CN109574318A - A kind of processing of nickel-containing waste water and recovery process - Google Patents
A kind of processing of nickel-containing waste water and recovery process Download PDFInfo
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- CN109574318A CN109574318A CN201910008520.XA CN201910008520A CN109574318A CN 109574318 A CN109574318 A CN 109574318A CN 201910008520 A CN201910008520 A CN 201910008520A CN 109574318 A CN109574318 A CN 109574318A
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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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- 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)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention provides a kind of processing of nickel-containing waste water and recovery process, including sequentially connected Nickel-bearing Waste water power nickel waste water pond, Sand Filtration System, UF system, heat-exchange system, RO system, reaction system, plate compression system, baking oven and recycle-water RO system, this method can effectively handle nickel-containing waste water, so that it is produced water reuse, and nickel product can be recycled.
Description
Technical field
The present invention relates to technical field of waste water processing, specially a kind of nickel-containing waste water processing and recovery process.
Background technique
In field of waste water treatment, nickel-containing waste water belongs to the toxic wastewater of high-concentration hardly-degradable.Heavy metal in waste water cannot
It is biodegradable, is enriched in vivo, cause slow poisoning.The method of processing nickel-containing waste water mainly has chemical treatment at present
Method, absorption method, ion-exchange and membrane separation technique etc..Single is not only taken up a large area using chemical method and is difficult to stablize
It is up to standard；Adsorbent price used in absorption method is more expensive and can generate secondary pollution；Ion-exchange operational sequence is complex,
And the service life of resin can be caused shorter due to the influence of Organic Pollutants in Wastewater；Membrane separation technique can effectively remove useless
Nickel ion in water, equipment is simple, without adding chemical agent, as long as cooperation pre-treatment, is avoided that generating film blocking etc. asks
Topic.Nickel is the important nonferrous materials of one kind again simultaneously, base friend's corrosion resistance, and nickel salt is just widely used.
In consideration of it, the purpose of the present invention is to provide it is a kind of can stability and high efficiency processing nickel-containing waste water, so that its is produced water and return
With, and the technique that nickel product can be recycled.
Summary of the invention
Technical problem solved by the invention is to provide a kind of nickel-containing waste water processing and recovery process, to solve above-mentioned back
The problem of being proposed in scape technology.
Technical problem solved by the invention is realized using following technical scheme:
A kind of processing of nickel-containing waste water and recovery process, including sequentially connected electric nickel waste water pond, Sand Filtration System, UF system,
Heat-exchange system, RO system, reaction system, plate compression system, baking oven and recycle-water RO system.
Wherein Sand Filtration System mainly includes sandfiltration pot；UF system mainly includes UF membrane module and UF concentrated water case；
Heat-exchange system mainly includes heat exchanger；
RO system mainly includes level-one RO membrane module, second level RO membrane module, RO water producing tank and RO concentrated water case；
Reaction system mainly includes reactor tank 1, reactor tank 2, sodium hydroxide dosing tank and sodium carbonate dosing tank；
It mainly include plate and frame filter press, filtrate collecting tank, sludge collecting tank in plate compression system；
Recycle-water RO system mainly includes recycle-water RO membrane module, recycle-water RO water producing tank and recycle-water RO concentrated water case.
Key step is as follows:
Electric nickel waste water is collected by electric nickel waste water pond；
Electric nickel waste water pond waste water is by pumping the sandfiltration pot filtering and impurity removing being delivered in Sand Filtration System；
Further removal of impurities concentration in the UF membrane module that sandfiltration pot water outlet is delivered in UF system, the conveying of sandfiltration pot backwash water
Backwash water treatment system is delivered to UF concentrated water case, then by UF concentrated water case；
UF produces water, and by the heat exchanger in heat-exchange system, (winter is heated by steam, and waste water temperature is made to be maintained at 22~28
DEG C) it is delivered to the level-one RO membrane module in RO system, the concentrated water after the concentration of level-one membrane module is delivered to second level RO membrane module, passes through
The production water of level-one RO membrane module and second level RO membrane module is delivered to recycle-water RO system；Second level RO membrane module concentrated water is delivered to reaction
Reactor tank 1 and reactor tank 2 in system；
The production water of level-one RO membrane module and second level RO membrane module is final through the recycle-water RO membrane module in recycle-water RO system
After concentration, production water is delivered to recycle-water RO water producing tank and keeps in, and uses as recycle-water, concentrated water is delivered to recycle-water RO concentrated water
Case is temporary, and the concentrated water in recycle-water RO concentrated water case is delivered to UF system and carries out next step reaction；
The backwash water of RO system and recycle-water RO system is delivered to backwash water treatment system；
It is firstly added sodium hydroxide in reactor tank 1 and reactor tank 2 in reaction system, reaction solution pH is adjusted to 6~9
When, then sodium carbonate is added into reactor tank 1 and reactor tank 2, pH to 9~11 is adjusted, the reaction time maintains 1~3h, to abundant
After the reaction was completed, then by the reaction solution in reactor tank 1 and reactor tank 2 be delivered in the plate and frame filter press in plate compression system into
Row filters pressing；
Filtrate after plate and frame filter press filters pressing is temporary using filtrate collecting tank, is subsequently delivered to carry out in electric nickel waste water pond
Subsequent reactions；
Nickel mud after plate and frame filter press filters pressing is temporary using sludge collecting tank, is then transported to drying in oven, baking oven
Temperature setting is after 105 DEG C~135 DEG C, the drying of nickel mud up to nickel product.
