Biological contactor for purifying water to produce drinking water and associated control method

Biological contactor for purifying water to produce drinking water and associated control method

A biological contactor (8) comprises a granular bed including a layer (17) based on activated carbon the material of which satisfies the following conditions: density between 0.18 and 0.32 g/cm3, carbon tetrachloride adsorbing power between 60% and 120% by weight, carbon tetrachloride retention less...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: BABLON, GUY P, MONTAGNON, JEAN R, VENTRESQUE, CLAIRE C, DAGOIS, GERARD L
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
METALLURGY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:A biological contactor (8) comprises a granular bed including a layer (17) based on activated carbon the material of which satisfies the following conditions: density between 0.18 and 0.32 g/cm3, carbon tetrachloride adsorbing power between 60% and 120% by weight, carbon tetrachloride retention less than 25% by weight of the carbon tetrachloride adsorbed mass, methylene blue: between 5 and 30 ml, particle size: between 0.5 and 1.5 mm effective size with a coefficient of uniformity less than 2. A washing cycle (21, 24) (air only; air plus water; water only) of the contactor is triggered (38) when a parameter (36, 37) representative of the population of algae in said layer reaches a predetermined set point threshold.