Multi-effect combined biological filter

• Main Authors: WANG WEIMIAN, WANG XIAOJIANG, LU XINGXING, LIU JIE, ZENG YONGHUI, DAI ZHIGUANG, LIU YANG, LIN WU, YU BOPING, CHEN HONGFANG, JIN XINGLIANG
• Format: Patent
• Language: Chinese; English
• Published: 11.06.2021
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention relates to the field of advanced wastewater treatment, and concretely relates to a multi-effect combined biological filter. The multi-effect combined biological filter comprises a slow-release carbon source denitrification tank, an aerobic tank, an adsorption filter tank and a water distribution diversion trench, a filler with large porosity and high adsorption capacity to ammonia nitrogen is laid in a main body section of the slow-release carbon source denitrification tank, a biological ceramsite filler for providing a carrier for microorganisms is laid in the aerobic tank, the adsorption filter tank is of a double-layer filler structure, the double-layer filler structure is divided into a lower filler layer filled with phosphorus removal ceramsite and an upper filler layer filled with biological activated carbon, the slow-release carbon source denitrification tank is provided with a slow-release carbon source unit in a water distribution diversion trench of a water inlet and distribution secti