Municipal wastewater contains nitrogen that usually is not removed by secondary treatment. This nitrogen in the form of ammonia can increase the BOD or cause excessive algae growth if it is discharged into lakes, streams or estuary waters. This ammonia in the wastewater effluent may also be toxic to aquatic life.
Additional biological treatment can occur beyond the secondary stage when nitrifying bacteria in the wastewater convert ammonia to the non-toxic nitrate through nitrification. This process is often sufficient to remove the toxicity caused by the ammonia in the effluent.
Too much nitrate in the effluent can be a problem because it is also a nutrient. Excess nitrate in the water can contribute to an uncontrolled growth of algae. The denitrification process converts nitrate to nitrogen gas. The release of nitrogen into the atmosphere does not cause any environmental harm.
Formula Nitro reinforces the bacteria that are already in the wastewater and increases the removal of ammonia, nitrite and nitrate.
| 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 |
* Spread this initial dosage out over the course of 10 days.
* * Add as regularly as possible. If it is required to miss one day, add that day’s product with the next dosage.
Dosage rate will vary with flow rates, retention times and system variations.
Do not add to the treatment system at a location where toxic or otherwise adverse pH, dissolved oxygen or temperature conditions may exist at peak levels.
| 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 |
*Apply this amount in one dosage.
**Add as regularly as possible. If a day is missed, add that day’s product with the next dosage.
The rates above are for a typical, well maintained system.
See label and SDS for safety information.