渔业现代化

渔业现代化 ›› 2023, Vol. 50 ›› Issue (1): 9-.

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厌氧/缺氧/好氧序批式反应器处理养殖尾水的脱氮除磷性能的研究

  1. （1上海海洋大学 上海水产养殖工程技术研究中心，上海 201306；
    2. 上海市水产动物良种创制与绿色养殖协同创新中心，上海，201306;
    3. 上海海洋大学水产科学国家级实验教学示范中心，上海 201306）
  • 出版日期:2023-02-20 发布日期:2023-03-13
  • 作者简介:杨名帆（1996—），男，硕士研究生；研究方向：水产养殖水环境调控及养殖用水重复利用。E-mail:1045800496@qq.com
  • 基金资助:
    上海水产养殖工程技术研究中心能力提升项目循环水养殖系统优化（19DZ2284300）

Study on the removal of nitrogen and phosphorus by A2/O-SBR process in treating aquaculture tail water

  1. （1  Shanghai Engineering Research Center of Aquaculture，Shanghai Ocean University，Shanghai 201306，China; Shanghai Collaborative Innovation Center for Cultivating Elite Breeds and Green-culture of Aquaculture Animals, Shanghai, 201306 ；
    2  Key Laboratory of Freshwater Aquatic Germplasm Resources，Ministry of Agriculture and Rural Affairs，Shanghai Ocean University，201306，Shanghai）

  • Online:2023-02-20 Published:2023-03-13

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摘要： 为了探究厌氧/缺氧/好氧（anaerobic/anoxic/aerobic，A2/O）工艺试验装置处理模拟养殖尾水的处理效果，本研究在反硝化聚磷菌富集阶段，经过聚磷菌的活化、反硝化聚磷菌的富集、保持系统稳定三个阶段的富集培养，系统除磷率达到80%。在利用反硝化除磷菌处理模拟养殖尾水期间，通过A2/O工艺实验装置连续性进水出水，系统出水硝酸盐氮（NO3--N）去除率全程达到了的95%。出水的磷酸盐（PO43-）去除率40%~50%，出水总氮（TN）去除率也稳定在88%，出水的总磷（TP）去除率在30%~50%。探究A2/O工艺试验装置处理高硝酸盐氮生物絮团尾水和循环水养殖尾水的处理效果时，通过额外添加乙酸钠充当碳源的方式，添加碳源维持碳氮比在3.4:1的组别脱氮效果显著，除磷效果不显著，未达到SC/T9101—2007《淡水池塘养殖水排放要求》一级排放标准，需要进一步处理。


关键词: 生物絮凝, A2/O工艺, 反硝化脱氮除磷技术, 养殖尾水

Abstract: The purpose of this experiment is to explore the effect of an anaerobic/anoxic/aerobic process test device on the treatment of simulated aquaculture tailwater. In the enrichment stage of denitrifying phosphorus accumulating bacteria, after three stages of an enrichment culture of activation of phosphorus accumulating bacteria, enrichment of denitrifying phosphorus accumulating bacteria, and keeping the system stable, the phosphorus removal rate of the system reaches 80%. During the treatment of simulated aquaculture tail water with denitrifying phosphorus removal bacteria, the A2/O process experimental device continuously influent and effluent, and the removal rate of nitrate nitrogen in the effluent of the system reached 95% in the whole process. The removal rate of phosphate in the effluent is 40%~50%, the removal rate of total nitrogen in the effluent is also stable at 88%, and the removal rate of total phosphorus in the effluent is 30%~50%. When exploring the treatment effect of the A2/O process test device on the treatment of high nitrate biological floc tail water and circulating aquaculture tail water, the carbon source was added to maintain the carbon-nitrogen ratio of 3.4:1 by adding sodium acetate as a carbon source. The denitrification effect of the group is remarkable, the phosphorus removal effect is not significant, and it does not meet the first-class discharge standard of SC/T9101-2007 "Freshwater Pond Aquaculture Water Discharge Requirements" and needs further treatment.


Key words: biofloc, A2/O process, denitrification, nitrogen and phosphorus removal technology, aquaculture tail water