Abstract |
Construction cost, amortization cost, operation and maintenance cost, and total treatment cost were calculated for various wastewater treatment processes at volume flows of 1, 7.5, 10 and 100 mgd. All construction costs were adjusted to January 1970 dollars using the construction cost index; operation and maintenance costs were adjusted to January 1970 dollars using the consumer price index. Amortization costs were calculated based on 25 years at 6% interest. Graphs of construction costs and total treatment costs versus flow for the various processes are given. |