How is Recycle water? Water details part-3

June 27, 2022 admin 0 Comments

How is Recycle water

The role of water in water recycling and environmental conservation

Water re circulation

You have seen before that about 75% of the earth’s surface is covered by water; But most of the water (98 percent) is saline, so that water cannot be used directly for various purposes. The water of rivers, canals and lakes, especially a part of the 1 percent fresh water that we have stored, is constantly being polluted in various ways.

Even the groundwater that we get from wells or tube wells and use for various purposes, from eating to drinking, is becoming contaminated with various chemicals (such as arsenic) and becoming unusable. Although our water resources are plentiful, the amount of usable water is very limited.

So we have to be very economical in using water and also think about how to use the same water over and over again.
Is the recurrence of water in nature?
Yes, happening. We know that in the heat of the sun, the water of the surface oceans, rivers, canals and beels evaporates and enters the atmosphere. At one point the vapor condenses and returns to the earth’s surface in the form of clouds and then rain.
A large part of this rain water falls into rivers, canals, beels and seas and evaporates again and returns in the form of rain. This repetition of water is very important. Can you tell what kind of problem would have happened if this had not happened again?
Without this recurrence there would be no rain, which would make the whole world a desert. There would be severe drought, crop production would be reduced. Rain is a natural recurrence of water. If we collect waste water after use, purify it and use it again, then that too will be a kind of recycling.
Recycle water

The role of water is very important in conserving the environment

Since almost every element and process of the environment depends directly or indirectly on water, so the role of water is essential to sustain the environment. Without water, plants will not grow and crops will not grow. In a word, if there is no water, our existence will be destroyed along with the whole environment.
Recycle water

Quality water requirements:

What do we do when we wake up in the morning? Wash hands and face. Is this work possible without water? No, not possible. Water is essential for everything from washing hands and face to bathing, cooking, washing clothes and, above all, eating.
If this water is not standard then every work will be a problem. For example, if drinking water has an odor or if it is salty, can we eat it? No, I can’t.
The real proof of this is that in many districts in the south-west of our country, because of the salinity of rivers and groundwater, they are not able to drink that water, or even use it for most of their daily lives.
They collect and purify rainwater, then drink it and use it for other purposes. Again, if drinking water is not of good quality, especially if it contains germs, it can lead to serious health problems. Can sea salt water be used in agriculture or industry? No, that doesn’t work either.
This is because seawater contains a lot of salt which erodes and destroys equipment used in industries (such as boilers). Similarly, most of our crops cannot grow in salt water. That means saline water is not suitable for agriculture.

In a word, quality water is needed for everything from industries to agriculture and daily life. Otherwise, on the one hand, human health may be harmed and on the other hand, the country may be severely damaged economically.
Recycle water

Water purification

Surface water contains a variety of harmful chemicals, even life-threatening germs that can cause disease. So the water has to be purified before use. Groundwater is generally free of germs, but we now all know about the presence of a variety of harmful chemicals, such as arsenic.

How water is purified depends on what it is used for. Although very pure water is needed for normal consumption, the land does not need much pure water for irrigation. Usually the processes by which water is purified are filtration, chlorination, boiling, distillation etc. These processes are described below:
Recycle water

Filtration

Filtration is the process of separating solids from a mixture of liquids and solids. Water contains insoluble dust-sand particles and various dirt-waste particles.
They are removed from the water by filtration. To do this the water is flowed through the sand layer, then the insoluble dirt particles in the water get stuck in the sand layer.
In addition to the sand layer, filtration can also be done using very finely made cloth. The filters we use in many of our homes today are filtered with more advanced materials.
Recycle water

Chlorination

If there are pathogens in the water, it must be removed and this is done using a disinfectant. Various disinfectants are used to purify water. One of them is chlorine gas (Cl).
Also used are bleaching powders [(Ca (OCl) Cl]) and some other substances, which contain chlorine and can kill germs. What are the tablets or kits used to purify water during floods in our country?
It is basically sodium hypo chloride (NaOCl). The chlorine in it destroys the germs in the water. In addition to chlorine, the germs in the water can be destroyed with ozone (O3) gas or ultraviolet rays. Water is disinfected using the method.
Recycle water

Explosion

You all know about the boiling of water. Is it possible to disinfect water in this process? Yes, of course possible. When water is boiled very well, the germs present in it are destroyed. The question may be, how long does it take to boil water to disinfect? After boiling for 15-20 minutes, the water is disinfected. This is an easy and affordable process to eat at home.

Petni

When very pure water is required, the water is purified in the distillation process. For example, for making medicines, completely pure water is required for chemical testing in the laboratory.
In this process, water is heated in a container and it is evaporated. After that the vapor is condensed again and pure water is collected. Purified water in this process is less likely to contain other substances.
Recycle water

About nutrition