求翻译：与传统的砂滤器相比，核桃壳过滤更适合过滤游离油和悬浮固体。目前，核桃壳过滤方法用于处理油田产生的水、炼油废水以及其它类型的废水。因为减少了反冲洗的水量以及设备的重量和占地面积，所以新式脉冲核桃壳过滤器是很多海上石油生产系统的理想产品。是什么意思？

Compared with the traditional sand filter, walnut shell filter is more suitable for filter free of oil and suspended solids. Currently, walnut shell filter method for the treatment of oilfield produced water, oil refineries, and other types of wastewater. Because of reduced backwash water quantity and weight of the equipment and covers an area of, so the new pulse of walnut shell filter is the ideal product for many offshore oil production system.