Page 30 of Environmental by Duff Company

duff co service life the length of time an element operates before reaching the maximum allowable pressure drop sludge dirt carbon water and chemical compounds as found in oils solid suspension a mixture of solids suspended in a fluid solids a mass or matter contained in a stream which is considered undesirable and should be removed surface area total area of an element that is exposed to approaching flow see percent free area environmental surge the peak system pressure measured as a function of restricting or blocking fluid flow turbidity stirred up sediment or contaminant in a fluid vacuum reference to pressure below atmospheric viscosity degree of fluidity property of fluid s molecular structure by virtue of which they resist flow the resistance of flow exhibited by a liquid resulting from the combined effects of cohesion and adhesion the unit so f measurements are the poise and the stoke a liquid has a viscosity of one poise if a force of one dyne per square centimeter causes two parallel liquid surfaces once square centimeter in area and one centimeter apart or move past once another at a rate of once centimeter per second there are a great many rude and empirical methods for measuring viscosity which generally involve measurement for the time of flow or movement of a a ball ring or other object t in a specially shaped or sized apparatus aerators built to last our troubled waters ponds and lakes whether they are man made or natural have a natural life cycle they start out clean fresh and clear grow into middle age with weed and algae growth and high nutrient levels and pass into old age as shallow bogs or marsh land before man began to impact the environment this progression too hundred and even thousands of years ponds and lakes now can be created live and die within decades why are the lives of our ponds and lakes so short much of the reason lies in the fact that water is our most abused and least understood natural resource algae is a warning that a water quality problem exists sludge causes foul odors and depletes oxygen killing fish and other beneficial aquatic life and deminishing the water holding capacity of a pond if left unchecked a pond will not only become smelly and unsightly but can gradually turn into a marshy swamp and eventually into dry land aeration is the key to keeping ponds and lakes functional and free from water quality problems by bringing oxygen into the water and increasing the circulation aeration naturally stimulates the water cleanup process and improves the overall quality of the aquatic ecosystem we give nature a boost the dramatic increases in oxygen and circulation by otterbine aerators speed up the biodegrading process of organic waste and fertilizer run-off the added dissolved oxygen helps the bacteria in the pond or lake break down unpleasant odors and organic waste the result is cleaner odor free water call for all your pond and lake water solutions page 468 for additional information call 610-275-4453 or fax 610-279-6299 please call for current prices.

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