JPS57177395A - Purification of water - Google Patents
Purification of waterInfo
- Publication number
- JPS57177395A JPS57177395A JP6313281A JP6313281A JPS57177395A JP S57177395 A JPS57177395 A JP S57177395A JP 6313281 A JP6313281 A JP 6313281A JP 6313281 A JP6313281 A JP 6313281A JP S57177395 A JPS57177395 A JP S57177395A
- Authority
- JP
- Japan
- Prior art keywords
- reaction vessel
- water
- purified
- returned
- end side
- 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
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
PURPOSE: To do nitrification and denitrification at once without use of a chemical fluid, by feeding a high-BOD material, to be purified, and a part of circulating purified water from a reaction vessel to water, to be purified, on the middle of its flow inside the reaction vessel.
CONSTITUTION: Water, to be purified, e.g. sewage sludge, is fed to the horizontal end side of a reaction vessel 1 and fluidized toward the other end side under the condition that oxygen-contng. gas is supplied through an air-feed tool 3 connected to a blower 2, so that nitrification of ammoniac nitrogen and reducing denitrification of nitrous and nitric nitrogens are done at once by the action of active sludge. The major part of the purified water from the reaction vessel 1 is returned to the fluidization-initiating end side of the reaction vessel 1 and cyclincally fluidized in the reaction vessel 1, so that the water is subjected to reducing denitrification while a part of the water is returned. A part of separated sludge in a precipitating vessel 4 is returned to the reaction vessel 1, and the remainder is fed to a means 5 for post-treatment, e.g. thickening, dewatering and drying, and treated in the means 5.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6313281A JPS57177395A (en) | 1981-04-24 | 1981-04-24 | Purification of water |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6313281A JPS57177395A (en) | 1981-04-24 | 1981-04-24 | Purification of water |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57177395A true JPS57177395A (en) | 1982-11-01 |
Family
ID=13220431
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6313281A Pending JPS57177395A (en) | 1981-04-24 | 1981-04-24 | Purification of water |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57177395A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02214596A (en) * | 1989-02-16 | 1990-08-27 | Tokyo Metropolis | Method and device for removing nitrogen from sewage |
JP2000279994A (en) * | 1999-03-29 | 2000-10-10 | Shinko Pantec Co Ltd | Nitrification and denitrification treatment and apparatus therefor |
JP2002001379A (en) * | 2000-06-27 | 2002-01-08 | Sumitomo Heavy Ind Ltd | Sewage treating apparatus and method |
WO2003043941A1 (en) * | 2001-11-22 | 2003-05-30 | Ebara Corporation | Apparatus and method for treating organic waste water |
JP2012110807A (en) * | 2010-11-22 | 2012-06-14 | Metawater Co Ltd | Sewage treatment system |
JP2013039538A (en) * | 2011-08-18 | 2013-02-28 | Hitachi Plant Technologies Ltd | Wastewater treatment apparatus |
CN106007258A (en) * | 2016-07-29 | 2016-10-12 | 东南大学 | Six-box integrated two-sludge denitrifying phosphorus removal system and technology |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5419552A (en) * | 1977-07-15 | 1979-02-14 | Hachiya Kogyo Kk | Biological denitrifying method for treating filthy water |
JPS5573398A (en) * | 1978-11-30 | 1980-06-03 | Ebara Infilco Co Ltd | Biological denitrification and dephosphorization of waste water |
-
1981
- 1981-04-24 JP JP6313281A patent/JPS57177395A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5419552A (en) * | 1977-07-15 | 1979-02-14 | Hachiya Kogyo Kk | Biological denitrifying method for treating filthy water |
JPS5573398A (en) * | 1978-11-30 | 1980-06-03 | Ebara Infilco Co Ltd | Biological denitrification and dephosphorization of waste water |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02214596A (en) * | 1989-02-16 | 1990-08-27 | Tokyo Metropolis | Method and device for removing nitrogen from sewage |
JP2000279994A (en) * | 1999-03-29 | 2000-10-10 | Shinko Pantec Co Ltd | Nitrification and denitrification treatment and apparatus therefor |
JP2002001379A (en) * | 2000-06-27 | 2002-01-08 | Sumitomo Heavy Ind Ltd | Sewage treating apparatus and method |
WO2003043941A1 (en) * | 2001-11-22 | 2003-05-30 | Ebara Corporation | Apparatus and method for treating organic waste water |
US7166220B2 (en) | 2001-11-22 | 2007-01-23 | Ebara Corporation | Systems and methods for organic wastewater treatment |
JP2012110807A (en) * | 2010-11-22 | 2012-06-14 | Metawater Co Ltd | Sewage treatment system |
JP2013039538A (en) * | 2011-08-18 | 2013-02-28 | Hitachi Plant Technologies Ltd | Wastewater treatment apparatus |
CN106007258A (en) * | 2016-07-29 | 2016-10-12 | 东南大学 | Six-box integrated two-sludge denitrifying phosphorus removal system and technology |
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