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container handling system Applications

  • Welding Fume Extraction

    Welding fumes & gases are Unbreathable. Nonetheless, welding is perhaps the most common industrial process and necessary anytime the joining of metals is required. Regardless of the welding equipment type or technology, the simple process of melting metal and filler materials creates poisonous fumes and gases. ? Different types of welding processes present unique challenges to adequately handle airborne fumes. Robotic welding equipment and other automated welding systems produce a high volume of welding fumes and sparks and need to captured by a heavy duty robotic welding hood. Moreover, manual stick welding typically produces a high volume of smoke and often requires a self-cleaning fume extractor to avoid overwhelming the filters.? Lighter duty applications like MIG welding generally produce less particulate and light-duty TIG welding generates the least amount of smoke. It is important to not only consider the type of welding process but also the work piece material in order to select the correct filtration media for your application. HEPA filters are recommended for stainless steel welding, Nanofiber filters for Aluminum and parts containing higher levels of Manganese. Polyester filters are appropriate where rust inhibitor, lubricants and coatings create an oily smoke as these filters can be washed in water. Diversitech offers a complete line of fume collection machines from compact welding fume extractors to central welding fume filtration systems. We specialize in engineered solutions and our engineering team is experienced in selecting the best equipment and filter media for your particular application. We can present you with detailed technical drawings demonstrating several potential layouts and solutions including costing, installation and start-up expenses. ??

    By DiversiTech based in Montreal, QUEBEC (CANADA).

  • Sulfide Oxidation with Hydrogen Peroxide (H2O2)

    Sulfide Odor Control Sulfide is found throughout the environment as a result of both natural and industrial processes. Most sulfide found in nature was produced biologically (under anaerobic conditions) and occurs as free hydrogen sulfide (H2S) - characterized by its rotten egg odor. We are most likely to encounter biogenic H2S in sour groundwaters, swamps and marshes, natural gas deposits, and sewage collection/treatment systems. Manmade sources of H2S typically occur as a result of natural materials containing sulfur (e.g., coal, gas and oil) being refined into industrial products. For a variety of reasons - aesthetics (odor control), health (toxicity), ecological (oxygen depletion in receiving waters), and economic (corrosion of equipment and infrastructure) - sulfide laden wastewaters must be handled carefully and remediated before they can be released to the environment. Typical discharge limits for sulfide are < 1 mg/L. Sulfide Treatment Alternatives There are dozens of alternatives for treating sulfide laden waters, ranging from simple air stripping (for the low levels present in groundwaters) to elaborate sulfur recovery plants (used to treat several tons per day at refineries and coal burning power plants). There are processes based on biology (using compost filters, scrubbing media, or inhibition/disinfection), chemistry (oxidation, precipitation, absorption, and combination), and physics (adsorption, volatilization, and incineration). Each process occupies a niche which is often defined by the scale and continuity of treatment, whether the sulfide is in solution or is a gas, the concentration of sulfide involved, and the disposition of the sulfide containing medium. However, for reasons relating to convenience and flexibility, chemical oxidation (using hydrogen peroxide) continues to grow in its scope of application. Treatment with Hydrogen Peroxide While other peroxygens such as permonosulfuric (Caro’s) acid, peracetic acid, and persulfates will oxidize sulfide, their use for this application is overkill. Hydrogen peroxide (H2O2) is considerably simpler and more cost-effective. H2O2 may control sulfides in two ways, depending on the application: Prevention - by providing dissolved oxygen which inhibits the septic conditions which lead to biological sulfide formation; and Destruction - by oxidizing sulfide to elemental sulfur or sulfate ion.

    By USP Technologies based in Atlanta, GEORGIA (US) (USA).

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