RU21878U1 - STORAGE FOR SOLID DOMESTIC WASTE (OPTIONS) - Google Patents

Description

Solid Waste Storage

The utility model relates to the field of public utilities, and more specifically to facilities for the disposal of municipal solid waste in natural soils.

From the prior art it is known storage for solid household waste, made in the form of a pit, on the side walls and the base of which a polymer multilayer waterproof screen and sand and gravel cushion are sequentially placed (application EPO No. 0436928-A11990).

A disadvantage of the known repository for municipal solid waste is the high cost of its construction, since the formation of a polymer multilayer waterproof screen along the side walls of the foundation pit and its base

IPC 7 in 09 in 1/00

(options).

is associated not only with a large consumption of polymeric materials, but also with significant labor costs.

In addition, since the thickness of the polymer multilayer screen is several millimeters, the likelihood of damage to it during the disposal of waste is quite high. Therefore, the known repository for municipal solid waste does not provide reliable protection against ingress of leachate into groundwater.

There is also known a repository for solid household waste, taken as a prototype and made in the form of a pit, on the side walls and the base of which are placed a sequentially single-layer waterproof screen and a sand and gravel cushion (see RU patent No. 2136402-С11999).

A disadvantage of the known solid waste storage facility is that it does not provide reliable protection against leachate getting into groundwater, since a sand-gravel cushion (protective layer) does not provide a high degree of reliability for protecting a single-layer waterproof screen from mechanical damage during

the implementation of the process of disposal of municipal solid waste.

The utility model is aimed at solving the technical problem of improving the reliability of groundwater protection from leachate from the solid waste storage, but without significantly increasing the cost of building the storage.

The task, according to the first embodiment of the utility model, is achieved by the fact that the storage for municipal solid waste is made in the form of a foundation pit with a waterproof screen and a protective layer located on top of it and, according to a useful model, an additional underlying layer is placed on the walls and base of the foundation pit, on top which is a waterproof screen, made in the form of two layers of polymer material, separated by a layer of coarse sand or fine gravel with a thickness of 0.35-0.45 m

In addition, the layers of polymer material are made in the form of a film of latex, or of a plastic film.

stabilized with soot, or from a film of low-pressure polyethylene.

The task, according to the second embodiment of the utility model, is achieved by the fact that the storage for municipal solid waste is made in the form of a foundation pit with a waterproof screen and a protective layer located on top of it and, according to a useful model, an underlying layer is additionally placed on the walls and base of the foundation pit, on top of which a waterproof screen is placed, made in the form of two layers of polymer material, separated by a layer of sandy soil with a thickness of 0.35-0.45 m

In addition, the layers of polymeric material are made either in the form of a film of latex, or of a plastic film stabilized by soot, or of a film of low pressure polyethylene.

The proposed implementation of the storage facility for municipal solid waste provides reliable protection of groundwater from the ingress of leachate from the storage facility, since the implementation of the waterproof screen is three-layer (two layers of a film of polymer material divided between

a layer of either coarse sand (fine gravel) or sandy soil with a thickness of 0.35 - 0.45 m) eliminates the possibility of mechanical damage to both layers of a film of polymer material in the course of waste disposal.

The presence of an additional underlying layer on the walls and basement of the pit allows one to avoid large initial mechanical stresses in the first film of polymer material

waterproof screen.

The implementation of the layer separating the layers of the film of polymeric material from coarse sand or fine gravel allows the use of an intermediate layer of a waterproof screen as a drainage layer.

In the future, the utility model is illustrated by drawings and a description of them.

In FIG. 1 schematically shows a cross section of a storage facility for municipal solid waste; in FIG. 2 - enlarged cross section

waterproof screen in accordance with the first embodiment of the utility model; in FIG. 3 is the same in accordance with a second embodiment of the utility model.

The storage for municipal solid waste is made in the form of a pit 1, on the side walls 2 and 3 of which, as well as on its base 4, an underlying layer 5, a three-layer waterproof screen 6 and a protective layer 7 are sequentially placed.

The underlying layer 5 is made of sandy soil with a thickness of 0.15-0.35 meters, and the protective layer 7 is made of sandy soil with a thickness of 0.45-0.6 meters with a particle size not exceeding 5 mm.

The three-layer waterproof screen 6 according to the first embodiment of the utility model (FIG. 2) contains the first 8 and second 9 layers made of a film of polymeric material, namely: latex, carbon black stabilized or low pressure polyethylene, and also layer 10 placed between them from coarse sand or fine gravel 0.35, 45 m thick.

The three-layer waterproof screen 6 according to the second embodiment of the utility model (Fig. 3) contains the first 8 and second 9 layers made of a film of polymeric material, namely latex, stabilized carbon black or low pressure polyethylene, and

layer 10 of sandy soil 0.35 h-0.45 m thick also placed by them.

First, excavation pit 1 is developed so that the excavation volume is equal to or greater than the volume of soil required for sanitary filling of the waste. Sandy soil is poured onto the bottom of the pit and an underlying layer 5 is formed with a thickness of 0.15-0.35 m along the base 4 and side walls 2 and 3. Then, the first layer 8 (8) of polymeric material, layer 10 (10) of coarse sand or fine-grained gravel (sandy soil), a second layer 9 (9) of polymeric material and a protective layer 7, for example, a sand-gravel cushion.

The proposed utility model can be used for storage and disposal of various municipal solid waste. The solid waste storage has a simple design and does not require scarce and expensive materials for its manufacture.

Claims (8)

1. Storage for solid household waste, made in the form of a pit with a waterproof screen and a protective layer located on top of it, characterized in that an additional underlying layer is placed on the walls and base of the pit, on top of which there is a waterproof screen made in the form of two layers of polymer material, separated by a layer of coarse sand or fine gravel 0.35-0.45 m thick.  2. Storage according to claim 1, characterized in that the layers of polymer material are made in the form of a film of latex.  3. The storage according to claim 1, characterized in that the layers of polymer material are made in the form of a plastic film stabilized with soot.  4. The storage according to claim 1, characterized in that the layers of polymer material are made in the form of a film of low pressure polyethylene.  5. Storage for solid household waste, made in the form of a pit with a waterproof screen and a protective layer located on top of it, characterized in that an additional underlying layer is placed on the walls and base of the pit, on top of which there is a waterproof screen made in the form of two layers of polymer material, separated by a layer of sandy soil 0.35-0.45 m thick.  6. The storage according to claim 5, characterized in that the layers of polymer material are made in the form of a film of latex.  7. The storehouse according to claim 5, characterized in that the layers of polymer material are made in the form of a plastic film stabilized with soot. 8. The storehouse according to claim 5, characterized in that the layers of polymer material are made in the form of a film of low pressure polyethylene.