一种城市污水脱氮除磷的系统及方法

By setting up a waiting zone and adjusting the return point in the five-stage Bardenpho process, the return of nitrification liquor and sludge was optimized, solving the problem of poor nitrogen and phosphorus removal caused by insufficient carbon source. This achieved low-cost and high-efficiency nitrogen and phosphorus removal, and the effluent quality reached the Class A standard.

CN118929926BActive Publication Date: 2026-07-17MCC ECO ENVIRONMENTAL PROTECTION GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
MCC ECO ENVIRONMENTAL PROTECTION GRP CO LTD
Filing Date
2024-09-03
Publication Date
2026-07-17

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Abstract

本发明涉及污水生物处理技术领域，尤其涉及一种城市污水脱氮除磷的系统及方法。本发明的系统包括通过主管路依次连接的厌氧池、第一缺氧池、第一好氧池、静待池、第二缺氧池、第二好氧池及二沉池。通过在第一好氧区后设置静待区，将硝化液内回流点设置在静待区，进一步降低回流硝化液中的溶解氧浓度，从而降低溶氧量对外加碳源的消耗量，同时将二沉池中的污泥外回流至第二缺氧区再回流至厌氧区，进一步降低了污泥外回流液中的硝酸盐及亚硝酸盐浓度，抑制厌氧区反硝化作用对聚磷菌厌氧释磷的影响，从而达到高效脱氮除磷的目的，处理后的污水满足一级排放标准A标准。
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