Water & wastewater

In a world more focused than ever on safe, sustainable stewardship of our water resources, it is critical to continue to improve the ways in which we measure and treat potable water and wastewater. Increased public awareness drives the need for safe, accurate and reliable level and flow instrumentation, in the harshest environments, under the most extreme conditions.

Applications

Blower air flow

Air flow measurement is required in aerobic digesters and aeration basins. In digesters, oxygenation allows microbes to decompose complex organic compounds. Concrete aeration basins utilize fine or coarse bubble diffusers to aerate the water. In...
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Carbon slurry level

Carbon is employed in adsorption processes for the removal of organic, inorganic, and taste and odor control compounds. Granular Activated Carbon (GAC) and Powder Activated Carbon (PAC) are two leading adsorption treatments, the former utilizing a...
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Clarifier level

In small wastewater treatment facilities with only one clarifier, it is advantageous to know the clarifier’s surface level. In larger plants where influent flow is routed through a splitter box to many clarifiers, there may be insufficient room...
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Digester gas flow

In the anaerobic decomposition process, organic matter is converted into stable solids and energy-rich gas, mainly methane (60%) and carbon dioxide (40%). A combustible hydrocarbon of high fuel value, methane can serve as a fuel for in-plant heat...
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Digester level

The principal biological methods employed in wastewater treatment for sludge stabilization are aerobic and anaerobic digestion. The former utilizes aerobic bacteria to convert organic matter and stabilize biosolids while the latter accomplishes...
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Filter tank level

Following the clarification phase of water treatment, pre-filtered water passes from an inlet channel and onto a filtration bed. As it passes through the bed’s media—sand or anthracite in depth-filtration types; cloth or synthetic membranes in...
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Influent/effluent flow

Flow measurement is accomplished by a transmitter programmed to convert a level reading into units of volume per time, as liquid passes through a flume or weir in an open channel. A flume is a specially shaped portion of the open channel, with an...
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Lift station pump control

Pre-treated wastewater is brought up from inlet trunk sewers to ground level by centrifugal pumps, where it continues on by gravity flow to subsequent treatment. To maintain a desired level in the headworks wetwell, pump speed is often varied....
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Lime slurry level

In terms of annual tonnage, lime ranks first among water treatment chemicals. Lime is used for pH adjustment, phosphate removal, sludge and biosolids conditioning, and in association with other chemicals for precipitation. Lime is initially mixed...
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Sludge level

There are several areas within a wastewater treatment facility where solids settle and are subsequently removed as sludge. These include hoppers, holding tanks, gravity thickeners, and other sludge collection systems. Sludge level is monitored to...
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Splitter box level

Wastewater treatment facilities with a large number of primary clarifiers often employ a concrete tank with chambers and gates known as a splitter box, or distribution box, to split the influent flow into multiple streams that are routed into the...
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Water services

Service water is utilized for general plant services that include pump and instrument seal water, fire water, demineralization, cooling and make-up water supply. Storage tanks with a capacity to support three days to one week of operation, allow...
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Water storage tanks

Storage for reclaimed water ranges from small tanks for potable and service water use, to large, open or enclosed, reservoirs. Large capacity storage - most commonly in open reservoirs - is necessary for off-line storage of peak flows, flow-...
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Water wash tanks

The compressor of a gas turbine ingests a large amount of air containing particulate matter, aerosols of hydrocarbons and other organic compounds and gases. Although the larger particulate matter is filtered out, the other compounds are deposited...
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