Solid Waste Management – History and Future Outlook

The disposal of municipal solid waste is the second most major concern for public health in developing countries because of population explosion, rampant poverty and high urbanization rates combined with poor government funding to curb waste management. Factors such as waste composition, technologies and lack of infrastructure have been found to set apart the good management of solid wastes in developing nations. Municipal waste is mainly comprised of paper, vegetable matter, plastics, metals, textiles, rubber and glass. In some countries (developing as well as developed), municipal solid waste is mixed with medical wastes and this may pose health risk to waste handlers and general public.

Burying the wastes has become most preferred method for waste management in many countries. This method is still used in many more countries. Tackling environmental issues has become more important and more preferred than pollution and consumption of unsustainable utilization of resources. Most importantly, the primary objective of waste management is to put emphasis on protecting the people and environment from potentially harmful effects of waste.

Methods of Solid Waste Management

Depending on the types of wastes generated, four methods of solid waste management has been used throughout the history, i.e. dumping, incineration, recycling and waste prevention. Waste generated from household is much different from industrial waste, agricultural waste, medical waste or mining wastes.

When wastes contain any hazardous component, or it has capability to become hazardous with time, poses very serious threat to environment and health. Hazardous wastes generated needs to be handled very carefully, with special techniques. This is one of the major reasons of open landfills are getting replaced with sanitary landfills.

At a landfill, wastes are covered with thick layer of soil. By the late 1950, this practice was very common for waste management across the world. Earlier landfills had considerable sludge and methane emissions, which were harmful to the environment as well as animal and human health. But these issues have been resolved largely by modern disposal methods, which were developed around 20 years ago. Modern landfills are equipped with thick layer of clay followed by plastic sheets. This method was practiced by some nations and still going on.

In 1930-1940, many cities in USA adopted new technology to curb waste issues by burning at high temperature, this method is known as incineration. During initial years, this method was not very efficient and emit very large amount of poisonous gasses, this is the major reason of incinerators shut down during that period. During mid-1970s, scientists modified incinerators to generate energy, which are known as waste to energy plants. But after around a decade, it has become major issue to build these plants, again because of emission issues.

With development of technology, waste burning in advanced form of incinerators became common in 1970s, researchers across the world bet on incinerators or waste to energy plants for solution to energy crisis in 1973. However, with realisation of impact on environment and air quality, it become very difficult to find location to build any waste to energy plants, mainly because of public opposition. Another issue with incinerator is production of ashes, which contain huge amount of heavy metals, toxic and inorganic compounds.

waste-to-energy-plant

Incineration is the most common waste-to-energy method used worldwide.

Future Outlook of Solid Waste Management

The overall concept of wastes needs to be considered economically, it will be more considered as economically viable product if waste is considered as an inefficiency of the production process not as rejected residue of waste product. A permanent rejection or heavy restriction into products which produces waste that cannot be accumulated back into the environment safely.

The major challenge in waste management is to persuade people/community to consider waste as a resource, rather than a liability on society, which can be created with more innovation and technological development of manufacturing industry, waste processing industry and new business model and plans.

This planning system will create circular economy where product value created by inputs (e.g. energy, materials, labour etc.) is extended by enabling a material that goes into circular economy, beyond product life. We go from mineral to metals to product then back to minerals/metals. By understanding economic cycle of waste, people will understand the creation of opportunities to more sustainable product in future with limited resources.

Top 4 Benefits Of Natural Gas

All areas of our lives are literally run by energy. And with various options of energy consumption choices, it’s always good to know the benefits of each one of them so that you make a great consumer choice. Today, in this article, we are focusing on natural gas and are going to take you through some of its top benefits. So if that’s what you have been searching for, then you are at the correct place. Let’s get started!

  1. Clean Burning Fuel

When compared to coal, oil, and diesel, natural gas is cleaner as it emits the least percentage of carbon dioxide and other related harmful chemicals. So when you use one, you don’t have to invest in emission lowering technologies as the efficiency is top notch. Also, since it’s odorless, it makes little contribution to air pollution and doesn’t cause any harm when inhaled by people and animals.

  1. Versatile

There is a given sort of flexibility and convenience that comes with the use of natural gas. With it, you enjoy the ease of starting and turning off as it won’t take much of your time. Also, since it isn’t dependent on the wind or the sun, it can function pretty well when used with solar and wind powers. It’s a source you can depend on no matter the weather conditions outside.

So if this seems like something you would like to try out, then it’s advisable to carefully go through an apples to apples comparison of the various natural gas providers and settle for one according to your needs and financial capability.

  1. Affordable

With the current hard economic times, people are always on the lookout for affordable but efficient options when it comes to products or services affecting their billings. So natural gas couldn’t have been easily accessible at a better time. In fact, it’s by far one of the cheapest energy options in the current market. This is because, even as you calculate the long-term costs of seemingly cheap options such as generators, you will realize that they aren’t as affordable as they might appear in the beginning. Take the fuel and maintenance costs, for example, you will end up spending much more than you can ever imagine.

But this isn’t the case with natural gas. According to recent findings, its cost is expected to remain constant or relatively unchanged at least even for the next decade. So you can be sure that it’s a long-term investment, worth every cent. You make one and forget about unnecessary expenses.

  1. Reliable Delivery Infrastructure

This is probably one of the natural gas‘s primary benefits. This is because you can still receive your delivery of natural gas even during extreme weather conditions such as storms, through the pipes. A case that’s different from other energy sources. Also, the infrastructure is already established in most urban areas.

Final Thoughts

Natural gas is a clean fuel that can be used in various places while keeping the air fresh and clean. Together with this, there are various benefits associated with its use and this includes the affordability, reliable infrastructure, versatility, among others. The above list isn’t exhaustive.