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Aerators are tools or products that put or allow air into soil and water, where it is needed. These situations range from yards that have baked hard and solid in scorching heat, to standing water that contains disease organisms, to indoor household faucets that waste water. The cost of such aerators ranges from less than a dollar to thousands of dollars.

Cost is a primary factor in any purchase, since neither individuals nor institutions get ahead by wasting resources allocated to the environment. Equally important is buying the right product to get the job done. A lawn aerator that measures 42 inches or more in width isn't going to work in an awkward corner of a small yard. A hand aerator in that instance is considerably less expensive and will take care of any dried-out areas.

The benefits from using aerators are many, since the view of a richly green lawn, for example, far outweighs the sight of a lawn that's a patchwork of pastel green and brown. A backyard pond without either a circulating pump or an aerator will quickly smell like a swamp. It will also become toxic to fish, turtles, or other wildlife.

Industrial Strength Aerators
Industrial uses for aerators and mixing systems include municipal waste systems, paper and textiles, petrochemicals, pharmaceuticals, and the food and beverage industry, among others. Jet aerators require less maintenance, since they have no moving parts inside a storage tank, for example. Needed pumps or blowers are set up outside the tanks.

Jet aerators are available in directional mix or bi-directional mix configurations. A long, narrow tank will accommodate the single direction aerator along one side. However, a wider or square tank will permit a bi-directional jet aerator to be set up down the center. Eddy mix aerators have nozzles arranged in a circle around the section (chamber) through which both liquid and air arrives to be sent out through the nozzles and circulated.

Mechanical mixers or aerators are still very commonly used in certain applications such as wastewater holding lagoons. Such lagoons are more common in smaller communities than they are in cities. The motor-driven aerators either float on top of the liquid or are submerged. Each type may work in a variety of different ways, depending on the design. Aeration is key to the biodegrading bacteria being able to work quickly in this biological process and prevent bad odors.

Water Conservation
Cities in regions where water supply is a constant source of concern, such as the southwestern United States, have water conservation programs in place. Some regulations, like lawn watering restrictions, are mandatory for all residents. Most other regulations are mandatory for homes built in the past decade or two. However, owners or tenants of older homes are encouraged to follow the same guidelines.

Indoor conservation rules require the installation of faucet aerators in sinks and showers. These cut the volume of water used in half, a big savings, without changing the effectiveness of the stream of water. However, the use of aerators in showerheads is not entirely popular, since the resulting spray is too light for people who work in really grimy jobs.

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