(廣東工業(yè)大學(xué) 環(huán)境科學(xué)與工程學(xué)院，廣州 510006)
摘 要: 采用自制SBR系統(tǒng)研究不同基質(zhì)與苯胺黑藥的共代謝特性。結(jié)果表明：在不同基質(zhì)種類和比例條件下，SBR系統(tǒng)的好氧反應(yīng)時間為3 h，反應(yīng)過程均可基本完成；幾種不同共代謝基質(zhì)促進(jìn)苯胺黑藥降解效率從高到低的順序為蔗糖、乙酸鈉、葡萄糖、淀粉和維生素C；當(dāng)基質(zhì)與苯胺黑藥的質(zhì)量比為1:1時，苯胺黑藥的降解效率最高；以蔗糖為共代謝基質(zhì)的出水COD為70 mg/L，去除率達(dá)到87.3%，苯胺黑藥出水濃度為3.7 mg/L，降解率達(dá)到98%；以蔗糖與乙酸鈉作為混合基質(zhì)時，出水COD為84.70 mg/L，COD去除率為84.6%，苯胺黑藥濃度為13.55 mg/L，苯胺黑藥降解率為93.23%；對胺黑藥與蔗糖質(zhì)量比為1:1時的實驗數(shù)據(jù)進(jìn)行動力學(xué)分析，得到動力學(xué)參數(shù)米氏常數(shù)Km=(1.600 8±0.080) mg/L、vmax=(0.264±0.006) mg/(L·min)。
關(guān)鍵字: 苯胺黑藥；共代謝；SBR；動力學(xué)
（School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China）
Abstract:Self-made sequencing batch reactor (SBR) was used to study the co-metabolism characteristics of aniline aerofloat with different substrates. The results show that the aerobic reaction process can be completed in 3 h regardless of substrate sort and the ratio of aniline aerofloat to substrate; the order of promoting degradation from high to low is as follows: sucrose, sodium acetate, glucose, amylum and vitamin C. When the mass ratio of aniline aerofloat to substrate is 1:1, the degradation efficiency of the aniline aerofloat is the highest, the COD in the effluent is 70 mg/L. When co-metabolism substrate is sucrose, the removing rate of COD is 87.3%, the concentration of aniline aerofloat in the effluent is just 3.7 mg/L and the degradation rate reaches 98%. The COD and aniline aerofloat in the effluent is 84.7 mg/L and 13.55 mg/L respectively when sucrose and sodium acetate are mixed as the compound substrate, 84.6% of COD is removed, and 93.23% of aniline aerofloat is degraded. The modified Michaelis-Menten equation was used to analyze the data at mass ratio of aniline aerofloat to substrate being 1:1 from the sucrose experiment, and the kinetics parameters are obtained as Km (1.600 8±0.080) mg/L and vmax (0.264±0.006) mg/(L·min).
Key words: aniline aerofloat; co-metabolism; sequencing batch reactor; kinetics
