C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
182/140, 362/49,
C02F 1/52 (2006.01) C02F 1/54 (2006.01)
Patent
CA 1257411
ABSTRACT OF THE DISCLOSURE A novel sewage purification system, a novel sewage purification method and a novel separator chamber all are provided herein. The sewage purification system includes a pump for drawing sewage into the system and an injection inlet for injecting a chemical into the effluent line from the pump. The pump leads to a pair of interconnected U-shaped mixing chambers connected to the effluent line from the pump, the U-shaped mixing chambers being baffled and being of a particular construction. There is also a recycle line from the inlet line to the mixing chambers back to the pump for recycling 1-20% of the total flow rate, which is 5-40 gallons/minute through the system. The U-shaped mixing chambers are also provided with at least two injection inlets for injecting chemicals thereinto. A splitter chamber is connected to the outlet from the mixing chambers to provide a pair of parallel flow outlets therefrom. A separator chamber is connected to said parallel flow outlets, the separator chamber having structure therein for providing tangential flow along the inside walls and also for separating sludge therefrom and withdrawing it from the bottom thereof, and for with- drawing clean water from the upper central core thereof. Finally, a sludge removal line is provided, along with a sludge recycle line for recycling 1-20% of the sludge back to the pump inlet line. The novel method comprises the steps of adding small amounts of at least the following, namely alum, a cationic polyelectrolyte and an anionic surface active agent thereto: turbulently mixing the added agents within the sewage or other impure water: allowing particulate matter to settle as sludge: and drawing off pure water.
446760
Continental Manufacturing And Sales Inc.
Gowling Lafleur Henderson Llp
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