Before revision: Types of wastewater treatment plants include: Sewage treatment plants Industrial wastewater treatment plants Agricultural wastewater treatment plants Leachate treatment plants Sewage treatment plants Aeration tank of an activated sludge process at the wastewater treatment plant in Dresden-Kaditz, Germany Industrial wastewater treatment plants Agricultural wastewater treatment plants Leachate treatment plants Leachate treatment plants are used to treat leachate from landfills.
After revision:    Leachate treatment plants are used to treat leachate from landfills.