The aim of the work was the development of an effective and environmentally safe filter element for drip irrigation, the main component of which is burnt mine waste. Acceptability of the material in question is set up on the basis of guidelines for the hygienic assessment of filter materials and sanitary regulations and standards 2.1.4.1074-01. The rock composition was determined by a scanning electron microscope Tescan Mira 3 LMU equipped with an energy-dispersive analysis of the characteristic X-radiation X-Act, radiation measurements were carried out using a dosimeter-radiometer MSK-AT 1117. As a result, the primary content of the basic substances in the composition was determined: Na and Mg – 1.4 %, Al – 26 %, Si – 47.4 %, P – 0.4 %, S – 1.5 %, K – 5.0 %, Ca and Ti – 1.1 %, Mn – 0.3 %, Fe – 13.9 %, Ba – 0.4 %, which allows to establish the substance hazard category - IV class. The technology of manufacturing a filtering material is presented, which includes fractionation of the burned rock, washing, drying, mixing all components in prescribed proportions, laying in molds and drying out. On the basis of the experimental data, a ternary three-dimensional surface diagram has been constructed, which makes it possible to determine the time for flushing the burnt rock of various compositions of the fractions used. Thus, the filter element, made on the basis of burned mining wastes according to the proposed technology, meets the requirements for filtering materials used for drinking water purification and can be used for drip irrigation.
Key words: drip irrigation, water purification, filter element, manufacturing technology, waste products, burnt mine waste, chemical composition.
