Backwash - Study guides, Class notes & Summaries

List some lowlands and rivers in the UK correct answers Tray, Clyde, Mersey, Thames, Severn, Wye List some uplands found in the UK correct answers Lake district, Snowdonia, Dartmoor, Pennines, Grampian mountains List some coastlines in the UK correct answers the Holderness forest, Dorset coast Define Landscape correct answers an extensive area of land regarded as being visually and physically distinct define relief correct answers shape of the land whether it is high or low define...

Fetch - ANSWER-Distance over which the wind blew. Wave break ratio - ANSWER-The ratio of the wave height to the wave length cannot be more than 1:7 as this is when a wave breaks. Swash - ANSWER-When a wave breaks, water is washed up the beach and can deposit sediment. Backwash - ANSWER-Water runs back down the beach and is capable of removing sediment from a beach. Constructive Waves - ANSWER-Add sediment to the shallow gradient beach and have high swash and low backwash. Longer waveleng...

Practice Questions Builder Questions and Answers 100% Pass A valve that should be used for throttling is a? Globe Valve what is the acceptable range for residual sodium sulfite in the boiler maintain? 30-70 what is the BTU content of a Gallon of #4? 146,000 what does a zeolite water softener system use as a means of regeneration? Brine what are the steps for a Zeolite rejuvenation water softener process? Backwash, Where is medium temperature liquid found in a refrigeration c...

Class B water Exam Questions and Answers Already Passed Filtration rate for rapid sand filters? 2-6 gpm/ sq ft List the characteristics of the coagulation process? Type of reaction ( physical-chemical) Time required ( reaction complete in seconds) Mixing intensity ( high intensity mixing is required for proper coagulation) Name the advantages of dual and mixed media filters over plain rapid sand filters?? Higher filtration rate and longer filter runs Proper way to re fill rapid sand fi...

CPO Practice Test Questions and Answers Already Passed Which type of filter requires the least amount of water to clean? (A) Diatomaceous (B) Rapid rate sand (C) High rate sand (D) Cartridge (D) Cartridge Cyanuric acid (stabilizer) protects free chlorine (FC) against the effects of: (A) Pathogens like Crypto, Giardia, and Shigella (B) High Total dissolved solids (C) Ultraviolet rays from the sun (D) High PH (C) Ultraviolet rays from the sun An erosion chemical feeder is what ty...

Fetch - Answer Distance over which the wind blew. Wave break ratio - Answer The ratio of the wave height to the wave length cannot be more than 1:7 as this is when a wave breaks. Swash - Answer When a wave breaks, water is washed up the beach and can deposit sediment. Backwash - Answer Water runs back down the beach and is capable of removing sediment from a beach. Constructive Waves - Answer Add sediment to the shallow gradient beach and have high swash and low backwash. L...

AFO (Aquatics Facilitator Operator) Glossary Exam Study Guide with Complete Solutions Latest Updated 2024/2025 Acid - Correct Answer A commonly use chemical compound dosed into swimming pools that releases hydrogen ions in water thereby lowering pH Algae - Correct Answer a simple nuisance plant life that colonizes in water under favorable conditions Alkalinity - Correct Answer A measure of the pH-buffering capacity of water Aluminum Sulfate - Correct Answer Alum; a flocculating agent f...

Economic Migrant - Answer A person who moves for employment opportunities or to be in a better financial situation Refugee - Answer A person who has been forced to leave their country in order to escape war, persecution, or natural disaster Asylum Seekers - Answer People who are seeking international recognition and access into another country Cultural Assimilation - Answer The process whereby a person or a group's language and/or culture come to resemble those of another g...

Certified Pool Operator Final Exam 2024 Expected Questions and Answers Primary job of pool operator - ANSWERS Ensure compliance with local code and laws Provide safe ad clean environment for guests Make sure equipment is properly working RWI stands for - ANSWERS Recreational Water illness How are recreational water illnesses spread - ANSWERS Swallowing water Breathing in mists Coming in contact with contaminated water Recreational Water Illness - ANSWERS illness caused by microorgan...

Acid - ANSWER A commonly use chemical compound dosed into swimming pools that releases hydrogen ions in water thereby lowering pH Algae - ANSWER a simple nuisance plant life that colonizes in water under favorable conditions Alkalinity - ANSWER A measure of the pH-buffering capacity of water Aluminum Sulfate - ANSWER Alum; a flocculating agent frequently used as a supplement in rapid sand filters only! Ammonia (NH3) - ANSWER A chemical compound of hydrogen and nitrogen that combines ...