生物纳米铁/铈联用过碳酸钠改善污泥脱水性能

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Abstract Bio-Fe/Ce-nanoparticles (Fe/Ce-NPs) prepared from grape-peel-seed extracts, Fe²⁺ and Ce³⁺salts, were combined with sodium percarbonate (SPC) for activated sludge conditioning. Under the optimum conditions (molar ratio of iron to cerium 4:1, Fe/Ce-NPS dosage 30mg/g·TSS, SPC dosage 200mg/g·TSS, pH3 and 30min reaction), the specific resistance to filtration (SRF), Time to filtration (TTF) and water content of mud cake was reduced from 9.74×10¹³m/kg, 92s and 80.5% to 2.67×10¹³m/kg, 42s and 71.2%, respectively. Then, the water content can be further reduced to 65.8% with the combination of polyacrylamide (PAM). When at initial pH 6, the pH value of sludge after conditioning is 7.1 (free from subsequent adjusting pH to neutral), and the conditioned sludge still maintain good dewaterability. During the Fenton-like reaction (Fe/Ce-NPs+SPC), electron transfer between Fe and Ce promoted the production of · OH greatly (0.9 times higher than the traditional Fenton reaction) and reduced the absolute value of Zeta potential drastically (from -17.5mV of raw sludge to -4.6mV after pretreatment). Three-dimensional fluorescence spectrum (3D-EEM) and FTIR characterization showed that Fe/Ce-NPs+SPC oxidation could interrupt the hydrogen bonds maintaining α- Helical and change the conformation of the secondary structure of extracellular protein, causing the looser protein structure, the more bound water in the sludge flocs releasing. Compared with Fenton systems (Fe²⁺/H₂O₂) and (Fe²⁺/SPC), sludge dewaterability could be improved distinctly by Fenton-like system (Fe/Ce-NPs+SPC), especially conditioning sludge at near-neutral pH 6 with great reduction of acid-base dosage. Hence, Fe/Ce-NPs+SPC would be a new eco-friendly, efficient and practical technology for enhancing sludge dewaterability.

Key words： fenton sodium percarbonate EPS sludge dewatering

Received: 13 February 2023

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X703

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	CHEN Yue
	GUO Bo
	XING Hai-shuang
	MENG Jia-qi
	CAO Qun

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CHEN Yue,GUO Bo,XING Hai-shuang等. The improvement of sludge dewaterability by bio-iron/cerium nanoparticles combined with sodium percarbonate[J]. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(9): 4708-4717.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2023/V43/I9/4708

