SU912672A1 - Process for purifying effluents containing ammonia from heavy non-ferrous metals - Google Patents
Process for purifying effluents containing ammonia from heavy non-ferrous metals Download PDFInfo
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- SU912672A1 SU912672A1 SU802917362A SU2917362A SU912672A1 SU 912672 A1 SU912672 A1 SU 912672A1 SU 802917362 A SU802917362 A SU 802917362A SU 2917362 A SU2917362 A SU 2917362A SU 912672 A1 SU912672 A1 SU 912672A1
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- SU
- USSR - Soviet Union
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- wastewater
- alkaline reagent
- ammonia
- separated
- ferrous metals
- Prior art date
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- Removal Of Specific Substances (AREA)
Description
(54) СПОСОБ ОЧИСТКИ СТОЧНЫХ ВОД, СОДЕРЖАЩИХ АММИАК, ОТ ТЯЖЕЛЫХ ЦВЕТНЫХ МЕТАЛЛОВ(54) METHOD FOR CLEANING WASTE WATER CONTAINING AMMONIA FROM HEAVY COLORED METALS
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Изобретение относитс к очистке промышленных сточных вод, в частности к очистке сточных вод, содержащих аммиак, от соединений т желых цвет ных металлов, например меди и никел .The invention relates to the treatment of industrial wastewater, in particular to the treatment of wastewater containing ammonia, from heavy non-ferrous metal compounds, such as copper and nickel.
Дл очистки от меди и никел сточные воды обычно обрабатывают щелочным реагентом до рН 8-10, медь и никель выпадают в осадок в виде гидроокисей или основных карбонатов м ( и 2.For purification from copper and nickel, wastewater is usually treated with alkaline reagent to pH 8–10, copper and nickel precipitate as hydroxides or basic carbonates (and 2).
Очистка от меди и никел сточных вод, содержащих аммиак, представл ет особую трудность. В присутствии аммиака медь и никель образуют прочные растворимые комплексы, что снижает полноту осаждени этих металлов. Поэтому очистку провод т в жестких услови х , способствующих разрушению аммиачных комплексов.Purification of ammonia-containing copper and nickel is particularly difficult. In the presence of ammonia, copper and nickel form strong soluble complexes, which reduces the completeness of the deposition of these metals. Therefore, the cleaning is carried out in harsh conditions that contribute to the destruction of ammonia complexes.
Наиболее близким по технической сущности к изобретению вл етс способ очистки сточных вод, содержащих аммиак, от цветных металлов, включающий обработку едким натром- до рН 12 и нагревание при одновременной аэрации сжатым воздухом, выпавший осадок отфильтровывают | 3JНедостатком этого способа. вл етс трудоемкость отделени полученного объемистого гИдроокисного осадка, в результате чего снижаетс производительность процесса очистки. Причиной The closest to the technical essence of the invention is a method of purifying wastewater containing ammonia from non-ferrous metals, including treatment with caustic soda to pH 12 and heating while simultaneously aerating with compressed air, the precipitated precipitate is filtered | 3J The disadvantage of this method. is the complexity of the separation of the obtained bulky hydroxide precipitate, resulting in reduced performance of the cleaning process. The reason
10 этого вл етс невысока скорость роста кристаллов вследствие низкой температуры в момент формировани осадка при вливании едкого натра в сточные воды.Улучшить качество осад15 ка за счет предварительного подогрева сточных вод или нагревани всей реакционной массы при сливании реагирующих веществ практически невозможно , так как при этом улетучиваетс 10 of this is a low crystal growth rate due to the low temperature at the time of sludge formation when sodium hydroxide is injected into the wastewater. It is almost impossible to improve the quality of the sediment by preheating the waste water or heating the entire reaction mass as the volatile substances are lost.
20 больша часть аммиака, что также ухудшает структуру осадка .20 most of the ammonia, which also affects the structure of the sediment.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU802917362A SU912672A1 (en) | 1980-04-29 | 1980-04-29 | Process for purifying effluents containing ammonia from heavy non-ferrous metals |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU802917362A SU912672A1 (en) | 1980-04-29 | 1980-04-29 | Process for purifying effluents containing ammonia from heavy non-ferrous metals |
Publications (1)
Publication Number | Publication Date |
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SU912672A1 true SU912672A1 (en) | 1982-03-15 |
Family
ID=20892816
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU802917362A SU912672A1 (en) | 1980-04-29 | 1980-04-29 | Process for purifying effluents containing ammonia from heavy non-ferrous metals |
Country Status (1)
Country | Link |
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SU (1) | SU912672A1 (en) |
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1980
- 1980-04-29 SU SU802917362A patent/SU912672A1/en active
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