Raw water quality variations and its effect on the water treatment processes

Mensah-Akutteh, Hanson; Buamah, R.; Wiafe, Samuel; Nyarko, Kwabena Biritwum

doi:10.1080/23311916.2022.2122152

Cited by 3 publications

(4 citation statements)

References 19 publications

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“…The quality of treated water is highly influenced by source water quality parameters 45 . Descriptive statistics of treated water quality during the 2019–2020 summer are shown in Table 3 .…”

Section: Resultsmentioning

confidence: 99%

“… Initiate research projects to understand the behaviour of the catchment, post bushfires erosion and debris flows and their impact on water quality and treatability and use the findings to develop a reliable risk management strategy. To treat the highly turbid water, coagulant and flocculants concentrations are required to increase 45 . While increasing the chemical concretions, the residuals chemicals in the treated water should be monitored as outline in the ADWG.…”

Section: Resultsmentioning

confidence: 99%

“…To treat the highly turbid water, coagulant and flocculants concentrations are required to increase 45 . While increasing the chemical concretions, the residuals chemicals in the treated water should be monitored as outline in the ADWG.…”

Section: Resultsmentioning

confidence: 99%

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The influence of recent bushfires on water quality and the operation of water purification systems in regional NSW

Jackson,

Krishna,

et al. 2024

Sci Rep

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Over the past decade, escalating extreme weather events have significantly affected New South Wales (NSW), Australia, with unprecedented droughts and intense fires. Yet, the impact on water quality and purification processes remains insufficiently studied. This research focuses on the immediate changes in NSW's environmental water quality and issues in water purification unit operations following the 2019 bushfires. Water samples and maintenance records from affected catchments, intakes, purification units, and reservoirs were analysed. Compared to control samples, post-bushfire water exhibited high turbidity. Sediment and ash shock loads posed significant threats to aquatic ecosystems. Elevated turbidity, suspended sediments, pH, and alkalinity were major concerns for water purification. Raw water samples showed turbidity exceeding 195 NTU, with flocculation and sedimentation most impacted. Immediate measures included sediment traps, aeration, pre-chlorination, and inline monitoring. These findings inform strategies to mitigate bushfire impacts on water quality and optimise water purification in fire-prone regions.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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The influence of recent bushfires on water quality and the operation of water purification systems in regional NSW

Jackson,

Krishna,

et al. 2024

Sci Rep

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“…Both of the water treatment systems (RLWTP and SJWTP) assessed in this study were operating at a maximum capacity using only the traditional treatment methods. Raw water quality is one of the key factors affecting the treatment process efficiency and finished water aesthetics [64]. During high water and flood season, up to 1000 NTU of turbidity was recorded, therefore requiring increased coagulant dosage.…”

Section: Discussionmentioning

confidence: 99%

Lifecycle Assessment of Two Urban Water Treatment Plants of Pakistan

Jamil,

Pervez,

Sarwar

et al. 2023

Sustainability

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Water treatment technologies are striving to retain their ecological and economic viability despite the rising demand, conventional infrastructure, financial constraints, fluctuating climatic patterns, and highly stringent regulations. This study evaluates the lifecycle environmental impact of urban water treatment systems within the two densely populated South Asian municipalities of Islamabad and Rawalpindi, Pakistan. The scope of this study includes a process-based Life Cycle Assessment (LCA) of the entire water treatment system, particularly the resources and materials consumed during the operation of the treatment plant. The individual and cumulative environmental impact was assessed based on the treatment system data and an in-depth lifecycle inventory analysis. Other than the direct emissions to the environment, the electricity used for service and distribution pumping, coagulant use for floc formation, chlorine gas used for disinfection, and caustic soda used for pH stabilization were the processes identified as the most significant sources of emissions to air and water. The water distribution consumed up to 98% of energy resources. The highest global warming impacts (from 0.3 to 0.6 kg CO2 eq./m3) were assessed as being from the coagulation and distribution processes due to extensive electricity consumption. Direct discharge of the wash and wastewater to the open environment contributed approximately 0.08% of kg-N and 0.002% of kg-P to the eutrophication potential. The outcome of this study resulted in a thorough lifecycle inventory development, including possible alternatives to enhance system sustainability. A definite gap was identified in intermittent sampling at the treatment systems. However, more stringent sampling including the emissions to air can provide a better sustainability score for each unit process.

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