A nice pithy presentation but a little short of verification - AS has often replaced trickling filters as it has a SMALLER FOOTPRINT. Also there is no mention of ambient temperature - trickling filters do not work anywhere near as well as AS in hot climates.
Published by Peter Styles, Independent - Consultant (retired)
A nice pithy presentation but a little short of verification - AS has often replaced trickling filters as it has a SMALLER FOOTPRINT. Also there is no mention of ambient temperature - trickling filters do not work anywhere near as well as AS in hot climates.