JPS5638193A - Concentrating method for sludge - Google Patents
Concentrating method for sludgeInfo
- Publication number
- JPS5638193A JPS5638193A JP11353379A JP11353379A JPS5638193A JP S5638193 A JPS5638193 A JP S5638193A JP 11353379 A JP11353379 A JP 11353379A JP 11353379 A JP11353379 A JP 11353379A JP S5638193 A JPS5638193 A JP S5638193A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- generated
- nitrate
- separated
- denitrifying
- 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
- 239000010802 sludge Substances 0.000 title abstract 7
- 238000000034 method Methods 0.000 title abstract 4
- 229910002651 NO3 Inorganic materials 0.000 abstract 6
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 4
- 150000001875 compounds Chemical class 0.000 abstract 3
- 239000007788 liquid Substances 0.000 abstract 3
- 241000894006 Bacteria Species 0.000 abstract 2
- 239000007789 gas Substances 0.000 abstract 2
- 229910052757 nitrogen Inorganic materials 0.000 abstract 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 abstract 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000006866 deterioration Effects 0.000 abstract 1
- 239000008103 glucose Substances 0.000 abstract 1
- -1 glucose etc. Chemical class 0.000 abstract 1
- 229910017604 nitric acid Inorganic materials 0.000 abstract 1
- 230000001737 promoting effect Effects 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 239000002351 wastewater Substances 0.000 abstract 1
- 238000004065 wastewater treatment Methods 0.000 abstract 1
Landscapes
- Treatment Of Sludge (AREA)
Abstract
PURPOSE: To control an increase of nitrogen concentration in separated water, by adding nitrate and organic carbonaceous compound to the sludge generated by the waste water treatment and promoting the denitrifying treatment by the denitrifying bacteria and then, floating and concentrating the sludge by generated N2 gas effectively.
CONSTITUTION: Nitrate suce as NaNO3 etc. and organic carbonaceous compound such as glucose etc., are added to the sludge generated at the time of treating waste water by activated sludge method and denifrifying reaction is promoted by denitrifying bacteria in the sludge. It is preferable to add said nitrate in such an amt. that the nitric acid type nitrogen in the suldge exists at about ≥30ppm. Also, treating condition other than adding nitrate and organic carbonaceous compound, is preferable to be in the normal condition of denitrifying reaction, for example, 0W50°C, especially 25±5°C, 6W8pH. Next, the sludge having a high concentration of solid matter, which is floated by generated N2 gas, is separated by the normal solid- liquid separation means and on the one hand, separated liquid is returned to the purifying process. Further, deterioration of quality of treated water, is restrained by decreasing the concentration of NO3 - in the separated liquid, since the NO3 - can't be decomposed in the purifying process.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11353379A JPS5638193A (en) | 1979-09-06 | 1979-09-06 | Concentrating method for sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11353379A JPS5638193A (en) | 1979-09-06 | 1979-09-06 | Concentrating method for sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5638193A true JPS5638193A (en) | 1981-04-13 |
Family
ID=14614725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11353379A Pending JPS5638193A (en) | 1979-09-06 | 1979-09-06 | Concentrating method for sludge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5638193A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332836A (en) * | 2013-06-09 | 2013-10-02 | 华南农业大学 | Denitrification sulphur removal-based in-situ black-odorous riverway bottom mud oxidization technology |
-
1979
- 1979-09-06 JP JP11353379A patent/JPS5638193A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332836A (en) * | 2013-06-09 | 2013-10-02 | 华南农业大学 | Denitrification sulphur removal-based in-situ black-odorous riverway bottom mud oxidization technology |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE3766120D1 (en) | METHOD FOR BIOLOGICAL WASTE WATER TREATMENT. | |
| SU1346587A1 (en) | Method of biological purification of waste water from phosphorus and nitrogen | |
| JPS5638193A (en) | Concentrating method for sludge | |
| JPS5712893A (en) | Disposal of waste water | |
| JPS5212761A (en) | Method of treating waste water | |
| JPS56161892A (en) | Unstationary active sludge process | |
| JPS5721996A (en) | Treating method for waste liquid containing reducible substance | |
| JPS5212762A (en) | Method of treating waste water | |
| JPS53118854A (en) | Method of treating waste water | |
| JPS55147197A (en) | Treating method for sewage | |
| GB1496069A (en) | Method for the biological purification of effluent and the plant for carrying out the process | |
| JPS5784792A (en) | Denitrification of organic waste water | |
| JPS5342451A (en) | Process for purifying organic waste water | |
| JPS54121560A (en) | Method of disposal for urinary sewage | |
| GB1429264A (en) | Process for purifying reducing waste waters containing thiocyana tes and thiosulphates | |
| JPS5471857A (en) | Method of treating ammonia containing waste water by way of biological denitrification | |
| JPS5724699A (en) | Disposal of highly concentrated waste liquid | |
| JPS5268755A (en) | Process for biological treatment of denitrification | |
| JPS55119496A (en) | Waste water treating method | |
| Olthof et al. | Benzol Plant Wastewater Treatment in a Packed-Bed Reactor | |
| JPS5799390A (en) | Treatment of organic waste liquid | |
| JPS5638196A (en) | Concentrating method for sludge | |
| Bridle et al. | Nitrogen and Contaminant Control of Coke Plant Effluents in an Upgraded Biological System | |
| JPS52146050A (en) | Process for waste water with high concentration of organic component | |
| FR2400489A1 (en) | Biological purification of waste water - includes oxygenation, degradation, nitrification and denitrification steps |