The result demonstrate that aeration by multilevel weirs of the BFG can improve the water quality of effluent, especially can effectively decrease the odour and organic contaminants in water.

• 试验结果表明，生物滤沟采用多级跌水的自然曝气方式是成功的，能有效的控制出水的嗅味、氨氮值和提高有机物的去除效果。