查询词典 polluted water

And too much nitride and phosphate will cause the water abundant in alimentation. For long time, city wastewater factories mainly remove COD and SS and the effect of nitride and phosphate removal is usually not good. So how to control and decrease the concentration of nitride and phosphate in the wastewater and dispose of slightly polluted water has become the new task in the modern wastewater dispose field.

长期以来，城市污水处理厂主要以去除COD和SS为目标，对氮磷等无机污染物的去除效果往往不佳，因此，有效控制和降低污水中氮磷的浓度以及微污染水体深度处理已成为现代污水处理领域中的新课题。

Water decanter, one of critical equipment disposing polluted water in SBR, was created recently.

滗水器是近年新发展起来的一种先进污水处理工艺SBR法的关键设备之一。

Series 774 Double Check Valve Assemblies are designed to prevent the reverse flow of polluted water from entering into the potable water system.

系列747双止回阀总成用于防止污水回流进入饮用水系统中。

In an experimental enclosure system, floating plant Eichhornia crassipes was planted in summer and submersed plant Elodea nutalli was planted in winter to reestablish water ecosystem, and to investigate the effects of the hydrophytes on the removal of nitrogen and phosphorus from polluted water body and the improvement of water transparency.

在实验围隔系统中，夏季利用凤眼莲、冬季利用耐寒型沉水植物伊乐藻等恢复水生生态系统，研究水生植物对水体氮、磷营养盐、透明度等理化性质的影响。

To prevent marine environment pollution resulting from offshore oil exploitation, besides the formulation by offshore oilfields of the Crash Program to Combat Oil Spills During Offshore Oil Exploration and Exploitation, oil-polluted water treatment equipment has been installed on all drilling platforms, engine-room oil-water separators have also been installed aboard all drilling ships, and oil barriers, chemical de-oiling agents and spill recovery ships provided in all China's offshore oilfields.

为了防止海上石油开发对海洋环境的污染，采油平台全部配备了含油污水处理装置，钻井船舶全部配备了机舱油水分离装置，各油田都配备了围油栏、化学消油剂，以及溢油回收船。海上油田还制定了《海洋石油勘探开发溢油应急计划》。

This article mainly explains the safety principium of infectant factors in waste water vented by the paper making industry in China. Through the study on the experiment in open country and indoors with soil pole, indicating that it is a complicated process of biochemical degradation to form a layer, which has a biochemical capability to process COD degradation in polluted water from paper making industry.

综述我国造纸业污水中的污染因子危及地下水水质安全的机理，通过对野外试验和室内土柱试验的过程及结果进行分析研究，表明在包气带中形成一个以生物化学作用为主的生化层在造纸污水中COD降解是一个复杂的生物化学降解过程；生化层在天然状态下形成，由生物氧化带和生物氧化还原带形成，其形成过程具有明显的阶段性；只有当生物氧化还原带形成后，生化层才发育成熟，具备对COD降解的生化能力；生化层空间分布，仅局限在污水池、渠底部包气带中有垂向渗流的部分。

The thicker the DBL is, the stronger the inhibition will be. Thus, the presence of DBL in a polder reservoir can result in a delay of natural clearing process of polluted water. The effect of salt release from deposited sediments on the water quality will be a long lasting process.

另外，由于扩散边界层的存在，限制了水动力对沉积物与上覆水之间物质交换的增强作用，所以海湾水库沉积物中蓄积盐分对上覆水的影响将是长期的过程。

Fully utilizing river' s own energy to reaerate for river, increase the DO concentration of city river polluted water and improve the water quality by the riverway artificial structures, such as dams and weirs, this is a effective method which is of tremendous social and economic benefit.

通过河道人工建筑物，如坝、堰等，充分利用河流本身所蕴藏的能量为河流复氧、提高城市河流污染水体的DO含量、改善水质状况，是一条可以带来巨大社会效益和经济效益的有效途径。

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。

In order to save water and reduce polluted water discharge,we use elliptical tube in rectangular steel fin tube which is treated in hot dipping zinc and use force cooling by blast axial flow fan to condensate the air in tube then return the condensate to boiler to form a closed circuit ,thus replace conventional water cooling tower.

采用椭圆管穿矩形钢翅片经热浸锌后组装的冷凝翅片管束，用鼓风式轴流风机强制将乏汽在管内冷凝成水返回锅炉形成闭路循环使用，从而可以取代常规开放式水冷却塔，极大地节约汽轮机运行的耗水量和污水排放量，对环境保护起到了积极的作用。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。