SK69796A3 - Waste landfill at the inclined terrain - Google Patents

Abstract

The invention concerns the waste dump made by incising the b ody of the dump into the slope terrain, which enables to build th e waste dump also in the terrain with lithology not suitable for loading. After closing the dump built according to the invention the original character of the country is not affected.

Description

LANDFILL OF WASTE IN FIELD DEPRESSION

DESCRIPTION

TECHNICAL FIELD

The invention relates to landfill management, its greening, a new spatial solution and the impact of the phased construction of functional units on the timing of the release of investment funds.

BACKGROUND OF THE INVENTION

At present, landfills can be characterized as geometrically relatively regular bodies with a ground plan of a slightly irregular square, rectangle, or. a polygon; ie with a small dimensional difference.

The insulating design of the landfill is legally determined by the generalized characteristics of the subsoil of the future construction and the degree of toxicity of the stored material. The position and swing of the groundwater level is a determining aspect of the recess of the entire body. The above criteria already affect the site selection of the future landfill site, its construction solution and the cost of the construction.

The relatively problem-free procedure is in the field of a flat character. However, landfilling has to be solved also in mountainous locations, geologically, morphologically, hydrogeologically and hydraulically complex. The morphology of these terrain depressions, whose occurrence is relatively frequent in our natural conditions, has been a decisive aspect of the exclusion of these terrains for the construction of landfills.

The proposal of a two-storey landfill means the possibility of using the previously unsuitable landfill for landfilling according to all valid building and environmental legislation.

SUMMARY OF THE INVENTION

Based on consideration of the possibility of landfilling at two levels in the vertical plane, we will achieve practically 100% utilization of the volume of terrain depression for building a landfill.

It is preferable to have about half to two-thirds of the depth of such terrain morphology, which in volume terms represents mostly one third to one half of the total volumetric capacity of the site, at the bottom of the tapered configuration to be used to landfill material requiring no leakage protection measures. Such a material may be, for example, inert waste.

Landfilling in this lower part, ie on the 1st floor of the landfill, is already a construction work on shaping II. floor of this landfill.

II. the floor of the landfill is adjusted according to the toxicity of the stored material, which may be solid municipal waste, or slag and fly ash. Capacity of this II. The volume of the site is limited by the volume of the site in the distribution for both types of waste. It is possible to increase the volume of II. storeys by building dams. However, it is necessary to consider the economic aspect of the land surrounding.

In the protection of II. It is advantageous to use a sorbent material capable of permanently binding toxic eluates from the seepage water through the stored material. The thickness of the sorbent layer is determined by the degree of toxicity of the stored material.

Discarded old tires are advantageous to use as a stabilizing element in the protection of interior space II. floor of landfill. In this way, their disposal is also partially addressed.

From the point of view of securing the investment costs of such a landfill, it is important to divide this two-floor system into functionally separate units, the two-floor cassettes in the horizontal direction. In this way it is possible to start the construction of a landfill with a partial cost sufficient to put into operation a separately functioning part of the whole landfill. A potential source of investment for the continuation of landfill construction will also be the income from landfill in a closed storage area.

BRIEF DESCRIPTION OF THE DRAWINGS

The construction solution of a two-storey landfill illustrates, but does not limit the example shown in the attached cross-sectional drawing of the storage area in the field depression in FIG. First

EXAMPLE OF THE INVENTION

The narrower lower part of the terrain is a landfill that requires no protective measures. In Figure 1 it is the first floor. II. storey is a landfill of municipal solid waste, event. dump cinder and fly ash. Is you belong insulated modified. It is preferable to provide the bottom insulation II. storeys eg. according to detail A, wherein the gravel bottom surface of the landfill with a stabilizing element, e.g. the old tires 1 overlap the sorbent layer 2 of thickness according to the toxicity of the stored material. These two layers are above the gravel bed

-3 with drainage 3, under which there is still geotextile with insulation 4 as required and compacted clay soil 5.

The device according to the invention can be used wherever the site morphology creates U-shaped or depressed sections. V-shaped, especially in a rugged mountain environment.

Claims (6)

1. Landfill deposition in the field of depression is characterized by the fact that the entire capacity of such a site is solved in two differently designed floors with an insulating layer between them according to the properties of the waste material. 2. The installation according to item 1 is characterized in that the first floor forms the base for the upper landfill for the second floor. floor. 3. The installation according to point 1 and proposal 2 is characterized in that the first floor consists of waste that can be landfilled in the given lithological subsoil without further insulation measures. 4. The device according to item 1, characterized in that the bottom of the landfill at II. The floor consists of gravel with old tires (1), which covers a layer of sorbent (2) under which there is a gravel bed with drainage (3). The last two layers are geotextile with insulation (4) and compacted soil (5). 5. The device according to point 1 and proposal 4 is characterized in that in the necessary protective layer of the landfill at II. Above standard ecological protection with sorbent (2) is included in order to capture contaminants from the internal waters of the landfill. 6. The device according to item 1 is characterized in that the entire length of the terrain depression is built in parts, functionally separate units - cassettes.