TO toxic waste production does not turn into a time bomb must be reliably buried. Relatively simple and economical way
Water collected on the ground, maybe a hundred years ago, slowly seeping through the Great Filter — soil and porous rocks and accumulate in large underground aquifers, free from any chemical and bacteriological contaminants. This drink water safely. But if we safely bury toxic waste petrochemical industries, we can lose an invaluable source of drinking water. Somewhere toxic substances that dumped many years ago, it was considered the safest way are starting to show up even in deep aquifers. For example, in the US state of Iowa showed signs of chemical pollution of water wells located nearly a hundred kilometers from the landfill.
Most terrestrial organisms — unicellular, and plants, and a man — were in the process of evolution plenty of time to get used to the natural changes in nature, to a shift in the acid-base balance, salinity, oxygen content in the atmosphere. Now we can not count on that and be able to have time to develop a certain defense mechanism. And it’s not just that the rate of chemical production are increasing, but that is now in a new clustered molecules and atoms of oil, coal and gas, and man-made materials do not fall under the influence of the eternal forces of nature: the sun, wind , water and bacteria. The only way — to bury hazardous waste so that it is really possible to be forgotten. There are two aspects: reliability and profitability. You can, of course, to make the liquid waste in sealed containers with thick walls secure from any sverhnerzhaveyuschey become so all this place deep underground in concrete bunkers with different sensors and devices to surface could follow how it’s going. Ever did not seep into the soil, but how much will cost such a system?
…When mixing the cement slurry sometimes you can not guess and plesnesh more water than necessary, but it is worth adding another one to shovel cement, and the solution in the eyes thickens. It takes several hours, and the solution turns to stone. It is now no water, nothing out of it, buried in the ground, do not run out.
On the proving ground specialized transportation management to clean up urban areas and water ducts at Len executive committee to deal with the liquid toxic wastes of chemical production and various industrial dust (cement, expanded clay, from open-hearth furnaces). Dust this, though not poisonous substance, but use it for the second time is not possible, it accumulates in landfills, polluting the environment. So the director of the landfill AP Titov and his co-authors of the present invention VG Dodova Vladimir Kirin, VT Zaytsev and SE Krivege trouble enough and liquid waste and dust-like.
Cement technology turned the inventors of a good idea. And now they are again, and get rid of dust, and from the liquid waste.
In the pit dug in the clay soil impermeable, poured on the tray liquid toxic waste. There also under pressure through pipes fed pulverized waste delivered to the landfill conventional cement carriers. Dried finely divided wastes are mixed with the liquid quickly and at a ratio of two to one optimal gelation occurs. On top of the pit poured a layer of clay about two meters thick, and even poured a foot above normal soil and sow grass, planted trees and bushes.
Dusts waste not only physico-chemically bind and neutralize toxic liquids, but also significantly increase the amount of liquid waste that may be buried in the pit.
New way to the disposal of industrial waste at the proving ground is used for the third year. As for the profitability of the method, the authors calculated that they are released from this case means an annual savings of half a million rubles. And the title at the proving ground right — «Red Forest».