低强度超声波强化混凝技术中试应用试验
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摘要
依托天津外环河500 m~3/d人工快渗污水处理工程,在混凝沉淀段开展了低强度超声波强化混凝除藻技术的中试应用试验。试验结果表明,采用频率为80 kHz且功率小于90 W的低强度超声波对混凝沉淀工艺除藻效果的提升作用显著,其中藻细胞去除率可提高18. 52%～20. 32%,浊度去除率可提高9. 27%～21. 60%;超声波发生器最佳功率为60 W,最佳放置位置为絮凝池前端。试验结论为低强度超声波强化混凝除藻技术的工程应用提供参考。
On the basis of the 500 m~3/d sewage treatment project of constructed rapid infiltration( CRI) of the Tianjin outer ring river,the experiment of low-intensity ultrasonic enhanced coagulant technology for removing algae was carried out in the coagulant sedimentation section. The experimental results show that the effect of removing algae of coagulation sedimentation is significantly increased under the 80 kHz frequency and less than 90 W power of low-intensity ultrasonic. The removal rate of algae cells can be increased by 18. 52% ～ 20. 32%,and turbidity removal rate can be increased by 9. 27% ～ 21. 60%. The optimal power of the ultrasonic generator is 60 W,and the optimal location is the front of flocculation pool. This experiment has provided a reference for the engineering application of the low-intensity ultrasonic enhanced coagulant technology for removing algae.
On the basis of the 500 m~3/d sewage treatment project of constructed rapid infiltration( CRI) of the Tianjin outer ring river,the experiment of low-intensity ultrasonic enhanced coagulant technology for removing algae was carried out in the coagulant sedimentation section. The experimental results show that the effect of removing algae of coagulation sedimentation is significantly increased under the 80 kHz frequency and less than 90 W power of low-intensity ultrasonic. The removal rate of algae cells can be increased by 18. 52% ～ 20. 32%,and turbidity removal rate can be increased by 9. 27% ～ 21. 60%. The optimal power of the ultrasonic generator is 60 W,and the optimal location is the front of flocculation pool. This experiment has provided a reference for the engineering application of the low-intensity ultrasonic enhanced coagulant technology for removing algae.
引文
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[9]朱宸,丁凯耘,丛海兵,等.水质安全的动态超声波强化混凝除藻水处理试验研究[J].环境科学学报,2015,35(8):2429-2434.
[10]邵路路,陆开宏,朱津永.低强度超声波抑制铜绿微囊藻生长的研究[J].生态科学,2012,31(4):413-417.
[11]丁暘.低频低功率超声除藻技术及其现场应用研究[D].上海:上海东华大学,2009.
[12]张璐,周利.超声波除藻技术的研究现状与展望[J].市政技术,2014,32(6):94-97.
[13]YU H,HUANG J J,HU H Y.Effects of a novel Allelochemical ethyl 2-methyl acetoacetate(EMA)on the ultrastructure and pigment composition of cyanobacterium microcystis aeruginosa[J].Bulletin of Environmental Contamination and Toxicology,2009,83(4):502-508.
[14]Churro C,Fernandes A S,Alverca E,et al.Effects of tryptamine on growth,ultrastructure,and oxidative stress of cyanobacteria and microalgae cultures[J].Hydrobiologia,2010,649(1):195-206.
[15]Daly R I,Ho L,Brookes J D,et al.Effect of chlorination on microcycis aeruginosa cell integrity and subsequent microcystin release and degradation[J].Environmental Science Technology,2007,41(12):4447-4453.
[2]张婧,翟洪艳,季民.混凝对藻源有机物的去除及其消毒副产物的控制[J].中国给水排水,2016,32(3):56-60.
[3]张翀,赵亮,张莹,等.藻类爆发危害及其控制技术研究进展[J].环境保护科学,2015,41(3):107-112.
[4]刘轲翟.多频次低频率低强度超声波除(控)藻技术[J].华东科技(科学版),2015(5):18-19.
[5]陈龙甫,姚娟娟,张智,等.超声波除藻的机制以及安全性研究进展[J].四川环境,2014,33(1):150-153.
[6]乔俊莲,董磊,董敏殷,等.高频超声波对微囊藻毒素释放及降解的特性研究[J].中国给水排水,2009,25(17):94-96.
[7]陈杰,王波,张光明,等.超声强化混凝去除蓝藻实验研究[J].环境工程学报,2007,1(3):66-69.
[8]李芸.低频低强度超声波控藻效果研究[D].辽宁阜新:辽宁工程技术大学,2011.
[9]朱宸,丁凯耘,丛海兵,等.水质安全的动态超声波强化混凝除藻水处理试验研究[J].环境科学学报,2015,35(8):2429-2434.
[10]邵路路,陆开宏,朱津永.低强度超声波抑制铜绿微囊藻生长的研究[J].生态科学,2012,31(4):413-417.
[11]丁暘.低频低功率超声除藻技术及其现场应用研究[D].上海:上海东华大学,2009.
[12]张璐,周利.超声波除藻技术的研究现状与展望[J].市政技术,2014,32(6):94-97.
[13]YU H,HUANG J J,HU H Y.Effects of a novel Allelochemical ethyl 2-methyl acetoacetate(EMA)on the ultrastructure and pigment composition of cyanobacterium microcystis aeruginosa[J].Bulletin of Environmental Contamination and Toxicology,2009,83(4):502-508.
[14]Churro C,Fernandes A S,Alverca E,et al.Effects of tryptamine on growth,ultrastructure,and oxidative stress of cyanobacteria and microalgae cultures[J].Hydrobiologia,2010,649(1):195-206.
[15]Daly R I,Ho L,Brookes J D,et al.Effect of chlorination on microcycis aeruginosa cell integrity and subsequent microcystin release and degradation[J].Environmental Science Technology,2007,41(12):4447-4453.
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