CN103043827A - Method for removing niobium from sewage - Google Patents
Method for removing niobium from sewage Download PDFInfo
- Publication number
- CN103043827A CN103043827A CN2012105954727A CN201210595472A CN103043827A CN 103043827 A CN103043827 A CN 103043827A CN 2012105954727 A CN2012105954727 A CN 2012105954727A CN 201210595472 A CN201210595472 A CN 201210595472A CN 103043827 A CN103043827 A CN 103043827A
- Authority
- CN
- China
- Prior art keywords
- niobium
- waste water
- water
- sewage
- conducted
- 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.)
- Granted
Links
Abstract
The invention discloses a method for removing niobium from sewage. The method comprises the steps that (1) flocculation precipitation is conducted on waste water containing niobium with polyaluminium chloride and polyacrylamide; (2) 8-10mg/L sodium sulfide solution and 10-15mg/L sodium phosphate solution are sequentially added to the precipitated waste water; pH is adjusted to 3.0-6.5; sufficient stirring is conducted at 100-450r/min to allow the reaction to be complete; (3) the waste water is precipitated for 15-20min in a precipitation tank, and then mud and water are separated; (4) effluent is lifted by a pump to an absorption tower, with a water flow mode of upward flow; and (5) the effluent waste water is the sewage with niobium completely removed, and the effluent is lower than a national Grade I emission standard. The method has the advantages that the method is conducted at a room temperature and is noise-free; used chemical agents are nontoxic, harmless and non-volatile; no new 'three wastes' are generated in a treatment process; heavy metal can be recycled; the raw materials are easy to obtain; the cost is lower; the niobium removal efficiency can reach above 99.9%.
Description
Technical field
The present invention relates to a kind for the treatment of process that contains niobium sewage, the removal of niobium belongs to field of waste water treatment in the environment protection in the industry waste water such as particularly plating, automobile and aviation, pigment, paint, printing.
Background technology
In recent years, niobium has a wide range of applications in industries such as plating, automobile and aviation, pigment, paint, printings, and the niobium waste water that contains that factory discharges is the primary pollution source that the water body niobium pollutes.The waste water (niobium content is up to 0.089mg/L) etc. of producing the technique eliminating such as phosphate fertilizer such as the waste water (niobium content is 0.065mg/L approximately) of electroplating industry, war production discharging and sulfuric acid ore extracting sulfuric acid, Rock Phosphate (72Min BPL) is particularly serious to water pollution.Therefore, the effective processing that contains niobium waste water is very urgent, and the processing research that contains niobium waste water of exploitation efficient economy has great society, economy and environment meaning.
The treatment process that at present removal commonly used contains niobium waste water has chemical precipitation method, electrolytic process, absorption method, ion exchange method.(1) chemical precipitation method is by to adding first sodium sulphite in the niobium waste water to containing, and niobium is precipitated out, and then adds bodied ferric sulfate, generates iron sulphide and ironic hydroxide, utilizes their cohesion and co-precipitation to arrive the purpose of removing niobium in the waste water.Although have the plurality of advantages such as technique is simple, easy to operate, economical and practical, its precipitation slag is difficult to process, and can cause secondary pollution.(2) electrolytic process is to adopt platinum family oxide compound or PbO
2Make anode, to destroy prussiate, then niobium ion flocculate under the condition of pH=11, precipitate, filter and remove niobium, the method energy consumption is large, so fails to be widely used in the processing that contains niobium waste water.(3) absorption method is to utilize the porousness solid matter, makes cadmium in the waste water+be adsorbed on the solid adsorbent surface and a kind of method of removing.The method is applied widely to containing niobium waste water, can not cause secondary pollution, but sorbent material is not high to the adsorption selectivity of niobium ion.(4) although the ion exchange method operating procedure simple, be easy to regeneration, except niobium effective.But this method is limited by the loading capacity of resin, be applicable to process contain the low waste water of niobium concentration, and resin is easy to poison, and processing cost is higher.
Therefore for overcoming the deficiencies in the prior art, the invention provides a kind for the treatment of process that contains niobium waste water, carry out at normal temperatures, noiselessness, used chemical agent is nontoxic, harmless, non-volatile, and treating processes does not produce new " three wastes ", heavy metal recoverable, medicament stock is easy to get, cost is lower, except niobium efficient up to 99.99% with first-class advantage.
Summary of the invention
The objective of the invention is provides a kind for the treatment of process that contains niobium waste water for overcoming the deficiencies in the prior art.The inventive method is carried out at normal temperatures, noiselessness, used chemical agent is nontoxic, harmless, non-volatile, and treating processes does not produce new " three wastes ", and emulsion can be recycled, the heavy metal recoverable, medicament stock is easy to get, cost is lower, except cadmium efficient up to 99.99% with first-class advantage, therefore, the inventive method application prospect is very wide.
