NH3 Scrubber | 99.8% Ammonia Removal | Explosion-Proof Design

Ammonia is a highly soluble alkaline gas that reacts with acids to form harmless ammonium salts. Alkali washing has no effect on ammonia and will actually increase ammonia emissions by raising the pH of the scrubbing solution.

Our system uses dilute sulfuric acid (H₂SO₄) as the absorbent, which reacts with ammonia to form ammonium sulfate—a valuable fertilizer byproduct. Learn more in our ammonia emission compliance guidelines.

Ammonia has a very low human odor threshold of 5 ppm. Our two-stage acid washing design reduces ammonia concentrations to below 1 ppm, which is undetectable by the human nose.

For extremely sensitive locations, we add an activated carbon polishing stage to remove any residual odors and trace organic compounds, ensuring zero odor complaints from surrounding communities.

Ammonia forms explosive mixtures with air at concentrations between 15-28% by volume. Even small electrical sparks or static electricity can ignite these mixtures, causing catastrophic explosions.

Our ATEX-compliant scrubbers use explosion-proof electrical components, static grounding, and pressure relief valves to eliminate ignition sources and protect personnel and equipment.

Ammonium sulfate is a valuable nitrogen fertilizer. Our system can be configured to concentrate and recover the ammonium sulfate solution, which can be directly used for agricultural irrigation or sold as a commercial byproduct.

For facilities without agricultural use, the solution can be neutralized and discharged to the municipal wastewater system or treated on-site using biological denitrification.

Yes, polypropylene (PP) is completely resistant to ammonia and ammonium sulfate solutions at temperatures up to 82°C. Unlike steel, which corrodes rapidly in ammonia environments, PP maintains structural integrity for 15+ years.

PP is also lightweight, easy to install, and cost-effective, making it the industry standard material for ammonia scrubbers worldwide.

Ammonia scrubber sizing for livestock farms depends on three factors: total barn air volume, average ammonia concentration, and required outlet emission limit. As a rule of thumb, allow 1.5-2.0 m/s empty tower velocity for optimal gas-liquid contact.

Our engineers can provide a detailed sizing calculation based on your specific farm size, animal population, and ventilation rate. Refer to our ammonia scrubber sizing calculation guide for more information.

With proper operation, our ammonia scrubber systems require minimal maintenance. We recommend daily checks of pH and conductivity levels, weekly inspections of spray nozzles and packing, and quarterly calibration of sensors.

A complete annual service, including pump inspection and electrical system testing, is also recommended. Download our NH3 scrubber anti-crystallization maintenance checklist for detailed procedures.

The most common issues are ammonium sulfate crystallization (clogging nozzles and packing), pH control drift, and odor breakthrough. Crystallization can be prevented by automatic dilution control and regular backwashing.

pH control drift is usually caused by improper acid dosing or sensor calibration issues. For troubleshooting guidance, see this comprehensive guide on common ammonia scrubber troubleshooting.

Yes, our ammonia scrubbers are designed to meet or exceed all relevant global regulations, including EPA 40 CFR Part 60, OSHA 29 CFR 1910.94, EU BREF, and ATEX explosion protection standards.

The 99.8%+ removal efficiency ensures that outlet concentrations are well below the OSHA ammonia permissible exposure limit of 25 ppm and most national odor control standards.

Yes, we can design custom systems for mixed gas streams containing ammonia, hydrogen sulfide, and volatile organic compounds (VOCs). For mixed streams, we may recommend a multi-stage system with acid washing, alkali washing, and activated carbon adsorption to optimize removal efficiency for each gas.

For facilities with both acidic and alkaline gas emissions, we can design an integrated system that shares components and reduces overall capital and operating costs.