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Odor Control Applications

  • Headworks Odor and Corrosion Control Using Hydrogen Peroxide

    Hydrogen Peroxide typically controls odors and corrosion at treatment plant headworks by direct oxidation of hydrogen sulfide (H2S) within the wastewater. In the direct oxidation mode, H2O2 is applied to the wastewater 5-30 minutes prior to the point where the odors are being released, generally as the wastewater line enters the plant boundary. The efficiency of hydrogen peroxide treatment depends upon the available reaction time, the level of iron in the wastewater (reaction catalyst), wastewater pH and temperature, and the initial and target levels of H2S odor. Under optimal conditions, effective dose ratios are 1.2 - 1.5 parts H2O2 per part dissolved sulfide, and can be reliably estimated through beaker tests. H2O2 + H2S → S0 + 2H2O Frequently, control of odors through the primary clarifiers is wanted. In such case, the mechanism of control is both direct oxidation of H2S (as it rises from the solids blanket), and prevention of odor generation (by supplying dissolved oxygen). Control is typically achieved with a booster dose of 1-2 mg/L H2O2 added to the clarifier influent. Higher doses or alternate modes of addition may be required in cases where: 1) hydraulic retention times are > 2-3 hours; 2) solids blanket depths are > 1-2 feet; 3) soluble BOD levels are > 200-300 mg/L; or 4) waste activated sludge is co-settled with the primary solids. 2H2O2 → O2 + 2H2O

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

  • Floating Cover – Industry

    The Hexa-Cover Floating Cover is the optimum solution as a cover for almost any form of surface liquid, i.e.: Chemicals Chemical, Oil Oil, Leachate Leachate, Decoction Decoction, Food and Beverage Food and Beverage, Pulp and paper Pulp and paper, Hexa-Cover(R) Floating Tile Cover Fish farms, Slaughter houses Slaughter houses, Dairies Dairies, Cement plants Cement plants, Mines Mines, Dredging and excavation works Dredging and excavation works, , for controlling odor, heat loss, emission etc.

    By Hexa-Cover A/S based in Thisted, DENMARK.

  • Groundwater Monitoring for Remediation

    Many fresh water sources have been degraded to toxic levels by the inclusion of industrial, agricultural, and human waste products that have been discharged into the closest body of water, accidentally or deliberately for many years.

    By HERON Instruments Inc. based in Dundas, ONTARIO (CANADA).

  • Painting & Coating

    Paint fumes are Unbreathable. Spray Painting VOCs and Powder Coating dust are both harmful pollutants which are produced during painting operations. The volatile organic compounds (VOCs) emitted from paint can cause respiratory issues and require proper ventilation to remove harmful gasses from the work area. Powder Coating lines and spray painting produce dangerous fumes and dusts which need to be filtered or exhausted outside your facility. Industrial coatings and chemicals can produce toxic VOCs and foul odors which can effect worker`s health and reduce productivity. Some of the most common coatings are polymers which include polyurethane, epoxy and moisture-cure urethane. Many different industries required the use of glues, adhesives, solvents and different chemical agents in their production process, but are unsure of the best way to handle this nuisance. Exhausting fumes outside may be an option when VOCs are extremely dangerous and odorous but companies must also comply with EPA guidelines which regulate which gases can be emitted. In cold climates and in air-conditioned facilities, capturing, filtering and recirculating fumes can provide huge energy savings preventing costly heat loss and energy intensive air makeup systems. Utilizing activated carbon granules can allow operators to filter VOCs and odors from painting and cutting applications. Different quantities and types of carbon modules are required depending upon the contaminant. Contact Diversitech with an MSDS sheet detailing your chemical`s characteristics for an evaluation of your workplace air quality problem.?

    By DiversiTech based in Montreal, QUEBEC (CANADA).

