DE4120211A1 - Post-treatment of waste water - comprises using polymeric flocculating agents in a form and amt. in which they are self removed from the waste water over a period of time - Google Patents

Post-treatment of waste water - comprises using polymeric flocculating agents in a form and amt. in which they are self removed from the waste water over a period of time

Info

Publication number
DE4120211A1
DE4120211A1 DE4120211A DE4120211A DE4120211A1 DE 4120211 A1 DE4120211 A1 DE 4120211A1 DE 4120211 A DE4120211 A DE 4120211A DE 4120211 A DE4120211 A DE 4120211A DE 4120211 A1 DE4120211 A1 DE 4120211A1
Authority
DE
Germany
Prior art keywords
waste water
post
time
amt
treatment
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Withdrawn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
DE4120211A
Other languages
German (de)
Inventor
Walter Dipl Ing 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 DE4120211A priority Critical patent/DE4120211A1/en
Publication of DE4120211A1 publication Critical patent/DE4120211A1/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Withdrawn legal-status Critical Current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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0202—Separation of non-miscible liquids by ab- or adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/04—Breaking emulsions
    • B01D17/045—Breaking emulsions with coalescers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/04—Breaking emulsions
    • B01D17/047—Breaking emulsions with separation aids
    • 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
    • C02F1/5227—Processes for facilitating the dissolution of solid flocculants in water

Abstract

Post treatment of waste water pre-purified in a coalescence separator and contg. finely dispersed dispersion of light wt. material. Polymeric flocculating agents are used in the post-treatment stage in an amt. and form, where they are self-removed from the waste water over a specific period of time. The agent is pref. used in a flow through or flow over tray, and is pref. used on an open pore foam liner. USE/ADVANTAGE - Used, e.g. in high pressure purificn. plants. Expensive and time consuming, dosing plants are not required.

Description

Die Erfindung bezieht sich auf die Nachbehandlung von Abwässern, die in einem Koaleszenz- oder Adsorptions-Koaleszenz-Abscheider gereinigt worden sind. Derartige Abscheider sind durch ihre Koaleszenz-Einsätze in der Lage, auch feindispers verteilte Leichtflüssigkeiten zurückzuhalten, die z. B. durch eine Hochdruckreinigungsanlage entstanden sind. Bei diesen Reinigungsanlagen wird durch hohe Temperatur und Druck so viel Energie auf die abzulösenden Leichtstoffe aufgebracht, daß sie in die disperse Zustandsphase überführt werden. Ein geringer Anteil der Leichtstoffe wird sogar mehr oder weniger stabil emulgiert. Die Aufgabe, diese in der Koaleszenzstufe 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. Die polymeren Flockungshilfsmittel bewirken eine Ladungsumkehr der Emulsion 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 der Flockungshilfsmitteldosis 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. Da die Menge des anfallenden Abwassers bei den Hochdruckreinigungsgeräten gering ist, ist eine chargenweise Nachreinigung mit geringem Verbrauch des Flockungshilfsmittels möglich. Der Verbrauch kann erfindungsgemäß noch weiter 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 invention relates to the aftertreatment of waste water, those in a coalescence or adsorption coalescence separator have been cleaned. Such separators are characterized by their Coalescence inserts capable of being evenly dispersed Retain light liquids, the z. B. by a High pressure cleaning system have arisen. With these Cleaning equipment is so much due to high temperature and pressure Energy applied to the light substances to be removed that they in the disperse state phase are transferred. A small percentage the light materials are even emulsified more or less stably. The Task of not being able to separate them in the coalescence stage Separating light materials with the least possible effort is according to the invention is now solved in that in the Post-treatment stage polymeric flocculants used in one of the wastewater over a certain one Period of self-extractable quantity and shape. The polymer  Flocculants cause the emulsion and charge to reverse thus a transfer into separable form. With the Providing these agents as a self-dissolving chemical an expensive and maintenance-intensive dosing system is saved. If the exchange of the flocculant dose is given in time adequate cleaning is always ensured. On 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). Because the crowd of the wastewater generated in the high-pressure cleaning devices is low is a batch cleaning with low consumption of the Flocculant possible. Consumption can be according to the invention be stretched even further if the flocculant is a Solution in the wastewater retarding agent is added. The Flocculant is preferably in the form of a tablet or Like. Provided. It is also conceivable to have one to use open-cell foam insert, which with the Flocculant is occupied or soaked. Such an effort is easy to dispose of after use because it does not contains water-polluting substances.

