| 1. | Population density can be expected to be related to wastewater treatment costs in several ways .
人口密度从多方面影响到废水处理费用。 |
| 2. | More economical waste treatment plant design will be possible with less guesswork .
有可能以较少的猜测来更经济地进行废水处理站的设计。 |
| 3. | Composite samples are used mainly in evaluating the efficiency of waste-water treatment facilities .
混合样主要用来评价废水处理装置的效率。 |
| 4. | For many years chlorine has been the major disinfectant used in water and wastewater treatment plants .
氯作为水和废水处理厂的主要消毒剂已有许多年。 |
| 5. | Dyes are just too refractory to undergo degradation in the time required for conventional waste treatment .
染料在传统废水处理所要求的时间内进行降解是困难的。 |
| 6. | It survives in the effluents of waste treatment plants, even those employing advanced treatment methods .
尽管采取了先进的处理方法，它仍残留在废水处理工厂的排放液中。 |
| 7. | Two important considerations for the construction of a waste treatment plant are the cost and availability of land .
废水处理站的建造要考虑的两个重要问题是造价和占地面积。 |
| 8. | Using a heat exchanger conserves the resource, minimizes corrosion, and skirts the problem, of wastewater disposal .
采用热交换器可保护资源，减少腐蚀，并可避免废水处理问题。 |
| 9. | For information on specific waste-water treatment processes, the reader should consult eckenfelder and nemerow .
有关特定工业废水处理方法的资料可查阅埃肯菲尔德和尼莫鲁的著作。 |
| 10. | The high colour value or absorptivity needed for a commercial dye is not an advantage when that dye ends up in a waste stream .
当它排入废水时，作为商品染料所必须具备的强着色值成的附性显然对废水处理不利。 |
