Cleaning of sewers using flush cleaning- part 2: Tools for flush cleaning

摘要

The Hydrass Valve flushing gate and the Biogest System are self-controlled tools for the flush cleaning of drains and retention tanks. They are characterised by their good clean- ing performance, they are economic, ecology and user friendly. The disadvantages of former flush cleaning tools are avoided. Thus the method of flush cleaning is an alter- native to high pressure jetting.