The KLa Difference:
Technology, Experience, Knowledge, and Service

Since 2001, KLa Systems has supplied innovative jet aeration and jet mixing systems for industry, water utilities, and municipalities around the world.

KLa Systems has the most experienced team of oxygen transfer professionals in the industry and over the past 30 years, our team has successfully completed more than 1,300 jet aeration/mixing projects in 32 different countries.

Our mission is to develop our products by embracing modern treatment technologies, improving manufacturing efficiency, and reducing our system's carbon footprint.

Brewery Reuses Water For Factory Wash-Down   KLa Slot Injector™ Aeration System Expands The Capacity Of An SBR At A Landfill Leachate Treatment Facility   KLa Slot Injector Aeration System For CFAS Process Touch Panel Manufacturing Plant Wastewater Treatment
Brewery Reuses Water For Factory Wash-Down   KLa Slot Injector™ Aeration System Expands The Capacity Of An SBR At A Landfill Leachate Treatment Facility   KLa Slot Injector Aeration System For CFAS Process Touch Panel Manufacturing Plant Wastewater Treatment



Kynar PVDF Jet Aerator For Improved Wear Resistance Kynar PVDF Jet Aerator For Improved Wear Resistance

Ten years ago, KLa Systems was presented with the challenge of finding a more wear-resistant material for our jet aeration nozzles.  The inner nozzle is the liquid propulsion nozzle of the jet aerator and continuously sees high volumes of motive liquid flow at velocities ranging from 33-46 ft/s.  Traditionally, these inner jet nozzles were made from the same FRP material as the outer jet with the industry accepted corrosion/abrasion liner made up of C-Glass/Nexus and Silicon Carbide impregnated into the vinylester resin.  For many years this material had held up in most industrial and municipal bioprocesses with no adverse deterioration or wear.

KLa Systems Slot Injector Aeration System KLa Systems Slot Injector Aeration System

The Slot Injector™ System is a superior jet aeration system that is specifically applied to industrial biological treatment processes where fine screening is a standard pretreatment operation in both conventional and advanced air activated sludge applications.

KLa Systems Jet Aerator KLa Systems Jet Aerator

The high-alpha factor and clean water oxygen transfer performance of KLa’s jet aeration technology results in low energy costs and reduced off-gas volume for industrial and biosolids applications.

KLa Systems Jet Mixer KLa Systems Jet Mixer

Jet Mixers offer superior mixing of large diameter tanks by providing uniform energy distribution while minimizing power input. This mixing technology results in decreased reaction times, improved liquid blending and off bottom suspension of light, organic solids.  Jet mixers are used in wastewater treatment applications where blending, solids suspension, flow generation, or chemical reactions are key process parameters.  Jet mixers are fabricated of either FRP or stainless steel with no moving parts in the tank. Conventional pumps are used for the jet motive flow and are located just outside the tank for optimizing energy efficiency and ease in maintenance.

KLa Systems Floating Effluent Decanters KLa Systems Floating Effluent Decanters

KLa Systems floating effluent decanters are used to draw clarified liquid from near the liquid surface of sequencing batch reactors and aerobic digesters.

KLa Systems Complete Systems KLa Systems Complete Systems

A typical system consists of the Slot Injector™ aerators, jet mixers or jet aerators complete with in-basin piping system, back-flush system, liquid recirculation pumps, and air blowers.  The pumps supplied are either end suction centrifugal, submersible, or self-priming. Low pressure air is delivered by positive displacement blowers, screw compressors, multi-stage or high speed centrifugal blowers.


KLa Systems Inc. is an equipment supplier specializing in custom designed mixing and aeration technologies for biological wastewater treatment processes. We are the market leader and our team of personnel has over 30 years’ experience in the water industry, having successfully completed well over 1,300 projects worldwide.

Our focus is in working with large industries, municipalities, and water utilities on a global basis and our products include jet mixing, jet aeration, and Slot Injector™ aeration systems. KLa Systems goal is to furnish the most cost effective system in the industry, while applying our technology to both conventional and advanced biological treatment processes for the purpose of both creating a cleaner environment while assisting our customers in making their treatment plants more sustainable.

