化学需氧量

化学需氧量（沉淀）来自互联网

Chemical Oxygen Demand -- Settled [ CODs ]

化学需氧量∈[15.70,58.60]（COD）；

Chemical oxygen demand ∈ [ 15.70 , 58.60 ] ( COD );

对化学需氧量而言，中部呈现显著的N形上升趋势。

And , the oxygen demand of middle region presents marked N-shaped curves .

还原性物质对化学需氧量（COD）测定的影响及消除方法

On the Effect of Reducible Substances on COD Determination and elimination

水体中化学需氧量（COD）的快测定

Fast determination of the chemical oxygen demand ( COD ) in water

化学需氧量（COD）测定法的现状及最新进展

The Status and Recent Development for Determination of COD

水质化学需氧量（COD）在线自动分析仪的发展现状

The Development Status of Automatic On-line Chemical Oxygen Demand ( COD ) Analyzer

稠油废水处理的达标外排，其中处理的关键污染指标为COD（化学需氧量）。

The key link of treating heavy oil sewage is pollution index-COD attaining standard .

一种快速测定化学需氧量（COD）的方法

A Method to Rapid Measure Chemical Oxygen Demand

结果表明，经过该法处理后，废水中的化学需氧量（chemicaloxygendemand，COD）和色度的去除率都在95%以上。

The results showed that the removal efficiency of chemical oxygen demand ( COD ) and decoloration efficiency were above 95 % .

化学需氧量（COD）绿色测定方法研究

Green Determination Method of Chemistry Oxygen Demand

通过染料水溶液受到辐照前后的紫外可见光谱的分析，以及化学需氧量、吸光度和溶液pH值的变化，研究其辐射降解脱色特性。

The change of absorption spectra and pH value are described in the paper as well as the degree of decoloration and COD removal .

其中，氮、磷、化学需氧量、生化需氧量等已超出地表水V类标准，水质恶化为劣V类的风险加剧。

Among them , nitrogen , phosphorus , chemical oxygen demand , biochemical oxygen demand has exceeded the V-type water quality standard .

化学需氧量（沉淀）Fenton氧化混凝沉淀法处理焦化废水研究

Study on coke-plant wastewater treatment by Fenton oxidation-coagulation precipitation method

在污水处理行业建模经验的基础上，分别用BP和RBF两种神经网络建立了两个可以预测出水水质中化学需氧量（COD）含量的预测模型。

On the basis of modeling experience in sewage treatment industry , has established two prediction models to predict COD .

提出在多闸坝河流上，利用枯水期断面化学需氧量同步监测数据测算COD综合衰减系数的方法。

A method to calculate the fall coefficient of COD in rivers which have many dams was put forward .

化学需氧量（简称COD）是衡量海水中有机污染物含量的综合指标。

Chemical Oxygen Demand ( COD ) is a composite indicator to measure the levels of organic pollutants in seawater .

化学需氧量（COD）是表征水体中有机物污染程度的一个综合性指标。

Chemical oxygen demand ( COD ) is a synthetical indicator which represents the degree of organic pollution in water .

本课题选取污水水质参数中的溶解氧、化学需氧量、pH值和电导率作为监测参数，并且整个系统的设计分为控制现场和监控中心两个模块。

PH and electrical conductivity are chosen as the monitoring parameters . The whole design of system will be divided into control module and monitoring center module .

研究了预报造纸废水中化学需氧量（简称COD）的简便方法。

Seeking a simple method for determining the chemistry oxygen demand ( COD ) in the waste water from paper making .

结果表明，该方法能有效降低气田水中污染物含量，COD（化学需氧量）去除率达81.8%。

Results show that the content of contaminants has been reduced efficiently , and COD removal rate will reach 81.8 % .

化学需氧量（COD）和生化需氧量（BOD）分别降低78.6%和91.2%，硫化物去除率为98.2%，挥发酚去除率为99.6%。

The chemical oxygen demand and the biochemical demand were reduced by 78.6 % and 91.2 % respectively .

调查发现，盐城海涂环境的污染物主要是工业废水中的化学需氧量（COD）、氨氮和硫化物。

The investigation indicated that the pollutants in sea beach of Yancheng were mainly COD , NH 3 N and S 2 - .

本文回顾了化学需氧量分析方法的发展过程，详述了重铬酸钾法在测定废水中COD方面取得的进展。

Methods use in the determination of COD in wastewater is reviewed , practical consideration of the dichromate method are discussed in detail .

化学需氧量（COD）作为表征水体有机物含量的参数，是评价水体污染程度的重要指标。

Chemical Oxygen Demand ( COD ), as a parameter of water organic content , is an important index to evaluate water pollution extent .

纳米PbO2修饰电极安培检测器流动注射法快速测定化学需氧量

Determination of Chemical Oxygen Demand by Flow Injection Analysis Using Amperometric Detector with Nano PbO_2 Modified Electrode

在海水化学需氧量（COD）测定中，利用烘箱代替海洋监测规范中的电炉对样品进行加热；

A method for the determination of seawater chemical oxygen demand ( COD ), using oven instead of electric furnace to heat samples , was proposed .

同时发现铜络合配位体浓度与BOD（生化需氧量）、COD（化学需氧量）、DOC（溶解有机碳）及黏度存在显著的正相关性。

Meanwhile , the positive relationship between copper ligands concentration and BOD , COD , DOC and the viscosity are found obviously .

通过对虾池内主要环境因子与对虾病毒病相关关系的研究，发现虾池内化学需氧量（COD）太高是诱发对虾病毒病暴发流行的主要环境因子之一。

There is a close relationship between COD and shrimp viral disease . COD is one of the important environmental conditions for breaking out shrimp epidemic virosis .

结果表明，硅藻土的染料吸附效果和对污水化学需氧量（COD）的去除力均比粉煤灰及膨润土高。

The results show that the dye absorption and elimination capabilities for chemical oxygen demand ( COD ) of diatomite are higher than bentonite and fly ash .