What is water pollution?

Water pollution classification
There are two types of water pollution: one is natural pollution; the other is man-made pollution. At present, the most harmful to the water body is man-made pollution. Water pollution can be mainly divided into chemical pollution and physical pollution according to different pollution impurities. And biological pollution in three major categories.
Chemical pollution
Polluted impurities are water pollution caused by chemicals. Chemical pollution can be divided into 6 categories according to specific pollution impurities:
(1) Inorganic pollutants: The inorganic pollutants polluting water bodies are acid, alkali and some inorganic salts. Acid-base pollution changes the pH value of water bodies, hinders the self-purification of water bodies, and corrodes ships and underwater buildings, affecting Fishery.
(2) Inorganic toxic substances: inorganic toxic substances that pollute water bodies are mainly substances with potential long-term effects such as heavy metals, mainly including mercury, cadmium, lead, arsenic and other elements.
(3) Organic toxic substances: The organic toxic substances polluting water bodies are mainly various organic pesticides, polycyclic aromatic hydrocarbons, aromatic hydrocarbons, etc. Most of them are synthetic substances, which are chemically stable and difficult to be decomposed by organisms.
(4) Aerobic pollutants: organic acids such as carbohydrates, proteins, fats, phenols and alcohols contained in domestic sewage and certain industrial wastewaters can be decomposed by microorganisms. In the process of decomposition, a large amount of oxygen is required. Called aerobic pollutants.
(5) Plant nutrients: mainly plant nutrients such as nitrogen and phosphorus in domestic and industrial sewage, and residual nitrogen and phosphorus in farmland drainage.
(6) Oil-based pollutants: mainly refers to the pollution of oil to water bodies, especially marine oil production and tanker accidents.
Physical pollution
Physical pollution includes:
(1) Suspended material pollution: suspended matter refers to insoluble substances contained in water, including solid materials and foam plastics. They are wastes from domestic sewage, garbage, and mining, quarrying, construction, food processing, papermaking, etc. The suspended matter caused by water and soil loss in water or farmland affects the appearance of water, hinders the photosynthesis of plants in water, reduces the dissolution of oxygen, and is unfavorable to aquatic organisms.
(2) Thermal pollution: If the cooling water from various industrial processes is directly discharged into the water body without taking measures, it may cause the water temperature to rise, the dissolved oxygen content to decrease, and the toxicity of some toxic substances in the water to increase. Thus endangering the growth of fish and aquatic life.
(3) Radioactive pollution: Due to the development of the atomic energy industry, the exploitation of radioactive mineral deposits, the establishment of nuclear tests and nuclear power plants, and the application of isotopes in the fields of medicine, industry, and research, the radioactive wastewater, and waste are significantly increased, causing certain radioactive pollution.
Biological pollution
Domestic sewage, especially hospital sewage and some industrial wastewater polluting water, can often bring in some pathogenic microorganisms. For example, some pathogenic bacteria originally found in the intestines of humans and animals, such as typhoid fever, paratyphoid fever, cholera bacteria, etc. can pass through humans and animals. The feces are polluted and enter the water body and spread with the water. Some viruses, such as hepatitis virus and adenovirus, are also found in polluted water. Some parasitic diseases such as amoebic dysentery, schistosomiasis, leptospirosis, etc. It can also be spread by water. Preventing the contamination of water by pathogenic microorganisms is also a major issue to protect the environment and protect human health.
The source of water when the earth is formed
Source of water
The Earth is the only planet among the eight major solar systems covered by liquid water. The origin of water on the earth is very different in academics. There are dozens of different water formation theories. There are opinions that in the early days of the formation of the earth, the original Hydrogen in the atmosphere, oxidized synthetic water, and water vapor gradually condense and form oceans. It is also believed that the formation of the earth’s nebula material originally contained water. In addition, it is believed that silicates and other substances in the original crust are affected by volcanoes. Influence and reaction, precipitation of water. There are also views that the comets and meteorites attracted by the earth are the main sources of water on the earth, and even the water on the earth is still increasing.
When we open the world map, when we face the globe, most of the area presented to us is bright blue. Looking at the earth from space, the earth we live in is an elliptical, extremely beautiful azure sphere. Water is the most natural material on the surface of the earth. It covers more than 70% of the earth’s surface. The earth is veritable big water polo.
Some people may ask: Where is the water coming from? Is there water on earth?
When the earth was just born, there was no river, no ocean, no life, its surface was dry, and there was little water in the atmosphere. Now the vast sea, the endless river, the vast lakes, the strange shape The eternal years of ice and snow, as well as the underground springs and the rain and snow in the sky, where did the water come from?
The original Earth is a mixture of interstellar matter differentiated by the solar nebula. Its basic composition is hydrogen and nitrogen and some dust. Solid dust gathers to form the core of the earth, surrounded by a large amount of gas. When the earth is formed, the structure is loose. The quality is not large, the gravitation is small, and the temperature is very low. Later, as the earth continues to shrink, the radioactive material of the core generates energy, causing the earth’s temperature to rise continuously. Some substances slowly warm and melt, and heavier substances such as iron and nickel. The nucleus is formed at the center, and the lightest material floats on the surface. As the surface temperature of the earth gradually decreases, the surface begins to form a hard crust. However, due to the high temperature inside the earth, the magma activity is very intense. The volcanic eruption is very frequent. The earth’s crust is also constantly changing. In some places, ridges form peaks, and some places sink to form lowlands and valleys. At the same time, a large amount of gas is emitted. As the earth’s volume shrinks, gravity also increases. At this time, these gases are unable to get rid of the earth. The gravitational force, which surrounds the earth, constitutes the “primitive earth atmosphere.” The original atmosphere is composed of various components, and water vapor is among them. One.

