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Physical and chemical assessment of the stabilization of residual household waste before landfilling at Alveol, a French MBT plant (Bellac, Haute Vienne)

An evaluation of the mechanical biological treatment (MBT), used at center Alveol (Bellac, France) was performed in terms of mass decrease, of biogas emission reduction and of biologically treated waste stability.

The MBT process, including as mechanical sorting of waste the shredding and magnetic separation of the iron, the aerobic biodegradation of organic fraction of waste in the windrow aerated by air depression (6 weeks), and the maturation on a platform in the open air for 12 weeks, is followed by landfilling in tight cells. To evaluate the efficiency of treatment, a waste characterization campaign was conducted at each step. Samples taken at four steps of MBT have been sorted by size (>100 mm, <100-20mm>, <20 mm) and category (12 types in which putrescibles, plastic, paper, cardboard, textiles, glass, inert materials etc ). The main measured parameters indicating the increase of waste stability were the followings: lost of putrescibles, decrease of organic matter of RI4 (respirometric index after 4 days), increase of fine particles <20mm. Moreover, in view of assessing the degradation of waste leaching tests were also used. In these tests the leachate was analysed in terms of COD, BOD₅, TOC and of Suva index.

Copyright:	© Wasteconsult International
Quelle:	Waste-to-Resource 2011 (Mai 2011)
Seiten:	13
Preis:	€ 0,00
Autor:	Thouraya Chantou G. Feuillade Denis Mausset Guy Matejka Jalal Bouzid
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