摘要
臭氧消毒后生成的氧化物如果过量将影响养殖生物和饵料微藻的生长,为此采用经臭氧处理的海水培养小球藻(Chlorella spp.),分析臭氧处理海水生成氧化物对小球藻生长的影响以及臭氧处理海水后氨氮(NH4+-N)和亚硝酸盐氮(NO2--N)含量变化。试验结果表明,在温度(25±1)℃,光照度10 000 lx左右,光照时数∶黑暗时数为14 h∶10 h,pH8.0±0.1,盐度30.0±0.1的条件下,臭氧生成氧化物质量浓度<0.735mg/L时,对小球藻不产生毒害作用;在臭氧生成氧化物质量浓度>1.036 mg/L时,有明显的毒害作用(小球藻大量死亡);质量浓度为2.364 mg/L时,小球藻全部死亡。经臭氧处理的海水,其氨氮和亚硝酸盐氮的质量浓度降低,其中氨氮最大降低82.6%。
The effect of Ozone produced oxidants in seawater to the growth of chlorella spp. and water quality was studied. Meanwhile, NH4^＋ -N and NO2^--N concentration in seawater by treated ozone were analyzed. The results showed that the density of OPO under the level of 0. 735 mg/L was harmless to the growth of chlorella spp. , while it was obviously harmful above 1. 036 mg/L and lots of chlorella spp. had perished. NH4^＋ -N and NO2^- -N concemtration in ozone treated seawater decreased.
出处
《渔业现代化》
2008年第4期20-23,共4页
Fishery Modernization
基金
国家自然科学基金项目(30671620)
国家863计划项目(2006AA100305)
国家科技支撑计划项目(2006BAD09A03)
江苏省科技成果转化专项资金项目(BA2005039)
关键词
臭氧生成氧化物
小球藻
生长
水质净化
ozone produced oxidant
Chlorella spp.
micro-algae
seed breeding
water quality purification
