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In civil engineering (specifically hydraulic engineering), a hydrodynamic separator (HDS) is a stormwater management device that uses cyclonic separation to control water pollution. They are designed as flow-through structures with a settling or separation unit to remove sediment and other pollutants. [ 1 ]
Ocean Therapy Solutions (OTS) is a company owned by actor Kevin Costner. He acquired the company from the United States government for US$24 million in 1995. [ 1 ] The company specializes in developing centrifugal oil-water separators .
Spiral separators of the wet type, also called spiral concentrators, are devices to separate solid components in a slurry, based upon a combination of the solid particle density as well as the particle's hydrodynamic properties (e.g. drag).
Infiltration plays a critical role in LID site design. Some of the benefits of infiltration include improved water quality (as water is filtered through the soil) and reduction in runoff. When distributed throughout a site, infiltration can significantly help maintain the site's natural hydrology.
Tunnels may be cheaper than basins, as they do not require pumps to move the water. [6] The outlet is generally a restricted-flow drain from the detention vessel, with a weir for containing detritus. [3] Detention vessels delay water's delivery downstream, and possibly creates a later water level peak post-rainfall.
A separation process unit such as a coalescer is often used to physically trigger a separation of the water and the oils. [19] For the treatment of potable water the overflow from the lamella clarifier will require further treatment to remove organic molecules as well as disinfection to remove bacteria. It will also be passed through a series ...
Using permeable paving, however, can reduce the cost of providing larger or more stormwater BMPs on site, and these savings should be factored into any cost analysis. In addition, the off-site environmental impact costs of not reducing on-site stormwater volumes and pollution have historically been ignored or assigned to other groups (local ...
Water treatment is any process that improves the quality of water to make it more acceptable for a specific end-use. Membranes can be used to remove particulates from water by either size exclusion or charge separation. [19] In size exclusion, the pores in the membrane are sized such that only particles smaller than the pores can pass through ...
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