RU2012113784A - METHOD FOR CLEANING WASTE WATER FROM PHOSPHATES - Google Patents
METHOD FOR CLEANING WASTE WATER FROM PHOSPHATES Download PDFInfo
- Publication number
- RU2012113784A RU2012113784A RU2012113784/05A RU2012113784A RU2012113784A RU 2012113784 A RU2012113784 A RU 2012113784A RU 2012113784/05 A RU2012113784/05 A RU 2012113784/05A RU 2012113784 A RU2012113784 A RU 2012113784A RU 2012113784 A RU2012113784 A RU 2012113784A
- Authority
- RU
- Russia
- Prior art keywords
- fibers
- water
- composite material
- tricalcium phosphate
- cellulose fibers
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract 17
- 238000004140 cleaning Methods 0.000 title claims abstract 5
- 229910019142 PO4 Inorganic materials 0.000 title claims abstract 3
- 239000002351 wastewater Substances 0.000 title claims abstract 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract 10
- 239000000835 fiber Substances 0.000 claims abstract 8
- 229920003043 Cellulose fiber Polymers 0.000 claims abstract 6
- 239000001506 calcium phosphate Substances 0.000 claims abstract 6
- 239000002131 composite material Substances 0.000 claims abstract 6
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 claims abstract 6
- 229940078499 tricalcium phosphate Drugs 0.000 claims abstract 6
- 229910000391 tricalcium phosphate Inorganic materials 0.000 claims abstract 6
- 235000019731 tricalcium phosphate Nutrition 0.000 claims abstract 6
- 239000002245 particle Substances 0.000 claims abstract 4
- 239000010802 sludge Substances 0.000 claims abstract 4
- 239000007787 solid Substances 0.000 claims abstract 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract 2
- 239000000920 calcium hydroxide Substances 0.000 claims abstract 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract 2
- 238000009388 chemical precipitation Methods 0.000 claims abstract 2
- 238000005188 flotation Methods 0.000 claims abstract 2
- 235000021317 phosphate Nutrition 0.000 claims abstract 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims abstract 2
- 238000000746 purification Methods 0.000 claims abstract 2
Landscapes
- Water Treatment By Sorption (AREA)
- Removal Of Specific Substances (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
1. Способ очистки сточной воды от фосфатов, включающий обработку воды гидроксидом кальция с образованием химическим осаждением нерастворимых частиц трикальций фосфата, выведение из обработанной воды твердых продуктов очистки, отличающийся тем, что обработку ведут в присутствии в воде диспергированных целлюлозных волокон с образованием твердых продуктов очистки в виде композиционного материала, состоящего из этих волокон с прочно сорбированными ими химически осажденными частицами трикальцийфосфата, а выведение композиционного материала ведут напорной флотацией с образованием флотошлама.2. Способ по п.1, отличающийся тем, что целлюлозные волокна содержат, мас.%: не менее 94% волокон с длиной не более 1,23 мм и не менее 54% волокон с длиной не более 0,63 мм.3. Способ по п.1 или 2, отличающийся тем, что волокна диспергируют в воде в количестве 40-150 мг/дм.4. Способ по п.1, отличающийся тем, что композиционный материал выводят из обработанной воды при содержании в нем трикальцийфосфата 100-300 мас.ч. на 100 мас.ч. целлюлозных волокон.5. Способ по п.1, отличающийся тем, что часть флотошлама возвращают в процесс очистки.6. Способ по п.1, отличающийся тем, что выводимый из процесса флотошлам утилизируют.1. The method of purification of wastewater from phosphates, including treating water with calcium hydroxide to form chemical precipitation of insoluble tricalcium phosphate particles, removing solid treatment products from treated water, characterized in that the treatment is carried out in the presence of dispersed cellulose fibers in water to form solid cleaning products in as a composite material consisting of these fibers with strongly precipitated chemically precipitated particles of tricalcium phosphate, and the removal of the composite material iala are pressurized flotation to produce flotoshlama.2. The method according to claim 1, characterized in that the cellulose fibers contain, wt.%: Not less than 94% of the fibers with a length of not more than 1.23 mm and not less than 54% of the fibers with a length of not more than 0.63 mm. The method according to claim 1 or 2, characterized in that the fibers are dispersed in water in an amount of 40-150 mg / dm. The method according to claim 1, characterized in that the composite material is removed from the treated water when it contains tricalcium phosphate 100-300 parts by weight per 100 parts by weight cellulose fibers. 5. The method according to claim 1, characterized in that part of the sludge is returned to the cleaning process. The method according to claim 1, characterized in that the sludge removed from the process is disposed of.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2012113784/05A RU2496722C1 (en) | 2012-04-10 | 2012-04-10 | Method of purifying waste water from phosphates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2012113784/05A RU2496722C1 (en) | 2012-04-10 | 2012-04-10 | Method of purifying waste water from phosphates |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RU2012113784A true RU2012113784A (en) | 2013-10-20 |
| RU2496722C1 RU2496722C1 (en) | 2013-10-27 |
Family
ID=49356795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2012113784/05A RU2496722C1 (en) | 2012-04-10 | 2012-04-10 | Method of purifying waste water from phosphates |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2496722C1 (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1339093A1 (en) * | 1985-08-07 | 1987-09-23 | Ташкентский Филиал Всесоюзного Научно-Исследовательского Института Водоснабжения,Канализации,Гидротехнических Сооружений И Инженерной Гидрогеологии "Водгео" | Method of removing phosphates from waste water |
| SU1631045A1 (en) * | 1989-09-20 | 1991-02-28 | Производственное объединение "Грузгорнохимпром" | Process for purification of effluents from phosphates |
| DE4239442C2 (en) * | 1992-11-24 | 2001-09-13 | Sebo Gmbh | Use of an adsorbent material modified with polynuclear metal oxide hydroxides for the selective elimination of inorganic phosphate from protein-containing liquids |
| JP2653423B2 (en) * | 1995-03-29 | 1997-09-17 | 工業技術院長 | Calcium phosphate compound-cellulose fiber composite material and method for producing the same |
| DE19547356A1 (en) * | 1995-12-19 | 1997-06-26 | Vifor Int Ag | Adsorbent for phosphate from aqueous medium, its preparation and use |
| DE102004031181A1 (en) * | 2004-06-28 | 2006-01-19 | Vifor (International) Ag | phosphate adsorbent |
| PT2319804E (en) * | 2006-12-14 | 2014-11-24 | Novartis Ag | Iron(iii)-carbohydrate based phosphate adsorbent |
| JP2009136746A (en) * | 2007-12-05 | 2009-06-25 | Gunma Industry Support Organization | Phosphate ion adsorbing composition, method for producing the same, and phosphate ion removing method |
-
2012
- 2012-04-10 RU RU2012113784/05A patent/RU2496722C1/en active
Also Published As
| Publication number | Publication date |
|---|---|
| RU2496722C1 (en) | 2013-10-27 |
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