Investigation of bacterial contamination of a mixed-bed filter of a TPP water treatment plant by IR spectroscopy

During the operation of water treatment plants at thermal power plants with combined cycle gas turbines, colonies of microorganisms are formed, which negatively affect the operation of the equipment. The types and number of bacteria depends on the source of water supply, seasonality, and water-chemical regime. The aim of the research is to analyze and quantify the bacterial contamination of a mixed-bed filter in a laboratory setup. To determine the number of bacteria and the contamination of ion-exchange resins on the mixed-bed filter unit, the following methods were used: ATP luminometry with a System SURE Plus device, evaporation and separation of a mixture of substances under reduced pressure on an IKA RV rotary evaporator and infrared spectroscopy of substances (FTIR, Shimadzu). As a result of the research, data on the number of bacteria in water samples were obtained on a laboratory installation of a mixed-bed filter, a spectral analysis of the bacteria present in the regenerative solution was carried out. The number of bacteria was determined at each stage of research. On a laboratory installation of a mixed-bed filter, the process of development of microorganisms that reduce the performance of ion-exchange resins has been revealed.