Why Do Shallow Sand Filters And Side Filters Need To Be Used in Circulating Water Systems?

What is a shallow sand filter?

The shallow sand filter consists of one or more standard high-speed filtration units. The water flows through the internal water distributor and water collector. It uses quartz sand media to remove particulate matter and reduce turbidity.

What are the characteristics of shallow sand filters?

It is characterized by high filtration speed and low pressure loss; modular setting and small footprint; manual, semi-automatic, and fully automatic backwashing are optional; the backwash water source can be selected from within the system, a water tower, or an external water source, and can be automatically switched; filtration Unit size is available from DN600 to DN2400; material carbon steel and stainless steel are available.

Why should shallow sand filters be used in cooling circulating water systems?

Because the cooling circulating water system is an open system, dust, impurities in the air, and scale in the pipelines will enter the water and worsen the water quality; more impurities will easily block the copper tubes of the heat exchanger, reduce the heat transfer rate, and affect the entire system. Cooling system effect;

The shallow sand filter can filter impurities in the water, reduce turbidity, reduce the clogging rate of copper pipes, and maintain the normal operation of the cooling system. Therefore, the cooling circulating water system requires a shallow sand filter.

Why should side filters be used in cooling circulating water systems?

There are two reasons why side filtering is used:

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

2. Circulation: The water system is cyclic, and the effects of side filtration are superimposed. In the long run, the water in the system has been filtered and the filtration effect is achieved;