自净

山溪小河中COD（Mn）的自净作用研究

Study on the Self-purification of COD_ ( Mn ) in Stream Water

晋江河口水域中COD自净特征及其成因分析

Analysis of characters of COD self-purification and its cause in Jinjiang Estuary

封闭式精养池塘N、P营养盐的自净作用研究

Research on the Self-cleaning Mechanisms for Nitrogen and Phosphorus Nutrients in Farming Ponds

COD在包气带地层中自净能力的试验研究

Experimental study of the self-purification capacity of COD in the aeration zone layers

结果表明，重金属喷施入水后，鱼塘水体对Cu、Pb均具有明显的自净能力；

The results showed that the fishpond water absorbed Pb and Cu after the heavy metals were sprayed into the water ;

污染物输运是探讨海洋自净能力、进行海域环境评价的重要课题，本文旨在研究风暴作用下渤海内污染物（COD）的输运。

The issue of the transportation of pollutant COD is important when discussing the self-purification capability and the environmental evaluation .

珠江口咸淡水交汇区水中COD（Mn）、油类、砷自净规律的试验研究

An experimental study on the selfpurification of cod_ ( mn ), oil and as in the mixing area of saltwater and freshwater in Zhujiang River Estuary

并以COD为指标对湄洲湾海域迁移扩散自净能力进行了综合评价，得到了排放口容许COD排放量及实际生产排放污水对环境影响程度的评价，以及海湾再能接纳排污总量的能力。

Furthermore , a comprehensive assessment of the self-cleaning ability of sewage transference and diffusion in Meizhou bay enabled the establishment of permissible amout of COD .

众所周知，BOD3是测定废水中有机物总体含量及其耗氧生化自净能力的重要指标。

BOD5 is an important index of total amount and oxygen consumed self - purifying ability of organic matter in waste water .

分别在已疏浚和未疏浚河道底泥的影响下，考察了上覆水体自净系数&BOD减少速度系数和COD减少速度系数，以比较疏浚对于改善水体自净能力的效果。

We examined self - purifying coefficient - BOD and COD reduction coefficient in overlying water at the presence and absence of dredging sediment as well as comparison the dredging effectiveness .

用溶胶-凝胶法研究了掺镧TiO2纳米薄膜材料。在钛醇盐溶液前驱体中，通过提拉方式镀膜在玻璃上，从而形成自净玻璃。

In this paper , lanthanum-doped TiO2 nanometer film materials coated on glass were prepared in Ti ( OBu ) 4 precursor solutions by sol-gel processing .

分析结论是，污染源水的生物法预处理是一种经济有效且无副作用的方法，其本质是水体天然自净过程的人工化，对NH3-N、酚和有机物，具有较满意的去除效率。

It showed that biological pretreatment of polluted source water was effective and without side-effect specially in removing ammonia nitrogen , phenol and organic contaminants .

BOD5是保证水体自净的指标之一，也是研究废水可生化降解和生化处理工艺设计和动力学的重要参数。

BOD is an indication of guaranteeing water self-pure , also an important parameter of researching biodegradation , biochemical process design and dynamic of waste water .

利用连续11a的水质监测资料和其它有关的监测、调查资料，研究晋江河口水域中COD的短期和长期自净特征。

Base on the monitoring data for 11 years , including other the concerning information and study on COD of the short-term and Long-term self-purified character in Jinjang estuary was done .

采集发酵气体又能促进水体自净功能的提高，改善水体质量，也能减少温室效应比CO2高20倍的CH4气体逃逸到空气中，改善大气质量。

And also help water self-purification and water quality . It can reduce the smelly and harmful gas , H2S and stop CH4 , effective gas in the greenhouse , from escaping into the air . it can improve air quality .

在无机氮组成中，NO3-N高达91.25%，而NO2-N仅占1.05%，这表明调查水域有较强的自净能力。

Among inorganic nitrogens , NO_3-N was as high as 91.25 % , while NO_2-N was only 1.05 % , indicating that the Three Gorges Reservoir has great self-purification capacity .

从夏季COD与Chla呈显著正相关和广西六大海湾的生物资源量分布状况可以判断，生物降解作用在该湾水体自净过程中具有重要的、直接的影响作用。

There was positive correlation between COD and chl-a in Summer and the distribution of biological resource volume of the six biggest bays in GuangXi , from that , we can say that the affection of the biodegradation in the self-purifying process of the bay was important and direct .

R（NO3-N）与Chl-a的显著正相关性以及水域中生物种类的多样性和较高的生物资源量，则显示了水体自净能力对海洋生物的重大影响作用。

The strong positive correlation of R ( NO3-N ) and Chl-a , the variety of biological lives and the higher biotic stock number in the water area show that the self-purifying ability of water body has a great effect on the marine lives .

输液污染与输液自净器的临床价值

Infusion Fluid Contamination and Clinical Use of Air Self-filter for Infusion

振兴规划及行业自净或加快盈利恢复

Reviving layout and industry eliminating will help to restore enterprises profits

依靠洁净室和自净系统保证光盘品质

Assuring the qualities of optical media by cleaning room and self-cleaning system

自然保护区与环境自净关系探讨

An approach to the relationship between natural reservation and environmental self-purification capacity

活性污泥法是水体自净的人工化。

Activated sludge method is artificial self decontamination of water .

微型藻类在海水环境自净中的作用

The role of micro-algae in the self-purification of marine environment

粉尘粒子在巷道空间中自净特性的研究

Study on the Self purifying Characteristic of Dust Particles in the Roadway

湖库水体对石油类物质的自净能力评价初探

Estimating of Lake and Reservoir Water Body 's Self-purification Capability for Oil

洛阳市区包气带中污染物自净规律初步研究

Primary Research on the self-purification of Contamination in unsaturated zone

含氰海水自净实验的研究

Study on experiment of self purification of cyanide bearing seawater

地下水的性质及其污染与自净

The Nature of the Groundwater and Its Pollution and Self-cleaning

泾河下游可降解污染物的自净特征

The degradation characteristic of organic pollutants in the Jinghe River