EN-3
EN
1. Overview
The purifier meets the requirements of the State Council's de
-
cree (209/2011) on treatment of domestic wastewater outside
the sewer systems of the waterworks.
Wastewater from a WC or dry toilet in the property must be con-
ducted into a closed tank or treated otherwise in a due manner.
Rain- or stormwater or drainage water from foundations must
not be conducted into the filter. If installed in accordance with
the instructions, the treatment capacity of the filter is about 500
litres per day, which in practice meets the need of washing water
for 1–5 people. The treatment capacity of the filter material is
good for about 100 days, after which it needs to be replaced in
accordance with the maintenance instructions.
The operation of the filter is based on mechanical and biologi
-
cal filtration of wastewater. The dirt in the wastewater sticks to
the organic filter material in the filter. The micro-organisms living
on the surface of the filter material use the impurities as their
nutrition.
The Greywater Filter 70 comprises two purifier units, a.k.a. mod
-
ules. The incoming wastewater is divided into the modules by
means of the branch sleeve (part 7) located between the mod
-
ules. Both modules contain five filter boxes placed one on top
of the other. The wastewater is conducted into the uppermost
filter boxes. Inside the filter, the wastewater flows by gravitation
from one filter layer to the other through the openings in the end
of the box.
In Finland, building a wastewater system or chang-
ing it always requires a building or action permission
from the municipal building authority or a submission
of notification of action. The building permission is
applied by submitting a relevant plan.
2. Planning and selecting the
location
2.1 Technical specifications
• dimensions of one module: (width x height x depth) 600 x
700 x 1010 mm
•
two modules side by side: width about 135 cm
•
pipe connectors for Ø 75 mm sewer pipes
• height difference of inlet and outlet connectors (height of fall):
530 mm
•
capacity: about 500 litres a day
• weight without filter material: 2x about 38 kg
2.2 To be located above the ground
The Biolan Greywater Filter 70 shall be installed above the
ground. Place the filter in a location where water will not gather,
even when there is flooding. The filter can be installed out of
doors without a cover. The unit is thermally insulated, which
means it tolerates slight frost. If the filter is used in winter, it
must, however, be equipped with the Biolan Heating Cable,
which is available as an option, or the filter must be placed in
a space, where the temperature stays above zero at all times.
The space required for use and maintenance must be taken
into account when selecting the location. A free space, at least
one metre deep, must be provided in front of the unit for chang-
ing the filter material. A sufficient space must also be provided
at the sides and the rear of the unit to enable maintenance of
the outlet connector for the sewer and the adjustment of the air
valves in the rear wall. To ensure the supply of oxygen to the
micro-organisms, the air exchange valves must not be covered
or the air exchange must be arranged in some other way.
2.3 Location inside a residential
building
Biolan Greywater Filters are primarily intended for installation
out of doors. If you are planning to install the filter indoors or in
close proximity to a residential building (for example, under the
terrace), then some maintenance space with its own entrance
should be provided. This space must also be provided with a
floor well or an earthen floor for possible malfunctions.
The replacement air for the filter is taken from the end of the
discharge pipe and the outlet air is conducted as sewer ventila-
tion to the roof of the building. To avoid odour problems, the air
valves of the unit must be kept closed. The outlet air can also
be conducted through the upper air valve in the rear wall of the
filter into a separate outlet air channel. If the unit is installed in
-
doors, the outlet air channel shall be fitted with an aspirator that
maintains a slight negative pressure inside the filter.
Whenever the Greywater Filter is located in a warm
space in a residential building, or in close proximity
to a residential building, the correct installation must
always be verified with the expert in charge of plan
-
ning the HVAC system for the building.
