Municipal wastewater often contains nitrogen, typically in the form of ammonia, which is not removed through secondary treatment. Ammonia in wastewater can raise BOD levels or promote excessive algae growth if discharged into lakes, rivers, or estuaries. Additionally, ammonia in effluent may be toxic to aquatic life.
Further biological treatment beyond secondary treatment involves nitrifying bacteria converting ammonia into non-toxic nitrate through nitrification, which reduces the ammonia toxicity in effluent.
However, excessive nitrate in effluent can also be problematic, as it serves as a nutrient that encourages algae overgrowth. The denitrification process addresses this by converting nitrate into nitrogen gas, which is safely released into the atmosphere without environmental harm.
Formula Nitro enhances the natural bacterial population in wastewater, boosting the removal of ammonia, nitrite, and nitrate for improved water quality.
| Flow Rate | Initial Dosage | Maintenance** |
|---|---|---|
| Up to 5,000 GPD | ½ quart per day for 2 days | 1 quart per week |
| Up to 50,000 GPD | 2 quarts* | 2 quarts per week |
| Up to 250,000 GPD | 1 gallon* | 1 quart per day |
| Up to 500,00 GPD | 1 ½ gallons* | 1 quart per day |
| Up to 1 MGD | 2 ½ gallons* | 1 quart per day |
| Up to 5 MGD | 2 gallons per MGD* | 1 quart per day |
| Up to 12 MGD | 2 gallons per MGD* | 2 quarts per MGD per day |
| Up to 100 MGDD | 2 gallons per MGD* | 1 gallon per MGD per day |
| Optimum | Minimum | |
|---|---|---|
| Influent pH | 7.0 | 5.0 |
| Dissolved oxygen, ppm | 2.0+ | 1.0+ |
| C/N/P ratio | 100/10/1 | 100/5/1 |
| Temperature | 30°C (86°F) | 10°C (50°F) |
| Toxic metals, ppm (E.g., hex., chromium) |
0 | 0 |