FLOATING MEDIA BIO-REACTOR

The process involves two stages of treatment for complete breakdown of the organic wastes present in the wastewater so that it can be reused.

The first stage is an Anoxic Bioreactor where the wastewater flows through a packed plastic medium with out any air. This condition called anoxic, helps in breaking down the organic and ammonia nitrogen from the wastewater. This process by which nitrate nitrogen is converted biologically to nitrogen gas in the absence of oxygen, this process is also known as anaerobic denitrifiction. Denitrifiction prior to Attached Growth Activated Sludge Process reduces the nitrogen load and hence a balanced C:N:P ratio can be achieved for better removal of COD & BOD at the downstream. This also reduces the volume sludge generated in the downstream process.

The out let of the Anoxic Zone flows to an Attached Growth Activated Sludge Reactor and Mass Flow Systems (MFS) have an unique design called FMBR.

FMBR – Floating Media Bio-Reactor is an innovative technology used for the treatment of domestic sewage and other wastewaters.

The MFS FMBR uses the attached growth process for treatment and recycle of wastewater. In a single tank, exemplarily designed floating media are loaded for the attached growth process to take place. Oxygen transfer is done from the bottom of the tank through fine bubble membrane diffusers. Lamella Plate Settler integrated within the tank helps in better settling of the biomass generated and available internally for continuous bioreaction. The sludge settled at the bottom of the tank shall be removed separately to a sludge drying bed.
The overflow from the MFS FMBR can be stored in a clear water tank and from here it can be pumped for gardening.

The system gives the following advantages compared to the conventional activated sludge process.

• Higher Oxygen transfer efficiency - Reduction in power consumption, resulting in lower operating costs.
• Use of flexible tank configurations / geometry.
• Use of increased liquid depths, hence less space requirement.
• Gentle / Uniform aeration / mixing - avoids floc shear.
• Low overall initial investment costs.
• Can operate in surplus plant air / oxygen.
• Reduces foaming where it is a problem.

>> Process Flow Scheme