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White precipitate in waterit appears due to the large content of iron, magnesium, calcium salts in it, in other words, stiffery salts. Skip in water heating devices (for example, in kettle), film on the surface of tea, white flakes - all this indicators of overly rigid water. Unfortunately, the use of such fluid in the economy entails a lot of unpleasant consequences.

From this article you will learn:

Why there is a white precipitate in water

Whether white precipitate is harmful in water

How to prepare water to check in the laboratory

How to safely remove a white precipitate in the water

Whether white precipitate is harmful in water

So, why does a white precipitate appear in the water? Hard water is this liquid with a high proportion of calcium salts, magnesium, which form such a scale. The enrichment of the fluid occurs at the time until it is underground. If there are many of these substances in a certain area - water will be tough if there is little soft.

In addition, the rigidity of water is divided into permanent and temporary. This indicator depends on the type of salts. The second variant is associated with the presence of water-soluble salts in water. They disintegrate when the fluid is heated - when the kettle or washing machine is working in the water, a white precipitate falls. It is well noticeable with the naked eye and after a certain time it causes the breakdown of household appliances.

In the presence of insoluble salts in the liquid, the rigidity is considered constant. Such a situation is much more dangerous than those considered above. The reason is that when water boiling, salts are not evaporated, and create a layer on all surfaces, including on the skin and internal organs, provoking diseases.

If we turn to chemistry, water rigidity is a set of physical processes in water associated with the content of dissolved salts of alkaline earth metals in it, for greater extent calcium, magnesium. Aluminum, trivalent iron (FE3 +) is also able to change the indicator we are discussed. True, it is important to understand that pH levels that occur in natural water do not allow them to affect the state of water. For the same reason, no one takes the calculation of the barray (Va2 +), which is weakly affecting the quality of this fluid.

Stiffness is a practically the main indicator in determining the suitability of water for use in industry and in everyday life. The appearance of white sediment in water after boiling is connected just with this standard.

It is calculated by the amount of millimole calcium ions, magnesium per liter of water (mmol / l). 1 mmol / l is the molecular weight of any substance in mg / l, divided into valence. 1 mmol / l denotes that there are 20.04 mg / l calcium or 12.10 mg / l of magnesium in the water liter. To make it easier, it is customary to use the MG-EQ / L value, which is equal to mol / m 3. In addition, there are such stiffness units as German degrees (DH), French degrees (TH), American degree (PPM).

Now we will dwell on the types of hardness of water, which have already been mentioned above:

Temporary - carbonate rigidity is associated with the presence in water (at pH\u003e 8.3) calcium bicarbonates, magnesium - Ca (HCO 3) 2, Mg (HCO 3) 2. If we increase the temperature of such water, unstable bicarbonates go into an insoluble form, that is, Caco 3 ↓ carbonates are formed, and coal acid is released, and white precipitate is formed in boiled water, simply put, scale, boiler stone. This type of water boiling hardness can be almost completely eliminated, because of which it is called temporary.

Constant - necarbonate rigidity is associated with the content of sulfate, nitrate, chloride anions. Their calcium and magnesium salts (CaCl 2, Caso 4, MgCl 2, MgSO 4) cannot be deleted when boiling.

General - The total value of the presence of magnesium salts and calcium in water, in other words, carbonate and non-carbonate rigidity combined.

By the amount of salts, the rigidity of water is classified according to the graduation:

soft water - rigidity 3 mM-eq / l and more;

average rigidity - from 3 to 6 mg-eq / l;

rigid water - over 6 mg-eq / ml.

Obviously, tough water has a serious impact on the state of our health. Namely:

First of all, unsatisfactory water quality affects the skin. Pores are blocked, the natural fatty film disappears, designed to protect the covers, dry, irritation, dermatitis, rash, etc. appear.

The condition of the hair and the scalp is deteriorated due to those substances that form a white precipitate in water. Similarly, dryness, itching, dandruff, hair becomes hard, naughty and even after washing it seems not sufficiently neat.

