JPS5527062A - Concentration of sludge - Google Patents
Concentration of sludgeInfo
- Publication number
- JPS5527062A JPS5527062A JP9961778A JP9961778A JPS5527062A JP S5527062 A JPS5527062 A JP S5527062A JP 9961778 A JP9961778 A JP 9961778A JP 9961778 A JP9961778 A JP 9961778A JP S5527062 A JPS5527062 A JP S5527062A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- nitrogen oxides
- nitrification
- denitrification
- gas generated
- 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.)
- Granted
Links
- 239000010802 sludge Substances 0.000 title abstract 7
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract 12
- 238000000034 method Methods 0.000 abstract 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- 229910001873 dinitrogen Inorganic materials 0.000 abstract 2
- 239000002351 wastewater Substances 0.000 abstract 2
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 239000012141 concentrate Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000010865 sewage Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Physical Water Treatments (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Treatment Of Sludge (AREA)
Abstract
PURPOSE: To float and concentrate sludge by introducing part of the activated sludge of nitrification and denitrification processes into sludgh concentrating process and by utilizing nitrogen gas generated by the denitrification phenomenon of nitrogen oxides in the mixed liquid.
CONSTITUTION: BOD present in waste water is oxidized and ammonia present is nitrified to nitrogen oxides by introducing the waste water 1, e.g., sewage, etc., together with the returned activated sludge 5, into the nitrification process 2 under aerobic condition. Then, part of the sludgemixed liquor containing the nitrogen oxides of the nitrification process 2 is flowed into the mixing process 12 where it is mixed with the original water 9 or the reducing agent 6 and then transferred to the floating concentlation process 8, whereupon nitrogen gas generated by the denitrification phenomenon of nitrogen oxides is adhered to sludge and thereby sludge is floated and concentrated. Thus, the concentration of sludge can be economically performed with simple processes.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9961778A JPS5527062A (en) | 1978-08-16 | 1978-08-16 | Concentration of sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9961778A JPS5527062A (en) | 1978-08-16 | 1978-08-16 | Concentration of sludge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5527062A true JPS5527062A (en) | 1980-02-26 |
| JPS6244998B2 JPS6244998B2 (en) | 1987-09-24 |
Family
ID=14252045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9961778A Granted JPS5527062A (en) | 1978-08-16 | 1978-08-16 | Concentration of sludge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5527062A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5864198A (en) * | 1981-10-15 | 1983-04-16 | Hitachi Plant Eng & Constr Co Ltd | Method and apparatus for biologically denitrifying waste water |
| WO1996033961A1 (en) * | 1995-04-25 | 1996-10-31 | Agronova A/S | Fertilizer and process for production thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0418107U (en) * | 1990-06-05 | 1992-02-14 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5152668A (en) * | 1974-11-01 | 1976-05-10 | Sato Zoki Co Ltd | |
| JPS5527052A (en) * | 1978-08-15 | 1980-02-26 | Ebara Infilco Co Ltd | Sludge floatation and concentration |
| JPS5527050A (en) * | 1978-08-15 | 1980-02-26 | Ebara Infilco Co Ltd | Sludge concentration |
-
1978
- 1978-08-16 JP JP9961778A patent/JPS5527062A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5152668A (en) * | 1974-11-01 | 1976-05-10 | Sato Zoki Co Ltd | |
| JPS5527052A (en) * | 1978-08-15 | 1980-02-26 | Ebara Infilco Co Ltd | Sludge floatation and concentration |
| JPS5527050A (en) * | 1978-08-15 | 1980-02-26 | Ebara Infilco Co Ltd | Sludge concentration |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5864198A (en) * | 1981-10-15 | 1983-04-16 | Hitachi Plant Eng & Constr Co Ltd | Method and apparatus for biologically denitrifying waste water |
| JPS6321558B2 (en) * | 1981-10-15 | 1988-05-07 | Hitachi Plant Eng & Constr Co | |
| WO1996033961A1 (en) * | 1995-04-25 | 1996-10-31 | Agronova A/S | Fertilizer and process for production thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6244998B2 (en) | 1987-09-24 |
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