DE523785C - Process for rendering waste water from smelting and similar operations harmless - Google Patents
Process for rendering waste water from smelting and similar operations harmlessInfo
- Publication number
- DE523785C DE523785C DEF64714D DEF0064714D DE523785C DE 523785 C DE523785 C DE 523785C DE F64714 D DEF64714 D DE F64714D DE F0064714 D DEF0064714 D DE F0064714D DE 523785 C DE523785 C DE 523785C
- Authority
- DE
- Germany
- Prior art keywords
- water
- filtrate
- smoldering
- harmless
- waste water
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
Description
In Schwelereien fTieftemperaturkokereien) fällt, besonders bei modernen Gro'ßanlagen, eine erhebliche Menge Abwasser an, dessen Beseitigung zu ernsten Schwierigkeiten führt. Es ist nicht möglich, diese Abwässer in Flußläufe einzuleiten, da sie dort das tierische und das pflanzliche Leben töten. Man hat zwar versucht, die Abwässer durch Verdampfung zu beseitigen, doch ist ein solches Verfahren bei den Mengen, die heute in einer Großanlage anfallen, von vornherein zur Unwirtschaftlichkeit verurteilt. Eine Filtration durch Koks und ähnliche Filterstoffe ist wegen der Betriebskosten und des Platzbedarfs solcher Anlagen in den seltensten Fällen möglich und ihr Erfolg außerdem zweifelhaft. Der erhebliche Platzbedarf spricht auch gegen das sogenannte biologische Klärverfahren, das sich in gewissen Fällen gut bewährt hat.In low-temperature coking plants) there is a considerable amount of wastewater, especially in modern large-scale plants Elimination leads to serious trouble. It is not possible to get this sewage into rivers because they kill animal and vegetable life there. Attempts have been made to evaporate the wastewater to eliminate, however, is such a process with the quantities that are in one today Large plant incurred, condemned from the outset to inefficiency. A filtration through coke and similar filter materials is because of the operating costs and the space requirements Such systems are only possible in the rarest of cases and their success is also doubtful. The considerable space requirement also speaks against the so-called biological clarification process, which has proven itself well in certain cases.
Man hat zwar bei der Reinigung von Ammoniakabwässern aus Kokereien bereits Eisensalze verwendet, doch sind diese Kokereiabwässer in ihrer Art wesensverschieden von den Schwelabwässern, deren Reinigung vorliegende Erfindung ermöglicht.Although one has already done with the cleaning of ammonia waste water from coking plants Iron salts are used, but these coking effluents are of different nature of the smoldering wastewater, the purification of which is made possible by the present invention.
Erreicht wird der angestrebte Zweck dadurch, daß man das Schwelwasser mit wasserlöslichen Eisensalzen — z. B. Eisensulfat — behandelt.The intended purpose is achieved in that the smoldering water with water-soluble Iron salts - e.g. B. iron sulfate - treated.
Durch den Zusatz dieser Salze erfolgt eine Abscheidung der Phenole. Der sich bildende Niederschlag wird in an sich bekannten Filtriereinrichtungen abfiltriert oder in Klärbecken absitzen gelassen, und in das Filtrat werden SO2 oder SO2-haltige Abgase eingeleitet, wodurch unerwünschte Verbindungen, z. B. Merkaptane, Pyridinbasen, Nitrile u. a., zerstört werden. Sobald das Filtrat eine hellgelbe Färbung angenommen hat, wird die Einleitung von SO2 abgebrochen und mit Kalk ο. dgl. neutralisiert. Das nunmehr hellgelbe Ablaufwasser kann unbedenklich in Flußläufe u. dgl. eingeleitet werden, ohne daß eine Schädigung des tierischen und pflanzlichen Lebens zu befürchten wäre.The addition of these salts results in a separation of the phenols. The precipitate that forms is filtered off in known filtration devices or allowed to settle in clarifiers, and SO 2 or SO 2 -containing exhaust gases are introduced into the filtrate, whereby undesired compounds, e.g. B. mercaptans, pyridine bases, nitriles, etc., are destroyed. As soon as the filtrate has taken on a light yellow color, the introduction of SO 2 is stopped and lime ο. like. neutralized. The now light yellow runoff water can be safely discharged into rivers and the like without any risk of damage to animal and plant life.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF64714D DE523785C (en) | 1927-11-04 | 1927-11-04 | Process for rendering waste water from smelting and similar operations harmless |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF64714D DE523785C (en) | 1927-11-04 | 1927-11-04 | Process for rendering waste water from smelting and similar operations harmless |
Publications (1)
Publication Number | Publication Date |
---|---|
DE523785C true DE523785C (en) | 1931-04-27 |
Family
ID=7110047
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEF64714D Expired DE523785C (en) | 1927-11-04 | 1927-11-04 | Process for rendering waste water from smelting and similar operations harmless |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE523785C (en) |
-
1927
- 1927-11-04 DE DEF64714D patent/DE523785C/en not_active Expired
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