| 摘要 |
The invention relates to a system and method to remove nitrogen, particularly nitrate, from wastewater utilizing denitrifying bacteria, sulfur as an electron donor and mollusk shells as alkalinity agent. Embodiments of the invention include a denitrification system comprising a bioreactor unit, denitrifying media comprising layers of elemental sulfur and oyster shells 3:1 by volume, and can further include a pretreatment unit and additional septic-system and/or wastewater-system components. Embodiments of the method include multiple steps utilizing the system and additional process steps that achieve increased autotrophic denitrification.
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