查询词典 cod

Guangzhou City Environmental Protection Bureau Chief Engineer Salicaceae told reporters that a high content of organic milk, the COD (chemical oxygen demand, detect water pollution indicators) amounted to 3,000 mg / l, while the untreated wastewater COD paper only 1000 mg / l; addition, as the issue of dumping milk containing melamine,"It's a question of the food chain as far as possible the post-diluted melamine content is low, almost not detected, but based on people's health is a highly responsible attitude In order to avoid the problem of milk contaminated fish the river."

广州市环保局总工程师杨柳告诉记者，牛奶中有机物含量很高，其COD(化学需氧量，检测水体污染程度的指标)达3000毫克/升，而未经处理的造纸废水的COD只有1000毫克/升；此外，由于倾倒的问题牛奶中含有三聚氰胺，&这有一个食物链的问题，尽量被稀释后的三聚氰胺含量很低，几乎检测不到，但本着对人民健康高度负责的态度，要避免问题牛奶污染河中的鱼类。&

Based on the shortcomings of the COD determination method revised in National Standard, some improvement measures of the standard method, including improvement of slaking phrases, research of substitution catalysts and elimination of chlorine ion disturbance, are compared and discussed. Afterwards, some common substitution COD determination methods, such as correlation coefficient analysis method, electrochemistry analysis method, spectrophotometric analysis method and flow inject analysis method, are introduced.

在论述了国标中COD标准方法不足之处的基础上，本文就标准方法的众多改进措施分类进行了比较与探讨，包括消解方法的改进、替代催化剂的研究以及氯离子干扰的消除，然后介绍了相关系数法、电化学法、分光光度法和流动注射法等COD测定替代技术。

The fresh dewater digested sludge of municipal wastewater treatment plant was suited for vaccinal sludge at the startup of anaerobic reactor and the concentration should not be less 10mg/L; the COD of feed wastewater should be lower than 5000mg/L, and VOL was 20 percent of total VOL; the alkalinity of effluent should be more than 3000mg/L; on the condition of the COD removed 80% can the VOL be elevated.

反应器启动时接种污泥可以选用城市污水处理厂新鲜的脱水消化污泥，浓度不低于10mg/L；进水有机物浓度不高于5000mg/L，容积负荷为满负荷的20％；出水碱度要高于3000mg/L，温度稳定；在有机物的降解率达到80％后再提高负荷。

The operation result of UASB combined with A-SOMBR treating leachate:when volumetrical loading rates were in the range of 0.76-1.61kgCOD/(m3·d), the average removal of COD was 82.66% and the average value of COD in effluent was 188.46mg/L;When volumetrical loading rates in range of 0.058-0.23kgNH3-N/(m3·d),the removal of NH3-N was 88.22% and NH3-N concentration declined to 27.02mg/L.

UASB+A-SOMBR组合工艺处理垃圾渗滤液的研究结果表明：在容积负荷0.76-1.61kgCOD/(m3·d)内，A-SOMBR对COD平均去除率为82.66%，出水COD平均值为188.46mg/L；在容积负荷0.058-0.23kgNH3-N/(m3·d)范围内，A-SOMBR对于UASB产水中氨氮平均去除率88.22%、出水氨氮平均值为27.02mg/L。

The results indicates, with the same level of other parameters, the TN removal can reach 80.0% and 70.9% with the control of dissolved oxygen under the levels of 0.3-0.6mg/l and 0.6-0.9mg/l, respectively; the TN removal upgrades from 80%, 83% to 84.1% with the decrease of sludge load in the system from 0.1, 0.07, to 0.05gCOD/gMLSS·d; the nitrogen removal only reaches 58% when C/N is 4, but can reach more than 80% when C/N is at or over 7, which indicates that the TN removal increases when higher C/N ratio; when HRT increases from 12h, 18h to 24h, the TN removal also increases from 78.6%, 82.0% to 83.0%; the TN removal average in the system increases from 75.6%, 78.5% to 83.0% with the increase of sludge age from 18d, 20d to 24d; the low oxygen conditions in the modified Orbal oxidation ditch model do not decrease the effect of COD removal, and the dissolved oxygen gradient with the distribution of 0-2-1mg/l in the system ensures the COD removal reaching the range of 80%-86%; and the phosphate removal, however, is not good enough, which varies from 40% to 50%, even lower than 35% in occasional situations, and the phosphate concentration in the outflow varies in the range of 1.28-2.38mg/l, which dissatisfies the discharge standard with the level of 1.0mg/l.

