Sewage nitrogen and phosphorus removal biochemical treatment process based on zero-valent iron

• Main Authors: ZENG XIANGZHUAN, CHEN HAOPEI, CHEN JIN, CHEN XIAOQING, LUO YANG, FENG JIANLIANG
• Format: Patent
• Language: Chinese; English
• Published: 08.03.2024
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a sewage nitrogen and phosphorus removal biochemical treatment process based on zero-valent iron, and relates to the field of sewage nitrogen and phosphorus removal, and the sewage nitrogen and phosphorus removal biochemical treatment process comprises the following steps: S1, construction of treatment equipment; s2, adding zero-valent iron; s3, after the zero-valent iron powder enters the aerobic tank, a hyperboloid stirrer is started for stirring, and the zero-valent iron powder reacts; and S4, the sludge subjected to anaerobic, anoxic and aerobic biochemical reactions enters a secondary sedimentation tank for sludge-water separation. According to the sewage nitrogen and phosphorus removal biochemical treatment process based on zero-valent iron, high-concentration micron zero-valent iron is used as a reaction medium and a carrier, and directly participates in nitrogen and phosphorus removal reaction while serving as a microbial carrier, so that the sludge age is increased, the sludge