CN106315743B - A kind of technique using flyash processing heavy metal wastewater thereby - Google Patents
A kind of technique using flyash processing heavy metal wastewater thereby Download PDFInfo
- Publication number
- CN106315743B CN106315743B CN201610962175.XA CN201610962175A CN106315743B CN 106315743 B CN106315743 B CN 106315743B CN 201610962175 A CN201610962175 A CN 201610962175A CN 106315743 B CN106315743 B CN 106315743B
- Authority
- CN
- China
- Prior art keywords
- heavy metal
- flyash
- metal wastewater
- reactor
- added
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention provides a kind of techniques using fly ash highly processing heavy metal wastewater thereby, include the following steps: that (1) starts；(2) dosing；(3) it intakes；(4) water outlet can be continuously obtained by repeating step (2) and step (3) again.For technique of the present invention using fly ash highly absorption heavy metal compared with existing absorbing process, when reaching identical heavy metal treatment effect, flyash dosage can reduce 20% or more, and then can save 20% or more treatment agent cost.Meanwhile it is the simple process, easy to operate, convenient for promoting and implementing.
Description
Technical field
The invention belongs to sewage treatment fields, more particularly, to a kind of work using fly ash highly processing heavy metal wastewater thereby
Skill.
Background technique
With the rapid development of industry and the concentration of urban population, the discharge amount of heavy metal wastewater thereby is increasing, however weight
Metallic pollution cannot be eliminated by the degradation of biology, therefore cause serious threat to water environment for the survival of mankind.
The method of common heavy metals removal includes gas floatation process, the precipitation method, electrochemical process, electroosmose process, embrane method, is centrifuged exchange process, is true
Empty way of distillation etc..But there is drawback in these methods, such as pretreatment is complicated, cumbersome, and especially added amount of chemical is big, causes
Processing cost is expensive, comes to out tape difficult.
In the existing technique using Heavymetal Wastewater Treatment by Adsorption, adsorbent enters simultaneously with heavy metal wastewater thereby to react
Device after the completion of adsorption reaction, adds new adsorbent again, and old adsorbent is considered as discarded.Therefore adsorbent in the process
Adsorption capacity utilization rate it is low, cause the usage amount of adsorbent big, the production cost increases.
Summary of the invention
In view of this, the present invention is directed to propose a kind of technique using fly ash highly processing heavy metal wastewater thereby, the technique
The bottleneck that adsorbent adsorption capacity utilization rate is low in existing absorbing process is breached, new and effective adsorption technology is used, is improved
The utilization rate of adsorbent adsorption capacity.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of technique using fly ash highly processing heavy metal wastewater thereby, comprising the following steps:
(1) start: heavy metal wastewater thereby and flyash being added into reactor, stirring reaches heavy metal wastewater thereby with flyash
Adsorption equilibrium；
(2) dosing: being added flyash into reactor again, and stirring reaches adsorption equilibrium and is discharged, is then discharged out
Part is discharged；
(3) it intakes: supplementing heavy metal wastewater thereby in the reactor being discharged to step (2) discharge part, stirring reaches suction
Attached balance obtains pretreated water；
(4) water outlet can be continuously obtained by the pretreated water that step (3) obtains being repeated step (2) and step (3) again；
Wherein, the heavy metal that the water outlet volume and step (1) being discharged in step (2) reactor are added into reactor
The volume ratio of waste water is R, and the value range of the R is 0 < R < 1；The quality and step for the flyash being added in the step (2)
Suddenly the mass ratio that flyash is added in (1) is R.
Further, heavy metal wastewater thereby is added in the volume of the heavy metal wastewater thereby supplemented in the step (3) and step (1)
Volume ratio be R.
Further, water outlet is discharged from reactor by separation by precipitation in the step (2).
Further, the temperature of the step (2) and the adsorption process in step (3) is 10-40 DEG C.
Further, the flyash includes following weight percentage components: SiO2: 52.87%；Al2O3:
24.19%；Fe2O3: 8.33%；CaO:3.67%；K2O:1.45%；MgO:1.03%；SO3: 0.77%；TiO2: 0.74%；
Impurity: 6.95%.
Further, the pH value of the heavy metal wastewater thereby is 3.0-6.9.
The present invention having the beneficial effect that compared with the existing technology
Using technical solutions according to the invention, compared with existing treatment process, reaching identical heavy metal processing effect
When fruit, flyash dosage can reduce 20% or more, and then can save 20% or more treatment agent cost.Meanwhile the simple process,
It is easy to operate, convenient for promoting and implementing.
Specific embodiment
Unless otherwise stated, term used herein all has the meaning that those skilled in the art routinely understand, in order to
It is easy to understand the present invention, some terms used herein have been subjected to following definitions.
