SU593655A3 - Method of purifying waste water from oil - Google Patents
Method of purifying waste water from oilInfo
- Publication number
- SU593655A3 SU593655A3 SU731962619A SU1962619A SU593655A3 SU 593655 A3 SU593655 A3 SU 593655A3 SU 731962619 A SU731962619 A SU 731962619A SU 1962619 A SU1962619 A SU 1962619A SU 593655 A3 SU593655 A3 SU 593655A3
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- oil
- waste water
- purifying waste
- water
- electrolysis
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/06—Separation of liquids from each other by electricity
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/465—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electroflotation
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Thermal Sciences (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Physical Water Treatments (AREA)
- Electrostatic Separation (AREA)
Description
Изобретение относитс к способам очистки сточных вод от масел и может найти применение в металлообрабатывающей, химической промышленности. Известен способ очистки сточных под от масла путем электролиза. Плотность тока на катоде 6,2-10 - 1,1 10 А/дм причем катод располагают горизонтально, а аноды подвешивают вертикально 1. Этот способ по технической сущности наиболее близок к изобретению . Однако способ требует наличи дорогосто щей установки и не обеспечивает очистки от масла сточных вод до предельна допустимых концентраций 10 мг/л. С цельюповышени степени очистки сточные воды подвергают электролизу в чейке с вертикально расположенными электродами при плотности тока на них 0,5--3,0 А/дм2, предпочтительно 1,0-2,0 А/дм, отдел ют масло и воду, вновь обрабатывают при плотности тока 0,5--0,8 А/дм 2, предпочтительно 0,1 - 0,2 А/дм, причем р11 сточных вод поддерживают равным 5-7. Способ осуществл ют следующим образом. Сточные воды, содержащие масло, в частности эмульсию масла воде, подвергают электролизу в чейке с вертикально расположенными электродами при плотности тока 0,5 3,0 А/дм, пред1ючтительно 1,0--2,0 А/дм. При этом больша часть «растворсипих гидрофобными част ми мол(кул в капельках масла анионо-или катиопоактивных эмульгаторов нейтрализуетс на аноде или катоде так, что силы отталкивани между капельками масла исчезают и эти капельки могут беспреп тственно объедин тьс в более крупные капли масла, которые могут быстрее поднимаг1 с в волной фазе. Масло отдел ют, л воду подвергают вторичному э чектролизу, осущестг л емому при более низких значени х плотпости тока - 0,5-0,8 А/дм. Содержащиес в водной фазе, проп едщей первую ступень, остаточные количества эмульгаторов могут быть почти полностью нейтрализованы и при незначительном перемешивании очищаемой водпой фазы. Под действием выдел ющихс при электролизе га зов масло легко образует круппые кап.11и, ко торые могут быть быстро и беспреп тствгчпю отделены от водной ()азы. В ()езультате маслосодержап ие сточпые воды могуг быть очимимп. от масла до предельно допустимых копценгр Капельки масла поднимаютс вверх естест венным образом и при этом создаютс особен но благопри тные предпосылки дл того, чтоThe invention relates to methods for treating wastewater from oils and may find application in the metalworking, chemical industry. A known method of cleaning waste under the oil by electrolysis. The current density at the cathode is 6.2-10 - 1.1 10 A / dm and the cathode is placed horizontally and the anodes are suspended vertically 1. This method is closest to the invention in its technical essence. However, the method requires the presence of an expensive installation and does not provide waste oil treatment to the maximum permissible concentration of 10 mg / l. In order to increase the degree of purification, the wastewater is subjected to electrolysis in a cell with vertically arranged electrodes at a current density of 0.5--3.0 A / dm2, preferably 1.0-2.0 A / dm, the oil and water are separated, again treated at a current density of 0.5–0.8 A / dm 2, preferably 0.1–0.2 A / dm, with the p11 of the wastewater being