Click Here To Download Videos:
Video: Bi-Directional Jet Aerator - Mixing Pattern
Video: Directional Slot Injector Mixing Pattern
Video: Jet Aerator - Starting Up
Video: Jet Mixer - Start Up
Video: MBBR Slot Injector

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KLa Systems

31 Mill Street. PO Box 940

Assonet, MA 02702-0896


Phone: 508-644-5555

Fax: 508-644-5550

Contact: Fred Siino


  • Going Bold To Shine A Spotlight On Stormwater Pollution
    Going Bold To Shine A Spotlight On Stormwater Pollution

    Too many dog owners think their pets’ waste easily breaks down in nature and is helpful to plants, so they leave it on the ground. The truth is that dog poo and other pet waste is loaded with germs such as e. coli and giardia that make people sick as well as nutrients that can fuel problematic algae blooms.

  • Location, Location — The Key To Aeration
    Location, Location — The Key To Aeration

    As with any industrial process, the right tool for the job depends on the nature of the task at hand. In aerobic wastewater treatment, that optimal choice often comes down to a balance between the biological and financial demands of the application. Either way, here are several performance comparisons of how multiple aeration methods and locations stack up in industrial wastewater treatment applications.

  • A Lid For Every Pot: Retrofitting To Meet New Aeration Challenges
    A Lid For Every Pot: Retrofitting To Meet New Aeration Challenges

    Aeration for industrial and municipal wastewater treatment involves more than simply moving volumes of air through a treatment basin. It really comes down to creating and sustaining an optimal oxygenated environment for microorganisms to convert oxygen consuming compounds into CO2 and water. Here are some key considerations for making better retrofit decisions about upgrading existing basin capacity and efficiency with jet aeration.

  • Aeration Considerations: What To Know Before You Buy
    Aeration Considerations: What To Know Before You Buy

    Unlike most municipal wastewater treatment plant (WWTP) applications, industrial wastewater can vary widely from one application to another, even within the same plant, depending on the process being run. Industrial wastewater professionals — especially those facing specific challenges or planned volume increases — can benefit from comparing key points of differentiation in jet aeration system options before making any upgrade.

  • Water Presents An Alternative Solution To Alternative Energy Storage
    Water Presents An Alternative Solution To Alternative Energy Storage

    Looking for a way to store massive amounts of excess green energy? Water may provide the answer.

  • Translating Aeration Efficiency Into Dollars
    Translating Aeration Efficiency Into Dollars

    The hardest aspects of comparing efficiencies among submerged aeration technologies are the many variables in capital expense (CAPEX), operating expense (OPEX), and complexity of wastewater makeup. Instead, consider comparing the physics of different aeration technologies and the relative costs associated with them. Here are five major categories for evaluating industrial wastewater aeration efficiency.

  • How Lost Shipping Containers Factor Into The Global Ocean Pollution Problem
    How Lost Shipping Containers Factor Into The Global Ocean Pollution Problem

    It took decades to solve the mystery of Garfield phones that were polluting French beaches. Turns out a load of the novelty item, modeled after the popular orange cartoon character, was slowly being purged from a shipping container that had been lost at sea. That begs the question: Are shipping containers like these polluting global waterways at alarming rates?

  • New York Launches Campaign To Fight Pipe-Jamming Fatbergs

    Long thought to be an issue that plagued the United Kingdom most acutely, the scourge of fatbergs has been making itself known stateside.

  • Austin Traces Root Of Drinking Water Odor To Zebra Mussel Infestation

    An unusual culprit has been identified as the source behind rotten smelling water in Austin, Texas. Though the source of the smell was surprising, at least it wasn’t too difficult to deal with.

  • Flint Returns To Machine Learning Solution For Lead Line Replacement

    The fallout from Flint, Michigan’s lead-contaminated drinking water has been far-flung and long-lasting.

  • Wastewater Service Charges Continue To Rise

    Wastewater service charges vary considerably across EPA regions and States. That’s one of the key findings from the National Association of Clean Water Agencies’ (NACWA) Cost of Clean Water Index. If you live in Montana, Wyoming or the Dakotas (EPA Region 8), your average service charge of $261 a year is considerably less than the $884 your fellow Americans up in New England (EPA Region 1) are paying.  As you can imagine, much of the difference is to do with population size and geography.

  • How The EPA Reacts To A Government Shutdown

    Did you know that the Environmental Protection Agency (EPA) had a published Contingency Plan in anticipation of the current government shutdown? I guess in hindsight, you would have expected it for an agency with 134 facilities dotted across the country. And in fact, it’s required by the Office of Management and Budget (OMB) under Circular A-11, Section 124 that all government agencies have plans for an orderly shutdown “in the event of an absence of appropriations.”