  • Odor control solutions for industrial sector

    Malodors can commonly be the by-prodcut of many industrial and manufacturing processes. Oil refineries and petrochemical plants may generate large volumes of odor from the processing and refining of different fuels. Sulfides, mercaptans, and hydrocarbon compounds are all closely related to the petro-chemical industry. The odors generated from these industrial compounds are of a high nuisance value and generally create concern among local air boards and the public communities which surround these plants.

    By Ecolo Odor Control Technologies based in Toronto, ONTARIO (CANADA).

  • Odour removal units for professional kitchen ventilation

    Our company has odour removal units for professional kitchen ventilation, for grills and food preparation areas generally. The operation of the unit is based on chemical or electrostatic filters or a combination of both. The kitchen unit KDSA (with chemical filters) series, neutralizes particles, soot, odors, grease and moisture completely. KDSA units for kitchen ventilation are installed in the cooker hood and are connected with the kitchen areas that produce smoke or where there is smoke and odors such as in kitchen funnels or in washing facilities. The air stream in the deodorizer passes through a set of filters where particles, grease, soot and odors are removed.

    By Dimtech S.A based in Keratsini, GREECE.

  • 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).

  • Odor control solutions for wastewater industry

    Municipal wastewater treatment plants (wwtp) provide an essential community service that is vital for the protection of public health and the environment in which we live. Without affordable wastewater services, the quality of life within a community or municipality can be drastically diminished. Most cities, towns and communities in the US and Cananda provide wastewater treatment services, unfortunately these services and plants come with many undesirable off gasses and odors. There are a number of challenges that currently face the wastewater treatment industry including, global urban population growth, more stringent discharge regulations for industries, and demand for water conservation through wastewater reuse.

    By Ecolo Odor Control Technologies based in Toronto, ONTARIO (CANADA).

  • Odor control solutions for solid waste industry

    Today in modern society we generate waste and and we generate it in vast quantities. Professionals around the world are dedicated to processing this material as efficiently as possible. Efficient processes and higher population density increase the risk of affecting the quality of life of workers, neighboring communities and the overall population.

    By Ecolo Odor Control Technologies based in Toronto, ONTARIO (CANADA).

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    Applications and Air Pollutants Removed in the Food Products Industry

    Complete line of dry and wet collectors for applications requiring removal of particulate from dryers, mixers, blenders and tanks. Odor control wet chemical scrubbers with liquid or gas phase oxidation chemistries and Bioscrubber systems to control odoriferous food products, ingredients and flavor emissions from processes and dryers including fish odors. Corn acidulation and starch processing acid and ethylene oxide emissions. Remove smoke house emissions and particulate, grease and odors from meat cookers and fryers. Ethanol emissions from baking ovens. Ammonia from refrigerant evacuation. Sodium hydroxide mists from CIP cleaning of tanks and equipment. Waste heat recovery and more. 

    By Bionomic Industries Inc. based in Mahwah, NEW JERSEY (USA).

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    Waste water treatment plants Air quality control by TRS MEDOR

    Context & Challenges Globally, the wastewater treatment is the first public health issue. Urban development leads to urbanization near waste water treatment plant and extension of sewerage network. These aspects induce to an augmentation of sulfur compounds (H2S, mercaptans and sulfides) which are very corrosive, odorant and toxic. To monitor this compounds online CHROMATOTEC® offers high meteorological solutions. At the entrance of the waste water plants, where the waste water arrives, strongly smelling and polluted air is captured and neutralised by a chemical cleaning process called ‘’Stripping’’. The correct amount of chemical products needed to neutralise the polluted air has to be calculated.

    By Chromatotec Group based in Val de Virvée, FRANCE.

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    Waste water treatment plants Air quality control by TRS MEDOR Online Odor Monitoring

    ontext & Challenges Globally, the wastewater treatment is the first public health issue. Urban development leads to urbanization near waste water treatment plant and extension of sewerage network. These aspects induce to an augmentation of sulfur compounds (H2S, mercaptans and sulfides) which are very corrosive, odorant and toxic. To monitor this compounds online CHROMATOTEC® offers high meteorological solutions. Odors are very distinct air contaminants as they generate nuisances. The factors playing a role in the determination of odor annoyance are: odor concentration and intensity, frequency, appreciation, duration, synergy and location. CHROMATOTEC® proposes an automatic solution to well identify the origin and the level of odors.

