Premier Tech Aqua
3/20
Ecoflo
®
Polyethylene
–
Installation Guide Ontario
Edition: 2020-06-23
2.2 Dosing tank and control unit (Time dosed biofilter only)
A dosing tank of sufficient volume must be installed downstream from the primary reactor to feed the Ecoflo
Biofilter. The dosing
tank’s
pump is connected to the PTA DCU-100 simplex control panel or the equivalent to
feed the Ecoflo
®
Biofilter 20 hours per 24-hour period. Premier Tech Aqua recommends feeding each Ecoflo
®
Biofilter between 30 and 40 litres (8 and 10 US gallons) per hydraulic event.
2.3 Ecoflo
®
Biofilter
Once the primary treatment is complete, the wastewater flows from
the primary reactor to the Ecoflo
®
Biofilter, where it flows into a
tipping bucket that equally distributes it along the distributor plates
installed on either side of a central support. The wastewater then
trickles through a filtering media composed of natural fibers. The
organic matter contained in the wastewater is then consumed by
the microbial flora fixed onto the particles that compose the filtering
media.
Finally, the treated effluent is discharged into the environment,
either by infiltration in an absorption bed located directly under the
Ecoflo
®
Biofilter or release into a watercourse, provided certain
conditions are met and in accordance with local regulations.
To ensure effective treatment, there must be enough oxygen present in the system to feed the microorganisms in
the filtering media. Air enters the system through vents located on the main access cover. Depending on the
biofilter model used by the treatment system, the pumping station and/or central support allows air to circulate
between the surface and base of the filtering media. Air circulates throughout the system by way of convection
from the residence’s vent (or a standalone vent) through a feed pipe to the primary reactor
.
An Ecoflo
®
Biofilter’s
operating principle allows the system to be used continuously or intermittently without
requiring any special precautions or having any impact on the quality of the treatment. In most cases, no specific
action from the owner is required to start the system.
The Ecoflo
®
Biofilter model and number of units required are determined based on the number of bedrooms in the
residence or the total daily volume of domestic wastewater generated by any other type of building. It is also
determined in accordance with the surface area and existing topography and soil characteristics (nature,
permeability, depth).
There are many different Ecoflo
®
system models, and each model has different characteristics: type of shell used,
treatment capacity based on the number of bedrooms and presence or not of a recovery pump built into the shell.
Ecoflo Biofilter
Shell (type of)
Polyethylene
Treatment capacity
5.7 = 1,755 L/d Demand dosed or 2,195 L/d Time dosed
7.3 = 2,250 L/d Demand dosed or 2,810 L/d Time dosed
Bottom (type of)
Watertight
Discharge (type of)
Gravity or pumped
Air flow diagram
(polyethylene shell)
