clarifier

Also around that time, Anthonette Miller - Guide’s Senior Environmental Engineer who oversaw the wastewater treatment plant - ordered that the clarifier be shut down.

From Washington Times ● Dec. 28, 2019

Only two of the three giant blue clarifier tanks at the plant are operable, and the district is deeply in debt.

From Washington Post ● Apr. 16, 2019

Secondary wastewater clarifier tanks and sludge digesters both do their work with beneficial microorganisms.

From Seattle Times ● Feb. 25, 2017

It becomes a search mechanism and a clarifier for identity.

From Salon ● Oct. 28, 2016

From that degree of heat the decomposition goes on in the clarifier till the juice is drawn, and continues in the grande so long as there are feculencies left.

From The Commercial Products of the Vegetable Kingdom Considered in Their Various Uses to Man and in Their Relation to the Arts and Manufactures; Forming a Practical Treatise & Handbook of Reference for the Colonist, Manufacturer, Merchant, and Consumer, on the Cultivation, Preparation for Shipment, and Commercial Value, &c. of the Various Substances Obtained From Trees and Plants, Entering into the Husbandry of Tropical and Sub-tropical Regions, &c. by P. L. Simmonds