STP expands to the Sewage treatment plant. We all are aware of the working of sewage treatment plants. But let us briefly understand the meaning of the STP and its working in brief.
The sewage treatment plant is the wastewater treatment plant whose main aim is to remove the contaminants and impurities from sewage to produce an effluent suitable for discharge in the environment. It removes the pollutants from the wastewater mainly produced by the houses and industries.
It essentially works in four stages. The four stages are as follows:
1. Preliminary phase
2. Primary treatment
3. Secondary treatment
4. Tertiary treatment
When these four stages are completed, there is another stage to treat the sewage sludge. So what is this sewage sludge? When the water is treated, some solid particles settle at the bottom of the tanks. In other words, STP sludge is the residue left at the bottom of tanks that result from the wastewater treatment plant. It is derived from various sources such as homes, industries, offices etc.
STP sludge contains a lot of bacteria, pathogens and viruses. But it also has various critical organic matters and nutrients such as nitrogen and phosphorus. Therefore, they can be used as fertilizers and soil improvers. After the sludge is adequately treated and is suitable for use, it is referred to as biosolids.
STP sludge can be used as fertilizer. As a result, it can considerably reduce the amount and use of chemical fertilizers on the land. In this way, it ensures the adequate growth of the plant, and the sludge does not get accumulated in the environment. Apart from it, sewage sludge also provides no metal pollution in society by its use since the metals present in the sewage sludge are in the very minimum quantity that is not considered harmful.
The sewage treatment plant sludge leads to lower production costs on agricultural lands and can replace synthetic fertilizers. It can also be used as an alternative fuel in clinker production. It is considered to be one of the most sustainable solutions for sludge waste management.
Therefore, we conclude that the sewage sludge can be utilized after being adequately treated to remove the bacteria and pathogens. The treated sludge is very much rich in nutrients and hence is beneficial.
If you are looking for the best Sewage treatment plant manufacturer that can treat the wastewater efficiently, check out Netsol’s Sewage treatment plants. Contact us to discuss your requirements.
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