Why Do Circulating Water Systems Use Shallow Sand Filters And Side Filters?

What is a shallow media filter?

A shallow sand filter consists of one or more standard high-speed filter units. Water flows through an internal water distributor and water collector, using quartz sand media to remove particulate matter and reduce turbidity.

What are the characteristics of shallow sand filters?

Its characteristics are high filtration rate, low pressure loss; modular setting, small footprint; manual, semi-automatic, and fully automatic backwashing options; backwashing water sources can be selected from the system, water tower, or external water source, and can be switched automatically; filter units are available in multiple sizes; materials carbon steel and stainless steel are available.

Why do we need shallow sand filters in cooling water circulation systems?

Because the cooling water circulation system is an open system, dust and impurities in the air and scale in the pipes will enter the water and deteriorate the water quality; more impurities will easily block the copper tubes of the heat exchanger, reduce the heat exchange rate, and affect the effect of the entire cooling system; shallow sand filters can filter impurities in the water, reduce turbidity, reduce the blockage rate of copper tubes, and maintain the normal operation of the cooling system, so cooling water circulation systems require shallow sand filters.

Why choose side filter?

There are two reasons for side filter:

1. Cost: The circulation volume of the cooling system is generally large (some systems can reach up to 4000T/H), and the cost of full filtration is high;

2. Circulation: The water system is circulating, and the effect of bypass filtration is superimposed. In the long run, the water in the system has been filtered and the filtering effect has been achieved.