Sewage treatment plants (STP) play an important part in a civilized society. Since people do not comprehend the complexity of designing, commissioning and running of a sewage treatment plant, it is regularly misinterpreted and neglected by many.

A sewage treatment plant make sure that the treated water does not pollute the environment. It is a continuous process, the function is exceptionally crucial since of the volume of wastewater that enters the sewage treatment plants that needs to be processed is massive. The main purpose of having a Sewage Treatment Plant is to remove contaminants or pollutants from the sewage water.

Nevertheless, sewage treatment plants have a great deal of essential functions. Sewage treatment plants are also referred to as home wastewater treatment plants. The process in sewage treatment plants would be to tidy up and deal with the sewage that comes from home and business functions. The treatment of wastewater is extremely essential so it won’t contaminate the environment nor do harm by spreading illnesses which will be health danger to individuals. The sewage treatment plants typically do not consist of wastes that originate from greatly pollutant sources such as manufacturing plants which release large dose of chemical waste items. Industrial plants have their own built-in wastewater treatment systems in their area.

A typical sewage treatment plant is composed of 3 phases: the primary stage, the secondary stage and the tertiary stage. Primary treatment is a stage where heavy solids are allowed to settle to the bottom of a holding tank. In this stage,  oil, grease and lighter solids float and are removed. Solids such as rocks and grits are strained and raked out in order to avoid the damage of the equipment in the subsequent process stages. In the secondary stage, dissolved solids and suspended biological matter are removed. At the tertiary treatment, where the last treatment will occur, the primary goal is to make the water as clean as it can be prior to it is released to the natural environment. The treatments are likewise utilized to get rid of the nitrogen and phosphorous material of the liquid.

The sludge or the strong wastes that are left from the treatment of wastewater is dealt separately and differently as compared with the liquid wastes. The treatment of sludge is yet another crucial function of the sewage plants. This is generally done through the procedure of anaerobic and aerobic procedures that uses germs for treatment. Another method is using composting to break down the biological contaminants of the wastes.The water that comes out of the sewage treatment plants are free from pollutants that has a level of acceptability when released to the environment particularly to the bodies of water. The water can likewise be used for irrigation purposes.