TX Water/Wastewater Operator case studies
TX Water/Wastewater Operator · Put your knowledge to work in context.
The Texas Water/Wastewater Operator certification is a state credential issued through the Texas Commission on Environmental Quality (TCEQ) that qualifies an individual to operate public drinking water systems and wastewater treatment facilities in Texas. Operators are classified by level, and the exams test the knowledge needed to keep treatment and collection systems running safely and in compliance with state rules. The TX Water/Wastewater Operator case studies are 5 cases and about 2,710 words.
1Chlorine Residual Crash After a Storage Tank Turnover
You operate a 4.2 MGD surface-water plant feeding a 1.5-million-gallon elevated storage tank and a distribution system with roughly 38 miles of main. Free chlorine leaves the clearwell at 2.1 mg/L.
564 words, about 3 min2Lift Station Wet-Well Pump Cycling and a Force Main Air Pocket
A duplex submersible lift station serves a subdivision of 420 homes. Each pump is rated 350 gpm at 60 feet TDH.
501 words, about 3 min3Filter Run Shortened by a Coagulant Change
A conventional 6 MGD surface-water plant treats a reservoir source with turbidity that swings from 4 to 30 NTU after storms. The plant uses alum coagulation, flocculation, sedimentation, and four dual-media (anthracite/sand) filters.
548 words, about 3 min4Sanitary Sewer Overflow During Wet-Weather Infiltration
A 12-inch vitrified clay gravity sewer carries dry-weather flow of 0.9 MGD to a treatment plant. During a 3-inch rain event, flow at the plant influent jumps to 4.5 MGD within six hours, and a manhole upstream of a 10-inch downstream segment surcharges and overflows into a storm ditch that discharges to a creek.
505 words, about 3 min5Distribution System Pressure Complaint and a Closed Valve
A pressure zone serving 1,100 connections is fed by a 12-inch transmission main from a 0.5-MG ground storage tank with a booster pump station (two 1,200 gpm pumps, one lead/one lag). Normal zone pressure is 65–75 psi.
592 words, about 3 min