化工进展2017，Vol.36Issue(8)：3108-3115,8.DOI:10.16085/j.issn.1000-6613.2017-0139
焦化废水前置好氧流化床处理的必要性解析
Necessity analysis for employing preposition aerobic fluidized bed to treat coking wastewater
摘要
Abstract
Aiming to solve the problem that coking wastewater was not in proportion for carbon and nitrogen nutrients,abundant in poisonous components and difficult to be anaerobic treatment,self-developed novel biological fluidized bed with three phases was employed as high loading aerobic pretreatment method for the coking wastewater.The investigation mainly focused on the performance of the proposed aerobic reactor.Moreover,variation of critical organic components in aerobic biological process was analyzed by UV-Vis absorption spectrum and GC-MS methods.The main results could be listed as the following.When the influent average COD concentration is 4818.9mg/L,ambient temperature is between 28℃C to 33 ℃C,dissolved oxygen is in the range of 1.0mg/L to 1.5mg/L and MLSS is about 8.0g/L,then the organic loading of the reactor is in the range of 3.53 to 3.74kgCOD/(m3·d),and phenol,benzpyrole and phenylamine in wastewater can be efficiently degraded.Average removal ratio of COD,phenols and SCN-can be over 70％、99％ and 80％,respectively.By significantly reducing concentration of poisonous organics such as phenols,SCN-,CN-,and so on,the inhibition bottleneck for subsequent anaerobic hydrolysis and aerobic nitrification processes can be relieved.The reason the preposition aerobic fluidized bed can act as a necessary guarantee for high efficient biological treatment for coking wastewater can be attributed to enhanced mixing and mass transfer and high sludge concentration in the proposed reactor.Therefore,employing it as a pretreatment biological unit process for toxic and refractory organic wastewaters together with high ammonium concentration has some technical advantages,or other,prepositioned aerobic biological fluidized bed is indispensable to guarantee highly efficient treatment of these wastewaters.关键词
焦化/流化床/废水/生物抑制/降解Key words
coking/fluidized-bed/wastewater/biological inhibition/degradation分类
资源环境引用本文复制引用
张涛,韦朝海,任源,冯春华,吴海珍..焦化废水前置好氧流化床处理的必要性解析[J].化工进展,2017,36(8):3108-3115,8.基金项目
广东省应用型科技研发专项基金(2015B020235005)、国家自然科学基金(21037001,21406096)及江西省自然科学基金(20142BAB213022)项目. （2015B020235005）
