Top 5 Air Pollution Control System Suppliers in the United States [2025]

1. EcoClean Systems – Pioneers in Lithium Battery Recycling Solutions

Founded in 2008 in Portland, Oregon, EcoClean Systems has built its reputation by zeroing in on one of the fastest-growing industrial segments: lithium-ion battery recycling. As EVs and consumer electronics flood the market, recycling plants are popping up nationwide, each processing 500 kg to 2,500 kg of batteries hourly. The problem? Shredding and separating lithium batteries releases volatile organic compounds (VOCs) and fine particulates. EcoClean’s answer? A specialized air pollution control system for li battery recycling plants that doesn’t just meet EPA standards—it redefines them.

What sets EcoClean apart is its hybrid filtration technology. Their systems combine high-efficiency particulate air (HEPA) filters with activated carbon beds to trap 99.97% of particles as small as 0.3 microns, while neutralizing gases like hydrogen fluoride. But it’s the smart monitoring that really wows clients. Each system comes with real-time sensors and a cloud-based dashboard, letting plant managers adjust airflow or filter replacement schedules on the fly. “We used to struggle with unexpected emissions spikes during peak hours,” says Maria Gonzalez, operations director at a Nevada-based lithium recycling plant. “EcoClean’s system alerts us before issues arise, cutting downtime by 30%.”

Beyond lithium, EcoClean has expanded into配套 equipment (auxiliary equipment) like dust collectors for plastic pneumatic conveying systems, ensuring every step of the recycling process—from battery breaking to plastic pellet transport—stays emission-free. With clients including major players like Redwood Materials and Li-Cycle, they’re proving that targeted expertise beats one-size-fits-all solutions.

“EcoClean didn’t just sell us a system—they engineered a solution that grows with our plant. When we scaled from 800 kg/h to 2,000 kg/h, their team retrofitted our existing setup instead of pushing a full replacement. That’s partnership, not just supply.” — James Harper, Plant Manager, West Coast Battery Recyclers

2. AirPure Technologies – Masters of Electronic Waste (E-Waste) Control

If EcoClean dominates lithium, AirPure Technologies rules the e-waste realm. Since 2012, this Chicago-based firm has focused on the messy, multi-step process of recycling circuit boards, cables, and CRT monitors—applications where pollutants range from leaded dust to brominated flame retardants. Their claim to fame? The air pollution control system for circuit board recycling plants, designed to handle the high-heat, high-dust environments of dry and wet separation processes.

Take their flagship model, the AP-2000 Dry Separator System, built for plants processing 500 to 2,000 kg of circuit boards hourly. It uses a three-stage filtration process: first, a cyclonic separator to catch large debris (like shattered glass from CRTs), then a baghouse filter for fine dust, and finally a plasma reactor to break down toxic gases. For wet processes—where water-based separation can release aerosols—they add mist eliminators and UV light modules to neutralize pathogens and odors.

AirPure’s secret weapon? Customization. “No two e-waste plants are the same,” explains CEO Raj Patel. “A facility recycling scrap cables needs different airflow than one shredding refrigerators. We start with a site audit, map out emission hotspots, and design systems that fit like a glove.” This approach has won them contracts with the EPA’s e-Stewards program and major recyclers like Electronic Recyclers International.

“We run a mixed e-waste plant—cables, circuit boards, even old refrigerators. AirPure’s system handles it all. Last year, our OSHA inspections were a breeze because their real-time data logs proved we were consistently below exposure limits.” — Tina Reeves, Safety Officer, Midwest E-Cycle

3. GreenGuard Solutions – Innovators in Metal Melting and Foundry Systems

For heavy-duty operations like metal melting furnaces and lead acid battery recycling, GreenGuard Solutions in Cleveland, Ohio, is the go-to. Since 2005, they’ve specialized in high-temperature air pollution control, where gases like sulfur dioxide (from lead paste reduction) and metal oxides (from aluminum melting) demand rugged, heat-resistant systems.

