Sewer water undergoes initial cleansing at a sanitation plant to remove solid waste and add beneficial bacteria that break down sludge.
下水道的水在卫生处理惩罚厂担当最初的清理，清除固体废料，添加有益的细菌解析处理惩罚过的人类废料。
This is especially true where the effluent is being discharged to a municipal sewer to avoid shock loadings to the treatment plant.
特别重要的是，在废水排入城市污水管道时不要对城市污水处理厂造成冲击负荷。
Several of these flow into a branch sewer, 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。
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