文献类型：期刊文献

中文题名：用CO_2改性碱渣废水强化炼油废水的硝化效能

英文题名：Enhancement of oil refining wastewater nitrification efficiency by CO_2 modified alkaline wastewater

作者：何怡萱[1];施震东[1];李佳慧[1];陈秀荣[1];林逢凯[1];庄有军[1]

机构：[1]华东理工大学资源与环境工程学院,上海200237

年份：2016

卷号：36

期号：3

起止页码：307

中文期刊名：化工环保

外文期刊名：Environmental Protection of Chemical Industry

收录：CSTPCD;;北大核心:【北大核心2014】；CSCD:【CSCD_E2015_2016】；

语种：中文

中文关键词：碱渣废水;CO2;炼油废水;碱度;硝化效能

外文关键词：alkalinewastewater; CO2; refinerywastewater; alkalinity; nitrification efficiency

摘要：针对炼油废水缺乏碱度而硝化效能受限问题,以CO2曝气处理后的改性碱渣废水为碱度补充剂,按一定配比加入炼油废水好氧阶段以强化硝化效能.实验结果表明：经流量为1 L/min的CO2连续曝气处理5h后,碱渣废水pH可降至7.2 ～ 7.8,钙元素质量浓度可降低90.65％,并去除了部分汞、砷等有毒重金属;将该改性碱渣废水以1∶99的体积比加入炼油废水并进行生化处理,COD去除率可达90.2％;相较于未补充碱渣的炼油废水,出水ρ （NO3-N）提高25％～ 30％,硝化细菌菌群密度增加52％,污泥絮体形态结构未发生改变.
Aiming at the problem of limited nitrification efficiency of alkalinity-lacking refinery wastewater, the alkaline wastewater modified by CO2 aeration treatment was used as alkalinity supplement and added into the refinery wastewater at aerobic stage by a certain proportion to enhance the nitrification efficiency. The experimental results show that： After continuous CO2 aeration treatment with 1 L/min of flow for 5 h, pH of alkaline wastewater is decreased to 7.2-7.8, the mass concentration of calcium element is reduced by 90.65%, and some heavy metals such as mercury and arsenic are removed; When the modified alkaline wastewater is added into the refinery wastewater with 1 ： 99 of volume ratio for biochemical treatment, the COD removal rate can reach 90.2%; Comparing with the refinery wastewater without alkaline wastewater, the effluent p （NO3--N） is increased by 25%-30%, the density of nitrifying bacteria is increased by 52%, and the morphology and structure of sludge floc are not changed.