Obtaining genetically safe drinking water from different water supply sources

Purpose. To obtain drinking quality water purified from ferrum, manganese and their mixtures by using microfiltration ceramic tubular membranes made from clay minerals for water purification.

Specifications. The membrane can purify water from Mn(II) compounds up to its maximum permissible concentration in water at an initial concentration of manganese up to 33 mg/dm3, pH 8.4, operating pressure 1.0 MPa. In this case, the specific productivity of the membrane varied in the range of 0.15 – 0.26 m3/(m2 h).

Application area. Water treatment and treatment

Advantages. The use of the technology we offer makes it possible to increase the economic feasibility and accessibility of the process of deferrization and demanganization of contaminated water – the developed tubular microfiltration membranes made of clay minerals with similar efficiency are 40-50% cheaper than those produced by foreign companies.

Technical and economic effect. In order to reduce the cost of membrane production, tubular microfiltration membranes from clay minerals have been developed and manufactured. Such membranes, with similar efficiency, are 40–50% cheaper than those produced by foreign companies.

Description. The technology is based on the use of microfiltration ceramic tubular membranes made of clay minerals, which can provide high efficiency in deferrization and demanganization of water in the form of their compounds. The technology can be used to obtain drinking quality water from various water supply sources, the water in which requires iron removal and demanganization. The technology can be used for source water with a manganese concentration of up to 33 mg/dm3. The technology is more economically feasible compared to similar technologies that use imported membranes. The technology is based on experimental results of studying the influence of Fe(III) and Mn(II) concentrations in the initial solution, its pH, operating pressure, process duration and the presence in it of macrocomponents typical of natural waters (chlorides, sulfates, bicarbonates, calcium and sodium) on the separation properties of the membrane when the total salt content of the solution does not exceed the maximum permissible concentration value for the total mineralization of drinking water.

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