查询词典 COD

The methods used to determine COD of water sample are "potassium dichromate reflux method" and "open focused microwave digestion".

在COD的分析方面，采用的方法为"含高浓度卤离子水中化学需氧量检测方法─重铬酸钾回流法(NIEA W516.53A)"，简称高卤法，及"开放式聚焦微波消化法"，简称微波法。

However, by modifying the reaeration coefficient, a good calculation result has been obtained. Similarly, the changing rule of COD can be monitored clearly, which may also provide scientific evidence to further understand the rules of pollution ejection and sediment motion.

经研究表明：考虑波动效应后，对复氧系数进行修正能得到较好的模型计算结果；同时，COD变化规律不仅可以弄清楚，而且可以为进一步研究排污规律和泥沙运动提供科学依据。

Polynomial regression and response surface plots demonstrate that the optimal initial pH and COD are 7.0～8.0 and 6～10 g/L, respectively.

分别以乳酸钠、葡萄糖为底物，考察了不同底物对产电和COD降解的影响。

The high efficiency and high power semiconductor laser with multi-active regions which are cascaded by reverse biased tunnel junction has a higher inner quantum efficiency which can larger than 1, so that it can output higher optical power at the same injected current compared with the normal lasers, meanwhile, it can be designed to large coupled optical cavity, so it will increase the limit of the electro-thermal destroy and the COD.

通过反向偏置隧道结将多个有源区级联起来的多有源区耦合大光腔高效大功率半导体激光器从理论上解决了传统激光器存在的问题，由于其内量子效率大于1，可以在相同电流下输出高的光功率，且可以制成耦合大光腔结构，增大了光腔面积，因此相对于传统激光器而言，其电热烧毁和COD水平都会提高。

We change the Reynold number, pressure, gas flux and liquid flux in the aeration test of wastewater respectively, and analyze their influence on the performance of the bioreactor by evaluating degradation of COD.

在废水实验中，改变了Re数，出口压力P、气体流量Q以及液体流量Q_1，通过对COD降解效果的测试，分析了各参数对涡旋波膜生物反应器性能的影响。

Through dealing with the rhodamine B and Chrysosphenine G, the removal rates of COD were good.

通过对玫瑰红B和直接冻黄两种染料废水复合高级氧化处理可知，对COD去除效果较好。

The experiment is began with the runoff quality on the diverse roofage and different grade roadway, the results are as follows:(1) The concentration of contamination is different with the diverse roofage, and SS value is also different with the style roof;(2) 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;(3) The city roadway runoff is worse than the roadway of university ,because the city roadway runoff involve vehicle n people and the sanitation and material of roadway;(4) Based on the analysis of rainwater quality , the paper provide the process of rainwater treatment for roof, roadway, and lawn.

对教学区内不同建筑物，及道路上的雨水径流水质进行监测，得出以下结论：(1)材料不同，径流雨水中污染物浓度不同，屋顶类型不同，径流雨水中SS浓度亦不同；(2)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；(3)道路污染与路面材料、来往车辆、人员流动、路面卫生状况有关。市区道路相比校园内道路，水质较差；(4)对雨水水质分析基础上，分别对建筑屋顶、道路、绿地提出雨水利用的处理工艺。

When the system run at a low temperature, the biogas production and COD removal rate in UASB reactor went down, but acidification did not occur. The performance of SBR was not influenced greatly by low temperature.

低温运行时，UASB表观沼气产量和COD去除能力都有所下降，但系统未发生酸化现象；SBR对有机物的去除效果受低温影响不大，污泥性能未受太大影响。

The biggest COD and SS value of road runoff at the primary stage was 1 080 mg/L and 3 155 mg/L resp.

道路初期径流COD和SS最大值分别为1 080和3 155 mg/L。

This paper introduces the distribution of sampling points and water sample analysis method and analyzes pollution components of N, P and COD in water sample.

介绍了水质采质采样点的分布情况和水样分析方法。对水样中的N、P污染成份及COD进行了分析。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。