UA56070A - Container from concrete and polymer materials designed for long-term storage of ecologically dangerous waste - Google Patents

Abstract

The proposed container from concrete and polymer materials designed for long-term storage of ecologically dangerous waste contains a concrete casing and a concrete cover. The inside surface of the container is coated with polyethylene material, and the outside surface layer is impregnated by water-resistant polymer-reinforced concrete. At the container wall, under the cover, a safety valve is installed in order to prevent high pressure inside of the container. There are no metallic parts at the outside surfaces of the container. For the possibility to handle the container, a horizontal rib is provided.

Description

The invention relates to the field of environmental protection, in particular to protect the population and nature from the harmful effects of chemical waste.

A well-known container for storing environmentally hazardous substances (patent Me 23401, Ukraine, published on 31.08.98 B.V. Mo4), which consists of a body and a lid, the joints of which are made of reinforced concrete, and in the joint gap between them there are connecting surfaces the body and lid are made inclined at an angle from 2 to 4", forming a conical gap, which is filled with concrete or other hardening material. This design does not ensure the tightness of the connection when internal pressure occurs, and also limits the scope of use of the container, for example, for storing waste with high acid and alkaline indicators, as well as made on the basis of organic solvents.

The disadvantage of this container is its insufficient resistance to the influence of atmospheric factors, since it is made of ordinary cement concrete.

The closest analogue in terms of technical essence and achievement of the effect is Ukrainian patent Me38131А dated 05/15/2001, Bull. Mo4 for 2001 "Concrete-polymer container for storage, transportation and disposal of ecologically harmful waste", which is accepted as a prototype. It consists of a body and cover made of reinforced cement concrete saturated with styrene (concrete polymer). The inner surface of the case is reinforced and protected by a continuous shell made of steel, to ensure the tightness of the container in unforeseen critical situations in the event of the formation of external cracks in the concrete polymer.

The disadvantage of this container is significant energy consumption when saturating concrete with styrene (energy consumption for concrete drying and polymerization).

In addition, the inner protective sheath of steel sheet must be made of chemically resistant material. The process of impregnating concrete with styrene and polymerization of the monomer is accompanied by harmful (toxic) gas emissions into the atmosphere, as a result of which it is necessary to apply personnel protection measures during the production process.

The basis of the invention is the task of simplifying the design and manufacturing technology of the container by eliminating the process of saturating concrete with styrene, and instead of chemically resistant sheet metal, use an elastic sheet polymer material, and to increase the durability of the outer surface of the container, use waterproof mineral-polymer compositions.

The task is solved in the following way. The body of the container and the lid are made of reinforced concrete, their inner surface during the forming process is lined with sheet polyethylene anchored in concrete. After processing, the body and lid are covered from the outside with an anti-filtration mineral-polymer composition. This composition penetrates into the pores of concrete and creates a hermetic protective screen up to 5 mm thick.

Such a solution allows you to significantly reduce labor and energy resources, increase the resistance of containers to aggressive environmentally safe waste. To ensure the durability of containers for their service life of more than 100 years.

For a fig! and 2 shows the general appearance of a reinforced concrete container with a capacity of 0.7 m3. It consists of a body 1 and a cover 2, which are connected to each other at the corners with four steel bolts, and the seam between them is sealed with polymer concrete. The inner surface of the case and the cover are lined with polyethylene sheet 4 mm thick, and the outer surface is saturated with an anti-corrosion strengthening polymer composition, which ensures high resistance of concrete to aggressive atmospheric factors.

Container loading is carried out remotely using mechanisms. For this, a special funnel is installed in the loading hole of the case, which protects the surface of the container from contamination by waste. After filling, the funnel is removed, the body 1 is closed with a cover 2 and fixed with bolts. The gap between the lid and the body is filled with polymer concrete 3. If gases are formed in the closed container during operation, they exit through the safety opening 5.

The container can be used for transportation, temporary or long-term storage of waste. When carrying out loading and unloading operations on the container, horizontal ribs are provided on the outer surface, which serve as grips for a special traverse.

The container is characterized by the following indicators:

weight 150 kg; consumption of concrete up to 0.bm3; consumption of steel up to 75 kg; consumption of sheet polyethylene up to 15 kg; consumption of polymer composition 1,Bl; consumption of polymer concrete 1bl.

Durability of the container over 100 years is ensured by high physical and mechanical parameters of concrete, polyethylene sheet and polymer composition, namely: concrete compressive strength - 35 MPa; waterproof, high acid and alkali resistance, resistance to organic solvents of polyethylene; resistance to the influence of atmospheric factors on the outer coating due to the saturation of the outer surface with a polymer composition. 2 1

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Claims (1)

A concrete-polymer container for long-term storage of environmentally harmful waste, which includes a reinforced concrete body as a glass and a reinforced concrete lid, which is distinguished by the fact that its inner surface is lined with an elastic sheet polymer material anchored in concrete, and the outer surface is lined with a copper-reducing waterproof mineral-polymer composition , and there are no metal parts on the outer surface of the container, and for slinging, horizontal ribs-hooks are provided.