The past two years, energy-saving lighting industry to flourish. In particular, meet the energy-saving emission reduction, the East, the market growth is still singing all the way. Energy saving and emission reduction is to reduce the waste of energy and reduce emissions of pollutants (emissions), and efficient lighting products have a significant effect on saving electricity, reducing energy consumption. However, accompanied by, is unable to circumvent the problem of mercury pollution.
According to statistics, 1 energy-saving light bulb containing about 0.5 mg of mercury, if intruded into the ground, will cause about 180 tons of water pollution. At present, most of the emerging technologies can only reduce the mercury content of each bulb, can not completely solve the problem of mercury pollution. And more attention has been focused on LED technology and natural light technology, as an alternative, they will be the best balance of mercury pollution and low energy consumption?
Mercury pollution is difficult to avoid
According to the State Council issued a comprehensive energy-saving emission reduction work program, the development and Reform Commission to promote efficient lighting products through financial subsidies 150 million. According to the relevant departments predict that after the implementation of this plan, the country can save a total of 29 billion kwh a year, less emissions of carbon dioxide, 29 million tons, sulfur dioxide, 290 thousand tons.
The effect is obvious to all, but at present energy saving lamp technology can not avoid the mercury pollution has been unable to solve the problem. The National Energy Research Institute expert Liu Hong has analyzed, 1 energy-saving lamp tube contains an average of 0.5 milligrams of mercury, is a small number of brand-name products can be about 0.25 mg, and 1 mg of mercury in groundwater will cause about 360 tons of water pollution. This means that if the promotion of 150 million energy-saving lamps, it is equal to the country to transport nearly 75 million mg of mercury, in theory, can pollute the water resources of more than 100 million tons, while the world's fresh water is only about 3000 tons of fresh water.
Johns Hopkins University professor of environmental health, "environment" magazine editor ELlen Silbergeld wrote that, ultimately, any lighting, including energy saving fluorescent bulbs are broken or burned out, "this is not a huge source of mercury pollution directly into the groundwater. In addition, some of the mercury released from landfills will enter the atmosphere in the form of methyl mercury vapor, which is more likely to enter the food chain than the direct release of inorganic mercury from broken bulbs or coal-fired power plants. "
Effective recovery can reduce pollution
In order to energy-saving environmental protection, but also is not conducive to environmental protection, "fish", where is the balance?
At present, this problem has been caused by the relevant experts and relevant government departments to the attention of the leadership, in foreign countries, the United States of California, the most stringent environmental standards already through the state legislature, since 2006 to ban the use of waste fluorescent bulbs when the general garbage disposal.
NPC and CPPCC during this year, the Beijing municipal CPPCC, vice chairman of the Beijing municipal Party committee Li Huanxi a report entitled "on the establishment of energy-saving lamp recycling waste treatment system as soon as possible proposal" proposal submitted to the relevant departments. The proposal pointed out that "the current recovery process in energy-saving lamp, there are still some loopholes to be filled, called on the government departments as soon as possible to improve the recovery mechanism, and consumer education, placing the rational use of energy-saving lamps, to reduce environmental pollution and destruction. "
In addition, lighting equipment manufacturers are also actively seeking solutions. In December 25th, the domestic leading enterprises NVC lighting and the Guangzhou Asian Games Organizing Committee held a press conference, officially signed for the Guangzhou Asian Games lighting products supplier. As one of the largest domestic energy-saving lamp manufacturer, a pollution problem of NVC President Wu Changjiang for energy-saving lamps, "we can do is through continuous research and development, to enhance the technical capacity, the mercury content of products to a minimum. He also revealed that the NVC will start energy-saving lamp recycling program, as long as the user needs, no matter what brand of energy-saving lamps NVC can be recycled. He did not give a clear answer as to how to deal with the pollution.
Energy saving next stop, LED and natural light
Can not completely solve the problem of mercury pollution, looking for alternatives is naturally the next step in the development of the entire lighting industry.
In this process, the growing LED industry is regarded as the next focus. According to the data show that the current energy-saving lamp life of 2500-5000 hours, and as the replacement of the LED lamp can reach 50000-100000 hours, the power consumption of incandescent, neon 1/10.
Data statistics, in accordance with the current growth rate, by 2010, the country's LED industry output value will be more than 150 billion yuan. From a national point of view, LED products, especially high brightness LED product applications have just started. However, due to the LED material than energy-saving lamps further, will not pollute the environment, so experts estimate that the LED market will rise in full swing.
In addition to LED, the full use of natural light is a major direction of technological evolution. As early as 3 years ago, designers of the Massachusetts Institute of technology began to evaluate architectural lighting in many ways. There are two kinds of heliodon and sunshine about these ways, namely automatic manual operation and portable type models launched. These two heliodon can simulate different periods throughout the year or all day long sunlight and use the camera to detect building model in daylight, according to these results, designers and architects can better determine their model to control sunlight penetration is appropriate, and shelter, sunlight filtering and sunshine strong reflection effect. But compared to LED, this is more
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