Solar-powered pumps aerate Delaware waterways
Six floating pumps, called SolarBees, were recently submerged in Delawares Torquay Canal and Bald Eagle Creek, as part of a year-long experiment to preserve fish life within the two tributaries. Initiated by a variety of public- and private-sector groups, including donations from landowners along the canal, the project involved leasing the pumps for installation in the waterways. Averaging 7 ft. deep, with holes reaching 10 to 18 ft. deep, the waterways were plagued with a buildup of organic matter, which turned into hydrogen sulfide gas within the holes. The gas, which then formed pockets that bubbled up to the surface and burst, caused fish to become sick and die. In addition, the exuding gas caused an unpleasant smell that resembled the odor of a rotten egg. By anchoring the floating pumps in the waterways, the project has relieved the combined odors of hydrogen sulfide and the decay of dead fish. The pumps circulate water from the bottom to the top of the canals, increasing dissolved oxygen levels to prevent the formation of hydrogen sulfide. Made of stainless steel, each pump measures 16 ft. in dia., with 3 solar panels that power a 3-ft. propeller (located just below the waters surface). Navigation lights warn boaters of the pumps presence. Duplicating a slow-moving stream in an enclosed body of water, the pumps draw a total flow rate of up to 10,000 gals. per min., circulating water from below the machine to the top of the reservoir for continuous surface renewal. Solar-powered battery packs enable 24-hr. operation, even in low sunlight conditions. Solarbees come in variety of sizes and models to fit ponds, lakes, reservoirs, and water tanks. The pumps are ideal for improving the quality of wastewater, freshwater, and potable water. Benefits include controlling blue-green algae, enhancing the taste of drinking water, and reducing energy consumption and the need for dredging in wastewater.
