摘要
为了探究厌氧/缺氧/好氧(anaerobic/anoxic/aerobic,A^(2)/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A^(2)/O工艺试验装置连续性进水出水,系统出水硝酸盐氮(NO -3-N)去除率全程达到了95%。出水的磷酸盐(PO_(4)^(3-))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A^(2)/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,但除磷效果不显著,未达到SC/T 9101—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。
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 A^(2)/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 A^(2)/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.
作者
杨名帆
石婷宇
罗国芝
谭洪新
刘文畅
YANG Mingfan;SHI Tingyu;LUO Guozhi;TAN Hongxin;LIU Wenchang(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,China;Key Laboratory of Freshwater Aquatic Germplasm Resources,Ministry of Agriculture and Rural Affairs,Shanghai Ocean University,Shanghai,201306,China)
出处
《渔业现代化》
CSCD
2023年第1期9-18,共10页
Fishery Modernization
基金
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)”。
关键词
生物絮凝
A^(2)/O工艺
反硝化脱氮除磷技术
养殖尾水
biofloc
A^(2)/O process
denitrification
nitrogen and phosphorus removal technology
aquaculture tail water
