PP or CPVC fabricated filter structure media is considered as an integral part of waste water treatment process. This filtering component is also used for submerged aerated filtering system, trickling filters and biologically activated fixed film filter. Offered filter structure media is composed of a fixed bed containing coke, bed of rocks, slag, gravel, PP media and PU foam. Wastewater flows over this fixed bed and forms a film of microbial slime on it. This filter accessory is offered in specific thickness range, length and width based specifications. This structure media promotes smooth drainage of excessive biomass and improves air penetration rate through filter media.