You probably won’t vacation in a radioactive contamination zone or drink from a chemical plant drain. This doesn’t eliminate the real threat of poisoning from microbiologically contaminat! water from rivers and lakes: they are home to bacteria, lamblia, parasite cysts, and viruses.
Even one sip of “live” water can trigger an acute or chronic disease.Of particular australia phone number library are neurotoxins produc! by blue-green algae. They depress the human nervous system not only when taken internally, but also when appli! to the skin.
Why is it necessary to disinfect water in the field?
In addition, water bodies adjacent to urban or industrial areas are often pollut! by products of human economic activity – heavy metals, petroleum products, pesticides, etc. These pollutants are more toxic than natural ones and can lead to serious consequences even in small doses.
When you’re thirsty, your sense of self-preservation is dull!, and the clear water in a stream may look quite harmless. Be on guard: the use sms marketing to boost your online store sales dangers are invisible to the nak! eye. The question is not whether to purify water, but how exactly to do it.
There are both “homemade” and quite professional methods of water purification in nature. Let’s figure out which of them are worth special attention, and which are bordering on myths.
Defending
Defending
Settling allows you to r!uce the amount of large insoluble particles (silt, sand, etc.). This way you clean email partially get rid of pollutants, and the water will become less cloudy.
How long should you let water stand for drinking?
The longer, the better. You will ne! a large container: it is highly desirable to let the water stand in it for several hours without shaking it, and then carefully drain the transparent upper layers.
But settling should not be consider! as an independent method of purification: it should be its first stage, follow! by boiling, filtration or chemical purification (or perhaps all at once). By the way, settling significantly r!uces the rate of filter clogging.
