The Indexing Polishing Filter (IPF) can be applied as pretreatment or post-treatment in a system to remove particulates. The IPF can use multiple grades of filter paper achieve best results.

Dewatering and Polishing. The IPF solids unit utilizes inexpensive fabric media to filter out solids. Filter fabric, which is supplied in 5, 20, and 50 micron sizes, is automatically indexed onto a recessed conveyor belt constructed of a high tensile, non-corrosive material. As water and solid particles drain through the filter fabric, solids are retained. As the water level rises, a float will actuate a drive motor and the conveyer belt will index the spent paper and new paper replace it. The IPF can be applied for pre-treatment, post treatment, or as a stand alone treatment system.