DE523785C - Process for rendering waste water from smelting and similar operations harmless - Google Patents

Process for rendering waste water from smelting and similar operations harmless

Info

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
Application number
DEF64714D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RICHARD FEIGE
Original Assignee
RICHARD FEIGE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by RICHARD FEIGE filed Critical RICHARD FEIGE
Priority to DEF64714D priority Critical patent/DE523785C/en
Application granted granted Critical
Publication of DE523785C publication Critical patent/DE523785C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236Treatment 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.

Beispielexample

Claims (3)

Patentansprüche:Patent claims: 100 ecm Schwel wasser werden mit etwa ι g gelöstem Eisensulfat versetzt, und der sich bildende tiefdunkelblau bis schwarz gefärbte Niederschlag wird abfiltriert. In das Filtrat leitet man so lange SO2 oder SO2-haltige Abgase, bis eine merkliche Aufhellung stattfindet. Sobald das Filtrat eine hellgelbe Färbung angenommen hat, wird die Einleitung unterbrochen und mit Kalk neutralisiert. Die erhaltene Flüssigkeit zeigt keine schädliche Einwirkung auf tierisches und pflanzliches Leben.About ι g of dissolved iron sulfate are added to 100 ecm of smoldering water, and the precipitate that forms, which is dark blue to black in color, is filtered off. SO 2 or SO 2 -containing exhaust gases are passed into the filtrate until it becomes noticeably lighter. As soon as the filtrate has turned a light yellow color, the introduction is interrupted and neutralized with lime. The liquid obtained shows no harmful effects on animal and vegetable life. i. Verfahren zum Unschädlichmachen von aus Schwelereien stammenden Abwässern, dadurch gekennzeichnet, daß das Schwelwasser zunächst einer Behandlung mit wasserlöslichen Eisensalzen unterwor-i. Process for rendering waste water from smoldering harmless, characterized in that the smoldering water is first subjected to a treatment with water-soluble iron salts fen, der entstehende Niederschlag abfiltriert und in das Filtrat SO2 so lange eingeleitet wird, bis es eine hellgelbe Färbung annimmt, worauf die Einleitung unterbrochen und eine Neutralisierung des Filtrates mit Kalk o. dgl. vorgenommen wird.fen, the resulting precipitate is filtered off and introduced into the filtrate SO 2 until it takes on a light yellow color, whereupon the introduction is interrupted and the filtrate is neutralized with lime or the like. 2. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß als wasserlösliches Metallsalz, Eisensulfat verwendet wird.2. The method according to claim i, characterized in that the water-soluble Metal salt, iron sulfate is used. 3. Verfahren nach Anspruch 1 und 2, dadurch gekennzeichnet, daß an Stelle von SO2 SO2-haltige Abgase verwendet werden. 3. The method according to claim 1 and 2, characterized in that instead of SO 2 SO 2 -containing exhaust gases are used.
DEF64714D 1927-11-04 1927-11-04 Process for rendering waste water from smelting and similar operations harmless Expired DE523785C (en)

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)

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