DE2259095A1 - Neutral effluent purifying agent - contains alkaline earth halides, ferric halide alkaline aluminate and polyacrylamide - Google Patents

Neutral effluent purifying agent - contains alkaline earth halides, ferric halide alkaline aluminate and polyacrylamide

Info

Publication number
DE2259095A1
DE2259095A1 DE19722259095 DE2259095A DE2259095A1 DE 2259095 A1 DE2259095 A1 DE 2259095A1 DE 19722259095 DE19722259095 DE 19722259095 DE 2259095 A DE2259095 A DE 2259095A DE 2259095 A1 DE2259095 A1 DE 2259095A1
Authority
DE
Germany
Prior art keywords
polyacrylamide
alkaline earth
pts
purifying agent
aluminate
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.)
Pending
Application number
DE19722259095
Other languages
German (de)
Inventor
Siegfried Oswald
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.)
KLUTHE KG CHEM WERKE
Original Assignee
KLUTHE KG CHEM WERKE
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 KLUTHE KG CHEM WERKE filed Critical KLUTHE KG CHEM WERKE
Priority to DE19722259095 priority Critical patent/DE2259095A1/en
Priority to FR7318451A priority patent/FR2187708B3/fr
Priority to GB2683173A priority patent/GB1382537A/en
Priority to IT2507473A priority patent/IT998128B/en
Publication of DE2259095A1 publication Critical patent/DE2259095A1/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D17/00Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02Separation of non-miscible liquids
    • B01D17/04Breaking emulsions
    • B01D17/047Breaking emulsions with separation aids
    • 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
    • C02F1/24Treatment of water, waste water, or sewage by flotation
    • 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
    • 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
    • C02F1/54Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • 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
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance

Landscapes

  • Chemical & Material Sciences (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)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

The agent contains (by wt) 81.5 pts. CaCl2, 10 pts. sodium aluminate, 8 pts. ferric chloride, 0.5 pts. polyacrylamide powder. The process operates without mixers and pressurised air is injected into the medium, the treatment being suitable for aqueous cleaning solutions, varnish, oil in water emulsions containing fats. The purified water is neutral and needs no further treatment before discharge.

Description

Mittel zur Reinigung von Abwässern unter gleichzeitiger Einleitung von Preßluft Das Stammpatent ........... (Patentanmeldung P 22 27 )64.9) bezieht sich auf ein in neutralem Medium wirkendes Mittel zur Reinigung von Abwässern durch Ausfällen bzw. Ausflocken der Verschmutzungen, das dadurch gekennzeichnet ist, daß es aus Erdalkalihalogenid, Eisen-(II1)-halogenid, Alkalialuminat sowie Polyacrylamid besteht. Agent for the purification of sewage with simultaneous discharge von Preßluft The parent patent ........... (patent application P 22 27) 64.9) refers to a means for the purification of wastewater acting in a neutral medium Precipitation or flocculation of the contamination, which is characterized in that it is made from alkaline earth halide, iron (II1) halide, alkali aluminate and polyacrylamide consists.

Es wurde nun überraschender;eise gefunden, daß vom Fachmann nicht vorherzusehende technische Vorteile erzielt werden, wenn man dieses Mittel zum Reinigen von Abwässern unter gleichzeitiger Einleitung von Preßluft in das zu reinigende Medium, anwendet.It has now been found, more surprisingly, that the person skilled in the art has not foreseeable technical advantages can be obtained when using this means for cleaning of waste water with simultaneous introduction of compressed air into the area to be cleaned Medium, applies.

Im folgenden wird der erzielte technische Fortschritt anhand von zwei Beispielen weiterhin erläutert, wobei das erste Beispiel die Anwendung des Reinigungsmittels ohne gleichzeiticgc Einleitung von Preßluft, und das zweite Beispiel die erfinalmgsgemäße Anwendung des Reinigungsmittels unter gleichzeitiger Einleitung von Preßluft beschreibt.In the following, the technical progress achieved is based on two Examples further explained, the first example the application of the cleaning agent without simultaneous introduction of compressed air, and the second example the according to the invention Application of the cleaning agent with simultaneous introduction of compressed air describes.

