CN205616685U - Heavy metal waste water treatment system - Google Patents
Heavy metal waste water treatment system Download PDFInfo
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- CN205616685U CN205616685U CN201620428638.XU CN201620428638U CN205616685U CN 205616685 U CN205616685 U CN 205616685U CN 201620428638 U CN201620428638 U CN 201620428638U CN 205616685 U CN205616685 U CN 205616685U
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- pond
- waste water
- reaction pond
- tank
- heavy metal
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Abstract
The utility model discloses a heavy metal waste water treatment system, include: consecutive a pH equalizing basin, alkaline reaction pond, primary sedimentation basin, acid airtight reaction tank, secondary sedimentation tank, neutralization reaction pond, cubic sedimentation tank, the 2nd pH equalizing basin, milipore filter filter equipment and neutralization pond. The utility model provides a heavy metal waste water treatment system uses the molybdenum concntrate to pass through the produced tail gas washing waste water of gasifier preparation nanometer molybdenum trioxide for handling waste water, through reaction and multistep are subsided many times, and filter through milipore filter filter equipment, multiple heavy metal is (including the molybdenum in making waste water, arsenic, chromium, nickel, chromium, numerous non ferrous metal such as copper), especially the content of rare metal molybdenum and arsenic is up to standard, waste residue after the processing can effectively utilize, whole retrieval and utilization productions, can save the water source, and zero discharge is realized.
Description
Technical field
This utility model relates to technical field of waste water processing, particularly relates to a kind of heavy metal waste water treatment system.
Background technology
Along with the exhaustion day by day of the poorest and each heavy metal species data of China's water resource, the rarest
The scarcity day by day of metal such as molybdenum etc., waste resource recycles and water resource recycles extremely urgent.
Along with the progress of science and technology is with fast-developing, the range of application of molybdenum and compound thereof is increasingly extensive,
Consumption is increasing, and limited Mo resource reduces increasingly.Therefore, the recycling to useless molybdenum has weight
Want meaning, and molybdenum smelted in factory production waste water containing heavy metal molybdenum, arsenic and some other heavy metal ion,
Heavy metal in waste water, molybdenum arsenic pollute becomes the great environmental problem being related to human health and life.So
Waste water as processed or deal with improperly directly discharge the most not in time, harm is very big, and the body of compatriots in serious harm
Body is healthy.If properly handled, the waste water fully recovering after process, and being possible not only to from waste water reclaim has
Valency metal, recycles garbage, it is also possible to saving water resource, promotes the well-being of mankind.
Especially, the arsenic compound in waste water has hypertoxicity to biology, can accumulate in human body, in causing
Poison.Shen Shi China implements one of important indicator of wastewater emission amount control, administers arsenic-containing waste water increasingly
Cause the attention of people.Its existing forms mainly has As3+And As5+Two kinds, wherein As3+Compare As5+Poison
Property is bigger.The method processing both at home and abroad arsenic-containing waste water is a lot, mainly have chemical precipitation method, absorption method, from
Sub-exchange process and membrane separation process etc..Absorption method can realize the advanced treating of waste water, but owing to cost is high,
The features, not yet popularization and application such as system is huge, troublesome poeration.Ion exchange is due to resin absorption capacity
Little, resin regeneration rate is low, the resin desorption time is long, long processing period, a large amount of uses of resin also increase
Processing cost, application is few in the Industrial Wastewater Treatment.Membrane separation process is the selective penetrated property utilizing film,
According to component each in multicomponent fluid selective difference of mass transfer in film, by higher external pressure, come real
Now to its separation, classification, purify or be enriched with.It is divided into microfiltration, ultrafiltration according to the big I of membrane aperture, receives
Filter and reverse osmosis.Process arsenic-containing waste water with NF membrane and hyperfiltration, arsenic removal can be made at ideal operating conditions
Rate reaches more than 90%, but significantly reduces due to easy blocking and arsenic removal efficiency in actual production, causes
Production is rarely employed.