  • Climate Change Report Identifies Myriad Needs For Water Industry

    The federal government recently released its fourth National Climate Assessment which focuses on the impact climate change will have on the U.S. economy over the next century. As mandated by the Global Change Research Act of 1990, the U.S. Global Change Research Program takes a comprehensive look at climate change and its effects on the natural environment, agriculture, energy production and use, land and water resources, transportation, human health and welfare, human social systems and biological diversity.

  • Groundwater Scarcer Than Previously Thought

    According to the U.S. Geological Survey, groundwater supplies half of all drinking water to the U.S. population, nearly all of it to our rural population and over 50 billion gallons per day for agricultural needs. But according to new research out of UC Santa Barbara, supplies may be more limited than previously thought.

  • Ridding The Oceans Of Plastic By 2040

    Last month, The Ocean Cleanup launched its first plastics cleanup system (System 001) in an area of the Pacific between Hawaii and California named the Great Pacific Garbage Patch. It constitutes the world’s largest accumulation zone, known as a gyre, of ocean plastics. Boyan Slat, CEO of The Ocean Cleanup, estimates that half of the Great Pacific Garbage Patch will be removed from the Ocean within five years as additional systems are applied until it achieves full-scale deployment.

  • Data Modeling Helps Detroit Avoid $500M CSO Infrastructure Investment

    Five years ago, the city of Detroit, MI, filed the largest municipal bankruptcy in U.S. history at an estimated $18 to 20B. At the time, there was a lot of speculation in the water market as to how the city would continue to serve its citizens with viable water and sanitary sewer services. Ultimately Detroit reached a deal with neighboring Oakland, Wayne, and Macomb counties to create the Great Lakes Water Authority (GLWA), a new regional water and sewer authority. Spring forward to today and despite Detroit’s population continuing to dwindle, it’s water and sewer provision under the GLWA has recovered significantly.

  • Modern Invention Pulls Water Out Of Thin Air
    Modern Invention Pulls Water Out Of Thin Air

    When you think about areas of the world where people have limited access to clean water, I’m guessing hot, sunny, arid climates come to mind. In an interesting twist, a couple of innovations are using those exact conditions to create potable water.

  • Contact Lens Becomes Latest Pollutant In Wastewater

    The latest disposable causing a stir in the wastewater treatment world is the contact lens. Researchers from Arizona State University recently presented their findings at an American Chemical Society event showing that contact lenses flushed down the toilet or washed down the drain can pass through wastewater treatment plants and accumulate in sewage sludge. As sludge is often applied on land for disposal and fertilizing, macro- and microplastics from lenses enter terrestrial ecosystems.

  • Tackling Nonpoint Source Nutrient Pollution

    Recently, Ohio Governor John Kasich issued an executive order allowing the Ohio Department of Agriculture to set requirements for storing, handling and applying manure as well as nutrient management plans in an effort to reduce nutrient pollution and algal bloom growth in Lake Erie. The order is set to affect 7,000 farms across 2 million acres.

  • Red Tide Algal Bloom Hits Florida Beaches

    The annual Lake Erie harmful algal bloom forecast was recently released by the National Oceanic and Atmospheric Administration (NOAA), predicting that western Lake Erie will experience a harmful algal bloom (HAB) of cyanobacteria this summer. The bloom is expected to be smaller than in 2017 but larger than the bloom in 2016.

  • Sniffer Dogs Now Being Used To Detect Water Main Leaks
    Sniffer Dogs Now Being Used To Detect Water Main Leaks

    Sniffer dogs have been used for a while in the oil and gas industry to find leaks. But recently, dogs have begun to be used to find leaks in water mains.

  • Billions Of Gallons Of Treated Water Irrigates U.S. Lawns

    For most of the United States, we’ve reached the time of year where Americans desire to maintain a perfectly green lawn starts to be tested by the warmer and dryer summer months. From the water industry’s perspective, it’s staggering just how many billions of gallons of treated water ends up being sprayed across our hallowed front and back yards in maintaining a full and aesthetically-pleasing lawn.

  • Start-Up And Operating Tips For Jet Aeration Systems
    Start-Up And Operating Tips For Jet Aeration Systems

    Jet aeration systems are extremely efficient due to their high alpha factor and clean water oxygen transfer performance. Proper start-up, operation, and maintenance will ensure reliable service and a long life.

