CONSTRUCTION OF A UNITY OF METHANATION IN PRAHECQ (79)

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Client : GAEC La Lougnolle
Location : Prahecq (79)
Project : construction of a unity of methanation
Mission : Architecture HQE® competition

Consultant : AR ARCHITECTES, INEVAL ENVIRONMENT, EIFFAGE
CONSTRUCTION
Area : plot 15 000m²
Cost : 2 600K€ HT
Date : Competition 2011

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The project proposes a dense setting-up, to optimize the shelf space of public road network and pipes by the creation of a loop of traffic.The platforms of storage in ears guarantee an ease of load. The network of water, group of sets vegetated are situated along the plan of the loop. The pond of thunderstorm is visible.

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HQE® targets :

Target 1 : harmonious relation between building and environment
· Easy exploitation: legibility of the program, the hierarchy of the built and non-built elements.
· Harmony of the volumes and heights: compactness and integration of the program in the existing constructions.

· Optimization of the public road network: one way loop nof traffic, cover in calcareous sand

Target 2 : waste management
• Management of the effluents of breeding: treatment of the liquid manure, the exploitation fertilizer, the silage of corn, waste of cereal and law mowings.
• Reduction of greenhouse gas emissions: storage of effluents.
• Disappearance of the olfactive nuisances: reduction of the consumption of artificial fertilizers for the fertilization of grounds.

 

Target 4 : energy management
• Network of heat: production of methane, supply of the network of heat (housing, middle school).
• renewable Electricity production in situ: Asset facing the increase of the energies cost.
•Absence of oxygen : Important economy of electrical energy with compared with the aerobic treatments.

 

Target 5 : water management
• Water treatment by set vegetated: rainwaters and streaming are collected using gravity towards one set, which follows the public road network and the buildings.
• Reduction of the waterproof surfaces: heavy public road networks in calcareous sand.