09,18,2026 11 views
background
The drainage network, as a key facility for urban rainwater and sewage collection, transportation, treatment, utilization, and discharge, plays a crucial role in controlling water pollution and preventing waterlogging. According to different functions, drainage networks are mainly divided into two categories: rainwater networks and sewage networks. The rainwater pipe network is mainly responsible for the transportation and discharge of rainwater, usually directly discharged into surface water bodies; The sewage pipeline network is responsible for collecting domestic, industrial, and commercial wastewater, and transporting it to sewage treatment plants for unified treatment. After meeting the standards, it is discharged into surface water.
However, with the rapid development of industrialization and the sharp increase in urban population, the discharge of industrial wastewater and urban sewage has significantly increased. Currently, China has become one of the countries with the largest and fastest-growing sewage discharge in the world. However, the sewage treatment capacity is relatively lagging behind, and a large amount of untreated sewage is directly or indirectly discharged, and there is even a phenomenon of some large polluting households secretly discharging and leaking. In addition, due to the backwardness of pipeline infrastructure, frequent problems such as rainwater and sewage mixing, and industrial wastewater discharge into domestic sewage pipelines have seriously polluted natural water bodies and ecological environments, affecting the treatment process of sewage treatment plants and causing adverse effects on people's quality of life and health.
Monitoring requirements and standard specifications
In order to timely and accurately grasp the operational characteristics of urban water supply and drainage networks, monitoring key parameters such as liquid level, flow rate, and flow rate is particularly important. By obtaining continuous data of these parameters, we can grasp their changing patterns, provide effective data support and governance basis for management departments, and assist in the management and maintenance of sewage pipelines.
This plan strictly follows multiple national and industry standards, including but not limited to the "Water Quality Standards for Sewage Discharge into Urban Sewers"（GB/T 31962）Pollutant Discharge Standards for Urban Sewage Treatment Plants（GB18918-2002）Technical Requirements for Online Monitoring System of Urban Drainage Water Quality and Quantity（CJ/T 252-2011）Wait, ensure the accuracy and reliability of monitoring data.
Overview of System Solutions
The drainage network flow monitoring system is designed based on the Internet of Things architecture, with Doppler ultrasonic flowmeter as the core, combined with low-power monitoring terminals and monitoring platforms, to construct a smart flow monitoring system. The system adopts ultrasonic Doppler, lithium battery, and low-power consumption technology, effectively solving the monitoring problems of flow velocity, liquid level, and flow rate in non full and full tube states, while reducing the construction and maintenance costs of the system.
system architecture
The system adopts a grid monitoring strategy, deploying Doppler ultrasonic flow meters at key nodes of the pipeline network to monitor real-time data such as liquid level, flow velocity, and flow rate of the pipeline network. These data are uploaded to the data platform through self powered micro power consumption monitoring terminals. The platform stores and analyzes the changing trends of data from various monitoring points, and combines grid models to provide early warning and traceability for illegal discharge, leakage discharge, and urban waterlogging. The system adopts a four layer architecture design of the Internet of Things, including the perception layer, network layer, data layer, and application layer.
System Features
High precision measurement: using the principle of ultrasonic Doppler velocimetry and velocity area method to measure flow rate, with high measurement accuracy and minimal environmental limitations.
High integration sensor: supports simultaneous measurement of flow rate, liquid level, flow rate, and temperature, with sound speed and temperature compensation for more accurate measurement.
Advanced hydraulic models: good measurement stability and high environmental applicability.
Low maintenance cost: biomimetic appearance design, effectively reducing garbage obstruction, equipped with self-cleaning device,IP68Waterproof design.
Long battery life: Built in rechargeable lithium battery, supports solar charging and discharging management, and has low maintenance costs.
Convenient Communication: Supports multiple communication protocols and interfaces, making data integration convenient.
monitoring device
The main monitoring equipment of the system includes Doppler ultrasonic flowmeter and low-power monitoring terminal. The former integrates flow rate, liquid level, temperature, and flow measurement, suitable for measurement in various full and non full pipe states; The latter integrates data collection, storage, communication, calibration, and alarm functions, suitable for online monitoring in scenarios without power supply.
The construction of an online monitoring system for drainage networks is of great significance for improving the management level of urban drainage networks and ensuring water environmental safety. Through real-time monitoring and data analysis, it is possible to effectively prevent phenomena such as illegal discharge and leakage, ensuring the efficient operation of drainage networks and sewage treatment facilities.
