CN1899977B - Processing and utilizing method for tail water after extracting vanadium and precipitating vanadium from stone coal - Google Patents
Processing and utilizing method for tail water after extracting vanadium and precipitating vanadium from stone coal Download PDFInfo
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- CN1899977B CN1899977B CN200610031914XA CN200610031914A CN1899977B CN 1899977 B CN1899977 B CN 1899977B CN 200610031914X A CN200610031914X A CN 200610031914XA CN 200610031914 A CN200610031914 A CN 200610031914A CN 1899977 B CN1899977 B CN 1899977B
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- vanadium
- tail water
- stone coal
- lime
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Abstract
The process of treating and reusing stone coal tail water after extracting vanadium includes the following steps: regulating pH of the tail water to 9-12 with alkali, blowing out ammonia with blower for 16-20 hr, returning the supernatant for pelletizing stone coal and/or spraying the supernatant into lime, heating the slaked lime to 300-400 deg.c and igniting to eliminate ammonia, returning ammonium chloride to vanadium precipitating section, and using the ammonium eliminating lime as vanadium extracting material. The process is simple and low in cost, and has effective utilization of waste water, capacity of recovering matter from waste water and environment friendship.
Description
Technical field: the present invention relates to a kind of processing of extracting vanadium from stone coal ammonia nitrogen waste water and utilize method.
Background technology: in the precipitation operation of extracting vanadium from stone coal, NaVO
3The aqueous solution adds NH
4Cl reacts, and generates throw out NH
4VO
3, and water is precipitation tail water, and containing ammonia nitrogen concentration is 9000mg/L, and since adopting extracting vanadium from stone coal to produce, Ceng Wei has the people to carry out any processing, and directly waste water effluxes.NH
3The dense waste water of-N directly effluxes, and can make to be subjected to the sodium body eutrophication, ecotope is caused have a strong impact on, and ammonia nitrogen enters human body can synthesize nitroso compound, thereby brings out canceration.Along with country strengthens the protection of resource and environment, ammonia oxygen discharge of wastewater is listed in environmental monitoring discharging scope, it allows discharge index is NH
3-N15mg/L.Existing NH
3-N method for treating wastewater has methods such as biochemical process, chemization, physics method.Because the NH of extracting vanadium from stone coal tail water
3-N concentration height, and with inorganic ammonium ion (NH
4 -) and free ammonia (NH
3) state exist, waste water COD cr is very low, thereby if adopts biochemical process must add the former investment of a large amount of carbon and working cost can be very big.Chemical method has break point chlorination, chemical precipitationization, ion exchange method, but complicated operation, control requires high, and equipment and medicament expense are big, the running cost height.The usefulness that has adds in the alkali and ammonia nitrogen waste water, but ammonia nitrogen waste water and sediment after the neutralization still must discharge.Therefore, these methods are not suitable for the processing and the utilization of extracting vanadium from stone coal tail water.
Summary of the invention: the object of the present invention is to provide a kind of simple possible, processing costs is low, tail water can be effective to the processing of the tail water after extracting vanadium and precipating vanadium from stone coal vanadium extraction production technique, that can avoid causing environmental pollution and utilize method.
One of technical solution of the present invention is: a kind of processing of tail water after extracting vanadium and precipating vanadium from stone coal and utilize method, its special character is: precipitation tail water is injected special-purpose pond add adjusting PH with base value to 9～12, dried 16～20 hours in the precipitation tail water of tone pitch with blower fan, with the ammonia stripping, then supernatant liquor is sent to the flat kiln of extracting vanadium from stone coal roasting system ball section and is used as system ball water.A small amount of recrement is used to make the ball additive.Alkali adopts NaOH or lime.
Two of technical solution of the present invention is: a kind of processing of tail water after extracting vanadium and precipating vanadium from stone coal and utilize method, its special character is 0.9～1 part precipitation tail water is sprayed in 1 part the unslaked lime, after treating whole slakings, with the white lime that generates 300 ℃～400 ℃ calcination deaminations of heating, the ammonia chloride gas recovery send precipitation workshop section to utilize, and deamination white lime is sent in the breeze balling-up section adding original ore powder and does vanadium extraction sulphur-fixing agent and additive.
The present invention is owing to adopted above technical scheme, and it is simple to have operation, and processing costs is low, and the waste water of processing can effectively be used in vanadium extraction production, has avoided the pollution of precipitation tail water to environment.
Description of drawings: accompanying drawing is a process flow sheet of the present invention.
