Practical guide for the optimisation of coagulation and flocculation through jar testing

Water Industry Operators Association QLD 2022

Dr Andrea Gonzalez

Jar testing is a method that simulates coagulation and flocculation and can provide useful data to help operators to optimise the water treatment  processes. Jar testing can be time-consuming and require technical knowledge to assess the results. However, jar testing can be a powerful tool to save money and enhance water quality as it helps determine which treatment chemical, dosage and dose will work best with their system’s raw water.

A jar testing practical guide was developed, including experiment set-up, operational procedure and data analysis to assist operators in overcoming the main constraints of jar testing.

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Australian Financial Review

There are many opportunities for women wanting to become engineers, but they need to be fearless about being the only woman in the room.

Dr Annalisa Contos speaks to the Australian Financial review about the challenges and rewards of a career in engineering.

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AWA Young Water Professional Conference 2020

Lucy Parsons

A project was run to track the reintroduction of fluoride to the Parkes Shire Council water distribution system. The tracer study provided insight into system operation, verified the disinfection critical control point and identified opportunities for improvement in system understanding.

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AWA Source

Water engineer Dr Annalisa Contos has been a trailblazer for women in STEM and the utilities sector, and she’s finally being recognised for her work.

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Water Industry Operators Association 2020

David Bartley

Setting control limits statistically ensures that data that requires attention is highlighted to the operator to ensure action can be taken to prevent breach of CCPs or licence limits and allows continuous improvement over time.

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Water Industry Operators Association 2020

Lucy Parsons

Water quality studies on the 148 km B-section pipeline including the development of P&IDs, an EPANET model and chlorine decay studies investigated improvements to the systems. Operational risk associated with the installation of a new rechlorinator  were assessed and mitigation measures developed.

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Global Water Pathogen Project

Dr Annalisa Contos, Natalie Crawford

This case study examined whether public health risks from a local government operated recycled water scheme were appropriately managed through treatment and non-treatment barriers (end user controls). The pathogen log10 reduction requirements for recycled water for a mix of uses including food crop and municipal irrigation were determined. The four recycled water plants were verified to assess if they were meeting these requirements and whether the non-treatment barriers (end user controls) were adequate

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Global Water Pathogen Project

Annalisa Contos (Atom Consulting),  Andrew Francis  and  Julian Fyfe (Parkes Shire Council)

This case study shows how to determine the required pathogen reductions for the reuse of effluent for irrigation of sports fields, golf course and community open spaces and select and design the appropriate process units to achieve the necessary pathogen reduction.

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WaterRA

Natalie Crawford, Dr Annalisa Contos, Claire McInnes

This research undertaken by Natalie Crawford can help utilities to identify and assess the extent of microbiological contamination risk from pipeline renewal and repair works and identify measures to manage these risks.

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Kamal Fernando Memorial Lecture Institution of Engineers Sri Lanka, NSW chapter

Dr Annalisa Contos

Human error is often cited as root cause of incidents and accidents. In this talk Dr Contos introduces key topics within the field of human factors. The talk addresses the environmental,  organisational and job factors as well as human and individual characteristics, which influence behaviour at work in a way which can affect health and safety. Drawing from examples in the water industry Dr Contos discusses how human factors are important to both process and product safety.

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