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Vickers威格士KBDG5V82C330N200EXM2PE7H110
Vickers威格士KBDG5V533C80NM2PE7H110
Vickers威格士KBDG5V733C170NXTM1PE7H110
Vickers威格士KBDG5V733C170NXTM1PH7H110
Vickers威格士KBDG5V82C330N200TM2PE7H110
Vickers威格士KBDG5V72C180NM1PE7H110
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Vickers威格士KBDG5V733C170NEM1PE7H110
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Vickers威格士KBDG5V72C180N100EXHM1PE7H110
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Vickers威格士KBDG5V833C330NXTM1PE7H110
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Vickers威格士KBDG5V72C180NEM1PE7H110
Vickers威格士KBDG5V733C130N65TM2PE7H110
Vickers威格士KBDG5V72C180N100EXM2PE7H110
Vickers威格士KBDG5V833C330N200M2PE7H110
Vickers威格士KBDG5V82C330N200TM1PE7H110
Vickers威格士KBDG5V533C60N35XTHM1PE7H110
Vickers威格士KBDG5V833C330N200EXM2PE7H110
Vickers威格士KBDG5V533C80NTM2PH7H110
Vickers威格士KBDG5V733C130N65XM2PH7H110
Vickers威格士KBDG5V82C330NEM2PE7H110
Vickers威格士KBDG5V72C180NTHM1PE7H110
Vickers威格士KBDG5V82C330NXTM1PH7H110
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Vickers威格士KBDG5V82C330NXM2PE7H110COD是利用化学氧化剂(如高锰酸钾)将水中可氧化物质(如有机物、亚盐、亚铁盐、硫化物等)氧化分解,然后根据残留氮化剂的量计算出氧的消耗量,是表示水质污染度的重要指标。其值越小,说明水质污染程度越轻。COD量浓度的超标为各种细菌的滋生提供了温床,从而产生了生物粘泥。随着生物粘泥的增多导致了冷却水管线的堵塞,生物粘泥在高温下硬结,而生物粘泥用来溶解是很困难的,这与维修现场用疏通冷却系统困难的现象相吻合。