By William Lauer, Fred Sanchez
This box consultant presents a convenient, functional how-to booklet for consuming water group of workers interested in disinfection tactics. The publication provides water operators universal difficulties and offers recommendations on disinfection tactics. assurance contains chapters on chlorination chemical compounds, disinfection of latest pipelines, pipe line maintenance and garage amenities and hugely chlorinated water; plus underwater inspections of garage amenities and their disinfection concerns; a bankruptcy on pipeline chlorination simplified and indexes on calculations of tank volumes and pipleline non-stop feed technique
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Extra info for Disinfection of Pipelines and Water Storage Facilities
Hose ¾-in. Nozzle Isolation Valve Fresh Water Source Gate Valve Courtesy Nicole Peschel Figure 3-11 Temporary service line chlorination example nuisance that may impede vehicular traffic and cause hazards for pedestrians. Many other industrialized countries do not provide temporary service lines. Instead they select alternatives such as supplying bottled water or locating water trucks in the area. fm Page 26 Wednesday, April 18, 2007 4:21 PM 26 Disinfection of Pipelines and Storage Facilities Field Guide consider lengthy interruptions in water service as acceptable.
Table Tamer Ops Tip This information is used to calculate the volume of water within a pipeline and the amount needed for three water changes. Example: 500 ft of 6-in. (152-mm) pipe needs 440 gal for 100 ft (from the table), so for 500 ft, 2,200 gallons are needed. 5 m) of pipe length flush for about 2 min. fm Page 19 Wednesday, April 18, 2007 4:21 PM Disinfection of Pipelines 19 Figure 3-3 Trajectory discharge method of flow estimation and illustration of combination blowoff and sampling tap this method for common size pipelines and other standard conditions.
Retain the chlorinated water in the main for at least 24 hr. Operate valves and hydrants connected to the treated section to ensure that they are also disinfected. At the end of the 24-hr holding period, the water within the treated main must have a chlorine residual of at least 10 mg/L free chlorine. A solution-feed, vacuum-operated chlorinator (Figure 3-14) and booster pump may be used for chlorine application. Gasoline or electrically powered chemical-feed pumps may be used to inject hypochlorite solutions.