MAULDIN ROAD WATER RESOURCE RECOVERY FACILITY

The Influent Pump Station directs all untreated wastewater into the treatment facility, preventing discharge into the watershed before proper treatment. It is equipped with six 20 million gallon per day pumps that activate automatically based on incoming flow levels.

Primary clarifiers play a crucial role by removing approximately 90% of solids from the wastewater. The settled sludge is then directed to downstream processes to support digester operation.

Aeration basins support biological treatment, where microorganisms remove nutrients like phosphorus, ammonia, nitrates, and nitrites. The three zones—anaerobic, anoxic, and aerobic—each promote specific processes for nitrogen removal and organic matter reduction.

Secondary clarifier removes finer, less dense solids following biological

treatment. They settle microorganisms from the aeration basins, allowing clean, clarified water to flow from the top.

Deep bed filters use multiple layers of media, such as sand, to remove remaining particles and debris from the water. This step helps protect the downstream UV disinfection system by ensuring clearer water for effective treatment.

The UV system disinfects wastewater using 254nm ultraviolet light, which changes the DNA of bacteria so they cannot reproduce, making them harmless.