Web在BOD的测量中,通常规定使用20℃、5天的测试条件,并将结果以氧的mg/L表示,记为五日生化需氧量,符号 ,这一指标系由 英国皇家污水处理委员会 (英语:Royal Commission on Sewage Disposal) 确定。 对于一般的生活污水有机废水,硝化过程在5-7天以后才能显著展开,因此不会影响有机物BOD5的测量;对于特殊的有机废水,为了避免硝化过程耗 … WebCOD以mg/L表示,通过水质监测仪器检测出的COD数值,水质可分为五大类,其中一类和二类COD≤15mg/L,基本上能达到饮用水标准,数值大于二类的水不能作为饮用水的,其 …
Report on the Performance of Secondary Treatment …
Webwith Secondary Treatment, 30 mg/L BOD5 Limits, and less than 6 CSO Outfalls . 33 . with Secondary Treatment and BOD5 Limits < 30 mg/L . 9 . with Secondary Treatment, BOD5 Limits < 30 mg/L, and less than 6 CSO Outfalls . 8 . mg/L -- Median BOD5 Monthly Average with 30 mg/L BOD5 Limits and less than 6 CSO Outfalls . 9.2 . mg/L -- 95th percentile ... WebBOD is calculated by using the formula BOD = (D1 – D2)/P. Where, D1 = initial dissolved oxygen concentration. D2 = fifth day dissolved oxygen concentration. P = volumetric fraction of wastewater. BOD values range from 1 mg/L for natural waters to about 300mg/L for untreated domestic sewage waters. If the BOD is 300mg/L and above, sewage is ... green bay wisconsin webcam
如何正确看待水质指标COD、BOD、BOD5? - 知乎 - 知 …
WebBOD(生物化学的酸素要求量)【BOD】biochemical oxygen demand 単位:mg/L (定義等) 検水を好気的(溶存酸素の存在する)状態におき、一定条件のもとで、検水中の … WebJun 18, 2024 · ある工場のA、Bの2系統の汚水が流入している排水処理施設 (BOD除去率95%)がある。 A、Bの2系統の水量は共に500m³/日で、B系統の汚水のBOD濃度が800mg/Lであった場合、排水処理施設からの排水のBODの値を30mg/L以下にに保つにはA系統の汚水のBOD濃度を最大何mg/Lに保つ必要があるか計算しなさい。 化学 数学 … WebOct 14, 2010 · COD = 2,150 mg/L: BOD = 1,100 mg/L : Sample 2: COD = 1,990 mg/L: BOD = 1,050 mg/L : Sample 3: COD = 1,850 mg/L: BOD = 997 mg/L (1.95 + 1.89 + 1.86) ÷ 3 = 1.9 COD:BOD Ratio = 1.9:1: Note: Three samples are used for this example, but 3 samples are too few to calculate an accurate ratio. It is recommended that a minimum of 10 samples … flowers in a vase still life