ID 24621052 © Taqren | 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.:
activated aerated area bacterium basin big biology biomass bionomics cement chemical circle clean clear concrete conservation construction dirty ecology effluent engineering environment environmental factory flow frame group horizontal industry organism plant pollute pollution pool processing purification purified purity recycle recycled recycling reduce rusty secondary sedimentation settler settling sewage site slimy sludge steel storage tank treatment unhygienic waste wastewater water