ES356249A1 - Process for reducing the production of excess sludge in activated sludge plants for the purification of wastewater - Google Patents
Process for reducing the production of excess sludge in activated sludge plants for the purification of wastewaterInfo
- Publication number
- ES356249A1 ES356249A1 ES356249A ES356249A ES356249A1 ES 356249 A1 ES356249 A1 ES 356249A1 ES 356249 A ES356249 A ES 356249A ES 356249 A ES356249 A ES 356249A ES 356249 A1 ES356249 A1 ES 356249A1
- Authority
- ES
- Spain
- Prior art keywords
- production
- wastewater
- purification
- reducing
- sludge
- 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.)
- Expired
Links
- 239000010802 sludge Substances 0.000 title abstract 4
- 238000004519 manufacturing process Methods 0.000 title abstract 3
- 239000002351 wastewater Substances 0.000 title abstract 2
- 238000000034 method Methods 0.000 title 1
- 238000000746 purification Methods 0.000 title 1
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract 3
- 239000000645 desinfectant Substances 0.000 abstract 2
- IQUPABOKLQSFBK-UHFFFAOYSA-N 2-nitrophenol Chemical compound OC1=CC=CC=C1[N+]([O-])=O IQUPABOKLQSFBK-UHFFFAOYSA-N 0.000 abstract 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 abstract 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract 1
- 239000003242 anti bacterial agent Substances 0.000 abstract 1
- 229940088710 antibiotic agent Drugs 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- WDQNIWFZKXZFAY-UHFFFAOYSA-M fentin acetate Chemical compound CC([O-])=O.C1=CC=CC=C1[Sn+](C=1C=CC=CC=1)C1=CC=CC=C1 WDQNIWFZKXZFAY-UHFFFAOYSA-M 0.000 abstract 1
- 239000012535 impurity Substances 0.000 abstract 1
- -1 potassium cyanide Chemical compound 0.000 abstract 1
- NNFCIKHAZHQZJG-UHFFFAOYSA-N potassium cyanide Chemical compound [K+].N#[C-] NNFCIKHAZHQZJG-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Activated Sludge Processes (AREA)
- Treatment Of Sludge (AREA)
Abstract
Waste water is treated in an activated sludge plant by biologically decomposing impurities in the presence of a bacteriostatically effective concentration of a disinfectant, whereby the production of excess sludge is prevented. The disinfectant may be a phenol, particularly a nitrophenol, a soluble cyanide, e.g. potassium cyanide, an organotin compound, e.g. triphenyl tin acetate, mycelium refuse from the manufacture of antibiotics, or toluene.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1967F0053021 DE1280764B (en) | 1967-07-21 | 1967-07-21 | Process for reducing excess sludge production in activated sludge plants for wastewater treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES356249A1 true ES356249A1 (en) | 1970-04-01 |
Family
ID=7105930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES356249A Expired ES356249A1 (en) | 1967-07-21 | 1968-07-17 | Process for reducing the production of excess sludge in activated sludge plants for the purification of wastewater |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT284028B (en) |
| CH (1) | CH507163A (en) |
| DE (1) | DE1280764B (en) |
| ES (1) | ES356249A1 (en) |
| FR (1) | FR1579720A (en) |
| GB (1) | GB1221550A (en) |
| NL (1) | NL6810273A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2531129C (en) * | 2003-06-20 | 2010-11-30 | Rhodia Uk Limited | Uncoupling agents |
| EP1758825B1 (en) * | 2004-06-21 | 2008-10-29 | Rhodia UK Limited | Improvement of sludge quality |
| JP4626286B2 (en) * | 2004-12-09 | 2011-02-02 | 国立大学法人豊橋技術科学大学 | Control method of excess sludge generation |
| GB2421239B (en) * | 2004-12-20 | 2010-06-23 | Rhodia Uk Ltd | Treatment of sewage sludge |
-
1967
- 1967-07-21 DE DE1967F0053021 patent/DE1280764B/en active Pending
-
1968
- 1968-07-17 ES ES356249A patent/ES356249A1/en not_active Expired
- 1968-07-18 CH CH1072668A patent/CH507163A/en not_active IP Right Cessation
- 1968-07-19 NL NL6810273A patent/NL6810273A/xx unknown
- 1968-07-19 AT AT698168A patent/AT284028B/en not_active IP Right Cessation
- 1968-07-19 FR FR1579720D patent/FR1579720A/fr not_active Expired
- 1968-07-22 GB GB3497168A patent/GB1221550A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1221550A (en) | 1971-02-03 |
| CH507163A (en) | 1971-05-15 |
| AT284028B (en) | 1970-08-25 |
| DE1280764B (en) | 1968-10-17 |
| NL6810273A (en) | 1969-01-23 |
| FR1579720A (en) | 1969-08-29 |
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