Table of Contents
Advertisement
Recirculating Filter
Description:
A recirculating filter is a system made up of recirculation tank with a pump, a
media filter pod (or pods), and a return line from the filter back to the recirculation
tank. After sewage passes through a septic tank, it enters the recirculation tank
w
here it is pumped to the filter pod(s). After flowing down through the filter, it is
collected and sent back to the recirculation tank where it mixes with untreated
effluent and is pumped back to the filter again. With each dose, a portion of the
e
ffluent passing through the filter is split off and sent to the drainfield (usually
through a disinfection unit first). Effluent usually averages 3-5 passes through the
filter.
Function:
The function of the recirculating filter is to clean the wastewater to a high level
before passing it on to the drainfield. The filter oxygenates the effluent and
creates a surface area for treatment. Microbes consume most pollution out of
water after multiple passes before it flows o
Maintenance:
• Recirculating Filters should be checked yearly by a certified O&M provider.
• Visually inspect the filter tank/container for damage, leaks, etc.
• Make sure floats swing freely and that cords are not tangled up.
• Check observation ports and surface of the filter for ponding water.
• Clear filter of large vegetation & ensure ports are accessible.
• Check surface of filter for soggy spots or breakouts.
• See Sections 1 & 2 for more information on protecting your tanks a
ONE TYPE OF RECIRCULATING FILTER:
CONTROL
PANEL
IN
n to the drainfield.
RECIRCULATING FILTER POD
LIQUID LEVEL VARIES
- 46 -
A
CCESS
RISER
CONTROL
FLOATS
PUMP
the
nd filter.
OUT
Advertisement
Table of Contents