However, the key is that insoluble salts have the property of accumulating in the body, this leads to the formation of stones in the kidneys and clogging vessels. Thus, the long-term use of hard water is irreparably affected by health!

True, it is impossible to say that everything is so unequivocal. It is important to understand that the admissibility of rigidity of drinking water may vary depending on specific local conditions. The threshold for calcium ion is in the range of 2-6 mg-eq / l, the amount of the corresponding anion affects it, while this magnesium indicator is much lower (in some situations, water is allowed with a rigidity of 10 mG-eq / l). Hard water has a mustard, negatively affects the digestive organs, and the organoleptic properties of water leave to be desired.

If you see a white precipitate when boiling water, know that such a liquid cannot be useful to the same extent as soft. Soft water It is characterized by a very large number of advantages, compared with tough. This applies both to household needs and to the quality of people's lives in general:

reduction of expenses on detergents It will be about 30-50%, because in soft water soap, powders and other products give excellent foam;

no faults of household appliances, plumbing, even clothes will also allow you to pay you from spending serious money;

raising the quality of food, beverages;

improving the appearance of the skin, hair;

lack of a threat of urolithiasis, as well as other diseases internal organsthat perhaps is the most important.

It turns out that the use of soft water can directly affect the reduction of expenses, as well as bring comfort and ease into your life. Remember: with rigid water and white sediment in water, you can and need to fight, and the sooner you can pay this issue your time, the better.

How does a white precipitate affect the water on household appliances, clothes, plants

There are a number of spheres in our lives, for which rigidity in principle is unimportant. So, any water can water the lawns, stew fires. However, the rigidity of water becomes beaches not only when cooking and drinking, but also in everyday life: when washing, washing dishes, etc. Appliances (washing, dishwashers, etc.), autonomous systems of hot water supply, heating is afraid high rigidity water. So, the struggle with it turns out to be relevant. Salt of stiffness after boiling water falls into a white precipitate, familiar to everyone. Such a scale reduces the duration of the plumbing, household appliances, heating boilers, pipes.

How does the rigidity of water on domestic processes affect? In this case, there is a waste of detergents when washing underwear, washing by 30-50%. Low consumer characteristics of water are also noted: during the preparation of coffee, a brown sediment may appear in such a fluid. Either while it is boiling, a film is formed on the surface, and the water acquires a specific taste.

It is worth talking in more detail about the effect of water stiffness on the results of washing and washing. The danger is that the salts of stiffness together with detergents (soap, shampoo, washing powder) form "soap slags", which look like foam. When drying, they create the finest layer on the skin, hair, causing serious harm to their health. As a result, dry skin, brittle hair, peeling, itching, dandruff. One of the harbingers of such a negative impact is a characteristic "creak" of washed skin, hair. Restore the lost fatty film allow special creams and masks. But the "slippery", felt after washing with soft water, is a guarantee of preserving the protective fatty film.

Around the world, cosmetology specialists choose soft water for washing. Since rigid water, drying the skin and does not allow the soap to foam to the remedy. Hardwater, as we said, when boiling gives a white precipitate, but the same flare is formed on the walls of boilers, in the pipes, etc. True, and preference is unnecessarily soft water. The fact is that it can cause corrosion, since it does not have such an important property as acid-alkaline bufferiness provided by hydrocarbonate (temporal) rigidity.

How to easily remove a white precipitate in the water

The most budget and easy option to combat white sediment in water, for example, from a well - boiling. At +100 ° C, all the salts of rigidity are manifested as a white sediment. It is easy to notice on the walls of a saucepan, kettles. This kind of bloom is called screaming. Boil seemingly ensuring water mitigation, but then it is not so easy to restore the affected dishes. Tell a solution: if you want to return the teapot for the same type, for some time boost water with adding citric acid Or vinegar - the sour Wednesday will cope with the problem.

What if water after boiling has a white precipitate

The preference of a specific method of waterproofing water should be given, repulse from that locally or largely you want to solve this problem:

If you need only soft drinking water, quite usual with all of us filter-jug. True, your homework will still work with water of high rigidity.

