公开(公告)号：US4840736A

公开(公告)日：1989-06-20

申请号：US534681

申请日：1983-09-22

申请人： Bruno Sander ,  Herbert Lauer ,  Manfred Neuwirth

发明人： Bruno Sander ,  Herbert Lauer ,  Manfred Neuwirth

IPC分类号： B01D37/00 ,  B01D37/03 ,  C02F1/54 ,  C02F11/12

CPC分类号： C02F11/122 ,  B01D37/00 ,  B01D37/03 ,  C02F1/54

摘要： A process for dewatering sewage sludges of which the sludge solids contain less than 70% of organic matter, and whose dewatering characteristics have been improved by adding organic flocculants, on a filter press, wherein the sewage sludges are concentrated by adding an organic flocculant during thickening by gravity sedimentation from 0.5-5.0% by weight of sludge solids to 6-14, and especially 8-12, % by weight of sludge solids, the sewage sludges are mixed with additives, such as finely divided coal or ash or mixtures thereof, in an amount of from 0.5 to 1.5 parts by weight per part by weight of sludge solids, and the sludges are treated, before, during or after admixture of the additives, with a further 2-8 kg or organic flocculant/tonne of sludge solids and are then dewatered on the filter press.

摘要翻译： 在压滤机上通过添加有机絮凝剂使污泥固体含有少于70％的有机物并且其脱水特性得到改善的污水污泥的脱水方法，其中通过在增稠期间加入有机絮凝剂来浓缩污水淤渣 通过重力沉降从0.5-5.0重量％的污泥固体到6-14，特别是8-12重量％的污泥固体，污泥与添加剂混合，例如细碎的煤或灰或其混合物， 其量为每重量份污泥固体为0.5至1.5重量份，并且在添加剂混合之前，期间或之后将污泥与另外的2-8kg或有机絮凝剂/吨污泥固体进行处理 然后在压滤机上脱水。