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Swimming Pools |
Financial aspects of swimming pool ownership
Pool maintenance and Responsibilities
Swimming Pool Glossary
Swimming Pool Glossary |
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Defined below are the words and terms you'll need to know as a swimming pool owner. This words are also often used on this wesite. |
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| Acid demand: amount of acid required to lower pH and alkalinity of swimming pool water to correct level. Algae: minute plant life growing in water in the presence of sunlight and carbon dioxide. Algaecide: chemical that kills algae. Algistat: chemical that inhibits algae growth. Alkalinity: amount of bicarbonate, carbonate, or hydroxide compounds in water. Ammonia: chemical compound of nitrogen and hydrogen that combines with free chlorine in swimming pool watr to form chloramine; chloramine causes burning eyes, skin irritation, and chlorine odor. Available chlorine: free or combined chlorine used to disinfect swimming pool water. Backfilling: filling space between swimming pool shell and sides of excavation with dirt. Backwashing: cleaning swimming pool filter by reversing water flow. Bacteria: microscopic organisms not always conductive to a healthful swimming pool. Breakpoint: time when increasing level of chlorine in swimming pool water kills germs and bacteria by oxidizing all organic matter. Calcium hypochlorite: chemical compound of calcium and chlorine (also called dry chlorine) used to disinfect water; release 70 percent of its weight as available chlorine. Cartridge: disposable element containing filtering media and used in some swimming pool filters. Chloramine: see Ammonia. Chlorine demand: amount of chlorine needed to oxidize all organic material in swimming pool water at a given moment or over a period of time. Chlorine residual: amount of chlorine remaining in swimming pool water after chlorine demand has been satisfied; oxidizes any additional organic material entering the swimming pool. |
Chlorinated isocyanurate: chlorine and cyanuric acid compound used to maintain chlorine level in swimming pool water and prevent chlorine from dissipating in sunlight. See Conditioned water. Coagulant: chemical compound, usually alum, used in swimming pool water to gather and precipitate out suspended matter. See Floc. Combined chlorine: chlorine combined with other substances; though available to disinfect swimming pool water, chlorine in this form is less effective than free chlorine. Conditioned water: water treated with cyanuric acid or chlorinated isocyanurate to prevent chlorine from dissipating in sunlight. Corrosion: chemical reaction that causes deterioration of metal. Cyanuric acid: acid used in swimming pool water to prevent chlorine loss. Diatomaceous earth (D.E.): sedimentary rock composed of microscopic skeletons of diatoms. Diatomaceous earth (D.E.) filter: swimming pool filter using D.E. As filtering medium. Disinfectant: chemical (also called bacteriacide) used to destroy germs and bacteria. Electrolysis: flow of electrical current through acidic liquid or damp earth; corrodes metals. Filter: device for removing suspended particles from swimming pool water. Filter cycle: time of filter operation between backwashes. Filter media: fine-grain materials in filter trap matter suspended in swimming pool water. Filter septa: elements in D.E. filter on which D.E. is suspended. Floc: gel-like substance formed when coagulant, usually alum combines with suspended alkaline matter in swimming pool water and precipitates out. Hardness: quantity of dissolved minerals, such as calcium and magnesium, in swimming pool water. Muriatic acid: a dilute solution of hydrochloric acid used to lower alkalinity and clean masonry surfaces. |
pH: measure of acidity or alkalinity of water; pH of 7 is neutral, below 7 is acidic, and above 7 alkaline. p p m: parts per million (in a swimming pool, parts of a chemical or mineral per million parts of water, by weight. Precipitate: insoluble compound formed when chlorine or alum added to swimming pool water reacts with other chemicals or minerals. Residual: see Chlorine residual. Sand filter: swimming pool filter using sand as filtration system. Skimmer weir: part of skimmer that adjusts to small changes in water level and assures continuous flow of water into skimmers. Soda ash: sodium carbonate used to raise alkalinity of swimming pool water. Sodium bicarbonate: baking soda used to raise total alkalinity of swimming pool water with little change in pH. Sodium bisulfate: dry acid that, mixed with water, lowers pH and total alkalinity of swimming pool water. Sodium hypochlorite: liquid containing 12 to 15 percent available chlorine used to disinfect swimming pool water. Strainer basket: device in skimmer and input side of pump used to catch large pieces of debris in swimming pool water. Superchlorination: heavy dose of chlorine added to swimming pool water to burn out nitrogen compounds when bacteria, algae, or ammonia build-up cannot be reduced by normal treatment. Swimming load: number of people using the swimming pool at a given time. Total alkalinity: amount of alkali salts in the swimming pool water. Turbidity: degree to which swimming pool water is clouded by suspended matter. Turnover rate: number of times all the swimming pool water passes through filter in a given time period. |
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