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Using Surrogate Parameters to Enhance Monitoring of Community Wastewater Management System Performance for

Zhining Shi¹, Christopher W K Chow¹, Jing Gao¹

¹Sustainable Infrastructure and Resource Management (SIRM), UniSA STEM, University of South Australia, Mawson Lakes, SA 5095, Australia.

Sensors (Basel, Switzerland)

|March 28, 2024

Summary

Online UV-Vis sensors offer a new way to monitor small wastewater systems. This study shows how spectral data can predict key water quality indicators, improving treatment plant operations.

Keywords:

UV-Vis community wastewater management system (CWMS)online surrogate parameters wastewater

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Area of Science:

Environmental Science
Analytical Chemistry
Water Treatment Technology

Background:

Community Wastewater Management Systems (CWMS) often lack sophisticated monitoring.
Online UV-Vis sensors show promise for wastewater analysis, but research is limited for small-scale systems.
Existing studies primarily focus on lab-based models or large wastewater treatment plants (WWTPs).

Purpose of the Study:

To demonstrate the effectiveness of field-based online UV-Vis sensors for CWMS.
To develop surrogate monitoring parameters for Total Suspended Solids (TSS) and Chemical Oxygen Demand (COD) using spectral data.
To establish an early warning system for process upsets in small-scale wastewater treatment.

Main Methods:

Utilized an online UV-Vis sensor in a field-based industrial case study.
Applied advanced data analytics to UV-Vis spectral data.
Developed and validated surrogate parameters for TSS and COD measurement.

Main Results:

Identified UV absorbance at 625 nm (UV625) as a surrogate for TSS.
Identified UV absorbance at 265 nm (UV265) as a surrogate for COD.
Demonstrated the feasibility of continuous monitoring for CWMS.

Conclusions:

Online UV-Vis sensors are suitable for monitoring CWMS.
UV625 and UV265 can serve as reliable surrogate parameters for TSS and COD.
This approach supports sustainable operations through improved process monitoring and optimization.