预曝气+A/O处理高浓度焦化废水的工程实践  

Practice on treatment for highly-concentrated coking wastewater by pre-aeration+A/O process

作　　者：王凯 尹君贤 刘杰锋 王勇 王翼 Wang Kai;Yin Junxian;Liu Jiefeng;Wang Yong;Wang Yi(ACRE Coking&Refractory Engineering Consulting Corporation(Dalian),MCC,Dalian 116085,China;Inner Mongolia Mong-shui Wuhai Environmental Protection Inc.,Wuhai 016000,China)

机构地区：[1]中冶焦耐(大连)工程技术有限公司,大连116085 [2]内蒙古蒙水乌海环保科技有限公司,乌海016000

出　　处：《燃料与化工》2020年第6期50-52,55,共4页Fuel & Chemical Processes

摘　　要：针对焦化废水污染物浓度高、成分复杂的问题,在废水进入A/O系统前,采用预曝气对蒸氨废水进行预处理,极大地降低了污染物负荷,提高了系统抗冲击能力。该方法解决了焦化废水生化污泥易受冲击的问题,最终出水COD、NH 3-N、挥发酚分别降至90~110 mg/L、<2 mg/L、<0.15 mg/L,去除率分别高达98.5%、98%、99%。Due to the high concentration of pollutant and complicated composition in the coking waste water,pre-aeration process is applied before the A/O process to treat the highly-concentrated coking wastewater,which greatly lowers the organic pollutants and improves the buffering capacity so as to have a stable operation of the A/O system.The pilot run shows this system avoids the problem that the biochemical sludge is vulnerable to impact.As a result,the concentrations of COD,NH 3-N and volatile phenol in the treated wastewater are 90~110 mg/L,<2 mg/L,<0.15 mg/L and with removing efficiency 98.5%,98%and 99%,respectively.

关 键 词：焦化废水 预曝气 抗冲击能力 

分 类 号：X784[环境科学与工程—环境工程]