A. INSTALLATION GUIDE 4. INSTALLATION OF THE TANKS
PAGE
16 / 52
Installation and User guide – ECOROCK-5000 & BIOROCK Multirock Systems – 10-10-2017
Installation of a Pump Well
If the effluent can’t be discharged by gravity, a pump well should be installed for above-ground
discharge. The pump is required to lift the effluent (treated water) to a higher level.
BIOROCK has developed an optional PE pump well with a diameter of 400 mm. The PE pump well
has the same height as the ECOROCK-5000 unit. All the connections are matching with the
openings at the ECOROCK units.
At the end of the ECOROCK-5000 the treated water (effluent) is collected in the pump shaft and
can be easily pumped to a higher level with a normal submersible pump.
The seals on the BIOROCK tanks are flexible and have a diameter of 110 mm
The discharge pipe for the treated effluent should have a minimum gradient of 1%
4.1.3 Installation of the ECOROCK treatment unit(s)
The ECOROCK-5000 unit(s) must be installed downstream of the Primary Tank
The effluent from the Primary Tank should flow by gravity to the Treatment Units
The gradient of the treated effluent pipe to the BIOROCK units should be a minimum of 1%
4.2 INSTALLATION IN DRY GROUND CONDITIONS
See Appendix «Installation in dry ground conditions»
Conditions for installation:
-
Dry and stable ground conditions
-
Absence of water at the bottom of the excavation
4.2.1 Installation and digging in dry ground conditions
The maximum level of top soil above the backfill is 200 mm
The units must stand on a clean and stable base such as concrete
In dry ground conditions pea gravel can be used
Mud and other soft materials must be removed from the bottom of the excavation prior to
Installation.
A stable base must be created at the bottom of the excavation
The base of the excavation should be level and compacted
There must be a distance of at least 300 mm between the walls of the excavation and the
Units. Same distance applies between the tanks in case of Multirock installations.
4.2.2 Installation of the tanks in dry ground conditions
Once the base of the excavation is stable, the installation can begin
The Primary Tank should not be positioned horizontally; it must have a slight gradient
towards the water outlet
Before connecting any water or ventilation pipes, ensure that the units are perfectly
Installed.
