With the national attention to the safety of urban drinking water, various places have strengthened a series of monitoring methods for drinking water safety to ensure timely grasp of urban water quality information. At present, the most widely used method is to conduct real-time online monitoring of drinking water, and understand the specific changes of drinking water quality through the online monitoring system. In order to better understand the composition and function of the drinking water online monitoring system, we have summarized relevant knowledge through collecting relevant data and standards, hoping to help you. The specific contents are as follows.
The online monitoring system for urban water supply consists of water collection and distribution unit, online monitoring equipment unit, data acquisition and control unit, station facilities and auxiliary units, and system management control center.
The water collection and distribution unit shall include water sample collection pump, water intake pipeline, anti clogging device, thermal insulation device, as well as pipes, valves, water pumps and supporting devices used for water distribution, which can collect water samples from monitoring points in real time and distribute water samples to online water quality monitoring instruments directly or after pretreatment.
The online monitoring equipment unit is composed of online water quality monitoring instruments and equipment, which measures water samples and outputs monitoring data.
The data acquisition and control unit shall meet the following requirements
1. Data acquisition shall include the data acquisition instrument and other equipment installed in the monitoring station room, which can collect the data output by online monitoring instruments and auxiliary equipment.2. Data shall be transmitted to the system management control unit through one or more remote communication modes, and the data must be safe and reliable during transmission.
3. The data storage shall include data server and other equipment, which can meet the data storage requirements of the online monitoring system. The storage format shall be a common format. The stored data shall be easy to extract and can be read out in a common computer.
Main facilities of the station building
The station building facilities are mainly composed of on-site industrial personal computer, programmable logic controller (PLC), relevant software and other supporting facilities. The system auxiliary unit shall include stabilized voltage power supply, uninterruptible power supply (UPS), anti-theft, lightning protection and automatic cleaning facilities to ensure the normal operation of the system in terms of safe power supply, lightning protection, etc.The system management control center consists of data server, network equipment and relevant software, which shall have the following functions:
1. Receive water quality data, exceeding standards, faults and other information from monitoring stations, and form short messages and other reports for managers and operators.
2. Process various data received to form various analysis reports, trend charts and analysis reports of water supply quality, which can realize visual display.
3. Organize and edit relevant data and information that can be published.
4. Interface can be reserved to realize data sharing between different management platforms.
The above is the composition and function of the urban drinking water quality online monitoring system
