sas.usace.army.mil/Portals/61/docs/SHEP/Reports/GRR/47 Screening Level Eval of Measures to Improve DO in the Savannah River Estuary It is hard to sell a better mouse trap when the bureaucrats do not know what a mouse is. Section 2. Worldwide Applications of Oxygen Supplementation to Rives, Lakes and Harbors 2. Existing Oxygenation System Installations. I. Background . Some of the worlds most beautiful harbors and lagoons and its most heavily trafficked seaports face severe flooding problems during storm tide seasons. But remedial steps to minimize flood damage may in turn cause other water quality dilemmas, which must also be addressed at the same time. Venices magnificent architecture is being threatened by each successive flood season, yet its historic lagoon would also experience serious oxygen depletion if isolated by tidal gates. The busy Thames River’s innovative tidal gates are successfully holding back potentially damaging flood tides at this time, but are accompanied by mobile oxygenation barges which alleviate consequent D.O. deficiencies. Other oxygen poor harbors on the other hand, such as Shanghai Harbor, sustain serious pollution damage during dry seas ons and the serious malodorous conditions which have plagued the citys inhabitants for decades have also caused the fish and shrimp to die until rehabilitation efforts were undertaken in 1988, and in 2001 when an oxygenation barge was deployed there with good results. Savannah Harbors main pollution source is decaying vegetation from the surrounding marshes. The Stockton, California Deepwater Ship Channel also must address constant new nutrient enrichment problems along with combined sewer overflows. Manchester Ship Canal in England has excessive algae growth, caused by heavy nutrient load and accumulation of sludges on the bottom, with consequent fish kills. Ship traffic restricts equipment location, which precludes some types of aeration equipment. However, modern oxygenation de signs using pure oxygen to raise the D.O. levels show great promise in solving worldwide harbor water quality dilemmas as well as those of rivers, lakes and bays.II. Descriptions of oxygenation syst ems and specific equipment site data Described below in approximate chronological order according to installation dates, are successfully operating installations which use HPO technology to achieve regulatory compliance and enhance resident fisheries. Richard B. Russell Reservoir Georgia Newman Lake Washington Camanche Reservoir California Thames River England 1 Tombigbee River Alabama Logan Martin Dam Alabama Emscher River Germany Hallwilersee Lake Switzerland Patrick Henry Reservoir Tennessee Douglas Reservoir Tennessee Fontana Reservoir Tennessee Androscoggin River Maine Cardiff Bay Barrage England Amsterdam Canals, Netherlands Suzhou Creek, Shanghai Harbor
Posted on: Tue, 01 Jul 2014 13:32:44 +0000
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