| 1. | Wastewater from a number of cities is now cleaned .
现在，许多城市里的废水被净化。 |
| 2. | Liquid waste flows out from some factories into the sea .
有些工厂将生产废水向海中倾泻。 |
| 3. | Waste treatment by ion exchange produces a reusable water .
用离子交换处理废水可产生回用水。 |
| 4. | Industrial effluent often causes a problem to people 's health .
工业废水常常危害人们的健康。 |
| 5. | The sewer lines may then become clogged with inert materials .
废水管路可能被这种惰性物质堵塞。 |
| 6. | This is particularly pertinent in the analysis of industrial wastes .
在工业废水分析中这点特别重要。 |
| 7. | A flow chart of aluminum processing waste stream is presented in figure 22 .
图22示出铝生产废水的流程图。 |
| 8. | The acid waste waters are discharged into a sump or the sewerage system .
酸性废水被送往销毁池或阴沟系统。 |
| 9. | There is a substantial variation in waste strength and waste treatment costs .
废水浓度和处理费有明显差别。 |
| 10. | Most polymer emulsion may coagulate when they enter waste streams .
多数聚合物乳浊液在进入废水流时可能凝聚。 |
