Membrane system for treating sanitary wastewater

C - Chemistry – Metallurgy – 02 – F

Patent

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Details

C02F 1/44 (2006.01) B01D 61/14 (2006.01) B01D 63/16 (2006.01) C02F 1/32 (2006.01) C02F 1/78 (2006.01)

Patent

CA 2266637

A system for treating sanitary wastewater using membrane filtration is disclosed. Designed principally for complete on-site sewage treatment and disposal, the system separates wastewater into permeate (22) and concentrate (23) components by membrane separation subsystem (32); then dries, disinfects, and deodorizes the concentrate (23) component by a variety of methods to render it reusable or more easily stored and disposed. The permeate (22) component is discharged or reused as is, or is further treated to render it disposable or reusable for particular applications. Alternatives for treating the concentrate (23) component include mixing with alkaline admixtures and composting with other cellulose-based wastes. Alternatives for treating the permeate (22) component include deodorization and biological stabilization by ultraviolet radiation and ozonation. The apparatus includes membrane separation subsystem (32), a liquid treatment subsystem (34), and a solids treatment subsystem (36).

L'invention concerne un système permettant de traiter les eaux usées sanitaires par filtration sur membrane. Conçu principalement pour l'épuration et l'évacuation complètes des eaux usées sur site, le système sépare les eaux usées en composants perméat (22) et concentrat (23) au moyen d'un sous-système de séparation (32) sur membrane; puis il sèche, désinfecte et désodorise le concentrat (23) par divers procédés afin de le rendre réutilisable ou plus facile à stocker et à évacuer. Il rejette ou réutilise tel quel le perméat (22), ou lui applique d'autres traitements de façon à l'évacuer ou à le réutiliser pour des applications particulières. Parmi les alternatives au traitement du concentrat (23), on trouve le mélange à des adjuvants alcalins et le compostage avec d'autres déchets à base de cellulose. Parmi les alternatives au traitement du perméat (22), on trouve la désodorisation et la stabilisation biologique par rayonnement UV et ozonisation. Le dispositif comprend un sous-système de séparation (32) sur membrane, un sous-système de traitement (34) des liquides et un sous-système de traitement (36) des solides.

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