查询词典 water pollution

The results show that 42.86% topsoil samples are polluted by Cadmium, soil synthesis pollution index is moderate, Cadmium pollution degree of topsoil correlate with the environment of sampling sites. The results also show that exchangeable Cd, carbonate-bound Cd, organic-bound Cd and residual Cd are found in all soil samples except for Fe-Mn oxide-bound Cd. Furthermore, the concentration of exchangeable Cd and carbonate-bound Cd, both which have high biological validity, is high. Humus has a certain correlation with exchangeable Cd, organic-bound Cd and residual Cd, and has no obvious correlation with other chemical speciations. Any chemical speciation of Cd has no obvious correlation with pH and total Fe of soil samples. Cadmium in topsoil can be eluviated by acid solution, the quantity of Cadmium eluviated by redistilled water is little. With the rise of pH of eluviating solution, eluviated Cadmium quantity decrease. For the same soil sample, the lower pH value of eluviating solution is, the more fast the Cadmium is eluviated, and the more thequantity of Cadmium is eluviated.

研究结果表明：成都市表生土壤样中有42.86%受镉污染，镉综合污染水平达中度污染，成都市表生土壤镉污染程度与采样点周围环境表现出一定的相关性；除铁锰氧化物结合态镉在部分土壤样中未检出外，所有土壤样均含有可交换态镉、碳酸盐结合态镉、有机结合态镉、残留态镉，且生物有效性较高的可交换态镉和碳酸盐结合态镉占总镉量比例较高；成都市表生土壤中的腐殖质与可交换态镉、有机结合态镉、残留态镉有一定相关性，与碳酸盐结合态镉、铁锰氧化物结合态镉相关性不显著；各形态镉与土壤pH值和全铁的相关性均不显著；土壤中的镉可被酸溶液淋出，重蒸馏水淋出镉量十分微小；随着淋滤液pH值的升高，土壤样的镉淋出量下降，且0～5小时时段的镉淋出量占镉总淋出量比例下降，5～30小时时段的镉淋出量占镉总淋出量的比例上升，对同一土壤样而言，酸度大的淋滤液比酸度小的淋滤液淋出镉速度更快，淋出镉量更大。

According to the heavy metal content ,the quality of the flocculated samples and the water samples after flocculation was evaluated by National Standard. The results showed that the heavy metal pollution was most serious in Spring s sullages , then was in Summer 、 Autumn、 Winter in sequence;the water quality in Lianyungang、 Xiexinggang was best in Summer, then Winter、 Autumn and Spring in sequence, there was little difference of water quality in Ancient Canal、 Hengcaolugang and Hongze Lake .

对絮凝前后泥样和水样中的重金属分别根据国标进行了评价，不同的季节，污染最严重的是春季淤泥，然后依次为夏季、秋季、冬季；连云港、协兴港地区的水质在夏季最好，其次为冬季、秋季、春季；古运河、横草路港、梅梁湾、洪泽湖水质的季节性变化并不大。

This study takes an example from the technical renovation project of a complete system in Guiyang Sanli Drill Steel Material Company, and identifies that waste gas is the principal pollution factors in production processes,and the waste water ,the waste residue and noise are the secondary pollution factors.

以贵阳三力钎具专用材料配套技改工程为例，阐明在生产过程中产生的主要污染因素为废气，其次为废水、废渣和噪声。

Red east city is in the biggest city toward border land, here industry company is less, do not have industrial pollution basically, city life sewage emits into duck green river directly, because sewage discharge capacity is less, water quality of duck green river did not get too big impact, at present water quality of duck green river is 2 kinds of water quality.

丹东市为中朝边境上的最大城市，这里工业企业较少，基本没有工业污染，城市生活污水直接排入鸭绿江，由于污水排放量较少，鸭绿江水质并没有受到太大影响，目前鸭绿江水质为二类水质。

Results: 2005 to 2007 a total of 195 test water samples, the water quality of free residual chlorine and bacteriological indicators of low passing rates, total coliforms bacteria, and the total number of bacteria pass rate was 11.8%, 19.4% and 36.9%, showed that the water sources for people and livestock manure, garbage and other serious pollution.

结果：2005~2007年共检测195份水样，水质的游离余氯和细菌学指标合格率很低，总大肠菌群、粪大肠菌群及细菌总数的合格率分别为11.8%、19.4%和36.9%，表明水源受人畜粪便、生活垃圾等严重污染。

Protecting fertilizer and preventing pollution Making the leakage losses of soil nutrients reduce more than 85%, improving the utilization efficiency of fertilizers; reducing the pesticide content in the runoff, preventing the pollution of groundwater and river and lake water.

保肥防污染，使土壤养分的渗漏损失减少95%以上，提高肥料的利用率；降低泾水中的农药含量，防止地下水和河湖水体污染。

Based on investigation and assessment of heavy metal pollution in water, mud and creature samples of Jilin Songhua River and its upstreams, it is found that mercury pollution tended to be worse, which had ever been controlled efficiently in the early 1980's.

通过对吉林松花湖及其上游入湖河流水质、底泥、动植物样品中重金属污染的调查和评价，发现20世纪80年代初开始基本得到控制的汞污染现象又呈加重趋势。

P species, main as Ca-P and organic P forms, showing rego〓 pollution and karst area of lake watershed, inorganic P〓 related to Ca〓, Al〓, Fe〓 content in the overlying water, sediments is not a simple reservoir of dissolved phosphate and particle phosphate, near the interface, near 98% of total P existed as active forms, they may release to overlying water through reduction dissolution, deadsorption in the period of early diagenesis, only 2% of P as fixed forms, which mainly remained in the sediments, sediment was an important resource of nutrients of ovrelying water.

高原湖泊沉积物中的磷以有机磷和Ca-P形式存在为主，反映了高原湖泊流域污染和碳酸盐地区的整体背景，无机磷形式与水体吸附体Ca〓，Al〓和Fe〓的含量有关。底部沉积物不是溶解性磷酸盐和颗粒磷酸盐的长期储存场所，几乎有98%的磷是活性的形态存在，它们通过早期成岩作用在还原条件下还原，溶解和释放又重新回到上覆水体，只有2%的磷以固〓态的形式稳定保存于沉积物中，因此，沉积物为水体营养程度的重要来源。

In order to prevent this kind of pollution, often spreads the organosilicon water-repellent, the polymer cement mortar, the emulsion resin, the epoxy resin etc on the inside surface of the quartz stone , although it can have certain protection effect, but also has the following insufficiency: Uses organosilicon water-repellent processing, the quartz stone material, cement and the mortar cannot form a sealed surface layer, is unable to suppress the hoar frost separation and the rain spot effectively; Uses polymer cement processing, not only material itself includes the hoar frost ingredient, moreover the water permeability is big, the protection effect is also not ideal

为防止这类污染，常在石材内面涂上有机硅防水剂、聚合物水泥砂浆、乳液树脂、环氧树脂等，虽能收到一定的防护效果，但也存在以下不足：采用有机硅防水剂处理，石材与砼、砂浆被贴面不能形成密封层，无法有效抑制白霜析出物和润斑；采用聚合物水泥处理，不仅材料自身含有白霜成分，而且水渗透率大，防护效果也不理想

This technology can upgrade boiler feed-water from soft-water to shallow desalted water,decrease the pollution discharges,reduce the production cost and improve the quality of steam.

梁轶介绍了工业水处理浅除盐新技术，运用该技术可使锅炉给水由软化水提质为浅除盐水，减少排污，降低生产费用，提高蒸汽品质。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。