Municipal wastewater
The following is published data by a Spanish Water Utility on the treatment of wastewater for second use . The data shows the backwash profile from the gravity flow sand filter and then the AFM ® filter . The data confirms the stability and high performance of AFM ® in comparison to sand .
The sand filter was unstable and the large interval between the back-wash peeks confirms channelling of water through the sand bed .
The AFM ® filter was like clock-work , each run phase and every back-wash was the same . The data confirms the stability of AFM ® and the high quality of product water that may be achieved .
Data published Technologia del Agua , No 334 November 2011 , I . S . S . N . 211 / 8173
Dryden Aqua Ltd Butlerfield-Bonnyrigg ,
Edinburgh EH19 3JQ Scotland Page 31 of 44
July 2015