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微波耦合氯化铁调理对活性污泥脱水性能及热值的影响

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林浚铭, 吴璐超, 柯鹏, 官宝红. 微波耦合氯化铁调理对活性污泥脱水性能及热值的影响[J]. 环境工程学报, 2018, 12(12): 3475-3482. doi: 10.12030/j.cjee.201806086
引用本文: 林浚铭, 吴璐超, 柯鹏, 官宝红. 微波耦合氯化铁调理对活性污泥脱水性能及热值的影响[J]. 环境工程学报, 2018, 12(12): 3475-3482. doi: 10.12030/j.cjee.201806086
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LIN Junming, WU Luchao, KE Peng, GUAN Baohong. Effect of microwave irradiation coupled with ferric chloride conditioning on sludge dewaterability and calorific value[J]. Chinese Journal of Environmental Engineering, 2018, 12(12): 3475-3482. doi: 10.12030/j.cjee.201806086
Citation: LIN Junming, WU Luchao, KE Peng, GUAN Baohong. Effect of microwave irradiation coupled with ferric chloride conditioning on sludge dewaterability and calorific value[J]. Chinese Journal of Environmental Engineering, 2018, 12(12): 3475-3482. doi: 10.12030/j.cjee.201806086
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微波耦合氯化铁调理对活性污泥脱水性能及热值的影响

  • 1.

    浙江大学环境工程系，杭州 310058

  • 基金项目:

    国家重点研发计划项目（2016YFB0301800）

Effect of microwave irradiation coupled with ferric chloride conditioning on sludge dewaterability and calorific value

  • 1.

    Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China

  • Fund Project:

  • 摘要: 为实现活性污泥高效脱水和资源化利用，研究了微波耦合氯化铁调理活性污泥。主要考察微波耦合氯化铁对活性污泥脱水性能和热值的影响。微波辐射能够改善活性污泥的脱水性能，优化参数为功率700 W、时间100 s。微波耦合氯化铁调理进一步增强了活性污泥的脱水性能，先投加氯化铁后微波辐射的调理（氯化铁+微波）效果优于先微波辐射后投加氯化铁的调理（微波+氯化铁）效果，脱水效果的改善得益于活性污泥絮体的增大以及EPS的减少。微波调理后的活性污泥（干基）热值随着微波辐射时间的增长逐渐降低，而微波耦合氯化铁调理后的活性污泥（干基）热值随着氯化铁投加量的增加先增加后减少。
    Abstract: A novel method was performed by conditioning the sludge under microwave irradiation coupled with ferric chloride to achieve efficient dewatering and resource utilization of activated sludge, focusing on the improvement of dewaterability and the evolution of calorific value. The results showed that the sludge dewaterability was improved by microwave irradiation at the optimal conditions of 700 W and 100 s. The microwave irradiation stimulated the growth of sludge flocs, which neutralized the increase of SB-EPS and LB-EPS that deteriorates sludge dewaterability. Moreover, microwave irradiation coupled with ferric chloride conditioning further improved the sludge dewaterability. The conditioning effect by FeCl3 dosing-microwave irradiation was better than that by microwave irradiation-FeCl3 dosing. The increase of sludge flocs and the reduction of EPS resulted from microwave irradiation coupled with ferric chloride (FeCl3) are responsible for the sludge dewaterability improvement. The calorific value of the sludge gradually decreased with the time under microwave irradiation, while it increased first and then decreased with the increase of ferric chloride dosage. The calorific value is negatively correlated with the content of SB-EPS and LB-EPS in the activated sludge.
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  • 刊出日期:  2018-11-29

微波耦合氯化铁调理对活性污泥脱水性能及热值的影响

  • 1. 浙江大学环境工程系，杭州 310058
基金项目:

国家重点研发计划项目（2016YFB0301800）

摘要: 为实现活性污泥高效脱水和资源化利用，研究了微波耦合氯化铁调理活性污泥。主要考察微波耦合氯化铁对活性污泥脱水性能和热值的影响。微波辐射能够改善活性污泥的脱水性能，优化参数为功率700 W、时间100 s。微波耦合氯化铁调理进一步增强了活性污泥的脱水性能，先投加氯化铁后微波辐射的调理（氯化铁+微波）效果优于先微波辐射后投加氯化铁的调理（微波+氯化铁）效果，脱水效果的改善得益于活性污泥絮体的增大以及EPS的减少。微波调理后的活性污泥（干基）热值随着微波辐射时间的增长逐渐降低，而微波耦合氯化铁调理后的活性污泥（干基）热值随着氯化铁投加量的增加先增加后减少。

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