Biological treatment process and stationary-bed reactor for its use

• Main Author: CLAUDE BERNARD, FRANCOIS COLIN, JEAN-FRANCOIS LE GUILLOU ET ALAIN VAUTRIN
• Format: Patent
• Language: English; French
• Published: 06.07.1984
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Process for biological treatment of a liquid phase in which the liquid phase to be treated passes, flowing upwards, through a stationary immersed bed consisting of a material with open porosity of density lower than that of the liquid phase to be treated, the latter being brought into contact, as it passes through the stationary bed, with a biomass confined in the interstitial space of the bed. The reactor enabling the process to be carried out, equipped in its lower part with a pipe 6 for delivering the liquid phase to be treated and in its upper part with a pipe 12 for discharging the treated liquid phase, contains a stationary bed 2 of material with open porosity of density lower than that of the liquid phase to be treated and kept immersed by a physical retaining means 3. PROCEDE DE TRAITEMENT BIOLOGIQUE D'UNE PHASE LIQUIDE DANS LEQUEL LA PHASE LIQUIDE A TRAITER TRAVERSE, EN UN ECOULEMENT ASCENDANT, UN LIT IMMERGE FIXE CONSTITUE PAR UN MATERIAU A POROSITE OUVERTE DE MASSE VOLUMIQUE INFERIEURE A CELLE DE LA PHASE LIQUIDE A TRAITER, CELLE-CI ETANT MISE EN CONTACT AU COURS DE LA TRAVERSEE DU LIT FIXE AVEC UNE BIOMASSE CONFIRMEE DANS L'ESPACE INTERSTITIEL DU LIT.LE REACTEUR PERMETTANT LA MISE EN OEUVRE DU PROCEDE, MUNI A SA PARTIE INFERIEURE D'UNE TUBULURE 6 D'AMENEE DE LA PHASE LIQUIDE A TRAITER ET A SA PARTIE SUPERIEURE D'UNE TUBULURE 12 D'EVACUATION DE LA PHASE LIQUIDE TRAITEE, CONTIENT UN LIT 2 FIXE DE MATERIAU A POROSITE OUVERTE DE MASSE VOLUMIQUE INFERIEURE A CELLE DE LA PHASE LIQUIDE A TRAITER MAINTENU IMMERGE PAR UN MOYEN PHYSIQUE DE RETENTION 3.