A water plant in Xihu District, Hangzhou

Online Water Quality Monitoring Project for Water Treatment Plants

Online water quality monitoring projects are critical to ensuring the safety of water supply, particularly in water treatment plants. Such projects are typically designed to monitor water quality parameters in real time, enabling prompt detection of and response to any issues that may affect water quality.

Project Overview

Objective: To achieve continuous monitoring of the water source, various stages of the treatment process, and finished water, ensuring that the water supply complies with national or local sanitary standards.

Monitoring Parameters: Temperature, turbidity, pH, dissolved oxygen (DO), electrical conductivity, ammonia nitrogen, and residual chlorine.

System Composition

Online Monitoring Sensors: Deployed at key locations such as the intake, different stages of the treatment process, and the outlet to collect water quality data in real time.

Data Acquisition and Transmission System: Transmits the data collected by the sensors to a central control system for analysis.

Central Control System: Integrates data analysis, storage, and visualization functions, and supports remote access and control.

Alarm System: Automatically triggers an alarm when monitored parameters exceed preset thresholds, alerting operators to take corrective actions.

Implementation Steps

Planning and Design: Determine monitoring points, select appropriate monitoring parameters, and define the technical (approach).

Equipment Installation: Install the online monitoring equipment and complete commissioning to ensure proper operation.

System Integration: Integrate the new system with existing water treatment facilities to ensure seamless operation.

Training and Operation & Maintenance: Train relevant personnel, establish a maintenance plan, and ensure long‑term stable operation of the system.

Expected Benefits

Improve water quality monitoring efficiency and reduce labor costs associated with manual sampling.

Enable rapid response to changes in water quality, preventing potential public health risks.

Support scientific decision‑making and optimize water treatment process flows.