Large amount of small wastewater treatment plants does not work properly. One of the reasons could be wrong design of the aeration system. Therefore, the aim of this research is to analyse the performance of two aeration systems used in Lithuanian small wastewater treatment plants. Both aeration systems are designed for the following parameters: 4 PE and 0,8 m³/d wastewater flow. These data correspond to the oxygen requirement of 40,9 g O₂/h. Summarizing the results of the research, it was found out that the capacity of both aerators was insufficient to satisfy the oxygen requirement and ensure proper biological treatment of wastewater.

Article in Lithuanian