The recycling of waste a four pillars upon which the process of waste management or the so-called golden rule 4R, which should increase the awareness of it, namely:
1 - Reduction:
The intention here is to reduce the raw materials used, thus reducing waste, is this:
Either by using fewer raw materials.
Or by using the raw materials produce less waste.
Or by reducing materials used in packaging such as plastic, paper, metals, and this calls for environmentally conscious of both the investor and the product; For example, in the United States committed itself to a lot of producers of liquid soap with its focus; until they are packed in smaller packages, or the production of toothpaste without external packaging cardboard, and this so-called (Waste minimization).
2 - Reuse:
This means - for example - re-use plastic bottles for mineral water for example, after sterilization, and re-fill bottles and jars after use, this method can reduce the volume of waste, but it calls for environmentally conscious the general public in how to dispose of their waste, and a process of sorting is simple for each of the waste plastic and paper, glass and metal prior to disposal, we find in both Japan and the United States rubbish bins color in each region and Street; so that the dumping of waste paper in green funds, waste plastic, glass and metal in the blue boxes, and remnants of food or so-called biomass in black boxes.
3 - Recycling:
It is intended to recycling is the reuse of waste; for the production of other products of lower quality than the original product.
4 - Recovery:
And use the technology recovery heat in many countries, especially Japan; for safe disposal of solid waste, hazardous waste solid and liquid, and hospital wastes, and sludge from sewage and industrial, and through the burning of such waste under the operating conditions such as temperature and duration of combustion, so to control emissions and the extent of compliance with environmental laws. This method is characterized by the disposal of 90% of the solids, and converted to thermal energy can be exploited in industrial processes or to generate steam or electricity.
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