In the Distributed Sand Filter, flow is then evenly distributed over the media bed through a series of weirs, improving treatment functionality while also minimizing maintenance needs. NCDEQ-compliant.
StormPass Sand Filters
The StormPass Sand Filter product line consists of modular precast stormwater treatment solutions that deliver proven and reliable water quality performance using non-proprietary media. StormPass Sand Filters can function as standalone treatment devices or as treatment with integrated detention.
StormPass Sand Filter Configurations
There are several StormPass Sand Filter configurations, offering design flexibility for
specifiers, cost savings for owners/developers, and simple installation for contractors.
StormPass DSF
StormPass LSF
The Linear Sand Filter model has a linear treatment path inspired by legacy DC Sand Filters and includes a Baffle Wall to trap trash, oils, and other floatables from entering the media bed.
StormPass CSF
With a Custom Sand Filter configuration, there are very few limitations. We can adapt for unique footprints, hybridize Sand Filter concepts, and even integrate with other product lines.
StormPass DSF+
The DSF+ adds detention to the Distributed Sand Filter by extending with traditional StormPass, including downstream storage and integrated outlet control.
StormPass LSF+
The LSF+ adds detention to the Linear Sand Filter by extending with traditional StormPass, including downstream storage and integrated outlet control.
StormPass CSF+
The CSF+ extends the flexibility of the Custom Sand Filter by adding detention with traditional StormPass, including downstream storage and integrated outlet control.
Unique Features & Advantages
Versatile Sizing:
Precast SP1 (single-cell), SP2 (double-cell), and SP3 (triple-cell) StormPass systems can be custom-sized for any site, making them ideal for every stormwater management project.
Superior Strength:
Don’t rely on inferior materials with strength-by-others installation. Precast concrete StormPass systems are designed for AASHTO HL-93 Vehicular Live Loading by default, and they can be custom-designed for site-specific conditions as well.
Simple Design & Install:
With a conventional box culvert style, installation is familiar, easy, and fast for the contractor. For the specifier, the familiar style keeps it simple and also maximizes design flexibility.
Proven Stormwater Treatment:
With the proven reliability of ASTM C-33 Sand, Sand Filters offer trustworthy consistency and efficient stormwater treatment. Influent stormwater enters the Sediment Forebay chamber first, providing pretreatment via settlement of any coarse TSS that would otherwise clog the media bed. Then, flow passes through to the Sand Filter chamber for filtration, exiting through underdrains beneath the media bed. Flow control and overflow bypass are typically built into the systems as well, minimizing cost impacts of what would otherwise be additional structures.
Engineered Products is your partner for advanced stormwater, water, and wastewater management.
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