CLASS_4 SCI CHP 10 WATER AND ITS PROPERTIES PART 2

The Science of Water Purification: A Comprehensive Guide

Water purification is an essential process that involves removing impurities and contaminants from water to make it safe for drinking, cooking, and other uses. In this article, we will explore the different methods of water purification and discuss the importance of each step in the process.

**What Happens When Water Meets Air?**

When water comes into contact with air, several processes occur that affect its purity. One of the first things to happen is that tiny particles of dust and other impurities settle to the bottom of a container, leaving clear water on top. This process is known as sedimentation. The settled particles can be removed through a process called decantation, where the clear water is poured off from the top of the container, leaving the impurities behind.

**Methods of Water Purification**

There are several methods used to purify water, each with its own strengths and weaknesses. One of the fastest and most effective methods is boiling. Boiling water kills bacteria, viruses, and other microorganisms that can cause illness. When water is boiled, the heat denatures the proteins and disrupts the cell membranes of these microorganisms, making it impossible for them to survive.

Another method used to purify water is adding chemicals such as chlorine and iodine. These chemicals work by killing bacteria and viruses, and also help to remove other impurities from the water. Chlorine, in particular, is commonly used in water treatment plants because it is effective against a wide range of pathogens.

**Water Supply Systems**

In many parts of the world, people rely on municipal water supply systems to provide them with clean drinking water. These systems involve collecting water from rivers, lakes, and reservoirs, and then treating it for consumption. The first step in this process is sedimentation and decantation, where impurities are removed from the water through settling and filtering.

After the water has been purified, it is distributed to homes and businesses through a network of pipes. This process involves adding chemicals such as chlorine to kill bacteria and viruses, and also helps to remove other impurities from the water.

**Drinking Water: A Nutrient-Rich Resource**

Despite its importance, drinking water is often overlooked as a nutrient-rich resource. In fact, only about 3% of the Earth's water is fresh and potable. The remaining 97% is saltwater, which is not suitable for human consumption.

However, there are ways to obtain clean drinking water without relying on municipal supplies. One option is to distill water, which involves boiling it and then collecting the condensed steam as liquid water. This method can be effective in removing impurities from water, but it also uses energy and can produce a small amount of waste.

**Water Treatment: A Process of Removing Impurities**

Water treatment is an essential process that involves removing impurities and contaminants from water to make it safe for drinking. The process typically involves several steps, including sedimentation and decantation, filtration, disinfection, and storage.

The first step in the process is sedimentation and decantation, where impurities are removed from the water through settling and filtering. After this step, the water is filtered to remove any remaining impurities. Disinfection involves adding chemicals such as chlorine or iodine to kill bacteria and viruses, and also helps to remove other impurities from the water.

**Filtration: A Method of Removing Impurities**

Filtration is an important method used in water treatment to remove impurities from water. The process typically involves passing the water through a filter paper or membrane that traps particles and contaminants, leaving clean water on the other side.

There are several types of filters used in water treatment, including activated carbon filters, reverse osmosis filters, and ceramic filters. Each type of filter has its own strengths and weaknesses, but they all share the common goal of removing impurities from water to make it safe for drinking.

**The Importance of Water Purification**

Water purification is essential for human health and well-being. Without access to clean drinking water, people are vulnerable to a range of illnesses and diseases that can be caused by contaminated water.

In addition to its importance for human health, water purification also has economic benefits. When water is purified, it becomes safe for use in agriculture, industry, and other sectors, which can help to boost economic growth and development.

**Conclusion**

Water purification is an essential process that involves removing impurities and contaminants from water to make it safe for drinking. There are several methods used to purify water, each with its own strengths and weaknesses. Whether it's boiling, adding chemicals, or filtration, the goal of water purification is always the same: to provide clean and safe drinking water for all.

