本文讨论了四种不同过滤系统为期13个月的中试试验，以确定 减少海水淡化反渗透（RO）污染的最佳预处理方法 膜。在已完成的九个主要项目调查中，本文重点比较了预处理方案，包括:慢砂过滤器； 常规治疗-凝血和 澄清+颗粒介质过滤器； 浸入式超滤膜； 超滤膜； UF在有或无凝固和凝固的情况下运行 澄清和 每个预处理系统后面都有一个 分开的火车。介绍了赤潮模拟事件的背景、预处理试验结果和反渗透污染趋势。 研究结论表明:生物过滤和超滤都可以 为海水反渗透提供成功的预处理 海水淡化 颗粒介质过滤器需要更加小心 比UF或慢速砂滤器优化； 有效去除上游的藻类细胞 颗粒介质过滤器或UF将减少 生物污染；和 慢速砂滤器简单有效，但 要求占地面积增加50%。包括表格、数字。

This paper discusses a 13-month pilot test of four different filtration systems to determine the optimum pretreatment approach to minimize fouling on seawater desalination reverse osmosis (RO) membranes. Of the nine major project investigations that were done, this paper focuses on a comparison of pretreatment alternatives that include: slow sand filters; conventional treatment - coagulation and clarification + granular media filters; immersed ultrafiltration (UF) membranes; pressure UF membranes; UF operated with and without coagulation and clarification; and, each pretreatment system is followed by a separate RO train. Background on a red tide simulation event is presented, along with results of pretreatment testing, and RO fouling trends. Study conclusions indicate that: both biological filtration and ultrafiltration can provide successful pretreatment for seawater RO desalination; granular media filters require more careful optimization than UF or slow sand filters; effective removal of algal cells upstream of granular media filters or UF will reduce biofouling; and, slow sand filters are simple and effective, but require a 50% larger footprint. Includes tables, figures.