Physical Chemical Wastewater treatment covers the range of treatment processes that remove a variety of impurities from water or wastewater. Chemical Physical treatment generally includes the dosing of suitable chemicals to precipitate impurities. This precipitate containing the impurity is then generally removed by sedimentation, flotation and filtration. If undertaken correctly, this process will remove specific impurities and produce treated water suitable for either discharge or next process step depending on overall process. Sludge can then generally be treated and dewatered for subsequent disposal.