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    • 1. 发明公开
    • ENHANCED SEWAGE BIOLOGICAL NITROGEN AND PHOSPHORUS REMOVAL METHOD BASED ON POLYHYDROXYALKANOATES METABOLIC REGULATION
    • 对废水废水的改进方法,生物脱氮磷基在代谢调控聚羟基烷酸酯
    • EP3018105A4
    • 2017-02-22
    • EP13888563
    • 2013-12-12
    • UNIV TONGJIUNIV NANJING
    • CHEN YINGUANGZHENG XIONGREN HONGQIANGSU YINGLONGTANG SHIJING
    • C02F3/30C02F11/04C12P7/62
    • C12P7/625C02F3/308C02F11/02C02F11/04Y02W10/27
    • The invention belongs to the technical field of environmental protection, and relates to a method for enhanced biological removal of phosphorus and nitrogen from sewage on the basis of metabolic regulation of polyhydroxyalkanoate, comprising the following steps: leading particulate organic substances obtained by primary sedimentation of sewage and excess sludge discharged from a secondary sedimentation tank into a sludge thickening tank for condensation; placing the condensed organic wastes into a polyhydroxyalkanoate precursor production reactor to synthesize polyhydroxyalkanoate precursors through anaerobic fermentation; after removing nitrogen and phosphorus, pumping the liquid into a polyhydroxyalkanoate precursor reservoir; pumping the polyhydroxyalkanoate precursors into a polyhydroxyalkanoate production reactor to produce polyhydroxyalkanoate; pumping into a conventional bioreactor for removal of phosphorus and nitrogen from sewage to conduct a process for biological removal of phosphorus and nitrogen from sewage. The present invention raises the removal rate of nitrogen and phosphorus up to around 80% to 95%, and the treated effluent water attains to the requirement of the Grade 1A discharge standard for sewage treatment plants. The method has the advantages of easy-to-control processes, low greenhouse gas emissions and reduced sludge production, and low cost of technical renovation and the like.
    • 本发明属于环保的技术领域,以及涉及一种用于从污水羟基链烷酸酯,包括以下步骤的代谢调控的基础上增强生物除磷和氮的:通过污水的初级沉淀获得主导粒状有机物 和过量污泥从二沉池到用于冷凝一个淤渣增稠罐中排出; 将所述冷凝的有机废物成前体聚羟基脂肪酸酯生产反应器来合成聚羟基脂肪酸酯前体通过厌氧发酵; 去除氮和磷,泵送液体到聚羟基烷酸酯的前体储存后; 泵送所述聚羟基烷酸酯的前体为聚羟基烷酸酯的生产反应器以产生聚羟基烷酸酯; 泵入用于从污水除磷和氮的常规生物反应器中进行用于从污水生物除磷和氮的过程。 本发明提出了氮的去除率和磷高达约80%至95%,并且经处理的污水达到水用于污水处理厂的1A级排放标准的要求。 该方法具有易于控制工艺,低的温室气体排放,减少污泥产量,和技术改造的低成本等优点。