How Long Have Wastewater Treatment Plants Been in Existent – (And Why)?
Exact Answer: Since 1800s Wastewater treatment plants help in reclaiming wasted water which becomes clean for irrigation. However, the reclaimed wastewater is said to contain more dissolved solids than the natural water. The solid residues which are obtained from wastewater treatment plant are known as biosolids. Biosolids are used as fertilizers since they are rich …