Construction of an Automatic Flushing System for Retention Tanks, Including Rainwater Retention Tanks in Urban Stormwater Drainage Systems using Sluice Gate Devices

Application of an autonomous flushing system for retention tanks using sluice gate systems that enable automated release of the stored energy of the water column in the impoundment chamber to achieve highly effective flushing of sedimentary contaminants accumulated in the tank during operation.The system operates automatically through sluice gate arrangements equipped with pneumatic drives and liquid level sensors, allowing precise control of the process.Compared to traditional methods (tilting gates, ejectors, pumps), the proposed system is characterized by low energy consumption, approximately 0.05 kWh per flushing cycle, and a simple configuration consisting of channel sluice gates and their drives, which reduces the risk of failure and simplifies routine maintenance of the tank.Additionally, the proposed solution is cost-effective in operation, with readily available spare parts on the domestic market.The flushing system consisted of valves installed on the front wall of the water damming tank.The facilities, including the installation, were verified by conducting tests to determine the hydraulic and technological conditions (sediment leaching efficiency) during the tank flushing process.