| 摘要 |
The invention concerns a method for treating effluents of communities equipped with a wastewater system capable of collecting rain or infiltration water, such that the flow rate of effluents to be treated by a treatment station may greatly vary between a dry weather period and a rainy weather period, whereby is provided a purification plant ( 1 ) of capacity substantially adapted to effluent flow rate in dry weather (Qs); upstream of the treatment plant, is provided a filter bed ( 12 ) with grown plants for stocking without fermenting, a polluted hydric excess, and for prior treatment; effluent excess (Qp) caused by rain or a storm is directed onto the filter bed ( 12 ) with grown plants; the water in stored in the filter bed ( 12 ) with grown plants is gradually evacuated to be sent to the treatment plant ( 1 ) located downstream.
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