At present, molybdenum concntrate uses the method for gasification furnace direct preparation of high-purity nanoscale molybdenum trioxide to have no industry
Report, is still in the pilot production stage, relates to the economy of its washing tail gas waste water, environmental protection and fully reclaim
The processing method of valuable metal in waste water is utilized to be also at the stage of fumbling.
The shortcoming of existing process containing heavy metal and arsenic wastewater is: waste water can not produce in success reuse after treatment；
Valuable metal in waste water can not fully recycle, and waste water produces the valuable metal recovery in waste residue and is stranded
Difficulty, cost recovery is high.
Utility model content
For the disadvantages mentioned above proposed in prior art, this utility model provides at a kind of heavy metal wastewater thereby
Reason system.
The heavy metal waste water treatment system that this utility model provides, including: the pH being sequentially connected adjusts
Joint pond, alkaline reaction pond, primary sedimentation basin, acid confined reaction pond, secondary sedimentation tank, neutralization reaction
Pond, three sedimentation tanks, the second pH regulator pond, ultrafiltration membrane filter device and neutralization pond.
Above-mentioned heavy metal waste water treatment system also has the following characteristics that
Described primary sedimentation basin, described secondary sedimentation tank and described three sedimentation tanks are provided with agitating device.
Above-mentioned heavy metal waste water treatment system also has the following characteristics that
Described primary sedimentation basin, described secondary sedimentation tank and described three sedimentation tanks are additionally provided with and stir with described
Mix the precipitation dehydration device that device is connected.
Above-mentioned heavy metal waste water treatment system also has the following characteristics that
Described precipitation dehydration device refers to filter press or centrifugal dehydrator.
Above-mentioned heavy metal waste water treatment system also has the following characteristics that
It is provided with hydrogen sulfide gas between described acid confined reaction pond and described alkaline reaction pond and absorbs dress
Put.
Above-mentioned heavy metal waste water treatment system also has the following characteristics that
Described hydrogen sulfide gas absorption plant is to use sodium hydroxide or sodium carbonate strong basicity chemical solvent absorption
The device that method absorbs.
Above-mentioned heavy metal waste water treatment system also has the following characteristics that
Described acid confined reaction pond is provided with agitating device.
Above-mentioned heavy metal waste water treatment system also has the following characteristics that
It is provided with between described alkaline reaction pond and primary sedimentation basin for connecting described alkaline reaction pond and institute
State the Pulp pump of primary sedimentation basin；Be provided with between described acid confined reaction pond and secondary sedimentation tank for
Connect described acid confined reaction pond and the Pulp pump of described secondary sedimentation tank；Described neutralization reaction tank and institute
State and be provided with between three sedimentation tanks for connecting described neutralization reaction tank and the slurry of described three sedimentation tanks
Pump.
Above-mentioned heavy metal waste water treatment system also has the following characteristics that
It is provided with blast aerator at described alkaline reaction pond and described neutralization reaction tank.
Above-mentioned heavy metal waste water treatment system also has the following characteristics that
Described first pH regulator pond and acid confined reaction pond are mounted on pH on-line detector.
Heavy metal waste water treatment system in this utility model passes through gasifier system for nanoscale three with molybdenum concntrate
Washing tail gas waste water produced by molybdenum oxide, for processing waste water, is settled by many secondary responses and multistep, and
Through ultrafiltration membrane filter device filter, make various heavy in waste water (include molybdenum, arsenic, chromium, nickel, chromium,
Numerous non-ferrous metal such as copper) the especially content of rare metal molybdenum and arsenic is up to standard, and the waste residue after process is permissible
Effectively utilizing, fully recovering produces, and can save water source, it is achieved zero-emission.
Accompanying drawing explanation
Fig. 1 is the structure chart of refinery effluent processing system in embodiment.