Their star product? The GreenGuard Rotary Furnace Scrubber, designed for rotary furnace for paste reduction in lead acid battery recycling plants. Unlike standard scrubbers that clog with lead dust, GreenGuard’s uses a ceramic-lined chamber and recirculating alkaline solution to dissolve sulfur dioxide while trapping lead particles. The result? 98% removal efficiency for SO2 and 99% for lead particulates, well below the EPA’s 0.15 mg/m³ limit.

But GreenGuard doesn’t stop at furnaces. They also excel in air pollution control machines for metal powder briquetting—like the portable briquette presses used to compact metal shavings. These machines release fine metal dust, which GreenGuard’s compact dust collectors (some as small as a filing cabinet) capture with HEPA filters, keeping workbenches clean and workers safe. “We used to have to shut down the shop weekly to clean dust buildup,” says Mike Torres, owner of a metal fabrication shop in Detroit. “GreenGuard’s collectors cut that to once a quarter.”

What clients love most? Durability. “Our systems are built to last 15+ years in harsh environments,” says GreenGuard’s technical director, Lisa Wong. “We use corrosion-resistant alloys and replaceable parts, so maintenance is cheap and easy.” It’s no wonder they’re a staple in foundries and lead recycling plants across the Rust Belt.

4. EnviroShield Inc. – The All-in-One Solution Provider

Not every recycler wants to piece together a pollution control setup from multiple vendors. Enter EnviroShield Inc., a Boston-based supplier founded in 2015 that prides itself on “turnkey systems.” Whether you’re recycling refrigerators, shredding scrap cables, or extracting lithium from tailing ores, EnviroShield delivers a fully integrated air pollution control system —from design to installation to ongoing maintenance.

Their most popular package? The EnviroShield 360, tailored for multi-material recycling plants. It includes everything: dust collectors for shredders, acid gas scrubbers for battery breaking lines, activated carbon units for VOCs, and even noise dampeners (a bonus for plants near residential areas). For example, a Florida-based facility recycling refrigerators and AC units uses EnviroShield’s system to handle both refrigerant extraction fumes and foam insulation dust in one seamless setup.

EnviroShield’s edge is their “EcoSuite” software, which ties all components together. Operators can monitor filter status, energy usage, and emission levels from a single screen, and the system even auto-generates compliance reports for the EPA. “We used to have three different dashboards for our dust, gas, and noise controls,” says Sarah Kim, sustainability manager at a national recycling chain. “EnviroShield simplified it, saving us 10+ hours a week on reporting.”

“When we expanded into CRT recycling, we thought we’d need a whole new pollution system. EnviroShield added a CRT-specific module to our existing setup—no rip-and-ｒｅｐｌａｃｅ, just seamless integration. Their team even trained our staff on the new controls.” — Kevin Doyle, Operations Manager, National Scrap Recyclers Association member

5. CleanAir Dynamics – Leaders in Portable and Compact Systems

Not all industrial operations have the space for massive, fixed pollution control setups. That’s where CleanAir Dynamics, based in Austin, Texas, shines. Since 2010, they’ve specialized in portable briquetting machine dust collectors and compact air purifiers, perfect for small shops, job sites, or facilities with limited floor space.

Their bestseller? The CleanAir Mini-Pac, a wheeled unit the size of a small filing cabinet that pairs with portable metal powder compressors (like the PHBM-002 to PHBM-004 models). It uses a HEPA filter and activated carbon cartridge to capture 99.9% of metal dust, making it ideal for metalworkers who need to move their briquetting press around the shop. “We do on-site metal recycling for construction sites, and space is always tight,” says Jake Wilson, owner of a mobile recycling service in Texas. “The Mini-Pac rolls right next to the press—no hoses snaking across the floor, no bulky equipment to haul.”

But CleanAir isn’t just about portability. They also excel in air pollution control system equipment for small-scale battery recycling—like the CleanAir Micro, designed for startups processing 100 to 500 kg of lead acid batteries daily. It combines a small cyclone separator with a UV-C light module to kill mold and bacteria in exhaust air, all for a fraction of the cost of industrial-scale systems. “We wanted to start recycling batteries but couldn’t afford a $100k control system,” says Elena Gomez, founder of a California-based e-waste startup. “CleanAir’s Micro let us launch legally and upgrade as we grew.”