5种姜科植物对污水的净化作用研究

Study on the removal ability of five species of Zingiberaceae to sewage

选择红丰收、白姜花、墨尔本姜花、峨眉姜花和青城姜花等5种姜科植物为材料,分析其对污染水体中氮、磷和氨氮等营养物质的吸收效率,比较5种姜科植物对污水净化能力的强弱。结果表明,参试5种姜科植物均能在高浓度的污水环境下生存,且能吸收污水中大部分(97.36%～98.03%)的氨氮(NH4+-N),其中白姜花的生长生理状况优于其余4种姜科植物;白姜花和墨尔本姜花对水体中的氮、磷去除率较高,分别达到85.44%、87.08%以及80.31%、85.33%。本试验结果表明,5种供试姜科植物均能有效降低水体中的化学需氧量(COD),并有效提升溶氧量(DO)。

In order to study the sewage purification ability of five species of Zingiberaceae,including Hedychium coronarium,Alpinia. spp,Hedychium. sp,H. qingchengense,and H. flavescens. The dynamic changes of nitrogen（N）,phosphorus（P） and ammonia nitrogen（NH4＋-N） in water purification process were analyzed. The results showed that the 5 experimental plants could not only survive in the experimental sewage environment,but also absorbed 97.36%-98.03% ammonia nitrogen（NH4＋-N） in the sewage. The growth physiology of H. coronarium was better than that of other experimental plants. The removal rate of nitrogen（N） and phosphorus（P） in sewage of H. coronarium was 85.44% and 87.08%,respectively,Hedychium. sp. was 80.31% and 85.33% respectively.Therefore,they are better at removing nitrogen and phosphorus from sewage. The chemical oxygen demand（COD） in the sewage of the five experimental plants were reduced,and effectively improved the dissolved oxygen content（DO）.