Label: biological-methods

All content with label biological-methods.
Related Labels: table, sk, phosphor, bod, anaerobic, degradation, sewage-treatment-plants, bacteria, figure, scum, composition, carbon-cycle, bulking-sludge, organic-substances, foam, denitrification, concentration, biological-process, aerobic, more »

Page: 1. Simultaneous aerobic sludge stabilisation (REBEL WP8: Biotechnology)
activation plants with simultaneous sludge stabilisation the activation basin rebwp8:Activated sludge method is also the sludge stabilisation reactor. They operate without a primary sedimentation basin as otherwise primary sludge would be produced which have to be stabilised again separately ...
Other labels: narrative-text, stabilization, biotechnology, sludge, wastewater-treatment, waste-water
Page: 1. Sludge concentration (REBEL WP8: Biotechnology)
preliminary concentration stage acts to minimise the energy demand for heating the water with ATS or mesophilic digestion. A subsequent concentration stage can follow a stabilisation stage
Other labels: concentration, narrative-text, biotechnology, sludge, wastewater-treatment, waste-water
Page: 1. Upstream denitrification (REBEL WP8: Biotechnology)
Waste water, return sludge and internal recirculation are mixed in the denitrification basin. Both denitrification and nitrification rebwp8:2 Nitrification basins can be configured as cascades. To increase operating flexibility, it can be possible for the last parts of the denitrification basin (in the direction of flow ...
Other labels: figure, narrative-text, biotechnology, denitrification, wastewater-treatment, waste-water
Page: 1 Ammonification (N mineralisation) (REBEL WP8: Biotechnology)
N is generally separated from organic N compounds in the form of NH{}3, certain microorganisms can also separate NH{}4{} from the amino acids contained in proteins (deamination) or release it by urea hydrolysis. H{}2{}NC(O ...
Other labels: narrative-text, biotechnology, nitrogen, ammonification, wastewater-treatment, sewer-systems, waste-water
Page: 2. Cascade denitrification (REBEL WP8: Biotechnology)
Waste water flows through two or more activation basins (each with an upstream or simultaneous denitr. stage) conse­cutively, with the waste water being fed in a divided manner to the denitr. basin (à internal recirculation omitted). High O ...
Other labels: figure, narrative-text, biotechnology, denitrification, wastewater-treatment, waste-water
Page: 2. Separate aerobic sludge stabilisation (REBEL WP8: Biotechnology)
age of the sludge is not sufficient for stabilisation, drawn off excess sludge can be aerated in a separate basin (0.5 mg/l O{}2) until it is nonputrefiable. Total stabilisation time = sludge age in activation stage residence time in stabilisation basin ...
Other labels: narrative-text, stabilization, biotechnology, sludge, wastewater-treatment, waste-water
Page: 2 Biological purification (REBEL WP8: Biotechnology)
early as the 19th century, waste water specialists learned about natural selfpurification processes from nature. In biological purification, dissolved and fine suspended material, as well as colloids (which do not sediment out by themselves), are converted into sedimentable material rebwp8 ...
Other labels: narrative-text, biotechnology, sewage-treatment-plants, bacteria, sedimentation, wastewater-treatment, waste-water
Page: 2 Nitrification (REBEL WP8: Biotechnology)
During nitrification, oxidation of the ammonium into nitrate takes place by various autotrophic microorganisms (nitrifiers) and is carried out in the activation basin. The nitrifying bacteria use CO{}2 for building cells and reduced organic N compounds as an energy source. The maximally ...
Other labels: table, narrative-text, biotechnology, nitrogen, sewage-treatment-plants, nitrification, bacteria, wastewater-treatment
Page: 3. Aerobic-thermophilic sludge stabilisation (REBEL WP8: Biotechnology)
method is suitable for when decontamination is the objective. Good preliminary concentration is particularly important. Sludge which is produced is aerated in a closed tank (air or O{}2). When let out the sludge is conducted via a heat exchanger which preheats the freshly ...
Other labels: figure, narrative-text, stabilization, biotechnology, decontamination, sludge, wastewater-treatment, waste-water
Page: 3. Simultaneous denitrification (REBEL WP8: Biotechnology)
type of upstream denitrification with a high internal return ratio can be realised in the circulation basin with nitr. and denitr. zones. 8090 % N can be removed like this. \\ \\ !UBT477Simultane Deni.jpg border=1
Other labels: figure, narrative-text, biotechnology, denitrification, wastewater-treatment, waste-water