HU Mian-hao, AO Yan-song, YANG Xiao-e, et al. Comparative studies on purification ability of economic plants in different N level eutrophic water[J]. 2007, 21(2): 147-150.
HU Mian-hao, AO Yan-song, YANG Xiao-e, et al. Comparative studies on purification ability of economic plants in different N level eutrophic water[J]. 2007, 21(2): 147-150.DOI:
For building the ecological engineering to purify the eutrophic water
six economic plants
which are Cress
Ipomoea aqutica
leek
Chinese chives
Celery and Hemerocallis respectively
were selected
and the purification ability and the bio-ecological character of them were studied.Results show that each species has great ability to removal total nitrogen(TN) and total phosphorous(TP)
especial Cress and Ipomoea aqutica
during the 20 d experiment period
the removal percentage to TN and TP is 89.5% and 98.2%
respectively;TN concentration in water declined in negative exponent form with the time continuing.The changes of Chla
BOD5 and COD were observed?during the treatment.It was found that in high nitrogen eutrophic water
except Cress and Ipomoea aqutica
the Chla
BOD5 and COD decreased with time continuing
but the acrid smell in the water aggravated during leek and Chinese chives treatment.The integrated analysis of all indices indicate that in different nitrogen eutrophic water
the purification effect of Ipomaces aquatica was the best