DE692827C - Process for cleaning up dairy waste water - Google Patents
Process for cleaning up dairy waste waterInfo
- Publication number
- DE692827C DE692827C DE1936C0051735 DEC0051735D DE692827C DE 692827 C DE692827 C DE 692827C DE 1936C0051735 DE1936C0051735 DE 1936C0051735 DE C0051735 D DEC0051735 D DE C0051735D DE 692827 C DE692827 C DE 692827C
- Authority
- DE
- Germany
- Prior art keywords
- water
- waste water
- cleaning
- dairy waste
- dairy
- 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
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F1/00—Fertilisers made from animal corpses, or parts thereof
- C05F1/007—Fertilisers made from animal corpses, or parts thereof from derived products of animal origin or their wastes, e.g. leather, dairy products
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
- Y02P20/145—Feedstock the feedstock being materials of biological origin
Description
'.CJI735'.CJI735
Die Abwässer der Molkereien bestehen aus Fußbodenspülwasser, Spülwasser, herrührend von der Reinigung der Kannen und Flaschen sowie anderer Milchaufbewahrungs- und -transportbehälter, Spülwasser von den Kühl- und Pasteurisierungsanlagen und schließlich aus Butterwaschwasser, bei dem in der Regel wieder zu unterscheiden ist zwischen erstem und zweitem Butterwaschwasser.The wastewater of the dairies consists of floor rinsing water, rinsing water, originating from cleaning the jugs and bottles as well as other milk storage and transport containers, rinsing water from the cooling and pasteurization systems and finally from butter washing water, in which usually A distinction must again be made between the first and second butter washing water.
ίο Diese Abwässer, die bis jetzt fast in allen Fällen unbehandelt in die Vorfluter abgelassen wurden, machen sich sehr unangenehm bemerkbar, da sie besonders in der warmen Jahreszeit wegen ihres Eiweißgehaltes schwefelwasserstoff- und ammoniakhaltige Gase entwickeln. Weiter setzen sich in mit solchem Abwasser besc'hickten Vorflutern alsbald schleimige Schlammschichten ab, die schon deshalb von Übel sind, .weil sie willkommene Nährböden für allerlei unerwünschte Keime sind, und schließlich trüben sich die Gewässer erheblich durch die in den Molkereiabgängen enthaltenen Fettstoffe.ίο This sewage, which until now almost in all Cases that are left untreated into the receiving waters make themselves very uncomfortable noticeable, as they are especially in the warm season due to their protein content hydrogen sulfide and evolve gases containing ammonia. Further waters covered with such sewage soon settle slimy layers of mud, which are bad because they are welcome Are breeding grounds for all sorts of undesirable germs, and finally the waters become cloudy considerably due to the fatty substances contained in the dairy waste.
Man hat es deshalb nicht an praktischen Versuchen fehlen lassen, um mit Hilfe von
biologischen und chemischen Verfahren in Kläranlagen eine Reinigung vorzunehmen. So
sind z. B. auch Eisen- und Aluminiumsalze, die auch in der sonstigen Abwässerreinigungstechnik,
z.B. als Ferrisulfat ev. im Gemisch mit Aluminiumsulfat als Fällungsmittel,
bekannt sind, angewandt worden. Es hat sich dabei jedoch ergeben, daß die Anwendung
dieser Verbindungen und Verfahren • nicht zu dem gewünschten Erfolge führte, da
Molkereiabwässer eine besondere Stellung einnehmen und demzufolge auch eine besondere
Technik verlangen.
. Es hat sich gezeigt, daß als störender Faktor insbesondere das Butterwaschwasser zu
betrachten ist, das infolge seines Gehaltes an Fett- und sonstigen Stoffen einer Flockung
starke Hindernisse bereitet. Diese hindernde Wirkung der Butterwaschwässer tritt um so
stärker in Erscheinung, als der saure Charakter der Molkereiabwässer die Flockung an
sich schon erschwert.There has therefore been no lack of practical attempts to carry out cleaning with the help of biological and chemical processes in sewage treatment plants. So are z. B. iron and aluminum salts, which are also known in other wastewater treatment technology, eg as ferric sulfate, possibly mixed with aluminum sulfate as a precipitant, have been used. It turned out, however, that the use of these compounds and processes did not lead to the desired success, since dairy wastewater occupies a special position and consequently also requires a special technology.
. It has been shown that the butterwashing water in particular is to be regarded as a disturbing factor, which, due to its content of fat and other substances, presents severe obstacles to flocculation. This hindering effect of the butter washes is all the more apparent as the acidic character of the dairy waste water makes flocculation more difficult in itself.
Man kann also erfindungsgemäß zu einer ausreichenden und vollständigen Unschädlichmachung von Molkereiabwässern dann gelangen, wenn man ihnen die ersten Butterwaschwässer fernhält. Diese können dann nach anderen Verfahren für sich gereinigt werden. Wenn man so vorgeht, ergibt sich beispielsweise bei Verwendung von Eisen- und Aluminiumsalzen eine rasche und ausreichende Flockung.According to the invention, it is therefore possible to render it sufficiently and completely harmless from dairy wastewater then arrive when you give them the first butter washes keep away. These can then be cleaned separately using other methods. If you do that, it surrenders For example, when using iron and aluminum salts, a quick and sufficient one Flocculation.
