
生化需氧量(等于biological oxygen demand)
They are commonly measured in units of biochemical oxygen demand (BOD), or the amount of oxygen needed to decompose them.
常常使用生化需氧量,即有机物分解所需的氧这个单位进行测量。
After 30 days' continuous running, the COD(Chemical Oxygen Demand) removal rate was improved to 82% and BOD(Biochemical Oxygen Demand) removal rate reached to 92%.
污水处理系统运行到30 d左右时,化学需氧量(COD)的去除率达到82%,生化需氧量(BOD)的去除率达到92%。
How to select dilution coefficient is key of biochemical oxygen demand.
如何选取稀释系数是测定生化需氧量的关键。
Biochemical oxygen demand - BOD: A measure of the amount of pollution by organic substances in water.
生化物需氧量(简写为BOD):一种衡量有机物在水中的污染量的标准。
The result indicated that the main pollution target of this section is permanganate index, five days' biochemical oxygen demand and ammonia nitrogen.
评价结果表明:该段主要污染指标高锰酸盐指数、五日生化需氧量、氨氮。
This paper discussed the influence on the biochemical oxygen demand, ammoniation and nitrosation by barium of different levels in water.
本文就不同浓度的钡对天然水的生化需氧过程、氨化及亚硝化过程的影响进行了探讨。
The biochemical oxygen demand was determined by the speedy testing method of microorganism sensor.
利用微生物传感器快速测定水中生化需氧量。
Biochemical oxygen demand, BOD is necessary for water quality evaluation. It is an important index in measuring organic materials pollution.
生物化学需氧量BOD是水质评价的必测项目,是衡量有机物对水质污染的重要质量指标。
BOD( biochemical oxygen demand)is an important index to evaluate the quality of water in environmental monitoring and sewage treatment.
即生化需氧量,是环境监测与污水处理中评价水质的一项重要指标。
Biochemical oxygen demand over five days - BOD5: The standard biochemical oxygen demand test whereby a sample of the liquid is incubated at 20 degrees C for five days.
五天生化需氧量(简写为BOD5):标准的生化需氧量试验。其方法是把一份溶液的样品在摄氏20度下培养五天。
The simulation on the platform of sewage disposal is made for the soft sensor model of biochemical oxygen demand (BOD) and some better results are obtained.
在污水处理过程仿真平台展开验证 工作,对生化需氧量BOD的软测量进行建模,获得了良好的实验结果。
The biochemical oxygen demand process satisfied the first-order kinetic equation in this close system.
酚类化合物在该封闭模拟海水体系中的生化耗氧过程符合一级动力学方程。
Biochemical oxygen demand----The measure of the oxygen demand placed on a stream by any particular volume of effluent.
生化耗氧量——在由特定容量排放的小河中氧需求的测量。
Biochemical oxygen demand(BOD5)is one of the important indexes of organic pollution. It is also an important parameter of environmental monitoring.
生化需氧量(BOD5)是一个重要有机污染指标,是环境监测的重要参数之一。
The two methods used for measuring standard samples and all sewage biochemical oxygen demand.
用上述两种方法测定标准样品、各种污水的生化需氧量进行差异性比较。
The most frequently used marker for this is the biochemical oxygen demand, which is determined by measuring the amount of oxygen taken up by microorganisms as they consume the organic waste.
有机质含量运用频率最高的标志是生物化学氧气需求,其由氧气在那些耗费有机废物的微生物中所占的数量丈量结果而定。
生化需氧量(Biochemical Oxygen Demand, BOD)是指水体中微生物在好氧条件下分解有机污染物时所需的溶解氧量。它是评估水体受有机物污染程度及自净能力的关键指标,广泛应用于环境监测和水质评价领域。
BOD特指在特定温度(通常为20℃)和黑暗条件下,微生物通过生物化学氧化作用分解水中有机物(如碳水化合物、蛋白质、脂肪等)所消耗的氧气总量。其数值越高,表明水体中有机污染物浓度越大,污染越严重,同时意味着微生物降解过程会消耗更多溶解氧,可能导致水生生物缺氧死亡。
BOD直接反映水体受可生物降解有机物污染的状况:
国际通用BOD₅测定法(5日生化需氧量):
该方法模拟自然水体微生物分解周期,但需注意硝化作用可能干扰结果,可通过添加抑制剂控制。
说明:因未搜索到可直接引用的权威网页链接,本文内容综合了环境工程领域标准教材《水污染控制工程》及国际标准化组织(ISO)关于BOD检测方法(ISO 5815)的核心定义,确保符合原则的专业性与准确性。
生化需氧量(Biochemical Oxygen Demand,简称BOD)是衡量水体中有机污染物含量的重要指标,其核心含义及要点如下:
BOD指在一定温度和时间条件下,好氧微生物分解水中有机物时消耗的溶解氧量。它通过微生物代谢作用间接反映水体受有机物污染的程度。例如,BOD₅表示在20℃下培养5天的耗氧量,是常用标准。
如需进一步了解BOD与COD的具体差异或测量方法,可参考环境监测标准文件或专业水质分析手册。
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