Embodiment: the present invention is further illustrated below in conjunction with specific embodiment.Embodiment one: a kind of processing of tail water after extracting vanadium and precipating vanadium from stone coal and utilize method, precipitation tail water is injected special-purpose pond, adds lime or alkali and transfer to pH value to 11, with roots blower with the ammonia stripping, time is sent to extracting vanadium from stone coal system ball section with supernatant liquor and is used to make ball after being 18 hours.Embodiment two: a kind of processing of tail water after extracting vanadium and precipating vanadium from stone coal and utilize method, ratio in tail water and unslaked lime weight ratio 0.9～1: 1 sprays into unslaked lime with tail water earlier, after treating whole slakings, with the white lime that changes in converter under about 400 ℃ of temperature calcination remove ammonium chloride, reclaim ammonium chloride gas with the getter tower and send precipitation workshop section to utilize, white lime is as vanadium extraction sulphur-fixing agent and additive.Embodiment three, a kind of processing of tail water after extracting vanadium and precipating vanadium from stone coal and utilize way, precipitation tail water one tunnel is sprayed into unslaked lime in the ratio of tail water and unslaked lime weight ratio 0.9～1: 1 with tail water, after treating whole slakings, with the white lime that changes in converter under about 400 ℃ of temperature calcination remove ammonium chloride, reclaim ammonium chloride gas with the getter tower and send precipitation workshop section to utilize, white lime is as vanadium extraction sulphur-fixing agent and additive.Special-purpose pond is injected with precipitation tail water in another road, adds lime or alkali and transfers to pH value to 11, and with the ammonia stripping, the time is sent to extracting vanadium from stone coal system ball section with supernatant liquor and is used to make ball after being 18 hours with roots blower.
Claims (3)
1. the processing of a tail water after extracting vanadium and precipating vanadium from stone coal and utilize method, it is characterized in that: the precipitation tail water of 0.9～1 weight part is sprayed in 1 part the unslaked lime, after treating whole slakings, with the white lime that generates 300 ℃～400 ℃ calcination deaminations of heating, the ammonium chloride gas recovery send precipitation workshop section to utilize, and the white lime of deamination is sent in the breeze balling-up section adding original ore powder and does vanadium extraction sulphur-fixing agent and additive.
2. the processing of a kind of tail water after extracting vanadium and precipating vanadium from stone coal according to claim 1 and utilize method is characterized in that: the white lime that generates is heated in converter to 400 ℃ of calcination deaminations.
3. the processing of a tail water after extracting vanadium and precipating vanadium from stone coal and utilize method, it is characterized in that: precipitation tail water one tunnel is sprayed into unslaked lime in the ratio of tail water and unslaked lime weight ratio 0.9～1: 1 with tail water, after treating whole slakings, with the white lime that changes in converter under 400 ℃ of temperature calcination remove ammonium chloride, reclaiming ammonium chloride gas with the getter tower send precipitation workshop section to utilize, white lime is as vanadium extraction sulphur-fixing agent and additive, another road is injected special-purpose pond and is added adjusting PH with base value to 9～12, dried 16～20 hours in the precipitation tail water of tone pitch with blower fan, with the ammonia stripping, then supernatant liquor is sent to the flat kiln of extracting vanadium from stone coal roasting system ball section and is used as system ball water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610031914XA CN1899977B (en) | 2006-07-01 | 2006-07-01 | Processing and utilizing method for tail water after extracting vanadium and precipitating vanadium from stone coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610031914XA CN1899977B (en) | 2006-07-01 | 2006-07-01 | Processing and utilizing method for tail water after extracting vanadium and precipitating vanadium from stone coal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1899977A CN1899977A (en) | 2007-01-24 |
| CN1899977B true CN1899977B (en) | 2010-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610031914XA Expired - Fee Related CN1899977B (en) | 2006-07-01 | 2006-07-01 | Processing and utilizing method for tail water after extracting vanadium and precipitating vanadium from stone coal |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106315919A (en) * | 2016-09-23 | 2017-01-11 | 中国神华能源股份有限公司 | Wastewater hardness lowering device and wastewater treatment system comprising same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1314698A1 (en) * | 2000-08-10 | 2003-05-28 | Babcock-Hitachi Kabushiki Kaisha | Process and apparatus for treating ammonia-containing waste water |
| CN1552638A (en) * | 2003-12-19 | 2004-12-08 | 天津市海跃水处理高科技有限公司 | Zero-discharge treatment process for ammonium chloride wastewater |
-
2006
- 2006-07-01 CN CN200610031914XA patent/CN1899977B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1314698A1 (en) * | 2000-08-10 | 2003-05-28 | Babcock-Hitachi Kabushiki Kaisha | Process and apparatus for treating ammonia-containing waste water |
| CN1552638A (en) * | 2003-12-19 | 2004-12-08 | 天津市海跃水处理高科技有限公司 | Zero-discharge treatment process for ammonium chloride wastewater |
Non-Patent Citations (4)
| Title |
|---|
| 刘国文.有色金属冶炼氨氮废水处理方法研究.湖南有色金属20 3.2004,20(3),37-40. |
| 刘国文.有色金属冶炼氨氮废水处理方法研究.湖南有色金属20 3.2004,20(3),37-40. * |
| 刘旭娃等.从V2O5生产废水中脱除氨氮的研究.广东有色金属学报16 2.2006,16(2),84-87. |
| 刘旭娃等.从V2O5生产废水中脱除氨氮的研究.广东有色金属学报16 2.2006,16(2),84-87. * |
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| CN1899977A (en) | 2007-01-24 |
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Granted publication date: 20101117 Termination date: 20130701 |