21st September 2006 at 12:42 pm #653
Hello
I’m not sure I am much use to you there, since treatment of wastewater using biosand filtration is not an area I have any experience in. My gut feeling is that what you probably need is something more akin to rapid sand filtration, where there is some removal but not as complete as slow sand filtration. I can try and find out some references for you – I\’m sure there is a heap already researched on this.
Eric Fewster