This process minimizes maintenance without the use of chemicals. The process sterilizes the waste water to prevent odour, growth of bacteria and viruses. The flocculation concentrates the effluent water from <0.1% to 5-8% dry matter. [/av_image_spot] [av_image_spot tooltip_pos='av-tt-pos-right av-tt-align-centered' tooltip_width='av-tt-xlarge-width' tooltip_style='main_color' link='' link_target='' hotspot_color='' custom_bg='' custom_font='' custom_pulse='' hotspot_pos='42.7,30.6' av_uid='av-1orro6p']
The decanter removes more of the water bringing the sludge up to between 25% and 40% dry matter
Drying and cooling
The drying is efficiently achieved by friction which heats the now pretreated sludge to between 100-105°C causing rapid evaporation of the remaining moisture. Following this drying process, the sludge is now approx. 95% dry matter and sterilized. Finally the dry sludge is run through a cooling screw conveyor to ensure that the material is stable for storage.
The steam created by the drying process is cleaned in the scrubber to remove any particles and eliminate any possible odour issues