Sand modules are extensively utilized for water purification, operating on a distinct principle to remove suspended matter. Unlike mechanisms involving the passage of water through small orifices impermeable to particles, a sand filter functions by allowing water to percolate through a bed of filter medium, typically 0.75 mm sand and 750 mm deep.
The sand module operates by facilitating the gradual percolation of water through the sand, effectively trapping impurities within the fine pores of the sand.
This filtration technology is particularly well-suited for pre-filtration in disinfection processes, preparation for micro- and ultra-filtration, recirculation systems, rinse water processes, irrigation systems, basin water filtration, and groundwater purification.
Functions and Importance of Sand Module Filters
The sand module within a water treatment system serves multiple essential functions:
Filtration
The sand module is designed to effectively remove solids and larger particulates from the water. Due to its high surface area, sand can efficiently trap particles as water passes through it.
Turbidity Reduction
By filtering out fine particles, the sand module aids in reducing turbidity in the water, thereby significantly improving clarity and quality.
Biological Treatment
In certain systems, the sand module may serve as a habitat for beneficial microorganisms, contributing to the breakdown of organic matter and contaminants, thereby facilitating biological filtration.
Pre-treatment
The sand module often functions as an initial stage in the treatment process, preparing the water for further purification.
Cost-effectiveness
Given that sand is a readily available and inexpensive material, sand modules offer a cost-effective solution for water treatment needs.
In summary, the sand module plays a crucial role in enhancing the efficiency and effectiveness of water treatment systems by providing initial filtration and contributing to overall water quality improvement.