I. Project Background

In recent years, heightened environmental awareness and stringent drinking water safety standards have underscored the critical importance of water quality monitoring. This case study details the successful implementation of an online water quality monitoring system at a municipal tap water plant. By deploying advanced online instruments, the system achieves comprehensive, real-time surveillance of source water, treatment process water, and finished water, thereby ensuring the safety and quality of the residential water supply while aligning with regulatory requirements.

II. Project Overview

Project Name: Upgrade of Online Water Quality Monitoring System at a Municipal Tap Water Plant

Implementation Period: July to August 2024

Location: Tap Water Plant Facility

III. Project Requirements

The project aimed to address several key needs: real-time and accurate monitoring of essential water quality parameters, including turbidity, pH, residual chlorine, and streaming current; enhanced monitoring efficiency through automation to minimize manual intervention and reduce operational costs; and seamless remote data transmission with cloud storage for accessible monitoring and analytical capabilities.

Challenges included ensuring stable and reliable data transmission across dispersed monitoring points, integrating diverse data protocols from various devices for efficient reporting, and establishing a secure, real-time cloud platform to safeguard data integrity and accessibility.

IV. Solution

For device selection and installation, the FLUMSYS 10SC Online Streaming Current Analyzer was strategically positioned at critical treatment stages within the plant. This instrument continuously monitors the streaming current of fluids in pipelines, enabling precise control of flocculant dosing and optimizing the water treatment process. Complementing this, JENSPRIMA's innoCon6800 series online water quality analyzers were deployed to provide real-time measurements of residual chlorine, turbidity, and pH levels across source water, pre-filtration, post-filtration, and finished water stages, ensuring adherence to quality standards.

Data integration was facilitated through 4-20mA and RS485 interfaces connected to the analyzers, utilizing the Modbus protocol for efficient communication and initial data processing. The JENSPRIMA Cloud Platform, incorporating technologies such as dynamic-static separation and load balancing, ensured robust data security and real-time performance. This allows users to access device status, historical data, and alarm notifications conveniently via web browsers or mobile applications, supporting proactive management and decision-making.

V. Implementation Effects

The upgrade yielded significant improvements: water quality monitoring efficiency was markedly enhanced through automation and remote data capabilities, reducing reliance on manual checks and boosting accuracy. Operational costs were effectively lowered by optimizing flocculant usage, eliminating excess consumption and associated expenses. Additionally, data management became more streamlined with the cloud platform, enabling effortless data analysis, sharing, and reporting, which in turn strengthened the plant's capacity for informed water quality management and operational oversight.

VI. Product Application & Extension

This successful project not only elevated the monitoring capabilities of the municipal tap water plant but also serves as a valuable reference for similar initiatives in the water treatment sector. Looking ahead, the integration of emerging technologies like the Internet of Things and big data analytics is poised to further advance water quality monitoring systems, driving greater intelligence, integration, and reliability. Such developments will continue to support environmental sustainability and public health by ensuring safer drinking water supplies.