Die Molkereiabwässer werden also, gesondert vom ersten Butterwaschwasser, in einem * geeigneten Fällungsgefäß gesammelt, woraufThe dairy waste water is separated from the first butter wash water in a * collected suitable precipitation vessel, whereupon
*) Von dem Patentsucher ist als der Erfinder angegeben worden:*) The patent seeker stated as the inventor:
Dr.-Ing. Karl UhI in Wiesbaden-Biebrich.Dr.-Ing. Karl UhI in Wiesbaden-Biebrich.
die Ausfällung vorgenommen werden kann, wofür Aluminiumsulfat oder Ferrisulfat als besonders gut geeignet gefunden wurden.the precipitation can be carried out, for which aluminum sulfate or ferric sulfate as have been found particularly suitable.
Die Anwendung von Ferrisulfat hat den Vorteil, daß nach erfolgter Flockung keine Oxydation der nichtverbrauchten Eisenionen mehr stattfinden kann, wie dies bei Anwendung von Ferrosulfat der Fall ist. Bei Anwendung von Ferrisulfat kann daher im Ge- gensatz zu der bereits bekannten Anwendung von Ferrosulfat keine nachträgliche Ausflockung von Eisensulfat im Vorfluter stattlinden. The use of ferric sulfate has the advantage that after flocculation no Oxidation of the unused iron ions can take place more, as this occurs with application of ferrous sulfate is the case. When using ferric sulphate, therefore, in general In contrast to the already known use of ferrous sulfate, no subsequent flocculation of iron sulphate in the receiving water.
Es hat sich allerdings gezeigt, daß bei Verwendung von Aluminiumsulfat die Flockung im allgemeinen rascher als mit Ferrisulfat eintritt und daß sich andererseits die Flocken bei der Aluniiniumsulfatbehandlung manchmal zum Teil an der Oberfläche sammeln. In solchen Fällen ist es von Vorteil, das Ausflocken durch Anwendung eines Gemisches von Ferrisulfat und Aluminiumsulfat zu bewirken. However, it has been shown that flocculation occurs when using aluminum sulfate generally occurs faster than with ferric sulphate and that, on the other hand, the flakes sometimes collect partly on the surface during the aluminum sulphate treatment. In In such cases it is advantageous to use a mixture to prevent the flocculation of ferric sulfate and aluminum sulfate.
Die1 Ausflockung der in den Spülwässern enthaltenen Stoffe kann in größeren Absitzbehältern, wie sie in der Abwasserreinigungstechnik verwendet werden, vorgenommen werden. Der auf dein Boden sich ansammelndeThe 1 flocculation of the substances contained in the rinsing water can be carried out in larger sedimentation tanks, such as those used in wastewater treatment technology. The one that accumulates on your ground
Schlamm wird von Zeit_zu Zeit entfernt und kann z. B. als Düngemittel Verwendung finden.Mud is removed from time_to time and can e.g. B. find use as fertilizer.
-Zu 5000 Litern eines Molkereiabwassers, bestehend aus 1000 Litern zweitem Butterwaschwasser, 400 Litern Kühlerspülwasser, 2100 Litern Fußbodenspülwasser, 500 Litern Kannenspülwasser und 1000 Litern Spülwasser von Käsewannen, Magermilchtanks usw. wurden 5 kg einer Mischung von 60 Teilen Aluminiumsulfat Al2(SO4)3 und 40 Teilen Ferrisulfat Fe2 (SO4)3, gelöst in 50 Litern Wasser, zugesetzt. Nach 5 Minuten haben sich bereits etwa 3 cm der obersten Flüssigkeitsschicht geklärt. 3/4 Stunden später ist das Absitzen der Flocken praktisch beendet.- To 5000 liters of a dairy wastewater, consisting of 1000 liters of second butterwash water, 400 liters of radiator rinse water, 2100 liters of floor rinse water, 500 liters of jug rinse water and 1000 liters of rinse water from cheese vats, skimmed milk tanks, etc., 5 kg of a mixture of 60 parts of aluminum sulfate Al 2 (SO 4 ) 3 and 40 parts of ferric sulfate Fe 2 (SO 4 ) 3 , dissolved in 50 liters of water, were added. After 5 minutes, about 3 cm of the top layer of liquid has cleared. 3/4 hours later, the settling of the floc is practically finished.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1936C0051735 DE692827C (en) | 1936-04-24 | 1936-04-24 | Process for cleaning up dairy waste water |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1936C0051735 DE692827C (en) | 1936-04-24 | 1936-04-24 | Process for cleaning up dairy waste water |
Publications (1)
Publication Number | Publication Date |
---|---|
DE692827C true DE692827C (en) | 1940-06-27 |
Family
ID=7027459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1936C0051735 Expired DE692827C (en) | 1936-04-24 | 1936-04-24 | Process for cleaning up dairy waste water |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE692827C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0616978A1 (en) * | 1993-03-25 | 1994-09-28 | Steag Ag | Process and precipitant for separating organic pollutants from waste water |
-
1936
- 1936-04-24 DE DE1936C0051735 patent/DE692827C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0616978A1 (en) * | 1993-03-25 | 1994-09-28 | Steag Ag | Process and precipitant for separating organic pollutants from waste water |
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