Abstract:

To alleviate the menace to water environment caused by high algae-eutrophicated water evolved in dead algae stack pools around Taihu Lake,it is necessary to treat the algae-eutrophicated water which is rich in organic pollutants,nitrogen and phosphorus. In order to meet the requirements of low cost，complete technology，thorough disposal and sufficient utilization of nitrogen and phosphorus resources,a project-scaled experimental research on the application of the combined process,pulse flume anaerobic fermentation/oxidation ditch/constructed wetland with aquatic vegetables has been carried out. Operating parameters are set as follows：HRT in the pulse flume anaerobic fermentation is 3-5 d,HRT in the oxidation ditch 8-10 h,hydraulic loading in the push flow type constructed wetland 0.1-0.3 m³/(m²· d ) . The average removing rates of COD , TN and TP are 96%, 94% and 98% ,respectively.

Key words: pulse flume anaerobic fermentation, oxidation ditch, constructed wetland, high algae-eutrophicated water, nitrogen, phosphorus

摘要：

为缓解太湖沿岸陈藻池富藻水对周边水环境的威胁,需对含高有机物、高氮磷的富藻水进行处理,为达到成本低廉、工艺完备、处理彻底、氮磷资源利用充分的目标,采用脉冲渠槽厌氧反应器/氧化沟/水生蔬菜人工湿地组合工艺进行了工程规模的试验研究。结果表明,在脉冲渠槽厌氧反应器水力停留时间为3~5 d、氧化沟水力停留时间为8~10 h、推流型水生蔬菜人工湿地负荷约为0.1~0.3 m³/(m².d)的条件下,该组合工艺对COD、TN、TP的平均去除率分别为96%、94%和98%。

关键词: 脉冲渠槽反应器, 氧化沟, 人工湿地, 富藻水, 氮, 磷

CLC Number: 

• X703.1