Prelude

The concept and construction requirements of sponge cities have been proposed. In the convergence areas undergoing rainwater and wastewater separation, considerations for rainwater level and flow control are necessary. Thus, the intelligent interception system is facing new challenges. 

The Smart Diversion System is an integrated process that includes a liquid-powered downward-opening weir gate, flow control valve, rainfall gauge and level gauge, hydraulic station, and control system within the diversion well.;The control system includes the matching accessories.PLCEquipment andSASystem.

The undershot weir gate body is primarily composed of framework, guide slots, rubber sealing parts, gate plates, and opening and closing hydraulic cylinders, among other key components. The weir gate plate is hydraulically driven upwards by the opening and closing hydraulic cylinder./Lower movement to complete the gate leaf's opening or closing state.

The equipment enables a variety of functions, including flushing, water level control, and flow control for box culverts or pipelines.

Washing Feature

1Water Level Control Feature

The control system detects upstream and downstream water levels through acoustic water level sensors, collects the opening position signals of the weir gate, calculates them, and then drives the cylinder according to pre-set water level control commands, controlling the rise and fall of the weir gate to maintain the water level at the predetermined height.

2Traffic Control Feature

The control system monitors upstream and downstream water levels through acoustic water level sensors, collects the signal of the weir gate's opening position, calculates it, and then sends control commands to adjust the height of the weir gate's rise and fall, ensuring the discharge volume reaches the preset value, thereby maintaining a constant flow rate.

3Flush Function

The ultrasonic level sensor detects the upstream water level of the weir gate. When the upstream water level is low, the weir gate closes upwards to retain water. Once the water level reaches the set value, it simultaneously checks the downstream water level of the weir gate. When the downstream water level is low, the weir gate opens rapidly downwards, utilizing the potential energy formed by the water level difference on both sides of the weir gate to complete a flush. The number of flushes per day can be set.

Work Mode

Sunny days:The equipment's interceptor gate was opened due to the dry flow condition, with domestic wastewater being diverted into the interceptor pipe and transported to the wastewater treatment plant.

During rainstorms:The flow control gate has been closed, with cleaner rainwater being discharged into natural water bodies in the later stages.

Project Case

The Li Cun River Project, aimed at improving the living environment along the river, has implemented an effective anti-backflow measure using a downward-opening weir gate after on-site investigation. This approach ensures that wastewater does not flow into the river on sunny days and minimizes the amount of mixed rainwater and wastewater entering the river during rain.