I. Core Application Industries and Scenarios

1. Water Conservancy and Hydrological Monitoring

• Flood Control and Early Warning for Small and Medium-Sized Rivers: Radar flow meters are installed in key sections of small and medium-sized rivers (e.g., township-level rivers, flash flood gullies) to monitor real-time changes in water level, flow velocity, and flow rate. When the flow rate exceeds the warning threshold, early warning information is pushed to the flood control command center via wireless communication (4G/NB-IoT), buying time for emergency responses such as personnel evacuation and river dredging. They are particularly suitable for remote basins with insufficient coverage of traditional monitoring stations.
• Basin Water Resource Measurement: Equipment is installed at water intake and distribution points of inter-regional rivers to monitor upstream and downstream flow rates long-term, calculate regional water resource allocation, and assist in implementing the “total water use control” policy. For example, in tributary nodes of the South-to-North Water Diversion supporting basin, radar flow meters enable precise management of water resource scheduling.
• Inflow and Outflow Monitoring of Reservoirs/Lakes: Flow monitoring is conducted on reservoir spillways, flood discharge gates, and inflow tributaries. Combined with water level data, changes in reservoir storage capacity are calculated to provide data support for reservoir scheduling (e.g., reserving flood control capacity, allocating irrigation water supply).
• River Ecological Flow Monitoring: In ecologically sensitive river sections downstream of hydropower stations and water conservancy hubs, monitoring is performed to ensure the minimum ecological flow of the river meets standards, safeguarding ecological needs such as fish spawning and aquatic vegetation growth. It serves as a crucial tool for ecological environment supervision.

2. Municipal Drainage and Sewage Treatment

• Rainwater Flood Flow Monitoring: Equipment is installed at the terminal outlets of urban rainwater pipe networks, forebays of rainwater pumping stations, and rainwater confluence sections of urban inland rivers to monitor rainwater flood flow during rainfall. This helps assess urban waterlogging risks and provides data verification for sponge city construction effects (e.g., rainwater infiltration and storage capacity).
• Combined Sewer Overflow (CSO) Monitoring: Radar flow meters are installed at overflow outlets of combined sewer networks to monitor the frequency, duration, and volume of overflow. Combined with water quality data, the pollution degree of receiving water bodies (e.g., rivers, lakes) caused by overflow is evaluated, providing a basis for the renovation of combined sewer networks.
• Inflow and Outflow Monitoring of Sewage Treatment Plants: Temporary or long-term monitoring of inflow to sewage treatment plants is conducted to determine if it exceeds treatment capacity. Simultaneously, outflow is monitored to calculate sewage treatment volume and discharge compliance, assisting environmental protection departments in supervision.
• Municipal Sewage Outfall Monitoring: Flow monitoring is performed at rainwater outfalls and sewage discharge outlets of industrial enterprises and industrial parks. Combined with online water quality analyzers (e.g., COD, ammonia nitrogen sensors), simultaneous monitoring of “flow + water quality” is realized to prevent illegal discharge and leakage.

3. Environmental Protection and Pollution Source Monitoring

• Industrial Pollution Source Discharge Flow Monitoring: Radar flow meters are installed at wastewater discharge outlets of industrial enterprises such as chemical, metallurgical, and food processing facilities to continuously monitor wastewater discharge volume 24/7. They serve as the measurement basis for environmental tax collection and pollutant discharge permit assessment. Due to their non-contact measurement feature, they can adapt to complex working conditions where industrial wastewater contains sediment, suspended solids, and corrosive substances.
• Agricultural Non-Point Source Pollution Monitoring: Equipment is installed at drainage outlets of farmland irrigation areas and centralized rural domestic sewage discharge outlets to monitor the discharge volume and spatio-temporal variation of agricultural tailwater (containing chemical fertilizer and pesticide residues) and rural domestic sewage. This helps evaluate the impact of agricultural non-point source pollution on basin water quality.
• Black and Odorous Water Body Treatment Effect Monitoring: In renovated sections of urban black and odorous water bodies, changes in water velocity, flow rate, and water level are monitored. Combined with water quality indicators (e.g., dissolved oxygen, transparency), the effectiveness of treatment measures (e.g., dredging, ecological restoration, water replenishment and diversion) is evaluated to provide support for optimizing treatment plans.

4. Agricultural Irrigation and Water Conservancy Projects

• Irrigation Canal Flow Monitoring: Equipment is installed on main, branch, and lateral canals of large irrigation areas to monitor irrigation water consumption in real time, realizing “water allocation based on volume” to improve water use efficiency and avoid irrigation waste. Compared with traditional weir and flume flow measurement, radar flow meters require no channel modification and offer more flexible installation.
• Irrigation Pump Station Flow Monitoring: The outflow of irrigation pump stations is monitored to calculate pump station operation efficiency (e.g., irrigation water volume per unit energy consumption), providing data references for energy-saving renovations of pump stations (e.g., replacing high-efficiency pumps, optimizing operating parameters).
• Small-Scale Water Conservancy Project Flow Monitoring: Radar flow meters are installed at water discharge outlets of small rural reservoirs, ponds, and diversion canals to monitor the water supply volume for irrigation and domestic use, assisting in the precise management of small-scale water conservancy projects.

5. Other Special Scenarios

• Mining Wastewater Monitoring: Flow monitoring of wastewater containing coal slime and slag is conducted at discharge outlets of coal mines and metal mines. Combined with water quality monitoring, heavy metal pollution is prevented, and the treatment volume of mine wastewater is accounted for.
• Scenic Water Body Monitoring: Radar flow meters are installed in scenic water bodies such as streams, artificial lakes, and waterfalls to monitor water velocity, flow rate, and assess the circulation capacity and ecological health of landscape water bodies, ensuring the water environment quality of scenic areas.
• Emergency Rescue Flow Monitoring: After natural disasters such as floods and earthquakes, portable radar flow meters are used to quickly monitor the flow of river breaches and glacial lake outburst floods, providing real-time data support for rescue and disaster relief decisions (e.g., personnel evacuation scope, breach closure plan formulation).