Erhoehung der Reinigungsleistung bei der Mitbehandlung von Faekalabwaessern und -schlaemmen sowie internen Prozessabwaessern in einer kommunalen Klaeranlage durch Zwischenspeicherung Abschlussbericht

For the wastewater treatment plant of Cottbus a new concept to the handling and managing has been developed, in which the application of an analysis- and consulting system and a simulation model is included. The aim is to optimize the operation and the increase of stability of the operation, including a performance depending addition of process seal water from the sludge treatment and fecal wastewater. After the completion of the biology and executed the sludge treatment an extensive test program was completed. Thereby the advantages of both from each other independent streets have been used. Different operating conditions could be compared directly with each other. The results of the test series and the resulting conclusions for the operating optimization are described in this report in detail. Especially significant is therefore the relative equalization including a performance depending addition of process seal water from the sludge. So the statutory requirements could not only be observed surely, but thereupon for the total nitrogens they are far below. Furthermore, different experiences in handling of mixed wastewater inflow (intermediate storage by rain events) and in the phosphat elimination could be made. Potentially, this has positive consequences for the interpretation of observed data and the to be payed sewage tax. (orig.)SIGLEAvailable from TIB Hannover: F98B1852+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman

Critical points in relaxed deposit problems

SIGLEAvailable from TIB Hannover: RR 7760(1998,9) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Minimalfolgen in klassenbeschraenkten Depotproblemen (Neufassung)

Available from TIB Hannover: RR 7760(2001,2) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

Relaxierte Depotprobleme mit Phasenbeschraenkungen

Available from TIB Hannover: RR 7760(1998-13) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

Optimal control problems with a first-order PDE system - necessary and sufficient optimality conditions

SIGLEAvailable from TIB Hannover: RR 7760(2001,16) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

The direct solution of nonconvex nonlinear FIR filter design problems by a SIP method

FIR filter design problems in the frequency domain are nonlinear (semi-infinite) optimization problems. In practice these almost always have been solved in a simplified form and/or only under restricting assumptions. In this paper, the four main design approximation problems in the frequency domain are stated in general forms, which allow the inclusion of constraints and the choice of an arbitrary L"p - resp. l"p-norm, 1lep#<=##infinity#, for the approximation. The careful mathematical formulation of these problems enables the derivation of several theoretical results (given in another paper), and it empowers the application of optimization procedures to their direct solution. Then, for the actual solution of these problems, a novel method for nonlinear semi-infinite programming is introduced and applied to several specific design problems. For some examples, the computed solution of the nonlinear problem is compared with a solution obtained form a convex approximation of the problem. (orig.)SIGLEAvailable from TIB Hannover: RR 7760(1999,4) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Prozessoptimierung in der Verpackungsindustrie der Energiewirtschaft

The production of brown coal briquette bundles in a completely automated production plant imposes strict quality requirements on the pressing of the briquettes. Thus, the packaging of bundles which consist of several layers of briquettes requires that each layer has approximately the same length. As the pressing of briquettes with exactly predefined measurements cannot be mastered technically, a part of the production that does not meet the minimum requirements must be picked out with a suitable quality surveillance procedure. The quality surveillance procedure used in production can be described mathematically and is subject to an in-depth analysis. It can be verified that, besides the search for the optimal choice of single parameters, it is essential for this particular application that the performance of a quality surveillance procedure does not depend on the dynamic behavior of the factors of production. The result is based on mathematical modeling, optimization, and simulation by a computer-based model and led to a considerable increase in production output. (orig.)SIGLEAvailable from TIB Hannover: RR 7760(1999,8) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Piecewise continuous controls in Dieudonne-Rashevsky type problems

SIGLEAvailable from TIB Hannover: RR 7760(2002,5) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Minimizing sequences in class-qualified deposit problems

SIGLEAvailable from TIB Hannover: RR 7760(2001,7) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Process optimization in the packaging industry of the energy industry: optimization of weight limits

The production of brown coal briquette bundles in a completely automated production plant imposes strict quality requirements on the pressing of the briquettes. Thus the packaging of bundles which consist of several layers of briquettes requires that each layer has approximately the same length. As the pressing of briquettes with exactly predefined measurements can't be meastered technically, a part of the production must be picked out with a suitable quality surveillance procedure. The quality surveillance procedure that was used in production could mathematically be described exactly and was subject to an in depth analysis. It could be verified that besides the question for the optimal choice of single parameters, for that very special practical application it is essential that the performance of a quality surveillance procedure does not depend on the dynamic behaviour of the factors of production. The output of the factory could be increased considerably by eliminating these problems and optimizing the production plant. Besides the mathematical modeling this result was based on the optimization and simulation by a computer-based model. (orig.)Available from TIB Hannover: RR 7760(1998,10) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman