It is intended for purification of water from artesian wells from iron, manganese, color and turbidity, and bringing these parameters to the established requirements.
The set of equipment is calculated and selected based on the chemical composition of the source water.
In some cases, with the help of this unit, it is possible to solve the problem of removing dissolved gases from water, as well as to reduce the oxidizability.
The technology is based on the method of simplified aeration, filtration and biological oxidation of divalent iron and manganese ions, retention of the formed compounds in the thickness of the filter loading. This technology is reagent-free and does not require the introduction of additional oxidizing agents.
Technology of plant operation
Source water from artesian wells is saturated with air oxygen with the help of water-air ejector before entering the pressure filter-module "Crystal - H". In water supply schemes, where there is no possibility to use the ejector, oxygen supply is carried out by oil-free compressor. Further, the initial water saturated with oxygen enters the pressure filter, in the thickness of the loading of which is bio-separation and removal of iron compounds, manganese, turbidity, color from the water. Filtering takes place from top to bottom. Quartz sand with a fraction of 1-2 mm is used as a loading. It is possible to use other types of loading (activated carbon, expanded clay, etc.). Flushing of loading is carried out with purified water from bottom to top. Water is supplied to the drainage system, evenly distributed over the filter area and rises upwards through the loading with such intensity that the loading passes into a suspended state. The individual grains are continuously in contact with each other, as a result of which the impurities adhering to them are scrubbed off and, together with the flow of washing water, removed from the filter.