RU2056366C1 - Method of mineralized sewer treatment - Google Patents
Method of mineralized sewer treatment Download PDFInfo
- Publication number
- RU2056366C1 RU2056366C1 SU5051541A RU2056366C1 RU 2056366 C1 RU2056366 C1 RU 2056366C1 SU 5051541 A SU5051541 A SU 5051541A RU 2056366 C1 RU2056366 C1 RU 2056366C1
- Authority
- RU
- Russia
- Prior art keywords
- hydroxide
- mineralized
- iron
- treatment
- iii
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 8
- MSNWSDPPULHLDL-UHFFFAOYSA-K ferric hydroxide Chemical compound [OH-].[OH-].[OH-].[Fe+3] MSNWSDPPULHLDL-UHFFFAOYSA-K 0.000 claims description 4
- 230000002378 acidificating effect Effects 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims 1
- 239000002699 waste material Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000011033 desalting Methods 0.000 abstract 1
- 239000010865 sewage Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 150000001450 anions Chemical class 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 235000014413 iron hydroxide Nutrition 0.000 description 3
- 159000000014 iron salts Chemical class 0.000 description 3
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 3
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Description
Изобретение относится к способам очистки минерализованных стоков от сульфатов, фосфатов и от других примесей, обусловливающих минерализацию, и может быть использовано для предочистки природных и промышленных сточных вод. The invention relates to methods for purifying mineralized effluents from sulfates, phosphates and other impurities that determine mineralization, and can be used for pre-treatment of natural and industrial wastewater.
Известен способ очистки сточных вод коагулянтами солями алюминия и железа [1]
Наиболее близким по технической сущности и достигаемому результату к описываемому способу является использование гидроксида железа (III) для сорбции анионов в кислой среде рН меньше 7. Недостатком этого способа является низкая степень очистки, а использование системы с рН менее 2,5 ведет к растворению Fe(ОH)3 [2]
Цель изобретения повышение степени очистки от анионного состава примесей в очищаемой воде.A known method of wastewater treatment by coagulants with aluminum and iron salts [1]
The closest in technical essence and the achieved result to the described method is the use of iron (III) hydroxide for sorption of anions in an acidic medium, the pH is less than 7. The disadvantage of this method is the low degree of purification, and the use of a system with a pH of less than 2.5 leads to the dissolution of Fe ( OH) 3 [2]
The purpose of the invention is to increase the degree of purification from the anionic composition of impurities in the purified water.
Поставленная цель достигается тем, что обработку воды гидроокисью железа (III) проводят при достижении у смеси рН 2,6-3,6. Гидроксид железа используют при остаточной влажности 85-92%
При дегидратации гидроокиси меняется сорбционная активность геля Fe(ОH)3 и ослабляются условия взаимодействия анионов с молекулами гидроксида. Остаточная влажность 85% достаточна. Адсорбция гидроксидом железа анионов в среде с рН меньше 7 повышается. В этом случае создаются условия к восстановлению гидроксильных групп другими анионами. При рН смеси менее 2,6 и более 3,6 сорбционные свойства гидроксида железа (III) уменьшаются.This goal is achieved in that the water is treated with iron hydroxide (III) when the mixture reaches a pH of 2.6-3.6. Iron hydroxide is used with a residual moisture content of 85-92%
During hydroxide dehydration, the sorption activity of the Fe (OH) 3 gel changes and the conditions for the interaction of anions with hydroxide molecules are weakened. A residual humidity of 85% is sufficient. Adsorption by iron hydroxide of anions in a medium with a pH of less than 7 increases. In this case, conditions are created for the reduction of hydroxyl groups by other anions. When the pH of the mixture is less than 2.6 and more than 3.6, the sorption properties of iron (III) hydroxide are reduced.
П р и м е р 1. Синтезированная гидроокись из соли хлорного железа, промытая и отфильтрованная, смешивалась с кислым раствором сульфата натрия, содержащего 1556 мг/л солей. Суспензия при рН 2,55 выдерживалась 0,5 ч при перемешивании. В фильтрате снизилось содержание сульфатов на 25%
Аналогично примеру 1 (опыт 1) проводилась обработка при условиях, указанных в таблице в опытах 2-4. Снижение сульфатов в них соответственно составило 82,46, 34, 21, 13,96%
В опытах 6-8 использовался подсушенный гель с влажностью 85,4, 64 и 10,6% Снижение сульфатов в растворах в этом случае составило соответственно 40, 10 и 32%PRI me
Analogously to example 1 (experiment 1), the processing was carried out under the conditions indicated in the table in experiments 2-4. The decrease in sulfates in them, respectively, amounted to 82.46, 34, 21, 13.96%
In experiments 6-8, a dried gel with a moisture content of 85.4, 64, and 10.6% was used. The decrease in sulfates in solutions in this case was 40, 10, and 32%, respectively.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU5051541 RU2056366C1 (en) | 1992-07-06 | 1992-07-06 | Method of mineralized sewer treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU5051541 RU2056366C1 (en) | 1992-07-06 | 1992-07-06 | Method of mineralized sewer treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RU2056366C1 true RU2056366C1 (en) | 1996-03-20 |
Family
ID=21608912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU5051541 RU2056366C1 (en) | 1992-07-06 | 1992-07-06 | Method of mineralized sewer treatment |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2056366C1 (en) |
-
1992
- 1992-07-06 RU SU5051541 patent/RU2056366C1/en active
Non-Patent Citations (1)
| Title |
|---|
| 1. Кульский Л.А., Когановский А.М., Гороновский и др. 1. Физико-химические основы очистки воды коагуляцией. Киев: АН УССР, 1950. 2. Глазман Ю.М. и др. Сорбция противоионов при коагуляции солей гидроокиси железа. - Коллоиды, 1965, N 4, с.513-519. * |
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