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Study on Impact Factors of Removing Capacity of Organism in Bio-contact Oxidation

机译:生物接触氧化中有机物去除能力的影响因素研究

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Employing bio-contact oxidation to treat sewage, the impact of HRT (hydraulic retention time), hydraulic load and volume load on removing capacity of organism in the system were observe in this study. The results indicated that the removing rate of COD (chemical oxygen demand) in bio-contact oxidation was able to satisfy substandard 1 of urban drainage standard 2 in the "integrated wastewater discharge standard" (GB8978-1996) under this condition: the temperature 17-21 ℃, DO (dissolved oxygen) 2.5-3.5 mg/L, pH 6.57.5. Meantime, when HRT stayed at about 9h, hydraulic load kept at 0.66-0.91 m3/(m2·d), and the volume load was 810 kg/(m3.d), the treating effect of urban wastewater by bio-contact oxidation was better.
机译:本研究采用生物接触氧化技术处理污水,观察了HRT(水力停留时间),水力负荷和体积负荷对系统中生物去除能力的影响。结果表明,在以下条件下,生物接触氧化中的COD(化学需氧量)去除率能够满足“废水综合排放标准”(GB8978-1996)中城市排水标准2的不合格标准1。 -21℃,DO(溶解氧)2.5-3.5 mg / L,pH 6.57.5。同时,当HRT停留在9h左右时,水力负荷保持在0.66-0.91 m3 /(m2·d),体积负荷为810 kg /(m3.d),生物接触氧化处理城市污水的效果为:更好。

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