Specific embodiment
For making the purpose of this utility model embodiment, technical scheme and advantage clearer, below in conjunction with
Accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out clear,
It is fully described by, it is clear that described embodiment is a part of embodiment of this utility model rather than complete
The embodiment in portion.Based on the embodiment in this utility model, those of ordinary skill in the art are not making
The every other embodiment obtained under creative work premise, broadly falls into the scope of this utility model protection.
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can
With mutual combination in any.
Fig. 1 is the structure chart of refinery effluent processing system in embodiment.This system includes: be sequentially connected
The first pH regulator pond, alkaline reaction pond, primary sedimentation basin, acid confined reaction pond, secondary precipitation
Pond, neutralize reaction tank, three sedimentation tanks, the second pH regulator pond, ultrafiltration membrane filter device and neutralization pond.
Acid confined reaction pond is provided with agitating device, can promote reaction by the stirring of agitating device
Carry out.It is provided with hydrogen sulfide (H between acid confined reaction pond and alkaline reaction pond2S) GAS ABSORPTION dress
Put, acid confined reaction pond is reacted the gas of generation, after hydrogen sulfide absorption device absorbs, absorb
Sodium sulfide (the Na produced2S) for the reaction in alkaline reaction pond.This hydrogen sulfide absorption device is to use hydrogen
The device that sodium oxide or sodium carbonate strong basicity chemical solvent absorption method absorb.Acid confined reaction pond and alkalescence
The sulfide for reaction that reaction tank is added into refers to sodium sulfide or iron sulfide.
Primary sedimentation basin, secondary sedimentation tank and three sedimentation tanks are provided with agitating device and precipitation dehydration dress
Put.Agitating device is connected with precipitation dehydration device.Precipitation dehydration device refers to filter press or centrifugal
Dewaterer.The filtrate that precipitation dehydration device produces is again from flowing back to corresponding sedimentation tank.
It is provided with between alkaline reaction pond and primary sedimentation basin for connecting alkaline reaction pond and primary sedimentation basin
Pulp pump；It is provided with between acid confined reaction pond and secondary sedimentation tank for connecting acid confined reaction
Pond and the Pulp pump of secondary sedimentation tank；Neutralize and be provided with in connecting between reaction tank and three sedimentation tanks
With reaction tank and the Pulp pump of three sedimentation tanks.
It is provided with blast aerator at alkaline reaction pond and neutralization reaction tank.
First pH regulator pond is provided with pH on-line detector, according to the detected value control of pH on-line detector
The amount of the alkaline solution (such as sodium hydroxide) that system need to add, thus control in the first pH regulator pond
The pH value of liquid.Acid confined reaction pond is provided with pH on-line detector, according to pH on-line detector
Detected value, control the amount of acid solution (such as sulphuric acid) that need to add, thus control acid airtight instead
The pH value of Ying Chi.
The heavy metal waste water treatment system using this utility model to provide carry out the flow process of waste water process include with
Lower step:
Step 1, introduces the first pH regulator pond by molybdenum concntrate through the washes of gasification furnace distillation tail gas,
The pH value using alkaline solution (such as sodium hydroxide solution) to regulate the liquid in the first pH regulator pond is
After the scope of 7～9, insert the liquid into alkaline reaction pond, add sulfide (such as sodium sulfide or sulfuration Asia
Ferrum), course of reaction carries out blast aeration by blast aerator and (continues preset duration altogether, preferably
It is 20 minutes), after reaction preset duration (preferably 55 minutes), reacted liquid is passed through slag
Stock pump is transported to primary sedimentation basin, is stirred by agitating device, carries out mud by precipitation dehydration device
Slag precipitation and dewatering operation, after sedimentation preset duration (preferably 20 minutes), be delivered to acid by supernatant
Property confined reaction pond；Heavy Metals that this step 1 is mainly used in removing in waste water (include molybdenum, arsenic,
Numerous non-ferrous metals such as chromium, nickel, chromium, copper).