The technical solution used in the present invention is:
(1) carries out flocculation sediment with polymerize aluminum chloride and polyacrylamide to containing niobium waste water;
(2) add successively 8～10mg/L sodium sulphite, 10～15mg/L sodium phosphate in the waste water after precipitation, be adjusted to pH to 3.0～6.5, fully stir with the rotating speed of 100～450r/min, make it to react completely;
(3) in settling tank, precipitate 15～20min after, mud-water separation;
(4) water outlet rises to adsorption tower with pump, and water flow mode is flow lifting type;
(5) waste water that flows out can be removed the niobium in the sewage fully, and water outlet can be lower than national grade one discharge standard.
Filler in the described adsorption tower is 80～100 purpose boiler slags.
Method of the present invention is compared the advantage and the effect that have with existing method:
(1) technical process is simple, medicament stock is easy to get, with low cost, easy to operate;
(2) carry out at normal temperatures, noiselessness, used chemical agent is nontoxic, harmless, non-volatile, and treating processes do not produce new " three wastes ",
(3) heavy metal recoverable;
(4) obvious processing effect, residual niobium ion concentration is lower than 0.08mg/L in the water after primary treatment, is lower than the first discharge standard of national regulation, and clearance is up to more than 99.9%;
Embodiment
The concrete steps of the inventive method are followed successively by:
(1) carries out flocculation sediment with polymerize aluminum chloride and polyacrylamide to containing niobium waste water;
(2) add successively 8～10mg/L sodium sulphite, 10～15mg/L sodium phosphate in the waste water after precipitation, be adjusted to pH to 3.0～6.5, fully stir with the rotating speed of 100～450r/min, make it to react completely;
(3) in settling tank, precipitate 15～20min after, mud-water separation;
(4) water outlet rises to adsorption tower with pump, and water flow mode is flow lifting type;
(5) waste water that flows out can be removed the niobium in the sewage fully, and water outlet can be lower than national grade one discharge standard.
Filler in the described adsorption tower is 80～100 purpose boiler slags.
The concrete application method of the present invention is: carry out flocculation sediment with polymerize aluminum chloride and polyacrylamide to containing niobium waste water, add successively 8～10mg/L sodium sulphite, 10～15mg/L sodium phosphate in the waste water after precipitation, be adjusted to pH to 3.0～6.5, rotating speed with 100～450r/min fully stirs, make it to react completely, in settling tank, precipitate 15～20min after, mud-water separation, water outlet rises to adsorption tower with pump, and water flow mode is flow lifting type; The waste water that flows out can be removed the niobium in the sewage fully, and water outlet can be lower than national grade one discharge standard.
Example 1
Carry out flocculation sediment with polymerize aluminum chloride and polyacrylamide to containing niobium waste water, add successively 8mg/L sodium sulphite, 10mg/L sodium phosphate in the waste water after precipitation, be adjusted to pH to 3.0, rotating speed with 100r/min fully stirs, make it to react completely, in settling tank the precipitation 15min after, mud-water separation, water outlet rises to adsorption tower with pump, and water flow mode is flow lifting type; The waste water that flows out can be removed the niobium in the sewage fully, and water outlet niobium concentration has dropped to 0.06mg/L, and the niobium clearance has reached 99.99%.
Example 2
Carry out flocculation sediment with polymerize aluminum chloride and polyacrylamide to containing niobium waste water, add successively 10mg/L sodium sulphite, 15mg/L sodium phosphate in the waste water after precipitation, be adjusted to pH to 6.5, rotating speed with 450r/min fully stirs, make it to react completely, after in settling tank, precipitating 20min, mud-water separation, water outlet rises to adsorption tower with pump, water flow mode is flow lifting type, the waste water that flows out can be removed the niobium in the sewage fully, and water outlet niobium concentration has dropped to 0.05mg/L, and the niobium clearance has reached 99.98%.
Example 3
Carry out flocculation sediment with polymerize aluminum chloride and polyacrylamide to containing niobium waste water, add successively 9mg/L sodium sulphite, 13mg/L sodium phosphate in the waste water after precipitation, be adjusted to pH to 5.0, rotating speed with 300r/min fully stirs, make it to react completely, after in settling tank, precipitating 18min, mud-water separation, water outlet rises to adsorption tower with pump, water flow mode is flow lifting type, the waste water that flows out can be removed the niobium in the sewage fully, and water outlet niobium concentration has dropped to 0.02mg/L, and the niobium clearance has reached 99.98%.
Claims (2)
1. method of removing niobium in the sewage, it is characterized in that: carry out flocculation sediment with polymerize aluminum chloride and polyacrylamide to containing niobium waste water, add successively 8～10mg/L sodium sulphite, 10～15mg/L sodium phosphate in the waste water after the precipitation, fully stir, make it to react completely, after in settling tank, precipitating, mud-water separation, water outlet rises to adsorption tower with pump, and water flow mode is flow lifting type, and the waste water of outflow can be removed the niobium in the sewage fully.
