Questions? +32 460 226 991 (English), +33 644 634 490 (French). EU-wide delivery!
Questions? +32 460 226 991 (English), +33 644 634 490 (French). EU-wide delivery!
Most searched for brands of measuring and regulation technology
A water borehole allows the extraction of groundwater using high-performance submersible pumps. To ensure the water is of high quality and safe for health, it is necessary to maintain its cleanliness, even if the borehole is only used for extracting utility water. Submersible pumps for boreholes are designed only for pumping clean water, and an excessive amount of solids significantly shortens the lifespan of the deep well pump.
Water entering the borehole through perforation naturally brings impurities, which then settle in the borehole. Even the best-constructed borehole with the cleanest groundwater will gradually become clogged. Therefore, when constructing a borehole, one should not forget about the so-called sediment trap, which serves to capture and settle these impurities.
Excessive clogging of the borehole can also occur if we do not regularly draw water from the borehole and due to errors during the construction of the borehole. The conditions in which the borehole is located also have a significant impact on the quality of the water and the amount of impurities from the soil. Clayey soil or iron-rich subsoil results in faster clogging of the borehole and poorer water quality, so it is necessary to clean the borehole more frequently.
Just like when cleaning a well, it is always better not to postpone cleaning boreholes and to focus on prevention. Overgrown bacteria are present in the water even before their presence is reflected in the taste, smell, or colour of the water, and the sooner the problem is addressed, the easier it is to clean the borehole. If you have doubts about the quality of the water, it is advisable to have a water analysis done. Cleaning borehole water can be carried out all year round, so there is no need to wait for anything.
if the borehole has not been used for some time (even in the case of winterizing the borehole)
regularly every 4 to 7 years, depending on the quality of the water and the conditions of the borehole
when the quality of the water deteriorates
when there are problems with water extraction/pump (low pressure, borehole drying up, etc.)
after natural disasters such as floods, inundations, etc.
before installing a submersible pump into the borehole (after replacing or maintaining the pump)
Proper and regular maintenance is crucial for maintaining high water quality. Water from an uncleaned borehole contains an excessive amount of microorganisms and soil impurities, which can be harmful to health, even if it may not be apparent at first glance. Sediment that gradually settles at the bottom and walls of the borehole can result in damage to the submersible pump and the entire borehole.
If the borehole is not cleaned for a long time, bacteria contained in the water multiply, leading to a decrease in water quality. The first sign of increased microorganisms is worsened taste of the water, followed by cloudiness and odour and it becomes undrinkable.
If you notice that the water smells like eggs, it is either caused by overgrown bacteria in the water and/or a high content of iron and manganese in the subsoil. In both cases, it is necessary to clean and disinfect the borehole.
Submersible pumps for boreholes are designed to pump clean water with a defined content of solid particles in the water that the pump can handle. If there is an excessive amount of sandy material and other abrasive substances in the water, the pump will be damaged and may even be completely destroyed.
Impurities also settle on the walls of the borehole, reducing its diameter and causing insufficient water around the pump. The flow of water around the deep well pump is important for its cooling. If the borehole pump is not sufficiently cooled, it can overheat, leading to complete destruction of the pump. In the case of borehole narrowing, there is also a risk of mechanical damage to the submersible pump. In clogged boreholes, the yield of the borehole may decrease: if there is no protection against dry running installed or the submersible pump does not have integrated dry run protection, the pump may be destroyed.
Sediment deposits restrict water inflow into the borehole, thereby reducing the amount of water in the borehole. An excessive amount of solids in the pumped water also reduces the efficiency of the pump, and thus the pressure of the pumped water.
If the borehole is not cleaned for a long time, sediments gradually clog the borehole so that water cannot find its way into the borehole. In such a case, the water source finds another path to flow through and bypasses your borehole. This results in a complete loss of water in the borehole.
There are several ways to clean a borehole. Some require expert knowledge, experience, and equipment, but there is also a method that you can handle yourself. However, you should never perform borehole cleaning on your own if there is a higher amount of iron or manganese in the water or nitrates. In such cases, it is better to leave the cleaning to professionals. The same applies to deep boreholes, if there is a risk of the pump getting stuck, or when special equipment is needed.
In this method of cleaning the borehole, cleaning is done with a stream of water. It is suitable for heavily clogged boreholes and can handle settled deposits of impurities, but there is a risk of damaging the borehole, so it is better to entrust water cleaning to professionals.
Cleaning the borehole with air, known as airlift, is done by injecting air to the bottom of the borehole, where it stirs up the settled sediment, which is then sucked out through a second pipe. This method is suitable for narrow boreholes and removes even coarse impurities. It can only be used for sufficiently productive boreholes and the borehole construction must be of high quality, to avoid damage. Special equipment (injector, powerful compressor, etc.) is needed for airlift application, so this method is not suitable for DIY borehole cleaning.
Cleaning the borehole with a pump is a method suitable for cleaning boreholes of all diameters and for deep boreholes. The method is ideal for DIY borehole cleaning and can effectively clean boreholes clogged with clay, rust, and coarse impurities. For cleaning the borehole with a pump, it is necessary to choose a pump that matches the conditions of the borehole (borehole diameter, delivery height, maximum immersion depth, etc.), and it is necessary to consider that the pump will undergo significant wear or be completely destroyed.
An excellent pump for borehole cleaning is a vibration water pump or a screw pump. When selecting them, you can follow the guide for submersible pumps: how to choose a submersible pump for a borehole. Sludge pumps are not suitable for borehole cleaning due to their diameter. Never use submersible pumps for borehole cleaning, as they are not designed for pumping contaminated water and you would destroy the pump.
This provides an ideal opportunity for pump maintenance and possible repairs, which contributes to a longer lifespan of the borehole pump.
With a large amount of sediment on the walls, the borehole diameter decreases, so proceed as carefully as possible. The pump can get stuck when being pulled out of the borehole. A specialized company can help you with this problem, but even then, it may happen that the pump gets damaged and/or cannot be removed from the borehole.
We recommend using a submersible vibration pump for boreholes, which is characterized by high performance, high durability, and low acquisition costs. Ideally, all the water from the borehole should be pumped out.
When cleaning the borehole or well, it is important to ensure that the water source is as clean as possible and that the water is not re-contaminated.
Disinfect the borehole with Savo or a similar disinfectant in the correct ratio. Cleaning the borehole with Savo is commonly used by professionals, but it is important to follow the manufacturer's instructions for its use.
When installing the submersible pump into the borehole, follow the instructions for your pump.
After cleaning, it is necessary to let the borehole settle for at least 48 hours, so that fine fractions of sediment, which naturally remain in the borehole even after cleaning, settle to the bottom of the borehole. Before reusing the water from the borehole, it is advisable to perform a short-term water draw outside the water supply network.
Bola.cz
