Jensen Deflective Separator (JDS) Stormwater Treatment Unit

Transcription

1 Jensen Deflective Separator (JDS) Stormwater Treatment Unit

2 A Full Capture, Screening, Swirl-Concentrating, Stormwater Treatment Unit The Jensen Deflective Separator (JDS) is a fullcapture, screening, swirl-concentrating, stormwater treatment system. With no moving parts, the JDS is uniquely able to screen trash and debris (including floatables and both neutrally and negatively buoyant materials), from stormwater, all without blocking the screen. The JDS also captures total suspended solids (TSS); sediments; as well as oil, grease, and other total petroleum hydrocarbon (TPH) pollutants from stormwater runoff. Captured pollutants are retained without scouring, even under high-flow bypass conditions. JENSENSTORMWATER.COM

3 JDS units are available in precast manholes as Inline units with integral bypass weirs. For larger storm conveyance systems, Offline units connect to the storm drain pipeline by a diversion manhole or vault structure. The smallest units can also be deployed in drop-inlets or catch-basins. LAND USE APPLICATIONS: New and Existing Residential and Urban Developments Commercial Developments Industrial Sites Roadway Improvements Parking Lots Pre-treating Detention and Infiltration systems Pre-treating Bio-Retention and Bio- Infiltration We re pleased to introduce the new, proven JDS treatment process; designed to meet the stormwater needs of municipal and private developments. Walter Stein, PE Jensen Stormwater Systems Division Manager STORMWATER SYSTEMS

4 Key Features & Benefits The JDS deployed in underground manholes or TREATMENT APPLICATIONS Full Capture Trash & Debris Storm Water Treatment Unit (SWTU) Stand-alone SWTU Pre-treatment: Detention & Infiltration Bio-Retention & Bio-Infiltration Rainwater Harvesting Cisterns Fine Media, Membrane and Sand Filters Wetlands, Ponds and Swales Oil/Water Separators Pump Stations NEW & RETROFIT DEVELOPMENT APPLICATIONS Residential, Commercial and Industrial Parking Lots and Parking Structures Roads, Streets, Highways and Freeways Intermodal Transportation Facilities Solid Waste Transfer Yards and Landfills EFFICIENT CAPTURE & CONTAINMENT Non-blocking, swirl concentrating screening unit Total Suspended Solids (TSS) Course sediment and sand Full Capture 100% of trash and debris equal to or greater than the screen aperture 100% floatables control 90% of sediment as small as one third the screen aperture Removal of free oil and grease with the use of an oil baffle Additional oil sorbent options available Screen, non-scouring sump, and oil baffle retain all captured pollutants for removal NON-BLOCKING & NON-MECHANICAL No moving parts Screen will not clog No power requirements Configured within the existing drainage infrastructure JENSENSTORMWATER.COM

5 vaults enables greater land-use options than larger, land-based water quality treatment systems. COST-EFFECTIVE TREATMENT ALTERNATIVE JDS is a more cost effective treatment per Cubic Feet per Second (CFS) of stormwater processed as compared to other structural BMPs. UNOBTRUSIVE & EASY TO INSTALL JDS units are configured inside typical precast manholes and installed below ground as typical storm drain structures. ECONOMICAL & EASY MAINTENANCE Standard vactor/vacuum truck readily removes all pollutants Maintenance cleanout achieved from the surface No confined space entry Safe, and eliminates exposure to personnel STORMWATER SYSTEMS

6 The JDS features a large treatment flow range. Precast Inline and Offline units treat flows from 0.7 to 73 CFS. Cast-in-place units treat flows from 73 to 273 CFS. Treatment Flow Process Using the proven continuous deflective treatment process, the JDS Full Capture device captures 100% of trash and debris particles equal to or greater than the screen apertures of either 2400 or 4700-micron (µm). Vortex separation settles fines through a larger range of flow rates than in JENSENSTORMWATER.COM

7 3 4 5 STANDARD JDS INLINE UNIT Water entering the separation cylinder forms a spinning vortex, capturing all floatables and swirl concentrating suspended solids to the center of the separation chamber. 5 The vortex flow pattern produces a washing force across the screen face, preventing it from becoming blocked, while allowing stormwater to pass through the screen and flow beneath the oil baffle. 8 6 Oils, greases and other Total Petroleum Hydrocarbons (TPHs) are trapped within the integral oil baffle attached beneath the inlet bay. 7 Screened stormwater moves toward the outlet pipe. 1 Stormwater enters the JDS unit from one or more inlet pipes, a grated drop or curb inlet. 2 Incoming waters collect in the bay of the inlet trough. 3 Waters enter the separation and screening cylinder through the volute entrance in the diversion weir wall. 8 Settled and swirl concentrated suspended solids are captured in the sump which is typically cleaned out by a vactor truck. Flows larger than the JDS unit s design treatment flow bypass over the diversion weir. Bypass flows do not scour out previously captured pollutants. a classic settling tank of the same size. Offline Unit JDS Offline units are placed adjacent to the storm drain or channel alignment and have a separate diversion structure with a high-flow bypass weir. STORMWATER SYSTEMS

8 JDS Sizing Table Casting Config. Model Designation Treatment Flow Rate (nominal) cfs Approximate Treated Catchment Area (Acres) Manhole Internal Diameter (ft) (in) External Foot Print Diameter (ft) Depth Below Pipe Invert (ft) PRECAST ONLINE + OFFLINE OFFLINE ONLY CAST-IN-PLACE OFFLINE JDS G JDS JDS JDS JDS JDS JDS JDS JDS JDS JDS JDS JDS JDS JDS JDS JDS JDS JDS JDS JDS JDS JDS JDS JDS JDS JDS JDS JDS JDS JDS JDS Typical and site-specific plan and profile drawings are available for all JDS units. JensenStormwater.com 521 Dunn Circle, Sparks, NV,