Fann Individual Sewer

Buying guide for Fann individual sewage

When it's time to install or replace an individual sewage system, Fann is one of the market's most established and appreciated brands. With patented technology such as IN-DRÄN modules and low-profile sludge separators, the ground work is significantly easier, while the requirements from the municipality's environmental office are met by a good margin.

Advantages of sewage systems from Fann

• Surface-efficient infiltration: With Fann's modular system, significantly less infiltration area is needed compared to traditional gravel beds, which saves space on the site and reduces the need for extensive excavation materials.
• Low-profile sludge separators: The design of the tanks allows the excavation depth to be minimized, which greatly facilitates installation in difficult ground conditions such as rock or high groundwater levels.
• Flexible upgrade: The systems can be easily adapted or supplemented with phosphorus treatment, such as flocculation units or phosphorus traps, if the environmental requirements in your area are tightened.
• High operational reliability: Fann is based on proven biological treatment technology with minimal moving mechanics, which provides a long service life and low operating costs over time.

Important considerations for your choice

Before you order your system from Fann, there are some key factors to take into account:

• Condition and protection level: Always check with your municipality's environmental office which protection level (normal or high protection level for health and environmental protection) applies to your property. At a high protection level, supplementary phosphorus treatment is often required in addition to sludge separators and infiltration.
• Household size and load: Select the volume of the sludge separator and the dimension of the bed based on the number of people in the household. The standard dimensioning is usually based on a single-family house (up to 5 people / 1 PE).
• Ground conditions: The groundwater level and the permeability of the soil (percolation capacity) determine whether you should choose a traditional infiltration, a reinforced soil bed or a solution with pumping.
• Accessories and installation height: For deeper installation, extension pipes are needed so that inspection and emptying hatches reach ground level. Also consider the need for anchoring straps, alarms and ventilation kits when ordering.

Typical areas of application

Fann individual drains are mainly used in new construction or renovation of sewage systems for villas, holiday homes and smaller communities outside the municipal network. Thanks to the modular options, the systems work equally well for BDT water only as for mixed sewage with toilet connection.