centrifugal decanter / horizontal / for sludge dewatering
OSE Flottweg SE



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    for sludge dewatering


The Flottweg OSE Decanter. Optimal Sludge Dewatering of Primary and Excess SludgeThe decomposition process in a sewage treatment facility continually generates biological sludge. To ensure a stable decomposition process in the biological cleaning stage, this biological sludge must be removed. The removed biological sludge is called surplus activated sludge in further process steps, and it is subsequently transported into a digester. To make optimum use of the digestion space in the digester, the surplus sludge must be thickened from its initial 0.5 to 1 percent total dry solids (5-10 grams per liter) to 6 to 8 percent dry solids, depending on the pump capacity. Flottweg OSE Decanters also permit the constant, smooth feeding of the digester, using solid regulation in the thickened sludge. A set point of 7 percent, for example, can be maintained constant to ± 0.1 percent.