Electrical Control Choke Well
Product Description
Electro-controlled regulating wells are used for sponge city construction, black and odorous water body treatment, intelligent drainage, and other stormwater and wastewater separation projects. They enable automatic switching and separation of rainwater and wastewater within the rainwater pipeline, ensuring that the wastewater at the front end of the rainwater pipeline and a small amount of initial rainwater enter the wastewater pipeline, thus preventing the contamination of natural water bodies like rivers and lakes. Additionally, they prevent excessive rainwater from entering the wastewater pipeline, reducing the burden on wastewater treatment plants. This not only purifies natural water bodies but also conserves resources for wastewater treatment, making it an upgrade project for sponge city construction, black and odorous water body treatment, and the purification of natural water bodies.
Primary Components
The electrical control weir main structure is a steel-concrete construction, equipped with interception gates, stormwater gates, water intake gratings, sewage lifting devices, electric actuators, pressure sensors, rainfall gauges, weatherproof control cabinets, and intelligent cloud monitoring platforms. The gates are made of stainless steel plate throttle gates or butterfly valves, and the actuator is a submersible type with IP68 rating, capable of long-term underwater operation. When sewage cannot flow freely, an additional sewage lifting device is selected, using a coupling mechanism. The valve pipes are made of 304 stainless steel, easy for installation and maintenance. To prevent pump clogging by debris, a 304 stainless steel lifting basket grate is installed at the water intake, intercepting large debris. The lifting basket is connected with a special coupling hook, which can be lifted along the hook guide rod for cleaning without entering the well. The monitoring system is controlled by pressure sensors and rainfall gauges, allowing gate operation to be controlled by rainfall volume or by monitoring井下 liquid level changes through the pressure sensor. Chain control is implemented to ensure the accuracy of monitoring. The control system utilizes an intelligent cloud platform for remote operation and monitoring, achieving unattended operation with multi-point monitoring capabilities.
Operating Principle
On sunny days, the intercepting gate is open and the stormwater gate is closed. Partial wastewater within the pipeline flows into the sewage pipeline via the intercepting outlet, or is pumped up to the sewage pipeline by the wastewater lift station, achieving zero direct discharge of wastewater on sunny days.
During rainfall, the initial surface runoff is relatively polluted, which can contaminate river water if it enters. By using a rainfall gauge to determine the amount of rainfall or a water level sensor to detect the well water level, delay the opening of the interception gate and stormwater gate to ensure that the polluted initial runoff enters the sewage pipes.
During the latter stages of rainfall, the water is relatively clean. When the liquid level sensor detects that the water level inside the well exceeds the set level, the intercepting gate is closed and the stormwater gate is opened, allowing the rainwater to drain into the river. When the rainfall stops, the water level in the well decreases. Once it falls to the set low level, the intercepting gate is opened and the stormwater gate is closed, restoring the initial state.
The automated system utilizes a professional SCADA system, which may enable the following functions:
(1) Remotely view the operating parameters and status of equipment, helping customers to check the equipment's operation status at any time.
(2) Constantly monitor and receive equipment alarm notifications, promptly grasp the status and causes of equipment failures.
(3) Allows for remote upload, download, and debugging of PLC programs, eliminating the need for on-site travel and reducing travel expenses.
(4) Capable of saving and viewing historical data for easy tracking of the equipment's past operational status.
(5) Real-time footage can be monitored via the camera, allowing for constant oversight of the on-site situation.
