Frank J. Horgan Filtration Plant :: essays research papers

Frank J. Horgan Filtration readyIntroductionThe Frank J. Horgan Filtration Plant is located Southeast of Toronto onthe shores of Lake Ontario (See map). Its purpose is to provide safe alcoholism wet to our taps by filtering the water. The water is ga at that placed from LakeOntario. This plant has a production capa urban center of 455 one thousand thousand litres per day tosupply the residents of Toronto with drinking water. Its average out production ofdrinking water is 355 million litres per day. It is also the newest filtrationplant in Toronto.History     The Frank J. horgan Filtration Plant was built from 1974 to 1979 onproperty acquired from the city of Scarborough, It opened on May 22,1980. Whenit opened, it was not stimulated Frank J. Horgan Filtration Plant unless was namesEasterly Filtration Plant. This was because the plant was on the eastern side ofToronto. The name seemed appropriate at the time. The name was changed to FrankJ. Horgan Filtration Plant at 1990 by the commissioner of works for MetroToronto. This plant cost about 57 million dollars to construct. About nineteenmajor contractors worked on this plant and were supervised by the Engineeringfirm of James F. Macharen Limited. Although it is the newest plant, it had itsdisasters. Their intake value explode twice between 1980 and 1995 because ofthe extreme pressure and Wight of the water. these incidents cause a shutdown ofthe plant until they could repair it.Production     The Frank J. Horgan Filtration Plant demand only one row materials tooperate, which is water. The plant is right next to lake Ontario, roll upwater to purify. The water enters the plant by means of two 114 and cardinal 182million litres per day pumps, sum 18 meters below sea train and 2960 meters offthe shore. Since the pressure of the water at that depth is so strong, there isno need for any mechanical pumps. They just let pressure and suction to do thejob. The water is now treated with chemicals which are aluminum sulphate (alum),lime and chlorine. Alum is used to stick dirt particles together, to crystallise largeclumps of dirty called "floc". A lot of chlorine is added to the water to killthe bacteria. If we were to drink it, you would die from chlorine poisoning. TheChlorine, by the end of the filtration, drops to a safe level. This is where thealum does its work. Coagulation is basically mixing the alum with the water.This is a achieved by high speed in-line mechanical blenders. Flocculationoccurs right afterwards.