Taste And Odor. Water Purification

Water can dissolve different substances, giving it different tastes and smells. Humans and other animals have developed senses which are (more or less) to give them an opportunity to assess the suitability for drinking water, avoiding water which is too salty or putrid. People also prefer cold water, warm water, because cold water is likely to contain fewer microbes. Advertised in spring water or mineral water flowing from minerals dissolved in it: pure H2O is tasteless and odorless. Advertised purity of spring and mineral water refers to the absence of toxins, pollutants and microorganisms.

Water purification may also give the water its original properties. Waste water treatment - a set of measures to remove pollutants contained in municipal and industrial wastewater. Purification of several stages: mechanical biological physico-chemical disinfection of sewage sometimes. Performed pre-treatment received at the wastewater treatment plants in order to prepare them for the biological treatment. On a mechanical stage is retention of insoluble impurities. Performed pre-treatment received at the wastewater treatment plants in order to prepare them for the biological treatment.

On a mechanical stage, the detention insoluble impurities. Structures, mechanical wastewater treatment: the lattice (or UFS - self-cleaning filter device), and sieves; sand catchers, primary clarifiers, membrane elements. For the detention of large contamination of organic and mineral origin are used for grating and a better allocation of coarse particles - sieve. The maximum width of the grating is Prozorov 16 mm. Refuse screenings or crushed and directed to co-processing with precipitation treatment facilities, or are transported to the place of processing of solid household and industrial waste. Then the effluent passes through sand catcher, where the deposition of fine particles (sand, slag, broken glass, etc.) under the influence of gravity and zhirolovki, which is removed from the surface of hydrophobic substances by flotation. Sand from the sand traps are usually stored or used in road works. In Recently, membrane technology is a promising method for wastewater treatment. Wastewater treatment using advanced membrane technology is used in combination with traditional methods, for a deep cleaning of drains and return them to the production cycle. 1 thus purified wastewater transferred to the primary settling tanks for separation of suspended solids. BOD reduction of 20-40%. As a result, mechanical treatment removes 60-70% of chemical contamination, and BOD5 is reduced by 30%. In addition, the mechanical cleaning step is important to create a uniform motion of the waste water (averaging) and to avoid fluctuations in effluent on the biological stage.