ROWANWOOD IP INC.
|ROWANWOOD IP INC. Patent applications|
|Patent application number||Title||Published|
|20140212219||ROLL-FORMED CONDUIT-ARCH FOR LEACH FIELD - In an apparatus for disposing of wastewater in subsurface soil, corrosion-resistant wire-mesh is formed by profile-rolling into a conduit-arch skeletal framework with open floor and is covered with non-woven geofabric. This conduit, set in excavated trenches to form a leach field and is buried with permeable soil cover, allows dispersal of wastewater throughout the trenches without distribution pipe or crushed stone, and allows substantial evaporation from the trenches and substantial air infiltration into the trenches to encourage aerobic degradation of organics and ammonium. The wire-mesh is derived from easily available coils sold for wire-mesh fencing.||07-31-2014|
|20140166559||THREE-DIMENSIONAL FILAMENT MATRIX AS BIOLOGICAL FILTRATION MEDIUM - A microbial attachment means with consistent physical properties and non-degradable material suitable for submerged or free-draining filtration of wastewater is provided in the present invention. The material is used in the construction and landscaping industries and is readily available and cost-effective. It consists of a web or mesh of loosely overlapping polymeric filaments forming sheets with small three-dimensional topographic undulations or “hill and valley”, corrugated morphology. The sheets are configured into a variety of shapes that form an isometric matrix of irregular filaments as protected surface area for microbial attachment, and with intervening large pores for water and air circulation.||06-19-2014|
|20140001120||REMOVAL OF PHOSPHORUS FROM SEWAGE BY ELECTRODE METAL ADDITION||01-02-2014|
|20120085702||SEWAGE NITRATE REMOVAL BY FREE-DRAINING ASPHYXIANT FILTRATION AND CARBON ADDITION - In a sewage disposal system, a de-nitrification station is configured as a heap of foam cubes located in an airtight enclosure from which oxygen is excluded. Carbon is added to the incoming nitrified water. The heap of foam cubes is arranged as a free-draining trickle filter, but here under asphyxiant conditions in the enclosure. Anaerobic microbiological reactions reduce the nitrate to nitrogen gas. Effluent from the de-nitrifier is polished by feeding back a fraction of the effluent through the aeration station from which the nitrate water is derived, or a separate polishing station can be provided.||04-12-2012|
|20110284438||BIOLOGICAL FILTRATION SYSTEM WITH SOCKS OF ABSORBENT MATERIAL - In an apparatus for treating wastewater, e.g sewage water, the water passes through absorbent material. The material comprises e.g inexpensive scraps or off-cuts of plastic foam. The pieces of material are contained by being stuffed into lengths of plastic mesh tubing, which are then formed into closed-ended socks. The socks are stacked in layers, and the water to be treated is trickled down through the layers. The socks can also advantageously be used for anaerobic and submerged treatment of wastewater.||11-24-2011|
|20080276977||MOBILITY ASSISTANCE DEVICE - A walker frame is provided which has a generally open space frame and has handle portions that are cantilevered.||11-13-2008|
Patent applications by ROWANWOOD IP INC.