General Specification and Installation Information
Media
MARPAK is a Modular PVC media specifically designed for fixed film biological treatment applications.
MARPAK is available in both the highly efficient 60° cross flow design (MXF Series) for complete secondary treatment and nitrification and the vertical flow design (MCR Series) for treating high strength industrial wastewater.
MARPAK media is available in specific surface areas from 30 to 74 square feet per cubic foot with a 95% void to volume ratio.
The MARPAK modules are manufactured in various PVC sheet thicknesses to meet specific structural requirements.
Material
MARPAK polyvinyl chloride (PVC) sheets are resistant to rot, fungi, bacteria growth and other forms of microorganisms and are chemically resistant to normal concentrations of sewage acids, alkalis, organic solvents and organic compounds.
The PVC compound is UV resistant and specifically formulated to resist
Installation
MARPAK is installed so that the sheets of all modules in a particular layer are parallel.
Special care should be taken during installation of the media to protect the modules from damage. Where necessary, cutting and trimming of the modules may be performed within the fixed film reactor. Adequate protection and precaution should be taken to insure that no damage is done to the placed media and that no debris from the cutting process is allowed to lodge in the placed media.
Warranty
The media supplier shall certify to the general contractor and the engineer in writing that the media to be supplied will meet or exceed the specifications. Limited warranty shall be provided by the manufacturer for a period of one year after installation against defects in material and workmanship.
For a more detailed specification for your specific application, please contact
SPX Cooling Technologies at 800 462 7539 and ask for MARPAK.
