水道港口2024，Vol.45Issue(4)：551-559,9.
固定化微生物技术及工艺处理海水养殖尾水的应用研究
Engineering application of immobilized microorganism technology and process in treatment of marine aquaculture tail water
摘要
Abstract
China's mariculture scale ranks first in the world,and the rapid development of aquaculture industry has also brought environmental pollution issues that cannot be ignored,resulting in excessive nitrogen and phosphorus discharges into offshore waters,declining water quality,and posing threats to the ecological environment.The discharge of marine aquaculture tail water is substantial and contains complex pollutants,making it difficult to treat.Aiming at the characteristics of high salinity and low carbon to oxygen ratio in the tail water of mariculture,an enhanced nitrogen removal process of"aerobic/anaerobic/anaerobic/aerobic"based on immobilized microorganism technology was developed in this paper.Through the implementation of a"filtration-biochemical-flocculation and flocculation precipitation"process,the tail water was treated in three stages to achieve deep removal of nitrogen,phosphorus,and other pollutants.The actual operation results show that the process starts quickly and consumes low energy.The maximum removal rates of inorganic nitrogen and active phosphate are 97.67%and 98.35%,respectively,reducing their mass concentrations of inorganic nitrogen and active phosphate in effluent to0.27 and0.033 mg/L,respectively.The water quality index meets the first-class standard of"Marine aquaculture Water discharge Requirements"(SCT/T9103-2007).The technology realizes the deep nitrogen and phosphorus removal by microbial method in high brine and can be used as a recommended process for tail water treatment in aquaculture industry.关键词
海水养殖尾水/固定化微生物/脱氮/除磷/絮凝沉淀Key words
mariculture tail water/immobilized microorganism/denitrification/phosphorus removal/flocculation precipitation分类
交通工程引用本文复制引用
李振东,常方,叶伟,李慧婷,仪马兰,王廷沣,赵英杰..固定化微生物技术及工艺处理海水养殖尾水的应用研究[J].水道港口,2024,45(4):551-559,9.基金项目
国家自然科学基金项目(52200128) （52200128）
天津市自然科学基金面上项目(23JCYBJC00140) （23JCYBJC00140）
中央级公益性科研院所科研创新基金项目(TKS20230304) （TKS20230304）
