再生水脱氮工艺中碳源投加的优化研究
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摘要
对某再生水厂两级生物滤池脱氮工艺的甲醇投加量进行优化,在2年的实际监测数据基础上,采用线性分析拟合得到甲醇投加量与进/出水总氮质量浓度、水处理量、日均温度等因素的相关方程,为一线工人确定精准投加甲醇量提供了便捷的操作指导。实际运行1年后,出水指标全部合格,甲醇-总氮去除比达4.16。采用以上优化措施降低了脱氮过程中甲醇的投用量,节约了甲醇投用成本。
In this study, the methanol dosage in the denitrification(nitrogen removal) process in a water reclamation plant was optimized. The correlation equations between methanol addition and inflow, outflow nitrogen values, water amount, and daily average temperature were established through linear fitting analysis of the monitoring data for 2015—2016. The equation provided convenient guidance for operational workers to formulate precise dosages. After running for one year in 2017, the results showed that nitrogen concentrations in the outflow water all met the water quality requirements. The methanol-nitrogen removal ratio was 4.16, which was significantly lower than before optimization of the process.
In this study, the methanol dosage in the denitrification(nitrogen removal) process in a water reclamation plant was optimized. The correlation equations between methanol addition and inflow, outflow nitrogen values, water amount, and daily average temperature were established through linear fitting analysis of the monitoring data for 2015—2016. The equation provided convenient guidance for operational workers to formulate precise dosages. After running for one year in 2017, the results showed that nitrogen concentrations in the outflow water all met the water quality requirements. The methanol-nitrogen removal ratio was 4.16, which was significantly lower than before optimization of the process.
引文
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[7] WILLIS J L,Al-OMARI A,BASTIAN R,et al.A greenhouse gas source of surprising significance:anthropogenic CO2 emissions from use of methanol in sewage treatment[J].Water Science and Technology,2017,75(9):1997- 2012.
[8] 邵留,徐祖信,尹海龙.污染水体脱氮工艺中外加碳源的研究进展 [J].工业水处理,2007,27(12):10- 14.SHAO L,XU Z X,YIN H L.Advances in the polluted water denitrification by using additional carbon sources [J].Industrial Water Treatment,2007,27(12):10- 14.(in Chinese)
[9] KUBA T,VAN LOOSDRECHT M C M,HEIJINEN J J.Phosphorus and nitrogen removal with minimal COD requirement by integration of denitrifying dephosphatation and nitrification in a two-sludge system[J].Water Research,1996,30(7):1702- 1710.
[10] 吴光学,时运红,魏楠,等.外加常规碳源污水反硝化脱氮研究进展[J].给水排水,2014,40:168- 172.WU G X,SHI Y H,WEI N,et al.Progress in polluted water denitrification by adding carbon sources [J].Water and Wastewater Engineering,2014,40:168- 172.(in Chinese)
[2] SOARES M I M,ABELIOVICH A.Wheat straw as substrate for water denitrification[J].Water Research,1998,32(12):3790- 3794.
[3] BOLEY A,KORSHUN G,BOLEY S,et al.A new reactor for denitrification and micro-particle removal in recirculated aquaculture systems[J].Water Science & Technology,2017,75(5):1204- 1210.
[4] 周磊,施亮亮,韩锡荣,等.两级生物滤池处理高NO-3—N浓度化工废水的实验研究[J].节水灌溉,2014(6):37- 39.ZHOU L,SHI L L,HAN X R,et al.High concentration NO-3—N chemical engineering wastewater treatment by using two-stage biological aerated filter [J].Water Saving Irrigation,2014(6):37- 39.(in Chinese)
[5] TERADA A,ZHOU S,HOSOMI M.Presence and detection of anaerobic ammonium-oxidizing (anammox) bacteria and appraisal of anammox process for high-strength nitrogenous wastewater treatment:a review [J].Clean Technologies and Environmental Policy,2011,13(6):759- 781.
[6] BODíK I,BL?■áKOVá A,SEDLá■EK S,et al.Biodiesel waste as source of organic carbon for municipal WWTP denitrification[J].Bioresource Technology,2009,100(8):2452- 2456.
[7] WILLIS J L,Al-OMARI A,BASTIAN R,et al.A greenhouse gas source of surprising significance:anthropogenic CO2 emissions from use of methanol in sewage treatment[J].Water Science and Technology,2017,75(9):1997- 2012.
[8] 邵留,徐祖信,尹海龙.污染水体脱氮工艺中外加碳源的研究进展 [J].工业水处理,2007,27(12):10- 14.SHAO L,XU Z X,YIN H L.Advances in the polluted water denitrification by using additional carbon sources [J].Industrial Water Treatment,2007,27(12):10- 14.(in Chinese)
[9] KUBA T,VAN LOOSDRECHT M C M,HEIJINEN J J.Phosphorus and nitrogen removal with minimal COD requirement by integration of denitrifying dephosphatation and nitrification in a two-sludge system[J].Water Research,1996,30(7):1702- 1710.
[10] 吴光学,时运红,魏楠,等.外加常规碳源污水反硝化脱氮研究进展[J].给水排水,2014,40:168- 172.WU G X,SHI Y H,WEI N,et al.Progress in polluted water denitrification by adding carbon sources [J].Water and Wastewater Engineering,2014,40:168- 172.(in Chinese)