Algae formation in the course of a sewage treatment plant

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Size: 4000px × 6000px
Photo credit: © Horst Bingemer / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: algae, cleaning, deficiency, fertilizer, green, nitrate, nutrient, nutrients, oxygen, phosphate, phosphorus, plant, receiving, seaweed, sewage, spout, treatment, water