Construction industry is a key branch of industry in Tyumen region. Since building materials manufacturing enterprises belong to the category of wet industry, their main task is to adopt water-saving scheme aimed at reducing drinking water consumption and increasing the percentage of treated wastewater return into the recycling water system. The paper describes an option of a recycling water system for an enterprise producing aerated concrete and silicate blocks. All industrial wastewater of the target enterprise is gathered in a holding pond and diluted at times with surface runoff. Most of the wastewater consists of hot condensates formed after autoclave treatment of construction products. They are characterized by increased values of chemical oxygen demand (COD) and petroleum products because of lubricants ingress. The discharge of salt solutions after ion exchanger regeneration leads to a total mineralization increase. On considering the compound industrial wastewater and laboratory testing, a flow chart for industrial wastewater treatment was designed. It includes pre-aeration, oxidation, coagulation, sedimentation, filtration. This flow chart provides water quality suitable for 100% wastewater return to use as additive in feedstock while manufacturing silicate and aerated concrete products.