CN108314221A - The processing method of one heavy metal species and cyanide combined pollution waste water - Google Patents
The processing method of one heavy metal species and cyanide combined pollution waste water Download PDFInfo
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- CN108314221A CN108314221A CN201810256668.0A CN201810256668A CN108314221A CN 108314221 A CN108314221 A CN 108314221A CN 201810256668 A CN201810256668 A CN 201810256668A CN 108314221 A CN108314221 A CN 108314221A
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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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
- C02F1/52—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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
-
- 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
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/18—Cyanides
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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
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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)
- Removal Of Specific Substances (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The present invention relates to the processing methods of a heavy metal species and cyanide combined pollution waste water.The invention belongs to industrial waste water treatments.The processing method of heavy metal and cyanide combined pollution waste water, technical process：1) pH value of waste water is adjusted：Basic agent is added in pollutant effluents, adjusts pH value of waste water to 8 10；2) sulfide precipitation：Vulcanized sodium is added, 5min 20min is stirred, obtains sulfide precipitation waste water；3) flocculation sediment：Addition flocculant simultaneously stirs evenly, and stands 10min 30min, obtains flocculation sediment waste water；4) activated carbon filters：It is sent into activated carbon filter and filters, obtain a filtered wastewater；5) oxidation removes cyanogen：Oxidating chemicals are added, 10min 20min is stirred, obtains oxidized waste water；6) ultrafiltration membrance filter：It is sent into ultrafiltration pond and carries out ultrafiltration membrance filter, obtain repairing water purification up to standard.The present invention has the advantages that technically reliable, process stabilizing, processing cost are low etc., it can be achieved that the processing up to standard of combined pollution waste water, economy, environmental and social benefits are good.
Description
Technical field
The invention belongs to industrial waste water treatments, useless more particularly to a heavy metal species and cyanide combined pollution
The processing method of water.
Background technology
Heavy metal and cyanide combined pollution waste water are mostly from industries such as plating, process hides and metallurgy, if without up to standard
Processing, easily causes seriously to pollute, great threat human health to soil and groundwater.Heavy metal and cyanide combined pollution waste water
Processing up to standard be always environmental protection industry (epi) difficulties.In recent years, the research of domestic and international relevant unit form ion-exchange,
The cyanide pollutions wastewater treatment methods such as Yin Kefa-ozone oxidization combination method, photoelectric combination method.
Chinese invention patent (201510577962.8) discloses a kind of method removing the cyanide in waste water, in neutrality
Under the conditions of, to the non-addition LDH decyanation agent that is right, cyanide wastewater processing is carried out using ion-exchange.The technology needs to take off LDH
Cyanogen agent, which is heated to 650 DEG C of progress calcination process, can realize cycling and reutilization.Therefore, the process is more complicated for the technology, cost
It is higher.
Chinese invention patent (201310218794.4) discloses one kind containing cyanogen, sulphur cyanogen, process for treating heavy-metal waste water, adopts
The technology path associated with Yin Kefa and Ozonation, handles waste water.The technology low, shock resistance with processing cost
The advantages that load is strong, it is unstable but there is also techniques, the problems such as poor processing effect.
Chinese invention patent (201410100276.7) discloses a kind of processing of photoelectric combination containing heavy metal cyanide
Waste water and the method for recycling heavy metal simultaneously.EDTA and pyrophosphate are filled with waste water in reactor by the technology, using illumination
Photo-catalysis function anode is penetrated, under the electric field action between K-A, completes the processing of pollutant.The technology is relatively advanced, water
Treatment effect is preferable, but there are equipment input costs it is high, processing capacity is low the problems such as.
Invention content
The present invention provides a heavy metal species and cyanide combined pollution to solve technical problem present in known technology
The processing method of waste water.
The object of the present invention is to provide one kind have technically reliable, process stabilizing, processing cost it is low, it can be achieved that heavy metal and
The processing method of the heavy metal and cyanide combined pollution waste water of the features such as processing up to standard of cyanide combined pollution waste water.
The processing method of one heavy metal species and cyanide combined pollution waste water especially suitable for containing cyanide, and contains
The combined pollution waste water of one or more of Cu, Mn, Pb, Zn, Cr and Cd is handled, including pH value of waste water adjusting, sulfide precipitation,
Flocculation sediment, activated carbon filtering, oxidation remove cyanogen and ultrafiltration membrance filter process, it can be achieved that heavy metal and cyanide combined pollution waste water
Processing up to standard.Water purification water quality up to standard is repaired to reach《Integrated wastewater discharge standard》(GB8978-1996).
