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US 8,940,162 B2Granted
Method and apparatus for processing wastewater after de-sizing
AssigneeNew Century Membrane Technology Co., Ltd.
InventorChi-Chang Kuo
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Abstract
Disclosed is a method for processing wastewater after de-sizing. The method includes the step of executing a preliminary treatment on the wastewater to intercept slurry and to stabilize the quality of the wastewater, the step of reducing the pH of the wastewater to a range between 6.0 and 7.5, the step of providing a refractory degradation material 30 for hydrolyzing and hence liquidating starch slurry in the wastewater, the step of separating solids from liquid of the wastewater; and the step of recycling the liquid.
Claims4
An apparatus for processing wastewater after de-sizing including:
- a fast mixer for containing and mixing the wastewater with acid;
- a liquidation unit for receiving the wastewater from the fast mixer and for containing a degradation material for hydrolyzing and hence liquidating the wastewater;
- a first tank;
- a first pump for pumping the wastewater into the first tank from the liquidation unit;
- a separation unit including a liquid-collection tube rotationally inserted in the first tank, ultra filtration membranes provided on the liquid-collection tube in a watertight manner, and a motor operatively connected to the liquid-collection tube;
- a second tank;
- and
- a second pump for pumping liquid into the second tank from the liquid-collection tube.
5 more elements
Dependencies are inferred from the claim text.