Liquid effluent filtration sludge consisting of fly ash and metal slag for use in the construction of water-retaining dams

Abstract

The invention relates to a novel product. It relates to the reuse of liquid effluent filtration sludge, the sludge consisting of fly ash and metal slag, in the construction of water-retaining dams. This product is an innovative construction material derived from the recovery of industrial waste and having specific properties suitable for the field of civil engineering.

Description

[0001] Abridged

[0002] The invention relates to a new product: liquid effluent filtration sludge, composed of fly ash and metallic slag, reused in the construction of water dams. This product is an innovative construction material, derived from the valorization of industrial waste and possessing specific properties adapted to the field of civil engineering.

[0003] Title: Filtration sludge from liquid effluents, consisting of fly ash and metallic slag, used in the construction of water dams.

[0004] Technical field: The invention is in the field of civil engineering, more specifically in the construction of water dams, where it proposes a valorization of industrial waste (fly ash and metallic slag) for the realization of resilient and high-performance structures in terms of resistance and durability.

[0005] The management of industrial waste, such as fly ash from coal combustion and metallic slag from metal smelting, is a major environmental challenge. These materials are generally considered polluting waste, often difficult to recover effectively. Furthermore, in the field of civil engineering, the construction of water dams requires robust, erosion-resistant materials capable of withstanding heavy loads while remaining economically viable. However, the management of filtration waste from liquid effluent treatment also presents a problem, as this sludge must be properly recycled to prevent its accumulation and environmental impact.

[0006] The patent proposes an innovative solution by valorizing fly ash and metallic slag as filtration materials in liquid effluent treatment. These solid wastes are used as adsorbents to purify wastewater, producing a filtration sludge. This filtration sludge is then reused in the construction of water dams, providing a solution to the challenges associated with waste management. The filtration sludge is transformed into a construction material offering mechanical strength, stability, and erosion resistance, while also reducing dam construction costs. This approach allows for the valorization of industrial waste and addresses the specific needs of dam construction, while contributing to sustainability and environmental protection.

[0007] Functioning: The invention relates to the valorization of fly ash and metallic slag as adsorbents for the filtration of liquid effluents. These industrial wastes, after being used to purify wastewater, are transformed into filter sludge which is then reused in the construction of water dams. This reuse not only reduces the environmental impact of solid waste, but also strengthens the resistance of dams to harsh conditions, while reducing construction costs. Tests carried out on the mechanical properties of this material have shown significant compressive and tensile strength, and no leaching or dangerous concentration of radioactive elements has been observed.

[0008] In the field of civil engineering, wastewater filtration with porous adsorbents is commonly used, but the management of the filter sludge remains an environmental challenge. This invention presents an innovative solution by enabling the reuse of filter sludge composed of fly ash and metallic slag in the construction of water dams. These materials offer advantages such as erosion resistance, high weight promoting structural stability, high mechanical strength, and reduced construction costs. These properties are particularly useful in applications where

Claims

Water is present, as is the construction of dams. Furthermore, the use of these materials for dam construction improves drainage and allows the slag to be used as filters for phosphorus treatment. The invention clearly identifies the use of fly ash and metallic slag as filtration materials initially, followed by their reuse in the construction of water dams. This process shows promising results in terms of mechanical strength, without leaching and without risk related to the concentration of radioactive substances.

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