ZHUWen-fang,YELei,CHENWan-nian,et al.Effect and Mechanism of Pyrrhotite Promoting the Formation of Aerobic Granular Sludge[J].China Water & Wastewater,2024,40(13):14-20.
磁黄铁矿石促进好氧颗粒污泥形成的效果与机制
- Title:
- Effect and Mechanism of Pyrrhotite Promoting the Formation of Aerobic Granular Sludge
- Keywords:
- aerobic granular sludge; pyrrhotite; extracellular polymeric substances (EPS); interface energy; hydrophobicity
- 摘要:
- 为探究天然磁黄铁矿石对好氧颗粒污泥（AGS）处理染料废水过程中颗粒化进程的影响，在室温条件下运行4个序批式反应器（SBR），通过改变进水有机负荷和碳源，研究了颗粒化过程中AGS的SVI、粒径及Zeta电位的变化，并通过三维荧光光谱（3D-EEM）分析AGS成分以及磁黄铁矿石界面能变化来解析AGS的形成机制。结果表明，投加磁黄铁矿石约20 d就形成了AGS。高有机负荷及采用乙酸钠（NaAc）作为碳源时，SVI平均值由初始的105 mL/g下降到运行末期的（25.99±4.57） mL/g。3D-EEM分析显示，投加磁黄铁矿石能够增加污泥疏水性蛋白质的含量，促进AGS形成。颗粒化过程中，矿石液固界面黏附功逐渐降低，而界面能上升，也促进了AGS的形成。
- Abstract:
- Four sequencing batch reactors (SBRs) were operated at room temperature so as to investigate the effect of natural pyrrhotite on the granulation process of aerobic granular sludge (AGS) in the treatment of dye wastewater. The changes in SVI, particle size, and Zeta potential of AGS during the granulation process were studied by changing the influent organic load and carbon source. The formation mechanism of AGS was analyzed by three-dimensional excitation emission matrix fluorescence spectrophotometer（3D-EEM）of AGS components and variation in the interface energy of pyrrhotite. The results showed that AGS were formed in about 20 days after adding pyrrhotite. When high organic loading rate and sodium acetate (NaAc) carbon source were used , the average SVI value decreased from 105 mL/g at initial operation to (25.99±4.57) mL/g at final run. 3D-EEM analysis revealed that the addition of pyrrhotite could increase the conentration of sludge hydrophobic protein and promote the formation of AGS. In the process of granulation, the adhesion work of the pyrrhotite liquid-solid interface gradually decreased, while the interface energy increased, which also stimulated the formation of AGS.
相似文献/References:
[1]张莹,王昌稳,李军,等.投加微粉强化低浓度生活污水活性污泥好氧颗粒化[J].中国给水排水,2018,34(21):12.
ZHANG Ying,WANG Chang wen,LI Jun,et al.Strengthening Aerobic Granulation of Activated Sludge by Adding Micro Powder in Low Concentration Sewage Treatment[J].China Water & Wastewater,2018,34(13):12.
[2]赵锡锋,李兴强,李军.好氧颗粒污泥技术中试研究及应用进展[J].中国给水排水,2020,36(8):30.
[3]白静,王现丽,李智,等.好氧颗粒污泥处理高浓度有机废水的研究进展[J].中国给水排水,2020,36(8):38.
[4]吴越,赵传峰,孙法文,等.双区沉淀池用于连续流好氧颗粒污泥工艺的可行性[J].中国给水排水,2020,36(19):9.
WU Yue,ZHAO Chuan-feng,SUN Fa-wen,et al.Feasibility of Aerobic Granular Sludge Formation in Continuous Flow Reactor Based on Two-zone Sedimentation Tank[J].China Water & Wastewater,2020,36(13):9.
[5]郝桂珍,范宇成,徐利,等.低温下好氧颗粒污泥强化造粒研究[J].中国给水排水,2020,36(19):32.
HAO Gui-zhen,FAN Yu-cheng,XU Li,et al.Enhanced Granulation of Aerobic Granular Sludge at Low Temperature[J].China Water & Wastewater,2020,36(13):32.
[6]宋欣,孙士权,商光琦,等.氮硫比对好氧颗粒污泥特性影响及其脱氮除硫效果[J].中国给水排水,2021,37(19):91.
SONG Xin,SUN Shi-quan,SHANG Guang-qi,et al.Effect of Nitrogen to Sulfur Ratio on Characteristics of Aerobic Granular Sludge and Its Nitrogen and Sulfur Removal Performance[J].China Water & Wastewater,2021,37(13):91.
[7]王佳璇,李政阳,刘喆,等.高效降解喹啉好氧颗粒污泥的快速形成及性能研究[J].中国给水排水,2022,38(9):8.
WANGJia-xuan,LIZheng-yang,LIUZhe,et al.Rapid Formation and Performance of Aerobic Granular Sludge for Efficient Quinoline Degradation[J].China Water & Wastewater,2022,38(13):8.
[8]吴远远,Mark van Loosdrecht,郝晓地,等.好氧颗粒污泥低温稳定性中试研究[J].中国给水排水,2022,38(11):56.
WUYuan-yuan,Mark van Loosdrecht,HAOXiao-di,et al.A Pilot Study on Stability of Aerobic Granular Sludge at Low Temperature[J].China Water & Wastewater,2022,38(13):56.
[9]张冰,邬莲,黄书昌,等.运行模式及C/N对强化AGS短程硝化反硝化的影响[J].中国给水排水,2023,39(1):9.
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