人工光源补光对沉水植物的脱色效果及酶活性的影响  

IMPACT OF ARTIFICIAL LIGHTS ON SUBMERGED PLANTS' DECOLORIZATION AND ENZYME ACTIVITY

作　　者：张显球[1,2,3] 袁珍凤 杜明霞[1] 张勇[1,2,3] 王国祥 

机构地区：[1]南京师范大学环境科学与工程系,南京210023 [2]江苏省物质循环与污染控制重点实验室,南京210023 [3]江苏省地理信息资源开发与利用协同创新中心,南京210023

出　　处：《环境工程》2015年第7期7-11,共5页Environmental Engineering

基　　金：江苏省环保科研课题(2012013);水利部公益行业科研专项基金(2012018);江苏省太湖水环境综合治理科研课题(TH2014206)

摘　　要：采用人工光源对沉水植物金鱼藻补光,研究该法处理酸性染料废水的脱色效果及金鱼藻的酶活性响应。金鱼藻对染料废水的脱色效果良好,人工光源的补光对金鱼藻的净化效果有促进作用。其中,红光对金鱼藻的脱色效果的提高要好于白光和蓝光。实验范围内光照强度和补光时间与金鱼藻的脱色效果呈现较弱的正相关。初步确定的技术参数为:红光源,功率6 W,补光3 h,停留时间5 d。在此条件下,金鱼藻可将废水的色度从40倍降至10倍左右,去除率达75.0%。人工光源补光可促使金鱼藻的超氧化物歧化酶、过氧化氢酶和过氧化物酶对环境胁迫的响应提前,且酶活性有所提高,有利于增强沉水植物的抗逆能力。In present study, artificial light was used for adding light to Ceratophyllum demersum, the decolorization of acid dye wastewater by the method and the enzymes response of the plants has been studied. The results showed that Ceratophyllum demersum had high color removal efficiency, and artificial lights added could advance its rate, of which the red light achieved more effect than the white and blue. Apart from that, light intensity and illumination time were positively correlated with the decolorization. The preliminary technological parameters were ： red light power 6 W, filling light 3 h/d and residence time five days. As this conditions, the chromaticity could be reduced from 40 times to 10 times and the removal rate would be reached to 75.0%. In addition, artificial light could promote and accelerate the superoxide dismutase, eatalase and peroxidase activity, which would enhance the resistance response of plants.

关 键 词：人工光源 沉水植物 酸性染料 酶活性 抗逆性 

分 类 号：X173[环境科学与工程—环境科学] X703