Selenium Removal—Can We Afford It?by Rodney C. Squires, Binnie California Inc, Fresno, CA, USA,
William R. Johnston, Binnie California Inc, Fresno, CA, USA,
Abstract: The process of biologically removing the element selenium from agricultural drainage water is discussed and an economic evaluation of the process is presented. If by-products can be recovered, the overall economics of the selenium and boron removal process appear to be affordable, particularly if water management efforts can reduce the quantity of drainage water produced and the costs can be spread to all areas contributing to the problem. If the target processes which are the basis of current research prove to be accurate and if the by-products can be marketed at the current estimated values, then the treatment of agricultural drainage water could become a viable industry in its own right.
Subject Headings: Biological processes | Water treatment | Selenium | Drainage | Irrigation water | Economic factors | Wastes
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