污染物浓度

利用GIS进行海水污染物浓度分布的可视化研究

Research on visualization of pollution concentration distribution in sea water using GIS

应用GIS模拟城市大气污染物浓度分布

Using GIS to Simulate Distribution of Ground Concentration of Urban Air Pollution

胶州湾COD、N、P污染物浓度数值模拟

Numerical simulation on concentration of pollutants COD , N and P in Jiaozhou Bay

基于MATLAB下BP网络在河流污染物浓度预报中的应用

Application of BP neural network based on MATLAB in prediction of river water pollution density

本文应用CFD软件对室内空间流场，温度和污染物浓度场进行数值模拟。

The application CFD software Fluent in this paper simulate flow and temperature fields for indoor , contaminant density field .

北京去年PM2.5污染物浓度大幅下降。

Beijing saw a sharp decrease in the density of PM2.5 pollutants last year .

并对SO2典型日变化趋势、主要污染源以及气象条件对污染物浓度分布的影响进行了分析。

The typical diurnal variation characteristic of SO2 concentration , the main source and the meteorological factors that influence the pollutants were analyzed .

由于滇池水体严重富营养化，N、P污染物浓度居高不下，水质恶化严重制约了社会、经济的发展及环境的改善。

Because of the eutrophication of the Dianchi Lake , the high concentration of nitrogen and phosphorus and the water quality deterioration seriously restricted the development of the society and economy , and the improvement of environment .

根据尿液中污染物浓度高的特点，提出采用化学药剂和EM联合处理尿液工艺。

According to the high concentration of contamination in urine , this paper tries to dispose urine with chemical preparations and EM ( effective microorganisms ) .

UV法COD监测技术是利用有机物质吸收紫外线的特征，连续测量废水、河流与湖泊中的有机污染物浓度。

Chemical oxygen demand monitoring technology of UV method utilizes the ultraviolet absorption characteristics of organic substances for continuous measurement of organic pollutants in wastewater , rivers and lakes .

英国萨里大学（UniversityofSurrey）的研究人员走上典型英式城镇吉尔福德的街头，研究交通堵塞对颗粒污染物浓度的影响。

Researchers at the University of Surrey inEngland took to the streets of Guildford , a typical English town , to look atthe effects of traffic on concentrations of polluting particles .

与传统印染废水相比，碱减量印染废水具有高得多的有机污染物浓度、色度、pH，含有较高浓度的特征污染物&TA。

Opened out some intrinsical and diagnostic problem . Compared with traditional dyeing printing industrial wastewater , alkali-minimization dyeing printing wastewater which was characterized with TA as the principal pollutant , had much higher organic concentration , color and pH.

初期径流污染物浓度很高，随降雨历时的延长，COD和SS浓度逐渐下降并趋于稳定；

In the beginning , the concentration of COD value and SS value is higher , but the runoff quality will be reduced to steady gradually along with the rainfall duration increase ;

对区域城市群大气污染过程影响分析结果表明：不利于污染扩散的天气形势对应着API值的增量，环境过程中每天的增量累积成为环境过程终端的污染物浓度峰值。

According to the analysis of regional air pollution process , disadvantageous synoptic patterns to the pollution diffuse lead to the increment of pollutant concentration , which is accumulated daily and forms the peak of the environmental process .

垃圾渗滤液水质、水量变化大，具有高COD浓度、高金属离子和高氨氮含量的特点，且污染物浓度变化大。

Landfill leachate with water quality and water quantity changes frequently , with the high COD concentration , high metal ions and high ammonia nitrogen content , and the characteristics of contaminants concentration changes a lot .

对山西省晋中市榆次区近10年（1991年～2000年）大气中SO2污染物浓度进行监测，所得数据用方差分析进行分析。

The concentration of SO_2 pollution in the air in Yuci District , Jinzhong , Shanxi from 1991 to 2000 was monitored continuously , and the monitored date were analyzed by using analysis of variance .

湿地进口各污染物浓度在施肥期间达到最高，湿地对污染物去除效果从高到低为硝氮、COD、氨氮、总氮、浊度、总磷。

The pollutant concentration reaches the highest in wetlands imports when fertilizing . The pollutant removal efficiency from low to highly by wetland is Nitrate Nitrogen , COD , Ammonia Nitrogen , Total Nitrogen , Turbidity and Total Phosphorus .