As soon as you decide to take care of the long working capacity of household appliances, the purchase of special tablets or powders mitigating water will be a good solution. This is a great option for dishwashers, washing machineswhich, however, is completely not suitable for treating drinking water, if a white precipitate falls at boiling water.

But let's say you still approached the question globally. Then we recommend thinking about installing filters reverse osmosis. They will soften all the water that goes to you from the cranes, and you do not have to worry about any health, nor for the condition of the instruments.

How to remove a white precipitate in water 100%

There are several ways to clean drinking water from hardness salts.

Reverse osmosis. The principle of the method is that water passes through semi-permeable membranes (most often polyamide). Together with stiffery salts, most of the other salts are leaving. The positive effect of such processing can reach up to 99.9%. This technology is most common in domestic drinking water preparation systems. However, the method has a disadvantage, it is necessary to prepare water supplied to the reverse osmosis membrane.

Electrodialysis. Salts from water, for example, from wells, which give a white precipitate after boiling, are removed by electric field. Ions dissolved in liquids substances are eliminated using special membranes. Here, as in the previous technology, a parallel removal of other salts is carried out along with rigidity ions.

Thermal method. Water simply heats up, thanks to which only temporary (carbonate) rigidity is eliminated. Most often, this method is used in everyday life, but it is involved in industry, for example, at CHP.

Softening reagents. The method is to enter into water to choose from: soda, hated lime. In this case, the calcium salts already familiar to us, magnesium transition to insoluble compounds and form a white precipitate in water. This option is considered justified if it is necessary to treat a lot of water, as it entails the need for additional, fairly specific steps: sediment filtering, accurate dosage of the reagent.

Ion exchange. In this case, ion-exchange granulated loading is used (usually ion exchange resins). In contact with water, it absorbs the cations of stiffness salts (calcium, magnesium), giving, in accordance with the ion form, sodium ions or hydrogen. Therefore, such methods are called the names: Na + -Ben and H + -Ben. Normally, with a single-stage sodium-cationing, water rigidity is lowered to 0.05-0.1 mM-eq / l, with a two-step - to 0.01 mM-eq / l.

What can be done if there is a white precipitate in water from the well

If you can afford a filter or more productive systems with aeration column, ion exchange resins, etc., the problem disappears by itself. But if there is no such possibility, you will help the water purification algorithm in the well. So, you need to implement such procedures:

Conducting revision, waterproofing of seams between rings and entering the pipe in the well.

The formation of a waterproofing layer on the upper rings.

The implementation of forced drying of the inner side of the rings, the removal on the walls of the sludge and deposits.

Cleaning or construction of a bottom sand-chicken filter.

Creating a shungite bottom filtering layer.

Disinfecting the walls of the well with the help of a solution of a chlorine-containing means like "whiteness" (0.5 l means on water bucket).

Disinfection of water contained by means of chlorine-containing means.

Water aeration device in the well.

Choosing a good lid for a well.

Why remains white precipitate in water after filter

You have purchased a filter that cleans water from mechanical impurities (rust, whipped lime-plated pipes), and not chemical compounds (chlorine, salt). Staying in the liquid, they give a white precipitate in water after boiling.

The filter was not changed for a long time, he failed. You must buy a new one.

Low quality filter. Pick up another option.

Our company Biokit offers a wide selection of reverse osmosis systems, water filters and other equipment that can return water from under the tap its natural characteristics.

our company Biokit. It offers a wide selection of reverse osmosis systems, water filters and other equipment capable of returning water from under the tap its natural characteristics.

Specialists of our company are ready to help you:

connect the filtering system yourself;

deal with the process of selecting filters for water;

pick up replaceable materials;

eliminate malfunctions or solve problems with the involvement of installers;

find answers to your questions in the telephone mode.

Trust water purification systems from Biokit - Let your family be healthy!

What diffirable water do not sing, and in nature it is still not inclusable. Whether it is a trunk or current from the crane, it always contains salts and gases. Despite the wide range of types, water in living conditions It can be rigid or soft. It should be recalled that in a soft medium, calcium and magnesium volumes are significantly less. This is why soap foams in it well, the powder is perfectly dissolved, the dishes are quickly washed and swinging.

