Abstract: A wastewater treatment system is disclosed whereby trickling filters remove a high proportion of biochemical oxygen demand, total suspended solids, and nutrients from wastewater using, in one embodiment, a pressurized media container. The system accomplishes this in an improved way by combining venturies or blowers to aerate the wastewater, and recirculating the wastewater and air down through the treatment media, improving the overall efficiency of the system and reducing its size. A screen at the base of the pressurized media container supports the media and allows the wastewater to exit the pressurized media container. The system also includes a low pressure nozzle that aids in the proper distribution of the wastewater.

Abstract: A waste water treatment method and system including a recirculating treatment zone and a filter/treatment zone. The recirculating zone has a treatment medium that includes aerobic microbes and small beads that create interstices within, and extensive surface area on, which active microbes dwell and through which dead microbes and treated water are permitted to easily pass. The filter/treatment zone has a filter/treatment medium that includes peat and small beads that create interstices through which filtered water is permitted to pass. The recirculating treatment zone is designed to be coupled to a settling unit, such as a septic tank. The filter/treatment zone may be coupled to a leach field, with ultraviolet disinfection for coupling to a secondary water user, a soak hose system, etc.