过滤速率超过4 gpm/sf仍被世界上大多数监管机构视为“高过滤速率” 美国实现更具成本效益的过滤能力的愿望推动了许多水处理行业的发展 公用事业公司选择6 gpm/sf或更高的过滤速率，通常采用 通过提高现有过滤器的等级。提供低浊度水的监管压力， 为了妥善处理废水的回收或排放，需要设置过滤器 与10年或20年前相比，运营受到了更多的审查。高评级的决定 现有过滤器还应考虑的不仅仅是废水浊度 浓度或颗粒计数通常用于高速率批准。这个 还应考虑设施的整体运行。 本文回顾了水厂高速率研究的一些关键结果（在密歇根州和北卡罗来纳州） 在传统的砂和无烟煤双介质过滤器上，流速增加至6 gpm/sf， 介质深度从24到48英寸不等。研究表明，在正常情况下 然而，在运行过程中，这些工厂显然是更高过滤率的候选者 行动立场；在高产情况下，工厂的表现大不相同 周期或问题源（高藻类或锰）水周期。过滤器运行，过滤器 废水周期、冲洗水处理量和设施、单元过滤器运行量 （UFRV），并根据监管限制和 0.10 ntu安全用水目标伙伴关系。审查业务活动的建议 提出了简单过滤出水水质以外的因素，以实现更好的过滤效果 评估更高的过滤率，以及相关设施的改进，作为未来工作的一部分 工厂升级。包括表格、数字。

Filtration rate above 4 gpm/sf is still considered "high rate" by most regulators in the United States. The desire to achieve more cost effective filter capacity drives many water utilities to select a filtration rate of 6 gpm/sf or higher, which is typically implemented through up-rating existing filters. Regulatory pressures to provide low turbidity water, and the need to properly handle recycle or discharges of wastewater has placed filter operations under much more scrutiny than 10 or 20 years ago. The decision of high-rating existing filters should also take into consideration more than just effluent turbidity concentrations or particle counts as is commonly done for high rate approvals. The overall operation of the facility should also be considered. This paper reviews some of the key results of water plant high rate studies (in Michigan and North Carolina) for rate increases up to 6 gpm/sf on conventional sand and anthracite dual media filters, with media depths ranging from 24 to 48 inches. The studies showed that during normal operations, the plants were obvious candidates for higher rate filtration, however, from an operations standpoint; the plant(s) performed much differently under high production periods or problematic source (high algae or manganese) water periods. Filter runs, filter to waste periods, washwater handling volumes and facilities, unit filter run volumes (UFRV), and overall plant reliability was discussed in light of both regulatory limits and Partnership for Safe Water goals of 0.10 ntu. Recommendations for review of operational factors outside of simple filter effluent water quality were presented to allow for better assessment of higher filtration rates, and related facility improvements as part of future plant upgrades. Includes tables, figures.