Lighting promotes sulfate removal and improves microbial community stability in upflow anaerobic sludge bed reactors under low ratio of chemical oxygen demand to sulfate.

Summary: Cleaning up dirty wastewater that is full of sulfur can be really tricky. Usually, different types of bacteria in the water fight with each other, which slows down the cleaning process and leaves the water dirty. But scientists found a bright idea: adding light! By shining light on the water tanks, special light-loving bacteria wake up and help clean up the toxic sulfur. This teamwork makes the water-cleaning bugs stronger, bigger, and much better at their job. In fact, with the right light, they removed over 85% of the sulfur. It is a glowing success for treating dirty water!