Abstract
The operation and performance of a municipal ridge and furrow liquid waste disposal system in use since 1959 was monitored for a year and a half. One hundred and fifty thousand gallons a day of trickling filter effluent are disposed into the soil via four 1-acre basins. A heavy stand of grass left unharvested over the winter apparently contributes to successful operation. The changes in infiltration rates and quality of the infiltrate with season and under various loading and operating conditions are examined, as are companion field and indoor lysimeter studies comparing various design and operational factors that may influence infiltration protection of ground water.
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