摘要
针对石化废水污染成分复杂、可生化性差的特点,研究了电气石对生物接触氧化法处理石化废水效能的影响.对处理前后的石化废水进行了GC-MS分析,并对反应器内的载体进行了扫描电镜（SEM）观察.在石化废水进水COD和NH4＋-N负荷率为0.64-0.72 kg/（m3.d）和0.058-0.072 kg/（m3.d）的条件下,负载电气石系统的启动速度提高,出水COD和NH4＋-N去除率分别增加8.7%和6.4%.进水中共检出100种有机物污染物,主要包含芳香烃、酸、酯、酚、醇和烷烃类等化合物.负载电气石的1号反应器对石化废水中有机污染物的去除效果优于未负载电气石的2号反应器,在1号和2号反应器的出水中,有机污染物种类分别是14种和28种.反应器内负载电气石的载体上有明显的菌胶团形成,细菌的生物量大.电气石能够提高生物接触氧化法处理石化废水的效能.
Aiming at the complexity and poor biochemical degradability of petrochemical wastewater, the effect of tourmaline on bio-contact oxidation method was investigated. The influent and effluent of petrochemical wastewater were analyzed by GC-MS, and the carrier was observed in reactor by scanning electron microscope （SEM）. As the loading rates of influent were COD 0.64-0.72 kg/（m3·d） and NH： -N 0.058-0.072 kg/（m3·d）, the start up of pilot system supported tourmaline were improved, and the removal rate of COD and NH4＋ -N of effluent was increased 8.7% and 6.4%, respectively. Organic pollutants of 100 kinds were detected in influent, mainly including aromatic hydrocarbon, acids, lipids, phenols, alcohols, and alkanes compounds. The removal efficiency of organic pollutant of reactor 1 with tourmaline was higher than reactor 2 without tourmaline. The number of organic pollutant in effluent from reactor 1 and 2 were 14 and 28, respectively. Zoogloea can be observed on carrier supported tourmaline, and the biomass of bacteria was predominant. The efficiency of biocontact oxidation method on petrochemical wastewater treatment can be enhanced by tourmaline.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2009年第6期1669-1673,共5页
Environmental Science
基金
国家水体污染控制与治理科技重大专项(2008ZX07208-005)
关键词
电气石
生物接触氧化法
石化废水
tourmaline
bio-contact oxidation method
petrochemical wastewater
