Optimization of micro-bubble aeration process for magnesium sulfite oxidation in desulphurization wastewater with response surface methodology

Li Tie; Guo Lin; Zhao Jiao; Tang Xiaojia; Zhu Yimin

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Optimization of micro-bubble aeration process for magnesium sulfite oxidation in desulphurization wastewater with response surface methodology

机译：响应面法优化脱硫废水中亚硫酸镁微泡曝气工艺

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In the magnesium-based exhaust gas cleaning system (Mg-EGCS) on board, a large amount of magnesium sulfite is generated in the washing water. In order to reduce the COD and suspended solids (SS), micro-bubbles were produced by using a porous tube in combination with an agitator stirring for the purpose of miniaturization of the bubbles and prolonging the residence time in the water to oxidize the magnesium sulfite to magnesium sulfate. The response surface methodology (RSM) was used to optimize the key parameters of the aeration process. The experimental results showed that 92.1% of the magnesium sulfite in the desulphurization wastewater was oxidized to magnesium sulfate in 54.5 min with pH of 7.5, the stirring speed of 1384 rpm and the aeration pressure of 5.44 bar.

机译：在船上的镁基废气清洁系统（Mg-EGCS）中，洗涤水中会生成大量亚硫酸镁。为了减少化学需氧量和悬浮固体（SS），通过使用多孔管并结合搅拌器来产生微气泡，以使气泡最小化并延长在水中的停留时间以氧化亚硫酸镁。硫酸镁。响应面法（RSM）用于优化曝气过程的关键参数。实验结果表明，脱硫废水中92.1％的亚硫酸镁在54.5分钟内被pH值为7.5，搅拌速度为1384 rpm，充气压力为5.44 bar氧化为硫酸镁。

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来源
《Desalination and water treatment》 |2017年第7期|308-314|共7页
作者
Li Tie; Guo Lin; Zhao Jiao; Tang Xiaojia; Zhu Yimin;
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作者单位

Dalian Maritime Univ, Collaborat Innovat Ctr Vessel Pollut Monitoring &, Dalian 116026, Liaoning, Peoples R China;

Dalian Maritime Univ, Collaborat Innovat Ctr Vessel Pollut Monitoring &, Dalian 116026, Liaoning, Peoples R China;

Dalian Maritime Univ, Collaborat Innovat Ctr Vessel Pollut Monitoring &, Dalian 116026, Liaoning, Peoples R China;

Dalian Maritime Univ, Collaborat Innovat Ctr Vessel Pollut Monitoring &, Dalian 116026, Liaoning, Peoples R China;

Dalian Maritime Univ, Collaborat Innovat Ctr Vessel Pollut Monitoring &, Dalian 116026, Liaoning, Peoples R China;

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正文语种 eng
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关键词
Magnesium-based exhaust gas cleaning system (Mg-EGCS); Magnesium sulfite; Micro-bubbleaeration; Response surface methodology;

机译：镁基废气净化系统（Mg-EGCS）;亚硫酸镁;微泡法;响应面法;

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Optimization of micro-bubble aeration process for magnesium sulfite oxidation in desulphurization wastewater with response surface methodology

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