宽带电磁场除藻技术的试验研究

doi:10.11985/2020.01.016

摘要/Abstract

摘要：

基于磁场对细胞的影响,电磁场除藻法成为新兴的除藻技术。由于藻类种群的多样性,固定磁场只能解决单一藻类,为了去除多种群藻类,提高除藻效率,利用交变三角波频谱宽泛的特点提出了一种交变磁场除藻技术。交变磁场由交变的三角波通过电感来产生,设计了一套能够产生稳定的高频交变三角波的发生装置,搭建了试验平台,通过改变频率产生不同磁场对藻体进行试验。最后将试验前后的藻类进行比较,结果表明,在适当的频率范围内,频率越高,藻体的去除率越高。

关键词: 电磁场除藻, 三角波, 频谱

Abstract:

Based on the effect of magnetic fields on cells, the electromagnetic field algae removal method has become an emerging algae removal technology. Due to the diversity of algae populations, a fixed magnetic field can only solve a single alga. In order to remove multiple algae groups and improve algae removal efficiency, taking advantage of the wide spectrum of alternating triangular waves, a new technology of algae removal by alternating magnetic field is proposed. An alternating magnetic field is generated by an alternating triangular wave through an inductor, a set of generators capable of generating stable high-frequency alternating triangle waves is designed, and an experimental platform is set up. Experiments are performed on algae by changing the frequency to generate different magnetic fields. Finally, algae are compared before and after the experiment. The results show that within the frequency range, the higher the frequency, the higher the removal rate of algal bodies.

Key words: Electromagnetic field algae removal, triangular wave, spectrum

中图分类号:

TM154

代淑文,冯德仁. 宽带电磁场除藻技术的试验研究[J]. 电气工程学报, 2020, 15(1): 110-116.

DAI Shuwen,FENG Deren. Experimental Study of Algae Removal Technology with Broadband Electromagnetic Field[J]. Journal of Electrical Engineering, 2020, 15(1): 110-116.

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	时间/min	0	5	10	15
对比样	显微镜(放大倍数为80) 下图片
	藻细胞数目/ (×10⁷个/L)	0.928	1.150	1.410	1.760
	增长率(%)	0	23.9	51.9	89.7
20 kHz试验样	显微镜(放大倍数为80) 下图片
	藻细胞数目/ (×10⁷个/L)	1.540	1.020	0.864	0.608
	灭藻率(%)	0	33.7	43.9	60.5

	时间/min	0	5	10	15
对比样	藻细胞数目/ (×10⁷个/L)	0.928	1.150	1.410	1.760
对比样	灭藻率(%)	0	-23.9	-51.9	-89.7
20 kHz	藻细胞数目/ (×10⁷个/L)	1.540	1.020	0.864	0.608
20 kHz	灭藻率(%)	0	33.7	43.9	60.5
30 kHz	藻细胞数目/ (×10⁷个/L)	1.630	1.280	0.800	0.512
30 kHz	灭藻率(%)	0	21.6	51.0	68.6
40 kHz	藻细胞数目/ (×10⁷个/L)	1.630	1.120	0.672	0.448
40 kHz	灭藻率(%)	0	31.4	58.8	72.5
50 kHz	藻细胞数目/ (×10⁷个/L)	1.700	1.060	0.576	0.160
50 kHz	灭藻率(%)	0	37.7	66.0	90.6
60 kHz	藻细胞数目/ (×10⁷个/L)	1.180	1.180	0.544	0.352
60 kHz	灭藻率(%)	0	24.5	65.3	77.6