TY - JOUR
T1 - Diurnal variations in purifying-tanks when use pontederia cordata treating the malodorous river water
AU - Chen, Jian Jun
AU - Lu, Xiao Ming
AU - Lu, Shao Yong
AU - Jin, Xiang Can
AU - Huang, Min Sheng
AU - Zhang, Yong
AU - Zhao, Feng
PY - 2009/12
Y1 - 2009/12
N2 - Aquatic plants (Pontederia cordata) were soaked in two purifying-tanks to investigate the effects of illumination intensity and aeration on diurnal variations of Chla, SP, POD of Pontederia cordata and pH, DO, COD, NH4+-N, TP of water from purifying-tanks when treating the malodorous river water at seven different times, another blank purifying-tank was set as a control. Comparative studies and correlation analysis of these different indicators were carried out to improve the plants working efficiency and provide scientific basis for optimal operation of plant purifying-tanks. Results showed that all indicators affected by changes of light intensity, TP shows best correlation coefficient (r=0.93, p<0.01) of physicochemical indicators and SP behaves best correlation coefficient (r=0.91, p<0.01) of plant physiology indicators in non-aeration purifying-tank; aeration is necessary as diurnal average of DO shows an increase of 0.13 mg/L by treatment of plant meanwhile 1.8 mg/L by plant with aeration, purifying-tanks with aeration got 7.1%, 6.3% higher removing rates of COD, NH4+-N and 38% less TP removing rate than non-aeration plant purifying-tanks (p<0.01); with aeration treatment, significant reduction of Chla, SP content (p<0.05) and increase of POD activity (p<0.05) observed in plants; the changes of illumination intensity and aeration can significantly affect physiological characteristics of plants and should be considered carefully and need further study when treating malodorous river water by plant purifying-tanks.
AB - Aquatic plants (Pontederia cordata) were soaked in two purifying-tanks to investigate the effects of illumination intensity and aeration on diurnal variations of Chla, SP, POD of Pontederia cordata and pH, DO, COD, NH4+-N, TP of water from purifying-tanks when treating the malodorous river water at seven different times, another blank purifying-tank was set as a control. Comparative studies and correlation analysis of these different indicators were carried out to improve the plants working efficiency and provide scientific basis for optimal operation of plant purifying-tanks. Results showed that all indicators affected by changes of light intensity, TP shows best correlation coefficient (r=0.93, p<0.01) of physicochemical indicators and SP behaves best correlation coefficient (r=0.91, p<0.01) of plant physiology indicators in non-aeration purifying-tank; aeration is necessary as diurnal average of DO shows an increase of 0.13 mg/L by treatment of plant meanwhile 1.8 mg/L by plant with aeration, purifying-tanks with aeration got 7.1%, 6.3% higher removing rates of COD, NH4+-N and 38% less TP removing rate than non-aeration plant purifying-tanks (p<0.01); with aeration treatment, significant reduction of Chla, SP content (p<0.05) and increase of POD activity (p<0.05) observed in plants; the changes of illumination intensity and aeration can significantly affect physiological characteristics of plants and should be considered carefully and need further study when treating malodorous river water by plant purifying-tanks.
KW - Diurnal variations
KW - Malodorous black water
KW - Physiological characteristics
KW - Pontederia cordata
KW - Water quality improvement
UR - https://www.scopus.com/pages/publications/74049125235
M3 - 文章
C2 - 20187391
AN - SCOPUS:74049125235
SN - 0250-3301
VL - 30
SP - 3585
EP - 3589
JO - Huanjing Kexue/Environmental Science
JF - Huanjing Kexue/Environmental Science
IS - 12
ER -
