热污染及其防治

对热污染状况进行了介绍.概括了热污染的危害,包括危害人体健康、影响全球气候变化、污染大气、污染水体、加快水分蒸发、增加能量消耗等.分析了热污染的原因,自然气候的异常变化和人为因素是热污染产生的两大原因.最后提出了几点防治热污染的措施.

Thermal pollution and countermeasures

The present paper introduces the thermal pollution, a kind of environmental pollution. The hazards of the thermal pollution, including hurting the human's health, influencing the global climatic variation change, polluting atmosphere, polluting water, quickening the evaporation of water, increasing the energy consumption, are analyzed. The causes of thermal pollution are discussed. They are the nature climatic variation and the factor of human behavior. Heat discharge by human's production and activity is the main cause of thermal pollution. Greenhouse effect caused by greenhouse gases, such as CO_2, CH_4, N_2O, etc, is the main factor for global warming. Waste heat water, gases, and residue produced by industry production, heat dissipation by home appliances and fuel usage are contributed to the thermal pollution. Industry thermal hazards, including fire, explosion, and poison leakage are also the source of thermal pollution. In the end of the paper, the author puts forward several countermeasures for preventing thermal pollution. They are: (1) developing renewable energy, such as solar energy, wide energy, tide energy, geothermal energy, etc; (2) advancing the level of virescence and increase the area of forest coverage; (3) improving the conversion efficiency and utilization ability and the comprehensive utilization of waste heat; (4) boosting the level of cooling discharge technique and decreasing the waste heat emission; (5) strengthening supervision and management, and setting up relevant laws, regulations and standards.