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Product Overview

The CrystalStream Water Quality Vault

U.S. Pat. No. 6,797,161

How it works:

• The fundamental principle applied is that things less dense than water float and things more dense than water sink.
• The device has a standing pool at all times.
• A reservoir spans the device from side to side and nearly to the bottom blocking flow from going directly to the outlet.
• Incoming storm water flows through a fine mesh in the trash basket, capturing floating debris and vegetative matter.
• Holding debris above the permanent pool prevents it from eventually becoming water-logged, sinking, and decomposing.
• The water proceeds around baffles slowing and spreading the flow and ensuring that the oil gathers at the top.
• As the water level rises, the oil flows over the edge of the reservoir and the water flows under it to the outflow pipe.
• More importantly, the reservoir provides 300 to 900 gallons of emergency spill protection.
• As the water rises out of the unit in the back chamber it passes through a 3/4 inch coconut fiber filter, designed to remove smaller floating or suspended materials.
• Other elements, such as absorbents, flocculants, or charcoal canisters, can be added to target specific pollutants.
• Maintenance is performed on an as-needed basis (usually twice yearly) through access points on top of the device.
• Floating debris is removed from the trash basket.
• Sediment is pumped from the bottom of the device.
• Oil is pumped out of the storage reservoir.