本文报道了硝酸盐去除厂废盐水生物脱氮的研究。目的是开发一种处理废盐水的方法，使其或其部分可重复使用，并减少对废水排放到当地下水道的依赖。这项研究的重点是努力减少盐的使用和废盐水。预计通过本研究可以降低盐成本，并减少使用当地下水道排放废盐。生物脱氮和硫酸盐去除几乎消除了所有卤水排放，并使卤水得以循环使用。作者对生物脱氮进行了简要讨论，并给出了使用该工艺进行的多项试验结果。本文的一半是关于成本问题的，包括中试工厂、资本和化学成本。

This paper reports on a study of biological denitrification of waste brine from a nitrate removal plant. The objective was to develop a method of treating the waste brine to render it or portions of it reusable and reduce dependence on waste discharge to a local sewer. The study focused on efforts to reduce salt use and waste brine. It was anticipated that salt cost reductions as well as reductions in the use of the local sewer for discharge of waste salts may be achieved by this study. Biological denitrification and sulfate removal eliminated virtually all brine discharge and enabled recycling of the brine for further use. The author offers a brief discussion of biological denitrification and gives results of a number of tests using the process. Half of this paper is devoted to cost issues, including pilot plant, capital, and chemical costs.