Compared with prior art, the beneficial effects of the present invention are:
Operation of the present invention is simple, and operating cost is low, easy to maintain；Reuse is between making production waterwheel using film concentration technique to fill
Water resource is utilized with dividing；The waste that nickel salt product avoids nickel resources is made in concentrate；Using garden steam resource by changing
Hot device heating pipe in winter, avoids pipeline from crystallizing.
This method can effectively handle nickel-containing waste water, so that it is produced water reuse, and can recycle nickel product.
Detailed description of the invention
Fig. 1 is flow chart of the invention.
Specific embodiment
In order to make implement technical means of the invention, creation characteristic, reach purpose and effect is easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
As shown in Figure 1,
A kind of processing of nickel-containing waste water and recovery process, including sequentially connected electric nickel waste water pond, Sand Filtration System, UF system,
Heat-exchange system, RO system, reaction system, plate compression system, baking oven and recycle-water RO system.
Wherein Sand Filtration System mainly includes sandfiltration pot；UF system mainly includes UF membrane module and UF concentrated water case；
Heat-exchange system mainly includes heat exchanger；
RO system mainly includes level-one RO membrane module, second level RO membrane module, RO water producing tank and RO concentrated water case；
Reaction system mainly includes reactor tank 1, reactor tank 2, sodium hydroxide dosing tank and sodium carbonate dosing tank；
It mainly include plate and frame filter press, filtrate collecting tank, sludge collecting tank in plate compression system；
Recycle-water RO system mainly includes recycle-water RO membrane module, recycle-water RO water producing tank and recycle-water RO concentrated water case.
Key step is as follows:
Electric nickel waste water is collected by electric nickel waste water pond；
Electric nickel waste water pond waste water is by pumping the sandfiltration pot filtering and impurity removing being delivered in Sand Filtration System；
Further removal of impurities concentration in the UF membrane module that sandfiltration pot water outlet is delivered in UF system, the conveying of sandfiltration pot backwash water
Backwash water treatment system is delivered to UF concentrated water case, then by UF concentrated water case；
UF produces water, and by the heat exchanger in heat-exchange system, (winter is heated by steam, and waste water temperature is made to be maintained at 22~28
DEG C) it is delivered to the level-one RO membrane module in RO system, the concentrated water after the concentration of level-one membrane module is delivered to second level RO membrane module, passes through
The production water of level-one RO membrane module and second level RO membrane module is delivered to recycle-water RO system；Second level RO membrane module concentrated water is delivered to reaction
Reactor tank 1 and reactor tank 2 in system；
The production water of level-one RO membrane module and second level RO membrane module is final through the recycle-water RO membrane module in recycle-water RO system
After concentration, production water is delivered to recycle-water RO water producing tank and keeps in, and uses as recycle-water, concentrated water is delivered to recycle-water RO concentrated water
Case is temporary, and the concentrated water in recycle-water RO concentrated water case is delivered to UF system and carries out next step reaction；
The backwash water of RO system and recycle-water RO system is delivered to backwash water treatment system；
It is firstly added sodium hydroxide in reactor tank 1 and reactor tank 2 in reaction system, reaction solution pH is adjusted to 6~9
When, then sodium carbonate is added into reactor tank 1 and reactor tank 2, pH to 9~11 is adjusted, the reaction time maintains 1~3h, to abundant
After the reaction was completed, then by the reaction solution in reactor tank 1 and reactor tank 2 be delivered in the plate and frame filter press in plate compression system into
Row filters pressing；
Filtrate after plate and frame filter press filters pressing is temporary using filtrate collecting tank, is subsequently delivered to carry out in electric nickel waste water pond
Subsequent reactions；
Nickel mud after plate and frame filter press filters pressing is temporary using sludge collecting tank, is then transported to drying in oven, baking oven
Temperature setting is after 105 DEG C~135 DEG C, the drying of nickel mud up to nickel product.
