I can suggest a very simple ...
Published by LOKESH PUNJ, A B.TECH. Agr Engg, PGDM-SPA IIMA (1977-9) 25 yrs in Water Piping / Irrigation/Infra Projects
I can suggest a very simple and low cost intervention using PP Nonwoven fabric which will retain solids even before they visit sedimentation tanks.May please send me Line diagram of the existing process with some description at lok.punj@gmail.com.