ABSTRACT
Polluted wastewater always poses a problem for society. But the search for wastewater treatment technologies that are a low-cost / cost-effective option may end with the use of solar photocatalytic treatment approach. The main advantage of photocatalytic treatment of wastewater is that it is a low-cost and efficient approach that can bring about photodegradation of organic pollutants. Solar photoreactors significantly differ from classic chemical reactors as their geometry is of critical importance ensuring that solar radiation is efficiently collected. The material used in the absorber tube must be able to transmit ultraviolet (UV) light as well as resist UV light degradation. Solar photoreactors can usually be divided into three different families: parabolic trough collectors, non-concentrating collectors, and compound parabolic collectors. In photocatalytic reactors, reflective surfaces play a significant role in achieving high optical quality and solar concentration. The non-concentrating collector or inclined plate collector is a flat or corrugated inclined plate over which fluid flows in a thin film.
