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ES Geosintéticos Drenaje DRENAJE DE RELLENOS
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Drenaje de rellenos
El uso de los geocompuestos TENAX, siempre adaptables y acordes con las diversas normatividades, ofrecen importantes ventajas técnicas en términos de simplicidad de construcción, adquisición de materiales, estabilidad de taludes y control de erosión.
Las ventajas económicas son sustanciales cuando se compara las adquisiciones y los costos de instalación de un sistema de drenaje contra la gama de georedes y geocompuestos de TENAX.
Los geosintéticos de TENAX permiten grandes ahorros con el incremento de la capacidad disponible para depósitos de desperdicios debido a su poco espesor y al hecho de que permiten construir taludes mucho más inclinados que aquellos que se hacen con arena.
En promedio, usando geosintéticos en lugar de materiales tradicionales, se pueden obtener ahorros del 50%.
Los geocompuesto y las Georedes TENAX son muy usados en las siguientes aplicaciones:
Sellado del Relleno para (landfill capping):
Captación de agua superficial y sistema de evacuación (SWCR)
Ventilación de gas en rellenos (LFG)
En el fondo del relleno para:
Colección de lixiviados y sistemas de extracción (LCRS)
Sistema de detección de fugas (LDS)
Calcinato, BS (Italy)
Installation of Lining System
Each day, million tons of municipal and hazardous wastes are disposed of in landfills or other land disposal sites. A landfill is a large area of land or an excavated site that is specifically designed and built to receive wastes.
A typical modern landfill is lined with a layer of compacted clay and synthetic geomembrane to prevent the waste and leachate from leaking into the ground or ground water.
Geocomposite drains and aggregate material are used at the sides and bottom of the landfill to collect the leachate that flows through the decomposing waste.
The leachate is then collected sent to a leachate recovery facility to be treated.
Municipal Solid Waste System
Minimum liner system
Conventional design
Municipal Solid Waste System
Minimum liner system
Geosynthetics design solution
While landfills that accept municipal solid waste have typically a layer of clay and synthetic liners and a leachate system to prevent leakage, for
For example, a hazardous waste landfill must have two impermeable liners layers, one consisting of a geomembrane (Primary liner), and the other composed of both a geomembrane and a thick layer of compacted clay material (Composite Secondary liner).
In addition, a landfill accepting hazardous waste must have two leachate detection systems: the upper layer for Leachate Detection and Removal System (LCRS) and lower layer for Leak Detection and removal System (LDS).
Leaks of leachate from the primary waterproofing liner can occur fundamentally for two reasons: defects in seams of the geomembrane or damages to the liner during placement and compaction of waste materials.
Hazardous waste landfill
Minimum liner system
Conventional design
Hazardous waste landfill
Minimum liner system
Geosynthetics design solution
When a landfill reaches capacity, it is usually capped to ensure that rainfall will
The leaching of the rainwater through the landfill could cause contamination of the groundwater, and nearby surface waters. Thus covers are always required on completed landfills.
A composite cover, in which use has been made of soils and synthetic materials, can effectively eliminate infiltration but must be carefully designed to take care of considerations such as slope stability, long-term degradation and erosion.
In addition significant amounts of gas can be produced from decomposition of waste and an appropriate Landfill Gas Venting system (LFG) shall be designed. Methane extraction system wells are used to collect landfill gas.
The gas may be used to generate electricity on site, burned at flare locations on the landfill, or used in the sludge combustion process.
Once a landfill is capped (closed), the site shall be monitored for gas and leachate for a minimum of 30 years after the closing date. After a landfill is capped, the land may be used for recreation sites such as parks, golf courses.
Typical landfill cover system
Conventional design
Typical landfill cover system
Geosynthetics design solution