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What is the role of the water purifier?

The function of China’s best water purifier is to perform water treatment for deep filtration and purification treatment of water quality according to the requirements for the use of water.

The core of the technology is the filter membrane in the filter element device. At present, the main technology is derived from the ultrafiltration membrane and the RO reverse osmosis membrane.

The water purifier can effectively remove rust, sand and gravel, colloids and chemical reagents such as residual chlorine, smell, color and pesticide in the water.

It can effectively remove impurities such as bacteria, germs, toxins, and heavy metals in water.

The application of water purification technology in the field of drinking water makes the phenomenon of “unacceptable soil and water” soon become history, effectively solving the local diseases caused by excessive harmful substances in groundwater in many places.

Extended information:
The working principle of the water purifier:

First stage: Microfiltration membrane: Microfiltration membrane removes various visible objects/dust and impurities in tap water. This particulate matter comes from pipe aging, rust, secondary pollution of roof tanks, and so on.

Second stage: Compressed carbon: Compressed carbon removes chlorine and organic impurities such as harmful pesticides. It also absorbs the odors, colors, and odors of organic compounds in water, which are derived from the disinfection by-products of tap water.

Third stage: Ultrafiltration membrane: Ultrafiltration membrane can remove bacteria, viruses, and spores from water.

The fourth stage: the filter life indicator: the inside of the device is designed for the gear structure. As the water flows through, the gear rotates to move the inner one axially until the water outlet is blocked, and the water flow cannot pass, that is, through the design. The itinerary calculates the total amount of water in the water purifier to ensure that the water is safe.

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The water purifier is good, you have to look at the filter material.

Nowadays, everyone’s living conditions are getting better and better, and environmental pollution is getting worse. In some areas, drinking water is in a polluted area. In this case, many families began to choose to install a water purifier to filter tap water.
However, some people say that it is not safe to use a top 5 water purifier because the trace elements in the water will be filtered out. Some people say that the water purifier will also cause secondary pollution. Is this really true? To answer this question, we must first understand how water purifier works.

Now many home appliance manufacturers and various emerging manufacturers are producing water purifiers, more and more types, but the working principle is nothing more than two: ultrafiltration water purifier and reverse osmosis water purification.
Ultrafiltration refers to the purification of the solution, separation or concentration membrane through the separation technology to achieve the purification of the solution.
Therefore, the water purifier is mainly removed from some substances harmful to the human body. And qualified water purifiers use food-grade materials, which are generally pollution-free.
If your body function properly and you can guarantee a normal diet, even if you drink water filtered by a water purifier for a long time, your body will not have any problems. Conversely, drinking water after filtering harmful substances is safer for the human body.
Groundwater and lake water are the main sources of domestic water, but the two water sources need to be treated in depth with the test report data. Different process flows are provided according to different water quality. The main filter materials for filtering groundwater are RO membrane, PVC alloy ultrafiltration membrane, Manganese sand, KDF, activated carbon, chloroform, soft water resin, disc filter, mineral fossil, etc.

