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An engineer, soil scientist, or licensed designer may be required to work with the local governing agency to design a system that conforms to these criteria. A more progressive way [citation needed] to determine leach field sizing is by direct observation of the soil profile. In this observation, the engineer evaluates many features of the soil ...
Unlike the traditional septic system, the aerobic treatment system produces a high quality secondary effluent, which can be sterilized and used for surface irrigation. This allows much greater flexibility in the placement of the leach field, as well as cutting the required size of the leach field by as much as half. [1]
A septic tank is an underground chamber made of concrete, fiberglass, or plastic through which domestic wastewater flows for basic sewage treatment. [2] Settling and anaerobic digestion processes reduce solids and organics, but the treatment efficiency is only moderate (referred to as "primary treatment"). [2]
In agriculture, leaching is the loss of water-soluble plant nutrients from the soil, due to rain and irrigation. Soil structure, crop planting, type and application rates of fertilizers, and other factors are taken into account to avoid excessive nutrient loss.
"Biosolids" is a term often used in wastewater engineering publications and public relations efforts by local water authorities when they want to put the focus on reuse of sewage [7] sludge, after the sludge has undergone suitable treatment processes.
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The mound system was designed in the 1930s by the North Dakota College of Agriculture. [1] and was known as the Nodak Disposal System.In 1976, the University of Wisconsin studied the design of mound systems as part of the university's Waste Management Project.
Leachate is a widely used term in the environmental sciences where it has the specific meaning of a liquid that has dissolved or entrained environmentally harmful substances that may then enter the environment.