There was 75.75% increase on chemical oxygen demand (COD).
生化耗氧量养殖初、末期相比较升高了75.75%；
Chemical Oxygen Demand (COD) is the representative index of sewage water.
化学需氧量(简称COD)是水质污染程度的代表性指标。
Chemical oxygen demand is one of the important parameter in water monitoring.
化学需氧量是水质监测的一个重要参数。
Temperature had an evident influence on chemical oxygen demand (COD) removal.
温度对系统COD去除能力有着比较明显的影响。
Chemical oxygen demand discharges: 30.3 billion tonnes (44% from agriculture).
化学需氧量：303亿吨(44%来自农业)。
Chemical oxygen demand (COD) is a synthetical indicator which represents the degree of organic pollution in water.
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。
The current scope of major pollutants includes sulfur dioxide and chemical oxygen demand, a gauge of water pollution.
现在主要污染物的范围包括二氧化硫和化学需氧量，为一个衡量水污染程度的指标。
The Chemical Oxygen Demand(COD) and the Chromaticity Color ( CC) reduction rates were 93.94% and 64. 62% respectively.
经过微电解工艺处理的染料工业废水色度和化学需氧量（COD）去除率分别为93．94％和64.62％。
The method of flow injection analysis (FIA) is described for continuously measuring chemical oxygen demand (COD) in seawater.
利用流动注射分析技术（FIA）快速、连续测定海水化学耗氧量（COD）。
Measurements of the Chemical Oxygen Demand and the concentration of the anionic surfactants were used to follow the oxidation.
测量的化学需氧量和浓度的阴离子表面活性剂是用来跟踪氧化。
Chemical Oxygen Demand, widely used as an indicator to identify the characters of wastewater, could be disturbed by hydrogen peroxide.
化学需氧量(CODcr)作为废水性质的一个重要指标被广泛地应用，会受到无机物质双氧水的干扰。
Sulfur dioxide emissions and chemical oxygen demand kept falling, down 5.95% and 4.42% respectively, and this trend became more firmly set.
二氧化硫、化学需氧量排放量减少的势头得到巩固，全年分别下降5．95％和4．42％。
The purpose of studying the correlation of total organic carbon (TOC) with permanganate index and chemical oxygen demand (COD) has been stated.
叙述了研究总有机碳与高锰酸盐指数及化学需氧量相关关系的目的。
The relationship between the mixed liquor suspended solid concentration, chemical oxygen demand and wastewater permeation pressure of the membrane was studied.
考察了废水中悬浮物浓度及化学需氧量与炭膜渗透压的关系。
A method for the rapid and accurate determination of chemical oxygen demand (COD) using potassiumdichromate as oxidant under new conditions is described in this paper.
本文提出了一种以重铬酸钾为氧化剂在新的条件下快速及准确测定化学耗氧量（COD）的方法。
This paper discusses in detail that coulometry quickly measures chemical oxygen demand of low polluted domestic sewage of the school and high polluted industrial sewage.
本文详细论述了库仑法快速测定低污染的校区生活污水和高污染的工业污水中的化学耗氧量。
Chemical oxygen demand is an integrative index for evaluating the degrees of organic pollution in water, and is also one of the important parameters in water monitoring.
化学需氧量是评价水体有机污染程度的综合指标，也是水质监测的一个重要参数。
Chemical oxygen demand is one of the important index in water monitoring. In this paper, the recent development for determination of chemical oxygen demand is briefly summarized.
化学需氧量是水质监测的一项重要指标。综述了化学需氧量的测定方法和研究进展。
The contents of petroleum hydrocarbons, chemical oxygen demand and chrome all meet the fishery water quality standard for major water areas in this Bay except a few estuary areas.
除少数河口区外，胶州湾绝大多数海域的石油烃、化学耗氧量和金属铬含量均满足渔业水质要求。
To rapidly determine the pollution extent of wastewater, the potential of near infrared(NIR) spectroscopy for measurement of chemical oxygen demand(COD) in wastewater was investigated.
为快速确定废水的污染程度，研究了运用近红外光谱法测量废水化学需氧量（COD）的可行性。
An experiment was made on the pharmaceutical wastewater treatment with the contact oxidation process by adding effective microorganisms (em) to remove the chemical oxygen demand (COD).
应用生物接触氧化法投加有效微生物菌群(EM)对制药废水中化学需氧量的去除效果进行试验研究和分析。
A method based on all band ultraviolet scanning for measuring water chemical oxygen demand (COD) was introduced, and the method was applied to develop an on-line COD measuring instrument.
介绍了一种基于紫外全波段扫描的水质化学需氧量(COD)测量技术以及运用该技术设计开发的在线COD测量仪器。
The effect of degradation of suspended solid and chemical oxygen demand in coking sewage by filtering and that effect by chemical coagulation were researched and compared through testing.
通过实验，研究、对比过滤、化学混凝降解焦化废水悬浮物、化学需氧量的效果。
The influence factors of chemical oxygen demand (COD) and removal effect of chroma during the wet air oxidation of degradation-resistant pesticide wastewater with high salinity were investigated.
采用湿式氧化技术研究高盐度、难降解农药废水在湿式氧化反应中COD去除率的影响因素及色度的去除效果。
According to the study agriculture is responsible for 43.7% of the nation's chemical oxygen demand (the main measure of organic compounds in water) 67% of phosphorus and 57% of nitrogen discharges.
研究表明，水质43.7%的化学需氧量(测量水质有机化合物的主要指标)、67%的含磷量和57%含氮量应归咎于农业。
According to the study, agriculture is responsible for 43.7% of the nation's chemical oxygen demand (the main measure of organic compounds in water), 67% of phosphorus and 57% of nitrogen discharges.
研究表明，水质43.7%的国家化学需氧量(测量水质有机化合物的主要指标)、67%的含磷量和57%含氮量应归咎于农业。
According to the study, agriculture is responsible for 43.7% of the nation's chemical oxygen demand (the main measure of organic compounds in water), 67% of phosphorus and 57% of nitrogen discharges.
研究表明，水质43.7%的国家化学需氧量(测量水质有机化合物的主要指标)、67%的含磷量和57%含氮量应归咎于农业。
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