B. USER GUIDE 3. RECOMMENDATIONS FOR OPERATION AND MAINTENANCE
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Installation and User guide – ECOROCK-5000 & BIOROCK Multirock Systems – 10-10-2017
Effluent Filter replacement
The BIOROCK effluent filter should be replaced annually (Multirock: checked every quarter
and replaced before if required)
Open the cover at the PVC pipe that provides access to the Effluent Filter
Take the rod holding the Effluent Filter and lift it carefully to remove
Beware of flying particles
The Effluent Filter should be replaced when its condition is no longer fit for efficient filtering of suspended
solids.
Emptying of the Primary Tank
The first emptying of the Primary Tank takes place, when the sludge level reaches 50% of the
Primary Tank volume, unless superseded by local regulations.
Always use a certified septic tank emptier.
Replace the Effluent Filter at least every two years.
The frequency with which the tank is emptied may be adapted according to the nature of the operation and
how many people live in the building. It must be emptied when the sludge level reaches 50%.
The cleaning certificate, written by the certified septic tank cleaning company, must be retained by the
owner in and placed in the maintenance guide.
The septic tank emptier should pressure wash the sides of the tank and the Effluent Filter to remove the
accumulated fats and other matter.
The tanker, while emptying the Primary Tank, must not be parked any nearer than 4 meters (14’) from the
installation to ensure and maintain stability.
Refill the Primary Tank with clean water after emptying before resuming normal operation.
Further information:
The quantity of sludge produced is influenced by how the unit is used (size, frequent overloads, type of waste
water, routine maintenance). Each unit is different. This is particularly true for commercial applications.
We estimate that an installation of 5 PE will produce a maximum of +/- 900 liters of sludge in the first year.
The quantity of sludge produced will reduce over the first few years: normally after the fourth or fifth year,
the residual quantities will have decreased by 40%. When emptying, the cleaner must leave a few centimeters of
sludge at the bottom of the tank; the bacteria that break down the sludge are specific and take a long time to
develop.
ECOROCK-5000
Sludge production in Primary Tank
Capacity in Person Equivalent
1x
ECOROCK-5000
30 PE
2x
ECOROCK-5000
60 PE
3x
ECOROCK-5000
90 PE
Sludge production
5.475 Liters/year
10.950 Liters/year 16.425 Liters/year