DE4421522A1 - Removal of finely dispersed organic matter from precleaned sewage - Google Patents

Removal of finely dispersed organic matter from precleaned sewage

Info

Publication number
DE4421522A1
DE4421522A1 DE4421522A DE4421522A DE4421522A1 DE 4421522 A1 DE4421522 A1 DE 4421522A1 DE 4421522 A DE4421522 A DE 4421522A DE 4421522 A DE4421522 A DE 4421522A DE 4421522 A1 DE4421522 A1 DE 4421522A1
Authority
DE
Germany
Prior art keywords
finely dispersed
sewage
organic matter
flocculant
precleaned
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.)
Withdrawn
Application number
DE4421522A
Other languages
German (de)
Inventor
Walter Weiler
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.)
Aqseptence Group GmbH
Original Assignee
Passavant Werke AG and Co KG
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 Passavant Werke AG and Co KG filed Critical Passavant Werke AG and Co KG
Priority to DE4421522A priority Critical patent/DE4421522A1/en
Publication of DE4421522A1 publication Critical patent/DE4421522A1/en
Withdrawn legal-status Critical Current

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
    • C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56—Macromolecular compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents

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)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

Process of precleaning sewage in a sepn. stage, where light organic matter is present in a fine distribution, a polymer flocking agent is added in a vol. and type which is takes up the matter automatically over a give time span.

Description

Die Erfindung bezieht sich auf die Nachbehandlung von Abwässern, die in einem nach dem Schwerkraftprinzip arbeitenden Abscheider gereinigt worden sind. Derartige Abscheider sind in der Lage, auch feindispers verteilte Leichtflüssigkeiten, wie z. B. aus Spülmaschinen stammende Speisefette, zurückzuhalten. Ein geringer Anteil der Leichtstoffe kann sogar mehr oder weniger temporär stabil emulgiert vorliegen. Die Aufgabe, diese in der Abscheidestufe nicht abscheidbaren Leichtstoffe mit geringstmöglichem Aufwand abzutrennen, wird gemäß der Erfindung nunmehr dadurch gelöst, daß in der Nachbehandlungsstufe polymere Flockungshilfsmittel eingesetzt werden, und zwar in einer von dem Abwasser über einen bestimmten Zeitraum selbst entnehmbaren Menge und Form. The invention relates to the aftertreatment of waste water, the separators working on the principle of gravity have been cleaned. Such separators are able to, too finely dispersed light liquids, such as B. from Dishwasher-safe edible fats to withhold. A little The proportion of light materials can even be more or less temporary are stable emulsified. The task of this in the Separation stage with non-separable light materials To separate the least possible effort is done according to the invention now solved in that in the aftertreatment stage polymer Flocculants are used in one of them Waste water self-extractable over a certain period of time and shape.  

Die polymeren Flockungshilfsmittel bewirken eine Ladungsumkehr der feindispergierten Partikel und damit eine Überführung in abscheidbare Form. Mit der Zurverfügungstellung dieser Mittel als selbstlösende Chemikalie wird eine teure und wartungsintensive Dosieranlage gespart. Wenn der Austausch des Flockungshilfsmittelträgers zeitlich vorgegeben wird, ist immer eine ausreichende Nachreinigung sichergestellt. Auf diese Weise wird mit einfachen Mitteln die im Anhang 49 zu § 7a Wasserhaushaltsgesetz geforderte Restfracht von 20 mg/l Kohlenwasserstoffe (gesamt) zuverlässig eingehalten. Der Verbrauch kann erfindungsgemäß gestreckt werden, wenn dem Flockungshilfsmittel ein die Lösung im Abwasser verzögerndes Agens beigemischt wird. Das Flockungshilfsmittel wird vorzugsweise in Form einer Tablette oder dgl. zur Verfügung gestellt. Es ist auch denkbar, einen offenporigen Schaumeinsatz zu verwenden, der mit dem Flockungshilfsmittel belegt bzw. getränkt ist. Ein solcher Einsatz ist nach Verbrauch einfach zu entsorgen, weil er keine wassergefährdenden Stoffe enthält.The polymeric flocculants cause a charge reversal of the finely dispersed particles and thus a transfer into separable shape. With the provision of these funds as self-dissolving chemical becomes an expensive and maintenance-intensive Dosing system saved. If the exchange of the Flocculant carrier is always specified adequate post-cleaning is ensured. In this way the simple means described in Appendix 49 to § 7a Water balance law required residual load of 20 mg / l Reliable compliance with hydrocarbons (total). Of the Consumption can be stretched according to the invention if that Flocculant a retarding the solution in the wastewater Agent is added. The flocculant will preferably in the form of a tablet or the like posed. It is also conceivable to use an open-pore foam to be used with the flocculant or is soaked. Such use is easy to use dispose of it because it contains no water-polluting substances.

Claims (4)

1. Verfahren zum Nachbehandeln von in einem Abscheider vorgereinigten Abwässern, die insbesondere organische Leichtstoffe in feindisperser Verteilung enthalten, dadurch gekennzeichnet, daß in der Nachbehandlungsstufe polymere Flockungshilfsmittel eingesetzt werden, und zwar in einer von dem Abwasser über einen bestimmten Zeitraum selbstentnehmbaren Menge und Form.1. A process for the aftertreatment of waste water pre-cleaned in a separator, which in particular contains organic light substances in finely dispersed distribution, characterized in that polymeric flocculants are used in the aftertreatment step, in a quantity and form that can be removed from the waste water over a certain period of time. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Flockungshilfsmittel in einer durch- oder überströmten Tablette zur Verfügung gestellt wird.2. The method according to claim 1, characterized characterized in that the flocculant in a tablet with or through which it flows becomes. 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Flockungshilfsmittel an einem offenporigen Schaumstoffeinsatz angelagert zur Verfügung gestellt wird.3. The method according to claim 1, characterized characterized in that the flocculant an open-pore foam insert is available is provided. 4. Verfahren nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß das Flockungshilfsmittel ein seine Lösung im Abwasser verzögerndes Agens enthält.4. The method according to claim 1 to 3, characterized characterized in that the flocculant its solution contains a retarding agent in the waste water.
DE4421522A 1994-06-20 1994-06-20 Removal of finely dispersed organic matter from precleaned sewage Withdrawn DE4421522A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4421522A DE4421522A1 (en) 1994-06-20 1994-06-20 Removal of finely dispersed organic matter from precleaned sewage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4421522A DE4421522A1 (en) 1994-06-20 1994-06-20 Removal of finely dispersed organic matter from precleaned sewage

Publications (1)

Publication Number Publication Date
DE4421522A1 true DE4421522A1 (en) 1995-12-21

Family

ID=6521031

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4421522A Withdrawn DE4421522A1 (en) 1994-06-20 1994-06-20 Removal of finely dispersed organic matter from precleaned sewage

Country Status (1)

Country Link
DE (1) DE4421522A1 (en)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2442838A1 (en) * 1973-09-07 1975-03-13 Clarence H Roy FLOCKING AGENT
DE2543135A1 (en) * 1975-03-27 1976-10-14 Chemed Corp PROCESS FOR DISPERSING HIGH MOLECULAR POLYMERISATES IN WATER TREATMENT SYSTEMS AND DEVICES DETERMINED THEREFORE
DE2640905A1 (en) * 1975-09-12 1977-03-17 Anic Spa PROCESS FOR OCCLUDING SUBSTANCES OF DIFFERENT TYPES IN FINE FIBER STRUCTURES
DE2229426B2 (en) * 1971-07-30 1979-01-11 Hemlab Ag, Chur (Schweiz) Process for its manufacture
DE3128612A1 (en) * 1981-07-20 1983-01-27 Hilti AG, 9494 Schaan METHOD AND DEVICE FOR SEPARATING A FLUSHING LIQUID FROM SOLIDS
DE3221947A1 (en) * 1982-06-11 1983-12-22 Cassella Ag, 6000 Frankfurt METHOD FOR PRODUCING ADHESIVE OR ADHESIVE PARTICLES OF HYDROGEL POLYMERISATS
US4880547A (en) * 1975-06-30 1989-11-14 Kenji Etani Methods for water treatment
DD274406A1 (en) * 1988-07-27 1989-12-20 Akad Wissenschaften Ddr METHOD FOR PRODUCING FIBER-FORMED MEDIUM FOR FLOODING
DD274407A1 (en) * 1988-07-27 1989-12-20 Akad Wissenschaften Ddr FIBER-OVER MEDIUM TO FLOOD FLUID PARTICLES FROM LIQUID PHASE
DD274405A1 (en) * 1988-07-27 1989-12-20 Akad Wissenschaften Ddr FIBER-OVER MEDIUM TO FLOOD FLUID PARTICLES FROM LIQUID PHASE
DE3840670A1 (en) * 1988-12-02 1990-06-07 Ruediger Hesch Pressed mouldings of rigid polyurethane foam, process for their production and their use for absorbing oil

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2229426B2 (en) * 1971-07-30 1979-01-11 Hemlab Ag, Chur (Schweiz) Process for its manufacture
DE2442838A1 (en) * 1973-09-07 1975-03-13 Clarence H Roy FLOCKING AGENT
DE2543135A1 (en) * 1975-03-27 1976-10-14 Chemed Corp PROCESS FOR DISPERSING HIGH MOLECULAR POLYMERISATES IN WATER TREATMENT SYSTEMS AND DEVICES DETERMINED THEREFORE
US4880547A (en) * 1975-06-30 1989-11-14 Kenji Etani Methods for water treatment
DE2640905A1 (en) * 1975-09-12 1977-03-17 Anic Spa PROCESS FOR OCCLUDING SUBSTANCES OF DIFFERENT TYPES IN FINE FIBER STRUCTURES
DE3128612A1 (en) * 1981-07-20 1983-01-27 Hilti AG, 9494 Schaan METHOD AND DEVICE FOR SEPARATING A FLUSHING LIQUID FROM SOLIDS
DE3221947A1 (en) * 1982-06-11 1983-12-22 Cassella Ag, 6000 Frankfurt METHOD FOR PRODUCING ADHESIVE OR ADHESIVE PARTICLES OF HYDROGEL POLYMERISATS
DD274406A1 (en) * 1988-07-27 1989-12-20 Akad Wissenschaften Ddr METHOD FOR PRODUCING FIBER-FORMED MEDIUM FOR FLOODING
DD274407A1 (en) * 1988-07-27 1989-12-20 Akad Wissenschaften Ddr FIBER-OVER MEDIUM TO FLOOD FLUID PARTICLES FROM LIQUID PHASE
DD274405A1 (en) * 1988-07-27 1989-12-20 Akad Wissenschaften Ddr FIBER-OVER MEDIUM TO FLOOD FLUID PARTICLES FROM LIQUID PHASE
DE3840670A1 (en) * 1988-12-02 1990-06-07 Ruediger Hesch Pressed mouldings of rigid polyurethane foam, process for their production and their use for absorbing oil

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8139 Disposal/non-payment of the annual fee