RU2010116055A - METHOD FOR NEUTRALIZING ACID SULPHATE-CONTAINING WASTE WATERS AND DEVICE FOR ITS IMPLEMENTATION - Google Patents
METHOD FOR NEUTRALIZING ACID SULPHATE-CONTAINING WASTE WATERS AND DEVICE FOR ITS IMPLEMENTATION Download PDFInfo
- Publication number
- RU2010116055A RU2010116055A RU2010116055/05A RU2010116055A RU2010116055A RU 2010116055 A RU2010116055 A RU 2010116055A RU 2010116055/05 A RU2010116055/05 A RU 2010116055/05A RU 2010116055 A RU2010116055 A RU 2010116055A RU 2010116055 A RU2010116055 A RU 2010116055A
- Authority
- RU
- Russia
- Prior art keywords
- neutralization
- stage
- carried out
- hydroxides
- sump
- Prior art date
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- 230000003472 neutralizing effect Effects 0.000 title claims abstract 6
- 238000000034 method Methods 0.000 title claims abstract 5
- 239000002351 wastewater Substances 0.000 title claims abstract 5
- 239000002253 acid Substances 0.000 title abstract 2
- 238000006386 neutralization reaction Methods 0.000 claims abstract 15
- 125000000129 anionic group Chemical group 0.000 claims abstract 10
- 229910052602 gypsum Inorganic materials 0.000 claims abstract 5
- 239000010440 gypsum Substances 0.000 claims abstract 5
- 239000010802 sludge Substances 0.000 claims abstract 5
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract 4
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract 4
- -1 ferrous hydroxides Chemical class 0.000 claims abstract 4
- 150000004679 hydroxides Chemical class 0.000 claims abstract 4
- 239000002244 precipitate Substances 0.000 claims abstract 4
- 238000004064 recycling Methods 0.000 claims abstract 4
- 230000002378 acidificating effect Effects 0.000 claims abstract 3
- 235000011116 calcium hydroxide Nutrition 0.000 claims abstract 3
- 239000000920 calcium hydroxide Substances 0.000 claims abstract 3
- 229910052751 metal Inorganic materials 0.000 claims abstract 3
- 239000002184 metal Substances 0.000 claims abstract 3
- 150000002739 metals Chemical class 0.000 claims abstract 3
- 238000004062 sedimentation Methods 0.000 claims abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract 3
- JJLJMEJHUUYSSY-UHFFFAOYSA-L Copper hydroxide Chemical class [OH-].[OH-].[Cu+2] JJLJMEJHUUYSSY-UHFFFAOYSA-L 0.000 claims abstract 2
- 229910001956 copper hydroxide Inorganic materials 0.000 claims abstract 2
- 238000001914 filtration Methods 0.000 claims abstract 2
- 239000008187 granular material Substances 0.000 claims abstract 2
- 229910052738 indium Inorganic materials 0.000 claims abstract 2
- 239000002245 particle Substances 0.000 claims abstract 2
- 230000001376 precipitating effect Effects 0.000 claims abstract 2
- 238000001556 precipitation Methods 0.000 claims abstract 2
- 239000008213 purified water Substances 0.000 claims abstract 2
- UGZADUVQMDAIAO-UHFFFAOYSA-L zinc hydroxide Chemical class [OH-].[OH-].[Zn+2] UGZADUVQMDAIAO-UHFFFAOYSA-L 0.000 claims abstract 2
- 230000018044 dehydration Effects 0.000 claims 2
- 238000006297 dehydration reaction Methods 0.000 claims 2
- 239000013049 sediment Substances 0.000 claims 2
- 239000002002 slurry Substances 0.000 claims 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims 1
- 235000011941 Tilia x europaea Nutrition 0.000 claims 1
- 239000004571 lime Substances 0.000 claims 1
- 229910000000 metal hydroxide Inorganic materials 0.000 claims 1
- 150000004692 metal hydroxides Chemical class 0.000 claims 1
- 239000008267 milk Substances 0.000 claims 1
- 210000004080 milk Anatomy 0.000 claims 1
- 235000013336 milk Nutrition 0.000 claims 1
- 238000005406 washing Methods 0.000 claims 1
Landscapes
- Removal Of Specific Substances (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
1. Способ нейтрализации кислых сульфатсодержащих сточных вод, включающий нейтрализацию известковым молоком и осаждение образовавшихся взвешенных частиц в присутствии анионного флокулянта, отличающийся тем, что нейтрализацию проводят в несколько ступеней, при этом на первой ступени нейтрализацию проводят до рН 4,5-5,0 и осаждение проводят в отстойнике без применения флокулянта, а образовавшийся осадок, содержащий гипс и гидроксиды трехвалентного железа, частично за счет рециркуляции возвращают в отстойник, на второй ступени нейтрализацию проводят до рН 6,0-7,0 и осаждают гидроксиды двухвалентной меди в присутствии анионного флокулянта, на третьей ступени нейтрализацию проводят до рН 7,2-8,0 и осаждают гидроксиды двухвалентного цинка в присутствии анионного флокулянта, на четвертой ступени нейтрализацию проводят до рН 8,5-9,2 и осаждают гидроксиды двухвалентного железа в присутствии анионного флокулянта, на пятой ступени нейтрализацию проводят до рН 9,5-10,5 и осаждают гидроксиды двухвалентного марганца в присутствии анионного флокулянта, причем осадки двухвалентных металлов размещают индивидуально в отдельных секциях шламовых площадок, а очищенную воду подвергают доочистке фильтрованием в зернистых материалах и очистке в биологических прудах. ! 2. Способ по п.1, отличающийся тем, что осадок, содержащий гипс и гидроксиды трехвалентного железа, образованный на первой ступени нейтрализации, возвращают за счет рециркуляции на 20-30 об.% в отстойник. ! 