再生水景观水体水质保障的GFH+BF处理系统

采用GFH+BF处理系统开展再生水景观水体水质保障研究,以GFH(granular ferric hydroxide)出水为人工湖源水,以BF为湖水净化补给枢纽.结果表明,GFH对TP、DOM(dissolved organic matter)和N等污染物都有很好的去除效率,TP、NH4+-N、NO2--N、DOC、U...

Reclaimed Water Quality Control for Landscape with GFH+BF Treatment System

In order to control reclaimed water quality for landscape, GFH + BF treatment system was studied. In the experiment, GFH effluent was the inlet water of artificial lake, and BF was used as core process for contaminants removal and lake water supplying. The results showed that GFH could reduce TP, DOM and N very effectively, the removal rates of TP, NH4+ -N, NO2- -N, DOC, UV254 and color were 89.8%, 23.3%, 58.7%, 17.6%, 26.1% and 41.2%, respectively. After GFH effluent flowing into artificial lake, the concentrations of TP and NH4+ -N increased slightly. NO2- -N and NO3- -N were nitrogen source for the growth of cyanobacteria and the removal rates were 68.3% and 84.9% , respectively. Bank filtration removed 33.0% TP, 39.5% NH4+ -N, 42.2% NO3- -N, 26.0% TN, 24.5% DOC, 12.1% UV254 and 33.0% color for landscape water. In conclusion, "GFH + BF" treatment system reduced contaminants greatly from reclaimed water and landscape water, and lake water cycle was achieved, which could avoid eutrophication of landscape effectively.