At the same time, the efficiency of COD removal was 87.24%, which demonstrates the coinstantaneous removing of both organic and nitrate nitrogen.
COD的平均去除率为87.24％，基本实现了同一反应器中有机物和硝酸盐的共同去除。
The results showed that modified fly ash was effective to adsorb COD from the brewery wastewater. The efficiency of COD removal rate increased from 50% to 89%.
结果表明：改性后粉煤灰的吸附混凝性能有显著的提高，啤酒废水中COD的去除率从50%增加到89%。
The influence of different COD concentrations and kinds of electrolyte to treatment efficiency was investigated, and satisfied results of 90% COD removal and 95% color removal were achieved.
研究了进水浓度、不同电解质的作用对处理效果的影响，获得了COD去除率大于90%、 色度去除率大于95%的处理效果。
It is found that the COD removal efficiency increases as the increase of reaction time with the same mercury vapour lamp.
试验发现，在同一汞灯照射下，随反应时间的加长，COD去除率呈现增大趋势。
Experimental studies show reactor can be maintained higher COD removal efficiency, and to give full play of anaerobic treatment.
通过试验研究表明反应器可以保持较高的COD去除效率，并能够充分发挥厌氧处理段工作效能。
The possibility of improving efficiency of COD and phosphorus removal was studied, with comparison of difference of COD and phosphorus removal between ordinary biology and electrode-biology reactor.
为了探明外加电场条件下提高生物反应器去污除磷的可能性，试验中比较了普通生物反应器和外加电场生物反应器去污除磷效果的差别。
The effects of reflux time, temperature, amount of adsorbent on the efficiency of removal of Cl - and the microwave digestion conditions, acid medium, catalysts on the COD determination are discussed.
研究了回流除氯时间、温度、吸附剂用量对去氯率的影响，以及微波消解条件、酸介质、催化剂对COD测定的影响。
The result of small simulant experiment show that the removal efficiency of oil reach more 99% and the removal efficiency of COD reach more 80%. the removal effect of color and heavy metal is good.
实验结果表明，对油的去除率达到99％，对COD的去除率达到80％以上，对色度、重金属、氨氮等也都有很好的去除效果。
The effects of the treatment show that the best effect is achieved by pillared acidified bentonite, whose COD removal efficiency is more than 80% and chroma removal efficiency is more than 95%.
处理效果最佳的是柱撑酸化膨润土，其对染料废水COD的去除率可达80%以上，色度去除率可达95%以上。
The influence of different COD volume loading on removal efficiency of urban domestic sewage in suspended carrier biological fluidized bed reactor was investigated.
采用悬浮载体生物流化床工艺处理城市生活污水，考察了容积负荷对其处理效果的影响。
In this experiment, the feasibility of MBR as swine wastewater aerobic treatment stage, COD and ammonia nitrogen removal efficiency and operation parameter were probed.
探讨了MBR作为猪场污水处理好氧段的可行性、除碳脱氮效果及MBR运行参数。
The initial concentration of phenol solution has effect on the ultrasound enhancement ozonization. The COD removal efficiency decreased with increasing of the initial concentration.
苯酚溶液的初始浓度对超声强化奥氧氧化有比较明显的影响，随着苯酚初始浓度的增大，超声强化臭氧氧化对其COD的降解率降低。
These three methods used in the experiments on the pharmaceutical wastewater treatment, the results showed that the basic aluminum chloride treatment of wastewater COD removal efficiency of 36.52%.
在实验中使用了这三种方法对制药废水进行处理，结果表明，碱式氯化铝处理废水COD去除率为36.52%。
Because the removal efficiency of COD in RBC is well, so in the effluent the NO3-3~-N concentration is high, but COD is low.
这是因为，生物转盘的有机物去除效果很好，出水中硝氮浓度较高而碳源含量很低。
The effect of DO concentration and inlet COD concentration on the nitrogen removal efficiency in porous biological particle fluidized bed nitrification and denitrification(SND) is studied.
进水COD浓度及C/N值是影响系统反硝化效果的两个重要参数，为此研究了不同进水COD浓度在不同C/N值条件下的脱氮效果。
The removal efficiency of BOD, COD, SS, nitrification and phosphorus are given in theory.
理论上给出了这个流程中BOD、COD、SS的去除率及脱氮除磷的效率。
The removal efficiency of BOD, COD, SS, nitrification and phosphorus are given in theory.
理论上给出了这个流程中BOD、COD、SS的去除率及脱氮除磷的效率。
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