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A procedure for predicting the temperature of a thermally loaded captive pond is presented. Using this information, the cooling pond is shown in a special case to have an economic advantage over a cooling tower and to be not much more expensive than a natural body (stream or ocean) of water. This, with the ecological and recreational assets of a captive cooling pond, would seem to encourage their expanded use with large thermo-electric power plants.

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cooling cooling ponds steam power plants

National Agricultural Library - United States of America

Mayfly distribution as a water quality index

1970

Fremling, Calvin R.

standards water quality mayflies mississippi river watershed

National Agricultural Library - United States of America

Control of infiltration and inflow into sewer systems

1970

sewerage seepage

National Agricultural Library - United States of America

In-sewer fixed screening of combined sewer overflows

1970

Feuerstein, D. L.

Field sampling and measuring were conducted in conjunction with laboratory investigations on the characterization of combined sewage and the effects of solids removal on chlorination practices. Sixty combined sewage bulk samples and 60 combined sewage screenings samples retained on screens of 0.125-, 0.25-, 0.5-, and 1.0 in. aperture were analyzed and evaluated. Removals of deoxygenating materials, oils and greases, and bacteria by fixed screens placed in combined sewers were marginal. Reductions in chlorine requirements as a result of prior solids removal by fixed screening appear small. Screens with aperture sizes ranging from 0.0164 to 1.0 in. appear to have very little effect on bacterial concentrations.

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sewage filtration purification combined sewer overflows

National Agricultural Library - United States of America