B4-CV-17-D gth Parallel key is not included in scope of sup Bevel-helical gear boxes B4

Flender/Flender Gear Units/Bevel-helical gear boxes B4

their adsorptive and catalytic activity. Appropriate test apparatuses were built for this purpose. Itwas demonstrated that zeolites can be manufacturedwhicharesuitable bothfortheadsorp- tion and the catalytic decomposition of organic halocompounds. Even dibenzodioxins and furans could be successfull destroyed, so that the stipulated limit value of 0.1 ng/m3 could be maintained without difficuxy. 1 Thus, the aim of the project presented here was achieved very successfully. Zeolites meeting the requirements of the project were able to be manufactured, modified and formed. These systems were tested successfully both in the laboratory and under real conditions. Thus, zeolite-based materials which are very well suited to the purification of exhaust air and gas flows are available. Duration: 0 1 8 - 3 0 8 0 VQ8 Subject: Investigations into the biological purification of hardly water-soluble pollutants in exhaust air with the help of novel membrane reactor and complementary system study for assessment of organic emissions Research centre: lnstitut fur Siedlungswasserbau, Wassergute- und Abfallwirtschaft der Universitat Stuttgart Bandtale 1,7 Stuttgart Government sponsorship: DM 5,9 0 Sponsorship ratio: 1 Yo 1. Purpose of the project The hitherto known processes for biological purification of exhaust air, ;.. bioscrubbers and biofilters, cannot, or only to very limited extent, be used for the removal of highly volatile and/or hardly water-soluble substances. Many of these substances are certainly biodegrad- able. Due to the unfavourable physical characteristics, only very small concentrations can be achieved in the cleaning fluid of the bioscrubber or in the filter material of the biofilter. There- fore, the degradation rate of the known biological processes is very low. In the membrane process,. chemically inert membrane is initially used to bind these substan- ces by sorption. At the same time, this membrane acts as breeding ground for mic