The processing method of heavy metal and cyanide combined pollution waste water of the present invention is adopted the technical scheme that：
The processing method of one heavy metal species and cyanide combined pollution waste water, it is characterized in that：Heavy metal and cyanide are compound
The processing method of pollutant effluents includes following technical process：
1) pH value of waste water is adjusted：Basic agent is added in pollutant effluents, adjusts pH value of waste water to 8-10, it is useless to obtain alkalinity
Water；
2) sulfide precipitation：Vulcanized sodium is added in alkaline waste water, is stirred 5min-20min, is obtained sulfide precipitation waste water；
3) flocculation sediment：Flocculant is added in sulfide precipitation waste water and is stirred evenly, and is stood 10min-30min, is wadded a quilt with cotton
Retrogradation shallow lake waste water；
4) activated carbon filters：Flocculation sediment waste water is sent into activated carbon filter and is filtered, and a filtered wastewater is obtained；
5) oxidation removes cyanogen：Oxidating chemicals are added in filtered wastewater, are stirred 10min-20min, are obtained oxidized waste water；
6) ultrafiltration membrance filter：Oxidized waste water is sent into ultrafiltration pond and carries out ultrafiltration membrance filter, obtains repairing water purification up to standard.
The processing method of heavy metal and cyanide combined pollution waste water of the present invention can also adopt the following technical scheme that：
The processing method of the heavy metal and cyanide combined pollution waste water, its main feature is that：Heavy metal and cyanide are multiple
It closes pollutant effluents and contains one or more of Cu, Mn, Pb, Zn, Cr, Cd.
The processing method of the heavy metal and cyanide combined pollution waste water, its main feature is that：The alkali that pH value of waste water is adjusted
Property medicament be CaO or NaOH.
The processing method of the heavy metal and cyanide combined pollution waste water, its main feature is that：When sulfide precipitation, alkalinity is useless
The vulcanized sodium additive amount of water is every cubic metre of 0.1kg-2kg.
The processing method of the heavy metal and cyanide combined pollution waste water, its main feature is that：When flocculation sediment, flocculant
For aluminium polychloride or poly-ferric chloride.
The processing method of the heavy metal and cyanide combined pollution waste water, its main feature is that：When oxidation is except cyanogen, medicine is aoxidized
Agent is chlorine dioxide or sodium peroxydisulfate, and the oxidating chemicals additive amount of every cubic metre of filtered wastewater is 10g-200g.
The invention has the advantages and positive effects that：
The processing method of heavy metal and cyanide combined pollution waste water as a result of the completely new technical solution of the present invention, with
The prior art is compared, and the present invention first uses the heavy metal in vulcanized sodium precipitation sewage, then is aoxidized with chlorine dioxide or sodium peroxydisulfate
The cyanide in sewage is decomposed, cooperation flocculation sediment, activated carbon filtering and super filter are, it can be achieved that heavy metal and cyanide are multiple
Close the processing up to standard of pollutant effluents.The present invention has the advantages that technically reliable, process stabilizing, processing cost are low etc., before engineer application
Scape is wide.
Description of the drawings
Fig. 1 is the processing method process flow chart of heavy metal and cyanide combined pollution waste water of the present invention.
Specific implementation mode
In order to further understand the content, features and effects of the present invention, the following examples are hereby given, and coordinate attached drawing
Detailed description are as follows：
The processing method of one heavy metal species and cyanide combined pollution waste water especially suitable for containing cyanide, and contains
The combined pollution waste water of one or more of Cu, Mn, Pb, Zn, Cr and Cd is handled, including pH value of waste water adjusting, sulfide precipitation,
Flocculation sediment, activated carbon filtering, oxidation remove cyanogen and ultrafiltration membrance filter process, it can be achieved that heavy metal and cyanide combined pollution waste water
Processing up to standard.Refering to attached drawing 1.
Embodiment 1
CaO is added into the pollutant effluents containing cyanide, Cu, Mn, Pb, Zn, Cr and Cd, the pH value of waste water is made to be equal to 8,
Obtain alkaline waste water；0.1kg vulcanized sodium is added into every cubic metre of alkaline waste water, is stirred 5min, is obtained sulfide precipitation waste water；To
Sulfide precipitation waste water adds aluminium polychloride and stirs evenly, and stands 10min, obtains flocculation sediment waste water；Flocculation sediment is given up
Water is sent into activated carbon filter and is filtered, and a filtered wastewater is obtained；The dioxy of 10g is added into every cubic metre of filtered wastewater
Change chlorine, stirs 10min, obtain oxidized waste water；Oxidized waste water is sent into ultrafiltration pond and carries out ultrafiltration membrance filter, obtains repairing up to standard
Water purification, water purification water quality reaches《Integrated wastewater discharge standard》(GB8978-1996).
Embodiment 2
CaO is added into the pollutant effluents containing cyanide, Cu and Cd, so that the pH value of waste water is equal to 10, it is useless to obtain alkalinity
Water；2kg vulcanized sodium is added into every cubic metre of alkaline waste water, is stirred 20min, is obtained sulfide precipitation waste water；It is useless to sulfide precipitation
Water adds aluminium polychloride and stirs evenly, and stands 30min, obtains flocculation sediment waste water；Flocculation sediment waste water is sent into activity
It is filtered in carbon filtering pool, obtains a filtered wastewater；The chlorine dioxide of 200g, stirring are added into every cubic metre of filtered wastewater
20min obtains oxidized waste water；Oxidized waste water is sent into ultrafiltration pond and carries out ultrafiltration membrance filter, obtains repairing water purification up to standard, only
Water water quality reaches《Integrated wastewater discharge standard》(GB8978-1996).
Embodiment 3
NaO is added into the pollutant effluents containing cyanide, Pb, Zn and Cr, so that the pH value of waste water is equal to 9, obtains alkalinity
Waste water；1kg vulcanized sodium is added into every cubic metre of alkaline waste water, is stirred 10min, is obtained sulfide precipitation waste water；To sulfide precipitation
Waste water adds aluminium polychloride and stirs evenly, and stands 15min, obtains flocculation sediment waste water；Flocculation sediment waste water is sent into and is lived
It is filtered in property carbon filtering pool, obtains a filtered wastewater；The chlorine dioxide that 50g is added into every cubic metre of filtered wastewater, is stirred
15min is mixed, oxidized waste water is obtained；Oxidized waste water is sent into ultrafiltration pond and carries out ultrafiltration membrance filter, obtains repairing water purification up to standard,
Water purification water quality reaches《Integrated wastewater discharge standard》(GB8978-1996).
Embodiment 4
NaO is added into the pollutant effluents containing cyanide, Pb and Cr, so that the pH value of waste water is equal to 8, it is useless to obtain alkalinity
Water；0.5kg vulcanized sodium is added into every cubic metre of alkaline waste water, is stirred 15min, is obtained sulfide precipitation waste water；To sulfide precipitation
Waste water adds poly-ferric chloride and stirs evenly, and stands 25min, obtains flocculation sediment waste water；Flocculation sediment waste water is sent into and is lived
It is filtered in property carbon filtering pool, obtains a filtered wastewater；The chlorine dioxide that 150g is added into every cubic metre of filtered wastewater, is stirred
18min is mixed, oxidized waste water is obtained；Oxidized waste water is sent into ultrafiltration pond and carries out ultrafiltration membrance filter, obtains repairing water purification up to standard,
Water purification water quality reaches《Integrated wastewater discharge standard》(GB8978-1996).
Embodiment 5
NaO is added into the pollutant effluents containing cyanide and Cr, so that the pH value of waste water is equal to 10, obtains alkaline waste water；
1.5kg vulcanized sodium is added into every cubic metre of alkaline waste water, is stirred 20min, is obtained sulfide precipitation waste water；To sulfide precipitation waste water
Addition poly-ferric chloride simultaneously stirs evenly, and stands 20min, obtains flocculation sediment waste water；Flocculation sediment waste water is sent into activated carbon
It is filtered in filter tank, obtains a filtered wastewater；The chlorine dioxide of 120g, stirring are added into every cubic metre of filtered wastewater
12min obtains oxidized waste water；Oxidized waste water is sent into ultrafiltration pond and carries out ultrafiltration membrance filter, obtains repairing water purification up to standard, only
Water water quality reaches《Integrated wastewater discharge standard》(GB8978-1996).
Embodiment 6
CaO is added into the pollutant effluents containing cyanide, Cu, Pb, Zn, Cr and Cd, the pH value of waste water is made to be equal to 8.5,
Obtain alkaline waste water；0.4kg vulcanized sodium is added into every cubic metre of alkaline waste water, is stirred 8min, is obtained sulfide precipitation waste water；To
Sulfide precipitation waste water adds aluminium polychloride and stirs evenly, and stands 18min, obtains flocculation sediment waste water；Flocculation sediment is given up
Water is sent into activated carbon filter and is filtered, and a filtered wastewater is obtained；The two of 180g is added into every cubic metre of filtered wastewater
Chlorine monoxid stirs 13min, obtains oxidized waste water；Oxidized waste water is sent into ultrafiltration pond and carries out ultrafiltration membrance filter, reparation is obtained and reaches
Target water purification, water purification water quality reach《Integrated wastewater discharge standard》(GB8978-1996).
Embodiment 7
NaO is added into the pollutant effluents containing cyanide, Cu, Pb and Cd, so that the pH value of waste water is equal to 9.5, obtains alkali
Property waste water；1.76kg vulcanized sodium is added into every cubic metre of alkaline waste water, is stirred 13min, is obtained sulfide precipitation waste water；To vulcanization
Precipitation waste water addition aluminium polychloride simultaneously stirs evenly, and stands 26min, obtains flocculation sediment waste water；Flocculation sediment waste water is sent
Enter in activated carbon filter and filter, obtains a filtered wastewater；The titanium dioxide of 25g is added into every cubic metre of filtered wastewater
Chlorine stirs 16min, obtains oxidized waste water；Oxidized waste water is sent into ultrafiltration pond and carries out ultrafiltration membrance filter, obtains repairing up to standard
Water purification, water purification water quality reach《Integrated wastewater discharge standard》(GB8978-1996).
The present embodiment has the advantages that the technically reliable, process stabilizing, processing cost are low etc., it can be achieved that heavy metal and cyanogen
The processing up to standard of compound combined pollution waste water, future in engineering applications are wide.
Claims (6)
1. the processing method of a heavy metal species and cyanide combined pollution waste water, it is characterized in that：Heavy metal and the compound dirt of cyanide
The processing method for contaminating waste water includes following technical process：
1) pH value of waste water is adjusted：Basic agent is added in pollutant effluents, is adjusted pH value of waste water to 8-10, is obtained alkaline waste water；
2) sulfide precipitation：Vulcanized sodium is added in alkaline waste water, is stirred 5min-20min, is obtained sulfide precipitation waste water；
3) flocculation sediment：Flocculant is added in sulfide precipitation waste water and is stirred evenly, and stands 10min-30min, it is heavy to obtain flocculation
Shallow lake waste water；
4) activated carbon filters：Flocculation sediment waste water is sent into activated carbon filter and is filtered, and a filtered wastewater is obtained；
5) oxidation removes cyanogen：Oxidating chemicals are added in filtered wastewater, are stirred 10min-20min, are obtained oxidized waste water；
6) ultrafiltration membrance filter：Oxidized waste water is sent into ultrafiltration pond and carries out ultrafiltration membrance filter, obtains repairing water purification up to standard.
2. the processing method of heavy metal according to claim 1 and cyanide combined pollution waste water, it is characterized in that：Heavy metal
Contain one or more of Cu, Mn, Pb, Zn, Cr, Cd with cyanide combined pollution waste water.
3. the processing method of heavy metal according to claim 1 or 2 and cyanide combined pollution waste water, it is characterized in that：It is useless
The basic agent that water pH value is adjusted is CaO or NaOH.
4. the processing method of heavy metal according to claim 1 or 2 and cyanide combined pollution waste water, it is characterized in that：Sulphur
When changing precipitation, the vulcanized sodium additive amount of alkaline waste water is every cubic metre of 0.1kg-2kg.
5. the processing method of heavy metal according to claim 1 or 2 and cyanide combined pollution waste water, it is characterized in that：Wadding
When retrogradation is formed sediment, flocculant is aluminium polychloride or poly-ferric chloride.
6. the processing method of heavy metal according to claim 1 or 2 and cyanide combined pollution waste water, it is characterized in that：Oxygen
When eliminating cyanogen, oxidating chemicals are chlorine dioxide or sodium peroxydisulfate, and the oxidating chemicals additive amount of every cubic metre of filtered wastewater is
10g-200g。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112624432A (en) * | 2020-12-31 | 2021-04-09 | 惠州金茂源环保科技有限公司 | Electroplating wastewater ozone oxidation advanced treatment method |
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| CN103086532A (en) * | 2011-10-31 | 2013-05-08 | 中国科学院生态环境研究中心 | Method for processing cyanogen-containing heavy metal electroplating wastewater |
| CN104973714A (en) * | 2015-06-23 | 2015-10-14 | 广西冶金研究院 | Deep purification and recycling method for waste water containing heavy metal ions |
| US9701556B1 (en) * | 2004-02-02 | 2017-07-11 | BioSystems Consulting Inc. | Compositions, methods, and systems for reducing contamination |
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2018
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Patent Citations (4)
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|---|---|---|---|---|
| US9701556B1 (en) * | 2004-02-02 | 2017-07-11 | BioSystems Consulting Inc. | Compositions, methods, and systems for reducing contamination |
| CN101100328A (en) * | 2006-07-05 | 2008-01-09 | 山东双凤股份有限公司 | Comprehensive treatment method for cuprous cyanide technique waste water |
| CN103086532A (en) * | 2011-10-31 | 2013-05-08 | 中国科学院生态环境研究中心 | Method for processing cyanogen-containing heavy metal electroplating wastewater |
| CN104973714A (en) * | 2015-06-23 | 2015-10-14 | 广西冶金研究院 | Deep purification and recycling method for waste water containing heavy metal ions |
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| CN112624432A (en) * | 2020-12-31 | 2021-04-09 | 惠州金茂源环保科技有限公司 | Electroplating wastewater ozone oxidation advanced treatment method |
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