Every recycling plant has a quiet workhorse that rarely gets the credit it deserves. Whether the line processes used lead acid batteries, lithium-ion batteries, printed circuit boards, scrap cable, or scrap metal, the same question comes up again and again: what happens to the dust, fumes, and gases that the process creates? The answer sits inside the pollution control system, and choosing the right one can be the difference between a compliant, profitable operation and a plant that keeps running into trouble.
This article looks at who the leading pollution control equipment manufacturers are for the recycling sector, what separates the best from the rest, and how to pick a partner that understands your specific recycling stream.
Why recycling plants need dedicated pollution control
Recycling is often described as a green industry, but the processes themselves can release hazardous emissions if they are not managed properly. Different recycling streams produce very different pollutants:
- Lead acid battery recycling generates lead fumes, sulfur dioxide, and acid mist during breaking, separating, and smelting. Lead paste contains lead sulfate, which releases SO2 when heated.
- Lithium-ion battery recycling produces fine reactive dust, volatile organic compounds, and electrolyte gases that need to be absorbed and neutralized before release.
- Circuit board recycling releases heavy metal dust and fiberglass particles during shredding and separation.
- Cable and metal recycling creates fine copper and aluminum dust, plus fumes from melting furnaces.
Because the pollutant mix is so different from one sector to the next, the leading manufacturers in this field are the ones that design systems around the actual process, not just sell a generic filter unit.
What the leading pollution control equipment manufacturers have in common
The global air pollution control market is served by a mix of large diversified technology groups and specialized environmental engineering firms. The names that keep appearing at the top of supplier shortlists include:
- ANDRITZ (Austria) - a global technology group with a broad environmental solutions portfolio. In early 2025 it acquired LDX Solutions, a North American provider of emission reduction technologies, strengthening its clean air offering for industrial markets.
- Honeywell (USA) - a diversified industrial company offering integrated air quality and emissions control solutions, including electrostatic precipitators, baghouses, and thermal oxidizers for industrial applications.
- Siemens Energy (Germany) - known for catalytic oxidizers, selective catalytic reduction, and hybrid scrubber systems for demanding industrial processes.
- Thermax (India) - a long-established energy and environment company with strong wet scrubber and dry sorbent injection technology, widely used across Asia, the Middle East, and Africa.
- CECO Environmental (USA) - a specialist in industrial air quality control serving metal, chemical, and recycling-related industries.
- Babcock & Wilcox (USA) - a veteran supplier of environmental equipment including electrostatic precipitators, baghouses, and scrubbers for heavy industry.
These companies share a few traits: deep engineering resources, proven emission control technologies, and a global service network. What they do not always share is deep, hands-on experience inside a specific recycling process.
Recycling-specific expertise matters more than brand size
Here is the key point for anyone buying pollution control for a recycling plant: the emissions from a lead acid battery line, a lithium battery line, and a PCB line are completely different. A system that works perfectly for one process can struggle with another. That is why many recyclers prefer to work with manufacturers that build pollution control as part of complete recycling plants, rather than buying a standalone unit from a generalist.
A manufacturer that designs the crusher, the separator, and the air pollution control system as one integrated line can match the capture points to the actual dust and gas sources. This integration is where specialized recycling equipment makers add real value.
San Lan: pollution control built into the recycling plant
San Lan Technologies Co., Ltd, a manufacturer based in Jiangxi, China, has spent more than fifteen years building e-waste and battery recycling plants, and its pollution control line reflects that process-level experience. Instead of offering a generic filter, San Lan supplies systems matched to the specific emissions of each plant:
- Air pollution control system for rotary furnace and lead refinery kettle - purifies the gases from the rotary furnace, blast furnace, and refinery kettle inside a lead acid battery recycling plant, helping the plant meet environmental requirements.
- Air pollution control system for lithium battery recycling plants - absorbs and neutralizes the harmful gases produced during lithium battery crushing and separation before they reach the atmosphere.
- De-sulfurization unit - removes sulfur from the lead sulfate in lead paste, which lowers the melting temperature, cuts SO2 emission, and saves energy and additives during smelting.
- Filter press and water treatment plant - handles the liquid side of pollution control, separating lead paste from slurry and treating acidic waste water from the breaking and separating process.
This is the practical difference between buying pollution control from a generalist and buying it from a recycling plant builder. San Lan's air pollution control machines are designed alongside the plant itself, so the capture hoods, ducting, and filtration stages line up with where the dust and fumes are actually generated.
How to choose the right pollution control partner
- Match the supplier to your recycling stream. Ask for reference installations in your sector, whether that is lead acid batteries, lithium batteries, PCB, or cable. Process-specific experience beats a long generic track record.
- Check the full chain, not just the filter. The best system captures pollution at the source. Confirm that hoods, ducting, pre-separators, and final filtration are all designed for your process.
- Look for integrated plant capability. A manufacturer that can supply the whole recycling line, from shredder to separator to pollution control, makes commissioning simpler and avoids mismatched components.
- Verify compliance support. A good supplier helps you meet local emission standards and provides documentation for environmental approval.
- Consider after-sales service. Installation, commissioning, and spare parts support matter as much as the equipment itself, especially for plants in remote locations.
The bottom line
The leading pollution control equipment manufacturers for the recycling sector are not necessarily the biggest names in general industry. They are the companies that combine proven filtration and scrubbing technology with a real understanding of how recycling plants generate emissions. For a recycler, the safest choice is a partner that can design the pollution control system together with the plant itself, so every capture point matches the process.
With more than fifteen years of experience building e-waste and battery recycling plants for customers in over twenty countries, San Lan Technologies offers exactly this kind of integrated approach. If you are planning a lead acid battery, lithium battery, or circuit board recycling plant and want to see how its recycling equipment handles emissions from start to finish, the San Lan team can walk you through a complete line design tailored to your material and your local environmental requirements.
