Patent ID: 11878920
Assignee: CHONGQING UNIVERSITY
Field: Environmental technology (Chemistry)
Classification: CPC C  E  Y | IPC C  E

Claim 5:
6. The stormwater bioretention system of claim 1, wherein the pyrite substrate layer comprises the mixture of 10 vol. % of the pyrite with a particle size of 1-3 mm, 5 vol. % of the oyster shell powder with a sheet length of 1-3 mm, 3 vol. % of 5-10 mesh quartz, 2 vol. % of 10-20 mesh of the first quartz sand, 35 vol. % of 20-30 mesh of the first quartz sand, 25 vol. % of 30-60 mesh of the first quartz sand, and 20 vol. % of 60-120 mesh of the first quartz sand.