filtering TN river/lake water

[scott]

how would I construct a filter to filter lake water from the Tennessee River using 6" pvc and filtering media?

[Andy CWS]

What is the intended use for the water? Irrigation? Utility water? Drinking water?

How many gallons per day usage?

Whenever using surface water, a very wide range of parameters must be understood. The condition of surface water can change daily, even hourly. Surface runoff, farming chemicals, industrial waste, organic matter--both living and dead, etc., must be determined though not only testing but constant monitoring.

Initial filters I call the "logs and frogs" filter (meant to keep out very large substances), which can include screens of a wide mesh size. From there coagulation, disinfection, filtration, sanitation, and purification must come in proper stages allowing for adequate flow and ease of maintenance.

In short, a lot more information would be needed to determine what to recommend.

Andy Christensen