Impact of refuse collection points on respiratory health : a case study in Hong Kong

Abstract

Given the high population intensity and the huge refuse management system in Hong Kong, this dissertation examines the impact of refuse collection points on the respiratory health of Hong Kong residents. It is particularly relevant to explore the relationship between RCP proximity and respiratory health by focusing on lung function indicators among the elderly population. It presents a quantitative study of secondary data for 10,000 residents—a subset population of 364 elderly citizens aged 65 years and above. Tools for data analysis include a multiple linear regression model, logistic regression, and spatial autocorrelation. The study investigated were distance to RCPs and its relationship with lung function. The measures of lung function used were Forced Expiratory Volume in one second (FEV1) and Forced Vital Capacity (FVC). Neural network models are also applied to capture nonlinear relationships and complex patterns. The analysis shows a high negative correlation between proximity to RCPs and lung function. Residents within the 500-meter radius of an RCP have lower values of FVC indicating reduced lung function. There are gender differences, with male residents having higher indicators of lung function compared to their female counterparts. The study also reveals that age, height, weight, and asthma history are significant factors that may predict lung function. The research highlights the public health risks associated with living near RCPs and underscores the need to develop urban planning and waste management policies that mitigate these health impacts. The current placement of RCPs within densely populated areas poses a substantial respiratory health risk, necessitating improved refuse collection systems and the development of health awareness programs for affected communities. The dissertation concludes that proximity to RCPs impacts the respiratory health of the elderly and other highly exposed subpopulations due to exposure to possible pollutants and volatile organic compounds. Recommendations to reduce the adverse effects of refuse collection on urban populations include optimizing RCP sites, enhancing waste management practices, and increasing public health efforts. Further research should investigate additional health outcomes associated with, and the long-term effects of, exposure to refuse collection sites.