Primary clarifiers - Study guides, Class notes & Summaries

Wastewater Treatment Operator Certification Test #3 Questions And Answers |Complete Solutions The typical suspended solids removal rate in the primary clarifier is 5 to 10% True or False - answerFalse (v.1 pg 129) Over-greasing a pump motor can lead to damage. True or False - answerTrue (v.2 pg 404) A healthy digester gas consists mostly of hydrogen sulfide. True or False - answerFalse (v.2 pg 158) Coliform results are reported as MPN/100 ml True or False - answerTrue (v.2 pg 556) Inc...

Wastewater Practice exam all possible Questions and Answers 2024/2025 Complete When organic wastes are discharged to receiving waters, O2 is depleted by _____. bacteria Hydrogen sulfide gives off an odor similar to____. rotten eggs 3 diseases potentially carried by wastewater are _____. typhoid fever, disentery, cholera Immediate first aid for butrns is to ____. flood with cold water What most likely causes an electic motor failure? mopisture What mixed liquor characteristics indi...

Wastewater Treatment Operator Certification Test #3 Questions And Answers |Complete Solutions The typical suspended solids removal rate in the primary clarifier is 5 to 10% True or False - answerFalse (v.1 pg 129) Over-greasing a pump motor can lead to damage. True or False - answerTrue (v.2 pg 404) A healthy digester gas consists mostly of hydrogen sulfide. True or False - answerFalse (v.2 pg 158) Coliform results are reported as MPN/100 ml True or False - answerTrue (v.2 pg 556) Inc...

Primary Treatment Correct Answer consists of temporarily holding the sewage in a basin where heavy solids can settle to the bottom while oil, grease and lighter solids float to the surface. The settled and floating materials are removed and the remaining liquid may be discharged or subjected to secondary treatment. Secondary treatment Correct Answer removes dissolved and suspended biological matter. Secondary treatment is typically performed by indigenous, water-borne micro-organisms in a man...

Name and define the stages of waste water treatment. - Answer-1. Preliminary treatment Screening Shredding Grit removal Oil/grease flotation removal 2. Primary treatment Removal of easily settleable solids/organic matter Removal of floating scum Sedimentation 3. Secondary treatment Removal of biodegradable, soluble organics and suspended solids Biological treatment (activated sludge process), trickling filters/bio towers, lagoons Sedimentation Disinfection 4. Tertiary treat...

wastewater grade 1 exam Treatment updated 20-24/2025 domestic wastewater Comes from schools, homes, hospitals, businesses, light industrial facilities. population equivalents 100 lbs wastewater per day, .2 lbs TSS/day, .17 BOD/day industrial wastewater Comes from industries. Compatible wastes can be processed by the plant. Incompatible wastes are toxic to the plant. sanitary wastewater The combined domestic and industrial waste waters from community. storm water Water t...

Sanitarian Test Study Guide Part 3 Exam With Complete Solutions Primary headworks of a wastewater treatment plant: - answerBar screens, primary settling basins (clarifiers) A pH of 0 to 7 is what? - answerAcidic A pH of 7 is? - answerNeutral A pH of 7 to 14 is? - answerBasic If there is color in water, in order to remove it, it must be? - answerA suspension Is rabies a bacteria or virus? - answerVirus How does rabies infect a human? - answerThrough their central nervous system What ani...

What is TCEQ doing to control "point source" pollution of the Texas waterways? *Permitting of domestic wastewater plants *Permitting of industrial wastewater plants Describe proper design of force main wastewater lines. Minimum two fps velocity with the smallest pump operating alone. Minimum four inch diameter pipe with 150 psi rating. What is Standard Dimension Ratio? Ratio of outside pipe diameter (OD) to wall thickness (PVC) Describe proper design of gravity wastewa...

Primary headworks of a wastewater treatment plant: Bar screens, primary settling basins (clarifiers) A pH of 0 to 7 is what? Acidic A pH of 7 is? Neutral A pH of 7 to 14 is? Basic If there is color in water, in order to remove it, it must be? A suspension Is rabies a bacteria or virus? Virus How does rabies infect a human? Through their central nervous system What animals are safe from rabies? rodents and lagomorphs (non mammalians) ...

Sanitarian Test Study Guide Part 3 Exam With Complete Solutions Primary headworks of a wastewater treatment plant: - answerBar screens, primary settling basins (clarifiers) A pH of 0 to 7 is what? - answerAcidic A pH of 7 is? - answerNeutral A pH of 7 to 14 is? - answerBasic If there is color in water, in order to remove it, it must be? - answerA suspension Is rabies a bacteria or virus? - answerVirus How does rabies infect a human? - answerThrough their central nervous system What ani...