Bacterial treatment of water
Human activity, driven by scientific progress, has not had the best impact on water quality in rivers, lakes and underground sources. While in the distant past the resources of nature were sufficient for the process of self-purification of water, today this is not the case. The huge number of microorganisms that live in today's water sources, Mother Nature is simply unable to process itself, so water filters are used.
Despite the fact that tap water goes through more than one stage of purification, but the number of pathogenic (pathogenic) bacteria in it is large enough and can pose a danger to human health. The entry of bacteria into treated water is usually due to the condition of the water purification systems themselves and the pipes through which the water enters the house.
In drinking water, we can find the following types of bacteria: salmonella, cholera, coelenterates, dysentery, typhoid fever. Viruses, infections, the most common occurring with regular use of contaminated water are rotaviruses, adenoviruses, hepatitis type A, B, E, polio. Parasites can also cause diseases such as giardiasis, helminths, tapeworms, ascariasis, enterobiasis, which leads to impaired digestive system, can cause headaches, nausea, allergic reactions.
The reproduction of viruses and bacteria in the water is very fast, which is natural, as the aquatic environment is ideal for them. Chlorination of water gives a certain effect, but the chlorine residues are still present in drinking water and later it is not the best effect on human health.
Of course, the problem should be solved at the level of water intake and treatment at water treatment plants, as well as regular prevention of water supply channels, but the average person can have little influence on this. But to install a water treatment system in your home or to use a sinkhole filter can be done by most of us.
The main thing is to ensure proper care and replacement of replacement cartridges so that the same bacteria, microbes, and viruses do not accumulate. Many filter manufacturers offer silver as part of their replacement filter cartridges, which can prevent bacteria from multiplying.
One of the easiest and most known ways to combat pathogens in drinking water is by boiling. However, boiled water also lacks the useful bacteria that the human body needs.
The bacteria filters can be roughly divided into three groups:
- Slug filters. In these, water seeps through a replaceable cartridge into the lower vessel.
- Flow devices. They are installed directly on the mixer.
- Filtering systems. They are installed near the sink, connected to the cold water pipe and have a separate tap. As a rule, a water softener filter is also installed there.
Filter-sinks differ in appearance, composition, capacity, cleanability of the filter cartridge. The filter element of the water purifier can contain activated carbon, carbon with applied silver ions and ion exchange resins.
Flow devices mainly contain a sediment filter and activated carbon element. The capacity of such devices is small and the cartridge used is capable of supplying drinking water to the family for several months. After the filter cartridge expires, it is necessary to replace the cartridge with a new one.
Complex deep cleaning devices contain a sequence of two or more filter elements. They are installed under or near the sink. The simplest of these devices differ from those mounted directly on the mixer by having a separate water supply and tap. In addition, such filters for water purification in USA from bacteria have a capacity of filter elements, which is much larger and is designed to clean several thousand liters of water for six months.
Electrochemical filtering devices work on the application of processes of electrochemical oxidation and restoration. Such filters require power from the electric network, but their power consumption is very small. They have a long service life but require regular flushing once every two months.
The most complex bacteria filters are based on the principle of reverse osmosis of water when it is transported through the membrane. Such a unit is collected from a pre-filter, activated carbon pre-filter and a composite thin film membrane. This diaphragm ensures the highest possible degree of cleaning. For the finish cleaning, the last element containing activated carbon is installed.
The most complex filter units can contain up to six cleaning units. In addition, they are equipped with a special pump that maintains water pressure. Most often, these units have a container in which the purified liquid is collected.To improve organoleptic characteristics, it is enough to use filters for water purification from bacteria in Chicago, consisting of activated carbon. Such devices are used long and very successfully. Due to its high capacity for adsorption activated carbon is quite effective in absorbing organic compounds and bacteria. However, the accumulated organic matter is very difficult to remove from such material. Therefore, activated carbon filters need to be replaced periodically in order to avoid the possible release of contaminants into the cleaning liquid. To increase the service life of such devices, activated carbon from coconut shells is now used.