环境污染是由于自然界和人类活动的结果,直接或间接的把污染物质输入环境,因数量和强度超出环境的净化能力,破坏了环境中原来的成分和状态,使环境质量恶化。工业污染如冶金、造纸、水泥生产产生的废渣和废水,交通污染如汽车、飞机、轮船、火车排放的有害气体,生活中排放的废气 Environmental pollution is the result of natural and human activities, directly or indirectly, the import of pollutants into the environment, because of the quantity and intensity of the purification capacity beyond the environment, undermining the original elements and the state of the environment, deteriorating the quality of the environment. Industrial pollution such as waste and waste water from metallurgy, papermaking and cement production, traffic pollution such as harmful gases emitted from automobiles, airplanes, ships, trains, exhaust emissions from life