Treatment Process

    The Hominy Creek Water Reclamation Facility uses the same physical, chemical and biological processes used by nature to clean water.Everything we know about water, chemistry, bacteria, hygiene and engineering has gone into these systems we use to purify our wastewater.  All wastewater entering the plant is lifted by influent pumps and then flows by gravity to the treatment processes.

Initially, wastewater passes through bar screens and grit collectors for removal of debris and sand.  This is called preliminary treatment.  Next, the wastewater enters primary clarifiers that remove heavy organic solids and floatable materials such as grease.  The third step is biological treatment.  The lighter organic solids and soluble material that will not physically settle out are converted to a solid residue for removal.  This treatment process is commonly referred to as the "activated sludge process."

 Wastewater treatment

Microorganisms cultivated within the aeration basins use the organic matter for food and convert the material to a solid residue that can be settled out of the flow stream in the secondary clarifiers.  Air, required by the microorganisms, is supplied by three motor driven blowers.  Also, nitrification and denitrification occurs in the aeration basins. A portion of the settled biosolids from the secondary clarifiers is recycled to the aeration basins to maintain the microorganisms' population.  The remaining biosolids are then processed at the wastewater plant's new solids dewatering facilityThe final effluent is discharged into Contentnea Creek, the largest sub-basin in the Neuse River Basin.

Aeration Basins

Contentnea Creek