AWWA ACE99516

This paper describes three technologies used to control algae and reduce operational impacts for the City of Port Jervis, New York, reservoir water supply system. They include: artificial destratification; nutrient interception; and, withdrawal depth modification. Each was evaluated for its effectiveness in reducing phosphorus, iron, and manganese. Phosphorus reduction directly affects algal growth in the Port Jervis system, and iron and manganese affect aesthetic quality and efficiency of treatment. The evaluation indicated that a combination of destratification of the terminal reservoir and modification of the withdrawal depth of upstream reservoirs may potentially provide the greatest water quality benefit; however, construction costs are high compared to the expected benefits.

Product Details

Published:

01/01/1999

ISBN(s):

1583210016

Number of Pages:

27

File Size:

1 file , 750 KB