GA Water/WW Operator case studies
GA Water/WW Operator · Put your knowledge to work in context.
The Georgia Water & Wastewater Operator credential is a state certification administered through the Georgia Environmental Protection Division (EPD) for the people who run and maintain drinking water treatment plants, drinking water distribution systems, wastewater treatment plants, and wastewater collection systems. It is aimed at both entry-level operators preparing for a first certification and experienced operators adding a class, a system type, or a specialty. The GA Water/WW Operator case studies are 5 cases and about 4,746 words.
1Filter Breakthrough After a Storm at a 6-MGD Conventional Plant
Riverton WTP treats 6.0 MGD of reservoir water with alum (32 mg/L), flocculation, sedimentation and four dual-media filters of 350 sq ft each. Design loading is 3 gpm/sq ft.
950 words, about 5 min2Lost Chlorine Residual at a Dead End
A 4,900-connection community buys finished water with 0.85 mg/L free chlorine at the entry point. The 1.2-MG elevated tank has sat between 88% and 92% for three weeks because late-summer demand fell to 0.75 MGD against a 1.4 MGD normal average.
885 words, about 4 min3Nitrification Failure and Bulking at an Oxidation Ditch
A 2.5-MGD extended-aeration oxidation ditch serves 9,000 people but is running 3.1 MGD because of infiltration. Mixed liquor is 3,400 mg/L in a 0.9-MG ditch; waste activated sludge is 90,000 gpd at 6,500 mg/L; effluent TSS is 18 mg/L.
1,003 words, about 5 min4SSO at Station 14+00
on a Sunday the high-level alarm sounds at the Route 9 lift station. Both pumps are running but the wet well keeps rising.
907 words, about 5 min5Chlorine Leak at the Cylinder Room
the chlorine room sensor at a 12-MGD plant alarms at 3 ppm, and the cylinder scale shows the 150-lb cylinder on the west manifold losing weight faster than the doser should be using. The chlorine room door opens onto the chemical corridor, which leads to the lab.
1,001 words, about 5 min