A photoreactor assembly

A photoreactor assembly comprising a light generating system, a photoreactor, and a control system, wherein:

• the light generating system comprises a first light generating device, wherein the first light generating device is configured to generate first device light comprising one or more of ultraviolet light, visible light, and infrared light, wherein the first light generating device comprises one or more of a laser and a superluminescent diode;
• the photoreactor comprises a reactor chamber configured to host a fluid to be treated with the first device light, wherein the reactor chamber is configured in a light-receiving relationship with the first light generating device such that the first device light irradiates at least a part of the fluid;
• the first light generating device comprises or is constituted by a wavelength variable light generating device that is controllable at least with respect to the wavelength of the first device light and configured to generate the first device light such that it changes between at least two centroid wavelengths (λ1c,1, λ1c,2) having a wavelength difference of at least 10 nm with a selected changing frequency;
• and
• the control system is configured to obtain at least one of a signal generated by user input at a user interface, a signal generated by a sensor, or a signal generated by a timer, and control the first light generating device to generate the first device light responsive to the obtaining of the at least one of the signal generated by user input at the user interface, the signal generated by the sensor, or the signal generated by the timer.