6 results about "Photocatalytic reaction" patented technology

The invention belongs to the field of domestic sewage treatment, and particularly relates to an ozone-assisted photocatalytic sterilization device, which comprises an ozone generation system, a first control valve, a gas flow meter, a filter, a liquid flow meter, a second control valve, a jet flow mixing device and a photocatalytic reactor, wherein the ozone generation system is connected with the gas flow meter through the first control valve; the filter is connected with the liquid flow meter through the second control valve; the jet flow mixing device is provided with a gas inlet, a liquid inlet and an outlet; the gas flow meter is connected with the gas inlet of the jet flow mixing device; the liquid flow meter is connected with the liquid inlet of the jet flow mixing device; the outlet of the jet flow mixing device is connected with the photocatalytic reactor. The device has the beneficial effects that a process flow is simple, the device is easy to operate, and has good sterilization and disinfection effects, and the treatment cost is effectively lowered.

The invention belongs to the technical field of photocatalytic oxidation, and discloses a method for regulating and controlling the activity of a catalyst by utilizing a continuous flow photocatalytic reaction device and application of the method. The method comprises the following steps: putting a diluent of a target pollutant into a liquid storage tank, and tightly connecting the liquid storage tank with a photocatalytic reactor through a silicone tube; according to the method, a single-channel peristaltic pump is used for controlling the water inlet flow rate to be 5-30 mL/min and the water outlet flow rate to be 1-15 mL/min respectively, it is guaranteed that the average water flow speed is 3-20 mL/min, the device operates in a continuous flow state, and a catalyst is continuously excited by ultraviolet light till target pollutants are completely oxidized. According to the method, the contact time of a target object and a catalyst is changed by adjusting the flow speed of a to-be-treated fluid at a water inlet and a water outlet under the condition that the target object is efficiently treated, so that the activity and the service life of the catalyst are regulated. The method can be used for research of related mechanisms such as catalyst deactivation and the like, and the fields of medical wastewater treatment, sewage treatment secondary effluent or deep purification of urban drinking water and the like.