10 Jahre Forschung fuer die Umwelt Jahresbericht 1989-91

Available from TIB Hannover: ZB 4109(1989/91) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

Industrieabwasserreinigung nach einem mehrstufigen Verfahren bestehend aus biologischer Reinigung mit Festbettreaktoren und bedarfsweise zugeschalteter Aktivkohleadsorption Schlussbericht

Packed bed reactors are used in effluent water treatment to remove difficult degradable chemical compounds. The targets of investigations were: Determination of hydraulic conditions in the packed bed, mass balance, reaction on stress loading, analytical identification of rest-COD. Following test methods were used: pressure loss-, tracer- and hold-up measurements, determination of biomass, TOC-, adsorption- and off-gas measurements, GC and MS analytic. Results: Mixing of waterphase is dependent on both water and air velocity and number of corresponding jets. The optimum distribution over the packed bed was found to be at a velocity of 3 m/h for water and 15 m/h for air. Based on results of these investigations the air/water distribution Tray should be modified in future design of packed bed reactors. Furfural and phenol were first adsorbed from the biofilm and then degraded. Low boiling solvents and hydrocarbons are mainly stipped out with air. The biomass is quickly adapted to stress loading, however, extremely high loads caused anaerobic areas in the reactor. Paraffinic hydrocarbons were significantly faster degraded than aromatic hydrocarbons. With this combinated system it is possible to treat successfully refinery effluent process water which may contain difficult degradable hydrocarbons as effluents from lube oil production. (orig.)Available from TIB Hannover: F94B965+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany)DEGerman

Gutachten zur Reinigung der Sickerwaesser der Deponie Georgswerder

SIGLETIB: FR 416 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Technische Universitaet Hamburg-Harburg, Arbeitsbereiche Gewaesserreinigungstechnik und Umweltschutztechnik. Bericht 1986

SIGLECopy held by FIZ Karlsruhe; available from UB/TIB Hannover / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Technische Universitaet Hamburg-Harburg, Arbeitsbereiche Gewaesserreinigungstechnik und Umweltschutztechnik. Bericht 1988

SIGLETIB Hannover: ZB 4109(1988) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Entwicklung eines Verfahrens zur Aufbereitung von Schweineguelle Abschlussbericht

SIGLEAvailable from TIB Hannover: FR6989 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Neue biologische Verfahren zur Reinigung von Industrieabwaessern unter Verwendung thermophiler Denitrifikanten sowie aerob thermophiler Mikroorganismen Abschlussbericht

Waste water treatment with thermophilic microorganisms is interesting for the treatment of high temperatured industrial cut stream. Compounds of these cut streams which are purely degradabel with mesophilic microorganisms (fats e.g.) can be treated more effective with thermophilic microorganisms. Different isolates from natural sources (hot springs e.g.) and from industrial sites are investigated for their ability of the metabolism of main compounds (alkanes, fatty acids e.g.) under aerobic and anoxic conditions. The kinetic parameters had been identified. The reduction rates of nitrate was always faster then for nitrite for all investigated stains. With an isolate from a hot spring of island succeeded the degradation of a waste water from an oil mill (fatty acids, phenols) under aerobic conditions. It could be shown that the immobilisation of biomass is possible with the use of the precoating process. This is of a great interest for the technical application. Until now it is unknown if the microorganisms form biofilms. (orig.)SIGLEAvailable from TIB Hannover: F96B1393+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman

Biologische Umwandlung, Entgiftung und Abbau dioxinartiger Substanzen. Teilprojekt 4: Bioprozesstechnik fuer Abbaufaehigkeiten in mikrobiellen Lebensgemeinschaften Abschlussbericht

SIGLEAvailable from TIB Hannover: D.Dt.F.QN1(18,40) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany)DEGerman

Haeufigkeit des periodischen Wechsels von Umweltbedingungen als Mittel zur Beeinflussung der Populationsselektion in Belebungsanlagen Abschlussbericht

Available from TIB Hannover: F93B282 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

Neue Verfahren und Methoden zur Sanierung von Altlasten - am Beispiel der Deponie Georgwerder, Hamburg. T. 2: Behandlungsfluessigkeiten aus der Deponie Georgswerder. Untersuchungszeitraum 1989 - 1990

An extensive r and d project has been carried out for the treatment of the leachate of the industrial site Hamburg-Georgswerder. Investigations in a pilot plant with two biological fixed film reactors for the biological degradation of leachate compounds showed that more than 50% of the heavy and nonvolatile organic and chlorinated organic compounds could be degraded by adapted microorganisms from a municipal plant. The installation of a silicon membrane oxygenation system offered a stable oxygen supply to microorganisms, which degraded the largest amount of volatile compounds in particular of BTXE-aromates (>95%). Microbial investigations of the microbial population showed enzyme activities for the degradation of numerous groups of pollutants. The chosen Sequencing Batch Reaction (SBR) mode allowed high time volumetric rates for the nitrification. Especially to meet the requirements for chlorinated compounds of 250 #mu#gCl-/1 AOX an additional treatment process was necessary. Good results were obtained by activated carbon adsorption, which was installed behind the biological stage, with a high loading of over 100 gC/kg activated carbon. In additional laboratory experiments of biological regeneration of activated carbon good results were obtained specially with model substances. Laboratory experiments with a chemical oxidation between the two biological fixed film reactors offered an additional process to meet the requirements. On the basis of the results a recommendation for the technical realization of a biological treatment plant with a membrane oxygenation was made. (orig.)SIGLEAvailable from TIB Hannover: QN 82(2,1989-1990)+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany); Umweltbehoerde, Hamburg (Germany). Amt fuer AltlastensanierungDEGerman