Functions of Volcanic Rocks in Water Treatment
1.
Physical Filtration & Adsorption
The porous and loose structure of volcanic rocks can intercept suspended impurities in water, and its huge specific surface area can effectively adsorb residual chlorine, heavy metal ions and peculiar smell in water, purifying water quality preliminarily.
2.
Cultivating Biological Filter Layer
The rough surface of volcanic rocks is very suitable for the attachment and growth of nitrifying bacteria and other beneficial microorganisms, which can decompose ammonia nitrogen and organic pollutants in water, and is widely used in fish tank filtration and aquaculture water circulation systems.
3.
Regulating Water Quality Stably
Volcanic rocks can slowly release trace mineral elements, slightly adjust the pH value of water to a weak alkaline range, and help stabilize the water environment.