Apparatus and process for distributed treatment of wastewater

Details Apparatus and process for distributed treatment of wastewater Apparatus and process for distributed treatment of wastewater

C - Chemistry, Metallurgy

02

F

C02F 3/12 (2006.01) C02F 3/00 (2006.01) C02F 3/20 (2006.01) C02F 9/00 (2006.01) G06F 9/445 (2006.01)

Patent

CA 2206744

A wasterwater treatment plant for individual residences. Wastewater is received in a settling tank (19) and then flows to an intermediate tank (24) where the sewage is aerated. When the wastewater in the intermediate tank reaches a predetermined level, a batch is transferred to an aerator/clarifier tank (56) where further aeration occurs. Sludge is allowed to settle, and supernatent is withdrawn to a drain field (92), while the sludge is returned to the intermediate tank or is wasted. The plant is automated under microprocessor control and can report to and exchange information with a central location.

L'invention concerne une installation de traitement des eaux d'égout destinée à des résidences individuelles. Les eaux d'égout sont réceptionnées dans un bac de décantation (19), puis s'écoulent vers un bac intermédiaire (24) où elles sont ventilées. Lorsque les eaux d'égout du bac intermédiaire atteignent un niveau prédéterminé, une quantité est transférée vers un bac aérateur/épurateur (56) dans lequel s'effectue ensuite la ventilation. La boue peut s'y décanter et un surnageant est évacué vers une zone d'écoulement (92) alors que la boue est renvoyée vers le bac intermédiaire ou est rejetée. L'installation est automatisée sous la commande d'un microprocesseur et peut envoyer et échanger des informations avec un point d'implantation central.

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