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生物悬浮填料对微孔曝气氧传质影响的中试研究

Environmental Pollution & Control(2013)

Cited 23|Views24
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Abstract
生物填料在污水处理中常用来增加生物量以提高污水的净化效率,同时生物填料的加入会影响曝气氧转移效率。考察了典型的SPR-1生物悬浮填料在清水中对微孔曝气氧传质过程的影响。结果表明,在水深为6.00m时,SPR-1生物悬浮填料有助于促进微孔曝气的氧传质,当填料填充率为40%,单位体积通气量为0.755m3/h时,氧总转移系数(KL a20)和标准氧转移效率(SOTE)提高程度最大,分别为19.32%和5.78%;当水深为2.33m时,SPR-1生物悬浮填料对微孔曝气氧传质有阻碍作用。在实际污水处理过程中,可以根据水深,调节填料填充率来使填料最大限度地促进氧传质。
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Key words
oxygen mass transfer,biological suspended filler,wastewater treatment,fine bubble aeration
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