In 2016 GSP-Project Ltd completed a complex of wastewater treatment plants in the village of Yazykovo, Bashkortostan. Today, several apartment buildings, most social facilities and administrative buildings are connected to the system. The wastewater treatment plant includes 2 stations BIO-400M for the complete biological treatment of domestic wastewater and industrial wastewater that close to domestic by the composition. Each of stations can be used for purification of domestic wastewater in the village with population of 1,380 inhabitants. The station consists of eighteen module containers and a recessed tank-averager, installed on a concrete base. The station and the averager are coupled together. They form a single technological chain of reception and treatment of wastewater. The station is a warmed building, where all the necessary equipment is mounted.