Physicochemical Wastewater Treatment is a technique of treating waste water to eliminate greases, oil, heavy metal, organic substances, toxic and suspended matter. This technique is useful to handle difficult to decompose substances present in waste water. This technique is applied to make effluent water as process water. Steps like neutralization, coagulation, flocculation, membrane filtration and sludge treatment are considered as important parts for successful execution of Physicochemical Wastewater Treatment. Each step of this procedure is executed under supervision of skilled personnel to avoid any error.