
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,即有機物分解所需的氧這個單位進行測量。
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%.
污水處理系統運行到30 d左右時,化學需氧量(COD)的去除率達到82%,生化需氧量(BOD)的去除率達到92%。
How to select dilution coefficient is key of biochemical oxygen demand.
如何選取稀釋系數是測定生化需氧量的關鍵。
Biochemical oxygen demand - BOD: A measure of the amount of pollution by organic substances in water.
生化物需氧量(簡寫為BOD):一種衡量有機物在水中的污染量的标準。
The result indicated that the main pollution target of this section is permanganate index, five days' biochemical oxygen demand and ammonia nitrogen.
評價結果表明:該段主要污染指标高錳酸鹽指數、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.
本文就不同濃度的鋇對天然水的生化需氧過程、氨化及亞硝化過程的影響進行了探讨。
The biochemical oxygen demand was determined by the speedy testing method of microorganism sensor.
利用微生物傳感器快速測定水中生化需氧量。
Biochemical oxygen demand, BOD is necessary for water quality evaluation. It is an important index in measuring organic materials pollution.
生物化學需氧量BOD是水質評價的必測項目,是衡量有機物對水質污染的重要質量指标。
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,是環境監測與污水處理中評價水質的一項重要指标。
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(簡寫為BOD5):标準的生化需氧量試驗。其方法是把一份溶液的樣品在攝氏20度下培養五天。
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.
在污水處理過程仿真平台展開驗證 工作,對生化需氧量BOD的軟測量進行建模,獲得了良好的實驗結果。
The biochemical oxygen demand process satisfied the first-order kinetic equation in this close system.
酚類化合物在該封閉模拟海水體系中的生化耗氧過程符合一級動力學方程。
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測量。
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)是一個重要有機污染指标,是環境監測的重要參數之一。
The two methods used for measuring standard samples and all sewage biochemical oxygen demand.
用上述兩種方法測定标準樣品、各種污水的生化需氧量進行差異性比較。
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.
有機質含量運用頻率最高的标志是生物化學氧氣需求,其由氧氣在那些耗費有機廢物的微生物中所占的數量丈量結果而定。
生化需氧量(Biochemical Oxygen Demand, BOD)是指水體中微生物在好氧條件下分解有機污染物時所需的溶解氧量。它是評估水體受有機物污染程度及自淨能力的關鍵指标,廣泛應用于環境監測和水質評價領域。
BOD特指在特定溫度(通常為20℃)和黑暗條件下,微生物通過生物化學氧化作用分解水中有機物(如碳水化合物、蛋白質、脂肪等)所消耗的氧氣總量。其數值越高,表明水體中有機污染物濃度越大,污染越嚴重,同時意味着微生物降解過程會消耗更多溶解氧,可能導緻水生生物缺氧死亡。
BOD直接反映水體受可生物降解有機物污染的狀況:
國際通用BOD₅測定法(5日生化需氧量):
該方法模拟自然水體微生物分解周期,但需注意硝化作用可能幹擾結果,可通過添加抑制劑控制。
說明:因未搜索到可直接引用的權威網頁鍊接,本文内容綜合了環境工程領域标準教材《水污染控制工程》及國際标準化組織(ISO)關于BOD檢測方法(ISO 5815)的核心定義,确保符合原則的專業性與準确性。
生化需氧量(Biochemical Oxygen Demand,簡稱BOD)是衡量水體中有機污染物含量的重要指标,其核心含義及要點如下:
BOD指在一定溫度和時間條件下,好氧微生物分解水中有機物時消耗的溶解氧量。它通過微生物代謝作用間接反映水體受有機物污染的程度。例如,BOD₅表示在20℃下培養5天的耗氧量,是常用标準。
如需進一步了解BOD與COD的具體差異或測量方法,可參考環境監測标準文件或專業水質分析手冊。
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