3. Устройство нейтрализации кислых сульфатсодержащих сточных вод, включающее отстойник, реагентное хозяйство и шламовые площадки, отличающееся тем, что содержит послед� 1. The method of neutralizing acidic sulfate-containing wastewater, including neutralizing with milk of lime and precipitating the formed suspended particles in the presence of an anionic flocculant, characterized in that the neutralization is carried out in several stages, while the first stage of neutralization is carried out to pH 4.5-5.0 and sedimentation is carried out in the sump without the use of a flocculant, and the precipitate formed, containing gypsum and ferric hydroxides, is partially returned to the sump due to recycling, in the second stage of neutralization they are carried out to a pH of 6.0-7.0 and copper hydroxides are precipitated in the presence of an anionic flocculant; in the third stage, neutralization is carried out to a pH of 7.2–8.0 and divalent zinc hydroxides are precipitated in the presence of an anionic flocculant; in the fourth stage, neutralization is carried out to pH 8.5–9.2 and ferrous hydroxides are precipitated in the presence of an anionic flocculant; at the fifth stage, neutralization is carried out to pH 9.5–10.5 and ferrous manganese hydroxides are precipitated in the presence of an anionic flocculant, and precipitation of divalent metals ra individually placed in separate sections of the sludge sites, and purified water is subjected to post-treatment by filtration in granular materials and treatment in biological ponds. ! 2. The method according to claim 1, characterized in that the precipitate containing gypsum and ferric hydroxides formed in the first stage of neutralization is returned by recycling of 20-30 vol.% In the sump. ! 3. A device for the neutralization of acid sulfate-containing wastewater, including a sump, a reagent farm and sludge sites, characterized in that it contains the last
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2010116055/05A RU2438998C1 (en) | 2010-04-22 | 2010-04-22 | Method of neutralising acid sulphate-containing effluents and device to this end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2010116055/05A RU2438998C1 (en) | 2010-04-22 | 2010-04-22 | Method of neutralising acid sulphate-containing effluents and device to this end |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RU2010116055A true RU2010116055A (en) | 2011-10-27 |
| RU2438998C1 RU2438998C1 (en) | 2012-01-10 |
Family
ID=44997828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2010116055/05A RU2438998C1 (en) | 2010-04-22 | 2010-04-22 | Method of neutralising acid sulphate-containing effluents and device to this end |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2438998C1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110746003A (en) * | 2019-11-27 | 2020-02-04 | 南通汇佰川工程技术有限公司 | Convenient integrated paint spraying wastewater treatment and recycling system and method |
| CN114057315A (en) * | 2020-07-29 | 2022-02-18 | 山东浪潮华光光电子股份有限公司 | Gallium arsenide grinding cooling water recycling device and using method thereof |
| CN115259326A (en) * | 2022-09-05 | 2022-11-01 | 西安交通大学 | Grid flocculation tank for reinforcing removal of pollutants by inducing formation of coral reef-shaped flocs |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2691052C1 (en) * | 2018-12-19 | 2019-06-07 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный энергетический университет" (ФГБОУ ВО "КГЭУ") | Method of purifying highly mineralized acid wastewater from a sulphate treatment plant |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2071451C1 (en) * | 1992-01-10 | 1997-01-10 | Акционерное общество закрытого типа "Суперкерамика" | Method for purification of acid sewage against sulfate ions |
| CA2084327A1 (en) * | 1992-12-02 | 1994-06-03 | Nural Kuyucak | Lime neutralization process for treating acidic waters |
| RU2305661C2 (en) * | 2005-03-02 | 2007-09-10 | Общество с ограниченной ответственностью "Институт Гипроникель"(ООО "Институт Гипроникель") | Method of processing used solutions containing sulfuric acid, nonferrous metals and iron (versions) |
| RU2355647C1 (en) * | 2008-03-07 | 2009-05-20 | Государственное образовательное учреждение высшего профессионального образования "Уфимский государственный нефтяной технический университет" | Method of acid sulphate-containing effluents neutralisation |
-
2010
- 2010-04-22 RU RU2010116055/05A patent/RU2438998C1/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110746003A (en) * | 2019-11-27 | 2020-02-04 | 南通汇佰川工程技术有限公司 | Convenient integrated paint spraying wastewater treatment and recycling system and method |
| CN114057315A (en) * | 2020-07-29 | 2022-02-18 | 山东浪潮华光光电子股份有限公司 | Gallium arsenide grinding cooling water recycling device and using method thereof |
| CN115259326A (en) * | 2022-09-05 | 2022-11-01 | 西安交通大学 | Grid flocculation tank for reinforcing removal of pollutants by inducing formation of coral reef-shaped flocs |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2438998C1 (en) | 2012-01-10 |
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| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20130423 |