本文对溶解氧污染指数计算方法进行了研究,并与其它各种计算方法进行了比较。
The author made a research on counting method of dissolved oxygen pollution index and compared it with other counting methods.
以前,MTBE(甲基叔丁基醚)曾作为汽油充氧剂,但是,在2004年,人们发现它污染了地下水,所以就不再使用它了。
Previously, MTBE (methyl tertiary-butyl ether) was the oxygenate of choice, but fell out of favour in 2004 when it was found to contaminate ground water.
水中的溶解氧可反映水体受污染的程度,是水质监测的一项重要指标。
Dissolved oxygen in water reflects degree of water polluted, it is one of the important indexes in water monitoring.
以前广泛使用的增氧剂是甲基叔丁基醚,后来有研究发现甲基叔丁基醚会污染地下水,因此在2004年久停止使用了。
Previously, MTBE (methyl tertiary - butyl ether) was the oxygenate of choice, but fell out of favour in 2004 when it was found to contaminate ground water.
目的探讨汽车废气污染对交通警察碳氧血红蛋白水平的影响。
Objective to study the effect of automobile exhaust pollution saturation of carboxyhemoglobin (COHb) in traffic policemen.
基于两种机制的提出,可以较好地说明影响淬火裂纹形成的主要原因是氧的污染和不适宜的淬火冷却速度。
The major reason of the formation of quench cracks is the contamination of oxygen in the early processing or unsuitable quench cooling rate during heat treatment.
研究目的研制一种新型的中药氧气湿化液——复方黄连氧气湿化液,以解决现行氧疗中湿化液污染的严重问题,降低湿化液的污染率,预防医院内肺部感染的发生。
ObjectiveTo develop a new kind of herbal humidified fluid, which can reduce the rate of contamination of humidified fluid in oxygen administration and prevent the occurrence of nosocomial pneumonia.
因此应用氧传感器进行反馈的目的在于实现电喷并保证三元催化反应器的净化效果,解决功率、油耗和排气污染之间的矛盾。
So the purpose of applying oxygen sensors to keep feedback is to fulfill electronic fuel injection and solve the contradiction among power, oil-consumption, and exhaust pollution.
优势种为轮虫类和枝角类,这此种类极耐有机污染,耐低溶氧。
These species could tolerate the organic pollution and low dissolved oxygen.
用氧弹燃烧灰化法对有机物中铁的含量进行测定,方法操作简便、快速,实验过程无污染,测定结果可靠。
Determining the iron content in organism by oxygen bomb burning incineration is easy to operate, fast to finish, free of pollution and reliable in different conditions.
在水环境中测定溶解氧的浓度并分析排水沟中溶解氧量可能受到哪些典型的污染物所影响。
Measuring the concentration of dissolved oxygen in an aqueous environment and analyzing the availability of oxygen in waterways exposed to typical pollutants.
本文详细论述了库仑法快速测定低污染的校区生活污水和高污染的工业污水中的化学耗氧量。
This paper discusses in detail that coulometry quickly measures chemical oxygen demand of low polluted domestic sewage of the school and high polluted industrial sewage.
针对厌氧消化过程中有关城市垃圾的分选、 厌氧发酵工艺、二次污染以及肥料的商品化等问题做了具体的分析。
The sizing anaerobic fermentation process secondary pollution and merchandise of fertilizer etc of municipal refuse in the anaerobic digestion process are specifically analyzed.
结果表明:河道水质在净化后,通过引水或充氧使河道保持一定的溶解氧,可有效抑制沉积物中有机物、氨氮等污染物的释放。
The result showed that, after the river water was purified, release of organic, ammonia etc can be inhabited by drawing fresh water or aeration to improve DO concentration in river.
装置主要结构包括:二室堆肥发酵仓、保温层、通风供氧系统、空气加热系统以及二次污染控制系统。
The main components of the bioreactor were:a two-room fermentation case, a thermal insulation layer, an air supplying system, an air heating system, and a secondary pollution prevention system.
水体复氧规律的研究对于预测和评价水中溶解氧含量,确定有机污染水体的自净过程具有重要意义。
The changing law of re-aeration is of great importance for predicting and evaluating the oxygen content in water and the self-purification process of organic pollutants.
好氧生物处理会产生大量的、成分复杂的剩余污泥,如果处置不当容易造成二次污染。
In aerobic wastewater treatment system, large amount of complicated ingredient sludge are formed. If not being disposed properly, the sludge can cause secondary pollution to environment.
通过大量的试验研究,设计了一个合理的环氧富锌车间底漆配方,制备出的涂料漆膜性能符合国家标准,且降低了涂料整体的污染程度。
A reasonable formulation for epoxy zinc-rich shop primer was designed through many experiments, the prepared film property was complyed with national standard, and the paint reduced the pollution.
十一五“期间,沈阳市对浑河实施的大规模综合整治,实现了浑河水环境由”厌氧型严重污染水体“向”好氧型轻度污染水体“的转变。
During the eleventh five-year period, the Hunhe River was treated synthetically, which made the water quality changed from anaerobic heavy pollution to aerobic light pollution.
采用以hcr为核心的好氧生物工艺去除木薯淀粉废水中的污染物质。
The aerobic biologic treatment that is based on HCR (High Performance Compact Reactor) was applied to remove pollutants from the cassava starch wastewater.
该模型不仅反映了网状河道中非稳态的水流及水质变化特点,还反映了水体分别处于好氧、缺氧、厌氧状态下的水质及底泥中主要污染物的变化规律。
The unsteady model with multiparameter reflects the characteristics of the unsteady flow in different directions and that of the unsteady water quality under aerobic, anoxic and anaerobic conditions.
这种催化作用因氧在表面的存在而丧失,活化过程就是清除氧的污染而形成清洁表面的过程。
The activation process is removal of the pollution by oxygen and thereby forms a clean surface.
运用GC/MS技术分析油田废水有机污染物在工艺流程中相对组分变化的规律,揭示了水解酸化-好氧法处理油田废水过程中的污染物迁移和降解规律。
Using GC/MS technology, the relative content of various organic pollutants was analyzed to discover the transfer and degradation law in the oilfield wastewater in biological treatment process.
对人工搭建的三个不同坡度的小型溢流堰堰体上下的水质进行定期监测,考察溢流堰坡度对水体溶解氧和有机污染物浓度的影响。
Three small overflow dams with different grade in an urban river were constructed and the water quality in different fixed sample points were periodically monitored.
利用质量平衡,建立了污染物量和水质之间的直观关系,发现了繁忙的机动船只运输对运河产生油污染的同时,会对水体中溶解氧产生有益的贡献。
It found out that the extensive barge traffic on the river plays a beneficial role on dissolved oxygen besides generating oil pollution in the water column.
以氧弹燃烧法破坏有机物进行元素测定,方法简便、快捷、无污染。
Oxygen bomb combustion method, which destroys the organic substances, is both simple and convenient as well as fast in operation, and pollution free in element analysis.
本研究通过对畜禽粪便污染及其处理现状的调查、分析,选择了畜禽粪便好氧堆肥的技术路线。
This study was treatment of livestock waste pollution and the status of the investigation, analysis, selection of livestock and poultry manure composting technology line.
本研究通过对畜禽粪便污染及其处理现状的调查、分析,选择了畜禽粪便好氧堆肥的技术路线。
This study was treatment of livestock waste pollution and the status of the investigation, analysis, selection of livestock and poultry manure composting technology line.
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