[Treatment of polluted urban river water using filamentous green algae].
Filamentous green algae dominated treatment system was set up to remove contaminants from polluted urban river water under lab conditions. Experiments show that TP is decreased up to 50%, associated with 72% removal of TSS. The removal efficiencies of soluble species, PO4(3-) and NH4(+)-N, are up to 90% and 85% respectively. Under heavily polluted conditions (TP > 3.0 mg x L(-1), TN > 22.0 mg x L(-1)), the average removal efficiencies of TP and TN are 89% and 45% respectively, while under light polluted conditions (TP < 0.50 mg x L(-1), TN < 10 mg x L(-1)), the average effluent concentration of PO4(3-) and NH4(+)-N are well below 0.1 mg x L(-1) and 2.0 mg x L(-1) respectively. During the experiments, the biomass of filamentous green algae is increased significantly (38.78%), and at the same time a large number of unicellular Chlorophytes and Cyanophytes species are occurred on the interior wall surface of experimental fertility. The maximum biomass occurs at the highest concentration of DO.
Liang
Xia
X
School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200072, China. asituya@shu.edu.cn
Li
Xiao-Ping
XP
D000641:Ammonia / Q000378:metabolism*; D001673:Biodegradation, Environmental; D002681:China; D000460:Chlorophyta / Q000254:growth & development / Q000378:metabolism*; D002947:Cities; D010710:Phosphates / Q000378:metabolism*; D045483:Rivers / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000378:metabolism*; D018508:Water Purification / Q000379:methods*
D010710:Phosphates; D014874:Water Pollutants, Chemical; D000641:Ammonia