[29 March/Farmers Weekly]

Ravensdown have reported  its new ClearTech dairy effluent treatment system will allow two-thirds of the water used daily to wash farm milking yards to be recycled. The system removes up to 99 percent of E coli and phosphorus from the raw effluent water while cutting nitrogen concentration by about 70 percent. ClearTech’s technology convinced judges at the South Island Agricultural Field Days to give the Agri Innovation Award to Ravensdown. The treated water can be reused in washing yards after a change in rules made by the Ministry for Primary Industries. The approval still does not apply to the milking parlour and equipment, which still require fresh water. The system costs nearly $90,000 to install.