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Aerobic Treatment Unit (ATU) System Design Tips And Operations Variables

Providing a suitable environment for microorganisms to treat wastewater is what aerobic treatment units (ATUs) are all about. These advanced systems outshine alternatives on tight lots where there is no room for conventional treatment and on sites with poor soils, shallow vertical separation distances to limiting conditions, and horizontal setback restrictions. Some systems can be designed for the treatment of high-strength wastewater or where total nitrogen removal is required.


As seen in Water & Wastes Digest: Tanks are the backbone of most water and wastewater systems, and though the function of a tank as a storage vessel has not changed, the versatility and performance of today’s tanks certainly has. Much of this relates to manufacturing advances that allow for production of strong, lightweight plastic tanks of varying sizes. These new tank designs are durable, allow for easy transportability to remote and challenging sites, and are inert to wastewater constituents boosting longevity. In potable water and rainwater capture systems, plastic tanks have emerged as a top choice.