Measuring and Removing Dissolved Metals from Stormwater in Highly Urbanized Areas (2014) / Chapter Skim
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Pages 83-89
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83 6.1 Basis of BMP Design Concepts Design of treatment BMPs for highways has received considerable investigation for the past 25 years. Accordingly, there exist designs that are relatively proven in operation and can be constructed and maintained with common methods and equipment.
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84 advantage in an extended maintenance interval. The sub-drain system from the MFD is connected to the GFO vault for treatment.
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85 system (storm drain, or vegetated open channel) is introduced to the treatment vault through a flow splitter.
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Figure 6-1. Urban vault system.
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87 closed conduit)
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88 acre drainage area yields a volume of stormwater runoff of approximately 3,000 m3 per year. For an influent copper concentration in the stormwater runoff of 10 µg/L and desired effluent concentration of 3 µg/L, the required mass of copper adsorbed per year is approximately 22 g.
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89 discharge pipe should be limited to about 100 feet without intermediate access. 6.1.3.1 Configurations #1 and #2: Urban and Rural Highways The concept prototype design shown in Figure 6-1 accepts flow from a splitter structure and introduces it to a storage chamber.
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