Step 2, the pH value adding acid solution regulation liquid in acid confined reaction pond is 2.2～2.8 models
After enclosing (preferably 2.5), add sulfide (such as sodium sulfide or Iron sulfuret .) and react, reaction
During carry out blast aeration (altogether continue preset duration, preferably 20 minutes) by blast aerator,
After reaction preset duration (preferably 55 minutes), reacted liquid is transported to secondary by Pulp pump
Sedimentation tank, is stirred by agitating device, carries out body refuse precipitation by precipitation dehydration device and dehydration is made
Industry, after sedimentation preset duration (preferably 20 minutes), is delivered to supernatant neutralize reaction tank；This step
Rapid 2 harmful substances containing molybdenum in emphasis removing waste water.
Step 3, neutralization pond by blast aerator carry out blast aeration (altogether continue preset duration,
It is preferably 40 minutes), reacted liquid is transported to three sedimentation tanks by Pulp pump, by stirring
Device is stirred, and carries out body refuse precipitation and dewatering operation by precipitation dehydration device, settles preset duration
After (preferably 20 minutes), supernatant is delivered to the 2nd PH regulating reservoir；This step 3 is used for emphasis
Remove the harmful substance containing arsenic in waste water.
Step 4, regulate the pH value of the liquid in the second pH regulator pond be in the range of 8～12 after, by liquid
Body input ultrafiltration membrane filter device, exports the water outlet of ultrafiltration membrane filter device to neutralization pond, according to production
Need to regulate the pH value of the water in neutralization pond, the water of neutralization pond is detected, carry when meeting the requirements
To production system, it is delivered to time undesirable neutralize reaction tank.
Above-mentioned flow process also includes: add solidifying in primary sedimentation basin, secondary sedimentation tank and three sedimentation tanks
Wadding agent (such as polyacrylamide and/or bodied ferric sulfate) also stirs 5～20 minutes (preferably 10 minutes).
Molybdenum concntrate by gasifier system for washing tail gas waste water produced by nanoscale molybdenum trioxide as process
Waste water, is in trial production stage by gasifier system for nanoscale molybdenum trioxide technique due to molybdenum concntrate at present,
There is no industrialization, thus the processing method of corresponding washing tail gas waste water belong to a kind of new process technique,
Its system is also new processing means.Heavy metal waste water treatment system in this utility model leads to molybdenum concntrate
Cross gasifier system for washing tail gas waste water produced by nanoscale molybdenum trioxide for processing waste water, by repeatedly
Reaction and multistep settle, and through ultrafiltration membrane filter device filter, make heavy metal in waste water (include molybdenum,
Numerous non-ferrous metals such as arsenic, chromium, nickel, chromium, copper) the especially content of rare metal molybdenum and arsenic is up to standard,
Waste residue after process can effectively utilize, and fully recovering produces, and can save water source, it is achieved zero-emission.
System in this utility model has the advantage that
1, after using multistep sedimentation and ultrafiltration membrane treatment, overcome NF membrane and hyperfiltration processes containing arsenic
Waste water holds susceptible to plugging process with micro-filtration membrane and contains high the lacking of heavy metal, molybdenum and arsenic waste water cost in smelting process
Point, the waste water produced in all production of successful cycles reuse, and have that processing cost is low, efficiency is high and makes
By advantages such as life-span length.
2, compared with twice conventional Coagulation with Treatment arsenic-containing waste water, although add primary first-order equation more and process
Process, but can effectively utilization process after valuable metal, shorten later use handling process, can produce show
The economic benefit write
3, the garbage containing heavy metal (such as copper), molybdenum and arsenic produced in system is without follow-up loaded down with trivial details
Separating treatment is able to regeneration and recycles, and has significant economic benefit；
4, use from refluxing design, there is energy-conservation advantage.
The advantage 5, with economy, environmental protection and practicality.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of its parts
Shape, be named title etc. can be different, and the above content described in this specification is only new to this practicality
Type structure example explanation.
Descriptions above can combine enforcement individually or in every way, and these modification
Mode is all within protection domain of the present utility model.
