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1·Wastewater treatment plants hold back 83 to 99 percent of them.

废水处理厂截留了其中的83%到99%。

2·Wastewater treatment is a major issue.

而污水处理是一个重要问题。

3·The usual wastewater treatment techniques were described simply.

对常用的污水处理技术作了简单介绍。

4·It also has apparent flocculation effect in other direct dye wastewater treatment.

该产品对其它直接染料废水也有明显的絮凝效果。

5·Bachelor Degree and above major in sewage, wastewater treatment or environmental protection.

本科或以上学历，污水处理或环保专业。

6·The application of nitrification accelerator HB - 1 in wastewater treatment plant was introduced.

介绍了硝化促进剂hb - 1在污水处理装置中的应用情况。

7·Therefore, careful selection of appropriate treatment technology is the key for wastewater treatment.

因此，慎重选择适当的处理工艺是污水处理设计的关键。

8·This paper introduces the workflow of the wastewater treatment, water reclamation and steam reclamation.

介绍了废水处理、水回用及蒸汽回收的流程。

9·In response, IBRD is preparing a programmatic lending facility centered on sewerage and wastewater treatment.

作为回应，国际复兴开发银行正在制定一项以污水系统和污水处理为核心内容的规划贷款机制。

10·That's an important thing to do because there are about 6,000 municipal wastewater treatment ponds in the U.S..

他说，“这很重要，因为在美国，大约有6000多个城市污水处理厂。”