About Us
Air Contact
Say something interesting about your business here. Products which operate through air contact must be misted, atomized, fogged, or otherwise initiated intothe air containing the offensive gases. This may be in either indoor or outdoor situations, and requirescorresponding equipment and technology depending on the exact situation. As the term "air contact"implies, these products work by coming into physical contact with the molecules of the odor in theatmosphere. Consequently, the product must be introduced in a form that allows its molecules to travelwherever the odor molecules are traveling. The product particles must be small enough and light enoughto stay in the air so that the odds of their coming into contact with the odorous molecules are increased. In general, GOC prefers atomization systems instead of fogging or misting due to the smaller size andlower weight of the atomized particles. The nozzles we recommend and sell expend less than 1 gallonof total fluid per hour at continuous operation. Some atomize only one half gallon per hour. There arecertain situations which require high volume while retaining small particle size. We utilize special airpowered nozzles with capacities up to 6 gallons per hour and more for these situations. We recommendlow pressure hydraulic systems for outdoor use or use in very large indoor areas, and compressed airsystems for indoor use in smaller applications, exhaust stacks, or in any situation where totalintroduced moisture is an issue.
Control devices for these systems allow continuous or intermittent operation depending on the needs of the particular situation. Examples of situations for hydraulic systems include perimeters of landfills, themixing or turning areas of compost sites, large transfer station floors, and feedlots. Examples of situationsfor compressed air systems include smaller transfer stations, pressing rooms in wastewater treatmentplants and paper mills, garbage rooms or compactor areas in buildings and hotels, and even restrooms.In some applications, deodorization equipment may be attached to existing equipment and/or vehicles.This is especially true at landfill and compost sites. Some situations offer very few alternatives other than air contact treatment. This may be for physicalreasons, process reasons, or economic reasons. Other sites may be treatable in more than one way,or they may require a combination of treatments. In some situations, a perimeter air contact(atomization) system is installed as an emergency fall-back treatment for use only when other systemsfail to contain odors or cannot keep up with odor generation. For example, a transfer station that normallyutilizes topical treatment of the receiving floor and incoming wastes might maintain an atomizing systemover doors or near a perimeter as an emergency measure in conditions of high heat and humidity, orwhen an extremely odorous load arrives.
Surface Contact
Surface contact products are designed to work topically on odor producing substrates. They can be
utilized on liquid or solid surfaces, and primarily work in one of two ways. They may form a crust or
surface seal or barrier to keep gases in, or they may form an area of increased biological or chemical
activity at the surface which limits or changes the reactions occurring and thus changes the types and
quantity of gases formed and emitted. Surface contact products may be applied using hand-held or
pressurized sprayers, or they may be applied with overhead nozzle systems, or attached to existing
equipment. In exact opposition to air contact systems, the particle size required to deliver these
products is larger and heavier than air. These particles need to drop quickly and spread over the surface.
They contain powerful surfactants to help the product penetrate rapidly and thoroughly. The desired
delivery system will lose minimal amounts of product to evaporation or to drifting.
Once a surface application is completed, further control is unnecessary until new material is introduced
or the surface area is agitated, turned, or otherwise disturbed. For example, a compost windrow treated
topically would need additional treatment after or during turning because one of the functions of turning is
to move the surface material into the interior of the row and to move the internal material to the surface.
A new surface is created by this action and therefore a new treatment is necessary.
Topical treatment is a very effective method of controlling nuisance odors in landfills. Topical products are cost effective for large surface areas, and many landfills have water trucks on hand. Adding a water cannon or fire nozzle to these trucks converts them to an excellent system for application of topical products. Usually one or two applications per day (midday and closing) are sufficient to eliminate or contain most odors.
When treating liquid substrates such as holding ponds, manure lagoons, or leachate ponds, remember that strong winds creating a choppy surface will be constantly agitating and changing the surface materials. This makes these surfaces difficult if not impossible to treat topically without regular re-application. The same is true for ponds and lagoons utilizing aeration or bubbling systems. Such applications are far more suited to incorporation treatments.
Incorporation
As the name implies, these products are actually mixed, injected, dripped, or otherwise infused into
a substrate. There are products suitable for liquid substrates, and products suitable for solid substrates.
These products are utilized in composting, wastewater treatment, wet well and lift station treatment,
facultative lagoons, and other applications.
In composting, methods such as static pile and aerated static pile are ideal for incorporation treatment.
The products may be incorporated at the same time the various feedstocks are being mixed together.
Incorporation is also ideal in digesters and lift stations in wastewater treatment, where a drip system or
metering pump may be the only equipment needed.
GOC does not primarily develop or sell bacterial products. Some GOC incorporation products work by
influencing the micro-biology of the decomposing wastes in the substrate. By delivering selected nutrients
and oxygen-rich compounds, these products increase the presence of microbes producing non-odorous
waste by-products while decreasing the presence of microbes which produce odorous by-products. This
is accomplished by modifying the substrate such that it enhances and encourages bacterial proliferation.
At GOC we believe the substrate must be modified to support desired microbial activity.
Without a supportive substrate, the addition of bacteria directly will be a brief fix that must require continuous reapplication.
Other GOC products utilize chemical reactions such as saponification (a reaction in which animal or vegetable fats, oils, and grease are converted to soaps) to eliminate the compounds which facilitate odor formation.
GOC incorporation products are extremely cost effective and represent excellent alternatives to the more conventional methods of air and surface contact.
Major examples of each method may be found in the applications section of this site. The advantages and disadvantages of each method are outlined in the table below.