华时捷环保科技发展有限公司 | Processing method and processing system thereof for acidic waste water containing heavy metals |
| CN103752598A (en) * | 2013-12-25 | 2014-04-30 | 天津生态城环保有限公司 | Equipment and method for restoring heavy-metal-polluted soil by combination of leaching method and oxidation method |
-
2016
- 2016-01-18 CN CN201610028334.9A patent/CN105565559B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5710383A (en) * | 1980-06-20 | 1982-01-19 | Sumitomo Chem Co Ltd | Removing method of heavy metallic element contained in waste water |
| JP2002361237A (en) * | 2001-06-08 | 2002-12-17 | Ebara Corp | Method and device for treating waste water containing cod component |
| CN101811795A (en) * | 2010-04-22 | 2010-08-25 | 长沙华时捷环保科技发展有限公司 | Processing method and processing system thereof for acidic waste water containing heavy metals |
| CN103752598A (en) * | 2013-12-25 | 2014-04-30 | 天津生态城环保有限公司 | Equipment and method for restoring heavy-metal-polluted soil by combination of leaching method and oxidation method |
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| CN105565559A (en) | 2016-05-11 |
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Effective date of registration: 20181205 Address after: 610041, 24th Floor, New Hope International C Block, No. 8, Jitai No. 3 Road, Chengdu High-tech Zone, Sichuan Province (1-8) Patentee after: Deepblue Environmental Protection Technologies Co., Ltd. Address before: 610068 No. 5 Jing'an Road, Jinjiang District, Chengdu City, Sichuan Province Patentee before: Sichuan Normal University |