PUMPING OF ACTIVATED SLUDGE, DELLACH, AUSTRIA
For the service and inspection of the aeration system, the activated sludge basins are emptied every two years.
COMPANY CARRYING OUT THE WORKS
Abwasserverband oberes Drautal-Weissensee
Sonnek Engineering GmbH (Tsurumi partner)
Pumping of activated sludge in a community sewage treatment plant. Basin depth: 6m. For the service and inspection of the ventilation system, the activated sludge tanks are emptied every two years. The activated sludge has a dry substance content of 1.5 to 2%. During emptying of the basin, the circulation and mixing of the sludge is turned off, and the sludge forms a sediment on the bottom. Pumping time 2 days. In the floor of the basin there is a 100mm deep sump, meaning that when the basin is emptied the sludge remains lying on the bottom. It must be removed.
Use of a Tsurumi model KRS2-80 pump with an agitator. This pump was leased from the Tsurumi inventory for the purpose. The pump is submerged by only 100-200 mm, running in snore mode, and the sludge is manually transported to the pump with scrapers and pumped away. Pumping time 1 day. The bottom sludge has about 3-5% dry substance. The basin could not be emptied with the standard wastewater pump available, since its motor had no cooling and underwent thermal shutdown.VIEW THE PRODUCT