一种净化水质的复合生物修复系统

在实验室内利用人工模拟方法,选择水蕹菜(Ipomoea aquatica)、泥鳅(Misgurus anguillicaudatus)、沼泽红假单胞菌(Rhodopseudomonas palustris)为工程物种,构建一套水生经济植物-水生动物-微生物复合生物修复系统进行污水修复,研究该系统中动植物生物量及水质指标的变化。结果表明,在23d的实验周期中,水体铵态氮(NH4+-N)下降96.5%,硝态氮(NO3--N)下降82.2%,总磷(TP)下降53.2%,化学需氧量(CODMn)下降24.5%。水蕹菜平均增重31.2%,泥鳅平均增重6.1%。这种复合的生物修复模式具有较好的经济效益与环境效益。

A composite bioremediation system for water purification

By the method of artificial simulation in laboratory,and with water spinach(Ipomoea aquatic),loach(Misgurus anguillicaudatus),and a kind of pseudomonad(Rhodopseudomonas palustris) as the engineering species,a composite bioremediation system of aquatic economic plant-aquatic animal-microorganism was constructed to improve the water quality of sewage.The biomass of I.aquatic and M.anguillicaudatus in the system and the water quality indices were investigated.Within the 23 days experimental period,the nutrient concentrations in the sewage decreased significantly,with the removal rates of NH4+-N,NO3--N,TP,and CODMn being 96.5%,82.2%,53.2%,and 24.5%,respectively.Meanwhile,the biomass of I.aquatic and M.anguillicaudatus was averagely increased by 31.2% and 6.1%,respectively.All the results suggested that this composite bioremediation model had good economic and environmental benefits.