maintained at 5–7. The method is carried out as follows. Wastewater containing oil, in particular, an emulsion of an oil to water, is subjected to electrolysis in a cell with vertically arranged electrodes at a current density of 0.5 to 3.0 A / dm, preferably 1.0–2.0 A / dm. At the same time, most of the dissolving hydrophobic parts of the mole (cules in the oil droplets of anionic or cationic active emulsifiers are neutralized on the anode or cathode so that the repulsive forces between the droplets of oil disappear and these droplets can be unobstructedly combined into larger droplets of oil that can faster lifting in the wave phase. The oil is separated, the water is subjected to secondary electrolysis, carried out at lower current densities - 0.5-0.8 A / dm. Contained in the aqueous phase, which feeds the first stage, residual The emulsifiers can be almost completely neutralized with a slight mixing of the water phase being cleaned. Under the effect of the gases released during electrolysis, the oil easily forms groups of caps 11 that can be quickly and easily separated from the water (). As a result, the oil-containing effluent water can be otchimimpy from oil to the maximum permissible oil crescenter. Oil droplets rise up naturally and thus create especially favorable prerequisites for
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT769672A AT315761B (en) | 1972-09-07 | 1972-09-07 | Process for separating oil from waste water containing oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU593655A3 true SU593655A3 (en) | 1978-02-15 |
Family
ID=3598607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU731962619A SU593655A3 (en) | 1972-09-07 | 1973-09-06 | Method of purifying waste water from oil |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS5548848B2 (en) |
| AT (1) | AT315761B (en) |
| CH (1) | CH562165A5 (en) |
| DD (1) | DD107431A5 (en) |
| GB (1) | GB1437274A (en) |
| HU (1) | HU168671B (en) |
| IT (1) | IT998560B (en) |
| PL (1) | PL87011B1 (en) |
| SU (1) | SU593655A3 (en) |
| YU (1) | YU35554B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS553827A (en) * | 1978-06-26 | 1980-01-11 | Soken Kagaku Kk | Method and apparatus for electrolytic treatment of waste water |
| JPS5835995U (en) * | 1981-06-02 | 1983-03-09 | 松菱金属工業株式会社 | Purifier for bathtub installation |
| WO1986001124A1 (en) * | 1984-08-11 | 1986-02-27 | Edgar Renzler | Process for the separation of emulsions containing water as a continuous phase and device for the application of the process |
| CN115636478A (en) * | 2021-07-19 | 2023-01-24 | 中国石油天然气股份有限公司 | Sewage treatment method and device |
| EP4360746A1 (en) | 2022-10-28 | 2024-05-01 | Monastic Beverages GmbH | Method for producing a precursor for foodstuffs |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4892269A (en) * | 1972-03-09 | 1973-11-30 |
-
1972
- 1972-09-07 AT AT769672A patent/AT315761B/en not_active IP Right Cessation
-
1973
- 1973-09-05 HU HUOE000208 patent/HU168671B/hu unknown
- 1973-09-06 SU SU731962619A patent/SU593655A3/en active
- 1973-09-06 CH CH1280873A patent/CH562165A5/xx not_active IP Right Cessation
- 1973-09-06 DD DD17335773A patent/DD107431A5/xx unknown
- 1973-09-07 JP JP10101573A patent/JPS5548848B2/ja not_active Expired
- 1973-09-07 GB GB4224373A patent/GB1437274A/en not_active Expired
- 1973-09-07 YU YU238973A patent/YU35554B/en unknown
- 1973-09-07 IT IT2870273A patent/IT998560B/en active
- 1973-09-07 PL PL16507973A patent/PL87011B1/pl unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DD107431A5 (en) | 1974-08-05 |
| JPS4993962A (en) | 1974-09-06 |
| DE2345353B2 (en) | 1977-06-30 |
| DE2345353A1 (en) | 1974-03-14 |
| JPS5548848B2 (en) | 1980-12-09 |
| GB1437274A (en) | 1976-05-26 |
| YU238973A (en) | 1980-09-25 |
| HU168671B (en) | 1976-06-28 |
| IT998560B (en) | 1976-02-20 |
| AT315761B (en) | 1974-06-10 |
| CH562165A5 (en) | 1975-05-30 |
| PL87011B1 (en) | 1976-06-30 |
| YU35554B (en) | 1981-04-30 |
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