ID 317415193 © Paha_l | Megapixl.com
Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
aeration cleaning clearance coagulation concretion construction defend dirty effluent engineering experiment factory filter horizontal hydrology industrial industry iron liquid measurement microbiology modern nature plant pollution pool process purification purified purity recycling refining removing research reservoir resource scouring sedimentation sewage steel storage technology treatment turbidity ultraviolet unit wastewater water watertreatment