查询词典 cod

Nitrosification and denitrification in an artificial domestic wastewater with low COD were studied in a sequencing batch moving bed biofilm reactor.

在序批式移动床生物膜反应器内，对进水COD较低的条件下，模拟生活污水的亚硝化及脱氮性能进行了研究。

In the situation of varied water quality of influent, membrane permeate COD was all less than 20mg/L, NH〓-N was less than 1mg/L and turbidity was less than 1 NTU. Because the membrane surface formed gel layer in the filtration process, which reduced membrane pore size efficiently removed nosogenetic germ and virus and attained the demand of water quality standard in wastewater reuse.

在进水水质波动的情况下，膜出水COD值均小于20mg/L，NH〓-N小于1mg/L，浊度小于1NTU；由于在过滤过程中膜面形成了凝胶层，起到了减小膜孔径的作用，从而达到致病菌和病毒的有效去除，能够满足污水回用于杂用水时对水质的要求。

The Tuhai Rivers water is not suitable for water source for its serious pollution, four-grade water quality,overproof 80 times of COD.

近年来，徒骇河水污染已十分严重，据抽样化验，水质为四级，COD超标80倍，故不能将徒骇河水作为水源。

In the fifth chapter, COD of natural water samples were measured by the FI-CL method based on ozonation.

水样分析显示其COD监测结果的相对标准偏差小于10％。

Among the economic crops, pachyrhizus leaf had the most remarkable treating effect, the COD treating capacity per day per unit area was 4.01g, that is, a 50% treating rate; the BOD treating capacity was 1.15 g, that is, a 35% treating rate; the TP treating capacity was 0.23 g, that is, a 16% treating rate; the TN treating capacity was 1.87 g, that is, a 74% treating rate; however, the treating effect decreased as the total amount of pollution entering this system increased by raising the water volume, which was mainly owing to the relatively short hydraulic retention time.

由水质试验结果显示，本系统所选用的作物处理生活污水成效极佳，优於一般湿地选用的植物，以及河滩地原生草种型态，其中以地瓜叶的处理成效最为显著，每日单位面积COD去除速率为4.01 g 、处理效率达50﹪；BOD去除速率为1.15 g 、处理效率达35﹪；TP去除速率为0.23 g 、处理效率达16﹪；TN去除速率为1.87 g 、处理效率74﹪，而以加大水量的方式，增加进入本系统之污染总量，其处理成效减低，主要原因受到水力停留时间较短影响，未来可以增加处理面积、水力停留时间加长、提高原水浓度为后续之研究方向，以达到增加本系统处理成效之目的。

Slaking pretreatment: distilled water and potassium persulphate solution are added and placed into a slaking hole of a COD slaking instrument, and simultaneously blank solution is taken and processed together with a sample to be detected with the same method; C.

消解预处理：加入蒸馏水和过硫酸钾溶液，置于COD消解仪的消解孔中；同时另取空白溶液，与待测样品同时以同样方法处理；C。

The results show that, the proper feeding order and feeding amount are that: aluminium polychloride 19.2 mg/L+PAM 0.075 mg/L, the COD is 98.2 mg/L, it meets secondary discharge standard.

结果表明，最合适混凝剂投加顺序及投加量为：聚合氯化铝19.2 mg/L+PAM 0.075 mg/L。出水COD 98.2mg/L，达到二级处理排放要求。

The contents of 10 species of polycyclic aromatic hydrocarbons and the routine indexes of COD, BOD5, etc.

用HPLC和化学分析法，监测了1999~2002年丰水期和枯水期杭州市地面水中10种多环芳烃的含量和COD、BOD5等常规指标。

Combined with polysilicate aluminum and ferric, this coagulant was thus used to treat tanning wastewater which COD value is ...

这种混凝剂与聚硅酸铝铁絮凝剂配合处理COD为 15 0 0～ 2 0 0 0mg/L制革废水，SS ，COD ，硫化物和铬的去除率分别为 95 %，93 %，92 %和 88%。

ABSTRACT Polysilicate aluminum and ferric saltflocculant was prepared from coal refuse and pyrite slag, and was used as flocculant in the treatment of dyeing wastewater for removing turbidity and COD and decolorizing.

摘 要 研究利用煤矸石及硫铁矿烧渣作原料制备PSAAF并用于印染废水的处理。结果表明，PSAAF有良好的除浊、脱色和除COD性能；尤其对亲水性染料，具有独特的去除效果。

The studies on the developing of new media are very important to the increasing of the area density of HDD and to the implementation of hybrid recoding technology.

光磁混合记录方法，是一种可以突破超顺磁极限的限制，并进一步提高硬盘记录密度和读写速率的一种新型超高密度信息存储方式。

In io, mTOR inhibition promotes T cell anergy under conditions that would normally induce priming.

体内研究中，在正常可激发免疫反应的条件下，抑制mTOR可促使T细胞无能。