Years ago, when sewage was dumped into waterways, a natural process of purification began.
First, the sheer volume of clean water in the stream diluted wastes. Bacteria and other small organisms in the water consumed the sewage and other organic matter, turning it into new bacterial cells, carbon dioxide, and other products.
Today’s higher populations and greater volume of domestic and industrial wastewater require that communities give nature a helping hand, by means of a wastewater treatment plant (WWTP).
The Wastewater Treatment Division operates and maintains the City's three activated sludge treatment plants, measured in Gallons per Day (GPD). The WWTPs remove an average of 99.5% of contaminants from wastewater.
• Sabine WWTP – 300,000 GPD
• Main WWTP – 9,200,000 GPD
• Port Acres WWTP – 2,750,000 GPD
The basic function of wastewater treatment is to speed up the natural processes by which water is purified. There are two basic stages in the treatment of wastes, primary and secondary, which are outlined here.