在这种情况下，一些公司支付污水处理费，更坦率地排放污水。

In this case, some companies pay a sewage treatment fee, it is more frankly discharge of effluents .

更糟的是，他们排放污水到河流里。

Even worse, they pour dirty water into rivers.

禁止任意利用公路边沟进行灌溉或者排放污水.

Also banned is the use of roadside ditches for irrigation or drainage purposes.

根据此项研究结果，桑普特教授猜测，排放污水当中的人造工业化学物，就起到雌性激素的作用。

The results of his investigations led Sumpter to suspect that man-made industrial chemicals in sewage effluent were acting as female oestrogens.

在结构简单、占地面积小、氧利用率高的多级环流曝气小型实验装置上，对某种石油化工排放污水进行了生化处理性能实验。

A biochemical experiment on petrochemical wastewater treatment is done by a small experimental multi-stage loop and aerating equipment with simple structure and high oxygen utilization factor.