Sand filter for swimming pool: features and efficiency, how to choose

Sand filters for swimming pools are mechanical water purifiers. They are simple and inexpensive. Sand filters trap small debris in the water and get rid of unpleasant odor. They are suitable for pools mounted from a frame structure or inflatable models. Let's consider the features of sand filters and a few tips on the choice.

What is a sand filter for a swimming pool

A water filter with sand consists of such elements:

• Hermetically insulated container.
• A housing made of durable material that is resistant to ultraviolet light, detergents and temperature fluctuations.
• A valve for opening the water flow and regulating its mode of movement.
• Separator for liquid separation.
• Filler - sand made of quartz or glass.

The pump blows water into the filter. When it passes through the sand, impurities remain in it. The liquid flows back into the pool. Once every 5-7 days, the sand filter should be cleaned. To do this, it is washed with a reverse flow of water. How often this should be done depends on whether there are a lot of people swimming in the pool, and how often. Also observe the condition of the water. Clean the filter if the water is cloudy and clogged.

Features of sand filters for the pool:

• The filter housing comes in plastic, fiberglass or composite material. Plastic containers consist of two vertical parts connected to each other. The seam between them may crack due to deformation during operation. Enclosures made of horizontal parts fastened with screws and a clamp are much more reliable in operation. Fiberglass and composite tanks are stronger than plastic tanks, but are more expensive.
• The location of the valve affects the compactness of the design. If it is connected from the side, the filter is suitable for a small and shallow pool. If the reservoir is deep, it is better to fit a container with a valve on top.
• Separator, through which the water passes, cleaned from sand grains, can be tubular or cap. The cap system distributes the water in the filter more evenly. They are placed in pools with a large number of visitors. For a small artificial pond near the house, a tubular separator will be enough.

How to choose a sand filter for a swimming pool

Pay attention to such indicators:

• Correspondence of the filter to the size of the pool bowl. The larger the volume, the more powerful you need a pump and a larger container with sand.
• The flow of the pump should be the same power as the flow rate of the filter.
• The size and number of sand grains in the filter determines the quality of water purification and the life of the system. Quartz sand is used for 2-3 years, glass sand is effective longer. It is replaced after 5-6 years. If the filler consists of several layers of sand of different diameters, the water goes through several levels of purification. This is especially important for public pools. If it is a reservoir in a private house for a small family, as a filter filler is suitable quartz sand.
• It is important that the body was made of high-quality material that does not release water harmful substances.

Choosing a manufacturer of sand filters for swimming pools, pay attention to the information on the official websites of the companies. It is worth reading reviews of products and specific models.