| Integrated Wastewater Reuse in South Pars Refineries 9 and 10: Water–Energy and Economic Assessment |
| کد مقاله : 1211-IWWA |
| نویسندگان |
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بهارک اصغری علمداری * رایمون |
| چکیده مقاله |
| Industrial wastewater management in gas refineries and petrochemical complexes requires an integrated approach that simultaneously considers wastewater generation, treatment performance, water reuse, energy consumption, and economic feasibility. This study develops a scenario-based framework for the integrated collection, treatment, and reuse of wastewater in South Pars Gas Refineries 9 and 10 in southern Iran. The case study uses a reported wastewater treatment capacity of 164 m³/h. Since complete plant-wide flow, contaminant-load, energy, cost, and reuse-demand data were not publicly available, the analysis distinguishes reported site data, literature benchmarks, engineering assumptions, and calculated values. Three hydraulic loading scenarios, corresponding to 60%, 80%, and 100% of the reported treatment capacity, were evaluated. Under the preferred 80% loading scenario, the treatment flow is 131.2 m³/h. Applying a 90% recovery benchmark results in a theoretical reclaimed-water flow of 118.08 m³/h. Considering an assumed beneficial internal reuse demand of 115 m³/h, freshwater displacement is estimated at 910,800 m³/year based on 7,920 operating hours annually. A base energy intensity of 0.50 kWh/m³ corresponds to 455.4 MWh/year. The assessment integrates water-balance analysis, water-pinch principles, water–energy nexus considerations, value engineering, and scenario-based economic evaluation. Under the base assumptions, including freshwater value of $0.50/m³, avoided wastewater-disposal value of $0.20/m³, electricity cost of $0.06/kWh, CAPEX of $1.40 million, and annual OPEX equivalent to 2% of CAPEX, the estimated net annual economic benefit is $582,236, with a simple payback period of approximately |
| کلیدواژه ها |
| Industrial wastewater; Water reuse; South Pars; Gas refinery; Water pinch analysis; Value engineering; Economic assessment; Scenario analysis |
| وضعیت: پذیرفته شده برای ارائه شفاهی |
