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Lagoon ammonia removal

NitrOx®

Cold-weather nitrification for wastewater lagoons. Triplepoint's patented NitrOx® Process is the most cost-effective way to meet low effluent ammonia limits, even in winter.

Send us your permit Download the brochure
Jump to Inside the reactor Site layout NitroHive media TN limits Case studies
Non-detectammonia effluent achievable
To −40°Fair temperature, reliable treatment
<1/20ththe size of a lagoon
½–⅔the cost of other lagoon ammonia technologies
72+NitrOx® installations

Inside the NitrOx Reactor

Cold-weather nitrification in a small footprint.

Select a component to zoom in and see what it does.

Cutaway of the NitrOx Reactor: an aeration zone with retrievable Ares aerators and a media zone with high surface area media under a floating insulated cover

The NitrOx Reactor, at a glance

Retrievable Ares Aeration® and NitroHive media under a floating insulated cover keep nitrifiers working in any weather. Select a component to see how.

Why NitrOx?

Lower cost. Year-round results.

Low capital costThe reactor has a small footprint and tucks into your existing site, requiring no additional land. Capital costs are ½ to ⅔ the cost of other lagoon ammonia technologies, and a fraction of the cost of a mechanical plant.
Low operating costEfficient Ares Aeration® mixes and oxygenates to fuel the nitrifying bacteria that remove ammonia.
Cold-weather readyNitroHive media cultivate and concentrate nitrifiers, 10–20 times more than a typical MBBR. A backup heater adds control in extreme conditions.
Engineered for your lagoonWe evaluate your influent data, compliance goals and infrastructure, then design a system to meet your effluent requirement.

Fits your existing site

Fast installation. Easy maintenance.

Select a component to zoom in and see what it does.

Winter lagoon site with aerated lagoon cells, a blower and controls building and a NitrOx Reactor

The NitrOx process

BOD removal in the lagoon, then a polishing cell, then the NitrOx Reactor before discharge. It all works with the lagoon you already have.

  1. BOD removal
  2. Polishing
  3. NitrOx
  4. Discharge

How NitrOx works

Smart media. Smart mixing. Smart control.

NitrOx® integrates with your lagoon to deliver stable, year-round nitrification, while keeping the lagoon's ease of operation.

Wastewater passes through the NitrOx Reactor, where oxygen, mixing and high surface area media create a dense colony of nitrifying bacteria. They convert toxic ammonia to nitrate to meet a low ammonia limit.

Every lagoon is unique, so every system starts with your influent data, compliance goals and infrastructure, and upgrades your existing lagoons at a fraction of the cost of a mechanical plant.

NitroHive high surface area media

NitroHive media · cold-weather ready

900 m²

of surface area per cubic meter of volume

NitroHive supercharges the growth of nitrifying bacteria: 10–20 times more nitrifiers than in a typical MBBR, for ammonia removal year round.

The NitrOx® playbook

Which limit are you solving?

Start with NitrOx® and add only what your permit requires. Triplepoint designs the process around your facility.

  1. Start withThis page NitrOx® Ammonia to non-detect Add NitrOx for reliable nitrification in any weather.
  2. Add anoxic + recirculation NitrOx®+R Moderate TN limit of 15 mg/L Add a front anoxic zone and recirculation to the NitrOx Reactor.
  3. Add NitrOx®+D Tight TN limit of 10 mg/L Add the +D denitrification reactor to achieve the lowest possible TN.
  4. Discharge

NitrOx in the field

Case studies.

All case studies →
Benton, Missouri lagoon
Benton, MO · Facultative lagoon

Meeting Missouri's low ammonia limits

A NitrOx upgrade allows this facultative lagoon system to meet Missouri's low ammonia limits.

Read the case study →
Norway, Iowa lagoon
Norway, IA · Rehab

Non-detect ammonia after a rehab

Triplepoint aeration and NitrOx result in single-digit BOD and TSS and non-detect ammonia levels.

Watch the story →
Hillcrest Manor, Missouri lagoon
Hillcrest Manor, MO · Subdivision

The most cost-effective ammonia solution

NitrOx was the most cost-effective ammonia solution for this small Missouri subdivision.

Watch the story →

Ammonia removal

Download the NitrOx® brochure.

Learn how small-footprint NitrOx works within existing infrastructure to cost-effectively meet low ammonia limits year round, no matter how cold it gets.

NitrOx brochure

Looking to rent?

Mobile NitrOx®: ammonia treatment on a trailer.

For a temporary treatment need, to get into compliance quickly, or for sites where construction isn't feasible.

Up to 75%of six months' rent credited toward a permanent system
Explore Mobile NitrOx® Call (800) 654-9307
We Say It, We Do It guarantee

Proven performance. Guaranteed results.

We say it. We do it.

We back every system with our Technology Performance Guarantee: if we say it will work, we make sure it does. From first design to final install, we stand behind our process, our products and our people.

NitrOx questions

Common questions.

Does NitrOx really work in winter?

Yes. NitrOx delivers reliable treatment down to −40°F air temperature. NitroHive media concentrate 10–20 times more nitrifiers than a typical MBBR, a floating insulated cover holds in heat, and a backup heater adds control in extreme conditions.

How much space does NitrOx need?

The NitrOx Reactor is less than 1/20th the size of a lagoon. It tucks into your existing site and requires no additional land.

How does the cost compare?

Because NitrOx leverages your existing infrastructure, capital costs are ½ to ⅔ the cost of other lagoon ammonia technologies, and a fraction of the cost of a mechanical plant.

What if we also have a total nitrogen limit?

Add a front anoxic zone and recirculation (NitrOx®+R) for a TN limit of 15 mg/L, or the NitrOx®+D denitrification reactor for a TN limit of 10 mg/L. See NitrOx®+D →

We need ammonia treatment now. Can we rent?

Yes. Mobile NitrOx® brings ammonia treatment on a trailer for temporary needs or fast compliance, with up to 75% of six months' rent credited toward a permanent system. Mobile NitrOx →

We're ready to help

Talk to a lagoon ammonia specialist.

Share your ammonia limit, flows and timeline. We'll follow up with options, no obligation.

(800) 654-9307 info@lagoons.com 12600 E. Arapahoe Rd. #100, Centennial, CO 80112