四氢呋喃废水的降解特性

对医药及化工生产中含四氢呋喃废水近年来的大量出现,研究了四氢呋喃废水的生物降解特性。结果表明:厌氧单基质条件下,四氢呋喃对厌氧消化产生轻微的抑制作用,浓度达到200mg/L时,厌氧微生物受到明显抑制,产气量急剧减少。厌氧共基质条件下,四氢呋喃浓度的增加反而有利于四氢呋喃的降解。四氢呋喃废水BOD5/COD为0.096,属好氧难降解污染物质,但其对好氧微生物无抑制,其原因在于四氢呋喃具有强的挥发性,曝气吹脱12h时COD去除率高达84%。

Biodegradability of Wastewater Containing Tetrahydrofuran

The results to study tetrahydrofuran (THF) biodegradability show that anaerobic digestion could be inhibited a bit by addition of THF under the condition of single substrate. Anaerobic microbe was inhibited noticeably and gas generation reduced abruptly when THF concentration reached 200 mg/L, and increase of THF concentration had a helpful effect on generation of methane gas and biodegradability of THF under the anaerobic condition of co-substrate. Although BOD_(5)/COD in THF wastewater was 0.096, which was aerobic refractory organic pollutant, it hasn't inhibited microbe in aerobic sludge system because of its high volatility. The removal efficiency of COD_(cr) was up to 84% after an aeration of 12 hours.