WANGJian,CHENHairong,YANGShuwei,et al.Enhancement of Phosphorus Removal and Iron Form Conversion in SBR Process Using Sponge Iron/Activated Carbon[J].China Water & Wastewater,2026,42(5):10-17.
海绵铁/活性炭强化SBR工艺除磷及铁形态转化规律
- Title:
- Enhancement of Phosphorus Removal and Iron Form Conversion in SBR Process Using Sponge Iron/Activated Carbon
- Keywords:
- SBR; activated carbon; sponge iron; biological phosphorus removal; iron morphology; extracellular polymeric substances (EPS)
- 摘要:
- 为提高SBR工艺的除磷效率，利用海绵铁的还原性与活性炭的吸附性，系统考察了海绵铁与活性炭的质量比（Fe/C）对除磷效果的影响。当Fe/C由1∶1降至1∶5时，Zeta电位由-25.05 mV提高到-20.37 mV，酸性磷酸酶活性由0.33 mg/（L·h）提高到 0.48 mg/（L·h），污泥絮凝性和生物活性得到改善，总磷去除率由84.4%提高至94.9%，通过活性炭物理吸附、海绵铁引发的化学沉淀及增强的聚磷菌活性共同完成系统除磷。然而，当Fe/C进一步降至1∶7时，总磷去除率降至82.3%，Zeta电位降低，SV30上升，过量的活性炭抑制了聚磷菌活性，并减弱污泥絮体稳定性。在SBR反应器运行过程中，SMP、LB、TB层的关键组分保持稳定，始终以氨基酸和类蛋白物质为主；铁在体系中的主要形态为有机质及硫化物结合态，其转化路径不受Fe/C影响。
- Abstract:
- To improve phosphorus removal efficiency in SBR process, the influence of sponge iron/activated carbon mass ratios (Fe/C) on phosphorus removal were systematically investigated by utilizing the reducibility of sponge iron and the adsorption capacity of activated carbon. When Fe/C decreased from 1∶1 to 1∶5, the Zeta potential rose from -25.05 mV to -20.37 mV, acid phosphatase activity enhanced from 0.33 mg/(L·h) to 0.48 mg/(L·h),and the sludge flocculation and biological activity were improved.Removal efficiency of the total phosphorus (TP) increased from 84.4% to 94.9%, and phosphorus removal in the system was achieved through the physical adsorption of activated carbon, chemical precipitation induced by sponge iron, and the enhancement of polyphosphate accumulating bacteria activity. However, when the Fe/C was further decreased to 1∶7, TP removal efficiency dropped to 82.3%, Zeta potential decreased and the SV30 climbed, respectively. Excessive activated carbon inhibited the activity of polyphosphate accumulating bacteria and weakened the stability of sludge flocs. During the operation of the SBR reactor, the key components of the SMP, LB and TB layers remained stable and were always dominated by amino acids and protein-like organic substances. The main form of Fe in the system was organic matter and sulfide bound state, and its transformation pathways was not affected by the Fe/C.
相似文献/References:
[1]龚本洲,周炯,刘石虎,等.C/N值对短时曝气SBR高标准脱氮除磷效能的影响[J].中国给水排水,2020,36(15):13.
LIU Shi-hu,WANG Jia-le,ZHOU Jian.Effect of C/N Ratio on High-standard Nitrogen and Phosphorus Removal Efficiency of SBR with Short-time Aeration[J].China Water & Wastewater,2020,36(5):13.
[2]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(5):32.
[3]黄子洪,向婷,方华,等.分步进水SBR工艺生物脱氮运行条件优化及数学模拟[J].中国给水排水,2020,36(23):89.
HUANG Zi-hong,XIANG Ting,FANG Hua,et al.Operational Condition Optimization and Mathematical Simulation of Biological Denitrification in Step-feed SBR Process[J].China Water & Wastewater,2020,36(5):89.
[4]侯琮语,李佳宾,付宛宜,等.臭氧/陶瓷膜-活性炭组合工艺处理农村饮用水中试[J].中国给水排水,2022,38(8):38.
HOUCong-yu,LIJia-bin,FUWan-yi,et al.A Combined Ozone/Ceramic Membrane and Activated Carbon Process for Rural Drinking Water Treatment: A Pilot Study[J].China Water & Wastewater,2022,38(5):38.
[5]胡邦,杨艳坤,张鑫,等.化工园区工业污水“分类分质”处理工艺系统设计[J].中国给水排水,2023,39(6):66.
HUBang,YANGYan-kun,ZHANGXin,et al.Design of Industrial Wastewater Treatment System in Chemical Industrial Park Based on Classification and Quality[J].China Water & Wastewater,2023,39(5):66.
[6]赫俊国,曾忆雯,刘新平,等.NZVI/AC基好氧颗粒污泥快速培养及污水处理效能[J].中国给水排水,2023,39(7):8.
HEJun-guo,ZENGYi-wen,LIUXin-ping,et al.Rapid Cultivation of NZVI/AC-based Aerobic Granular Sludge and Its Wastewater Treatment Performance[J].China Water & Wastewater,2023,39(5):8.
[7]李旭枫,周瑶,常晶,等.预处理及深度处理技术强化天津某水厂净水工艺[J].中国给水排水,2024,40(3):46.
LIXu-feng,ZHOUYao,CHANGJing,et al.Enhanced Purification Process of a Waterworks in Tianjin by Pretreatment and Advanced Treatment Technology[J].China Water & Wastewater,2024,40(5):46.
[8]朱薇,张晶,游宏坤,等.污泥-煤矸石基活性炭的制备及对Anammox的促进[J].中国给水排水,2024,40(7):113.
ZHUWei,ZHANGJing,YOUHong-kun,et al.Preparation of Sludge and Coal Gangue Based Activated Carbon and Its Promotion to Anammox[J].China Water & Wastewater,2024,40(5):113.
[9]胡光明,朱乐辉.含苯酚油墨废水处理工程实例[J].中国给水排水,2024,40(14):126.
HUGuang-ming,ZHULe-hui.Phenol-containing Printing Ink Wastewater Treatment Project Case[J].China Water & Wastewater,2024,40(5):126.