Well water treatment includes methods such as reverse osmosis, resin hardening and nanofiltration. Today, factors such as salinity of well water, sewage and wastewater pollution as well as suspended particles have turned to well water treatment methods.
The history of well water treatment The use of groundwater resources in Iran has a very historical ancient. Our predecessors are digging aqueduct when they need water and for centuries managed and optimized their water resources. The aqueduct is an underground corridor that transfer water from the aquifer or the groundwater table to the lower ground. In fact, the aqueduct consists of several wells that are vertically drilled on a ramp and these wells are connected to the ground with a milder gradient corridor from the ground.
In recent years, with the growth of industrial and agricultural production as well as population growth, there has been more pressure on water supply especially from underground sources which resulted in the establishment of several wells in different parts of Iran. In this meantime, the use of deep wells unlike the aqueducts is not without inconvenience and the need for well water treatment is highly felt.
Salty or bitter well water contaminated with human sewage and industrial wastewater, turbidity and sand particles in the water because it was turning to water wells.
The methods of well water treatment Well water treatment methods are designed according to their quality. In some cases, it can be used purely by chlorination. Chlorine is one of the simplest methods of water purification that can destroy bacteria, germs, and water organisms. But some water wells will require more refinement due to salinity (bitterness).
The use of industrial sweeteners is also used in well water wells. Also, sea water desalinating can be used to purge the well near the sea. Methods such as reverse osmosis or RO, the use of resin hardening as well as nanofiltration are the most common methods of well water treatment.
In the reverse osmosis method, salinity, solubility and water hardness are separated by a semi-permeable membrane and with the help of a high pressure pump and as a result, water is produced with high purity and good quality. The resin hardening method in well water purification is merely a difficulty temporary water contains calcium and magnesium ions from water and other cations and anions of water will remain there. Because of its structure and geological form, the water well acts like a large sandy filter and therefore a very large fraction of particles suspended and sand does not pass. But the same natural composition of the earth for various reasons and due to factors such as earthquake or extreme decline levels of groundwater collapse and cause the well to pump a lot of sand and gravel. In such situation, the use of a variety of sand filtration, hydro-cyclone or, if needed, ultrafiltration is recommended in well water treatment.
Application of well water treatment Agricultural well water treatment device is one of the most commonly used well water treatment applications. In the agricultural industry because of value added low production and because of the very high volume of water consumption, the price of water purifier is very important. According to the type of agricultural product and its use in choosing the purification method plays a direct role. If using rainwater or greenhouse irrigation methods; thus, the use water sweet is recommended with less difficulty. However, the use of well water treatment can increase the productivity of agricultural products. To see the decline in the productivity of agricultural products due to water salinity, download the below link.
The use of well water treatment has another applications such as drinking water, industrial and hygienic. By the way, well water is an important and limited source which can be used with choosing an appropriate way of purification.