淀粉作为碳源强化污水生物除磷的可行性及机理
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摘要
以合成废水为研究对象,通过比较淀粉作为碳源对厌氧-好氧和好氧-延长闲置工艺生物除磷效率,单位周期营养盐和内聚物变化以及关键酶活性探究了淀粉作为碳源强化生物除磷可行性。结果表明,淀粉可以作为碳源用于生物除磷,且A/O和好氧-延长闲置工艺中生物除磷效率分别为91.5%和96.5%。好氧-延长闲置工艺中富集更多的聚磷,A/O厌氧期合成内聚物聚羟基烷酸酯(PHA)的质量分数最大为22.3 mg/g,好氧-延长闲置工艺合成PHA的质量分数最大为6.8 mg/g。此外,好氧-延长闲置工艺中聚磷酸盐激酶(PPK)的活性高于A/O。
The feasibility of biological phosphorus removal with carbon source in anaerobic/oxoc(A/O) and oxic/entended idle process was researched by comparing biological phosphorus removal efficiency, unit cycle change of nutrients and intracellular polymer, and the key enzyme activities using synthetic wastewater as a research object. The results showed that starch could be used as carbon source for BPR, the efficiencies of BPR in A/O and oxic/extended idle process were 91.5% and 96.5%, respectively. More polyphosphate was enriched in oxic/extended idle process. In A/O regime, the maximum mass fraction of synthetic polyhydroxyalkanoate(PHA) was 22.3 mg/g, and 6.8 mg/g for the oxic/extended idle process. In addition, the activity of Polyphosphate kinase(PPK) in aerobic/extended idle processes was higher than that of A/O.
The feasibility of biological phosphorus removal with carbon source in anaerobic/oxoc(A/O) and oxic/entended idle process was researched by comparing biological phosphorus removal efficiency, unit cycle change of nutrients and intracellular polymer, and the key enzyme activities using synthetic wastewater as a research object. The results showed that starch could be used as carbon source for BPR, the efficiencies of BPR in A/O and oxic/extended idle process were 91.5% and 96.5%, respectively. More polyphosphate was enriched in oxic/extended idle process. In A/O regime, the maximum mass fraction of synthetic polyhydroxyalkanoate(PHA) was 22.3 mg/g, and 6.8 mg/g for the oxic/extended idle process. In addition, the activity of Polyphosphate kinase(PPK) in aerobic/extended idle processes was higher than that of A/O.
引文
[1]李硕,王然登,彭永臻.生物除磷颗粒污泥对Zn2+的去除特性研究[J].水处理技术,2017,43(2):22-28.
[2]ZHAO J,WANG D,LI X,et al.An efficient process for wastewater treatment to mitigate free nitrous acid generation and its inhibition on biological phosphorus removal[J].Scientific Reports,2015(5):8602.
[3]WANG D,LI X,YANG Q,et al.Biological phosphorus removal in sequencing batch reactor with single-stage oxic process[J].Bioresource Technology,2008,99(13):5466-5473.
[4]CHEN H,WANG D,LI X,et al.Biological phosphorus removal from real wastewater in a sequencing batch reactor operated as aerobic/extended-idle regime[J].Biochemical Engin eering Journal,2013,77:147-153.
[5]JIN Y,DING D,FENG C,et al.Performance of sequencing batch biofilm reactors with different control systems in treating synthetic municipal wastewater[J].Bioresource Technology,2012,104:12-18.
[6]PEREIRA H,LEMOS P C,REIS M A M,et al.Model for carbon metabolism in biological phosphorus removal processes based on in vivo13C-NMR labelling experiments[J].Water Research,1996,30(9):2128-2138.
[7]BOSSINK B A G,BROUWERS H J H.Construction waste:quantification and source evaluation[J].Journal of Construction Engineering and Management,1996,122(1):55-60.
[8]国家环境保护总局《水和废水监测分析方法》编委会.水和废水监测分析方法[M].4版.北京:中国环境科学出版社,2002.
[9]ZHAO J,WANG D,LI X,et al.Improved biological phosphorus removal induced by an oxic/extended-idle process using glycerol and acetate at equal fractions[J].RSC Advances,2016,6(89):86165-86173.
[10]赵建伟,李小明,杨麒,等.游离亚硝酸对好氧/延长闲置序批式反应器除磷性能的影响[J].环境科学学报,2014,34(7):1661-1667.
[11]郎龙麒,万俊锋,王杰,等.生物除磷技术在水处理中的应用和研究进展[J].水处理技术,2013,39(12):11-15.
[2]ZHAO J,WANG D,LI X,et al.An efficient process for wastewater treatment to mitigate free nitrous acid generation and its inhibition on biological phosphorus removal[J].Scientific Reports,2015(5):8602.
[3]WANG D,LI X,YANG Q,et al.Biological phosphorus removal in sequencing batch reactor with single-stage oxic process[J].Bioresource Technology,2008,99(13):5466-5473.
[4]CHEN H,WANG D,LI X,et al.Biological phosphorus removal from real wastewater in a sequencing batch reactor operated as aerobic/extended-idle regime[J].Biochemical Engin eering Journal,2013,77:147-153.
[5]JIN Y,DING D,FENG C,et al.Performance of sequencing batch biofilm reactors with different control systems in treating synthetic municipal wastewater[J].Bioresource Technology,2012,104:12-18.
[6]PEREIRA H,LEMOS P C,REIS M A M,et al.Model for carbon metabolism in biological phosphorus removal processes based on in vivo13C-NMR labelling experiments[J].Water Research,1996,30(9):2128-2138.
[7]BOSSINK B A G,BROUWERS H J H.Construction waste:quantification and source evaluation[J].Journal of Construction Engineering and Management,1996,122(1):55-60.
[8]国家环境保护总局《水和废水监测分析方法》编委会.水和废水监测分析方法[M].4版.北京:中国环境科学出版社,2002.
[9]ZHAO J,WANG D,LI X,et al.Improved biological phosphorus removal induced by an oxic/extended-idle process using glycerol and acetate at equal fractions[J].RSC Advances,2016,6(89):86165-86173.
[10]赵建伟,李小明,杨麒,等.游离亚硝酸对好氧/延长闲置序批式反应器除磷性能的影响[J].环境科学学报,2014,34(7):1661-1667.
[11]郎龙麒,万俊锋,王杰,等.生物除磷技术在水处理中的应用和研究进展[J].水处理技术,2013,39(12):11-15.