I. Overview

With the development of society and people's concern about life and health, coupled with the increasing shortage and deterioration of water resources, the use of water quality monitoring systems has attracted much attention. With the gradual improvement and maturity of water quality monitoring technology, water quality monitoring technology has become the main means of real-time monitoring of water quality and water body conditions in the area under its jurisdiction. 

Conventional laboratory sampling and testing techniques have been unable to obtain accurate information on water pollution in the first time. Moreover, the analysis speed is slow, the operation is complicated, and the stability is poor, especially for the additional drugs, which causes secondary pollution. In addition, with the increasing pollution of water resources, the composition of water samples is becoming more and more complex, and more and more water quality items are tested, which has higher requirements for the performance of water quality analysis instruments. The water quality monitoring methods used in the past are far from meeting the needs of the development of environmental protection work. Therefore, it is imperative to develop an online water quality monitoring system. The water quality online monitoring system overcomes the shortcomings of conventional water quality analysis instruments. The use of wireless data transmission equipment (4G DTU) can provide real-time, continuous, stable, and reliable data transmission for monitoring and transmission.

2,System composition

The system consists of a monitoring center, transmission unit, intelligent site, station room, etc., with functions such as system operation status monitoring, video monitoring, station room status monitoring, remote control, and remote operation.

According to the different needs of customers, the integrated fixed station, container station, buoy station and other forms can be selected. 

Monitoring factors can cover the conventional five parameters, chlorophyll, blue-green algae, ammonia nitrogen, permanganate index, TOC, total phosphorus, total nitrogen, phosphate, nitrate nitrogen, nitrite nitrogen, silicate, heavy metals (Fe, Mn, Pb, Cd, Cr6+), water level, velocity, flow, flow direction, wind speed, wind direction, air temperature, air pressure, temperature, illuminance and rainfall, etc.