摘要
针对海水养殖废水产生量大、营养盐含量较低、盐度较高的特点,以砾石和沸石为填料,采用A/O生物接触氧化工艺对模拟海水养殖废水进行处理,重点研究了水力停留时间(HRT)和回流体积比(R)对处理效果的影响。结果表明,在HRT为12~48 h、R为50%~200%时,A/O生物接触氧化工艺的脱氮效果均呈现先上升后下降的趋势。HRT=24 h、R=100%是反应器运行的优化条件,在此条件下氨氮和无机氮的平均去除率分别达到92.9%和71.9%。系统对COD的去除则几乎不受HRT和R的影响,COD去除率始终保持在90%以上。A/O生物接触氧化工艺可以用于海水养殖废水的处理。
Aimed at the characteristics of marine aquaculture wastewater, like large quantity of production, low concentrations of nutrients and high salinity. A/O bio-contact oxidation technology was used to treat simulative marine aquaculture wastewater, and the effects of hydraulic retention time （HRT） and volume reflux ratio （R） on treatment efficiency were emphatically researched. The results indicated that removal efficiency of nitrogen increased in the first stage, and then decreased when HRT ranged from 12~48 h and R ranged from 50%~200%. Under the optimum operation condition of HRT was 24 h and R was 100%, the average removal efficiency of ammonia nitrogen and inorganic nitrogen reached 92.9% and 71.9% respectively. The removal of COD was hardly related to the two factors, and the removal efficiency of COD could reach 90% all the time. The results of water quality verified A/O- BCO could apply to marine aquaculture wastewater treatment,
作者
费翔
张晓一
周志明
何圣兵
周伟丽
黄荣振
FEI Xiang ZHANG Xiaoyi ZHOU Zhiming HE Shengbing ZHOU Weili HUANG Rongzhen(School of Encironmeutd Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China Marine Aquaculture Research Institute in Zhejiang Province, Wenzhou 325005, China)
出处
《水处理技术》
CAS
CSCD
北大核心
2017年第8期97-100,共4页
Technology of Water Treatment
基金
浙江省科技计划项目(2015F50059)