Embodiment 1
Electric nickel waste water influent density is 200mg/L, is collected by electric nickel waste water pond；Electric nickel waste water pond waste water is delivered to sand by pumping
Filter tank filtering and impurity removing；Sandfiltration pot water outlet is delivered in UF membrane module further removal of impurities concentration, sandfiltration pot backwash water and is delivered to UF
Concentrated water case, then backwash water treatment system is delivered to by UF concentrated water case；UF produces water, and by heat exchanger, (winter is heated by steam, is made
Waste water temperature is maintained at 25 DEG C) it is delivered to level-one RO membrane module, the concentrated water after the concentration of level-one membrane module is delivered to second level RO film
Component, the production water through level-one RO membrane module and second level RO membrane module are delivered to recycle-water RO system 9；Second level RO membrane module concentrated water is defeated
It send to reactor tank 1 and reactor tank 2；The production water of level-one RO membrane module and second level RO membrane module is finally concentrated through recycle-water RO membrane module
After processing, production water is delivered to recycle-water RO water producing tank and keeps in, and uses as recycle-water, it is temporary that concentrated water is delivered to recycle-water RO concentrated water case
It deposits, the concentrated water in recycle-water RO concentrated water case is delivered to UF system 3 and carries out next step reaction；RO system 5 and recycle-water RO system 9
Backwash water is delivered to backwash water treatment system；It is firstly added sodium hydroxide in reactor tank 1 and reactor tank 2, by reaction solution pH tune
When section is to 6, then sodium carbonate is added into reactor tank 1 and reactor tank 2, adjusts pH to the reaction time maintains 1.5h, then will reaction
Reaction solution in tank 1 and reactor tank 2, which is delivered in plate and frame filter press, carries out filters pressing；Filtrate after plate and frame filter press filters pressing utilizes
Filtrate collecting tank is temporary, is subsequently delivered to carry out subsequent reactions in electric nickel waste water pond；Nickel mud benefit after plate and frame filter press filters pressing
It is temporary with sludge collecting tank, it is then transported to drying in baking oven 8, oven temperature is arranged at 115 DEG C, and the nickel product nickel after drying is pure
Degree is 41.2%.
Embodiment 2
Electric nickel waste water influent density is 180mg/L, is collected by electric nickel waste water pond；Electric nickel waste water pond waste water is delivered to sand by pumping
Filter tank filtering and impurity removing；Sandfiltration pot water outlet is delivered in UF membrane module further removal of impurities concentration, sandfiltration pot backwash water and is delivered to UF
Concentrated water case, then backwash water treatment system is delivered to by UF concentrated water case；UF produces water, and by heat exchanger, (winter is heated by steam, is made
Waste water temperature is maintained at 28 DEG C) it is delivered to level-one RO membrane module, the concentrated water after the concentration of level-one membrane module is delivered to second level RO film
Component, the production water through level-one RO membrane module and second level RO membrane module are delivered to recycle-water RO system 9；Second level RO membrane module concentrated water is defeated
It send to reactor tank 1 and reactor tank 2；The production water of level-one RO membrane module and second level RO membrane module is finally concentrated through recycle-water RO membrane module
After processing, production water is delivered to recycle-water RO water producing tank and keeps in, and uses as recycle-water, it is temporary that concentrated water is delivered to recycle-water RO concentrated water case
It deposits, the concentrated water in recycle-water RO concentrated water case is delivered to UF system 3 and carries out next step reaction；RO system 5 and recycle-water RO system 9
Backwash water is delivered to backwash water treatment system；It is firstly added sodium hydroxide in reactor tank 1 and reactor tank 2, by reaction solution pH tune
When section is to 7, then sodium carbonate is added into reactor tank 1 and reactor tank 2, adjusts pH to 9, the reaction time maintains 1.0h, then will be anti-
It answers the reaction solution in tank 1 and reactor tank 2 to be delivered in plate and frame filter press and carries out filters pressing；Filtrate benefit after plate and frame filter press filters pressing
It is temporary with filtrate collecting tank, it is subsequently delivered to carry out subsequent reactions in electric nickel waste water pond；Nickel mud after plate and frame filter press filters pressing
It is temporary using sludge collecting tank, it is then transported to drying in baking oven 8, the nickel product nickel at 105 DEG C, after drying is arranged in oven temperature
Purity is 39.8%.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.Claimed range of the invention by appended claims and
Its equivalent thereof.
