Treatment apparatus using reactive oxygen and treatment method using reactive oxygen

A treatment method of treating an object to be treated using reactive oxygen, comprising:

• a step of preparing a reactive oxygen supply device and conveying means capable of conveying the object to be treated with reactive oxygen in at least a direction A, wherein
• the reactive oxygen supply device comprises a plasma actuator and an ozone decomposing device inside a housing having at least one opening portion,
• the plasma actuator comprises a first electrode, a dielectric material, and a second electrode which are stacked in this order,
• the first electrode is an exposed electrode provided on a first surface, which is one surface of the dielectric material,
• when a voltage is applied between the first electrode and the second electrode, the plasma actuator generates a dielectric barrier discharge from the first electrode to the second electrode and cause an induced flow containing ozone to be blown out from the first electrode in a first direction, which is one direction along the surface of the dielectric material,
• the ozone decomposing device generates reactive oxygen in the induced flow by decomposing the ozone contained in the induced flow and the induced flow becomes an induced flow containing reactive oxygen,
• the plasma actuator and the ozone decomposing device are arranged such that the induced flow containing the reactive oxygen flows out from the opening portion to the outside of the housing,
• the treatment method further comprises a step of causing the induced flow containing the reactive oxygen to flow out from the opening portion and supplying the induced flow containing the reactive oxygen to the object to be treated, which is moved in the direction A, and
• an outflow direction vector of the induced flow containing the reactive oxygen flowed out from the opening portion has a vector component x which is parallel to and oriented in the same direction as the direction A.