公开(公告)号：US20240279097A1

公开(公告)日：2024-08-22

申请号：US18435022

申请日：2024-02-07

Applicant: SOUTHERN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Junguo LIU ,  Tao HUANG

IPC: C02F3/30 ,  C02F3/34

CPC classification number: C02F3/306 ,  C02F3/341 ,  C02F2209/02 ,  C02F2209/16 ,  C02F2209/22 ,  C02F2209/44

Abstract: A system for treating nitrate nitrogen sewage by autotrophic denitrification subsurface flow constructed wetland and a method thereof. The system includes a wetland pool body, a wetland substrate, a water distribution device, a water outlet device, and plants. The wetland substrate is filled in the wetland pool body. The wetland substrate includes pyrite, volcanic rock, and biochar. The water distribution device is located at the top of the wetland pool body to distribute water into the wetland pool body, and the water outlet device is located at the bottom of the wetland pool body to collect treated sewage. The plant is planted in the wetland substrate. The dissolved oxygen concentration of the system for treating nitrate nitrogen sewage by autotrophic denitrification subsurface flow constructed wetland is maintained at 1.2˜2.8 mg/L.