In this article, term " includes ", " comprising " or its any other variant are intended to nonexcludability
Comprise so that include that the article of a series of key element or equipment not only include those key elements, and
Also include other key elements being not expressly set out, or also include intrinsic for this article or equipment
Key element.In the case of there is no more restriction, statement " including ... " key element limited, do not arrange
Except there is also other identical element in the article including described key element or equipment.
Above example is only in order to illustrate the technical solution of the utility model and unrestricted, reference only to preferably
This utility model has been described in detail by embodiment.It will be understood by those within the art that, can
The technical solution of the utility model is modified or equivalent, without deviating from this utility model skill
The spirit and scope of art scheme, all should contain in the middle of right of the present utility model.
Claims (10)
1. a heavy metal waste water treatment system, it is characterised in that including: the pH being sequentially connected
Regulating reservoir, alkaline reaction pond, primary sedimentation basin, acid confined reaction pond, secondary sedimentation tank, neutralization are anti-
Ying Chi, three sedimentation tanks, the second pH regulator pond, ultrafiltration membrane filter device and neutralization pond.
2. the system as claimed in claim 1, it is characterised in that described primary sedimentation basin, institute
State secondary sedimentation tank and described three sedimentation tanks are provided with agitating device.
3. system as claimed in claim 2, it is characterised in that described primary sedimentation basin, institute
State secondary sedimentation tank and be additionally provided with, with described three sedimentation tanks, the precipitation being connected with described agitating device
Dehydration device.
4. system as claimed in claim 3, it is characterised in that described precipitation dehydration device is
Filter press or centrifugal dehydrator.
5. the system as claimed in claim 1, it is characterised in that described acid confined reaction pond
And it is provided with hydrogen sulfide gas absorption plant between described alkaline reaction pond.
6. system as claimed in claim 5, it is characterised in that described hydrogen sulfide gas absorbs
Device is the device using sodium hydroxide or sodium carbonate strong basicity chemical solvent absorption method to absorb.
7. the system as claimed in claim 1, it is characterised in that described acid confined reaction pond
It is provided with agitating device.
8. the system as claimed in claim 1, it is characterised in that described alkaline reaction pond and
It is provided with between secondary sedimentation tank for connecting described alkaline reaction pond and the slurry of described primary sedimentation basin
Pump；It is provided with for connecting described acidity close between described acid confined reaction pond and secondary sedimentation tank
Close reaction tank and the Pulp pump of described secondary sedimentation tank；Described neutralization reaction tank and described three precipitations
It is provided with between pond for connecting described neutralization reaction tank and the Pulp pump of described three sedimentation tanks.
9. the system as claimed in claim 1, it is characterised in that described alkaline reaction pond and institute
State and be provided with blast aerator at neutralization reaction tank.
10. the system as claimed in claim 1, it is characterised in that described first pH regulator pond
It is mounted on pH on-line detector with acid confined reaction pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620428638.XU CN205616685U (en) | 2016-05-12 | 2016-05-12 | Heavy metal waste water treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620428638.XU CN205616685U (en) | 2016-05-12 | 2016-05-12 | Heavy metal waste water treatment system |
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| Publication Number | Publication Date |
|---|---|
| CN205616685U true CN205616685U (en) | 2016-10-05 |
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| CN201620428638.XU Expired - Fee Related CN205616685U (en) | 2016-05-12 | 2016-05-12 | Heavy metal waste water treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111018194A (en) * | 2019-12-31 | 2020-04-17 | 南华大学 | Treatment and reuse method of nickel-molybdenum ore beneficiation wastewater |
-
2016
- 2016-05-12 CN CN201620428638.XU patent/CN205616685U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111018194A (en) * | 2019-12-31 | 2020-04-17 | 南华大学 | Treatment and reuse method of nickel-molybdenum ore beneficiation wastewater |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161005 |
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| CF01 | Termination of patent right due to non-payment of annual fee |