3种典型大型海藻对富营养化水体氮磷净化效果的分析  

Analysis on Purification Effect of The Three Typical Seaweeds on N and P in Eutrophic Water

作　　者：郑辉[1] 

机构地区：[1]河北农业大学海洋学院,河北秦皇岛066003

出　　处：《科技通报》2016年第3期222-225,共4页Bulletin of Science and Technology

基　　金：秦皇岛市科技计划项目(201401A209)

摘　　要：目的:分析3种典型大型海藻对富营养化海水水体中氮、磷的净化效果。方法:将孔石莼(Ulva pertusavar)、龙须菜(Gracilaria lemaneiformis)和海带(Laminaria japonica aresch)3种常见大型海藻为研究对象,通过富含氮磷海水静水培养6周,探讨3种典型大型海藻对海水水体中氮、磷的净化效果。结果:3种大型海藻NH4+-N的净化率均超过97.00%;对NO3--N的净化率在90.00%左右;龙须菜对PO43--P的净化率最高,为88.34%。海带组NH4+-N初期呈缓慢下降趋势,随后缓慢上升后又呈下降的趋势,而孔石莼和龙须菜组中的NH4+-N呈持续下降的趋势;3种大型海藻NO3--N浓度均呈先升高后下降的规律,而在下降的过程中又呈先快后慢的趋势;海带组PO43--P实验开始阶段呈上升趋势随后持续下降,孔石莼和龙须菜组中的PO43--P均呈快速下降的趋势直到实验后期逐渐呈稳定的状态。结论:3种常见大型海藻孔石莼、龙须菜和海带对水体当中的氮、磷营养盐具有较强的净化去除能力,其中龙须菜的净化能力最强。Objective:The research aimed to analyze purification effects of the three typical seaweeds on N and P. Method:To investigate the purification effects of N and P by seaweeds, three species of algae, including Gracilaria lemaneiformis, Ulva pertusavar and Laminaria japonica aresch, were cultured in seawater for 6 weeks.Result:purification rates of the three typical seaweeds for NH4+-N were all in excess of 97.00%, while purification rates for NO3--N were about 90.00%.The purification rates of Gracilaria lemaneiformis for PO43--P was 88.34%. NH4+-N of Laminaria japonica aresch early decreased slowly, then slowly rising and declining trend, while NH4 +-N content of Ulva pertusavar and Gracilaria lemaneiformis decreased continuously. NO3--N of the three typical seaweeds all presented change rules of increasing firstly declining then, and the declining trend was described as“fast,then slow”. PO43--P of Laminaria japonica aresch increased firstly and then decreased continuously, while PO43--P of Gracilaria lemaneiformis and Ulva pertusavar presented stable trend in the gradual declining process.Conclusion:The results show that the three typical seaweeds have typically absorbtion of N and P, while the Gracilaria lemaneiformis is the best.

关 键 词：大型海藻 龙须菜 孔石莼 海带 氮 磷 

分 类 号：X52[环境科学与工程—环境工程]