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The barrel water safety of qualified 77% of rate 4 greatest problems threat Guangdong(A)

provenance:Gz Yibao

Date Added:2006-03-17

Sir ZHANG of Guangzhou meets thus a strange affair recently:A pail of water discovers a wall suddenly at the time of drinking to still leave 1/5 up hang one layer green weed! River does in the river lake appear how can in the barrel water?The province science hospital microorganism graduate school researcher gold flower of Guangdong tells the reporter:In recent years, river the river lake pollution is gradually serious, pollution spreads to provide the people in the barrel water that drink, this is not strange.She say that cause the barrel water the polluting and main reason contain 2:While is a headwaters, the body of water implies the germ, produce medium did not kill to put out completely;Two was polluted two times, the empty bucket or Water Drinking Machines of the recovery drive pollution, disinfect the ill success while using again, also will pollute the new pail of water.

Introduce according to the gold flower, the germ has no the place not at, its biggest characteristics is under the feat air and sunlights, can carry out the photo-synthesis, breeding thus and in great quantities, formation pollution.Therefore say from the headwaters,pollutes the main emergence in the spring water.The spring water is take in river, lake or more shallow groundwaters, the body parts of of the headwaters water in air and sunlight, feat existence.Opposite but speech, the mineral spring comes from several mineral wells with deep 100 meters, the headwaters does not contain the germ under the well;Although the purified water also is draw from in the earth's surface water, do away with the depth processing of the miscellaneous quality to compare thoroughly, also will compare the spring water the safety is some.

Speak of the processing toward the germ, the gold flower introduction say, to drinking water the germ count of allow the index sign, the whole world didn't¡ãyet unify the standard currently.The quality section falls to count to the barrel water germs of make selective check, also generally is aim at the fungi etc. of germs is total to fall the number, did not sign germ alone the item carry on the examination.

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