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改性粉煤灰净化含磷废水的研究
Authors
刘军坛
刘蕾
+7 more
姜灵彦
彭伟功
李见云
王香平
罗旭
许可
邓彤
Publication date
1 January 2010
Publisher
Abstract
采用改性粉煤灰对含磷废水进行净化,考察了pH、吸附剂用量、吸附时间和吸附温度对净化效果的影响。结果表明:(1)当pH为9时,磷净化率达到最大值。(2)当改性粉煤灰用量为30g/L时,磷净化率可达99.53%,磷净化后质量浓度为0.91mg/L,达到《污水综合排放标准》(GB8978—1996)中二级标准限值(1.0mg/L);当改性粉煤灰用量为40g/L时,磷净化率可达99.75%,磷净化后质量浓度为0.48mg/L,达到GB8978—1996中一级标准限值(0.5mg/L)。(3)改性粉煤灰对废水中磷的净化速度较快,吸附5min即可使吸附过程达到平衡;进一步提高吸附时间,磷净化率及净化后浓度几乎不再变化。(4)吸附温度对磷净化率的影响较小,当吸附温度为20~40℃时,磷净化率为97.00%~98.62%。(5)改性粉煤灰对磷的吸附等温线较符合Freundlich方程,且1/n=0.374,吸附过程易进行,改性粉煤灰可作为磷的吸附剂用于废水中磷的净化
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Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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oai:ir.ipe.ac.cn:122111/10601
Last time updated on 09/11/2016
Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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oai:ir.ipe.ac.cn:122111/45019
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Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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oai:ir.ipe.ac.cn:122111/34379
Last time updated on 05/12/2019