Polypropylene media  is ideally suited for either replacing rock in existing trickling filters to improve treatment plant performance or for installation in new trickling filters.

Media Characteristics: 

• 30 ft2/ft3 surface area
• 95% void ratio
• Manufactured of UV stabilized polypropylene
• Low installation cost
• Excellent for BOD reduction or nitrification
• Low minimum wetting rate,150 gpd/ft2
• For bed depths up to 30 ft.

Media is successfully operating in over 100 trickling filters. With over 300 mixing and redistribution points for both air and water per cubic foot of media, It is capable of redistributing wastewater every 2” of media depth. This feature makes Bio-Pac ideal for shallow trickling filters It  has also been used extensively in upflow anaerobic andaerobic submerged bed reactors .Since the media floats, use of an under drain support is eliminated. Further more, A unique shape serves as a foam breaker when installed in anaerobic reactors. Industrial installations include food processing, beverage, pulp and paper, chemical and pharmaceutical plants.