  • Energy Savings With Jet Aeration: The Devil Is In The Details
    Energy Savings With Jet Aeration: The Devil Is In The Details

    Conserving energy and saving costs are always on the minds of wastewater professionals. Aeration accounts for more than 50 percent of electrical usage at most treatment plants. Improved aeration efficiency will always work toward the goals of saving energy and reducing operating costs.

  • How To Boost Industrial Plant Capacity By Retrofitting Aeration Tanks
    How To Boost Industrial Plant Capacity By Retrofitting Aeration Tanks

    As industries expand, they typically need to increase the capacity of their wastewater treatment facilities. Increasingly stringent regulatory requirements, such as lower nitrogen limits, may also signal the need to boost treatment capacity. Installing additional tanks and larger equipment not only adds capital costs but increases operating costs as well.

  • PFAS Contamination Continues To Be An Issue Of Concern

    A couple of weeks ago, Environmental Protection Agency (EPA) administrator Scott Pruitt called PFAS groundwater contamination “a national priority” and pledged action at an EPA national PFAS leadership summit.

  • New York City Sludge Stalls In Alabama

    Writing for Mental Floss in 2015, Emily Becker finished her article on the twenty-year export of New York City’s wastewater sludge to Colorado with the words “there are no plans for the New York City poop train to leave the station again.” Fast forward to 2018 and the wheels are once again rolling.

  • Say No To The Straw

    It is almost too heart-breaking to watch. In the YouTube video, marine biologists from Texas A&M University extract a plastic straw from a sea turtles’ nose as the creature winces in pain. Today that video has been viewed more than 22 million times, drawing attention to the hazard that plastic straws present to animals and our environment.

  • Treatment Facilities Celebrate World Water Day

    Saturday, March 24th was a busy day at the Brightwater Clean-Water Treatment Facility in Woodinville, WA, just outside Seattle. The Utility’s Education and Community Center was full of family-oriented science experiments and art projects with organized tours of the wastewater treatment plant taking place throughout the day. All in recognition of International World Water Day which had occurred two days before.

  • Naegleria Fowleri And The Hot Spring

    For many people, hot springs conjure up thoughts of cleansing and purity. For centuries, humans have visited hot springs to relax and recover. But as with any natural water body, hot springs can also exhibit biota that can infect and in severe cases kill.

  • Acing The Alpha Factor In Aeration
    Acing The Alpha Factor In Aeration

    Aeration is the heart of every activated sludge system, as well as the most energy-intensive process. When designing or modifying a wastewater treatment facility, the aeration system design will have lasting impacts on effectiveness, capital and operating costs.

  • Gulf Of Mexico’s Hypoxic Zone Larger Than Ever
    Gulf Of Mexico’s Hypoxic Zone Larger Than Ever

    Last year, the National Oceanic and Atmospheric Administration (NOAA) recorded the largest hypoxic zone in the Gulf of Mexico since monitoring began 32 years ago. Hypoxic waters, often referred to as dead zones, have dissolved oxygen concentrations of less than 2-3 ppm. They are caused by eutrophication or excess nutrients that promote algal growth in water bodies. As algae decompose, they consume oxygen creating dead zones.

  • Water Industry World Records

    You may have read recently that Orange County Water District (OCWD) and Orange County Sanitation District (OCSD) set a Guinness World Record for the most wastewater recycled to drinking water in 24 hours. The record attempt kicked off on February 15th 2018 to mark the 10th anniversary since the districts’ Groundwater Replenishment System was launched and culminated with more than 100 million gallons per day (MGD) being produced.

  • Jet Aeration Systems: A Tool For Improved SBR Operation
    Jet Aeration Systems: A Tool For Improved SBR Operation

    Sequencing Batch Reactors (SBRs) are a variation of the activated sludge process that combine treatment steps into a single basin. Based on a fill-and-draw method, major phases of the SBR process include a cycle of fill (with or without aeration), react, settle, decant, and idle. Today, successful flow control strategies have made SBRs state-of-the-art technology. SBRs are commonly used today and are especially beneficial for many industrial applications.

  • DC Water’s Unconventional Approach To Utility Management

    Over the past 10 years, DC Water has become the harbinger of the modern water utility. It’s often unconventional approach to tackling age-old problems usually elicits one of two responses from other utility professionals. The first response is one of resignation — if only I had the budget that size permits, I’d be able to do similar things. And the second is one of awe — there’s no way I have the amount of gumption to convince regulators or customers that I have a better way.