Claims (7)
1. a kind of nickel-containing waste water processing and recovery process, including sequentially connected Nickel-bearing Waste water power nickel waste water pond, Sand Filtration System, UF
System, heat-exchange system, RO system, reaction system, plate compression system, baking oven and recycle-water RO system, key step are as follows:
(1) electric nickel waste water is collected by electric nickel waste water pond；
(2) electric nickel waste water pond waste water is by pumping the sandfiltration pot filtering and impurity removing being delivered in Sand Filtration System；
(3) further removal of impurities concentration in the UF membrane module that sandfiltration pot water outlet is delivered in UF system, the conveying of sandfiltration pot backwash water
Backwash water treatment system is delivered to UF concentrated water case, then by UF concentrated water case；
(4) UF production water by the heat exchanger in heat-exchange system, (heated by steam, and waste water temperature is made to be maintained at 22~28 by winter
DEG C) it is delivered to the level-one RO membrane module in RO system, the concentrated water after the concentration of level-one membrane module is delivered to second level RO membrane module, passes through
The production water of level-one RO membrane module and second level RO membrane module is delivered to recycle-water RO system；Second level RO membrane module concentrated water is delivered to reaction
Reactor tank 1 and reactor tank 2 in system；
(5) the production water of level-one RO membrane module and second level RO membrane module is finally dense through the recycle-water RO membrane module in recycle-water RO system
After contracting processing, production water is delivered to recycle-water RO water producing tank and keeps in, and uses as recycle-water, concentrated water is delivered to recycle-water RO concentrated water case
Temporary, the concentrated water in recycle-water RO concentrated water case is delivered to UF system and carries out next step reaction；
(6) backwash water of RO system and recycle-water RO system is delivered to backwash water treatment system；
(7) it is firstly added sodium hydroxide in the reactor tank 1 and reactor tank 2 in reaction system, when reaction solution pH is adjusted to 6~9,
Sodium carbonate is added into reactor tank 1 and reactor tank 2 again, adjusts pH to 9~11, the reaction time maintains 1~3h, to sufficiently react
After the completion, it then will be pressed in plate and frame filter press that the reaction solution in reactor tank 1 and reactor tank 2 is delivered in plate compression system
Filter；
(8) filtrate after plate and frame filter press filters pressing is temporary using filtrate collecting tank, is subsequently delivered to carry out in electric nickel waste water pond
Subsequent reactions；
(9) the nickel mud after plate and frame filter press filters pressing is temporary using sludge collecting tank, is then transported to drying in oven, baking oven temperature
Degree setting is after 105 DEG C~135 DEG C, the drying of nickel mud up to nickel product.
2. a kind of nickel-containing waste water processing according to claim 1 and recovery process, it is characterised in that: Sand Filtration System mainly wraps
Include sandfiltration pot；UF system mainly includes UF membrane module and UF concentrated water case.
3. a kind of nickel-containing waste water processing according to claim 1 and recovery process, it is characterised in that: heat-exchange system mainly wraps
Include heat exchanger.
4. a kind of nickel-containing waste water processing according to claim 1 and recovery process, it is characterised in that: RO system mainly includes
Level-one RO membrane module, second level RO membrane module, RO water producing tank and RO concentrated water case.
5. a kind of nickel-containing waste water processing according to claim 1 and recovery process, it is characterised in that: reaction system mainly wraps
Include reactor tank 1, reactor tank 2, sodium hydroxide dosing tank and sodium carbonate dosing tank.
6. a kind of nickel-containing waste water processing according to claim 1 and recovery process, it is characterised in that: in plate compression system
It mainly include plate and frame filter press, filtrate collecting tank, sludge collecting tank.
7. a kind of nickel-containing waste water processing according to claim 1 and recovery process, it is characterised in that: recycle-water RO system master
It to include recycle-water RO membrane module, recycle-water RO water producing tank and recycle-water RO concentrated water case.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910008520.XA CN109574318A (en) | 2019-01-04 | 2019-01-04 | A kind of processing of nickel-containing waste water and recovery process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910008520.XA CN109574318A (en) | 2019-01-04 | 2019-01-04 | A kind of processing of nickel-containing waste water and recovery process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113860549A (en) * | 2021-09-30 | 2021-12-31 | 中新联科环境科技(安徽)有限公司 | Method for treating nickel-electroplating wastewater and backwashing water equipment used by same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113860549A (en) * | 2021-09-30 | 2021-12-31 | 中新联科环境科技(安徽)有限公司 | Method for treating nickel-electroplating wastewater and backwashing water equipment used by same |
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