Review article

The article presents the results of studies regarding the use of the thermal potential of industrial wastewater generated during the production of improved fiberboards, as well as cooling wastewater to a temperature of about 40 ºC. The authors consider the problems of developing and calculating two heat exchangers for heat recovery and effective separation of suspended solids by centrifugation at the pre-treatment stage with subsequent discharge into a common sewage system. Structural design has been completed for two heat recovery options. There has been worked out a shell-and-tube heat exchanger for heating water for a production building with a capacity of 470 kW, as well as a recuperator unit for heating the supply air in the ventilation system of a boiler room with a capacity of 1700 kW. Scientific and practical results of the work make it possible to significantly increase the efficiency of heat use and solve the problems of processing generated wastewater.