The potential role of safety, health, environmental quality (SHEQ) management systems in sustainable landfill management in Zimbabwe-a review

Abstract

Solid waste management is a demanding issue globally. Zimbabwe is among nations in Southern Africa that faces political and socio-economic challenges in solid waste management including landfill management. However, proper landfill management is critical to minimise environmental health risks of solid waste and Zimbabwe is no exception. Therefore, this paper focuses on sustainable landfill management in Zimbabwe based on SHEQ management systems by reviewing existing literature. Literature denotes that generation of solid waste destined for landfills accelerate due to increase of population, urbanisation and diseases. Hazardous and non-hazardous solid waste from institutions, households and industries is transported by municipalities to landfills. Solid waste is disposed and left uncovered or compacted on improperly engineered landfills devoid of gas and leachate control systems. Landfills in Zimbabwe are far from sustainable since they cause negative impacts to terrestrial, aquatic and atmospheric ecosystems and human health is not spared as hazardous wastes are found at landfills. Nevertheless, literature reveals that SHEQ management systems are vital to attain sustainability in the realm of landfill management. SHEQ management systems contribute to continuous improvement of landfills management strategies through application of the Deming cycle. SHEQ management systems that support protection of workers and waste workers are included. The system supports inclusion of various stakeholders, correct documentation of data and conformity to national and international legislation, policies and standards when dealing with waste. SHEQ management systems support recycling, reuse and recovery processes during waste management. The review concludes that SHEQ management systems are necessary to reach sustainable landfill management in Zimbabwe.