Shorts in a deep well – definition, causes, and effective removal methods

Silt is a problem that can occur in deep wells and threaten the quality of drinking water. In this blog post, we will take a closer look at it, creating a definition, identifying the causes of its occurrence, and listing effective ways to remove this sediment. Understanding the phenomenon of silt and its impact on water quality is crucial for ensuring the health and safety of deep well users.

Geological definition of turbidity

Let's start with the definition. Turbidity, commonly referred to as "movingsand", is a geological and geomorphological phenomenon that involves the dynamic movement of sand grains or other fine sediments on the Earth's surface under the influence of various factors such as wind, water, vibrations, or temperature changes. It mainly occurs in desert, coastal, and aeolian areas where sand is abundant and easily displaced.

Dust and deep well

The main task of a well is to gain access to the water-bearing layers of the earth. This aims to provide a constant supply of water. However, it sometimes happens that the water level continuously decreases, and fine sand or silt accumulates at the bottom, which poses a threat to human health as well as the proper functioning of the water installation. In such a case, it is most often the "fault" of sand silt. This phenomenon can be divided into twotypes:

It is worth remembering: Dust can result from both natural processes and human activities, making it a problem that requires appropriate attention and preventive actions.

• The common dust – this type usually does not release water. It is also referred to as powdery dust.
• Sand silt – is characterized by reducing the flow rate of water, separating grains from water, and gradually settling at the end.

What connects the above types of silt is the fact that removing them is not one of the simplest tasks. It is worth adding that silt can also result from improper well design or lack of proper maintenance, which furthercomplicates the situation.

The effects of sand in a deep well

Sand often appears in places where the water source is located in a well on the property. Sand is constantly carried in by the incoming water, leading to a decrease in the water level. There is also a risk of getting stuck in the sand. The lack of any actions threatens the well's collapse, which in turn forcesthe establishment of a completely new deep well.

In the case of installations with check valves and pressure pumps, drawdown can lead to rapid pump seizure. Shortening the suction pipe may be a temporary solution. However, it should be noted that drawdown causes a continuous decrease in the groundwater level in the well, which can eventually lead to its complete drying out. The long-term effects of drawdownmay also include contamination of drinking water, which poses a serious threat to the health of residents.

How to get rid of silt in a deep well?

Unfortunately, complete elimination of the effects of silt is practically impossible. However, there are several methods that allow continued use of the dug deep well. Here are the most popular ones.ways:

It's worth remembering: The dust mite is a very troublesome problem that carries a number of risks.

• Using high-quality filtering devices, such as mechanical filters, which gradually and effectively purify the water. You can of course buy this type of equipment in our store. InIn the current offer, various mechanical inserts are available, such as string or foam.
• Digging a well to a greater depth, to the water source. In this situation, it is best to contact a professional company that offers such services. Without the right equipment and expertise, this task is practicallyimpossible.
• Stabilization of the well bottom with coarse aggregate and lime. This method works only with small amounts of accumulated sand or silt.
• Creation of gravel walls around the well, which can help limit the inflow of sand.
• Lowering the groundwater level, which can be achievedthrough appropriate management of rainwater on the property.
• The use of electroosmosis for drying the area, which is a modern method that can yield positive results.
• Freezing of soil layers, which is a technique used in special cases, especially in challenging geological conditions.

Dust in the well – summary

Dust is a very troublesome problem that carries a number of risks. The best way to avoid it is, of course, prevention. However, if dust has appeared in the well, one should use the methods presented above to minimize the negative effects of accumulated sand and silt. It is also crucial toregular monitoring of the well's condition and taking corrective actions upon noticing the first signs of sand pumping.