Several of these flow into a branchsewer, which joins first a sub-main and then a main sewer taking it to the treatment plant.
这些街道污水管又相结一条污水支管。此支管与次干管连接,然后经主干管将污水送至污水处理厂。
2
This branch, which completes the collecting sewer, is separated from it, under the Rue Menilmontant itself, by a pile which marks the dividing point of the waters, between upstream and downstream.