Additional enhancements to the system can transform the system into a de-nitrification system. This is important in areas where nitrogen in wastewater can adversely affect drinking water supplies or the ecosystem of nearby waterways. The Singulair DN and Singulair TNT, are proven industry leaders in nitrogen reduction.
The Singulair is available in a lightweight High-Density Polypropylene (Green) or as a concrete tank (960). The Green is a 600 Gallon capacity model (accommodating up to 5-bedroom homes in most states) while the 960 comes in 600, 750, 1000, 1250, or 1500 Gallons per day units. Tanks can be used in parallel for even greater treatment capacities.