Department of Chemical Engineering

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Author: search.filters.author.Sangwan, Kuldip SinghSubject: search.filters.subject.Chemical Engineering

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    Waste water treatment plant life cycle assessment: treatment process to reuse of water
    (Elsiever, 2017) Sangwan, Kuldip Singh; Raghuvanshi, Smita
    This paper presents a life cycle assessment (LCA) of waste water treatment plant (WWTP) in a university campus in India. Various emissions coming from the WWTP along with their impact factors are analyzed using a LCA software Umberto NXT Universal utilizing Eco-invent database v3.0. It has been found that the recycled water from the plant provides positive impact on the assessed categories. Effect of treatment system is overriding the effect of recycled water in other categories like terrestrial eco-toxicity potential, global warming potential, particulate matter formation, fossil depletion potential, etc. However, the social effect of untreated sewer and environmental effect of compost produced by the system have not been studied.
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    Life Cycle Assessment of Filtration Systems of Reverse Osmosis Units: A Case Study of a University Campus
    (Elsiever, 2016) Sangwan, Kuldip Singh; Raghuvanshi, Smita
    Environmental concerns are gaining importance in ground water resource management. Reverse osmosis (RO) systems are commonly used for filtration of surface and ground water for domestic and commercial purposes. This study aims to analyze the environmental impacts of electricity, fresh water and material consumption in various types of RO systems. The evaluation tool used for this study is life cycle assessment (LCA) and for this purpose Umberto NXT Universal software with Eco-invent version 3.0 database has been utilized. The inventory analysis has been done for RO systems of four different capacities, viz 25, 50, 250, and 500 liters per hour (LPH). This research also provides comparison of quantitative impacts of different capacity RO systems. All inclusive, the study presents an insight into the environmental impacts of various RO systems used in India and also discuss the alternative technologies for filtration of surface and ground water.