Sewage: Sewage is a type of water that is due to environmental pollution or the influence of pollutants and has an adverse effect on quality. There are many techniques used for wastewater management. wastewater.Wastewater management techniques:-1-Operational miscellaneous chemical system:This system is used for excreta transported in sewers and wastewater industries that use air and a biologically agglomerated mass of fine particles composed of bacteria and protozoa. Method: Firstly, air and oxygen are supplied to the wastewater excreta or industrial wastewater, which reduces the amount of organic content in the wastewater and produces the biological mass. Both this wastewater and biological mass are mixed with each other and called “mixed liquor”. This is also called primary treatment. Sufficient primary treatment is carried out with wastewater. Then this excess mixed liquor is poured into the setting chamber and treated with the supernatant liquid above a solid residue. The solid residue is called sludge and discharges into the aeration system and the new wastewater enters the tank. This process is called fractional process and the sludge is called “return operational sludge” and the sludge present in huge quantity is called “surplus operational sludge” or “unnecessary operational sludge” removed by decomposition treatment. This decomposition process can occur in the presence or absence of oxygen.2-Carbon filtration treatment:It is the process through ...... the middle of paper ......n which occurs produces a somatic separation process. No chemical reactions occur in the system. The water is distilled by the distillation system to remove scum; it can be said that this method is used to purify sea water. Process: In this purification system, steam is directly introduced into a chamber. Therefore, the concentrate is not pure but somewhat, at a given temperature and pressure, its configuration matches that of the fumes. Ultimately, simple purification is only operational when the boiling points of the fluid change significantly (25°C). In these circumstances, the vapor pressures of the constituents are necessarily different so that the concentrate can be sufficiently clean for its future. There are many types of distillation processes. Some of them are given below and are commonly used nowadays: 1- Fractional Distillation 2- Vacuum Distillation