Nupac’s Needle shape spherical geometric design creates more bigger surface area so as to effectively capture small droplets in exhaust gas.Meanwhile, creates a lot of bubbles,and improve the aeration pond efficiency of organic wastewater.Compared with volcanic rock, Nupac can provide more surface area, and lighter than Rock.Compared with the biological filter bed,  NUPAC allows a higher superficial flow rate design and a smaller equipment size.