Wastewater Class B Texas Exam Questions And Answers

Wastewater Class B Texas Exam Questions And Answers The name of the State Agency responsible for enforcing pollution control laws in Texas - ANS Texas Commission of Environmental Quality The term pathogenic means - ANS Capable of causing disease The minimum separation between sewer lines and potable water lines is - ANS 9 feet A licensed wastewater operator is a professional - ANS consistently does best job possible, practices personal safety, strives to improve job knowledge, strives to keep the plant and collection system in the best appearance and working order An important step in testing a sample for Total Suspended Solids is - ANS Filtering a sample The Biochemical oxygen Demand (BOD) of a sample is based on - ANS Measuring the dissolved oxygen (DO) used The results of Biochemical Oxygen Demand (BOD) sample taken at a treatment plant tells the operator - ANS How the plant was operating 5 days ago Which of the following are dangerous gasses that are likely to be present in lift stations and manholes? - ANS Natural gas, gasoline fumes, hydrogen sulfide and carbon dioxide A preferred hydraulic method of cleaning sewer lines is - ANS Hydro Jet Cleaner Ways to reduce bad odors coming from a collection system - ANS routinely cleaning slow running or low flow lines, adding chlorine or hydrogen peroxide to the collection system Types of pipe that are commonly used in wastewater collection system - ANS ductile iron, Poly Vinyl Chloride (PVC) Before entering a confined space a worker should - ANS Use approved monitoring device and check for the presence of dangerous gasses, ventilate the space with a blower, wear a safety harness and attach a life line A properly designed and operated primary sedimentation tank should remove _____ percent of incoming BOD - ANS 30-40%