2. a kind of method of removing niobium in the sewage according to claim 1 is characterized in that: the filler in the described adsorption tower is 80～100 purpose boiler slags.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210595472.7A CN103043827B (en) | 2012-12-07 | 2012-12-07 | Method for removing niobium from sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210595472.7A CN103043827B (en) | 2012-12-07 | 2012-12-07 | Method for removing niobium from sewage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103043827A true CN103043827A (en) | 2013-04-17 |
| CN103043827B CN103043827B (en) | 2014-05-07 |
Family
ID=48056719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210595472.7A Expired - Fee Related CN103043827B (en) | 2012-12-07 | 2012-12-07 | Method for removing niobium from sewage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103043827B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111018038A (en) * | 2019-12-26 | 2020-04-17 | 浙江伊诺环保科技股份有限公司 | Heavy metal trapping agent and preparation process thereof |
| CN112811658A (en) * | 2020-12-29 | 2021-05-18 | 江西挺进环保科技有限公司 | Electroplating sewage treatment method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5976383A (en) * | 1991-04-08 | 1999-11-02 | Romar Technologies, Inc. | Recycle process for removing dissolved heavy metals from water with aluminum particles |
| CN101088938A (en) * | 2007-06-29 | 2007-12-19 | 东莞东运机械制造有限公司 | Process of treating heavy metal containing sewage |
| CN102642991A (en) * | 2012-04-28 | 2012-08-22 | 南京大学 | Efficient combination advanced treatment method for electroplating wastewater |
| CN102786171A (en) * | 2012-08-28 | 2012-11-21 | 山东同大镍网有限公司 | Comprehensive treatment process and device for electroplating wastewater containing heavy metal ions, Cr6+, Cu2+ and Ni2+ |
-
2012
- 2012-12-07 CN CN201210595472.7A patent/CN103043827B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5976383A (en) * | 1991-04-08 | 1999-11-02 | Romar Technologies, Inc. | Recycle process for removing dissolved heavy metals from water with aluminum particles |
| CN101088938A (en) * | 2007-06-29 | 2007-12-19 | 东莞东运机械制造有限公司 | Process of treating heavy metal containing sewage |
| CN102642991A (en) * | 2012-04-28 | 2012-08-22 | 南京大学 | Efficient combination advanced treatment method for electroplating wastewater |
| CN102786171A (en) * | 2012-08-28 | 2012-11-21 | 山东同大镍网有限公司 | Comprehensive treatment process and device for electroplating wastewater containing heavy metal ions, Cr6+, Cu2+ and Ni2+ |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111018038A (en) * | 2019-12-26 | 2020-04-17 | 浙江伊诺环保科技股份有限公司 | Heavy metal trapping agent and preparation process thereof |
| CN112811658A (en) * | 2020-12-29 | 2021-05-18 | 江西挺进环保科技有限公司 | Electroplating sewage treatment method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103043827B (en) | 2014-05-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102603097B (en) | Advanced treatment and recycling process for wastewater containing heavy metal ions | |
| CN107337292B (en) | Process flow for deeply treating desulfurization wastewater | |
| CN103011464B (en) | Treatment method of stibium-containing wastewater | |
| CN106865920A (en) | Deep treatment method and reuse technology containing acid waste water containing heavy metal ions | |
| CN102942270B (en) | Technology for deeply treating and recycling biochemical effluent of coking wastewater | |
| CN103922524B (en) | Advanced treatment method for coking wastewater | |
| CN103951114B (en) | A kind of heavy metal wastewater thereby tertiary treatment and deep purifying reuse technology | |
| CN101817575A (en) | Electric flocculation method and device for recovering and processing desulfurized wastewater | |
| CN104909511A (en) | Coating wastewater treatment method | |
| CN103172218B (en) | Method and device for recovery and purifying elemental sulfur from high-concentration sulfate wastewater | |
| CN104108814B (en) | A kind of method processing Rutile type Titanium Dioxide waste water | |
| CN104445550A (en) | Preparation method of heavy metal sewage treatment medicament | |
| CN204079666U (en) | One is applied to shale gas recirculation water circulation and stress treatment unit | |
| CN105060604A (en) | Purification process for coal fired power plant desulphurization sewage | |
| CN102627366A (en) | Method for treating vanadium pentoxide wastewater and circularly utilizing resources | |
| CN1104384C (en) | Control method of waste water containing chromium | |
| CN104005050B (en) | In Electrolytic Manganese Wastewater, bivalent manganese is processed reuse method | |
| CN105601021A (en) | Treatment method of heavy metal waste water | |
| CN109179782B (en) | Device and method for treating desulfurization wastewater by utilizing active ferrite microcrystal | |
| CN102976434B (en) | Method for treating lead-containing wastewater | |
| CN103043827B (en) | Method for removing niobium from sewage | |
| CN112062343A (en) | MAP method-based harmless recycling treatment method for phosphogypsum yard leachate | |
| CN103771629A (en) | Pretreatment technology of hot-galvanizing wastewater | |
| CN107381705B (en) | Method for separating and recovering multiple cationic heavy metals in water through phase change regulation | |
| CN105502736A (en) | Metallurgical wastewater treatment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20140507 Termination date: 20141207 |
|
| EXPY | Termination of patent right or utility model |