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Gas discharge lamp has become a mainstream lighting products in the market , because of its energy - saving characteristics of a major promotion of energy conservation products , gas discharge lamps mercury as the main filler , is still the mainstream application , at least in the amount of mercury energy-saving lamp mercury content of about 5 mg , 5 mg mercury into the ground will result in 180 tons of water pollution . China is a one-year on a one hundred million energy-saving lamps , metal halide lamps reach tens of millions of these lamps after use , throw chaos Qijiang environmental pollution caused great impact , it will be through the metallic state , organic and inorganic state into the body, and harm the central nervous system, digestive system and kidneys of the respiratory system, skin, blood and eyes, inorganic mercury and organic mercury can cause chromosomal abnormalities and teratogenic effects . Gas discharge lamps mercury pollution problem is now one relates to today as well as future generations healthy one problem , and have pressing needs . Therefore to carry out this research . The research topics include : four categories of substances , mercury , rare earth phosphor , glass and metal substances contained in the gas discharge lamp for process design and equipment selection . The mercury recovery using high temperature purge and gasification combined ; rare earth phosphors recycling using purge high temperature , gasification and extraction ; broken glass recycling technology ; screening technology metal recycling , mercury recycling \Method \purge result, under the temperature conditions to select the optimum temperature and the optimum air flow for different purge time the purge effect experiments . Recommendations for the use of mercury control .
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