Which of the following strainer is used for shallow irrigation tube we...
The correct answer is option 'D' - Coir rope strainers.
Coir rope strainers are commonly used for shallow irrigation tube wells in deltaic regions of developing countries. These strainers are made from natural coir fibers extracted from coconut husks. They are widely used due to their affordability, availability, and effectiveness in filtering water.
Coir rope strainers have several advantages that make them suitable for use in deltaic regions:
1. Flexibility: Coir ropes are highly flexible, allowing them to conform to the shape of the well screen. This ensures that the strainer fits snugly against the screen, preventing the entry of fine particles and sediment.
2. Filtration: The coir rope's natural fibers act as a filter, trapping debris and sediment present in the water. This helps to prevent clogging of the irrigation system and ensures that clean water is delivered to the crops.
3. Durability: Coir rope strainers are resilient and can withstand the harsh conditions often found in deltaic regions, including high levels of salinity, fluctuating water levels, and abrasive sediments. They have a long lifespan and require minimal maintenance.
4. Cost-effectiveness: Coir rope strainers are affordable compared to other types of strainers. In developing countries, where resources may be limited, coir rope strainers provide a cost-effective solution for shallow tube wells.
5. Eco-friendly: Coir ropes are made from natural and renewable coconut fibers, making them an environmentally friendly option. They do not release harmful chemicals into the water and can be easily disposed of without causing pollution.
In conclusion, coir rope strainers are the preferred choice for shallow irrigation tube wells in deltaic regions of developing countries due to their flexibility, filtration capabilities, durability, cost-effectiveness, and eco-friendliness.
Which of the following strainer is used for shallow irrigation tube we...
Coir rope strainers are low-cost strainers and are generally used for shallow irrigation tube wells. The main disadvantage of such a strainer is its short life of 3 to 5 years. The rusting of the iron bars of the supporting frame and the loosening of the coir rope which expands on wetting are the causes of its failure.