城市污水中氮、磷的处理是水污染控制的一个重要问题。
Nitrogen and phosphorus removal is important in water pollution control.
因此很有必要采取有效措施进行水污染控制和水循环利用。
Therefore, it is necessary to develop efficient measures for the wastewater control and water recycling.
该研究成果对潮汐水域的水污染控制具有一定的理论价值和实际意义。
The study of this paper is significant to solve the pollution in tidal river.
也像《洁净空气法案》一样，《联邦水污染控制法案》在1977年进行了修正。
如何控制水污染还是一个大问题。
必须采取某些措施来控制水污染。
这已经证明是个主要的而又是个难控制的水污染问题。
This has proved to be a major yet intractable part of the water pollution problem.
同时提出了控制水污染的措施。
In addition, we put forward the countermeasures to control the water pollution.
经济有效地控制氨氮废水污染是当前面临的重大课题。
Economical and effective control of pollution by ammonia-nitrogen waste water is a vital problem currently.
控制海水污染，保护海洋生态环境迫在眉睫。
It is in great requirement to control marine pollution and protect marine ecological environment.
最后，简要介绍了排放废水污染的控制与恢复。
Finally the control and recovery for the discharge of waste water pollution is introduced.
最后，简要介绍了排放废水污染的控制与恢复。
Finally the control and recovery for the discharge of waste water pollution is introduced.
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