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The photo-Fenton degradation of carbamazepine (CBZ) assisted with ultrasound radiation (US/UV/H 2 O 2 /Fe) was tested in a lab thin film reactor allowing high TOC removals (89% in 35 min). The synergism between the UV process and the sonolytic one was quantified as 55.2%. To test the applicability of this reactor for industrial purposes, the sono-photo-degradation of CBZ was also tested in a thin film pilot plant reactor and compared with a 28 L UV-C conventional pilot plant and with a solar Collector Parabolic Compound (CPC). At a pilot plant scale, a US/UV/H 2 O 2 /Fe process reaching 60% of mineralization would cost 2.1 and 3.8 €/m 3 for the conventional and thin film plant respectively. The use of ultrasound (US) produces an extra generation of hydroxyl radicals, thus increasing the mineralization rate. In the solar process, electric consumption accounts for a maximum of 33% of total costs. Thus, for a TOC removal of 80%, the cost of this treatment is about 1.36 €/m 3 . However, the efficiency of the solar installation decreases in cloudy days and cannot be used during night, so that a limited flow rate can be treated. [ABSTRACT FROM AUTHOR]

The mineralization of industrial wastewater from beverage industries during a solar photo-Fenton enhanced process mediated by ferrioxalate complexes was evaluated as an alternative to reduce the total treatment time required for conventional anaerobic digestion procedures in a compound parabolic collector (CPC) pilot plant. Under selected conditions (H 2 O 2 flowrate = 460 mL/h, H 2 C 2 O 4 flowrate = 2100 mL/h, [Fe] 0 = 150 mg/L, pH = 2.79, medium solar power = 35.8 Wh) and continuous operation, 70.6% and 96.6% of the total organic carbon (TOC) was removed from industrial effluent with an initial TOC concentration of 1386.8 mg/L after 55 and 125 min, respectively. In addition, this process completely removed the toxicity and COD and removed 99.8% of the BOD-5. First, the physico-chemical pre-treatment of raw wastewater was performed based on sedimentation to remove suspended solids and reduce the turbidity by 91%. The effects of the variables were studied during two different irradiation periods. Solar power is the main factor that influences mineralization during the first 60 Wh of accumulated energy due to the generation of hydroxyl radicals. However, solar power is unimportant at the end of the process (150 Wh of accumulated energy), when the molecular reaction mechanism between H 2 O 2 and the intermediates is predominant. The overall mineralization process ( k = 0.0096 min −1 ) occurs due to the contributions of the photo-Fenton process ( k = 0.0044 min −1 ) and the ferrioxalate photochemistry ( k = 0.003 min −1 ). The synergism between both processes was 22.9% based on the first order rate constants for TOC removal. [ABSTRACT FROM AUTHOR]