E Ecodisk™ Ecodisk™ - The Ecological solution for domestic wastewater treatment plants, from 100 to 10,000 Population Equivalent. Aerobic Wastewater Treatment W Whittier™ CoStrip Degasifier Veolia’s Co-Strip™ Degasifier offers an efficient alternative to vacuum degasification by using enhanced flotation technology with natural gas or nitrogen to strip dissolved gasses such as volatile organic compounds (VOCs) from produced water. Air Stripping