"WEBVTTKind: captionsLanguage: ennow in second part we discuss the other processes the second processes decantation okay this process is after sedimentation sea sediments can collect at the bottom of the container sediments means either insoluble impurities like sand pebbles and great mud these are the sediments okay so we can then pour we can then pour out clear water carefully without disturbing the sediments this process is called as a decantation many times some sediments also get poured out when decantation hands filtration is a better process to remove insoluble impurities okay means Joe apnea be container leotta just may happen a dirty water code our authority came those making a graph whose water Co disturb nature okay 15 to 20 minutes those major impurities on geebo bottom piece I tried all no Jangi take it or OPA do clean water hoga ausco hump or out curling get those free container me ticket so that process is known as a decantation de but is a decantation pouring out a clean water from the sedimentation that process is called as a decantation okay when we doing the Deacon tation some of the impurities are also entered in the water okay so that small impurities is removed with the help of a filtration process in filtration process we in filtration process we use a filter pop paper inside the funnel okay and then we pass out that decantation water through the filter paper and the impurities that is stuck on the filter paper and the pure water is collected inside the beaker okay so these are the three methods that we use to that we use to remove that insoluble impurities from the water first is sedimentation second is decantation and the third is filtration okay next is boiling and distillation boiling and distillation these are the two methods that is used for the removal of soluble impurities okay for example then we mix the salt inside the water when we mix the sugar inside the water so these are the some materials that we cannot separate with the help of sedimentation decantation and filtration so here we can use a boiling and a distillation process first is boiling soluble substances such as salt and sugar can be easily separated from water by the process of boiling because through the process of boiling water goes out with the water vapor than white boiling and the rest of the salt and sugar is in the beaker okay now but in a first demerit of boiling is that there is a lot of wastage of water while boiling okay so second process that we can use its distillation in distillation water is boiled and it changes to water and rises up all the impurities are left behind water vapor is then collected by condensation here you can see a picture of a distillation ya PKA a Kappa B Kura Takeda's main purity is and salt water key impurities and it's comlink ikea heat up kiya Jotham heat cut they avoid rocoto obviously escape water vapors form hungry ticket Jabez keep water vapor forms hungry to you humping you Cooper Joker what trick is make electro there you drop copper funnel Bana we're taking a pic yeonggi water vapors collector on it or in water vapors go home kiss me trap curl it a condenser me and through the help of condenser these water vapors are going in the distilled that floods okay and that water that is collected inside the the funnel is known as I distilled water and it is a purest form of water and in this process there is a no wastage of water okay the condensed vapor is called distilled water it is pure water and does not contain salt and other impurities they still this Viper than boiling because water does not get wasted in this process while separating soluble impurities distilled distillation give us the purest form of water is called distilled water and it has no germs and impurities okay now we discuss time please firstly match the column okay iron bar iron bar is a heavier object so it sink inside the water bodies next is salt so it is the soluble impurities sand is an insoluble impurities alum helping in the process of loading and distilled a distillation is helping us in the in the purification of water so next is true/false and object to sink then it is held up by water its cometh Lipka here does happen tip ask we have your object that tickles now apneas have your object KO panic and the deluded chicken does he up Kui batata some glass little ticket whose me Apple whoa pebbles ko dath it out ticket those make a Pawnee Baja Rinella Giga ticket though died processes piled up by water means Joby object to sink Ikaruga pani me who spoke I have water quito volume had that container may increase cardiga so the answer is true all solid objects the float in water no all Sol your solid objects sink in water we get water only from oceans no we get water from many water bodies like oceans ponds rivers in the etc sedimentation is a very fast process Falls sedimentation is a very slow process okay we make it fast by adding up a laminate okay 50s boiling is a better process because water does not get wasted that is a false in boiling there is a vestige of water okay next is drinking water drinking water is also known as a sorry drinking water is also known as a part above water okay quite above water means that is useful for drinking and fit for drinking first is boiling means these are the some processes how we make a water fit for drinking okay as we discussed previous builing boiling is the fastest method of purifying water it kills the germs that is present inside the water while boiling okay add some chemicals for example chlorine and iodine it has or it helps to kill the germs that is present inside the water and it also purify the water okay next is water supply water supply here we discuss the water wastewater treatment okay means Jessi up tied her make will be panna cotta chicken water so that from where that water is coming and how that water is coming to our homes firstly what we collect water