研究表明，OCPs的含量水平有DDTs>HCHs的趋势；悬浮物中污染物浓度高于表层沉积物。

The content levels of OCPs tended to be DDTs > HCHs , and characterized by higher concentration levels in SPMs and lower in surface sediments .

污染物浓度对放氢活性的影响符合Langmuir-Hinshelwood动力学模型。

The effect of concentration of the pollutants on the hydrogen generation rate is consistent with a Langmuir-Hinshelwood kinetic model .

选择上海市路网某典型次干道上的两点进行机动车污染排放因子测试，获得了城市次干道上机动车排放污染物浓度、交通参数、气象参数等实测数据.NET平台下编写一个RSA算法程序。

At two monitoring points established in a certain typical hypo-artery road in road net , Shanghai , measurements of the emission factors of pollutions from motor vehicles were carried out and the concentration of the pollutants , traffic activity and meteorological data were gained .

因自然净化降解和区间汇流的综合作用，污染物浓度指标由上游至下游呈现快速下降的趋势，其中氨氮、COD（Mn）和BOD5指标的浓度去除率分别达到51.6%、41.6%和43.1%。

For self-purification and section runoff concentration , the concentration of pollutant index decreases sharply from the upstream to downstream , thereinto , removal rates on NH ~ + _4-N , COD and BOD was 51.6 % , 41.6 % and 43.1 % respectively .

结果表明，每30mm的有效灌水量使Br-浓度峰下移约10cm，即污染物浓度峰的运移深度与有效灌水量成倍比关系，且可用简化的溶质运移模型估算；

The results showed that the transport depth of bromide concentration peak has proportional relation with effective irrigation quantity , and can be estimated with simplified model of solute transport .

平均风速与N02浓度值之间整年都维持显著的负相关，在冬季与另外两种污染物浓度值之间的负相关较为显著，其他季节相关关系较差。

The negative correlation between mean wind velocity and the NO2 concentration is significant in the whole year .

结论1.水源水中检出的有机污染物浓度均较低，经饮水途径造成的健康风险度较小，远低于ICRP推荐的最大可接受水平。

The organic pollution degree in drinking water sources was relatively slightly , the health risk caused by organic pollutants in drinking water source was much lower than the maximum allowance levels recommended by ICRP . 2 .

试验中，以水体中有机污染物浓度以及THMFP／HAAFP和AOC的浓度为主要考查指标，研究工艺参数对处理效果的影响。

In the experiment , concentration of organic pollutant , THMFP / HAAFP and AOC are selected as the chief quality standard of water , and the main parameters influencing their performance are investigated .

根据焦化废水的污染物浓度及其水质特性，选择较为经济的处理方法缺氧好氧（A-O）法，结合混凝预处理方法，进行处理模拟试验。

Abstract : According to the concentration of the pollution in the coke plant wastewater and its characteristic , choosing a practical wastewater treatment method - anaerobic-oxidizing ( A-O ) method , combining with the coagulant sedimentation , to do the mimic experiments .

本月早些时候降临北京、被称作“末日空气”（airpocalypse）的那场雾霾遮天蔽日，令医院呼吸科病房人满为患，这是北京四年前开始有记录以来，有毒空气污染物浓度最高的一次。

The " airpocalypse " that descended on Beijing last weekend blocked out the sun , filled hospital respiratory wards and brought the highest concentrations of toxic smog to the city since records began about four years ago .

利用Triolein半渗透膜采样技术（TrioleinSPMD）采集了淮河信阳、淮南断面水样，测定了采样器中多氯联苯、多环芳烃、取代苯等有毒有机污染物浓度。

Triolein Semipermeable membrane device ( Triolein SPMD ) was used to monitor toxic and organic pollutants such as PCBs , PAHs , and Substituted Benzenes in the Huaihe River , at the sites of Xinyang and Huainan city , where organic pollution is very severe .

大气污染物浓度预测模式计算的一种改进方法

An Improving Method of Predication Model Calculating for Atmosphere Pollutant Concentration

基于灰色系统理论的污染物浓度模型研究

Research on the Pollutant Concentration Model Based on Gray System Theory