Posted on Mar 9, 2022 232
Rainwater: pros and cons
In ancient times, when there were no cars or large factories on Earth, people used to collect water after it rained and used it for everything from cooking soup to laundry. Not only that, but rainwater was beneficial. Today we can drink water from heaven or should we abstain? Let’s try to find out.
Today, the chief enemies of usable rainwater - emitting carbon monoxide (plus sulfur and nitrogen oxides) cars, and factories that supply the atmosphere with dangerous compounds of lead, arsenic and mercury. Agricultural facilities are sparingly rewarding the air with toxic chemicals, ammonia, pesticides, and carbon disulfide.
Residents of cities surrounded by factories, and monumental agricultural facilities are advised by chemists not to collect rainwater. If you are lucky enough to live in an eco-friendly area of the planet, you can try, but at your own risk.
Where does the rain come from? Why is the water dirtier in some areas and cleaner in others?
Moisture evaporates from the Earth’s surface and is sent into the atmosphere. There it accumulates as clouds, which migrate, and then it rains down on the ground, sometimes in an unfamiliar area than where the water evaporated.
Clouds embark on a long journey above the earth, and with them comes a variety of substances, from dust to chemical elements.
Since the volumes of clouds are very large (tens of kilometers per cube), even a single cloud can contain hundreds of tons of water as droplets or ice crystals. Enormous volumes of water are continuously carried by air currents over the Earth.
Interestingly, a single raindrop on its way to earth washes the air and absorbs the impurities it contains. One liter of rainwater absorbs impurities from three hundred thousand liters of air. Thus, the chemical composition of rainwater depends on the evaporation medium and the area on which the precipitation falls.
“Acid rain” and its consequences
Industrial emissions are generous in the release of sulfur and nitrogen compounds. Interacting with water, these compounds gain the status of acids and fall to the ground - that’s your simplified definition of acid rain.
Such rains cause damage to water bodies - their acidity increases, commercial fish are killed. Acid rain? Expect the soil to become less fertile, even if it’s not immediately noticeable.
The term “acid rain” originated in England over a century ago. In those days, the acidity of the rain was not yet so clear. But today such manifestations are really worth being wary of.
But what about the beneficial properties of rainwater?
In the distant past, witch doctors collected rainwater and used it for rejuvenation. Food cooked with rainwater tasted better, and hair washed with it was more beautiful, thicker and healthier.
What is the secret of rainwater?
It’s simple-it’s soft. In addition, it is ionized in the upper layers of the atmosphere.
Cosmetologists strongly recommend washing your face with clean rainwater - it’s better at retaining the water balance of your skin than tap water and helps keep moisture longer.
Walking in the rain helps you relax, relieve stress after a hard day, gain energy from nature.
Undoubtedly, there is still relatively clean rain water on Earth, but it is found in clean and almost unaffected by civilization areas - in the forests and mountains. The farther from the city, the cleaner the rain.