Mountain cheese factory wastewater treatment with the use of a hybrid constructed wetland |
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| Authors: | Elena CominoVincenzo Riggio Maurizio Rosso |
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| Institution: | a Politecnico di Torino, Dipartimento di Ingegneria del Territorio dell’Ambiente e delle Geotecnologie, C.so Duca degli Abruzzi, 24, 10129 Turin, Italy
b Politecnico di Torino, Dipartimento di Idraulica, Trasporti e Infrastrutture Civili, C.so Duca degli Abruzzi, 24, 10129 Turin, Italy |
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| Abstract: | This paper describes the activity period of an experimental hybrid wetland system placed in a cold climate region. The aim is to determine the efficiency of the system in reducing TSS, BOD5, COD and other pollutants. The constructed wetland consists of a fat-removal unit and a basin for the storage and the distribution of the wastewater which precedes three phytoremediation beds: the first two are parallel and they work as submerged vertical flow wetland with gravel medium for an area of 180 m2; the last is a submerged horizontal flow wetland with sand medium and an area of 360 m2. The CW was designed to process a total estimated BOD5 loading rate of about 24 g m−2 d−1, which was less than half of the average actual loading rate. The wastewater treatment did not meet the required Italian law outflow limits, most likely due to BOD5 overloading. |
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| Keywords: | Phytoremediation Constructed wetland Hybrid system Cheese factory wastewater Cold climate |
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