I use the green technology of ...

I use the green technology of Sludge Treatment Wetlands. It is based on plants, with minimum mechanical equipment, without the use of chemicals and with no need for specialized staff. The main advantages are the very low operation costs (up to 90% reduced compared to mechanical methods) dur to the minimum energy consumption. There is no need for daily/weekly transport of sludge. Sludge is accumulated and dewatered-stabilized in the reed bed for 6-8 years. After that time, residual sludge layer is well stabilzied and is removed to be used as fertilizer, for example, since it is a valuable biosolid material. So, I think that these systems are ideal to reduced your total costs and also apply an environmentally friendly technology.