Artificial Floating Islands For In-situ Bioremediation Of Reclaimed Landscape Water

In this thesis, using artificial floating islands to in-situ bioremediation treat reclaimed water. It’scritical to construct artificial floating island which irectly affects the water restoration effect. Studyon the adsorption properties of the filler, selection of nitrogen, phosphorus with zeolite, ceramicstrong absorptive capacity as floating filler. Calamus, lythrum salicaria and reed as a floating islandplant, the water to purify and has the function of beautifying environment..Repair effect of artificial floating island of reclaimed water landscape of river. The results showthat,under the conditions of temperature of10~35℃, the influent COD of16.00~88.56mg/L,theeffluent concentrations of COD, NH+4-N,TN,TP for the combined process were9.52to73.21mg/L,2.25to48.87mg/L,4.07to48.06mg/L,0.07to0.73mg/L, and the removal efficiencies were5.6%to52.7%,2.1%to29.5%,2.2%to22.1%,8.9%to76.5%.The effluent quality of COD, TP achievedthe entertainment landscape water discharge standards in the city sewage recycling landscape andenvironmental water quality (GB/T18921-2002).Temperature, plant and influent concentration is the main factor influencing the artificialfloating island restoration. Artificial floating island of COD, TN, NH+4-N removal rate with theincrease of temperature rise, the downward trend for TP, which indicates that the removalof COD, TN, NH4+-N temperature is larger, has no obvious effect on TP; Plant growth enhance theremoval efficiency of COD, TN, NH+4-N Island, and the effect of TP on smaller; COD, TN,NH4+-N, TP removal rate increases with increasing the inletconcentration.Through analysis the factors which affect the removal of pollutants on the artificial floatingisland. The results showed that, temperature and floating island plant are important factors affect theartificial floating island to remove water pollutants, has little effect on the water inlet concentration.Study on the artificial floating island plant with repair effect of reclaimed water landscape ofriver. The results show that, under the same conditions of artificial floating island, the effluentconcentrations of COD, NH+4-N, TN, TP for the combined process were6.62to70.57mg/L,1.50to45.70mg/L,3.16to43.46mg/L,0.07to0.73mg/L, and the removal efficiencies were9.0%to70.1%,4.8%to52.9%,5.8%to41.7%,12.3%to87.4%. Visible, build further enhances the repaireffect of artificial floating island withplants.