All number marks, such as pH, temperature, time, concentration, including range, are all approximations.It is to be understood that although
Term " about " is all added before always not describing all number marks explicitly.While it will also be understood that, although always not clear
Narration, reagent described herein is only example, and equivalent is known in the art.
Below with reference to embodiment, the present invention will be described in detail.
Flyash used in embodiment 1, embodiment 2 and comparative example by forming following weight percentage components: SiO2:
52.87%；Al2O3: 24.19%；Fe2O3: 8.33%；CaO:3.67%；K2O:1.45%；MgO:1.03%；SO3:
0.77%；TiO2: 0.74%；Impurity: 6.95%.
Embodiment 1
A kind of technique using fly ash highly processing heavy metal wastewater thereby, comprising the following steps:
(1) start: first into reactor be added pH value be 6.2, the huge sum of money that the concentration of volume 1L, nickel is 10.07mg/L
Belong to waste water and quality for the flyash of 4g, stirring makes its absorption reach balance；
(2) dosing: after the flyash that quality is 1.6g is added into reactor, stirring reaches absorption and reaches balance,
The concentration for obtaining nickel is the water outlet of 0.47mg/L, and then by separation by precipitation, displaced volume is going out for 0.4L from reactor
Water；
(3) intake: into reactor supplement volume be 0.4L, the heavy metal wastewater thereby that the concentration of nickel is 10.07mg/L, at this time
The concentration of nickel is 4.31mg/L in reactor, continues to carry out adsorption reaction with the flyash added in step (2), it is flat to reach absorption
The concentration that nickel is obtained after weighing apparatus is the pretreated water of 1.2mg/L；
(4) pretreated water that the concentration for the nickel for obtaining step (3) is 1.2mg/L repeats step (2) and step again
(3) concentration that can be continuously obtained nickel is the water outlet of 0.47mg/L.
Wherein, the temperature of the step (2) and the adsorption reaction in step (3) is 25 DEG C.
Embodiment 2
A kind of technique using fly ash highly processing heavy metal wastewater thereby, comprising the following steps:
(1) start: first into reactor be added pH value be 6.2, the huge sum of money that the concentration of volume 1L, nickel is 10.07mg/L
Belong to waste water and quality for the flyash of 3.6g, stirring makes its absorption reach balance；
(2) dosing: after the flyash that quality is 2.52g is added into reactor, stirring reaches absorption and reaches balance,
The concentration for obtaining nickel is the water outlet of 0.48mg/L, and then by separation by precipitation, displaced volume is going out for 0.7L from reactor
Water；
(3) intake: into reactor supplement volume be 0.7L, the heavy metal wastewater thereby that the concentration of nickel is 10.07mg/L, at this time
The concentration of nickel is 7.19mg/L in reactor, continues that adsorption reaction occurs with the flyash added in step (2), it is flat to reach absorption
The concentration that nickel is obtained after weighing apparatus is the pretreated water of 1.5mg/L；
(4) pretreated water that the concentration for the nickel for obtaining step (3) is 1.5mg/L repeats step (2) and step again
(3) concentration that can be continuously obtained nickel is the water outlet of 0.48mg/L.
Wherein, the temperature of the step (2) and the adsorption reaction in step (3) is 25 DEG C.
Embodiment 3
A kind of technique using fly ash highly processing heavy metal wastewater thereby, comprising the following steps:
(1) start: first into reactor be added pH value be 6.0, the huge sum of money that the concentration of volume 1L, copper is 10.01mg/L
Belong to waste water and quality for the flyash of 3.9g, stirring makes its absorption reach balance；
(2) dosing: after the flyash that quality is 1.95g is added into reactor, stirring reaches absorption and reaches balance,
The concentration for obtaining copper is the water outlet of 0.45mg/L, and then by separation by precipitation, displaced volume is going out for 0.5L from reactor
Water；
(3) intake: supplemented into reactor volume be 0.5L, the waste water that the concentration of copper is 10.01mg/L, reactor at this time
The concentration of interior copper is 5.23mg/L, continues to carry out adsorption reaction with the flyash added in step (2), obtain after reaching adsorption equilibrium
The pretreated water that concentration to copper is 1.5mg/L；
(4) pretreated water that the concentration for the copper for obtaining step (3) is 1.5mg/L repeats step (2) and step again
(3) concentration that can be continuously obtained copper is the water outlet of 0.45mg/L.
Wherein, the temperature of the step (2) and the adsorption reaction in step (3) is 25 DEG C.
