Essay Biological Treatment

6279 Words Apr 9th, 2013 26 Pages
treatmentChemosphere 50 (2003) 145–153 www.elsevier.com/locate/chemosphere

Biological treatment process of air loaded with an ammonia and hydrogen sulfide mixture
Luc Malhautier a,*, Catherine Gracian a, Jean-Claude Roux a, Jean-Louis Fanlo a, Pierre Le Cloirec b a Ecole des Mines d’Als, Laboratoire du Gnie de l’Environnement Industriel, 6, Avenue de Clavires, 30319 Ales Cedex, France e e e b Ecole des Mines de Nantes, Dpartement Systmes Energtiques et Environnement, La Chantrerie, 4, rue Alfred Kastler, e e e BP 30723, 44307 NANTES Cedex 3, France Received 12 June 2001; received in revised form 10 July 2002; accepted 10 July 2002

Abstract The physico-chemical characteristics of granulated sludge lead us to develop its use
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The oxidation of high amounts of hydrogen sulfide would involve some environmental stress on nitrifying bacterial growth and activity. Ó 2002 Elsevier Science Ltd. All rights reserved.
Keywords: Biofiltration; Ammonia; Hydrogen sulfide; Biological oxidation; Elimination efficiency

1. Introduction Ammonia and hydrogen sulfide are emitted into the atmosphere from industries (carcass processing plants, sewage treatment plants, composting works). These emissions, in addition to their own toxicity, constitute a source of olfactory nuisance. More and more, purification processes are based on the ability of some microorganisms to oxidize a variety of inorganic and organic

*

Corresponding author. Fax: +33-466-782701. E-mail address: luc.malhautier@ema.fr (L. Malhautier).

compounds into mineral end-products (Diks and Ottengraf, 1991). Biofiltration as a technique to control air pollution is used mainly for odour removal. In skin manufacture, biofiltration treatment of hydrogen sulfide reached an elimination efficiency of 97%, the contaminated air flow rate was 6000 m3 hÀ1 (Bijl, 1987). Similarly, the treatment of air (20 000 m3 hÀ1 ), coming from oil production manufacture and loaded with hydrogen sulfide, using a biofiltration unit (340 m3 ) gave an elimination efficiency of 89% (Knauf, 1995). Amirhor et al. (1995) studied the treatment, using a biofilter (500 m3 ), of air (40 000 m3 hÀ1 ), coming from a composting work, containing mainly ammonia and reduced

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