Title: Influence of the thickness of the P-reactive drainage layer on phosphate content in green roof runoff

Authors: KARCZMARCZYK, A., KOCIK, A.

Keywords: green roof, phosphorus, Polonite, reactive material

Abstract: The green roof runoff may be contaminated with phosphorus. The source of P pollution can be a substrate layer. The research was carried out to determine an optimal ratio of P-reactive drainage layer (RM) to substrate layer (S) in a green roof construction. The main goal of conducted column experiment, was to examine P-removal efficiency of drainage layers in different thickness. The green roof material used in the experiment is a commercially available substrate for intensive roofs. It has been confirmed that the substrate can act as a source of phosphorus occurring in leachate from green roofs. It has been found that the P-reactive drainage layer of Polonite® in thickness of 2 and 5 cm reduces phosphate load in runoff. The load of phosphorus discharged from the columns amounted to 0.091; 0.032 and 0.02 mg P-PO4 for K1 (S:RM=10:1), K2 (S:RM=10:2) and K3 (S:RM=10:5). Layer of the substrate relative to reactive material layer of 10: 2 was considered as an optimal solution. In relation to the quality of water supplied an increase of pH and conductivity in runoff was observed. The P-reactive drainage layer and its thickness had no effect on these parameters. All the columns reduced water outflow by approximately 40% compared to the volume of simulated precipitation.

DOI: 10.22630/PNIKS.2017.26.4.43

APA style references: Karczmarczyk, A. & Kocik, A. (2017). Influence of the thickness of the P-reactive drainage layer on phosphate content in green roof runoff. Scientific Review Engineering and Environmental Sciences, 26 (4), 447-456. doi: 10.22630/PNIKS.2017.26.4.43

APA style citation in text: The first time citation in text: (Karczmarczyk & Kocik, 2017), next citation: (Karczmarczyk & Kocik, 2017)

Chicago style references: Karczmarczyk, Agnieszka, Agnieszka Kocik. "Influence of the thickness of the P-reactive drainage layer on phosphate content in green roof runoff." Scientific Review Engineering and Environmental Sciences, 78 ser., vol. 26, no 4, (2017): 447-456. doi: 10.22630/PNIKS.2017.26.4.43.

Chicago style citation in text: (Karczmarczyk, and Kocik 2017)

Bibtxt style references: @article{doi:10.22630/PNIKS.2017.26.4.43, author={Karczmarczyk, Agnieszka and Kocik, Agnieszka}, language={polish}, title={Influence of the thickness of the P-reactive drainage layer on phosphate content in green roof runoff}, journal={Scientific Review Engineering and Environmental Sciences}, URL={http://iks.pn.sggw.pl/PN78/A4/art4.pdf}, year={2017}, volume={26 (4)}, number={78}, pages={447-456}}

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