Embodiment 4
A kind of technique using fly ash highly processing heavy metal wastewater thereby, comprising the following steps:
(1) start: first into reactor be added pH value be 6.0, the huge sum of money that the concentration of volume 1L, copper is 10.01mg/L
Belong to waste water and quality for the flyash of 3.5g, stirring makes its absorption reach balance；
(2) dosing: after the flyash that quality is 2.8g is added into reactor, stirring reaches absorption and reaches balance,
The concentration for obtaining copper is the water outlet of 0.46mg/L, and then by separation by precipitation, displaced volume is going out for 0.8L from reactor
Water；
(3) intake: into reactor supplement volume be 0.8L, the heavy metal wastewater thereby that the concentration of copper is 10.01mg/L, at this time
The concentration of copper is 8.1mg/L in reactor, continues that adsorption reaction occurs with the flyash added in step (2), it is flat to reach absorption
The concentration that copper is obtained after weighing apparatus is the pretreated water of 1.7mg/L；
(4) pretreated water that the concentration for the copper for obtaining step (3) is 1.7mg/L repeats step (2) and step again
(3) concentration that can be continuously obtained copper is the water outlet of 0.46mg/L.
Wherein, the temperature of the step (2) and the adsorption reaction in step (3) is 25 DEG C.
Comparative example 1
A kind of technique using flyash processing heavy metal wastewater thereby, comprising the following steps: pH value, which is added, into reactor is
6.2, volume 1L, nickel concentration be 10.07mg/L heavy metal wastewater thereby and quality be 5g flyash, stirring make its absorption
The water outlet that the concentration of nickel is 0.48mg/L is obtained after reaching balance.
Comparative example 2
A kind of technique using flyash processing heavy metal wastewater thereby, comprising the following steps: pH value, which is added, into reactor is
6.0, volume 1L, copper concentration be 10.01mg/L heavy metal wastewater thereby and quality be 5g flyash, stirring make its absorption
The water outlet that the concentration of copper is 0.45mg/L is obtained after reaching balance.
By embodiment 1,2 with comparative example 1 as it can be seen that nickeliferous heavy metal wastewater thereby concentration is identical, using technique of the invention, when
When the dosage of flyash is respectively 4g/L and 3.6g/L, it can reach and use existing treatment process flyash dosage for 5g/L
When treatment effect, flyash dosage saves 20% and 28% respectively.
By embodiment 3,4 with comparative example 2 as it can be seen that cupric heavy metal wastewater thereby concentration is identical, using technique of the invention, when
When the dosage of flyash is respectively 3.9g/L and 3.5g/L, can reach with use existing treatment process flyash dosage for
Treatment effect when 5g/L, flyash dosage save 22% and 30% respectively.
By embodiment 1,2,3,4 as it can be seen that using technique of the invention than prior art save 20%~30% powder
Coal ash.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (5)
1. it is a kind of using flyash processing heavy metal wastewater thereby technique, it is characterised in that: the technique the following steps are included:
(1) start: heavy metal wastewater thereby and flyash being added into reactor, stirring makes heavy metal wastewater thereby and flyash reach absorption
Balance；
(2) dosing: being added flyash into reactor again, and stirring reaches adsorption equilibrium and is discharged, and is then discharged out part
Water outlet；
(3) it intakes: supplementing heavy metal wastewater thereby in the reactor being discharged to step (2) discharge part, it is flat that stirring reaches absorption
Weighing apparatus obtains pretreated water；
(4) water outlet can be continuously obtained by the pretreated water that step (3) obtains being repeated step (2) and step (3) again；
Wherein, the volume for the heavy metal wastewater thereby that volume is added with step (1) into reactor is discharged in step (2) reactor
Than being 0 < R < 1 for the value range of R, the R；It is added in the quality for the flyash being added in the step (2) and step (1)
The mass ratio of flyash is R；
The flyash includes following weight percentage components: SiO2: 52.87%；Al2O3: 24.19%；Fe2O3: 8.33%；
CaO:3.67%；K2O:1.45%；MgO:1.03%；SO3: 0.77%；TiO2: 0.74%；Impurity: 6.95%.
2. the technique according to claim 1 using flyash processing heavy metal wastewater thereby, it is characterised in that: the step
(3) volume ratio that heavy metal wastewater thereby is added in the volume of the heavy metal wastewater thereby supplemented in and step (1) is R.
3. the technique according to claim 1 using flyash processing heavy metal wastewater thereby, it is characterised in that: the step
(2) water outlet in is discharged from reactor by separation by precipitation.
4. the technique according to claim 1 or 2 using flyash processing heavy metal wastewater thereby, it is characterised in that: the step
Suddenly the temperature of (2) and the adsorption process in step (3) is 10-40 DEG C.
