Whether you’re removing nutrients, solids, focusing on reuse quality or discharge…

…our filtration process design engineers are able to meet your plant’s needs.

We use proven tools that we’ve taken to the next level to make them more energy-efficient, cost-effective, user-friendly–some may even enable your system to do things almost no other plant can.

Our applications engineers will be glad to guide you to the tools that solves your problem. They are some of the world’s leading minds on questions of tertiary polishing, California Title 22 water reuse, combined sewer overflow (CSO) treatment, and much more. Reach out, and you could be talking to one of them in short order!

We’ve got all your filtration needs covered

from A (Alum) to Z (Zinc).

Don’t know what you need? Our process design engineers are happy to help you diagnose your requirements and design a solution to fit your specific needs. Get your project moving forward today!

Solving Phosphorus is both easier, more important than ever.

If discharged to the environment, phosphorus contributes to downstream algae growth which chokes the life out of lakes, streams, even parts of oceans.

Compounding the issue, many wastewater treatment plants—with their focus on biological treatment—have historically struggled to remove phosphorus. After all, while other contaminants like ammonia or nitrates can be converted into the same nitrogen gas which makes up about 78% of the air around us, phosphorus doesn’t turn into a gas, and instead gets caught up in the phosphorus cycle.

However, removing phosphorus is easier than ever thanks to specific technological advances, and achieving even ultra-low phosphorus level, down to <0.02 mg/L, is as simple as reaching out to your nearby Nexom representative.

The most common ways to remove phosphorus from the water cycle is to bind it to a dosed metal salt like alum or ferric, allow the resulting phosphates to agglomerate into flocs and either settle or filter them out.

For sites with ultra-low phosphorus limits of 0.1 mg/L and below, there is one solution that is unmatched in its efficiency and ease of operation.

As Total Phosphorus approaches those microgram-per-liter levels, it becomes impractical to have the phosphates collide with chemical and bind into flocs; there just aren’t enough phosphates (or chemicals)! Blue PRO^® reactive filtration avoids that problem by putting a hydrous metal oxide coating (often Al, Fe, or Ce) on the media in an industry-tested, simple, and operator-friendly Centra-flo^® sand filter. By flowing the phosphorus-laden water through the reactant-coated sand, the phosphorus binds directly on the sand and stays trapped there until it is scoured away by the filter’s built-in continuous backwash system. No floc-forming necessary!

Turning Ammonia into nitrates is only half the battle.

Total Nitrogen can have devastating consequences, but with the right tool you can make your nutrient problem disappear into thin air.

Nitrogen, like phosphorus, is one of the building blocks of life on earth, and is considered a nutrient in wastewater that can feed algae growth and has led to some pretty disastrous consequences (see, for instance, the Gulf of Mexico’s dead zone).

Wastewater treatment plants have historically been effective at removing ammonia from wastewater through a process called nitrification, in which bacteria in wastewater converts ammonia to nitrates.

But as the danger of nitrates has become better understood, converting nitrates to nitrogen gas (and thereby eliminating this portion of Total Nitrogen from the wastewater completely) has become a focus for many regulators.

Fortunately, Nexom’s biological treatment experts can help your plant become a nitrate and Total Nitrogen-removing plant as well.

This process, known as denitrification, involves many of the same types of bacteria that remove BOD, but instead of supplying dissolved oxygen to that bacteria, the denitrifying process starves the oxygen out of the water so the bacteria essentially steals it from the nitrates, turning that NO_x (nitrites and nitrates) into N₂ (nitrogen gas).

There are a number of ways to accomplish this, and your local Nexom representative can get you on the path to identifying which one will best serve you based on your lagoons, your Total Nitrogen limits, influent characteristics, and more.

Don’t lose it, reuse it.

Reusing wastewater for irrigation and aquifer-recharging addresses water shortages, particularly in arid or semi-arid regions with little access to freshwater sources.

Especially in North America, California Title 22 regulations are seen as the standard for water reuse, particularly as it relates to disinfection and turbidity.

Turbidity measures the clarity of water—which is determined by how many and what type of solids are suspended in it—using units known as NTU (Nephelometric Turbidity Units). California Title 22 regulates that, to be eligible for reuse, wastewater treatment plant effluent must meet a limit of 2 NTU.

Nexom has a range of approved filtration options to equip a wastewater treatment plant to achieve this high standard.

At Camp Verde, Arizona, for example, engineers opted for the MITA® Cloth Disk Filter to enable this small town to reuse wastewater and provide their future sluggers and southpaws a place to play.

For reuse compliance, with the minimum capital expenditure, most engineers will choose cloth disk filtration.

However, depending on your plant’s needs, our process design engineers may recommend the Centra-flo® continuous-backwash upflow sand filter. Centra-flo is the platform on which our Blue Pro reactive filtration or Blue Nite biological denitrification are built, setting you up to achieve ultra-low phosphorus, nitrate or metals levels now or in the future.

Finding the right filter for you

starts with getting you the information you need.

We’d love to offer you a glimpse at how we customize our filtration approach to you and your treatment facility. Find the group that most closely matches you, or reach out so we can help you move your project forward today!

Municipal treatment plants are our nation’s primary defense against harmful contaminants.

We’re here to make that big job a little easier.

Providing your residents and local businesses with efficient, effective wastewater treatment doesn’t need to be a challenge.

No matter which solution you need, you can count on our filters to be:

• cost-effective to keep rates low,
• efficient to keep operating costs in check, and
• operator-friendly to keep your public works team happy.