【摘要】 将上流式颗粒污泥床(USB)用于反硝化和生物膜法用于自养硝化处理蔗糖配水和小区生活污水,反硝化污泥床去除有机物和硝态氮具有节省需好氧去除有机物的能耗的优势,同时好氧生物膜法硝化效率高。试验结果表明,当工艺进水的有机负荷小于2kgCOD/m3·d时,出水COD均小于60mg/L,好氧单元进水有机负荷和氨氮负荷分别小于13kgCOD/m3·d和09kgNH3N/m3·d时,出水氨氮小于5mg/L;COD/NO-3N是影响反硝化的关键因素,处理蔗糖配水时,COD/NO-3N大于5时反硝化脱氮完全,而COD/NO-3N为10时,生活污水作为电子供体仍然脱氮不完全;有机物含量过高导致好氧单元硝化效果降低,HRT是影响好氧单元硝化效率的主要因素,HRT缩短为15h时,氨氮去除率降低了85%左右;同时处理蔗糖配水和生活污水的反硝化菌活性相当。更多还原

【Abstract】 The up flow sludge bed(USB) was applied for denitrification and bio film for nitrification to treat synthetic sugar wastewater and sewage,so USB can remove organics and nitrate saving energy consuming for aerobic organics removal and biofilm holds high nitrification rate.The test results are shown as follows.Under organics loading of less than 2 kg COD/m 3·d,effluent COD was below 60 mg/L.When organic loading and ammonium loading in aerobic unit were less than 1 3 kg COD/m 3·d and 2 kg NH 3 N/m 3·d,respectively,effluent ammonium was below 5 mg/L The ratio of COD/NO - 3 N is the key factor.Complete denitrification was obtained for sugar wastewater with COD/NO - 3 N of higher than 5,but not for sewage with COD/NO - 3 N of 10.Excess organics could decrease the nitrification in aerobic unit and HRT was the main factor affecting the nitrification.When HRT was shortened to 1 5 h,ammonia removal rate decreased to 85%.The denitrification micro organisms activity was comparative for the treatment of sugar wastewater and sewage.更多还原