SPX Cooling Technologies MXF 7400 Applications, Upgrading Existing Rock Trickling Filters, Plan

Applications

Upgrading Existing Rock

Trickling Filters

MARPAK MXF 4800 with its 60° cross fluted geometry and high surface and void ratio is ideal for upgrading the performance of existing rock trickling filters.

With a surface area and void ratio more than three times greater than rock, upgrading with MARPAK MXF 4800 can more than double the organic capacity and improve effluent quality of an existing trickling filter. A significant amount of nitrification can also be achieved, depending on the organic loading.

Unlike rock or random plastic media, MARPAK MXF 4800 provides continuous and uniform horizontal redistribution of air and water, with no short-circuiting. In addition, MARPAK MXF 4800 has no horizontal surfaces, thus minimizing the potential for excessive solids buildup and plugging.

MARPAK MXF 4800 modules can be placed directly on rows of supports (Fig. 7-1) Removal of the existing clay tile along with the rock media is recommended. Modifications to the existing trickling filter structure are generally not required.

Plan

MARPAK MXF 4800

Rock Media

Media

Depth

Section

Remove Existing Rock Media	MarPier Supports
	Alternate Support Material:
and Underdrain
	Clay Tile, Concrete Block, Precast Concrete Beams