Showing 2 results for Hospital Wastewater
Abbas Jahangiri,
Volume 23, Issue 4 (2-2025)
Abstract
Background and purpose: Pharmaceutical pollutants in hospital wastewater pose significant environmental and public health risks. This study aimed to identify and prioritize effective strategies for removing these contaminants from the wastewater of selected hospitals in Markazi Province, Iran.
Methods: This descriptive-analytical study employed a multi-criteria decision-making (MCDM) approach. Initially, a comprehensive review of scientific literature, expert interviews, and consultation with professionals in environmental health and wastewater treatment was conducted. Relevant strategies and prioritization criteria were identified using MAXQDA 2022. Subsequently, the Analytic Hierarchy Process (AHP) method was applied using Expert Choice version 11 software to assign weights to criteria and rank the identified strategies.
Results: Five key treatment strategies were identified: (1) integrated biological, physical, and chemical treatment methods (hybrid systems), (2) advanced oxidation processes (AOPs), (3) aerobic and anaerobic biological reactors, (4) membrane filtration, and (5) activated carbon adsorption. The prioritization was based on five criteria: (1) pollutant removal efficiency (0.357), (2) environmental compatibility (0.241), (3) implementation and operational costs (0.198), (4) technology durability and sustainability (0.123), and (5) implementation complexity and feasibility (0.081). The final priority scores of the strategies were 0.312, 0.256, 0.211, 0.134, and 0.087, respectively.
Conclusion: The findings indicate that hybrid treatment systems combining biological, chemical, and physical processes offer the most effective strategy for eliminating pharmaceutical pollutants in hospital wastewater. These insights can guide healthcare policymakers and hospital administrators in selecting optimal wastewater treatment methods, contributing to environmental protection and water quality improvement.
Abbas Jahangiri,
Volume 24, Issue 1 (5-2025)
Abstract
Background and purpose: Hospital wastewater infrastructure is critical for safeguarding public health and protecting the environment. Deficiencies in the management of these systems can precipitate severe public health and environmental crises. This study aimed to identify and prioritize investment risks associated with hospital wastewater infrastructure.
Methods: This applied case study was conducted in a general hospital in Arak, Iran, during April 2025. Initial risk identification involved a comprehensive literature review and semi-structured interviews with 14 experts, with data analysis facilitated by MAXQDA 2022 software. Subsequently, a Failure Mode and Effects Analysis (FMEA) approach, utilizing a customized checklist, was employed to score each identified risk based on its severity, probability of occurrence, and detectability. The Risk Priority Number (RPN) for each risk was then calculated using Microsoft Excel. Finally, risks were ranked in descending order according to their RPN values.
Results: A total of 23 key risks were identified and categorized into five principal areas: design, technical, environmental, operational, and managerial. The highest RPNs were attributed to "lack of pre-treatment systems," "insufficient capacity planning," and "wastewater leakage into surrounding soil". Additionally, managerial and operational risks, such as "insufficient budget for maintenance" and "shortage of skilled personnel," were recognized as significant aggravating factors for other risks.
Conclusion: The findings underscore that many critical risks within hospital wastewater infrastructure originate from fundamental weaknesses in initial design and ongoing management. The FMEA method proved to be an effective and systematic tool for identifying and prioritizing these risks, thereby facilitating improved engineering and managerial decision-making and enhancing the overall effectiveness of investments in this vital infrastructure.
