GB1319619A - Treatment of an aqueous waste stream - Google Patents
Treatment of an aqueous waste streamInfo
- Publication number
- GB1319619A GB1319619A GB1319619DA GB1319619A GB 1319619 A GB1319619 A GB 1319619A GB 1319619D A GB1319619D A GB 1319619DA GB 1319619 A GB1319619 A GB 1319619A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stream containing
- stream
- effluent stream
- produce
- aqueous
- 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
Classifications
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
1319619 Waste water treatment UNIVERSAL OIL PRODUCTS CO 27 Oct 1970 50887/70 Heading C1C A method of treating an aqueous waste stream containing NH 4 MS comprises (a) catalytically treating the stream with oxygen under oxidizing conditions to produce an effluent stream containing NH 4 OH, (NH 4 ) 2 S 2 O 3 and elemental sulfur or ammonium polysulfide, (b) recovering from (a) an effluent stream containing (NH 4 ) 2 S 2 O 3 and (c) catalytically treating this stream with hydrogen under reducing conditions to produce an effluent stream free of (NH 4 ) 2 S 2 O 3 . In a modification of the above method, the oxidizing conditions of step (a) comprises a mole ratio of O 2 to NH 4 HS of less than 0À5 : 1 thereby producing an aqueous effluent stream containing ammonium polysulfide and a small amount of (NH 4 ) 2 S 2 O 3 , the effluent stream being subjected to ammonium polysulphide decomposition condition, to produce an overhead stream containing NH 3 , H 2 S and H 2 O and an aqueous bottom stream containing elemental sulfur and (NH 4 ) 2 S 2 O 3 , and separating the sulfur from this stream. The catalyst utilized in step (a) may be phthalocyamines and metal (i.e. iron) sulphides, and the catalyst in steps (c) may be cobalt sulphide combined with a carrier such as charcoal, activated carbon and a refractory inorganic oxide.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5088770 | 1970-10-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1319619A true GB1319619A (en) | 1973-06-06 |
Family
ID=10457789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1319619D Expired GB1319619A (en) | 1970-10-27 | 1970-10-27 | Treatment of an aqueous waste stream |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1319619A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4582690A (en) * | 1984-08-06 | 1986-04-15 | University Of Waterloo | Oxidation of polythionates |
| WO2018145923A1 (en) * | 2017-02-10 | 2018-08-16 | Haldor Topsøe A/S | A method for the hydroprocessing of renewable feeds |
-
1970
- 1970-10-27 GB GB1319619D patent/GB1319619A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4582690A (en) * | 1984-08-06 | 1986-04-15 | University Of Waterloo | Oxidation of polythionates |
| WO2018145923A1 (en) * | 2017-02-10 | 2018-08-16 | Haldor Topsøe A/S | A method for the hydroprocessing of renewable feeds |
| US11279893B2 (en) | 2017-02-10 | 2022-03-22 | Haldor Topsoe A/S | Method for the hydroprocessing of renewable feeds |
| AU2018217751B2 (en) * | 2017-02-10 | 2023-06-22 | Haldor Topsøe A/S | A method for the hydroprocessing of renewable feeds |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |