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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: narrative-text, biological-methods, biotechnology, denitrification, wastewater-treatment, waste-water
Page: 1. Upstream precipitation (REBEL WP8: Biotechnology)
Pdeficit should be avoid in the activation basin (otherwise e.g. bulking sludge rebwp8:Bulking sludge can occur). \\ \\ !UBT484PVorfällung.jpg border=1
Other labels: phosphor, chemical-methods, biotechnology, sewage-treatment-plants, precipitation, wastewater-treatment, waste-water
Page: 1 Long sand trap (REBEL WP8: Biotechnology)
Long sand traps are constructed as elongated, open channels in two parts in small plants (in three or more parts in larger plants). Baffle plates at the sand trap outflow are used to maintain the desired flow speed when inflow varies. The sand ...
Other labels: sand-trap, narrative-text, biotechnology, sewage-treatment-plants, wastewater-treatment, waste-water
Page: 1 Mechanical purification (REBEL WP8: Biotechnology)
mechanical component of waste water purification is used to remove solids and already starts in the sewer network rebwp8:1 Sewerage . In the plant itself, screens rebwp8:1 Screens and sieves rebwp8:2 Sieves first separate out coarse dirt ...
Other labels: narrative-text, biotechnology, sludge, wastewater-treatment, sewer-systems
Page: 1 P incorporation in biomass (REBEL WP8: Biotechnology)
P compounds are vitally important for bacteria rebwp8:Bacteria to build their physical body (empirical value BOD5 rebwp8:BOD5 : N : P = 100 : 5 : 1). As the phosphate content in domestic waste water is however higher, only approx. 3040 ...
Other labels: biomass, narrative-text, phosphor, biotechnology, bacteria, wastewater-treatment, waste-water
Page: 1 Rectangular basins (REBEL WP8: Biotechnology)
waste water flows slowly (0.25 cm/s) and uniformly through the basin, sediment­able material separates out, float­ing material is retained by a baffle in front of the basin out­flow. The sedimented slud­ge is conveyed into the slud­ge sump ...
Other labels: sedimentation-basin, narrative-text, biotechnology, sewage-treatment-plants, sludge, wastewater-treatment, 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: narrative-text, biological-methods, biotechnology, denitrification, wastewater-treatment, waste-water
Page: 2. Simultaneous precipitation (REBEL WP8: Biotechnology)
Chemicals are directly added tot he activation basin (or tot he return sludge) simultaneously with the biological degradation P rebwp8:3 Biological P removal is removed (up to > 85%). \\ \\ !UBT485PSimultane Fällung.jpg border=1
Other labels: phosphor, chemical-methods, simultaneous-precipitation, biotechnology, sewage-treatment-plants, wastewater-treatment, waste-water
Page: 2 Chemical P removal (REBEL WP8: Biotechnology)
P is precipitated out as phosphate by adding Fe or Al salts. Disadvantages here are the costs for the precipitant and the salting of the water (more Cl, SO4\ in the outflow). Acidic precipitation salts (such as FeCl{}3) result in consumption of hardness and therefore reduced buffer capacity ...
Other labels: narrative-text, phosphor, chemical-methods, biotechnology, precipitation, wastewater-treatment, waste-water
Page: 2 Round basins (REBEL WP8: Biotechnology)
case the waste water is guided to the centre of the basin and flows outwards uniformly in all directions to the basin edge. Outflow channels run around the outer part of the basin. A moving scraper bridge pushes the sludge towards a sludge sump in the centre of the basin ...
Other labels: sedimentation-basin, narrative-text, biotechnology, sewage-treatment-plants, sludge, wastewater-treatment, waste-water