查询词典 cod

Aerobic filters have the advantages of both common filters and biological aerated filter. The COD, ammonia nitrogen and turbidity of secondary effluent can be farther removed by aerated filter and the reclaimed water qualities are improved.

好气滤池同时具有普通滤池和曝气生物滤池的优点，能对二级出水中的COD、氨氮和浊度等指标进一步去除，提高再生水水质。

According to these disadvantages, this paper brings forward anew method :CO2- aerometry to determine COD by testing the volume of CO2produced by the oxidation reaction in airtight condition.

该方法的应用原理是通过测定在密闭条件下氧化反应产生的 CO2 气体的体积，并根据相关公式计算COD 值。

Its are main the purpose is the purify rate that raises COD, BOD, restore the self-purification ability of water system and alexipharmic function, increase the environmental size of water system.

其主要目的是提高COD、BOD的去除率，恢复水体的自净能力和解毒功能，提高水体的环境容量。

And too much nitride and phosphate will cause the water abundant in alimentation. For long time, city wastewater factories mainly remove COD and SS and the effect of nitride and phosphate removal is usually not good. So how to control and decrease the concentration of nitride and phosphate in the wastewater and dispose of slightly polluted water has become the new task in the modern wastewater dispose field.

长期以来，城市污水处理厂主要以去除COD和SS为目标，对氮磷等无机污染物的去除效果往往不佳，因此，有效控制和降低污水中氮磷的浓度以及微污染水体深度处理已成为现代污水处理领域中的新课题。

The experimental results showed that the COD and ammonia removal efficiency reach 85% and 92% respectively.

研究结果表明，低DO浓度下COD和氨氮的平均去除率分别为85%和92%。

Furthermore, COD concentration also has influence on ammoniac nitrogen adsorption by zeolite.

此外，污水中的COD浓度也影响沸石对氨氮的吸附。

The simulative results show that the leachates COD of semi-aerobic landfills decrease to National Discharge Standard Class I (100mg/L) in 2-3 years, and ammoniac nitrogen reduce to the standard (15 mg/L) in one year or so.

在室内模拟的条件下显示，准好氧填埋场垃圾渗滤液的COD自然衰减至国家一级排放标准(100mg／L)仅需2～3年，而氨氮只需1年左右即可达到相应的国家一级排放标准(15 mg／L)。

The results show that the addition of talc will increase the proportion of the sludge, strengthen the structure of flocks and greatly improve the sedimentation of the sludge, the sludge bulking is instantaneously controlled, and the addition has not affected distinctly the effluent COD and ammoniate removal.

结果表明，采用滑石粉可增加污泥比重，加固絮体的结构，大大改善污泥沉降性能，从而使污泥膨胀迅速得到控制。同时，又不会对反应器出水COD、氨氮造成显著性影响。

The results indicate that, with HRT of 8?h and temperature of 35℃, the COD removal rate is beyond 80%, the removal rate of TN about 8%, the ammonification rate of organic nitrat.

试验表明：厌氧附着膜膨胀床反应器处理乳品废水，在水力停留时间为8h、中温35℃条件下，COD去处率达到80%以上，对总氮的去除约为8%，出水有机氮的氨化率达70%以上，ρ/ρ由进水的0 5提高到0 8以上。

The characteristics of nitrogen fixation, ammonification , nitrification and denitrification in coastal zones;2. Study on ammonification rate and slow release performance of urea;3. The results indicate that, with HRT of 8?h and temperature of 35℃, the COD removal rate is beyond 80%, the removal rate of TN about 8%, the ammonification rate of organic nitrat.

试验表明：厌氧附着膜膨胀床反应器处理乳品废水，在水力停留时间为8h、中温35℃条件下，COD去处率达到80%以上，对总氮的去除约为8%，出水有机氮的氨化率达70%以上，ρ/ρ由进水的0 5提高到0 8以上。

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。