JPS5691807A - Flocculation of suspension in liquid - Google Patents
Flocculation of suspension in liquidInfo
- Publication number
- JPS5691807A JPS5691807A JP17351679A JP17351679A JPS5691807A JP S5691807 A JPS5691807 A JP S5691807A JP 17351679 A JP17351679 A JP 17351679A JP 17351679 A JP17351679 A JP 17351679A JP S5691807 A JPS5691807 A JP S5691807A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- approx
- pipe
- flocculation
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
PURPOSE: To raise the efficiency of flocculation by a simplified operation in which a liquid to be treated is heated to a temperature above room temperature and then a flocculant is added to the liquid for flocculation.
CONSTITUTION: Excessive sludge from biological treatment is passed from a sludge treatment tank 12 with a stirrer 14 through a pipe 16 and then a heat exchanger 20 by means of a supply pump 18, preheated to approx. 50°C, and then put in a heating tank 26 to heat it to a high temperature of approx. 90°C by a heater 28. Then, the liquid to be treated is put in a flocculating tank 30 and an amount (the ratio thereof is 4 liters/m3) of a ferric chloride solution (28%) as a flocculant is added to the liquid through a pipe 31 while keeping it at approx. 90°C by heating, followed by a 5min stirring, where the pH3W4 of the liquid is raised to pH6W7 by the addition of a NaOH solution as a neutralizer through a pipe 32. Then, the high- temperature liquid is heat-exchanged with the heat exchanger 20 to cool it to approx. 30°C, discharged through a pipe 34, and then filtered by a filter.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17351679A JPS5691807A (en) | 1979-12-27 | 1979-12-27 | Flocculation of suspension in liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17351679A JPS5691807A (en) | 1979-12-27 | 1979-12-27 | Flocculation of suspension in liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5691807A true JPS5691807A (en) | 1981-07-25 |
Family
ID=15961966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17351679A Pending JPS5691807A (en) | 1979-12-27 | 1979-12-27 | Flocculation of suspension in liquid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5691807A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61242688A (en) * | 1985-04-18 | 1986-10-28 | Joji Kawamoto | Method and apparatus for treating waste water by colloid adsorption |
| WO2005021129A1 (en) * | 2003-08-29 | 2005-03-10 | The University Of Newcastle Research Associates Limited | Stimulant sensitive flocculation and consolidation |
| JP2013010084A (en) * | 2011-06-30 | 2013-01-17 | Hitachi Ltd | Water purification process and water purifying apparatus thereof |
-
1979
- 1979-12-27 JP JP17351679A patent/JPS5691807A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61242688A (en) * | 1985-04-18 | 1986-10-28 | Joji Kawamoto | Method and apparatus for treating waste water by colloid adsorption |
| WO2005021129A1 (en) * | 2003-08-29 | 2005-03-10 | The University Of Newcastle Research Associates Limited | Stimulant sensitive flocculation and consolidation |
| JP2013010084A (en) * | 2011-06-30 | 2013-01-17 | Hitachi Ltd | Water purification process and water purifying apparatus thereof |
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