Entwicklung eines Verfahrens zur Konditionierung schwer entwaesserbarer Schlaemme mittels Elektrokoagulation. Stufe 2 Konstruktion und Bau einer Pilotanlage und deren Betrieb unter praxisnahen Bedingungen

The object of this phase 2 of the three-phase project was to investigate the possibilities of optimization of using electrocoagulation for the treatment of sewage sludge and paint sludge in continuously working cells. It was aimed to achieve a flux of 100 l/h by a cell volume of 10 l. Depending on the type of sludge and the assigned dewatering processes, different kinds of cells are proposed: modules with sheets for sewage sludge sedimentation, modules with narrow distant sheets for paint sludge clarification, cylindrical modules for sewage sludge filtration. The operation parameters for the different kinds of cells have been optimized. The efficiency of electrocoagulation is increased at changing the operation from batch-type cells to continuously working modules. For phase 3 a further development of modules with sheets is proposed. (WEN)SIGLEAvailable from TIB Hannover: RR 2035(40065)+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany)DEGerman

Verbesserung von Fest/Fluessig-Trennverfahren unter Zusatz elektrokinetischer und akustischer Felder: Bau und Betrieb einer Laborapparatur Abschlussbericht

Aim of the project done in co-operation of Battelle and the Institute of 'Mechanische Verfahrenstechnik und Mechanik' (MVM) of the University of Karlsruhe (TH) has been to enhance dewatering by applying additional electrical and acoustical fields. First of all, potential fields of application as well as the state-of-the-art of dewatering apparatus have been compiled as a basis. For different kinds of material characteristic parameters and data have been evaluated using an optimised laboratory device. This device can be utilised to measure the effects obtained by applying both electrical and acoustical fields during a filtration. As concerns the technical integration of the technology into the dewatering process the potential of modifying already existing aggregates has been examined. In order to find out problems during technical realisation of that procedure, tests have been performed using parts of the equipment and different kinds of material, so that in the end engineering parameters and constructive measures could already be included into the design. After several iterations of design and tests, finally, three different devices have been constructed or modified and tested to elaborate economical and technical data for relevant products. These data have been used to derive the effectiveness of the process and special characteristics of the so treated products. Furthermore, by comparing to data of conventional procedures as assessment can be performed about economical advantages, savings of energy, and reduction of CO_2-emission. Laboratory test results have been verified successfully in the technical scale using a chamber filter press with integrated electrodes. The function and effectiveness of this device has been tested in an urban sewage sludge treatment plant. During the tests the arrangement of electrodes has been modified. The results show that a main parameter for the dewatering procedure is the concentration and kind of polymer flocculent and the resulting structure of the flocs. Furthermore, a belt filter press has been constructed that can be used for electrokinetic dewatering. This press has been used for continuous operation, with as well as without, applying the electrical field to derive the effectiveness from the differences. The third test device was a bag filter press that has been supplied with electrodes. The results show that the effectiveness of a chamber filter press as well as of a belt filter press can be enhanced by supplying additional fields. (orig.)SIGLEAvailable from TIB Hannover: F00B461+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung und Forschung (BMBF), Bonn (Germany)DEGerman

Erhoehung der Oekoeffizienz in mittleren und kleinen Abwasserbeseitigungssystemen. Teil 1 und Teil 2 Abschlussbericht

Published in two volumesAvailable from TIB Hannover: F03B1292 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Bildung und Forschung, Berlin (Germany)DEGerman

Theoretische Voruntersuchung und Bewertung des Wissenstandes zum Bruchverhalten und zur Aktivitaetsfreisetzung von HTR-BE im Hinblick auf Stoerfaelle mit Gebindeabsturz im Endlager Abschlussbericht

With 54 tabs., 45 figs.SIGLEAvailable from TIB Hannover: FR 5815 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Entwicklung eines Verfahrens zur Konditionierung schwer entwaesserbarer Schlaemme mittels Elektrokoagulation Stufe 1: Versuche mit Laborapparaturen zur Ermittlung von Leistungsdaten

Available from TIB Hannover: FR 5914+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

Wasserfreie Konditionierung von Iodsorptionsmaterial Abschlussbericht

SIGLEAvailable from TIB Hannover: FR 6704 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Ermittlung von Verteilungskoeffizienten und kinetischen Daten ausgewaehlter Spaltprodukte mit der analytischen Ultrazentrifuge Abschlussbericht. Laufzeit: 1.1.1984-31.12.1986

SIGLETIB: FR 397+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Verwertung von Reststoffen aus der Wiederaufarbeitung

Available from GRM Werbeberatung - Werbemittlung - PR, Eggenstein-Leopoldshafen (DE) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman