活性炭纤维生物膜帘修复污染源水

Restoration of polluted source water by activated carbon fiber bio-film curtain

采用动力辅助活性炭纤维生物膜帘,模拟研究受污染水源水的原位修复过程,探讨了在不同温度和初始氨氮浓度下生物膜帘对源水修复效果的影响。实验结果表明,中温有利于微生物对有机物和氨氮的降解,低温则有利于微生物除磷。在35℃时CODMn和NH3-N去除效果最好,去除率分别达到90%和94%,15℃时TP去除效果最好,去除率达到54%;在不同氨氮浓度(分别取1.27、1.68和2.54 mg/L)时,生物膜帘对CODMn去除效果都较好,去除率稳定在85%左右,对NH3-N和TP去除效果随初始氨氮浓度的升高而逐渐下降,氨氮去除率由96%下降到92%、TP去除率由40%下降到30%左右。

Activated carbon fiber bio-film curtain with dynamic auxiliary was used to simulate the polluted source water in situ restoration. The effects of different temperatures and initial ammonia nitrogen concentrations on the remediation were discussed. The results indicated that the middle temperature was advantageous to the microorganisms on the biodegradation of organic matter and ammonia nitrogen,and low temperature was more conducive to microbial phosphorus removal. At 35℃,the removal efficiencies of CODMnand NH3-N were the best,90% and 94%,respectively,whereas the highest removal rate of TP could reach 54% at 15℃. Under the different ammonia nitrogen concentrations( 1. 27,1. 68 and 2. 54 mg / L),the removal efficiency of CODMnwas good and stabilized at approximately 85%. With the increase of initial ammonia nitrogen concentrations,the removal efficiency of NH3-N and TP decreased gradually. The removal rate of NH3-N reduced from 96% to 92%,while the removal rate of TP reduced from 40% to 30%.