查询词典 pollutants

In this paper, firstly, we studied the photocatalytic hydrogen evolution and decomposition of the pollutants over Pt/TiO_2 in the presence of ethanolamines (ethanolamine, diethanolamine and triethanolamine).

本论文第一部分研究了以污染物乙醇胺同系物为电子给体在Pt／TiO_2上光催化生成氢的反应。

It is a kind of potential environmental endocrine disruptor, similar to the persistent organic pollutants. It can accumulate in the environment and biota and it has adverse effects on the environment and the living creature, such as disrupting the action of hormones related to the skeleton and brain development.

它是一种类似于持久性有机污染物的潜在环境内分泌干扰物，能在环境和生物体内积累，对环境和生物产生严重的影响，如干扰生物的激素系统，影响骨骼和大脑发育等。

Results showed that it was reasonable to evaluate the content of non - dissoluble organic pollutants by turbidity.

实验结果表明：用浊度衡量老龄垃圾渗滤液非溶解态有机物的含量是合理的；垃圾渗滤液中非溶解态有机物对铁促电解去除COD的效率有显著影响。

However, this does not disprove that short changes in intensity or direction of the Kuroshio ever occurred at certain short cooling events. The 10Be minimum during the Younger Dryas event may indicate that the Kuroshio had been once greatly weakened or even terminated in the Okinawa Trough area which could be related to the response of the Pacific Ocean to the Younger Dryas. The 10Be and 9Be in surface sediment show totally different distribution patterns. The 10Be distribution is dominated by the input from Kuroshio and its branch, the Yellow Sea Current, whereas 9Be is mainly influenced by terrestrial input of suspended materials from the Yellow River discharge and deposited in the fine-grain size sediment zone southwest of the island of Jeju. Both 10Be and 9Be distribution patterns are different from anthropogenic pollutants such as heavy metal Pb which is dominantly distributed closely to the coastal areas.

冰期时冲绳海槽北部10Be的沉积通量远远高于太平洋大洋海区，充分反映了黑潮的传送带作用和边缘海的聚焦沉积作用，并表明末次冰期时在千年尺度上黑潮仍流经冲绳海槽，且强度并未减弱。10Be的通量在新仙女木时降到整个岩芯所跨时期的最低点，甚至低于10Be的现代大气平均生产率，因此推测在新仙女木事件时，黑潮的变动特别大，有可能改向或断流。

In this dissertation, some organic pollutants and important biological molecules in life sciences were studied by use of modern electroanalytical chemical techniques.

本论文以有机污染物及生物分子为主要对象，运用不同的方法和手段进行电分析化学研究。

The sludge settling characteristic is satisfying with SV varying from 22 to 30 and SVI varying from 58 to 80ml/g.The sludge bulking problem has been avoided successfully. The excess sludge can be thickened to 3%-4 %. The alkalinity remains equilibrious between the nitrification and denitrification in SBR-BAF system. The COD and TP loading of SBR are 2.08kgCOD/kgMLSS·d and 41.68gTP/kgMLSS·d, respectively. The NH4+-N loading of BAF is 1.16kgNH_4~+-N/m~3.d. The total HRT is about 10 hours which is only about half of suspended growth process for simultaneous phosphorous and nitrogen removal. Under the above mentioned high loadings and short HRT, the mean removal efficiency of COD, TP, NH4+-N, TN is 96%, 98%, 93%, and 84%, respectively. The mean effluent concentration of COD, TP, NH4+-N, TN, SS is 20mg/L, 0.23 mg/L, 3.24 mg/L, 7.68 mg/L, 5 mg/L respectively, which means every index can meet the first class of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant.

最后，以上述最佳运行参数控制SBR-BAF系统运行，长期运行结果表明：系统中悬浮污泥的絮凝、沉降性能良好，SV值为22~30，SVI值为58~80，不再有污泥膨胀之虞，而且可以对剩余污泥进行重力浓缩，浓缩后污泥浓度可以达到3~4%；短程硝化和反硝化使得系统可以维持碱度平衡，无需额外补充碱度；系统在高负荷(SBR反应器COD负荷为2.08kgCOD/kgMLSS.d，TP负荷为41.68gTP/kgMLSS.d，BAF反应器NH4+-N负荷为1.16kgNH_4~+-N/m~3.d)、低水力停留时间(SBR反应器9h，BAF反应器1h，总计10h，约为同步脱氮除磷悬浮污泥工艺的一半)下稳定高效运行，对COD(不计BAF加入的外碳源)、TP、NH_4~+-N、TN的平均去除率为96%、98%、93%、84%，出水COD、TP、NH4+-N、TN、SS的平均浓度为20mg/L、0.23 mg/L、3.24 mg/L、7.68 mg/L、5 mg/L，各项水质指标均达到《城镇污水处理厂污染物排放标准》(GB 18918-2002 )一级标准的A标准的要求。

As composting is a new alternative bioremediation technology for treatment of brganic pollutants and heavy metals, two experiments were conducted to evaluate the effect of using thermophilic composting to break down the content of tetracyclines and H2O extractible of heavy metals.

利用高温堆肥方法，比较不同堆肥处理对畜禽粪中四环素类抗生素TTC、OTC和CTC的降解特点以及对重金属Cu、Zn、Cr，As元素水溶态的影响。

The results of this study showed that the ability of the three aquatic plant species is more significantly to remove pollutants in summer and autumn, especially from June to September, is significantly superior to that in winter, the stage of aquatic plants grow more hearty is better than the stage plant grow more feeblish.

通过2006全年对成都活水公园人工湿地中三种优势挺水植物芦苇、香蒲、伞草所在塘床的进出水口的6个主要水质指标（pH 、DO、COD、BOD5、TP、TN）的逐月对比监测，探索不同植物种类对污水净化效率的影响。

Compared with Cu2O and P25, the flowerlike Cu2O/Cu nanocomposites exhibit higher photocatalytic performance on photodegradation of Procion Red MX-5B under visible-light illumination due to the interaction between Cu2O and Cu, indicating that they are good candidates for the processing of pollutants.

结果表明该复合催化剂中的Cu和Cu2O之间存在相互作用，其催化活性远高于单相Cu2O和商用P25粉末，有望成为污水治理的新型材料。

The samples'concentration level is ng/L, meanwhile, which doesn't go beyond the national standard "Environmental quantity standards for surface water-GB 3838—2002"and "Drinking water quality criteria standard GB5746-85". The study shows that the water purification palnts in The Three Gorges Reservoir Area especially those raw water from Yangtze River and Jialingjia River is safe enough for drinking and its level is low. After having tested and analyzed the raw water samples of 6 water purification plants in Three Gorges Reservoir Area, I have found several variety of PAHs and PAEs. Of which, naphthalene, fluoranthene and DEHP are priority pollutants firstly listed by SEPA..

按照《地面水环境质量标准GB 3838—2002》和《生活饮用水水质标准GB5746-85》对有机氯农药的规定，上述6 个水厂均未超标，表明三峡库区城市给水厂特别是以长江、嘉陵江为水源的水厂，其有机氯农药污染较轻，饮用水水质安全。6 个给水厂的原水均检出含有多种PAHs 和PAEs，其中包括有我国国家环境保护总局首批公布的水中优先检测污染物萘、荧蒽、DEHP。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。