Patent ID: 9422180
Filing Date: 2016-08-23
CPC Classification: C02F

Claim Text:
1. A method for treating wastewater, the wastewater comprising non-degradable organics, the method comprising the following steps: (1) introducing the wastewater into a regulating reservoir and adding an acid into the regulating reservoir until the pH value of the wastewater ranges from 5.5 to 6.5; (2) introducing the wastewater treated in the step (1) into an electrode treatment device for electrolysis treatment, an electric current density therein ranging from 30 A/m (3) introducing the wastewater treated in the step (2) into a coagulation reaction tank, adding an alkali into the coagulation reaction tank until the pH value of the wastewater ranges from 8 to 10, and adding polysilicate ferric magnesium into the wastewater for a hybrid reaction for 5-15 mins; allowing the wastewater to flow into a sedimentation basin for plain sedimentation for 4-6 hours; and extracting a supernatant from the wastewater.