What causes turbidity - Study guides, Class notes & Summaries

hat the 4 stages of the Chlorine Demand Curve chart? - Stage 1: No residual is formed because inorganic demand destroys the chlorine. (Flat Line) Stage 2: Monochloramines are formed as chlorine combines with organics containing ammonia (rising curve). The chlorine to ammonia weight ratio at this point is 5:1. Combined and total residual increases, chloro-organics are formed. Stage 3: Increasing chlorine dosage (failing curve) to a chlorine/ammonia weight ratio of 7.6:1 destroys chloramines...

If you experience pain in the ear during descent: A - Place a finger in the ear canal and gently massage the ear until the pain ceases B - Stop the descent and ascend until the pain stops C - Continue the descent while gently exhaling into the mask D - Abort the dive - Answer- B - Stop the descent and ascend until the pain stops Earplugs: A - Protect against cold B - Protect the ears from squeeze C - Aid equalization of the middle ear D - Should never be worn while div...

b) Kilopascals What units are used to measure water pressure? a) Kilowatts b) Kilopascals c) Horsepower d) Head units a) Exhaust fan Which of the following is NOT an example of PPE (Personal Protective Equipment)? a) Exhaust fan b) SCBA c) Face shield d) Traffic vest d) Be the operator with overall operational responsibility of the system Which of the following are operators-in-training NOT allowed to do? a) There are no restrictions on the duties of an operator-i...

Earplugs A-Aid equalization of the middle of the ear B- Protect against cold C-Should never be worn while diving D-Protect ears from squeeze - Answer- C The first symptom of a sinus squeeze is usually: A- a dull pain deep within the head B- a sharp pain at the base of the neck C- a crushing pain high in the chest D- a sharp pain above the eyes - Answer- D One atmosphere of pressure is defined as: A-Each 34 ft of depth in freshwater B-Each 33 ft of depth in seawater C-1 ata ...

BIOD 171 Portage Learning Final EXAM Questions and Answers 100%Correct/Exam 1-7 2023/2024 UpdatePortage Learning BIOD 171 Final EXAM Questions and Answers 100%Correct/Exam 1-7 2023/2024 Update True or False: A virus is considered a microorganism. False. Viruses are not living and as such are not considered microorganisms. Viruses can, however, be classified as microbes, a more general term that includes microorganisms and viruses. 1. What is the smallest biological unit of life? A cell. ...

Water Treatment Plant Operator Exam Questions With Answers Latest Updated 2024/2025 (Graded A+) What is used as a chemical coagulant? - Answer Alum The correct order of treatment in a surface water plant is... - Answer Coagulation, Flocculation, Sedimentation and Filtration In determining the proper dosage of alum, the most useful test is the____________ test. - Answer Jar If sludge is not continually removed from the sedimentation basin, its accumulation results in? - Answer Turbidity Th...

Why is water an important resource? What are some of the most important human uses of water? - Answer-- Water in the earth's atmosphere buffers temperature. This property of water makes life on earth possible. - Humans drink water, use it to clean themselves and other things we use, and use it to grow crops What is the name of the aquifer located on the Southern Great Plains that provides much of the drinking and irrigation water for our area? - Answer-Ogallala Aquifer What is the cash cr...

Why is water an important resource? What are some of the most important human uses of water? - Answer-- Water in the earth's atmosphere buffers temperature. This property of water makes life on earth possible. - Humans drink water, use it to clean themselves and other things we use, and use it to grow crops What is the name of the aquifer located on the Southern Great Plains that provides much of the drinking and irrigation water for our area? - Answer-Ogallala Aquifer What is the cash cr...

What is the methane content in a properly operation anaerobic digester? A) 30 to 35% by volume B) 1 to 2% by volume C) 65 to 70% by volume D) 15 to 20% by volume (Ans- C) 65 to 70% by volume (v.2 pg 158) What will the addition of chlorine gas do to the pH of wastewater? A) Moderately increase pH B) pH will not be affected C) Significantly increase the pH D) Decrease the pH (Ans- D) Decrease the pH (v.1 pg 349-350) What is the purpose of a Parshall flume? A) measure turb...

Water Treatment Plant Operator Exam Questions With Answers Latest Updated 2024/2025 (Graded A+) What is used as a chemical coagulant? - Answer Alum The correct order of treatment in a surface water plant is... - Answer Coagulation, Flocculation, Sedimentation and Filtration In determining the proper dosage of alum, the most useful test is the____________ test. - Answer Jar If sludge is not continually removed from the sedimentation basin, its accumulation results in? - Answer Turbidity Th...