codcr

Various waste water from dye - stuffy could badly pollute environment with their high toxicity and p ( CODCr ) .

染化废水污染物种类多，毒性大、化学需氧量，ρ（CODcr）高，且大部分是生物难降解的污染物质，严重污染环境；

The experimental results show that the CODcr and BOD5 in the effluents decrease with all kinds of activated sludge methods .

本文采用运行方式不同的活性污泥法，对混凝处理后的废纸脱墨废水有机污染物的生物降解性能进行了试验。

After successful invasion water , the high ratio of BOD5 / CODcr . can explain eutrophication of water environment toward the direction development trend .

水浮莲成功入侵水体后，水体表现出BOD5/CODcr高比例说明水浮莲入侵水体后环境朝富营养化方向发展的趋势。

The impacts of the bio-oxidation ponds used active ceramic balls as vectors on CODcr 、 BOD_5 concentrations in sewage

活性陶瓷球为载体的生物氧化池对污水中CODcr、BOD5影响的观察

The BOD5 / CODcr value rises from 0.18 to 0.31 , which provides some conditions for the secondary treatment of wastewater produced from heavy oil .

但是，经超声气浮处理后，污水的可生化性明显得到改善，BOD5/CODcr值由0.18上升到0.31，这为稠油污水的二级生化处理创造了条件。

On the other hands , in the case of CODcr / TN4 , interior return ratio r is the main limited factor for phosphorus removal .

当CODcr/TN4时，内回流比r成为该新型工艺除磷的主要限制因素。

The biodegradability ( BOD5 / CODcr ) of synthetic rubber wastewater could be raised from 0.44 to 0.56 by hydrolytic acidification .

水解酸化可将合成橡胶废水的可生化性由0.44提高至0.56。

The main influencing factors are investigated in experiments , which can affect the treatment effects such as temperature , HRT , mineralization , CODCr volumetric load and packing material .

实验考察了主要影响因素温度、HRT、有机负荷、生物填料性能等对反应器处理效能的影响。

The result shows that the removal rate of CODcr is up to98 % , and then the effluent can meet the overall sewage discharge standard of the second grade .

结果显示，系统的COD总去除率达98%以上，出水水质达到污水综合排放二级标准。

After electrolysis , the biodegradablity of the effluent was greatly increased and BOD5 / CODCr increased from 0.06 to 0.307 .

硝基苯电解后，出水的可生化性有了显著的提高，BOD5／CODcr，由0.06升高到0.307。

When the ratio of CODcr / TN > 4 , the removal of N is subject to the return ratio R , and less influenced by the inlet organic concentration .

当CODcr/TN>4时，硝化液回流比R成为该新型工艺脱氮的主要控制因素，脱氮效率随着进水有机物浓度的降低而下降。

Engineering practice and process analysis show that the pretreatment of coagulative floatation can availably remove chromaticity color , SS and CODCr , and raise capability of shock loading resistant .

实践表明，混凝气浮预处理可以有效去除色度、悬浮物和部分有机物，提高抗冲击负荷能力；

Hydroxypropylguar gum and other organic additives are the predominant components of fracturing fluid recovery , which have excessive CODCr , the most important polluting characteristic of the sewage .

压裂返排液的主要成分是羟丙基胍胶及其它的有机添加剂，具有COD严重超标的污染特征。

Planning results show that the optimal total costs of sewage disposal descend under the condition of the relaxation of restrictive conditions ( CODcr ), but the rate of decreasing is not as the same .

规划结果表明最优污水处理总费用是随着断面水质（CODcr）约束条件的放宽而减小的，但费用的递减速率并不相同。

Under the same process conditions , the removal rate of CODCr 、 TP and SS of Chemical Biological Flocculation were 25 % 、 12 % and 10 % higher than that of traditional Chemical Enhanced Primary Treatment .

化学生物絮凝工艺对CODCr、TP和SS的去除率较传统化学强化一级工艺约高25%、12%和10%。

The results indicate that the removal of chemical oxygen demand ( CODcr ) is about 70 % on the anoxic condition that the pH from 6.5 ~ 7.0 and the temperature from 26 ~ 30 ℃ .

结果表明，缺氧段在pH值为6.5~7.0，温度为26~30℃条件下，CODcr去除率为70%；

The paper tests and analysis Chemical Oxygen Demand ( CODCr ) and Biochemical Oxygen Demand ( BOD5 ) of a case in Hefei municipal landfill leachate , and uses three ways to define biochemical response of leachate .

根据安徽省某生活垃圾处理场渗滤液的检测资料，分析测定其化学耗氧量（CODCr）和生化需氧量（BOD5）。

The ratio of BOD5 / CODcr of the wastewater is determined and then the biochemical oxygen-consumed curve is analyzed . It studies the oxygen-consumed process with logistic model and compares Klog and S0 under different dilution rates .

测定了废水的BOD5/CODcr，在此基础上对可生化废水的生化耗氧曲线进行分析，利用Logistic动力学模型对生化耗氧过程进行动力学研究，并比较各种不同稀释倍数时的kLog和S0。

The effect of chemical oxygen demand ( CODcr ) removal and single cell protein ( SCP ) accumulation during the treatment of high concentration starch waste water treatment was investigated using the purple non-sulfur photosynthetic bacteria-sequence batch reactor ( PNSB-SBR ) method .

为研究紫色非硫光合细菌对于高浓度淀粉废水的处理和菌体蛋白积累效果，采用序批式紫色非硫光合细菌法（PNSB-SBR）处理高浓淀粉废水。

The effect of reaction conditions such as the dosage of H2O2 , initial p-chlorophenol , the dosage of catalyzer addition , initial pH , reaction temperature , carrier gas were studied in terms of phenol concentration and chemical oxygen demand ( CODcr ) .

考察不同氧化体系、H2O2投加量、污染物初始浓度、催化剂投加量、pH值、温度等主要操作条件对总酚和COD（cr）降解影响。

The findings show that the value of BOD5 / CODCr was improved from 0.2 ~ 0.3 to 0.4 ~ 0.5 when wastewater temperature was about 28 ℃ and hydraulic residence time was 8h . , so the process accelerated the following biochemical treatment effectively .

研究结果表明，在水温为28℃，水力停留时间为8h时，可将进水BOD5／CODcr的值由0.2～0.3提高到0.4～0.5，有效促进后续生化处理。

The iron-carbon internal electrolysis in waste water may effectively eliminate the color of the waste water from dyed-stuff production , improve the result of the subsequent biochemical treatment of the waste water and has a certain effect on the removal of p ( CODcr ) .

利用铁炭在水中发生的微电解过程可有效去除染料生产废水的色度和化学需氧量ρ（CODcr），同时提高污水的后续可生化性。

Three kind of biological grids , carried with different fillers , global , suspended and compound one , were compared in removing CODCr 、 SS 、 TN and TP , and the changing of microorganism amount with different carrier biofilms were analysised at the same time .

试验主要对比生物栅填料分别为球形填料、悬浮填料和组合填料时，对水体CODCr、SS、TN和TP等的去除效果，并分析了不同填料生物膜的微生物的数量变化。

The water quality indexes , including total nitrogen ( TN ), total phosphorus ( TP ), the chemical oxygen demand ( CODcr ) and pH value , were respectively determined by alkaline potassium persulphate digestion-UV spectrophotometric method , ammonium molybdate spectrophotometric method , dichromate method and pH meter .

分别用碱性过硫酸钾消解紫外分光光度法、比色法、重铬酸盐法测定了灌溉前后灌溉水水质指标总氮、总磷、化学需氧量（CODcr），同时测试pH值。