Patent application number | Description | Published |
20090220302 | PLASTIC DETENTION CHAMBER FOR STORMWATER RUNOFF AND RELATED SYSTEM AND METHODS - A plastic, corrugated open bottom chamber includes features such as one or more of (i) sub-corrugation features on corrugation crests and/or corrugation valleys, (ii) stiffening fingers on the bottom of chamber foot portions, (iii) a viewport configuration that intersects only a single corrugation crest and (iv) a unitary end wall. A method of producing chambers with or without a unitary end wall using a common mold tool is also provided. A method of interconnecting chambers to form a chamber rows is also provided. | 09-03-2009 |
20090255868 | STORMWATER FILTRATION SYSTEMS - A stormwater filtration system suitable for treatment of stormwater runoff in a developed environment uses a primary treatment bay that includes a filtration bed with live plant matter. A second treatment bay treats water that exceeds the maximum throughput of the primary bay. A reservoir stores treated runoff to water the plants during dry weather. Removable trays on the surface of the primary filtration bed provide plants suitable for ground cover. Additional bays expand the filtration bed throughput and accommodate extended root systems. A flow control may be provided for the primary treatment bay. | 10-15-2009 |
20100059430 | STORMWATER CHAMBER DETENTION SYSTEM - A stormwater detention system includes a containment row for removing and collecting solids from stormwater. The containment row may be surrounded by a water-impermeable membrane, and designed to receive incoming water before other rows of the detention system. The containment row collects solids from the stormwater before the water is redirected into one or more additional rows, which are water permeable and buried in water permeable media. Filter structure may be associated with a flow system that delivers water from the containment row to the additional rows. | 03-11-2010 |
20110056890 | STORMWATER FILTRATION APPARATUS, SYSTEM AND METHOD - A stormwater filter cartridge includes a housing having a water inlet and a filtered water outlet, and a filter medium disposed along a flow path between the water inlet and the filtered water outlet. A drainage space forms at least part of the flow path and is disposed between a downstream side of the filter medium and the filtered water outlet. A solid wall float tube disposed in the drainage space has an open lower end and open upper end, the solid wall float tube movable between a lowered position that inhibits or substantially restricts filtered water at the bottom of the drainage space from passing to the filtered water outlet and a raised position that permits free flow of filtered water to the filtered water outlet. A fluid reservoir is in fluid communication with the drainage space and is disposed within the housing and above the filter medium for collecting filtered water as water level in the housing rises while the solid wall float tube is in the lowered position. As the housing fills, water level in the housing rises to cause the solid wall float tube to move to the raised position and a negative pressure can be established in the housing that draws fluid through the filter medium. As water level outside the filter cartridge drops, air enters the housing via the water inlet and causes the solid wall float tube to drop to the lowered position, and filtered water in the fluid reservoir backflows through the filter medium and out of the housing through the water inlet while air enters the housing by passing upward through the solid wall float tube so as to enhance rate of backflow. | 03-10-2011 |
20110062088 | FLUID FILTER SYSTEM AND RELATED METHOD - A system and related method for separating floating and nonfloating particulate and entrained, suspended, and/or dissolved contaminants from a fluid. The system includes a tank with a lower chamber spaced from an outlet or upper chamber by a confinement deck. The deck includes one or more sockets for receiving one or more filter units for fluid treatment. In addition, the lower chamber of the tank acts as a pretreatment sump to remove floating and nonfloating particulates, thereby reducing the load on the filter units. The filter units are configured for radial and/or upward flow of the fluid from the lower chamber. The filter units may include one or more filter media through which the fluid pass prior to exiting the tank. The filter units include a removable screening retainer for retaining the filter media and/or to screen relatively large contaminants. The filter unit may be removed for ease of tank maintenance and replacement of filter media. The system allows a method of contaminated fluid treatment under varying flow conditions by directing the fluid radially and/or upwardly through the retainer. Establishing both types of flow through the filter unit improves filtering and extends filter life without compromising desired flow through rates. | 03-17-2011 |
20120111780 | STORMWATER FILTRATION SYSTEMS - A stormwater filtration system suitable for treatment of stormwater runoff in a developed environment uses a primary treatment bay that includes a filtration bed with live plant matter. A second treatment bay treats water that exceeds the maximum throughput of the primary bay. A reservoir stores treated runoff to water the plants during dry weather. Removable trays on the surface of the primary filtration bed provide plants suitable for ground cover. Additional bays expand the filtration bed throughput and accommodate extended root systems. A flow control may be provided for the primary treatment bay. | 05-10-2012 |
20120298590 | FLUID FILTER SYSTEM AND RELATED METHOD - A system includes a tank with a lower chamber spaced from an outlet or upper chamber by a confinement deck. The deck includes one or more sockets for receiving one or more filter units. The lower chamber of the tank acts as a pretreatment sump to remove floating and nonfloating particulates, reducing the load on the filter units. The filter units are configured for radial and/or upward flow of the fluid from the lower chamber. The filter units may be removed for ease of tank maintenance and replacement of filters. | 11-29-2012 |
20130140229 | Stormwater Filtration Systems - A stormwater filtration system suitable for treatment of stormwater runoff in a developed environment uses a primary treatment bay that includes a filtration bed with live plant matter. A second treatment bay treats water that exceeds the maximum throughput of the primary bay. A reservoir stores treated runoff to water the plants during dry weather. Removable trays on the surface of the primary filtration bed provide plants suitable for ground cover. Additional bays expand the filtration bed throughput and accommodate extended root systems. A flow control may be provided for the primary treatment bay. | 06-06-2013 |