试验结果表明，在其它参数相同的情况下，将外沟道的溶解氧分别控制在0.3～0.6mg/l 和0.6～0.9mg/l 两个水平，外沟道中TN 去除率分别为80.0%和70.9%；系统中污泥负荷分别为0.1gCOD/gMLSS·d、0.07 gCOD/gMLSS·d、0.05 gCOD/gMLSS·d时，随着污泥负荷的降低，TN 的去除率却是上升的，分别为80%、83%、84.1%；本试验中，当C/N 为4时，仅能获得58%的脱氮率，当C/N 为7 或更高时脱氮率能达到80%以上，进水C/N 比值越高，总氮的去除率越高；在本试验中采取的水力停留分别为12h、18h、24h 时，外沟道中的总氮去除率随水力停留时间的增加而增加，分别为78.6%、82.0%和83.0%；当系统泥龄分别为18d、20d、24d 时，系统平均TN 去除率分别为75.6%、78.5%、83.0%，随着泥龄的增大TN 的去除率增加；改良型奥贝尔模型的低氧条件并没有降低COD 的去除效果，系统0-2-1mg/l的溶解氧梯度分布使得COD 去除率一般都在80%～86%之间；本试验中磷的去除效果不好，去除率基本在40%～50%之间，有的甚至低于35%，出水磷的浓度在1.28～2.38mg/l 之间，低于1.0mg/l 的出水排放标准。

No relationship, you do not stop a few days to feed on the list, the dose of cod liver oil is calculated one month, your baby in a month as long as the total does not exceed on the line, and cod liver oil to a large number of long-term use will cause poisoning Do not be too worry about the

没有关系的，你停几天不喂就行了，鱼肝油的剂量是以一个月来计算的，你的孩子只要在一个月内的总量没有超过就行了，鱼肝油要长期大量的服用才会引起中毒的，不要太操心了

The lanolin in the flocculent deposit was been extracted by solvent of toluene. A high removal rate of COD can been also got by SPAM only, and raised with the concentration of SPAM. The removal rate of COD reached 94% when the concentration of SPAM was 300mg/L, but the floccules were difficult to deposit and filtrate.

絮凝沉淀物中的羊毛脂以溶剂甲苯提取，单独使用絮凝剂SPAM，COD的除去率也很高，且随SPAM的浓度增大而增大，当SPAM浓度达300mg/L时，COD除去率可达94%，但絮凝物沉降困难，也无法过滤。

When A〓-A〓-O-A〓 system, using fixed beds as anaerobic and anoxic reators and draft-tube fluidised bed as aerobic reactor (total hydraulic residence time 26. 2h, 9, 5, 7. 2 and 5h for each stage, and recycle ratio of mixed liquor from oxic reactor to the first anoxic reactor 5: 1), is used, the removal rates of COD, NH〓N and TN reach 97, 95. 5 and 90% respectively (influent COD, NH〓-N and TN 1204. 8, 274. 3 and 443mg/l respectvely).

采用A〓-A〓-O-A〓流程和简捷硝化-反硝化过程，以固定床作厌氧反应器和缺氧反应器，以内循环式生物反应器作好氧反应器，系统总水力停留时间为26.2h，各段停留时间分别为9h，5h，7.2h和5h，好氧反应器和第一级缺氧反应器之间的混合液回流比为5：1，系统进水COD为1204.8mg/l，NH〓-N为274.3mg/l，TN为443mg/l时，COD、NH〓-N和TN的去除率分别可达97%、95.5%和90%。

After operating for 80 days, the phase of acidification revealed a diameter of granular sludge up to 2～8 mm, a sludge concentration of 73.61 kg·m -3 , a gas-producing rate of 740.0 mL·g -3 COD removed , and a COD volume load...

运行 80 d后，酸化相颗粒污泥直径为 2～ 8mm ，污泥浓度为 73.61kg.m-3，COD去除的产气率 74 0 。0 m L 。g-1，COD容积负荷为 116.0 6kg。

What is even more gratifying is that the use of cod liver oil to prevent occurrence of HIV-infected persons with AIDS, the effects of anti-AIDS drugs zidovudine as good, and the price of cod liver oil is only 5% of the latter.

更令人可喜的是，利用鱼肝油预防 HIV 感染者发生艾滋病的效果与抗艾滋病药物齐多夫定一样好，而鱼肝油的价格仅为后者的5％。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？