CHENShan-shan,WANGXiao-dong,ZHOUXiao-lin,et al.Determination of Active Biomass and Its Distribution in Enhanced Denitrification MBBR[J].China Water & Wastewater,2022,38(15):73-77.
强化脱氮MBBR中活性生物量的测定及其分布
- Title:
- Determination of Active Biomass and Its Distribution in Enhanced Denitrification MBBR
- 摘要:
- 设计开发了强化脱氮移动床生物膜反应器（MBBR）中试系统，采用耗氧呼吸速率法研究了各反应单元中的活性生物量分布情况，并分析了不同进水负荷对各单元中活性生物量的影响。研究发现，各反应单元生物膜中的异养活性生物量占比均在60%以上。缺氧单元每个填料上的异养活性生物量平均为0.56~0.86 mg/L（以COD计，下同），好氧单元的自养活性生物量占比可达到37.6%。此外，当SCOD负荷增加0.80~9.70 g/（m2·d）时，异养活性生物量可增加0.19~0.53 mg/L；当氨氮负荷增加0~1.15 g/（m2·d）时，自养活性生物量可增加0~0.11 mg/L。
- Abstract:
- A pilot?scale enhanced denitrification MBBR was developed. The distribution of the active biomass in each unit was investigated by oxygen uptake rate method, and the effects of different influent loads on the active biomass in each unit were analyzed. The proportion of heterotrophic active biomass in biofilm of each unit was more than 60%. The average heterotrophic active biomass of each filler in anoxic unit was between 0.56-0.86 mg/L, and the proportion of autotrophic active biomass in aerobic units accounted for 37.6%. When SCOD load increased by 0.80-9.70 g/(m2·d), heterotrophic active biomass increased by 0.19-0.53 mg/L. When ammonia nitrogen load increased by 0-1.15 g/(m2·d), autotrophic active biomass increased by 0-0.11 mg/L.
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