Sewer taxes savings

Table 7.2 Procedure for Estimating Potential Water Cost and Sewer Taxes Savings (courtesy of Delta Cooling Towers, Carborundum Corp., Fairfield, N J)...

An important factor that should be considered in the economic analysis is the potential savings of water costs and sewer taxes that could be realized by choosing one system over another. Table 7.2 outlines a good procedure for estimating potential water cost savings. 

In a few applications, both retentate and filtrate are important. For example, if a valuable product or by-product is a pollutant in a waste stream, recovery and use of the product will often pay for the pollution abatement. The clean permeate may then be reused in the plant in cases where the plant effluent is at elevated temperatures, the hot permeate may be reused in the plant saving additional energy costs. There are only a few applications where UF can be justified for pollution abatement without the recovery of a valuable by-product or energy credit In these cases, the economic incentive is found in the avoidance of a sewer tax or shut down by the Environmental Protection Agency. 

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