Sewage Treatment Plant (STP) is one of the water treatment plant methods. STP works to remove physical, chemical, and biological contaminants from wastewater. The outcome of this treatment is safe water, which prevents our environment. The remains or semi-solid waste, collected from wastewater is called sewage sludge. This sewage sludge is again treated for final disposal.
Sewage Treatment Process:
The treatment takes place whether the sewage is situated or centralized. This STP involves a pre-treatment plant where objects like grit, fat, and grease, trash, limbs, trees, leaves, branches are removed for the downstream stages as this may lead or clogs or damage the pipelines. Other grits like sand, gravel, cinders, and other organic materials are also removed to maintain the velocity over the sewage settlement. This grit removal also helps to avoid heavy deposits in aeration tanks, aerobic digesters, pipelines channels, and so on.
Types of Sewage Plant Processes:
Sewage treatment plants are of two types. They both are meant to decide the level of contaminants and pollutants employed in any Sewage. Anaerobic and Aerobic are the two types of process that helps in the Sewage Treatment Plant.
a)- Anaerobic Sewage Treatment:
A partly decomposable waste in the sewage cause anaerobic bacteria in a tank that contains only oxygen not any air in it. This ultimately leads to the reduction of organic material and gets converted into Hydrogen Sulphide, methane, carbon dioxide, etc. This anaerobic sewage treatment is widely used to treat wastewater sludge and organic waste as it leads to a reduction of input material to a large extent. If the methane is produced in large, then it is mostly covered by residential and heating industries. The best example of this treatment is septic tanks. But the notable one is; only the sludge can produce methane. The amount of pollutants in any septic tanks accounts for 70%-75% of the foul smell. So, the effluents produced here are not discharged at any cause rather they are discharged into the aerobic layer of the soil to begin the below process.
b)- Aerobic Sewage Treatment:
After the discharge of the effluents on the aerobic soil, Aerobic sewage treatment begins. The bacteria present here to digest the pollutants here. Next, the aerobic bacteria colony should be established to provide air for the bacteria to breathe well. So, the air is supplied by using bio-zone that use impellers propelled by the pumps. This will disturb the surface of the liquid with air or by using submerged diffused aeration using blowers. It doesn’t require electricity to generate air for the bacteria. In this way, oxidation is achieved and digested to pollutants like carbon dioxide, nitrogen, and water. The bad odor and pollutant problems are cleared now. Now the effluent becomes non-polluting and it can be accounted for the discharge to a watercourse.
By now you must have realized that Sewage Treatment Plant specifically is a crucial part of any water facility that must be performed to prevent the fresh water from getting contaminated. If you are looking for a sewage treatment plant service provider, then we can be your best bet. Contact us today and get your quotes.