Our sewage treatment system has a patented wastewater treatment process called VFL or Vertical Flow Labyrinth that utilises vertical channels and weirs to push the effluent through a series of chambers containing stabilised sludge which is then redistributed in several locations to maximise the cleaning within the septic tank system.
In the domestic wastewater treatment process there are many sub processes however the four main processes are such: Mechanical cleaning, anaerobic digestion, aerobic digestion and final settlement. These four major processes of the VFL biological wastewater treatment ensures that BioPro sewage treatment has the highest levels of cleaning in the country.
We are proud of the fact that we carry out a four process treatment, as typical wastewater treatment processes only carry out one or two of these to achieve weaker results, relying on eth ground to percolate or clean the effluent to the degree required for acceptance to ground waters.
The Wastewater Treatment Process – Technically Explained
VFL stands for Vertical Flow Labyrinth, which is a proprietary, patented technology used in the treatment of biological wastewater reactors and produces high quality, treated effluent suitable for reuse or discharge to the environment.
The treatment technology is based on a continually operating modified activated sludge process. The biological reactor comprises of a non-aerated chamber (anaerobic-anoxic), aerated chamber (oxic), final clarification chamber and an integrated retention chamber.
The chambers are connected by internal circulation and recirculation conduits between the compartment of the non-aerated chamber, between the non-aerated and final clarification chamber and between the aerated chamber and final clarification chamber.
The non-aerated chamber is divided by a series of over-flowed and under-flowed baffles into compartments creating the term “Vertical Flow Labyrinth” (VFL). The baffles form twelve compartments in the non- aerated chamber.
In the final clarification chamber, a flow control device is incorporated, which enables the usage of the volume of the integrated retention chamber in all the compartments and tanks of the wastewater treatment plant during peak flows protecting the overloading of the plant.
The aeration and the maintaining of the activated sludge in suspension within the aerated chamber is guaranteed by fine-bubble diffusers. Mixing, circulation and re-circulation of the activated sludge is provided by compressed air introduced by a blower via an air distribution system, it being possible to regulate the flow of compressed air.