| 摘要 |
The domestic wastewater treatment unit comprises an inlet chamber (2) connected to an activation tank (4), which comprises a circulation pump for sucking the wastewater towards the chamber, a waste sludge pump, a system for measurement of water level and a system for aspiration of treated water towards a wastewater outlet (16). A wastewater inlet extending from the inlet chamber to the activation tank is directed towards a lower part of the activation tank. A transport system (12) aspirates the treated water from the activation tank towards the wastewater outlet. The domestic wastewater treatment unit comprises an inlet chamber (2) connected to an activation tank (4), which comprises a circulation pump for sucking the wastewater towards the chamber, a waste sludge pump, a system for measurement of water level and a system for aspiration of treated water towards a wastewater outlet (16). A wastewater inlet extending from the inlet chamber to the activation tank is directed towards a lower part of the activation tank. A transport system (12) aspirates the treated water from the activation tank towards the wastewater outlet, and is connected to a separate tank of a treated water pump (11), which is connected by its displacement pipe (20) to the tank including a filling pump. The wastewater inlet in the activation tank has an opening in a common wall of the inlet chamber and the activation tank, and is connected below the waste water level in the inlet chamber. The opening extends to a pipe located in the activation tank. An end of the pipe is located in the lower part of the aeration tank. The opening is formed in the lower part of the activation tank or is provided at a height of the maximum water level of the activation tank. The pump with excess sludge has an inlet located above a bottom of the activation tank at 15-50% of the depth of the activation tank. The activation tank comprises a first aerator, which is connected, via a first air inlet, to a blower through a distributor. The inlet chamber comprises a second aerator, which is connected, via a second air inlet, to the blower through the distributor. The first air inlet is directed towards the transportation system. The blower is connected to a control unit. The treated water pump, the filling pump, the circulating pump and the pump with excess sludge are electric pumps and airlift pumps.
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