余压过滤系统在工业循环水系统中的应用

砂过滤器是一种传统而高效的水处理设备,广泛应用于钢铁企业循环水系统。目前钢铁企业最常用的砂滤器是高速或中速砂过滤器。本文结合新型浅层砂过滤器的应用,对余压过滤系统技术（余压全滤、余压旁滤）应用于钢铁企业循环水系统进行了分析,并对具体的设计方法进行了详细的介绍,可供实际生产和工程建设参考。

Application of Surplus Pressure Filter System in Industry Circulating Water System

Sand filter is typical and efficient water treatment equipment.It is widely applied in the circulating water system in iron steel works.Sand filter is used for bypass filter in open indirect water cooling system or removing iron oxide scales in open direct water cooling system.In iron steel works,the common filter is rapid speed filter or medium speed filter.The common filter process is as follows： The water is pumped from tank through filters to the next water treatment process.By the currently filter process,energy consumption is high and water consumption is a large sun.The back washing pump and compressed air should be supplied.Using the extra energy of the circulating water system for filter,no application of filter pumps and back washing pumps is needed;it can be named the surplus pressure filter system technology.It can reduce the water equipment and running cost.And it is also significant for energy saving.In line with new type sand filter＇s application,the surplus pressure filter system＇s technology is discussed and analyzed.And the detail design methods are introduced.It also can be used for reference in the engineering and daily production.