- Landfill. This is the most practiced method in the world. More often, landfills are old mining areas and abandoned quarries. It is considered to be the most cost effective way of disposing waste. The wastes are layered into thin spreads, compacted then covered with a layer of earth and more layers are added over time.
- Integrated disposal. Primarily used for municipal waste. The process involves the minimizing of the materials, separating and collecting, then reusing and recycling non organic segment. Organic materials are used for energy and fertilizer.
- Incineration. Sometimes referred to as ‘thermal treatment’, this method involves burning of the trash. This method is used to transform waste into gas, steam, heat and ash.
- Water decomposition. The process involves the removal of the organic materials and decomposes them at high temperature and pressure.
- Recycling. This means taking some of the waste materials and transforming them into new useful products.
- Plasma gasification. This consists of heating the disposed waste to over 10,000 degrees converting these wastes into
Plasma gasification is today’s modern technology in eliminating garbage and landfill problems. The process involves the use of a high tech plasma torch to burn waste in a closed, controlled environment with no hazardous emissions. It is said that the process is 2/10th of 1% away from zero waste. One of the byproducts of gasification is hydrogen which can be a separate source of power. Waste disposal continues to be a pressing challenge as population grows, along with numerous industrial developments in many countries around the world. Long ago, residents’ trash was brought and dumped in an isolated place, far enough from the city or village. Today, instead of the open dumping, trash is collected and transported to landfills to be buried. Today, methods such as plasma gasification, incineration, recycling and ocean dumping offer better alternatives. Some of the methods of disposing waste include the following: