Example of an Ashco RFSII Commercial Layout.
How
the system works:
Wastewater
flows by gravity to a septic tank. In the septic tank, which is situated as
close as possible to the source, the heavy solids known as sludge settle to the
bottom of the tank and largely decompose into liquids and gases; the lighter
material known as scum floats to the top of the liquid contents and meets a
similar fate.
Relatively clear effluent from the mid-level of the septic tank flows
through an effluent filter and, by gravity, into a Recirculation tank. Pumps in
the Recirculation tank pump effluent onto a sand filter. Pumps operate
intermittently and sequentially 24 hours per day, seven days per week.
Every
time the sand filter is dosed by the pumps in the Recirculation tank, the
effluent trickles through the media where it is treated by naturally-occurring
micro-organisms populating the filter. After passing through the filter media,
the treated effluent is collected in a 4-inch diameter pipe at the bottom of the
filter through which it is conveyed to a Recirculation valve which automatically
returns effluent back to the Recirculation tank and a portion to the
Disinfection unit.
Key Benefits
