JPS5488650A - Nitrifying method - Google Patents
Nitrifying methodInfo
- Publication number
- JPS5488650A JPS5488650A JP14175077A JP14175077A JPS5488650A JP S5488650 A JPS5488650 A JP S5488650A JP 14175077 A JP14175077 A JP 14175077A JP 14175077 A JP14175077 A JP 14175077A JP S5488650 A JPS5488650 A JP S5488650A
- Authority
- JP
- Japan
- Prior art keywords
- fluidized bed
- waste water
- jet stream
- tank
- stream layer
- 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 provide a nitrifying method, capable of ammoniacal nitrogen contained in waste water promptly and in simple and economical manner, by forming a jet stream layer of waste water downwardly of an expansion layer which forms a fluidized bed of microorganism attached to solid-particle carrier.
CONSTITUTION: Fluidized bed of microorganism attached to solid-particle carrier is formed, and downwardly of the fluidized bed, a jet stream layer of waste water to be treated is formed to range from the bottom of tank to 1/10W1/4 of the fluidized bed. Such a jet stream layer can be formed, for instance, by selecting the values of maximum diameter D(m) of the tank and rate Q (m3/min) at which water to be treated is ejected from nozzle, such that they hole a relation-ship, 0.12 D2≤Q≤0.72 D2. With such an arrangement, a stable expansion layer is formed at an upper portion of the jet stream layer and stagnation in the nitrifying tank can be prevented. Thus, ammoniacal nitrogen contained in waste water can be removed with considerable reduction of treatment time. Further, operation and maintenance of the system can be simplified and at the same time its installation costs can be also lowered.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14175077A JPS5488650A (en) | 1977-11-25 | 1977-11-25 | Nitrifying method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14175077A JPS5488650A (en) | 1977-11-25 | 1977-11-25 | Nitrifying method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5488650A true JPS5488650A (en) | 1979-07-13 |
Family
ID=15299315
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14175077A Pending JPS5488650A (en) | 1977-11-25 | 1977-11-25 | Nitrifying method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5488650A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016174980A (en) * | 2015-03-18 | 2016-10-06 | 株式会社クボタ | Apparatus and method for treating water |
-
1977
- 1977-11-25 JP JP14175077A patent/JPS5488650A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016174980A (en) * | 2015-03-18 | 2016-10-06 | 株式会社クボタ | Apparatus and method for treating water |
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