To explore different plant configuration mode to keep the effect of landscape water quality, which
will provide a scientific basis for ecological water landscape plant configuration, selection of 24 kinds of raw
water wet woody plants and 12 kinds of aquatic plant, according to the principle of plant configuration design
of 9 kinds of stratified water processing plant configuration mode, and is contrast with no plant configuration,by setting the water tank to test samples, test pH, turbidity, TN, NH4+
-N, TP and CODCr six measures of water
quality, and comparative analysis, select the best plant configuration mode. The arrangement of compound plants
can maintain the water quality to different degrees. T1 treatment (Elaeocarpus hainanensis+Hibiscus mutabilisSyzygium tephrodes-Lythrum salicaria-Vallisneria natans-Salvinia natans) of CODCr degradation ability, the
strongest T3 treatment (Syzygium jambos-Cephalanthus occidentalis-Saururus chinensis-Vallisneria natans) to
reduce the turbidity, the most significant effect of the concentration of NH4+
-N T6 (Bombax ceiba+Camptotheca
acuminata-Adina pilulifera+Ardisia crenata-Mentha haplocalyx+Rotala rotundifolia) of TN, TP purifying effect is
best, has fallen by 94.1%, 96.3% and 65.6% respectively than control, 58.2%, 83.9%; T8 processing (Glochidion
zeylanicum-Acorus tatarinowii+Iris tectorum Maxim+Hydrocotyle vulgaris-Vallisneria natans) of the above 6
quality indexes have good reduction effect, achieve Ⅱ class water quality standard, pH, turbidity, TN, NH4+
-N,
TP and CODCr fell by 23.1%, 67.2% and 47.4% respectively than control, 39.8%, 78.7%, 50.0%. Based on the
comprehensive landscape effect, plant growth status and various water quality indicators, the best treatment effect
is achieved by T8, which has a good promotion and application prospect in the purification and water quality
maintenance of micro-polluted water bodies.
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