5. the technique according to claim 1 using flyash processing heavy metal wastewater thereby, it is characterised in that: the heavy metal
The pH value of waste water is 3.0-6.9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610962175.XA CN106315743B (en) | 2016-11-04 | 2016-11-04 | A kind of technique using flyash processing heavy metal wastewater thereby |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610962175.XA CN106315743B (en) | 2016-11-04 | 2016-11-04 | A kind of technique using flyash processing heavy metal wastewater thereby |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106315743A CN106315743A (en) | 2017-01-11 |
| CN106315743B true CN106315743B (en) | 2019-07-23 |
Family
ID=57815928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610962175.XA Expired - Fee Related CN106315743B (en) | 2016-11-04 | 2016-11-04 | A kind of technique using flyash processing heavy metal wastewater thereby |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106315743B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727561B (en) * | 2017-10-11 | 2020-11-06 | 合肥学院 | Test method for industrial and agricultural wastes to inhibit heap acidification of alum ore waste stones |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103880113A (en) * | 2014-04-14 | 2014-06-25 | 北京矿冶研究总院 | Method for circularly treating heavy metal ion wastewater by using modified fly ash |
| CN105060570A (en) * | 2015-08-28 | 2015-11-18 | 尚鼎炉业科技（扬州）有限公司 | Process for sewage treatment by means of activated carbon adsorption equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8535422B2 (en) * | 2009-01-26 | 2013-09-17 | St. Cloud Mining Company | Metal contaminant removal compositions and methods for making and using the same |
-
2016
- 2016-11-04 CN CN201610962175.XA patent/CN106315743B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103880113A (en) * | 2014-04-14 | 2014-06-25 | 北京矿冶研究总院 | Method for circularly treating heavy metal ion wastewater by using modified fly ash |
| CN105060570A (en) * | 2015-08-28 | 2015-11-18 | 尚鼎炉业科技（扬州）有限公司 | Process for sewage treatment by means of activated carbon adsorption equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106315743A (en) | 2017-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102258981B (en) | Method for preparing magnetic chitosan nano particles and processing heavy metal wastewater | |
| Wu et al. | Selective separation of Cr (VI) and V (V) from solution by simple pH controlled two-step adsorption/desorption process with ZrO2 | |
| CN102531233B (en) | Heavy-metal-containing electroplating wastewater treatment and heavy metal recycling method | |
| He et al. | Removal of vanadium from vanadium-containing wastewater by amino modified municipal sludge derived ceramic | |
| CN106076261A (en) | A kind of adsorbent for heavy metal and preparation method and application | |
| CN114870818B (en) | Method for adsorbing and separating gold, platinum and palladium by using polyion liquid gel adsorbent | |
| CN108947021A (en) | A kind of method of iron-based oxide Solid state fermentation waste acid | |
| CN106315743B (en) | A kind of technique using flyash processing heavy metal wastewater thereby | |
| CN101343102A (en) | Adsorption and magnetic separation coupling method for recycling precious metal ion in precious metal | |
| CN104001475B (en) | Tourmaline/scion grafting modification sulfur-bearing Graphene composite adsorbing material and preparation method thereof | |
| CN109052543A (en) | A kind of method of noble silver in recycling waste water | |
| CN112973618B (en) | Layered metal sulfide adsorbent, preparation method thereof and method for selectively enriching lead ions from heavy metal wastewater | |
| Uchikoshi et al. | Preparation of high-purity cobalt by anion-exchange separation and plasma arc melting | |
| CN106693911A (en) | Functionalized silica adsorbent and application thereof in enrichment of silver ions in chlorinated wastewater | |
| Juang et al. | Separation of zinc and copper from aqueous sulfate solutions using bis (2-ethylhexyl) phosphoric acid-impregnated macroporous resin | |
| CN102976465A (en) | Method for degrading polyacrylamide in sewage | |
| CN109179800A (en) | A method of removal rare earth extraction heavy metal in waste water | |
| CN104986898B (en) | A kind of method and device of normal temperature ferrite circular treatment heavy metal containing sewage | |
| CN103771422A (en) | Method of co-preparing white carbon black and polymerized aluminum trichloride from oil-refining waste catalysts | |
| CN109550487A (en) | A kind of processing method using stable cadmium adsorbent | |
| CN108439633A (en) | A method of the fluorine-containing uranium-containing waste water of processing high alkalinity simultaneously recycles uranium | |
| CN104496000B (en) | Method for removing and recycling arsenic and antimony in water body by copper powder replacement | |
| Bozorov et al. | Investigation of the sorption method of processing molybdenum-containing raw materials to extract rare metals | |
| Babarinde et al. | Kinetic, isotherm and thermodynamic studies of the biosorption of zinc (II) from solution by maize wrapper | |
| CN106215851A (en) | The preparation method and applications of the nano aluminium oxide that a kind of cupferron is modified |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190618 Address after: No. 5340 Xiping Road, Beichen District, Tianjin 300401 Applicant after: Hebei University of Technology Address before: Room 601, Building 5, No. 2, Haitai Development Road, No. 2, Huayuan Industrial Zone, Tianjin Binhai New Area, 300384 Applicant before: TIANJIN CENTURY ENVIRONMENT ENGINEERING CO.,LTD. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190723 Termination date: 20211104 |