SU1756276A1 - Method of sewage treatment - Google Patents
Method of sewage treatment Download PDFInfo
- Publication number
- SU1756276A1 SU1756276A1 SU894712238A SU4712238A SU1756276A1 SU 1756276 A1 SU1756276 A1 SU 1756276A1 SU 894712238 A SU894712238 A SU 894712238A SU 4712238 A SU4712238 A SU 4712238A SU 1756276 A1 SU1756276 A1 SU 1756276A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- wastewater
- sewage treatment
- lime
- surfactants
- stirred
- Prior art date
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- Physical Water Treatments (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Сущность изобретени : стбчные воды перемешивают механической мешалкой ч течение 2-5 мин, ввод т известь до рН 7-8 и флотируют. 2 табл.SUMMARY OF THE INVENTION: Wastewater is stirred with a mechanical stirrer for 2-5 minutes, lime is added to a pH of 7-8 and floated. 2 tab.
Description
Изобретение относитс к очистке промышленных сточных вод и может быть использовано дл очистки сточных вод машиностроительных заводов, загр зненных нефтепродуктами, ПАВ и сол ми железа .The invention relates to the treatment of industrial wastewater and can be used for the treatment of wastewater from engineering plants contaminated with petroleum products, surfactants and iron salts.
Цель изобретени - повышение степени очистки и сокращение расхода реагента.The purpose of the invention is to increase the degree of purification and reduce the consumption of reagent.
Пример. Сточные воды машиностроительного завода, содержащие, мг/л: нефтепродукты (НП) 11,8-200,2 (среднее 74,6); поверхностно-активные вещества (ПАВ) 5,0- 50.0 (ср. 7,1); железо () и () 40.1-74, 2 (ср. 57,4) и имеющие значение рН 3,4 - 5,6 (ср. 4,3), перемешивают механической мешалкой в течение 2-5 мин и ввод т известковое молоко, повыша рН до 7.0-8,0. Затем воду выдерживают в камере хлопьеобразовани в течение 25-30 мин при одновременной аэрации воздухом с интенсивностью 0,3-0.6 м3/м ч. После камеры хлопьеобразовани сточные воды отстаивают и обрабатывают во флотаторе с удалением осадка и пТамы.Example. Wastewater of a machine-building plant, containing, mg / l: petroleum products (NP) 11.8-200.2 (average 74.6); surface-active substances (surfactants) 5.0–50.0 (cf. 7.1); iron () and () 40.1-74, 2 (cf. 57.4) and having a pH value of 3.4 - 5.6 (cf. 4.3), are stirred with a mechanical stirrer for 2-5 minutes and lime is added milk, raising the pH to 7.0-8.0. Then the water is kept in the flocculation chamber for 25-30 minutes with simultaneous aeration with air with an intensity of 0.3-0.6 m3 / m. After the flocculation chamber, the wastewater is settled and treated in a floater to remove sludge and sludge.
Параллельно осуществл ют очистку сточных вод по известному способу путемIn parallel, wastewater treatment is carried out by a known method by
регулировани рИ известковым молоком, введени коагул нта, выдерживани в камере хлопъеобразовани и последующего отделени загр знений флотацией.regulating the pI with lime milk, injecting coagulant, keeping the flocculation in the chamber and subsequent separation of the contaminants by flotation.
Результаты экспериментов представлены в табл. 1 и 2.The results of the experiments are presented in table. 1 and 2.
Как видно из табл. 1 и 2, предложенный способ обеспечивает более высокую степень очистки от нефтепродуктов (на 1-4%), ПАВ (на 4-15%) и железа (на 5-14%), причем достигаетс это без использовани коагул нта , расход которого в известном способе составл ет не менее 50 мг/л, за счет увеличени сорбционной способности гидрокси- дов железа, наход щегос в сточных водах.As can be seen from the table. 1 and 2, the proposed method provides a higher degree of purification from petroleum products (by 1-4%), surfactants (by 4-15%) and iron (by 5-14%), and this is achieved without using coagulum, the consumption of which is The known method is not less than 50 mg / l, due to an increase in the sorption capacity of iron hydroxides in wastewater.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU894712238A SU1756276A1 (en) | 1989-06-29 | 1989-06-29 | Method of sewage treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU894712238A SU1756276A1 (en) | 1989-06-29 | 1989-06-29 | Method of sewage treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1756276A1 true SU1756276A1 (en) | 1992-08-23 |
Family
ID=21457575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU894712238A SU1756276A1 (en) | 1989-06-29 | 1989-06-29 | Method of sewage treatment |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1756276A1 (en) |
-
1989
- 1989-06-29 SU SU894712238A patent/SU1756276A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Смирнов Д. Н., Генкин В. Е. Очистка сточных вод в процессах обработки металлов. М.: Металлурги . 1980, с. 176, * |
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