In 2009, Lindane was included in the Stockholm Convention on Persistent Organic Pollutants (POPs) to achieve the global elimination of these substances. This international treaty mandates an irreversible destruction of POPs into non-POPs. Consequently, development of cost-effective, safe and environmentally technologies for the destruction of POPs is necessary. Although the Advanced Oxidation Processes (AOPs) are efficient in the treatment of this pollutants, many have the disadvantage of their high cost. A very useful alternative from the economic and environmental point of view is the use of solar energy integrated to these processes. This is Solar photo-Fenton Process (SPFPs). A detailed study associated with the photo-Fenton degradation of POPs (Lindane) present in real contaminated waters using a pilot plant Solar Reactor (SR) is proposed. This development includes an experimental work and rigorous mathematical modelling of photochemical reactors (laboratory and pilot plant scale), considering the fundamentals of chemical reactions (reaction mechanisms) and transport phenomena (mass and energy). The contaminated waters will be obtained at the Bailin landfill Sabiñánigo (Spain). The propose project addresses an environmental issue, highly relevant for current EU policies, included in UN Sustainable Development Goals, point 6 “Clean Water and Sanitation”.The innovative non-concentrate SR proposed aims to provide an economical/efficient alternative solution to this problem. This technology development would be used for many industries or communes that require an efficient treatment of their effluents. Based on the SR proposed, and considering the results obtained, the patent of these unit will be evaluated. The proposed realistic/highly ambitious work plan will be consistent with the extension of the call (24 mons.) The results obtained will be widely disseminated, not only in the scientific, but also in the academic and in the social.