The River Must Live(1966)

关键词： Alan Pendry 纪录片 短片

比兔TV为您提供1966年由未知主演,Alan Pendry导演的《The River Must Live》/原名《》纪录片 短片 电影在线观看完整版,《The River Must Live》百度云网盘资源以及《The River Must Live》高清蓝光mp4迅雷下载，《The River Must Live》BT下载资源，希望您能喜欢！

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Plot Summary:Although absorbing waste is the river's natural role, discharging it has become an issue following the growth of industry and the modern city. This film explains the function of rivers and explores solutions to issues of river pollution.\n\nWater is a universal raw material required in high volumes for industries including steel production and oil refining. After use, it is discarded as waste and discharged to the nearest river to be diluted and absorbed. Transforming polluted water into a safe substance that is free from taste or smell is an elaborate and costly business.\n\nTowns and cities use millions of gallons of water a day, some of which travel from lakes and reservoirs that are often far from the centres of industry. Some water is distributed underground, although supplies are often extracted faster than rain can replenish them. Consequently, the same water must be used time and again in order to guarantee a consistent supply.\n\nIt is essential to understand how a river absorbs waste and why it sometimes fails. In nature, water is never pure, since it collects traces of minerals and organic matter as it trickles over rocks and soil. The activity of micro-organisms, including fungi and bacteria, which feed on oxygen to multiply, keeps the water clean and healthy, providing rivers with the power to dispose of waste matter.\n\nAs water use increases, more pollution is created, and when it becomes too much for the river to absorb, waste is simply passed on. The bacteria, which feed on waste, multiply at an excessive rate, and the level of oxygen falls dangerously low. If the load of pollution is too heavy, the growth of bacteria becomes overwhelming, exhausting the oxygen supply and devastating the river.\n\nWaste is unavoidable, but by treating it before disposing of it, the load on the river can be reduced. Chemical additives and natural methods can be utilised to make toxic waste harmless and remove organic matter, so that it can be safely discharged to the rivers. Although these processes do not provide pure water, they can reduce pollution so that the river can resume its natural role.