BELT PRESS TYPE DEHYDRATOR

摘要

PURPOSE:To decrease remarkably the water content of dehydrated cake in a belt press type dehydrator consisting of a primary flocculation part, primary gravity dehydration part and compression dehydration part by providing a secondary flocculation part and secondary gravity dehydration part between the primary gravity dehydration part and the compression dehydration part. CONSTITUTION:The belt press type dehydrator is constituted of the primary flocculation part in which a flocculating agent is usually added into the unflocculated sludge, the primary gravity dehydration part in which the water in the primarily flocculated sludge is dehydrated by the own weight and the compression dehydration part in which the sludge after the primary gravity dehydration is pressed by the belts. The secondary flocculation part 4 in which the flocculating agent is again added to the sludge after the primary gravity dehydration and the secondary gravity dehydration part 6 in which the moisture in the secondarily flocculated sludge is again dehydrated by the own weight are provided between the primary gravity dehydration part 6 and the compression dehydration part consisting of an upper filter cloth belt 7 and a lower filter cloth belt 8.