Wastewater treatment plants and processes for treating wastewater are described. The wastewater treatment plant utilizes channel plug flow dynamics with attached growth media and pure oxygen or mixtures of pure oxygen and compressed air.

A method and apparatus for collection and disposal or utilization as a carbon neutral fuel of fats, oil and grease that includes a first porous container, a second porous container, and a grease trap having an inlet and an outlet. The first porous container is positioned proximate the grease trap inlet and the second porous container is positioned proximate the grease trap outlet. The first and second porous containers are formed of a porous fabric and contain an absorbent, organic hydrocarbon material capable of absorbing a quantity of fats, oil and grease. The second porous container may be positioned on either side of the grease trap outlet (within the grease trap or intermediate the outlet and an exit pipe) and may be held in a stationary manner via a tether and/or a hinged door having a flange for capturing and holding the porous container in a stationary manner.