Beispiel 1 (Vergleichsbeispiel) Ein rechteckiger, 25 cbm fassender Behälter, der mit zwei starken Rührwerken versehen war, wurde je zur Hälfte mit ölhaltigen Waschwässern aus Reinigungsanlagen und Bohrölemulsionen gefüllt. Nach Einschalten der beiden Rührwerke, die eine intensive Durchmischung ergaben, wurde das Reinigungsmittel aus Erdalkalihalogenid, Eisen-(III)-halogenld, Alkalialuminat und Polyacrylamid in einer Konzentration von 0,3 Gew.-% zu gegeben. Nach einer Reaktionszeit von 30 Minuten, innerhalb der die Emulsion gespalten wurde, wurden die Rührwerke ausgeschaltet. Die durch die Spaltung gebildete Flocke flotierte zu ungefähr 60 % und bildete eine voluminöse Schicht, die durch geringe Bewegung der Oberfläche wieder in der Flüssigkeit verteilt werden konnte. Die restlichen 40 % waren in der gesamten Badflüssigkeit gleichmäßig verteilt. Bei dem notwendigen anschließenden Filtrationsprozeß führte diese sich nicht eindeutig orientierende Flocke zu einem Zusetzen des Filters und damit zu einer Verlängerung des Filtrationsvorganges, der im Durchschnit für 25 cbm 6 Stunden betrug.Example 1 (comparative example) A rectangular 25 cbm The container, which was equipped with two powerful agitators, was half with each oil-containing washing water from cleaning systems and drilling oil emulsions. To Switching on the two agitators, which resulted in intensive mixing, was The cleaning agent made from alkaline earth metal halide, iron (III) halide, alkali aluminate and polyacrylamide at a concentration of 0.3% by weight. After a reaction time of 30 minutes, during which the emulsion was broken, the stirrers were switched off. About 60 of the floc formed by the split floated % and formed a voluminous layer caused by slight movement of the surface could be redistributed in the liquid. The remaining 40% were in the evenly distributed throughout the bath liquid. With the necessary subsequent Filtration process resulted in this not clearly orienting flake to one Clogging of the filter and thus to an extension of the filtration process, the on average for 25 cbm was 6 hours.

Als Filter wurde ein Hydromationsfilter verwandt, das nach dem Unterdruckverfahren arbeitet. Das Filtervlies mußte wegen der starken Belastung durch die Flocke nach jedem cbm ausgewechselt werden, d. h. also für die Gesamtmenge 25 mal. Wenngleich diese Arbeitsweise an sich gegenüber dem Stand der Technik durchaus einen bedeutenden Fortschritt darstellt, so ist sie dennoch nicht optimal.A hydration filter was used as the filter, which works according to the negative pressure method is working. The filter fleece had to be replaced because of the heavy load from the flake be replaced every cbm, d. H. so for the total amount 25 times. Although this mode of operation in itself is quite significant compared to the prior art Represents progress, it is still not optimal.

Beispiel 2 (gemäß Erfindung) Auf dem Boden des gleichen rechteckigen Behälters mit einem Fassungsvermögen von 25 cbm, >-lrde eine Preßluftleitung gelegt, deren Durchmesser 1,875 cm beträgt, Das Rohr war an verschiedenen Stellen angebohrt, um eine möglichst gleichmäßige I,uftverteilung im gesamten Bad zu erreichen. Der Luftdruck betrug 6 atü. Die Rührwerke wurden vom Behälter abgeklemmt.Example 2 (according to the invention) On the bottom of the same rectangular Container with a Capacity of 25 cbm,> -lrde one Compressed air line laid, the diameter of which is 1.875 cm, the pipe was on different Areas drilled to ensure that the air is distributed as evenly as possible throughout the bathroom to reach. The air pressure was 6 atm. The agitators were disconnected from the container.

Der so vorbereitete Behälter wurde mit der gleichen Mischung wie unter Beispiel 1 beschrieben gefüllt, die Preßluft eingeschaltet, die gleichmäßige Turbulenz in die Fliissigkeit brachte, und dann die gleiche Menge an dem gleichen Reinigungsmittel wie in Beispiel 1 beschrieben, zugegeben. Nach einer Reaktionszeit von 15 Minuten wurde die Preßluft abgeschaltet und es bildete sich spontan, d. h. innerhalb von 1 - 2 Minuten auf der Badoberfläche ein dichter Ülteppich, der eine zähe, fast gummiartige Konsistenz besaß. Die darunter stehende Flüssigkeit war leicht trüb. Olhaltige Flokken waren makrooptisch kaum feststellbar. Der aufsteigende Olteppich konnte von der Oberfläche mit geeigneten Abskimeinrichtungen entfernt werden. Selbst bei intensiver Bewegung der Badoberfläche konnte der Ölteppich nicht mehr in der Flüssigkeit verteilt werden. Bei der anschließenden Filtration, wurden folgende Ergebnisse erzielt: Innerhalb von einer Minute lief durch das Filter 1 cbm der gereinigten Flüssigkeit. Die Gesamtfiltrationszeit für 25 cbm betrug 35 Minuten. Hiervon waren 25 Minuten reine Filterzeit.The container thus prepared was filled with the same mixture as below Example 1 described filled, the compressed air switched on, the uniform turbulence into the liquid, and then the same amount of the same detergent as described in Example 1, added. After a reaction time of 15 minutes the compressed air was switched off and it formed spontaneously, d. H. within For 1 - 2 minutes a thick carpet of oil on the surface of the bath, which is tough, almost rubbery Consistency. The liquid below was slightly cloudy. Oily flakes were hardly detectable macro-optically. The ascending carpet of oil could from the Surface can be removed with suitable skimming equipment. Even with more intense Movement of the bath surface could no longer distribute the oil slick in the liquid will. In the subsequent filtration, the following results were achieved: Inside 1 cbm of the purified liquid ran through the filter for one minute. The total filtration time for 25 cbm was 35 minutes. 25 minutes of this was pure filter time.

