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不同挂膜方式生物滴滤塔处理含H2S恶臭气体

Keywords: 生物滴滤塔,硫化氢,挂膜,生物除臭

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Abstract:

采用菌剂挂膜,活性污泥挂膜和自然挂膜3种不同方式形成生物滴滤塔,考察挂膜方式对生物滴滤塔去除H2S恶臭气体的影响。结果表明,当进气H2S浓度为5mg/m3时,菌剂挂膜、活性污泥挂膜、自然挂膜形成的生物滴滤塔出气H2S浓度分别为15.7~17.4、11.6~14.8和15.0~15.9μg/m3;塔内压降分别为3~4mm水柱、6mm水柱和4~5mm水柱;喷淋后滤出液中硫酸根的浓度分别为14、22和17mg/L,硫的转化率分别为45%、60%和50%。当进气H2S浓度增大至7mg/m3时,3个塔经过7d的调整后,均能达到稳定状态,稳定后3个塔中出气H2S浓度和压降基本没变,喷淋后滤出液中硫酸根浓度依次增大至25、31和30mg/L左右。采用活性污泥挂膜形成的生物滴滤塔处理H2S的能力比菌剂挂膜和自然挂膜的高。

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