Sulfur Dioxide Scrubber Installation kenya February 8, 2025 sazenviro Post in Uncategorized An industrial wastewater treatment facility in Kenya faced stringent updates to the National Environment Management Authority (NEMA) Air Quality Regulations, requiring sulfur dioxide (SO₂) emissions to be reduced to a maximum of 18 ppmv (parts per million by volume). The plant’s multiple hearth incinerator, used to combust biosolids, generated exhaust gas containing 500–600 ppmv SO₂, exceeding permissible limits. While an existing wet electrostatic precipitator (WESP) effectively removed particulate matter, it could not address acidic gases like SO₂. The plant required a cost-effective, space-efficient solution to integrate downstream of the WESP, ensuring compliance with Kenya’s Environmental Management and Co-ordination Act (EMCA). Key challenges included high humidity in the exhaust stream, corrosive gas conditions, and the need for minimal operator intervention. SolutionSAZ ENVIRO designed a custom-packed tower wet scrubber to neutralize SO₂ emissions using a high-efficiency caustic scrubbing system (18–22% NaOH solution), tailored to Kenya’s operational and climatic conditions. Key innovations included: Enhanced Scrubbing Performance: Gas Flow Rate: 10,000 ACFM (actual cubic feet per minute) with a gas velocity of 3.2 m/s and a pressure drop of 1.0 inch WC, optimized for energy efficiency. Packing Media: Durable polypropylene Tri-Packs (1.5-inch diameter), achieving 99% SO₂ removal efficiency by maximizing gas-liquid contact. Mist Elimination: A two-stage fiber-reinforced polypropylene (FRPP) mist eliminator with 99.5% efficiency, critical for Kenya’s humid environment. Corrosion-Resistant Design: Constructed from FRPP (fiber-reinforced polypropylene) and 316L stainless steel critical components, ensuring longevity in corrosive, high-moisture conditions (temperatures up to 75°C). Adaptive Control System: Automated PLC Controls: Real-time monitoring of pH, liquid level, and gas flow, with automated NaOH dosing to maintain optimal scrubbing chemistry (pH 9.5–11.5). Low-Consumption Design: Closed-loop recirculation reduced NaOH consumption to 45 L/hr, minimizing operational costs. Localized Support: SAZ ENVIRO partnered with Kenyan engineering contractors for installation, ensuring compliance with local safety and construction standards. ResultThe SAZ ENVIRO scrubber was installed and commissioned within 5 weeks, with on-site training for plant operators. Post-installation testing demonstrated: SO₂ reduction from 580 ppmv to 6 ppmv, surpassing NEMA’s 18 ppmv limit. 95% uptime due to ruggedized materials and automated controls suited to Kenya’s variable operational conditions. Full compliance with NEMA’s Air Quality Regulations (2014) under EMCA and alignment with ISO 14001 environmental management standards. The plant’s facilities manager stated: “SAZ ENVIRO’s scrubber not only resolved our compliance challenges but also reduced chemical costs by 30% through efficient NaOH usage. Their local technical support ensured minimal downtime during integration.” By leveraging region-specific engineering and robust automation, SAZ ENVIRO delivered a sustainable solution that aligns with Kenya’s vision for cleaner industrial growth. SAZ ENVIRO – Pioneering Air Quality Solutions in AfricaTailored emission control systems for industrial and municipal applications across East and West Africa. Packed Tower Wet Scrubber for Rubber Plant Egypt Wet Scrubber Manufacturer Kenya Air Washer Manufacturer Uganda Wet Scrubber Manufacturer Ghana Wet Scrubber Manufacturer Mozambique Wet Scrubber Manufacturer South Africa Air Washer Manufacturer South Africa Wet Scrubber Manufacturer Ethiopia Wet Scrubber Manufacturer Africa Wet Scrubber Manufacturer Boiler Flue Gas Cleaning System Chromic Acid Fumes Scrubber Kenya Industrial Blower Fans Manufacturer Industrial Pollution and Environmental Responsibility