Before revision: In food processing and beverage-making industries, sludge can have high protein content and other nutrients that can be used for beneficial purposes such as animal feed, avoiding disposal at a landfill.
After revision: In food processing and beverage-making industries, sludge can have high protein content and other nutrients that can be used for beneficial purposes such as processing for animal feed; this avoids having to dispose of the sludgeacan contain at a landfill.