Computer-aided batch process design, techno-economic and uncertainty analyses of bio-clarified water recovery from south-eastern Nigerian brewery wastewater

Computer-aided batch process design, techno-economic and uncertainty analyses of bio-clarified water recovery from south-eastern Nigerian brewery wastewater

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Biocoagulation-flocculation-sedimentation (bioclarification) is one of the main wastewater treatment techniques.Despite its effectiveness in treating brewery wastewater for water reuse, the scale-up process for the reclaimed brewery water from wastewater has rarely been documented in the literature.This study presents the computer-aided process design, techno-economic and uncertainty analyses of bioclarified water production from brewery wastewater.

The base-case simulation model, process scale-up design and economics were performed in Aspen Batch Process Developer.Process profitability indices (Net Present Value: (NPV), Internal Rate of Return: (IRR) and Payback Time: PBT) were evaluated in IMMEDIATE RELEF a user-defined developed Microsoft-excel version 2018.Monte-Carlo-Simulation in Crystal-Ball-Oracle software was used to perform the sensitivity and uncertainty analyses.

The process scale-up simulation results gave annual production capacity (45,000,000 L/year), batch size (9800 L/batch) and annual number of batches produced (4564 batches/year).Base case capacity results showed that the total capital investment, NPV, IRR and PBT are $2,416,358.62, $2,790,608, 36% and 3.

27years respectively.Sensitivity analysis shows that production capacity and product selling price have the highest contribution for both NPV and IRR Summer Shoes respectively.Certainties of base-case model were 90.

27% for the IRR and 99.51% for the NPV.This study showed that brewery wastewater bioclarification scale-up design is feasible.