种达标地表水Ⅳ类之改良氧化沟工艺

• Format: Patent
• Language: Chinese
• Published: 28.09.2018
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

本发明公开种达标地表水Ⅳ类之改良氧化沟工艺，包括以下步骤：预处理；预处理后的污水依次排入厌氧池、缺氧池、表面曝气氧化沟、末端缺氧区、端好氧区；二沉池固液分离；二沉池排出的上清液进入混凝反应池，混凝反应池出水进入反硝化滤池；消毒后排放。本发明在表面曝气氧化沟前端设置了厌氧池用于生物除磷，缺氧池用于回流表面曝气氧化沟末端含有的硝态氮混合液进行反硝化除氮；表面曝气氧化沟后端设置了缺氧区，并外加碳源，用于进步去除氧化沟出水中含有的硝态氮；缺氧区后设置了好氧区，用于消耗残留的多余有机物；充分利用原水碳源进行氧化沟工艺的前置反硝化脱氮，能够确保Ⅳ类水出水标准的稳定实现。 The invention discloses an improved oxidation ditch process for obtaining standard IV-class surface water. The process includes the following steps that pretreatment is carried out, pretreated wastewater is discharged into an anaerobic tank, an anoxic tank, a surface aeration oxidation ditch, a tail-end anoxic zone and an end aerobic zone in sequence; solid-liquid separation is carried out through a secondary sedimentation tank; supernatant liquid discharged out of the secondary sedimentation tank enters a coagulation reaction tank, and outlet water from the coagulation reaction tank enters a denitrification filter tank; the water is discharged after being disinfected. According to the process, the anaerobic tank is arranged at the