Solid and Hazardous Waste
The urban population of the world is projected to reach 5 billion people by year 2030. A reliable cost effective means of collecting and disposing of the solid waste generated by this population, as well as the potentially hazardous wastes generated by the industries that will continue to develop to service this population is essential. The current campaigns to reduce per capita waste generation and to maximize waste recycling will inevitably be extended and expanded in an attempt to optimize resource use and enhance resource conservation. Technological solutions alone will not solve the solid waste problem; there is a need for changes in cultural attitudes to waste production and a greater social cohesiveness to address the issues on a community wide basis.
NJS has been providing consultancy services in the solid and hazardous waste sector since its formation in 1951. From its early experience with waste incineration and nightsoil/septage treatment in Japan the company has carried out a diverse range of projects in this sector across the world. Project examples include waste minimization and clean technology for industrial estates, engineered sanitary landfills including their regeneration for community uses after closure, optimization of waste collection practices including transfer stations, waste segregation, incineration, and composting. In addition to providing design and construction supervision services, NJS also specializes in waste arising surveys, waste generation, operation and maintenance, technology transfer and staff training.
The recommended waste management system must be chosen to suit the particular local circumstances. Waste characteristics and disposal site conditions are only two of the factors that must be considered, different waste management and disposal strategies pose different degrees of technical complexity and these aspects need to be evaluated in the context of the socioeconomic level and culture of the users. Solid waste sector projects carried out by NJS include such assessments to ensure system sustainability.