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人体的正常生理过程,日常生活及工农业生产都离不开水,它对于提高人们的生活卫生水平(包括个人卫生与环境卫生),增进健康具有重要意义;但如水质不良或水源受到污染,如人类的活动所产生的生活污水和废弃物,工厂排放的有毒物质的废水,和大量使用农药化肥等,能改变水体的自然环境,破坏“自然界的平衡”。从世界水体污染情况来看,现在已经不是一般生活污水和
The body’s normal physiological processes, daily life and industrial and agricultural production are inseparable from the water, it is to improve people’s living standards (including personal hygiene and environmental health), improve health is of great significance; but if poor water quality or water pollution, such as Domestic sewage and wastes generated by human activities, waste water discharged from factories and the use of pesticides and fertilizers in large quantities can change the natural environment of water bodies and damage the balance of nature. From the perspective of the world’s water pollution, it is no longer a normal domestic sewage