But does not have such properties, although it is foaming if it is physically affected.

However, there are many reasons for the fact that pure water bubbles. One of these motives is:
- the presence of organic inclusions, and in large quantities. In the event that such, it is necessary to obtain reliable information for the health of the main supply lines in the relevant services.
- It will not hurt to check and the inner home strapping of pipes. The appearance of foamy water, directly, from the crane will be a hint of a visit to the structure of the improvement of the region.
- A similar phenomenon occurs in the presence of solid suspension in a dissolved form, since they can in every way to prevent vapor or gases from it.
- Foaming is also occurring as a result of a high pH. When applied concern, you need to call a qualified specialist to assess the situation.

Ways to eliminate foamy water

Water foams, that is, when the sound of the cough type is heard when the sound is heard. Perhaps in the liquid medium remained residues of substance (algicide). It is possible that detergents used to clean water in the winter season could remain.

Active oxygen contributes to the removal of foam, subject to the preservation of the hydrogen indicator. In this case, active oxygen also shows disinfectant properties.

By the way, a soap solution from the economic soap is prepared in the laboratory, is poured with distilled water, it is stirred to prepare, sustainable bubbles. In large-scale cases, for example, it is supplied under high pressure, which inevitably forms bubbles on its surface. This situation is not dangerous, but effective and successfully applies when it is deleted by various types of anti-tracks.

So all sorts of suspensions adhere to the bubbles. Raising the water level, the foam with the worthless inclusions through the drain hole is removed from one or another container.

Hello! We have a well, in which there was always clean water, but now she has become muddy and foam. Tell me, what could be the reason and is it not dangerous.

Answer

Good afternoon, Alena! Reduce water quality can various factors, including pollution of mineral or organic type. The first is a variety of mechanical inclusions and suspensions, as well as or accumulated over the long period of operation. The second one includes various microorganisms and dense algae and - in this case, water also smells unpleasantly. Technogenic factors should not be excluded - possibly the underground source is polluted by the chemical drain of any enterprise working nearby.

Foaming of water testifies to the increased content of organic impurities and the smallest inorganic suspension. In addition, the appearance of a foam leads a high pH. You can find out about the causes of trouble in the nearest Sanstanda laboratory. Specialists will make a fluid analysis and will make a conclusion about the suitability of water, and also recommend that it can be done for cleaning it.

On our site there is a good article on disinfection of water in the well. Perhaps the advice given in it will help to cope with the troubles that have arisen. You can read it by reference:

Foys. Their appearance may be associated with different reasons.

Sometimes there is nothing terrible in the foam, and sometimes it is a signal to correct some aspects associated with the tank.

Below can be familiar with the main reasons for the appearance of foam in aquarium and ways to prevent problems related to it.

Why is water foams?

Foam in aquarium creates accumulation organic compounds (Often these are proteins and amino acids) in water. Organizer makes water fatter, and strong filtration, aeration and other phenomena contributing to the wiping of water are whipped with protein substances, as a result of which the foaminess appears. In standing water, foam is not formed.

When the aquarium is first launched, bubbles of foam also appear due to the preparation of biological filters, in which case it is enough to wait and the water itself will become crystal clear.

It is worth noting that More contributes to the appearance of foam on the surface of the aquarium than tough. In most cases, foam does not carry some threat, especially if it does not appear. In case of discovery of odors, pronounced turbidity of water, changes in its color, or dead fish stands to quickly find weakness In the reservoir.

Main reasons

Scenery

It is possible to understand that it is the scenery to blame in the foam of water in the color of foam (it can be of any color, but most often occurs gray and dairy colors). To solve the problem with scenery need:

1. Salt the ill-fated object from water
2. Run the filter and aerozer.

In order to prevent the problem, it is recommended to implement decorative elements Only after checking, pre-watering them with running water. Acquire exceptionally high-quality goods in specialized stores, and avoid paint-plated parts.

