S. Kunst

TL;DR: In batch tests with the biofilm covered carriers, it was possible for the first time to examine the nitrogen conversion at the intact biofilm and to establish the deammonification processes in a continuous flow moving-bed pilot plant.

TL;DR: In this paper, the influence of low ( 5 -sludge loading rates on the growth and morphology of Microthrix parvicella and the settlement of activated sludge was investigated.

TL;DR: Results indicate that under low DO concentrations autotrophic ammonia-oxidizers might be the causative agents of the observed nitrogen loss by performing aerobic/anoxic denitrification with nitrite as electron acceptor and ammonia (or perhaps hydroxylamin) as electron donor.

TL;DR: Focusing on the questions of identification and the description of conversion and transport processes (water/gas), a full-scale treatment plant under clogged and non-clogged conditions was investigated in detail and results make it possible to describe some of the processes and their interactions in the filter body.

TL;DR: In this article, the extent of degradation and conversion are especially determined by O 2 -supply which can be influenced by operating method, hydraulic loading and soil material, and the determination of N-conversion activities of different soil samples has shown that nitrification activity as well as nitrate reductase activity have their maximum in soil depths down to 10 cm.