Biotube Effluent Filters

Every septic tank needs an effluent filter to keep solid particles from spilling into the drainfield. Solids in the drainfield cause clogging and excessive biomat growth.

Effluent filters are not all alike. Orenco's Biotube effluent filters have 5-10 times more flow area than others, so they don’t need to be cleaned as often. This reduces maintenance time and cost. Cleaning is a simple matter of hosing off the filter whenever the tank is pumped.

FT-Series Residential Biotube effluent filters can be used in new or existing tanks, for both residential and commercial applications. Biotube filters are also part of our pump vaults and our EasyPak Pump Package. Our filters have a lifetime warranty.

How They Work

Effluent from the relatively clear zone of the septic tank, between the scum and sludge layers, enters the Biotube effluent filter through inlet holes in the housing. Larger particles are retained in the filter's interior space, where organic materials further decompose. Optional flow modulating orifices at the outlet of the filter slow the flow through the tank, allowing maximum settling of solids.

Each filter comes with a Biotube filter cartridge (in 4-, 8-, 12-, and 15-in. diameters), a PVC housing, and an extendable PVC handle for easy removal. A shortened version of our standard 8- and 12-in. diameter filters, called a "base inlet filter," is available for low-profile tanks. 

Options

An optional alarm is available to signal a high-level condition in the tank, which may indicate a need to clean the filter. An optional slide rail system, available on larger filters, simplifies installation and provides access for servicing. Slide rails are required when there is only one access to the tank.