1. Nitrate removal to <1 mg/L
2. Unique patented control system
3. Lowest capital and O&M
4. Eliminates upsets, gas bumps, and
high rate backwash cycling
5. Approved for water reuse under
California Title 22/Class 1A
1. Municipal wastewater treatment
2. Industrial nitrate mitigation
3. Existing treatment facilities
4. Blue PRO® installations for total
1. Bellefonte PA
2. Aztec NM
3. Military Base, Maryland
Why do you need a Blue Nite system? Because nitrate and total nitrogen limits are proliferating in updated discharge permits across the continent, and the Blue Nite system provides a modular, end-of-pipe solution that means you never need to worry about whether you can meet your nitrate levels again.
Implementing Blue Nite biological denitrification has been shown to:
- Reduce nitrates to <1 mg/L
- Accommodate high or fluctuating influent nitrate
- Work with alternative carbon sources, such as
glycerin and acetate
- Work simultaneously in the same vessel with Blue
PRO® reactive filtration for phosphorus removal
to provide total nutrient removal.
Design hydraulic loading rates to Blue Nite filters are dependent on heterotrophic respiration rates, influent nitrate levels, nitrate variability, dissolved oxygen (DO) levels, and expected range in water temperature. Loading rates can also be dictated by the NPDES permit or local regulatory agencies. Nexom's design parameters coupled with its proprietary control system optimizes system parameters to maintain a healthy, stable biomass for denitrification.
The nitrogen gas produced during operation is primarily released from the process as the media passes through the airlift. Removal of gas in this fashion has several benefits that include: eliminating false readings in headloss, eliminating the need to backwash because of gas entrainment, and eliminating the gas bump or upset gas "burps" due to significant nitrogen bubble accumulation typical in static bed filters.
The Blue Nite system is available in several models and configurations. The modular nature of the filters allows ease of system engineering and expansion. The filters are available as freestanding fiberglass or stainless steel tank units or can be configured in multi-module concrete cells. Control systems and smaller filters may be mounted on skid systems for mobility or ease of commissioning.
Since the same dosing and continuous-backwash mechanics enable Blue PRO® reactive filtration and Blue Nite’s attached growth biological denitrification, the two processes can take place simultaneously in the same tanks for total nutrient removal, with only the Blue Nite’s carbon-dosing system as additional required infrastructure while considering the biological kinetics.
Learn more about the Blue PRO process, or contact us to find out how this capability could impact your plant.