水的净化

For building the ecological engineering to purify the eutrophic water, six economic plants ,which are Cress,Ipomoea aqutica,leek,Chinese chives,Celery and Hemerocallis respectively,were selected,and the purification ability and the bio-ecological character of them were studied.

为建立净化富营养化水体的生态工程，本试验选择水芹、水蕹菜、韭菜、葱、黄花菜、芹菜等6种经济植物，研究了各种植物的净化能力及其生物学特性。

When the water is purified, we can drink it.

当水的净化，我们可以喝。

Reed was planted in the same substrates. In this paper, the efficiency of constructed wetland and the effect of hydraulic retention time on the purifying efficiency for septic tank effluent treatment were studied.

通过在同种基质上种植相同数目的芦苇，研究了垂直流人工湿地对化粪池出水的净化效果，以及不同水力停留时间对污水净化效果的影响。

General to say, the wastewater treatment efficiency of Phragmites communis Trin wetland is best and Typha angustifolia wetland is secondly among 3 plant species, whereas, Cyperus alternifolius is better to remove overmuch phosphorus than other 2 aquatic plant species.

全年总体而言，三种挺水植物中，芦苇湿地对锦江水的净化效果较好，其次是香蒲湿地，而伞草湿地对水体中磷的去除效率相对更高些。

Based on the national tenth five magnitude project — Suzhou City Water Environment Improvement and Synthesize Demonstration item, we carried out the static simulation test and the dynamic simulation test under the condition of heavy pollution loading rate and low transparency and dissolved oxygen in polluted river of suzhou ancient city district. These investigations were on the base of the formers' work. We analyzed the purification effects and rules of plant floating-bed technology on polluted river water, and also applied the technology to purify the polluted river water in Miaojia River. Conclusions were summed up in the following:The dominance plant option test was carried out among Oenanthe javanica, Lolium mutliflorum and Allium sativum under low temperature condition. The results showed that the Oenanthe javanica was the dominance floating-bed plant under low temperature condition. Its net removal rate of TN、 NH_3-N、 TP、 COD_ were 51.3%、 65.2%、 55.6%、 57.6%, respectively, and inhibition rate of algae reached 92.3%.

本论文以国家863重大科技专项——&苏州市城市水环境质量改善与综合示范&项目为依托，在前人研究的基础上，根据苏州古城区污染河道污染负荷重、透明度及溶解氧低的实际情况，通过静态、动态模拟试验，研究了植物浮床技术对污染河水的净化效果及规律，同时在苏州古城区内的苗家河开展了植物浮床技术净化污染河水的示范应用，得出了以下结论：(1)低温条件下对水芹菜、多花黑麦草、大蒜三种浮床植物筛选的试验表明：水芹菜是低温条件下浮床植物的优势种，其对TN、NH_3-N、TP、COD_的净去除率分别为51.3%、65.2%、55.6%、57.6%，对藻类的抑制率达92.3%。

That's where water treatment comes into the picture. A water treatment plant purifies the water by adding coagulant that precipitate impurities and particles in the water, allowing it to be flocculated and filtered. Chlorine is then added as a disinfectant before it can properly be called "tap water".

滤水厂将收集到的原水净化，一般都是将凝集剂加入原水中，使混杂於水中的悬浮物凝集成较大的粒块，再经过沉淀、过滤的净化过程，最后加入氯气消毒才能成为「滤水」。

Condensed water is purified, filtered and mineralized.

冷凝水的净化，过滤和矿化。

Tap water filters trickled down from NASA's need to cleanse water on long space flights.

非蒸馏水净化器是NASA考虑到长途太空飞行中对水的净化的需要而开发的。

Chlorine is often added to water to purify it.

氯是经常补充水的净化。

This is a very common method of water purification and can be used in small portable or camp purifiers as well as big systems in big houses or other places.

这是一个很普遍的方法，水的净化，可用于小型便携式或营地净化器以及大系统，在大房子或其他地方。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了