If the details are noticeable peeling or microcracks, then put them in the container is prohibited.

Sometimes the dead inhabitants of the aquarium can be stuck in the scenery and it can also be the cause of foam.

Filters

Another common cause of foam education is the problem with. It may have a weak or vice versa strong power, or be contaminated. You can recognize the filter problems by the presence of foam, organic residues in water and blue-green or red algae. The decision will be:

1. Acquisition of a high-quality optimal power filter if it does not cope with its task.
2. Disaster and washing the filter if it is dirty.

To prevent troubles, you must select a filter suitable for aquarium, follow it properly and carry out preventive measures.

Chemicals and medicines for fish

They have a property to join the reaction with an organic, creating a frothy "cloud" on which you can identify the roots of the problem. To get rid of negative effects required:

1. Minimize number chemical fertilizers and medicines.
2. Take advantage of the mechanical filter, pump or aerator.

To prevent unnecessary foam, it is possible to initially carry out experiments with preparations in a separate capacity with water and predict exemplary options for the development of events, and at the same time, and determine the optimal dose of drugs. Usually all the necessary information is provided in the instruction that needs to be clearly followed.

Dissolving plants

With the growing vegetative mass of plants, volatile substances are distinguished, which are easy to identify by smell, for example: hydrogen sulfide, ammonia, swamp, rotting, fermentation. In the event of damage to the soil by poisoning substances, it is necessary:

1. Extract and carefully.
2. Dry in the oven.

Usually cleaning the accumulated garbage from the surface of the soil stops the problem in the embryo.

Irregular cleaning

It is possible to understand that the foaming is an infrequent change of water, it is possible not only by the presence of foam, but also garbage, waste, scales, abdinced feed and so on. All this clogs water and dissolves in it. In addition, cyanobacteria, rapidly developing in dirty water Start bloom and create additional clouds. In order to correct the situation and prevent problems with the contamination of the tank, it is sufficient to update 10-20% of the water every week.

Overly frequent liquid replacement

Do not fall into another extreme - update water too oftenSince it is fraught with clouding of water and the death of useful bacteria that are unable to recover. Biological water filtration depends on them. The recipe for correcting and preventing the problem is the same as in the previous paragraph - timely portion of water updates.

Quality and quantity

Create a "cloud" from the foam can be an abundance of feed. Its oversupply leads to the pollution of the reservoir, given that the inhabitants of the aquarium need not so much food. To solve the problem you need:

1. Examine every phenotype contained in the aquarium.
2. Pick up optimal size Portions and suitable meals, and do not go out for the installed limits when feeding.
3. Select high-quality food.

To prevent difficulties with feeding, it is necessary to study theoretical aspects associated with the feeder and act in harmony with them in advance.

It is important to monitor so that the renewing feed does not appear.

Overcrowding

Although there are plenty of inhabitants and will delight the eye of the aquarium and guests, but it is not always justified and useful for fish, especially if they are characterized by character and behavior, which prevents them from getting safe.

All these factors introduce fish into a state of stress, worsen them appearance, reduce life, and in addition, the process of servicing the reservoir is complicated.

Prevent the emergence of all of the above problems, including excessive foaminess and contamination, you can correctly select the capacity and sewer of "residents" in comfortable aquariums. To do this, you can use the rule:

1. On 10 liters of water one small fish.
2. 20-30 liters - one big fish.

Water quality

Health and appearance of fish depends on this factor. High-quality water For aquarium should be transparent and a little yellowish, it is called "residential".

You can make any water procedures in the tank only 5-6 days after the first launch, and if the flooded fluid is really good, it does not have to change it for several years. But it will need to update it in a timely manner.

If the owner monitors the state of the soil, filters, scenery, nutrition and timely replacement water, then with a large share of probability, no emergency situations and strong foaminess will arise.

Otherwise, it is worth paying attention to one of the above aspects and correct it. It is important to remember - the full replacement of water is made only in the most emerge, and a small pollution of water is corrected by small adjustments.