Biochemical oxygen demand 中文
http://www.ichacha.net/biochemical%20oxygen%20demand.html WebOct 14, 2010 · BOD (biochemical oxygen demand) BOD is the traditional, most widely used test to establish concentration of organic matter in wastewater samples (i.e., relative strength). BOD is based on the …
Biochemical oxygen demand 中文
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Web5210 BIOCHEMICAL OXYGEN DEMAND (BOD)* 5210 A. Introduction 1. General Discussion The biochemical oxygen demand (BOD) determination is an empirical test in which standardized laboratory procedures are used to determine the relative oxygen requirements of wastewa-ters, effluents, and polluted waters. The test has its widest ap- WebDissolved oxygen (DO) is measured at the beginning of the analysis and after a 5 day, in-the-dark, 20 'C incubation period. The difference of the DO between the beginning and end of analysis is used to calculate the BOD. The BOD test is a bioassay. Bioassay is a shorthand form, commonly used term for biological assay and is a type of in vitro ...
Web生化需氧量（常記為bod）是指在一定條件下，微生物分解存在於水中的可生化降解有機物所進行的生物化學反應過程中所消耗的溶解氧的數量。 [1] 以毫克/升或百分率、ppm表示。 它是反映水中有機污染物含量的一個綜合指標。 如果進行生物氧化的時間為五天就稱為五日生化需氧量（bod 5 ），相應地 ... WebSep 15, 2014 · Conducting the Test. BOD is determined by analyzing the difference in dissolved oxygen from a sample for five days. Because of this standardized time, BOD is often referred to as BOD-5. The dissolved oxygen readings are usually in parts per million (ppm). Higher BOD indicates more oxygen is required, which is less for oxygen …
生化需氧量. 生化需氧量 （Biochemical oxygen demand，简写为BOD），是水体中的好氧 微生物 在一定温度下将水中 有机物 分解成无机质，这一特定时间内的氧化过程中所需要的溶解氧量 [1] 。. See more 生化需氧量（Biochemical oxygen demand，简写为BOD），是水体中的好氧微生物在一定温度下将水中有机物分解成无机质，这一特定时间内的氧化过程中所需要的溶解氧量 。 See more 1. ^ Biochemical oxygen demand, From Wikipedia, the free encyclopedia. [2012-06-14]. （原始内容存档于2024-02-25）. 2. ^ 蒋展鹏等，环境工程学（第二版），北京:高等教育出版社，2005年 3. ^ Steven C. Chapra, Surface water-quality modeling, McGraw-Hill, … See more 虽然生化需氧量并非一项精确定量的检测，但是由于其间接反映了水中有机物质的相对含量，故而BOD长期以来作为一项环境监测指 … See more WebBiochemical Oxygen Demand TDEC – Fleming Training Center 01/2014 SEP; Updated 01/24/2024 JBB o 7.2.6. – Calculate the theoretical dissolved oxygen concentration using a dissolved oxygen table such as Hitchman… o 9.4.3. – Initially, and at the end of each analytical batch of samples, analyze a dilution water sample that is air-saturated.
WebThe study brings insight into earthworms-microorganism's symbiotic interactions for wastewater treatment for the most essential mechanisms (antimicrobial and enzymatic activity) during vermifiltration. The results showed that vermifilter (VF) resulted in effluent with biochemical oxygen demand (BOD) <5 mg/L, chemical oxygen demand (COD) …
WebBiochemical oxygen demand (BOD) is a measure of the dissolved oxygen consumed by microorganisms during the oxidation of reduced substances in waters and wastes. Typical sources of BOD are readily biodegradable organic carbon (carbonaceous, CBOD) and ammonia (nitrogenous, NBOD). These compounds are common constituents or metabolic irc section 1504WebThe Biochemical Oxygen Demand, or BOD, is the amount of dissolved oxygen which is used up by these microorganisms and is roughly equivalent to the amount of "food" (organic matter) found in the wastewater. The more "food" that is present in the water, the more DO will be used up by the bacteria and the greater the BOD reading will be. ... irc section 151WebAbstract Laboratory-scale experiments were conducted to determine the effectiveness of ozonation as a pretreatment option for treating stabilized landfill leachate using reverse osmosis and nanofiltration membranes. Leachate from three different landfills was collected and characterized as stabilized leachate with a ratio of biochemical oxygen demand to … order carpet for pointiac g5WebPurpose of BOD measurement. 1 biochemical oxidation is slow process and theoretically takes an infinite time to go to completion. 2 not a reliable measure of organic content of wastewater, only biodegradable organics are measured. 3 it has a variation up to 20ppm. 4 pretreatment is needed when dealing with toxic wastes and effects of nitrifying ... irc section 152WebBiochemical oxygen demand. Get an email alert for Biochemical oxygen demand Get the RSS feed for Biochemical oxygen demand; Showing 1 - 2 of 2 View by: Cover … order carpet by size生化需氧量（Biochemical oxygen demand，簡寫為BOD），是水體中的好氧微生物在一定溫度下將水中有機物分解成無機質，這一特定時間內的氧化過程中所需要的溶解氧量 。 irc section 1563 eWebBiochemical Oxygen Demand (BOD), representing the biodegradable organic load in water, is a prime parameter to assess water quality. Estimation of biochemical oxygen demand requires prolonged incubation of water samples. Thus, it is a time-consuming as well as energy-consuming process. Therefore, it is not possible to respond rapidly for ... irc section 1563 a