摘要
研究了以无烟煤和以颗粒活性炭为介质的复三维电极电化学 -生物膜反应器脱除饮用水中硝酸盐的工艺 ,该工艺将复三维电化学产氢与以氢气为电子供体的自养反硝化工艺结合起来 .实验表明 ,两种介质的反应器在不加任何有机基质时都能有效地脱除水中的硝酸盐 ,并且两种反应器的最大电流效率分别达到 2 0 4%和 185 % .在水力停留时间不小于 2 .1— 2 .5h时 ,反应器的脱硝率接近 10 0 % .在 34℃、槽压 4.97V时处理 2 1.4mg(NO-3 N) /L的进水 ,无烟煤介质反应器的反硝化负荷为 0 .2 47mg(NO-3 N) /(cm2 ·d) ,活性炭介质反应器的反硝化负荷为 0 .2 13mg(NO-3 N) /(cm2 ·d)
Nitrate removal from drinking water through autotrophic denitrification by two bipolar\|three\|dimension\|electrode\|biofilm reactors with anthracite or GAC as medium was studied.This technique combined autotrophic denitrification process with bipolar\|three\|dimension\|electrode hydrogen generating process.The nitrate can be removcd effectively by both reactors without adding any organic carbon.The electric current efficiency of the reactor using anthracite as medium is up to 204%,and that of GAC is up to 185%.As the HRT more than 2 1—2 5 hours,both reactors can get nearly 100% nitrate removal.When treating water of 21 4?mg(NO - 3\|N)/L at 34℃ and 4 97V,The denitrification rate of the reactor with anthracite is 0 247?mg(NO - 3 N)/cm 2 of electrade surface/day,and that of one with GAC is 0 213?mg(NO - 3 N)/cm 2 of electrode surface/day.
出处
《环境科学学报》
CAS
CSCD
北大核心
2001年第1期39-43,共5页
Acta Scientiae Circumstantiae
基金
国家自然科学基金(批准号:59978050)资助项目。
关键词
复三维电极-生物膜反应器
饮用水
氢气
自养反硝化
填充介质
bipolar-three-dimension-electrode-biofilm reactor
drinking water
hydrogen
autotrophic denitrification
packed media
作者简介
范彬(1969-),男,工学博士。