Das Filtervlies mußte für die Gesamtmenge 2 mal gewechselt werden. Hierfür wurden jeweils 5 Minuten, also insgesamt 10 Minuten Zeit benötigt. Die Wasserqualität war ebenfalls deutlich verbessert, das Wasser war klarer.The filter fleece had to be changed twice for the total amount. This took 5 minutes each time, for a total of 10 minutes. The water quality was also significantly improved, the water was clearer.

Als Ergebnis dieser beiden Beispiele ist unter anderem festzuhalten, daß beim Beispiel 1, bei sonst gleichen Bedingungen, eine Filtrationszeit von 6 Stunden und ein 25-facher Filterwechsel, beim Beispiel 2 jedoch nur eine Filtrationszeit von 35 Minuten und ein 2-maliger Filterwechsel erforderlich war.As a result of these two examples it can be stated, among other things, that in example 1, under otherwise identical conditions, a filtration time of 6 hours and a 25-fold filter change, in example 2, however, only one filtration time of 35 minutes and a 2-time filter change was required.

Die erfindungsgemäße Anwendung der Preßluft erfüllt hierbei zumindestens zwei unktionen: a) Sie wirkt als mischendes Medium, wodurch die Einsparung der Rührwerke ermöglicht wird; b) sie bewirkt eine Verdickung und Stabilität der Öl-/Tensidflocke und damit eine sprunghaft verbesserte Filtrationsfähigkeit und eine größere Reinheit des beim Filtrationsprozeß abfließenden Wassers.The application of the compressed air according to the invention at least fulfills this two functions: a) It acts as a mixing medium, which saves on agitators is made possible; b) it causes thickening and stability of the oil / surfactant flake and with it a dramatically improved filtration ability and greater purity of the water flowing off during the filtration process.

Claims (2)

P a t e n t a n s p r ü c h eP a t e n t a n s p r ü c h e 1. In neutralem Medium wirkendes Mittel zur Reinigung von Abwässern durch Ausfällen bzw. Ausflocken der Verschmutzungen, das aus Erdalkalihalogenid, Eisen-(III)-halogenid, Alkalialuminat sowie Polyacrylamid besteht nach Patent.........1. Agent for the purification of wastewater that acts in a neutral medium due to precipitation or flocculation of the contamination, which is made up of alkaline earth metal halide, Iron (III) halide, alkali aluminate and polyacrylamide exist according to patent ......... (Patentanmeldung P 22 27 364.9), dadurch gekennzeichnet, daß nian es zusammen mit Preßluft, die in daß zu reinigende-Medium eingeleitet wird, anwendet. (Patent application P 22 27 364.9), characterized in that nian it applies together with compressed air which is introduced into the medium to be cleaned. 2. Anwendung des Reinigungsmittels nach Anspruch 1, dadurch gekennzeichnet, daß ohne Rührwerke gearbeitet wird.2. Application of the cleaning agent according to claim 1, characterized in that that work is carried out without agitators.
DE19722259095 1972-06-06 1972-12-02 Neutral effluent purifying agent - contains alkaline earth halides, ferric halide alkaline aluminate and polyacrylamide Pending DE2259095A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE19722259095 DE2259095A1 (en) 1972-12-02 1972-12-02 Neutral effluent purifying agent - contains alkaline earth halides, ferric halide alkaline aluminate and polyacrylamide
FR7318451A FR2187708B3 (en) 1972-06-06 1973-05-22
GB2683173A GB1382537A (en) 1972-06-06 1973-06-05 Composition for the purification of waste water
IT2507473A IT998128B (en) 1972-06-06 1973-06-12 SUBSTANCE FOR THE PURIFICATION OF WASTE WATER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722259095 DE2259095A1 (en) 1972-12-02 1972-12-02 Neutral effluent purifying agent - contains alkaline earth halides, ferric halide alkaline aluminate and polyacrylamide

Publications (1)

Publication Number Publication Date
DE2259095A1 true DE2259095A1 (en) 1974-06-06

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DE (1) DE2259095A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4100685A1 (en) * 1991-01-11 1992-07-16 Sued Chemie Ag METHOD FOR CLEANING WATER CONTAINING PHOSPHATES AND NITROGEN COMPOUNDS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4100685A1 (en) * 1991-01-11 1992-07-16 Sued Chemie Ag METHOD FOR CLEANING WATER CONTAINING PHOSPHATES AND NITROGEN COMPOUNDS

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