- “我错了我的假设对自然水蒸馏(即是雨水不像它应该清洁理论上)?”
一般来说,雨水很干净。这不是一个问题。另外,我们对待地下水和水库河/湖/水,所以我们很容易把雨水。你真的不能错过的是地下水和水库河/湖/只是雨水。水从雨水很多。用水时,人类正在水更快的地面比地面可以收集它。现在,如果地面不能收集水足够快,和地面覆盖了几乎所有的土地(建筑物、水体的除外),那么我们人类不能几乎收集了比地面雨水。所以,只要我们用比地上地下水可以“收集”由于降雨,我们会耗尽水。现在,我们有一些技术方法可以收集水比地面(例如,不让它消失,不要让它流失到未使用的河流)。然而,没有办法我们可以尽可能多的水所有的土地在地球上收集!
“我们为什么不收集雨水(至少对于植物浇水,如果它不适合饮用)?”We do collect rainwater. We normally collect rainwater when it is easier to collect it locally than to get it from where it naturally flows to. If you count damns, we hold back water and collect water that way so it doesn't flow too quickly to the ocean, where it becomes too salty to drink or use for irrigation. Some people also collect rainwater from their roof, while others just leave out an open barrel (that's not much of surface area for collecting rain).
“理论上:在一个动物消耗一定数量的水,说一个玻璃,要多长时间,因为动物在地面上撒尿,水通过水循环和成为准备再喝吗?”That depends on if the urine is going eventually into a river, shallow groundwater only 50 feet (or less), or a subterranean aquifer a few thousand feet down. It can evaporate immediately from the ground or flow into a river and evaporate the same day. On the other hand, some groundwater percolates far down into the Earth. When we remove water from those, we say those aquifers "recharge" when more water moves into them.
著名的Oglalla含水层充电的速度每年0.85英寸。也就是说,如果我们把它画下来一年一英寸,它甚至不会填满在明年。需要多长时间的水从表面到一个特定的水平影响孔隙度和水的数量已经在岩石中。水不能流时被水,对吧?同时,水也横向以及纵向移动。所以,问需要多长时间水从X到Y正下方甚至认为水遵循这条道路。它可能是Y z,所以只有从一个遥远的位置,我将把“多久”问题的一部分。我将增加,然而,一些地下水成千上万年。有12000英寸每千英尺。如果一个含水层在海面下3000英尺,它是36000英寸。 If the aquifer recharges at 1 in/yr, then the average flow down is at that rate. Going down through the rock at 1 in/yr would mean the average time from surface to aquifer would be 36,000 years. Again, the situation is more complex than that, but that's how you can think about it. :-)