posted 10 years ago
You say you treat the waste water on site, can I ask if you could post more details on that? I'm currently in the process of doing the same. Though it won't filter waste water, it will just bring the local water quallity up and provide airation. In holland this is called a helofyte-filter. A helofyte being a waterloving plant like a reed or a rush. Basically what we'll do is run the water through a sand filter in an IBC, then a shell bed and then two beds of rushes. The sand will obviously take care of turbidity, the shell will lower the PH so that heavy metals fall out. The rushes then readjust the PH to 7/7.5, extract the leftover heavy metals, a lot of nitrogen and breath out some of the last things like waterbound hormones, hydrocarbons and 'x-icides' which will/should break down easily under UV exposure. Then lastly the water flows through a bed of sweetwater mussels which will fix the phosphate into the mud.
How's your system set up?