Study of effect of antioxidants and dietary fibres on microbiological and physicochemical properties of meat semi-finished products

he article describes examples of membrane technologies (reverse osmosis and nanofiltration) applied for quality drinking water production. In drinking water production practices, natural water often contains contaminants of anthropogeneous origin, such as halogenocarbons. The main principles for controlling the ratio of concentrations of different species in permeate are presented. They are based on the use of membranes with low rejection that require two membrane stages to achieve the designed chloroform removal efficiency. It is demonstrated how the feed water is treated with low rejection membranes on the first stage, and feed water flow is reduced by 30 times, calcium ion concentration increases by 25 times, total dissolved solids value increases by 15 times, and chloroform concentration increases by 10 times. The article demonstrates the results of calculations to evaluate total operational costs for cases where concentrate is reduced by 100–150 times in volume and is withdrawn together with the dewatered sludge as sludge moisture. The presented data indicate that the application of the developed ion separation method reduces total operational costs by 35–45 percent.