Recycling waste (MSW) - investment in the future
Processing of municipal solid waste is currently one of the hottest topics of the day and ecology. Consumption of humanity products every year only increases, respectively, growing and production rates. The growth of production, which is quite logical, and is accompanied by the amount of waste produced. Environmental monitoring shows of recent years, the current level of contamination Russian cities has increased dramatically. In addition, not the last role in the play ourselves.
Today debris that filled the forests, beaches and ponds wasteland already most of us does not cause confusion and had become for most of us the usual norm of life. People do not resent the fact that the roadside full from polyethylene. However, it is just awful, because today, scientists have confirmed the fact that the collapse of just one plastic bottle needs a few hundred years.
If we do not right now we have the question of waste recycling, we risk leaving their offspring behind one giant landfill. Moreover, pollution municipal solid waste can lead to ecological disaster, because due to debris populations of many species now threatened with extinction.
Since Soviet times, we have learned that waste disposal should be carried out by his removal to a huge landfill. At these landfills and garbage lying just stockpiled. It is quite natural that this has led to the fact that today landfills clogged with debris. Of course, no good cause it could not.
The most horrible thing is that today in many cities in Russia nobody is going to address the issue of waste disposal .Meanwhile, it is one of the most lucrative businesses in the world. Just one plant complete waste treatment plants can become its owner for a stable source of income , since the products resulting from the processing of garbage, are in great demand today , well, raw materials for processing , thanks to the mindless activities of people today have accumulated in excess. So, consider what methods of recycling are the most relevant today.
Solid waste processing options
Currently in the world successfully implemented more than a dozen different technologies for processing of municipal solid waste (MSW). The most widespread of them received thermal methods, which include:
- Burning at landfills
- low-temperature pyrolysis
- Plasma waste recycling
Burning of waste in landfills is the oldest, and at the same time, ineffective way to dispose of garbage. This method helps to significantly reduce the amount of waste, but it is quite harmful from an environmental point of view, since all the harmful substances contained in the debris from the combustion into the atmosphere. Moreover, as we said earlier, is the source of many garbage nutrients, so it is stupid to burn of it can receive money. It is for this reason that the burning is very unpopular method of solid waste disposal.
The low-temperature pyrolysis of harmful emissions into the atmosphere is reduced to zero, so this method is quite promising. In addition, at low temperature pyrolysis and sufficiently large amount of heat that can be used to produce heat and electricity. In addition, if you implement this technology-separated waste processing, then it can get quite a lot of nutrients. Thus, waste recycling by low-temperature pyrolysis is quite reasonable from an economic point of view.
High-temperature pyrolysis of MSW is the most promising of all the methods of thermal processing of waste, because when this method is not presented any rigid requirements to the feedstock, and therefore can be disposed of and unsorted garbage. In this method, the syngas is produced, which can be used to produce heat and electricity. Also formed during this process is perfectly safe secondary products used for the manufacture of ceramic tiles and other building materials.
Another quite promising method of solid waste disposal is filling landfill for landfill gas. With this method of disposal of garbage is covered with a layer of the earth, where it is expansion, accompanied by the release of gas containing methane. This gas, landfill gas named after its purification can be used as conventional natural gas, however, this method is quite advantageous from the economic standpoint. However, it is worth remembering that this method is not suitable for any polygon, but only designed specifically for this purpose.
Finally, another way of recycling is composting it. This method is only applicable to organic waste (food waste, vegetation, paper and so on). Processing MSW composting method allows you to get from waste compost, a valuable fertilizer used in agriculture. However, this method of waste disposal is rarely used in factories for processing solid waste, because the technology which is more suitable for use in private homes.
As you can see, modern factories for processing solid waste can be very cost effective as they are able to produce valuable and sought-after raw materials, fuel and energy from the regular garbage, simultaneously solving the urgent problem of ecology.