from a river spawns lakes also okay but that water are taking a lot of impurities inside it so in the purification these after the purification of that water through the waterworks we can get a purified water inside our homes okay so here we discuss how the water is purified okay so firstly first point is water is collected in larger is wire we're sedimentation and decantation take place to let impurities settle down the see happy happy first to find a crew screening ticket screening Macau tell sedimentation or Thea take a sedimentation make Yahoo Vasa Joe Ponyo ausco Homme I'm disturbed 20 minutes the crack there means deathly be impurities on give a settle down ho Tang Jia Yu per se Hangzhou clean water else go remove curling e-ticket means that process is called as a sedimentation and decantation means inside the screening we perform a two processes first is sedimentation and the other is decantation we can do the process fast with the help of adding some alum in it second is after sedimentation and Deacon Deacon tation water is passed through the Federation planter to improve to remove all the insoluble impurities means after that second part we can collect a clean water okay in a settling tank and after that we can filtered the water so that we can remove the insoluble impurities after that we can add some chlorine to kill the germs inside the filter of filter paper sorry filter paper not in filtered water we can add the chlorine and iodine also to kill the germs and microbes four days after chlorination and iodine Asian water is stored in huge water tanks and disturb distributed to our homes through a network of pipes okay we should use water wisely be should not waste water why we should not waste water because on the surface of our earth there is a zero PI to 0 3% of fresh water ok so I hope you will understand in this chapter now we discuss the Philips - is better way to remove insoluble impurities so during the battery is too sorry the battery to remove the insoluble impurities that is filtration second - is a process to speed up the sedimentation so the answer is loading with the help of alum we can speed up the process of sedimentation third is boiling is a process by which we can remove soluble impurities okay fourth is we can add - to purify water so we can add chlorine to purify water fifth is - water is a pure form of water so the distilled water is is a pure form of water take the correct option first which of these determine whether an object float or sink so all these points are included in whether an object will float or sink so the answer is d all of these monkey is using a funnel beaker and special paper which of these process is he doing so the filter paper is used in a filtration third is which of these processes commonly used to purify water at home for drinking so we can purify water at home with the help of a boiling okay so I hope you will understand this chapter very well thank you have a nice daynow in second part we discuss the other processes the second processes decantation okay this process is after sedimentation sea sediments can collect at the bottom of the container sediments means either insoluble impurities like sand pebbles and great mud these are the sediments okay so we can then pour we can then pour out clear water carefully without disturbing the sediments this process is called as a decantation many times some sediments also get poured out when decantation hands filtration is a better process to remove insoluble impurities okay means Joe apnea be container leotta just may happen a dirty water code our authority came those making a graph whose water Co disturb nature okay 15 to 20 minutes those major impurities on geebo bottom piece I tried all no Jangi take it or OPA do clean water hoga ausco hump or out curling get those free container me ticket so that process is known as a decantation de but is a decantation pouring out a clean water from the sedimentation that process is called as a decantation okay when we doing the Deacon tation some of the impurities are also entered in the water okay so that small impurities is removed with the help of a filtration process in filtration process we in filtration process we use a filter pop paper inside the funnel okay and then we pass out that decantation water through the filter paper and the impurities that is stuck on the filter paper and the pure water is collected inside the beaker okay so these are the three methods that we use to that we use to remove that insoluble impurities from the water first is sedimentation second is decantation and the third is filtration okay next is boiling and distillation boiling and distillation these are the two methods that is used for the removal of soluble impurities okay for example then we mix the salt inside the water when we mix the sugar inside the water so these are the some materials that we cannot separate with the help of sedimentation decantation and filtration so here we can use a boiling and a distillation process first is boiling soluble substances such as salt and sugar can be easily separated from water by the process of boiling because through the process of boiling water goes out with the water vapor than white boiling and the rest of the salt and sugar is in the beaker okay now but in a first demerit of boiling is that there is a lot of wastage of water while boiling okay so second process that we can use its distillation in distillation water is boiled and it changes to water and rises up all the impurities are left behind water vapor is then collected by condensation here you can see a picture of a distillation ya PKA a Kappa B Kura Takeda's main purity is and salt water key impurities and it's comlink ikea heat up kiya Jotham heat cut they avoid rocoto obviously escape water vapors form hungry ticket Jabez keep water vapor forms hungry to you humping you Cooper Joker what trick is make electro there you drop copper funnel Bana we're taking a pic yeonggi water vapors collector on it or in water vapors go home kiss me trap curl it a condenser me and through the help of condenser these water vapors are going in the distilled that floods okay and that water that is collected inside the the funnel is known as I distilled water and it is a purest form of water and in this process there is a no wastage of water okay the condensed vapor is called distilled water it is pure water and does not contain salt and other impurities they still this Viper than boiling because water does not get wasted in this process while separating soluble impurities distilled distillation give us the purest form of water is called distilled water and it has no germs and impurities okay now we discuss time please firstly match the column okay iron bar iron bar is a heavier object so it sink inside the water bodies next is salt so it is the soluble impurities sand is an insoluble impurities alum helping in the process of loading and distilled a distillation is helping us in the in the purification of water so next is true/false and object to sink then it is held up by water its cometh Lipka here does happen tip ask we have your object that tickles now apneas have your object KO panic and the deluded chicken does he up Kui batata some glass little ticket whose me Apple whoa pebbles ko dath it out ticket those make a Pawnee Baja Rinella Giga ticket though died processes piled up by water means Joby object to sink Ikaruga pani me who spoke I have water quito volume had that container may increase cardiga so the answer is true all solid objects the float in water no all Sol your solid objects sink in water we get water only from oceans no we get water from many water bodies like oceans ponds rivers in the etc sedimentation is a very fast process Falls sedimentation is a very slow process okay we make it fast by adding up a laminate okay 50s boiling is a better process because water does not get wasted that is a false in boiling there is a vestige of water okay next is drinking water drinking water is also known as a sorry drinking water is also known as a part above water okay quite above water means that is useful for drinking and fit for drinking first is boiling means these are the some processes how we make a water fit for drinking okay as we discussed previous builing boiling is the fastest method of purifying water it kills the germs that is present inside the water while boiling okay add some chemicals for example chlorine and iodine it has or it helps to kill the germs that is present inside the water and it also purify the water okay next is water supply water supply here we discuss the water wastewater treatment okay means Jessi up tied her make will be panna cotta chicken water so that from where that water is coming and how that water is coming to our homes firstly what we collect water from a river spawns lakes also okay but that water are taking a lot of impurities inside it so in the purification these after the purification of that water through the waterworks we can get a purified water inside our homes okay so here we discuss how the water is purified okay so firstly first point is water is collected in larger is wire we're sedimentation and decantation take place to let impurities settle down the see happy happy first to find a crew screening ticket screening Macau tell sedimentation or Thea take a sedimentation make Yahoo Vasa Joe Ponyo ausco Homme I'm disturbed 20 minutes the crack there means deathly be impurities on give a settle down ho Tang Jia Yu per se Hangzhou clean water else go remove curling e-ticket means that process is called as a sedimentation and decantation means inside the screening we perform a two processes first is sedimentation and the other is decantation we can do the process fast with the help of adding some alum in it second is after sedimentation and Deacon Deacon tation water is passed through the Federation planter to improve to remove all the insoluble impurities means after that second part we can collect a clean water okay in a settling tank and after that we can filtered the water so that we can remove the insoluble impurities after that we can add some chlorine to kill the germs inside the filter of filter paper sorry filter paper not in filtered water we can add the chlorine and iodine also to kill the germs and microbes four days after chlorination and iodine Asian water is stored in huge water tanks and disturb distributed to our homes through a network of pipes okay we should use water wisely be should not waste water why we should not waste water because on the surface of our earth there is a zero PI to 0 3% of fresh water ok so I hope you will understand in this chapter now we discuss the Philips - is better way to remove insoluble impurities so during the battery is too sorry the battery to remove the insoluble impurities that is filtration second - is a process to speed up the sedimentation so the answer is loading with the help of alum we can speed up the process of sedimentation third is boiling is a process by which we can remove soluble impurities okay fourth is we can add - to purify water so we can add chlorine to purify water fifth is - water is a pure form of water so the distilled water is is a pure form of water take the correct option first which of these determine whether an object float or sink so all these points are included in whether an object will float or sink so the answer is d all of these monkey is using a funnel beaker and special paper which of these process is he doing so the filter paper is used in a filtration third is which of these processes commonly used to purify water at home for drinking so we can purify water at home with the help of a boiling okay so I hope you will understand this chapter very well thank you have a nice day\n"