When a lagoon is being repurposed or closed down then it is necessary to totally remove all the bio solids.

This is done in three steps.  

FIRST the lagoon is pumped using traditional methods to remove as much of the solids as possible.  This brings the slurry level to roughly 12 to 18 inches.

SECOND an excavator makes a small sump hole in the bottom of the lagoon.  This sump hole is roughly 6 feet square by 3 feet deep.  Then the force feeder pump is lowered into the sump hole to pump all slurry pushed into it.

THIRD a skid steer with a rubber blade squeege is driven into the lagoon and the remaining solids and liquids are squeeged into the sump hole where the forece feeder pumps the slurry to adjacent farm fields or into tanker trucks.

The following video the customer was repurposing the lagoon to install a methane capture cover.  The mthane would be captured, scrubbed and put back into the nautural gas lines to be used by gas customers.