The study looked at using sewage sludge on farmland and forest land. They found that sewage sludge has lots of nutrients that help plants grow better. It also improves soil quality by increasing nutrients and making soil healthier. However, sewage sludge can contain harmful things like heavy metals and pathogens. These can build up in the soil and plants, especially in vegetable areas. It's best to use sewage sludge as fertilizer if the pollutants are low. Making a special type of fertilizer with sewage sludge is a good way to use it safely on farmland.