A problem that is common for cities around the world is what to do with their wastewater.  In western societies the most common way to treat wastewater is through a wastewater treatment plant where chemicals and biological elements are added to treat the water.  However, for a lot of the world these plants are too expensive and they lack the expertise required to run the plant.  A cheaper and more ecofriendly way to treat wastewater is by using the environment,continue reading