Chlorination Study guides, Class notes & Summaries

Chlorination is the most common means of disinfection used today to protect the public's health True As water mains and reservoirs become older, they require less and less maintenance. False Routine water quality monitoring of distribution systems consists of collecting samples at remote locations in the system and testing for chlorine residual and coli forms True Existing contaminant limits mar be modified is EPA's ongoing research reveals new information about the effects of a particul...

What are the two important factors impacting the effectiveness of chlorination? Concentration of chlorine and contact time The treatment process that controls corrosion or scaling is known as what? Stabilization Permanganate reactions are highly dependent on what factor? pH It is hardest to kill the organism that causes what illness? Cryptosporidiosis Disinfection of water wells with free chlorine requires exposure for how long and at what concentration? 12 to 24 hours; 50mg/L

REHS 2023/ 2024 Exam| Questions and Verified Answers| 100% Correct |Grade A (Latest Update) Q: To prepare a solution of 100 mg per liter available chlorine, _____ of 5.25% bleach with one gallon of water should be used. a. 0.5 oz b. 1.0 oz c. 0.33 oz d. 0.25 oz Answer: 0.25 oz Q: The detention time for waste water in a septic tank is recommended to be a. 6 to 12 hours b. 24 to 72 hours c. 1 week d. none of the above Answer: 24 to 72 hours Q: One of the m...

Certified Pool Operator Final Exam 2024 Expected Questions and Answers (Verified Answers) whole range chlorine in a pool: ____ to _____ - ANSWERS 1, 5 ideal range chlorine in a pool: ____ to _____ - ANSWERS 2, 4 whole range chlorine in a spa: ____ to _____ - ANSWERS 2, 10 ideal range chlorine in a spa: ____ to _____ - ANSWERS 3, 5 4 types of solid chlorine - ANSWERS calcium hypochlorite, lithium hypochlorite, trichlor, dichlor liquid chlorine - ANSWERS sodium hypochlorite (NaOCl) ...

CHES Exam Practice Questions and Answers (Graded A)CHES Exam Practice Questions and Answers (Graded A)CHES Exam Practice Questions and Answers (Graded A)CHES Exam Practice Questions and Answers (Graded A) have a discussion period - ANSWER-The HESis concerned about the misuse of alcohol and medication among older adults in the community and plans a program to asses needs, identify resources, and educate staff and older adults about the dangers of misuse and programs to assist in more responsible...

What are the treatment processes in PRELIMINARY Wastewater Treatment? - Answer- Screening Comminution Grit Removal Pre-Aeration Flow Metering / Sampling What are the treatment processes in PRIMARY Wastewater Treatment? - Answer- Sedimentation / Flotation What are the treatment processes in SECONDARY Wastewater Treatment? - Answer- Biological Treatment (ie activated sludge, trickling filters, rotating biological contactor (RBC)) Sedimentation What are the treatment processes in TE...

In Texas, water operator licensing is administer by the? - Answer-TCEQ Which minerals cause hardness in water - Answer-magnesium and calciumT the most importan federal law impacting the water utility industry is - Answer-Safe Drinking Water Act The four water quality standards established for drinking water in the Safe Drinking Water Act are chemical, bacteriological,radiological and - Answer-chemical, bacteriological,radiological and physical. The minimue allowable pressure in the d...

CA REHS Pools 2 Tests for Chlorine Levels - correct answer 1. Orthotuludene- Ortho Test 2. Diethyl Phenylene Diamine- DPD Natural Bathing Place - correct answer Not man-made body of water Lakes, ponds, rivers, ocean beaches Problems Associated with Bathing Places - correct answer Unsanitary surroundings, pollution, water contamination Pool: adequate filtration and chlorination prevent spreading of disease Gastrointestinal disturbances, typhoid, dysentery, leptospirosis, ringworm, o...

If you could choose only one of the following to improve the health of the greatest number of people of all ages, which would you choose? a. Vaccinations b. Chlorination of the water supply c. Antibiotics d. Antivirals e. Mosquito control - correct answer b. Chlorination of the water supply Nearly all living organisms are in symbiotic relationships with other organisms is a consequence of which of the following? a. animal and plant cells require endosymbionts to generate energy b. ...

Water Distribution Chapter 1 Questions and Answers 100% Correct Water Distribution Chapter 1 Questions and Answers 100% Correct Water Distribution Chapter 1 Questions and Answers 100% Correct Water Distribution Chapter 1 Questions and Answers 100% Correct Chlorination is the most common means of disinfection used today to protect the public's health - ANSWER-True As water mains and reservoirs become older, they require less and less maintenance. - ANSWER-False Routine wate...