本文選題：焦化 + 流化床�。� 參考：《化工進展》2017年08期

【摘要】：針對碳氮比不協(xié)調(diào)、毒性組分多且厭氧困難的焦化廢水,采用自行研制的新型生物三相流化床對其實施前置高負(fù)荷好氧處理,重點考察了反應(yīng)器的好氧處理性能,并結(jié)合紫外-可見吸收光譜(UV-Vis)和GC-MS分析研究了好氧處理過程中主要有機成分的變化規(guī)律。結(jié)果表明,在進水COD平均濃度為4818.9mg/L、環(huán)境溫度為28~33℃、溶解氧為1.0~1.5mg/L及污泥濃度為8.0g/L左右的條件下,當(dāng)有機負(fù)荷處于3.53~3.74kg COD/(m3·d)范圍內(nèi)時,新型生物流化床可實現(xiàn)廢水中的苯酚、吲哚及苯胺等化合物的降解,其COD、酚及SCN 的平均去除率分別達到70%、99%和80%以上,通過大幅度削減酚類化合物、SCN 和CN 等毒性物質(zhì)的濃度而解除后續(xù)厭氧水解和好氧硝化過程的抑制瓶頸。因此,好氧生物流化床由于具有良好的混合傳質(zhì)性能和較高的污泥濃度,將其作為前置生物單元工藝處理含高濃度氨氮有毒難降解有機廢水具有技術(shù)優(yōu)勢,是實現(xiàn)該類廢水高效生物處理的必要保障。
[Abstract]:A new biological three-phase fluidized bed was developed to treat coking wastewater with uncoordinated carbon / nitrogen ratio, many toxic components and difficulty in anaerobic treatment. The aerobic treatment performance of the reactor was investigated with emphasis on the aerobic treatment performance of the reactor. The changes of main organic components during aerobic treatment were studied by UV-Vis-Vis and GC-MS. The results showed that when the average concentration of influent COD was 4818.9 mg / L, ambient temperature was 2833 鈩，

本文編號：1948730