DE668465C - Prevention of putrefaction of dairy waste water - Google Patents

Prevention of putrefaction of dairy waste water

Info

Publication number
DE668465C
DE668465C DER92146D DER0092146D DE668465C DE 668465 C DE668465 C DE 668465C DE R92146 D DER92146 D DE R92146D DE R0092146 D DER0092146 D DE R0092146D DE 668465 C DE668465 C DE 668465C
Authority
DE
Germany
Prior art keywords
putrefaction
waste water
prevention
dairy
wastewater
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
DER92146D
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.)
WILHELM RADERMACHER
Original Assignee
WILHELM RADERMACHER
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 WILHELM RADERMACHER filed Critical WILHELM RADERMACHER
Priority to DER92146D priority Critical patent/DE668465C/en
Application granted granted Critical
Publication of DE668465C publication Critical patent/DE668465C/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
    • C02F1/50Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment

Description

Die Reinigung von Abwässern aus Molkereien und ähnlichen Betrieben durch Aufkochen der Abwässer mit Torf unter Zusatz Sauerstoff abgebender Metalloxyde ist bekannt. Auch der Zusatz von Säuren bzw. saurer Salze, wie z. B. saurer Silicate, zu Molkereiabwässern und das spätere Versetzen mit Kalk ist schon vorgeschlagen worden. Demgegenüber besteht die vorliegende Erfin dung darin, die Fäulnis von Molkereiabwässern zu verhindern, indem die Abwässer mit Gerbstoffen versetzt werden. Durch diesen Zusatz werden die in den Abwässern vorhandenen Eiweißstoffe, insbesondere das Casein, gehärtet und, wie sich gezeigt hat, für das Gedeihen von Fäulnisbakterien ungeeignet. The purification of waste water from dairies and similar operations by boiling it sewage with peat with the addition of oxygen-releasing metal oxides is known. The addition of acids or acidic salts, such as. B. acidic silicates, too Dairy sewage and the subsequent addition of lime has already been proposed. In contrast, the present inven tion consists in the putrefaction of dairy waste water to prevent by adding tannins to the wastewater. This addition removes the existing in the wastewater Proteins, especially casein, are hardened and, as has been shown, unsuitable for putrefactive bacteria to thrive.

Die als Schlamm aus den Wässern abgeschiedene gehärtete Masse wird jeweils nach einigen Tagen von der Kläranlage ausgeräumt. The hardened mass separated as sludge from the waters is in each case after cleared from the sewage treatment plant for a few days.

Da die meisten Molkereien landwirtschaftliche Zwergbetriebe sind, stellt das neue Verfahren wirtschaftlich einen wesentlichen Fortschritt dar. Auch technisch war die Frage der Reinigung von Molkereiabwässern bisher noch nicht gelöst. Die meisten zu diesem Zwecke 'errichteten Kläranlagen erreichen das Gegenteil, des gewollten Zweckes. Sie ver-Ursachen Geruchsbelästigungen infolge Gärung oder Fäulnis des Caseins und eine starke Sauerstoffzehrung und Ansäuerung in der Vorflut.Since most dairies are small-scale farms, the new process represents represents a significant economic advance. The question of cleaning dairy wastewater has also been a technical issue up to now not resolved yet. Most wastewater treatment plants built for this purpose achieve this The opposite of the intended purpose. They cause unpleasant odors as a result of fermentation or putrefaction of the casein and a strong oxygen depletion and acidification in the Receiving flood.

Eine biologische Behandlung von Molkereiabwasser ist schwierig, wenn nicht unmöglich, 3^ da die Milchsäure, die aus der Vergärung des Milchzuckers entsteht, das biologische Leben abtötet. Demgegenüber gibt die vorliegende Erfindung die Möglichkeit, durch Zusatz von Gerbstoffen Molkereiabwasser zu reinigen, d. h. die Fäulnisfähigkeit des Abwassers und des ausgefällten Schlammes bei vollkommen geruchfreiem Betrieb zu beseitigen.Biological treatment of dairy waste water is difficult, if not impossible, 3 ^ since the lactic acid, which arises from the fermentation of milk sugar, kills biological life. In contrast, the present invention makes it possible to purify dairy wastewater by adding tannins, ie to remove the putrefactive properties of the wastewater and the precipitated sludge while operating completely odorless.

Man hat zwar schon Gerbstoffe für Abwässer der Wollwäschereien, Mälzereien, Stärkefabriken oder Blutabwässer verwendet, um Eiweißstoffe daraus auszufällen und als Niederschläge abzutrennen und z. B. als Viehfutter zu gewinnen.They already have tannins for wastewater from wool laundries, maltings, Starch factories or blood effluents are used to precipitate proteins from them and as Separate precipitation and z. B. to gain as fodder.

Demgegenüber war es bei der Behandlung von Molkereiabwässern überraschend, daß die sehr lästige Fäulnis der an sich sehr verdünnten Eiweißstoffe mit Erfolg durch Zugabe von Gerbstoffen verhindert werden kann, ohne daß es einer Entfernung der Eiweißstoffe ^5 bedarf.In contrast, it was surprising in the treatment of dairy wastewater that the very troublesome putrefaction of the very dilute proteins with success by adding them of tannins can be prevented without removing the protein ^ 5 requirement.

Der Zusatz von Gerbstoffen kann sowohl in flüssiger als auch in fester Form erfolgen. Die Anwendung mineralischer Gerbstoffe hat sich als vorteilhaft erwiesen, jedoch können auch andere Gerbstoffe Verwendung finden.The addition of tanning agents can take place both in liquid and in solid form. The use of mineral tanning agents has proven advantageous, but can other tannins can also be used.

Claims (1)

Patentanspruch:Claim: Verwendung von Gerbstoffen zum Verhindern der Fäulnis von Molkereiabwässern. Use of tannins to prevent putrefaction in dairy sewage.
DER92146D 1934-12-16 1934-12-16 Prevention of putrefaction of dairy waste water Expired DE668465C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER92146D DE668465C (en) 1934-12-16 1934-12-16 Prevention of putrefaction of dairy waste water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER92146D DE668465C (en) 1934-12-16 1934-12-16 Prevention of putrefaction of dairy waste water

Publications (1)

Publication Number Publication Date
DE668465C true DE668465C (en) 1938-12-03

Family

ID=7418704

Family Applications (1)

Application Number Title Priority Date Filing Date
DER92146D Expired DE668465C (en) 1934-12-16 1934-12-16 Prevention of putrefaction of dairy waste water

Country Status (1)

Country Link
DE (1) DE668465C (en)

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