  • What Happens To The Chesapeake Bay Now?

    One of the great turnaround stories in the history of our nation’s water bodies is that of the Chesapeake Bay. Since 1976 when the Environmental Protection Agency (U.S. EPA) first undertook a comprehensive study of the Bay, efforts to address excessive nitrogen and phosphorous degradation of water quality have steadily improved the Bay’s complex ecosystem.

  • Does Public Outreach Help Or Hinder Acceptance Of Recycled Wastewater As A Drinking Water Source?

    When California’s AB2022 went into effect earlier this year, allowing the bottling of advanced purified reused water for educational purposes, Orange County Water District (OCWD) and Orange County Sanitation District began the #GetOverIt! campaign to continue to push for consumer acceptance of recycled water systems.

  • Water Is One Of The Few Issues To Unite Voters

    Unless you spent the last election cycle hiding under a rock (and no blame if you did), you are no doubt aware of the growing rift between the two major political parties of the United States. As reported in The Atlantic citing polling from the Pew Research Center for the People and the Press, those who identify as Democrats are becoming more liberal and those identifying as Republicans swing ever more conservative.

  • Americans’ Attitude To Their Water Changes With The Weather

    Weather plays an important role in how Americans think about water. And I don’t mean when it’s raining, we decide to grab a raincoat.

  • In River Pools Offer City Residents Swimming Alternatives

    It wasn’t so long ago that city rivers were some of the more polluted bodies of water on the planet. In 1969 for example, the Cuyahoga River famously caught fire after years of unabated pollution, spurring an environmental movement to clean up the nation’s waterways.

  • Water Intense Meat Production Processes Will Have To Change

    A few years back, the Secretary of the International Farm Management Association (IFMA) announced that if the world’s population consumed food in the same manner as the citizens of the U.S., we would need 6 planet earths to keep up with demand. Now we know that the traditional diet of hamburgers, steaks and all-you-can-eat buffets across America’s heartland is slowly being diversified by a growing number of eating options, many far greener, i.e. Salad Works. 

  • How To Optimize Aeration At MBR Plants
    How To Optimize Aeration At MBR Plants

    Membrane bioreactor (MBR) plants are found all around the world, serving as a go-to method for treating wastewater through a combination of processes. But as this technology gains popularity, operations must contend with the inherent aeration problems it presents.

  • Tackling Combined Sewage Overflows (CSOs) In New York

    New York City treats 1.3 billion gallons of wastewater a day across its 14 wastewater treatment plants. The city has seen a precipitous drop in fecal coliforms, with the NYC Department of Environmental Protection (DEP) reporting that fecal coliforms per 100 mL of water has fallen from 1,000 in 1972 when the Clean Water Act was passed to closer to 10 as of 2009.

  • Do You Pay 300 Times What You Could For Water?

    On January 1st 2017, Philadelphia’s controversial “soda tax” went into effect, adding a 1.5-cents-per-ounce on sugary beverages sold in the city. Several cities across the U.S. have enacted similar taxes in a bid to battle diet-related diseases such as obesity and fund more healthy activities within their communities.

  • Green City, Clean Waters Plan Puts Quality First In Philly

    Cities all over the country have been prioritizing clean water through a variety of different programs and the City of Brotherly Love is among the ranks.

  • As Waters Warm, Questions Swirl Around Health Of The Great Barrier Reef

    The Great Barrier Reef — a chain of 2,900 individual, underwater corals comprising the world’s biggest structure made by living organisms — is one of the most visible victims of climate change.

  • Over Decades, Merrimack River Transforms

    The Merrimack River is considered one of the major beneficiaries of the Clean Water Act of 1972.

  • Beach Cleanups Energize People Around The Globe

    With sandal-and-swimsuit season right around the corner, policymakers are raising awareness about the problem of beach pollution.

  • Water Concerns Unite Polarized Voters

    In a nation of red states and blue states, water policy is an issue that often dissolves party lines.

  • Boston Harbor Overhaul: A Water Cleanup Success Story

    Boston Harbor used to be an icon of water pollution in the U.S. But a massive cleanup effort — one of the biggest restoration feats in the nation’s history — has revived the harbor in the last three decades.