Filters for water purification from the well: their choice and application.

At present (with an absolutely unsatisfactory ecological situation), many citizens often think about what they eat, drink and breathe. Since the availability of demand in the market generates supply, it is not surprising that there are a lot of devices for cleaning, offered to customers. One of the first places is occupied by filters for water purification from the well. This is explained by the fact that these filters purify water from a variety of contaminants (insoluble heavy metals, chemicals), and also disinfect water from viruses and bacteria. Filters for water purification from the well are the most important part of the well construction, the durability and quality of which depend on the correct choice of the type and size of the filter. The service life of this device in case of trouble-free operation is 5 - 7 years. Filters for water purification from the well are usually composed of elements such as a filtering (working) part, a settler and a superfilter pipe. This unit transfers water into the well from the sand (the least resistance of the water inlet is the least), and also prevents the collapse of the walls of the well.

In the process of application, the surface of the filter is clogged, since grains of sand settle on its inlet holes and get stuck in them. Also over time, this device is exposed to corrosion, inevitable is the precipitation of various chemicals, which are basically compounds such as iron, magnesium and calcium. These deposits cover the grid, resulting in a clogging of the distance between the pipe and this grid, and also overlapping the inlet openings. Because of this, it is necessary to periodically clean the wells and replace the filter elements.

To create a zone with greater water permeability, stationary filters for water purification are usually covered with gravel, which also provides an increase in the inlet openings and the presence of favorable conditions for the working process.

When selecting these filtering systems, it is necessary to take into account the composition of the rocks in which they will be located:

• For rocks prone to collapse, filters for water purification from the well are made of pipes that have holes and cracks;
• For rocks of pebbles and gravel, these water treatment systems are made of pipes that are covered with a large mesh or have longitudinal slots;
• For sandy rocks, industrial filters are used to purify water with small brass nets, for which selection dry sand is sieved through them: a grid that allows 50% of the bulk material to pass through is suitable.

In order to determine the composition of the rocks, it is necessary to take a sample of the soil for the exploration when drilling a well.

To ensure better selection and establishment of these wastewater treatment systems, one should turn to specialists in this type of activity.