When it comes to air pollution control one question we often hear from customers is simple: "Which scrubber is right for my industry?" The answer is not always as simple as choosing between a wet scrubber and a dry scrubber. Every industry has its process conditions, pollutants, airflow, temperature, space limitations and operating requirements. So of selecting a scrubber just because it is commonly used it is important to understand what actually suits your application. A wet scrubber uses a liquid, usually water or a suitable chemical solution to capture and remove pollutants from the exhaust gas. It can be a choice for industries handling acidic gases, alkaline gases, fumes, dust and other soluble pollutants. Depending on the application different designs such as packed bed scrubbers, venturi scrubbers and spray scrubbers can be considered. The right design can help achieve the required emission control while maintaining operating conditions. A dry scrubber works on a principle. Of using a scrubbing liquid it uses dry chemicals or adsorbent media to react with or capture specific pollutants. This can be useful for applications where water usage needs to be minimized or where handling an effluent is not preferred. Dry systems can also offer advantages in terms of liquid handling and reduced wastewater generation depending on the application. But here is the point: there is no universal "best scrubber." A solution that works perfectly for one plant may not be suitable for another. For example pollutant characteristics, concentration, gas temperature, required efficiency, available space, chemical consumption, maintenance requirements and overall operating cost all need to be considered before finalizing the system. This is where proper engineering makes a difference. At APZEM Environmental we first understand the customers process. Then evaluate the most suitable air pollution control approach. Whether the requirement calls for a scrubber, dry scrubber or a customized combination of technologies our focus is on finding a practical solution that meets the applications performance requirements. So before choosing a scrubber based on price or standard specifications take a step back and look at the complete picture. The smarter choice is not simply wet or dry, it is the technology that's right, for your process.
