Bjoern de Haan, BACKHUS North America

SECOND TRIALJune 1st to July 28, 2010We used the material of our first trial and mixed it 1:1 with fresh sludge and built two new windrows withfollowing plan:Windrow 1: Adding one big amount of fresh sludge once per weekWindrow 2: Adding smaller amounts of fresh sludge three times per weekAdding amounts:Windrow 1: roughly 30 % of original windrow volume once per weekWindrow 2: roughly 45 % of original windrow volume. Added on three days per weekTurning frequency:Both windrows three times per week at the same day.In oder to have a all-over control of temperature we used a diagnostic device which logged thetemperature every 20 minutes