公开(公告)号：US20010004974A1

公开(公告)日：2001-06-28

申请号：US09765336

申请日：2001-01-22

Applicant: Weda Poolcleaner AB.

Inventor： Anders Ekenback ,  Klas Lange

IPC: B01D024/46

CPC classification number: B01D36/045 ,  B01D24/205 ,  B01D24/4636 ,  B01D24/4678 ,  B01D24/4689 ,  B01D2201/265

Abstract: The invention relates to a method and an apparatus for cleaning the sand beds of slow sand filters, infiltration basins and pools of other types having sand beds in water treatment works and similar plants, while the filter is in service, by removing a few centimeters of the bed surface, cleaning the sand of the sludge or filter film formed on the bed surface, returning the cleaned sand to the bed, and discharging the separated sludge, suspended in water to drain or to a suitable disposal site. This is achieved using a tracked cleaning machine equipped with a submersible pump (7) and nozzle (8) to remove the top layer of sludge-bearing sand from the bed, cleaning the sludge from the sand thus removed in a hydrocyclone (13), returning the cleaned sand to the bed via a spreader plate (15) and discharging the water-suspended sludge to a drain or to a suitable disposal site through a hose (17).

Abstract translation: 本发明涉及一种在过滤器使用中清洗慢砂过滤器，渗透池和其他类型的沙床的沙床的方法和装置，其中在过滤器处于使用状态，通过去除几厘米的 在床面上清洗形成在床面上的污泥或过滤膜的沙子，将净化的砂子返回到床上，并将分离的污泥排出，悬浮在水中排出或排入合适的处置场所。 这是使用装有潜水泵（7）和喷嘴（8）的跟踪清洁机器来实现的，以从床上去除含污泥的砂的顶层，在水力旋流器（13）中清除由此去除的砂子上的污泥， 通过扩张板（15）将清洁的砂子返回到床中，并通过软管（17）将水悬浮的污泥排放到排水口或适当的处理场所。