The nitrogen removal process for OMNI RSFs:

Nitrification

Nitrification is the biological conversion of ammonia-nitrogen to nitrate-nitrogen. This is accomplished by members of a group of bacteria called nitrosomonas.

The beginning of the nitrification process begins when the wastewater flows from the Septic Tank into the Recirculation Tank where it is aerated, then pumped up to the top of the Filter Modules and undergoes the first phase in the nitrogen removal process, called Nitrification.

At this point the effluent percolates down through the Filter Modules where a portion of the flow is sent back to both the Recirculation and Septic Tanks. The portion (effluent flow) that is released back into the Recirculation Tank is further split, allowing a percentage to be discharged out into the leaching field for further biological treatment and final disposal, while the remainder is re-charged back into the Recirculation tank for further treatment.

Denitrification

By providing an aerobic/anoxic condition within the Septic Tank and portions of the Recirculation Tank, the effluent undergoes the second phase of the nitrogen removal process called Denitrification. Denitrification is a process where the nitrate-nitrogen is converted to nitrogen gas, which can then be liberated into the atmosphere. This reaction is the mechanism for removal of nitrogen from wastewater.