[1]	Cao B D, Zhang W J, Wang D S. Enhanced technology based for sewage sludge deep dewatering:A critical review[J]. Water Research, 2021,189:116650.
[2]	Wu B, Dai X H, Chai X L. Critical review on dewatering of sewage sludge:Influential mechanism, conditioning technologies and implications to sludge re-utilizations[J]. Water Research, 2020, 180:115912.
[3]	董黎明,郑心愿,胡修玉,等.丝状真菌调理对柠檬酸污泥脱水性能的影响[J]. 中国环境科学, 2019,39(6):2467-2474. Dong L M, Zheng X Y, Hu X Y, et al. The effects on citric acid sludge dewatering with filamentous fungi conditioning[J]. China Environmental Science, 2019,39(6):2467-2474.
[4]	Masihi H, Gholikandi G B. Employing electrochemical-fenton process for conditioning and dewatering of anaerobically digested sludge:A novel approach[J]. Water Research, 2018,144:373-382.
[5]	Xiao K K, Pei K Y, Wang H, et al. Citric acid assisted Fenton-like process for enhanced dewaterability of waste activated sludge with in-situ generation of hydrogen peroxide[J]. Water Research, 2018, 140:232-242.
[6]	Liang J L, Zhang L, Yan W W, et al. Mechanistic insights into a novel nitrilotriacetic acid-Fe0 and CaO2 process for efficient anaerobic digestion sludge dewatering at near-neutral pH[J]. Water Research, 2020,184:116149.
[7]	Li Y F, Zhu Y Q, Wang D B, et al. Fe(II) catalyzing sodium percarbonate facilitates the dewaterability of waste activated sludge:Performance, mechanism, and implication[J]. Water Research, 2020,174:115626.
[8]	郭波,田瑜,范晨,等.绿色纳米铁/H2O2联用两性脱水剂调理污泥研究[J]. 中国给水排水, 2020,36(13):62-67. Guo B, Tian Y, Fan C, et al. Sludge conditioning by green iron nanoparticles/H2O2 combined with amphoteric dewatering agent[J]. China Water&Wastewater, 2020,36(13):62-67.
[9]	朱紫琦,李立,徐铭骏,等.菱形片状铁锰催化剂活化过硫酸盐降解四环素[J]. 中国环境科学, 2021,41(11):5142-5152. Zhu Z Q, Li L, Xu M J, et al. Rhombic sheet iron-manganese catalyst-activating peroxymonosulfate for tetracycline degradation[J]. China Environmental Science, 2021,41(11):5142-5152.
[10]	张磊,范晨,郭波.绿色合成纳米铁/铈催化剂联用过氧化氢降解甲氧苄啶的研究[J]. 现代化工, 2022,42(2):157-162. Zhang L, Fan C, Guo B. Degradation of trimethoprim by green synthesized iron/cerium nanoparticles and H2O2[J]. Modern Chemical Industry, 2022,42(2):157-162.
[11]	魏复盛.国家环保总局,水和废水监测分析方法编委会.水和废水监测分析方法[M]. 4版.中国环境科学出版社, 2002. Wei F S. Water and wastewater monitoring and analysis methods[M]. 4th edition. China Environmental Science Press, 2002.
[12]	谢敏,施周,李淑展.污泥脱水性能参数-比阻检测的若干问题研讨[J]. 环境科学与技术, 2006,(3):15-16,42. Xie M, Shi Z, Li S Z. Discussion on several issues of specific resistance to filtration for sludge dewatering performance parameters[J]. Environmental Science & Technology, 2006,(3):15-16,42.
[13]	Hamidreza M, Gagik B G. Using acidic-modified bentonite for anaerobically digested sludge conditioning and dewatering[J]. Chemosphere, 2020,241:125096.
[14]	Chen C T, Zhang T, Li L, et al. Destroying the structure of extracellular polymeric substance to improve the dewatering performance of waste activated sludge by ionic liquid[J]. Water Research, 2021,199:117161.
[15]	A F Gaudy, K C Goel, E T Gaudy. Application of continuous oxidative assimilation and endogenous protein synthesis to the treatment of carbohydrate wastes deficient in nitrogen[J]. Biotechnology and Bioengineering, 1969,11(1):53-65.
[16]	张乃东,郑威,彭永臻.褪色光度法测定芬顿体系中产生的羟自由基[J]. 分析化学, 2003,(5):552-555. Determination of hydroxyl radicals generated in Fenton system by fading spectrophotometry[J]. Chinese Journal of Analytical Chemistry, 2003,(5):552-555.
[17]	Li Y F, Pan L Y, Zhu Y Q, et al. How does zero valent iron activating peroxydisulfate improve the dewatering of anaerobically digested sludge?[J]. Water Research, 2019,163:114912.
[18]	吕晶晶,龚为进,窦艳艳,等. PARAFAC和FRI解析ISI中DOM分布[J]. 中国环境科学, 2019,39(5):2039-2047. The distribution of DOM in aeration pretreatment improved soil infiltration system based on FRI and PARAFAC[J]. China Environmental Science, 2019,39(5):2039-2047.
[19]	Cao B D, Zhang T, Zhang W J, et al. Enhanced technology based for sewage sludge deep dewatering:A critical review[J]. Water Research, 2021,189:116650.
[20]	Li Y F, Wang D, Yang G, et al. In-depth research on percarbonate expediting zero-valent iron corrosion for conditioning anaerobically digested sludge[J]. Journal of hazardous materials, 2021,419:126389.
[21]	Guo, B, Xu T T, Zhang L,et al. A heterogeneous fenton-like system with green iron nanoparticles for the removal of bisphenol A:Performance, kinetics and transformation mechanism[J]. Journal of Environmental Management, 2020,272.
[22]	Chen Y S, Chen H P, Li J, et al. Rapid and efficient activated sludge treatment by electro-Fenton oxidation[J]. Water Research, 2019,152:181-190.
[23]	Wang H F, Wang H J, Hu H, et al. Applying rheological analysis to understand the mechanism of polyacrylamide (PAM) conditioning for sewage sludge dewatering[J]. RSC Advances, 2017,7(48):30274-30282.
[24]	Hu S G, Hu J P, Liu B C, et al. In situ generation of zero valent iron for enhanced hydroxyl radical oxidation in an electrooxidation system for sewage sludge dewatering[J]. Water Research, 2018,145:162-171.
[25]	Zhang Y P, Li T T, Tian J Y, et al. Enhanced dewaterability of waste activated sludge by UV assisted ZVI-PDS oxidation[J]. Journal of Environmental Sciences, 2022,113:152-164.
[26]	Guo Z Y, Ma L P, Dai Q X, et al. Dewatering performance of sewage sludge under pretreatment with modified corn-core powder[J]. Science of The Total Environment, 2019,684:402-412.
[27]	He D Q, Chen J Y, Bao B, et al. Optimizing sludge dewatering with a combined conditioner of Fenton's reagent and cationic surfactant (Article)[J]. Journal of Environmental Sciences (China), 2020,88(2):21-30.
[28]	Liang J L, Zhang L, Zhou Y. Pyrite assisted peroxymonosulfate sludge conditioning:Uncover triclosan transformation during treatment[J]. Journal of hazardous materials, 2021,413:125368.
[29]	徐文迪,何茜,常沙,等.基于Fe3+/EDTA-2Na的类芬顿对剩余污泥脱水性能的影响[J]. 环境科学研究, 2022,35(6):1475-1481. Xu W D, He Q, Chang S, et al. Effect of fenton-like sludge conditioner on waste activated sludge dewatering performance based on Fe3+/EDTA-2Na[J]. Research of Environmental Sciences, 2022, 35(6):1475-1481.
[30]	Wei L L, Xia X H, Zhu F Y, et al. Dewatering efficiency of sewage sludge during Fe2+-activated persulfate oxidation:Effect of hydrophobic/hydrophilic properties of sludge EPS[J]. Water Research, 2020,181:115903.
[31]	Zhu Y W, Xiao K K, Zhou Y, et al. Profiling of amino acids and their interactions with proteinaceous compounds for sewage sludge dewatering by Fenton oxidation treatment[J]. Water Research, 2020, 175:115645.