水质污染

The results showed that Jussiaea stipulacea Ohwi and Eichhornia crassipes had higher values of V and K than Elodea nuttallii, illuminated that the two floating macrophytes were proper for pre-treatment of the seriously polluted water.

结果表明：漂浮植物黄花水龙和凤眼莲具有较大的吸收速率V和K值，因此，它们更适合作为先锋植物对污染严重的富营养化水体进行前期的修复治理，待水体水质提高到一定的程度时，再利用去污能力低的沉水植物进行对修复水体水质的维持和提高，并在此基础上可逐步建立一个较为稳定的、生物多样性的生态系统。

It adsorbs grains in high temperature water,so to effectively control growth of grains and reduce them to amorphous,soften and floatable dregs.

由于近年来河流水质受到不同程度的污染，水质条件较以前差。

The Fuzhou\'s inner river belongs to the rich nutrition type .The water quality changes little comparing with the investigating results ten years ago but the black and foetid rate has been improved . Eventually, we analyzed the polluting factor of the inner water and provided some useful suggestions for the management.

实验结果与十年前内河水质调查的结果进行比较，得出福州内河水质没有明显的转变，但黑臭率有所改善，最后分析了内河污染的成因，并提出治理的意见和建议。

This paper discuss the pollution of Xingyun Lake rivers ,By the use of ponds space, we get the corresponding engineering measures to purify water, to reduce the load of pollutants which into the lake, to improve the water quality of estuarine waters, Finally we can prevention and cure the infectant water let into the lake.

本文针对星云湖入湖河流存在的污染问题，利用鱼塘空间，提出相应工程措施，以净化水质，降低入湖污染物负荷，有效改善河口区水域水质，实现入湖河流水污染防治的目标。

But because of their tubular product defect, easy to produce and corrode, get rusty, marry dirt, leaks and all disadvantage of filling etc.s in using because of zinc-plated steel tube, Thus cause serious two pollution to water quality, microcosmic show as water sample large intestine liver fungus and total amount of bacteria exceed standard seriously, The phenomena, such as" yellow water"," black water"," red water",etc. appear on the macroscopic, water quality worsens; Because corrosion seepage has destroyed users inhabitting and working environment on the other hand, Interfere normal life , influence life quality of people , cause water resource enormous to waste, This require one new-type green one substitute products of environmental protection appear urgently.

但由于镀锌钢管因其管材自身的缺陷，在使用中易产生腐蚀、生锈、结垢、泄漏及诸塞等弊病，从而对水质造成严重的二次污染，微观上表现为水样大肠肝菌及细菌总数严重超标，宏观上出现"黄水"、"黑水"、"红水"等现象，水质恶化；另一方面因锈蚀渗漏破坏了用户的居住及工作环境，干扰正常生活，影响人们的生活质量，并导致水资源的巨大浪费，这就迫切要求一种新型的绿色环保的替代产品出现。

Taking Wuliangsuhai Lake,which is a typical shallow weedy lake lies in Hetao irrigate district in the north of China,as a research object,combining the measured water quality data with the spatial data,using the method of Principal Components Analysis based on factor analysis,the water quality parameters of WL are summarized into seven principal components,namely the index ...

以位于我国北方的河套灌区中的草型浅水湖泊乌梁素海为研究对象，将实测的湖泊水质监测数据与空间数据结合，采用基于因子分析的主成分方法将乌梁素海的水质参数概括为7个主成分，即：富营养化特征指标、湖泊盐化特征指标、湖泊有机物污染指标、湖泊形态特征指标、水体酸碱指标、水体藻类生物量指标、植物生长环境指标。

CODMn was taken as the index for assessment and control of secondarily polluted water in distribution system.

将CODMn作为饮用水在管网输配过程中产生二次污染的水质评价和控制指标，并通过实验的方法对水质模型中的参数进行了估计。

The samples'concentration level is ng/L, meanwhile, which doesn't go beyond the national standard "Environmental quantity standards for surface water-GB 3838—2002"and "Drinking water quality criteria standard GB5746-85". The study shows that the water purification palnts in The Three Gorges Reservoir Area especially those raw water from Yangtze River and Jialingjia River is safe enough for drinking and its level is low. After having tested and analyzed the raw water samples of 6 water purification plants in Three Gorges Reservoir Area, I have found several variety of PAHs and PAEs. Of which, naphthalene, fluoranthene and DEHP are priority pollutants firstly listed by SEPA..

按照《地面水环境质量标准GB 3838—2002》和《生活饮用水水质标准GB5746-85》对有机氯农药的规定，上述6 个水厂均未超标，表明三峡库区城市给水厂特别是以长江、嘉陵江为水源的水厂，其有机氯农药污染较轻，饮用水水质安全。6 个给水厂的原水均检出含有多种PAHs 和PAEs，其中包括有我国国家环境保护总局首批公布的水中优先检测污染物萘、荧蒽、DEHP。

For the purpose to be used in polluted water bio-remedy, this paper shows the pilot study of the growth characteristic of Jussiaea. stipulacea Ohwi in different eutrophic water body and high Cd~(2 ) contented water.

本文以黄花水龙(Jussiaea.stipulacea Ohwi)为研究对象，初步研究了其在不同程度富营养化水质中的生长特性和在高浓度镉污染水质中的耐受能力，探讨其在水污染生物修复工程中的广泛利用的可能性和发掘潜力。

WTBX〗Chlamydomonas microsphaera〖WTBZ〗 was dominant species in winter,and the dominance index changed from 7143% to 9628%.

同时，生物学评价显示，蠡湖冬季水质劣于春季，与化学评价结果相一致；但从评定级别看，生物评价认为，2007年冬、春季节蠡湖水质分别处于重污染和中度污染状态，较化学评价的污染程度重，显示出两种方法的差异性。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。