What is the purpose of non-reinforced liners in an intermittent sand filter system?

The purpose of non-reinforced liners in an intermittent sand filter system is to conform to irregular surfaces and follow settlements. This adaptability is crucial, especially in systems where soil conditions may be variable or when the ground underneath has settled over time. By having a liner that can accommodate these changes, the system maintains its integrity and functionality, allowing the sand filter to operate effectively. Proper configuration ensures that wastewater is treated uniformly as it percolates through the sand medium, which is essential for effective filtration and environmental protection. Maintaining contact with the underlying material helps in preventing issues such as bypassing or localized failure in filtration.