city dispose of the waste is a problem You hear often of RECYCLING PUSH DOOR TO DOOR of RECOVERY and RECYCLING refuse, REDUCTION the waste (just think of the volume of packaging in circulation today) as possible and effective solutions the problem of waste disposal. Still open, however, is the debate on so-called " incinerators or, more properly, INCINERATORS . Here are some details on the topic carried over from 2G pupils, after a job search.
"The waste problem has accelerated dramatically, due to the increased use of products and greater production of waste from the factory. Among the alternatives to landfill is designed to heat treatment technologies . Were made the so-called energy plants that, in reality, the incinerators are being dismantled in much of Europe. In addition to these were added to the pyrolysis and gasification. Surely the energy plants provide dramatic improvement of materials to be delivered to landfill, but with what effect on health?
The presence of these plants cause great concern for people living near these areas. Have been reported sensory disturbances and general severe and disabling conditions caused by toxic fumes emitted from burning of waste. In some cases, these incinerators would cause lung cancer..
Cree and Hall, 2nd G
"The incinerators are also called incinerators and are responsible for disposing of separated waste, producing steam and electricity. There are several types of incinerators. L 'incinerator grate well as having a primary combustion also has a secondary which generates considerable turbulence allowing the mixing-combustion air. L ' rotary kiln incinerator is divided into two combustion chambers. The first is shaped like a cylindrical tube in which the ash pile at the end, in the second chamber passes the gas to complete the oxidation reactions. In ' incinerator hearth multi-step the waste is transported through a furnace by moving a mechanical gear. Waste inbound moves from one end while the output from another end..
Ely and Na. 2G
"The plants are mainly used incinerators to dispose of waste through the combustion process at high temperature (incineration), which gives as product gas, ash and fine particles (nanoparticles). In most modern plants the heat produced during combustion of waste is recovered and used to produce steam used , Then, to produce electricity or as a vector heat, for example, for district heating. These systems with technologies for the recovery are indicated by the name of incinerators with energy recovery ..
REVEREND WHAT'S 2G
In Italy there is still no cycle waste disposal "virtuous", that we can ensure the absolute certainty that incinerators do not produce dioxin . Everything depends on the nature of the so-called "eco-bales " for incineration. ecoballe The ashing should not, for example , contain plastics.
But what exactly is dioxin?
Let the point with a study by Sa 2G :
"Dioxin is an organic compound heterocycle. Dioxins, as a class of compounds, are carcinogens persistent, easily accumulate in the food chain. oxidation reactions such as those that take place in incinerators, steel works 2nd-function and other civil and industrial combustion processes are the main producers of dioxins. There are also natural dioxins, such as repellent product from sea sponge, which is a brominated compound..
Other pupils 2G have deepened the discussion on the relationship thermo-dioxin, as following:
"An incinerator is a waste incinerator that uses their calorie to produce electricity and this feature differs from other incinerators. These would be the solution to solve the problem of landfills if they did not produce a substance toxic: dioxin. The dioxin is a toxic substance with high value , odorless and invisible to the naked eye , which facilitates the risk of cancer. Moreover, it was found that these carcinogens may cause serious damage to the liver, kidney, genitourinary system (infertility), the nervous system, causing the embryo and the fetus congenital malformations.
In 1971, Missouri, material derived from the synthesis of hexachlorophene, a truck was accidentally disposed of causing the death of a seventy horses, many birds and countless people and children. After a few years for safety reasons the town was evacuated. In Italy we remember the accident in Seveso, caused by a chemical company that had released a large amount of dioxin in the air. This resulted in the deaths of several thousands of animals and serious consequences for the population, still subject to many studies.
Epidemiological studies, including recent, show a correlation between cancer and exposure to dioxins from incinerators and industrial ..
Below are reflections of Car Mat, 2G :
"People have staged several protests against incinerators close to residential areas.
WHY 'citizens do not want an incinerator near their homes?
-An incinerator is in fact an incinerator that produces energy, which were not old ones.
While less-polluting incinerators in the old, the incinerator still disperses dioxins, which are very harmful for us.
-Dioxins are dangerous, even if treated, little by little, since they accumulate in the body.
-The solution would be prudent to make the collection and reflect on the impact that these substances may have on health..
"In Italy and in Rome we have several types of containers for recycling.
But does the collection? The bins are the most widely used organic waste and paper, minus the plastics and glass. The reason that in Rome people do not use them because you think it is glass and platic is disposed in the same truck. In Rome there is a single bin for glass and plastic . How do you separate them after they are crushed together? Then pressed the various materials can be recovered?
According Report bet we've seen it does not seem possible!
We have the largest landfill to Malagrotta , but this landfill is safe for the residents who live in that area? According to the Report of the investigation no, not at all sure, because it comes from a liquid waste, leachate, which penetrates into the ground is not perfectly sealed. This liquid, penetrating into the ground, causing serious contamination to groundwater polluting it and causing it harm the health of local residents who use this water. All this indicates how seriously set back for us is the conditions in Italy regarding the disposal of waste..
Ang. And Lor., 1G
"On Monday we talked with our teacher of the landfill Malagrotta , which unfortunately is the largest in Europe . Unfortunately there are also homes around , which must be the bad odor waste, pollution of groundwater and high concentration of fine , due to the passage of the garbage truck. The owner of the site was secured, the second episode of the Report , that the landfill had been in its time, waterproofed from the ground through a layer of clay. It seems, however, that the leachate has penetrated into the soil, polluting the ground water of the place. According to rumors, December 31 Malagrotta should close for problems with the gasifier * . The fact that they close the landfill is not a good thing, because it means that the garbage would be distributed in other already overburdened landfills. We think that instead of closing it should improve it, waterproofing, expand it and make it safe.
* Gasifier means a plant used to convert organic materials into gas.. 1G
"THE PROBLEM OF WASTE
In developed countries the production of waste continues to grow. The problem of the accumulation and disposal of waste must be resolved to protect and safeguard our health and our environment. I Waste is divided into:
- Municipal solid waste: paper, glass, plastic ...
- Special waste: oils of cars, chemical waste, sewage sludge ...
- toxic waste: pesticides, corrosive acids
... The objectives for environmental protection are two
- Reduce production of waste, reducing packaging and packaging.
- Recycle waste through recycling. The collection
is done by dividing the waste into four fractions:
- wet fraction: includes biodegradable waste
- dry recyclable fraction : includes wastes that are recyclable
- dry non-recyclable fraction : Includes all waste that can not be recycled
- fraction dangerous: it includes all the toxic waste for the health
The recycling saves energy
Disposal of non-recyclable waste is by incinerators or landfills: Landfill
is usually built from a pit dug in the ground. The recycling of products can be used as an energy source. The choice of the place takes into account several factors: the soil must be loamy and impermeable, must be located away from rivers and urban centers.
The incinerators are burning ovens at 800 degrees. The problem is that they emit dioxin..
down and Angy, 2G