Manganese sand itself is a strong oxidant that can oxidize iron ions in water and has good performance of removing manganese and iron. It is an ideal product for removing iron and manganese from the water supply and drainage industry. According to the sanitary standard of drinking water in China, the iron content is ≤0.3mg/L and the manganese content is ≤0.1mg/L. Drinking iron with excessive iron content for a long time will seriously affect the health of the body.
Technical requirements for manganese sand for removal of iron and manganese:
1. The average density of the natural manganese sand filter material is generally in the range of 3.2 g/cm3 to 3.6 g/cm3. Except for those with special requirements for density in use.
2. The hydrochloric acid solubility of natural manganese sand filter should not exceed 3.5% (percentage by mass, the same below).
3. The sum of the breaking rate and the wear rate of the natural manganese sand filter should not exceed 3%.
4. Natural manganese sand filter material should be free of visible soil, shale, and foreign debris, and the mud content should not exceed 2.5%.

As an important filter material for water purification and decontamination, it plays an irreplaceable role in the scene of more and more modern water purifiers. Purified water can be drunk without harm to the body, but it is not encouraged to drink more. After all, Pure purified water also means serious environmental pollution. It is more hopeful to control the pollution of water sources and make our lives greener.

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Water Purifier Filter Replacement Guide

“I am willing to buy a water purifier, not willing to change the filter”, which is a common psychology of many water purifier users.
Is the filter too expensive? Too lazy? Afraid of trouble?

Even if the ultra-filter core is very long, it doesn’t want to change.
Even if the machine reminds you several times, I don’t want to change it.
Or just buy a cheap “cottage” filter and put it on.
But Xiao An wants to remind me, but don’t “be a big loss”~
As the “core” component of the good quality water purifier, once the filter element is blocked or the quality is not enough, it is like a problem with the “heart and lung function” of the person, which not only has a poor filtering effect but also makes the whole machine dull.
Imagine if the filter element fails, what are the dirty things and bacteria that cannot be filtered?

1
The filter element will not change for a long time, it may…
1, the filter effect is weakened, can not be purified

The adsorption capacity of the filter element is saturated, and the filter effect of the blocked filter element is greatly reduced. At this time, the filter element is like “a cup full of water.” Continued use will not only achieve the purification effect but will also “overflow”, resulting in lower purity. If you continue to use this impure water, it will let harmful impurities enter the body and affect your health.
2, overload work, filter grade damage

Household water purifiers are generally filtered step by step. If the filter element is blocked, impurities such as sediment and rust in the water will enter the next-stage filter element, so that the filter element that was not responsible for filtering large particle impurities bears an extra burden, thereby shortening its life. Just because of the bad habit of “changing the filter cartridge from time to time”, you need to lose two or more filter cartridges.

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Is it useful to use a water purifier at home?

Many people want to install a water purifier at home. Is it really useful to install a water purifier? With the increasing safety risks of water quality in various parts of China. For example, in the southern region, the water quality is generally hard, and it is easy to cause stone disease and other factors affecting the health of the human body; in the northern region, the heavy metals are generally exceeding the standard, which poses a hazard to human liver, gallbladder, and kidney. The most important function of the water purifier is to improve the tap water, to drink, to replace the bottled water, cheaper and more sanitary. Can we specifically see what the role of the water purifier is?

Is it useful to use a water purifier at home?
Method / step
Household purifiers mainly filter out impurities in the water. If you use them, you will see that the filter element filters out some small particles, some are impurities in our water supply pipe, and a purifier with disinfection function, disinfecting the water again if you It is best to use a purifier in a small city.

Is it useful to use a water purifier at home?
2
After the tap water is boiled, it is still impossible to remove scale, heavy metals, volatile substances, and bacterial carcasses. After the tap water is disinfected by chlorine gas, it can kill viruses and bacteria, but it can’t remove scale, heavy metals, volatile substances, etc., and the corpses of viruses and bacteria still exist, and after chlorine poisoning, the chlorine will be present in the water. Tap water will choose to boil and drink again, but boil can only deal with bacteria Issue (problem), can not deal with sediment, rust, scale, heavy metals, volatile substances and bacterial bodies and other Issues, so you need to install Water device to solve these problems

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