    By Chromatotec Group based in Val de Virvée, FRANCE.

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    Abatement and Remediation

    Containment and safety issues are a critical consideration when working on any mold, asbestos, or lead remediation/abatement projects. Improperly contained, the dust and bio-contaminants released can, be very harmful for both on-site workers and occupants in neighboring areas. Exactly how you approach your containment and capture solutions will depend on the individual site’s risk assessment report. If you need help identifying solutions to the issues raised in the report, feel free to contact our customer service department and we can review your options together. In most cases, however, there are four common considerations that will be relevant: -Meeting Containment and Air Change Requirements -Monitoring of Containment Pressure -Sterilization of Filtered Air -Removal of Odors, Mold Spores, VOC’s and other Airborne Bio-Contaminates

    By Omnitec Design, Inc. based in Mukilteo, WASHINGTON (USA).

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    Applications and Air Pollutants Removed in the Chemical, Pharmaceutical and Plastics Industries

    Supplying for over 35 years reliable air pollution control equipment and systems for removal of all gaseous compounds, particulate and odors from chemical process operations, reactors, dryers, calciners, membrane cells, pharmaceutical reactors and tablet dryers, crystallizers, vessel filling and storage vent emissions, emergency scrubbing of high concentration gas releases from cylinders, vacuum pump emissions, Quench /scrubber systems for acid gases and particulate from high temperature thermal oxidizers.  Gaseous emissions from piloting operations and research lab hoods. Specialty NOx abatement for explosives manufacturing and other process operations. Recovery and re-concentration of acids and other gaseous contaminants including by-product production.

    By Bionomic Industries Inc. based in Mahwah, NEW JERSEY (USA).

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    Air pollution control for the food and bakery industry

    Anguil`s Food and Bakery industry experience provides reliable solutions for your emission control challenges. We have worked on a wide range of applications: achieving a high destruction level of ethanol from bakery ovens, chaff and particulate from coffee roasting, efficiently destroying grease from frying and rendering operations, handling smoke house emissions, and maintaining required opacity and odor levels from confectionery and gum manufacturing.

    By Anguil Environmental Systems, Inc. based in Milwaukee, WISCONSIN (USA).

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    Air cleaning system for the pharma/clean mfg

    Dynamic Air Cleaners are used in clean manufacturing operations to remove dangerous airborne particles that other air cleaning systems miss…including ultrafine particles and gas phase contaminants...without producing any harmful ozone.  Dynamic Air Cleaners also have a significant impact on removing odors from outside ventilation air.

    By Dynamic Air Quality Solutions based in Princeton, NEW JERSEY (USA).

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    Waste recovery for organic wastes e.g. PCBs & Dioxins

    Tetronics` technology destroys organic wastes including Polychlorinated Biphenyls (PCBs) and other types of Persistent, Bio‐accumulative, and Toxic (PBT) pollutants at very high efficiencies across a wide range of concentrations.

    By Tetronics (International) Limited based in Swindon, UNITED KINGDOM.

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    Humid, corrosive and malodorous waste gases

    CTP's expertise with different coating systems, and an energy-saving pre-heater, protect the installation from corrosion even when waste gases are humid.

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    Odor Control

    We treat air streams to remove odors allowing industrial processes to be operated in compliance with local regulations and without causing a nuisance to neighbors due to odors and smells. Our technologies have been applied to a range of processes including: Waste treatment (municipal and industrial) Manufacture of flavors Food processing Waste water treatment (Municipal and industrial) Chemical manufacture Rendering

    By Babcock & Wilcox MEGTEC based in De Pere, WISCONSIN (USA).

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