The primary aim of sustainable solid waste management is to address concerns related to public health, environmental pollution, land use, resource management and socio-economic impacts associated with improper disposal of waste. “This growing mountain of garbage and trash represents not only an attitude of indifference toward valuable natural resources, but also a serious economic and public health problem”. These words from the former US President Jimmy Carter is enough to understand the social, economical and environmental impact of mismanaged waste disposal and an urgent call for help to look for innovative, smart, sustainable and effective waste disposal techniques.
According to UNEP, around 3 billion tons of waste is generated every year, with industrial waste being the largest contributor, especially from China, EU and USA. There has been a steady increase in the quantity of e-wastes and hazardous waste materials. The UNEP study observed a drastic shift from high organic to higher plastic and paper corresponding to increase in the standards of living and also made an interesting correlation between the higher GDP and the quantity of municipal waste collections.
In developing and under-developed countries, the use of open dumps to dispose of the solid waste from different sectors is staggeringly high compared to the developed and high income countries that are more dependent on recycling and use of sanitary landfills that are isolated from the surrounding environment until it is safe.
There are serious concerns on the increasing cost of waste disposal, especially in developing countries. It is estimated that around $200 billion are being spent on waste management in the OECD countries for both municipal and industrial waste.
For developing countries, at least 20-50% of its annual budget is devoted to waste management schemes and strategy that has been reported insufficient and inefficient at the same time. In these countries, use of unscientific and at times unethical and outdated waste management practices have led to various environmental repercussions and economic backlashes. Even the relatively small proportion of waste recycling and other waste minimization and re-use techniques for waste disposal is alarming.
As sustainable solid waste management evolves through waste awareness among general public, efforts within the industry, and waste management becoming not just an environmental concern but a political and strategic apprehension too, there are realistic chances of advancements and scientific innovations.
Innovation will then give birth to revolutionary and self-sustaining ideas within the industry, which earlier focused on basic waste management, will now grow towards maximum utilization and sustainable management of waste.
In the last couple of decades, sustainable solid waste management has become a matter of political significance with robust policies, strategies and agendas devised to address the issue. The good thing is that the industry has responded with innovative, cost-effective and customized solutions to manage solid wastes in an environmental-friendly manner.