Claims (4)

1. Verfahren zum Nachbehandeln von in einem Koaleszenz-Abscheider vorgereinigten Abwässern, die 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 wastewater pre-cleaned in a coalescence separator, which contain 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 provided with a tablet that is flowed through or overflowed 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 die Flockungshilfsmittel ein ihre Lösung im Abwasser verzögerndes Agens enthalten.4. The method according to claim 1 to 3, characterized characterized in that the flocculant their solution in the waste water contains a retarding agent
DE4120211A 1991-06-19 1991-06-19 Post-treatment of waste water - comprises using polymeric flocculating agents in a form and amt. in which they are self removed from the waste water over a period of time Withdrawn DE4120211A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4120211A DE4120211A1 (en) 1991-06-19 1991-06-19 Post-treatment of waste water - comprises using polymeric flocculating agents in a form and amt. in which they are self removed from the waste water over a period of time

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4120211A DE4120211A1 (en) 1991-06-19 1991-06-19 Post-treatment of waste water - comprises using polymeric flocculating agents in a form and amt. in which they are self removed from the waste water over a period of time

Publications (1)

Publication Number Publication Date
DE4120211A1 true DE4120211A1 (en) 1992-12-24

Family

ID=6434283

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4120211A Withdrawn DE4120211A1 (en) 1991-06-19 1991-06-19 Post-treatment of waste water - comprises using polymeric flocculating agents in a form and amt. in which they are self removed from the waste water over a period of time

Country Status (1)

Country Link
DE (1) DE4120211A1 (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE707365C (en) * 1933-02-24 1941-06-19 Katadyn G M B H Process for the rapid, sustainable sterilization of liquids
DE2001250B2 (en) * 1969-01-14 1974-04-25 Michael Axton West Hanningfield Essex May (Grossbritannien) Tablet for treating water
DE2412452A1 (en) * 1974-03-15 1975-09-18 Benckiser Knapsack Gmbh PROCEDURE FOR REMOVING OILS, SOLVENTS AND PAINTING MATERIALS FROM WASTE WATER
DE2640905A1 (en) * 1975-09-12 1977-03-17 Anic Spa PROCESS FOR OCCLUDING SUBSTANCES OF DIFFERENT TYPES IN FINE FIBER STRUCTURES
DE2802861A1 (en) * 1977-01-31 1978-08-10 Rohm & Haas FLOCCULATING AGENT COMPOSITION AND METHOD FOR MANUFACTURING IT
DE2229426B2 (en) * 1971-07-30 1979-01-11 Hemlab Ag, Chur (Schweiz) Process for its manufacture
DE2037944B2 (en) * 1969-08-01 1980-11-20 Ciba-Geigy Ag, Basel (Schweiz) Process for removing a dissolved, emulsified or suspended dye, oil, fat or resin from water
EP0040457A2 (en) * 1980-04-28 1981-11-25 Alza Corporation Agent dispenser with microporous releasing diffusor
US4880547A (en) * 1975-06-30 1989-11-14 Kenji Etani Methods for water treatment

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE707365C (en) * 1933-02-24 1941-06-19 Katadyn G M B H Process for the rapid, sustainable sterilization of liquids
DE2001250B2 (en) * 1969-01-14 1974-04-25 Michael Axton West Hanningfield Essex May (Grossbritannien) Tablet for treating water
DE2037944B2 (en) * 1969-08-01 1980-11-20 Ciba-Geigy Ag, Basel (Schweiz) Process for removing a dissolved, emulsified or suspended dye, oil, fat or resin from water
DE2229426B2 (en) * 1971-07-30 1979-01-11 Hemlab Ag, Chur (Schweiz) Process for its manufacture
DE2412452A1 (en) * 1974-03-15 1975-09-18 Benckiser Knapsack Gmbh PROCEDURE FOR REMOVING OILS, SOLVENTS AND PAINTING MATERIALS FROM WASTE WATER
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
DE2802861A1 (en) * 1977-01-31 1978-08-10 Rohm & Haas FLOCCULATING AGENT COMPOSITION AND METHOD FOR MANUFACTURING IT
EP0040457A2 (en) * 1980-04-28 1981-11-25 Alza Corporation Agent dispenser with microporous releasing diffusor

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
JP 53-049853 Ref. 42973A/24 *
JP Patents Abstracts of Japan: JP 61-227885A., C-407, 1987, Bd.11, Nr.69, JP 61-161192A., C-390, 1986, Bd.10, Nr.366 *
Ref. aus Chem. Patents Index, Derwent Publ. LTD: AU 9053999-A Ref.90-376250/51 *

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