PROMOTING DEWATERABILITY OF WASTE ACTIVATED SLUDGE BY ACTIVATED CARBON ACTIVATED PERSULFATE OXIDATION

TAN Yujie; CHEN Yayi; ZHOU Binjie; LU Xueqin; ZHEN Guangyin; HU Weijie

doi:10.13205/j.hjgc.202405009

Volume 42 Issue 5

May 2024

Turn off MathJax

Article Contents

Article Navigation > ENVIRONMENTAL ENGINEERING > 2024 > 42(5): 70-74

TAN Yujie, CHEN Yayi, ZHOU Binjie, LU Xueqin, ZHEN Guangyin, HU Weijie. PROMOTING DEWATERABILITY OF WASTE ACTIVATED SLUDGE BY ACTIVATED CARBON ACTIVATED PERSULFATE OXIDATION[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(5): 70-74. doi: 10.13205/j.hjgc.202405009

Citation:

TAN Yujie, CHEN Yayi, ZHOU Binjie, LU Xueqin, ZHEN Guangyin, HU Weijie. PROMOTING DEWATERABILITY OF WASTE ACTIVATED SLUDGE BY ACTIVATED CARBON ACTIVATED PERSULFATE OXIDATION[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(5): 70-74. doi: 10.13205/j.hjgc.202405009

Citation:

TAN Yujie, CHEN Yayi, ZHOU Binjie, LU Xueqin, ZHEN Guangyin, HU Weijie. PROMOTING DEWATERABILITY OF WASTE ACTIVATED SLUDGE BY ACTIVATED CARBON ACTIVATED PERSULFATE OXIDATION[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(5): 70-74. doi: 10.13205/j.hjgc.202405009

PDF( 5832 KB)

PROMOTING DEWATERABILITY OF WASTE ACTIVATED SLUDGE BY ACTIVATED CARBON ACTIVATED PERSULFATE OXIDATION

doi: 10.13205/j.hjgc.202405009

1. Shanghai Waterway Engineering Design and Consulting Co., Ltd., Shanghai 200120, China;
2. Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China;
3. The 3rd Design Institute, Shanghai Municipal Engineering Design Institute (Group) Co., Ltd., Shanghai 200092, China

Received Date: 2023-10-26
Available Online: 2024-07-11

Abstract

Abstract

Waste-activated carbon and K₂S₂O₈ were used to pretreat sludge, and different proportions of activated carbon and K₂S₂O₈ could destroy the sludge structure and enhance the sludge dewatering performance. When 1.00 g/g VS activated carbon and 1.60 mmol/g VS S₂O₈^2- were added into the sludge, the sludge was filtered for 60, 120, 180, 240, 300 s after reaction for 20 min. The water loss was (4.95±0.05), (6.65±0.15), (7.45±0.05), (7.90±0.10), (7.90±0.01) g, respectively. Compared with the original sludge, the water loss at the same time increased by 32.00%, 20.91%, 19.20%, 17.04%, and 16.18%, respectively. The moisture content of the sludge cake was (62.63±1.09)%, which was 19.97% lower than that of the original sludge cake. These results showed that activated carbon and K₂S₂O₈ can greatly improve the sludge dewatering performance, accelerate the sludge dewatering rate, and reduce the moisture content of the mud cake. In industrial applications, activated carbon and K₂S₂O₈ have the advantage of low cost. When used for sludge dewatering, they can reduce sludge pretreatment costs, and an efficient sludge treatment effect can reduce sludge comprehensive treatment and subsequent disposal costs.
- sludge dewatering,
- activated carbon,
- persulfate,
- moisture content

FullText(HTML)

References(12)

References

[1]	ZHEN G Y, LU X Q, SU L H, et al. Unraveling the catalyzing behaviors of different iron species (Fe²⁺ vs. Fe⁰) in activating persulfate-based oxidation process with implications to waste activated sludge dewaterability[J]. Water Research,2018,134:101-114.
[2]	ZHEN G Y, LU X Q, ZHAO Y C, et al. Enhanced dewaterability of sewage sludge in the presence of Fe(Ⅱ)-activated persulfate oxidation[J]. Bioresource Technology,2012,116: 259-265.
[3]	LIU H, FANG H. Extraction of extracellular polymeric substances (EPS) of sludges[J]. Journal of Biotechnology,2002,95: 249-256.
[4]	NEYENS E, BAEYENS J, DEWIL R, et al. Advanced sludge treatment affects extracellular polymeric substances to improve activated sludge dewatering[J]. Journal of Hazardous Materials,2004,106:83-92.
[5]	YUAN H P, YAN X F, YANG C F, et al. Enhancement of waste activated sludge dewaterability by electro-chemical pretreatment[J]. Journal of Hazardous Materials,2011,187(1/2/3): 82-88.
[6]	MURUGESAN K, RAVINDRAN B, SELVAM A, et al. Enhanced dewaterability of anaerobically digested sewage sludge using Acidithiobacillus ferrooxidans culture as sludge conditioner[J]. Bioresource Technology,2014,169: 374-379.
[7]	WANG L P, LI A M, CHANG Y Z. Relationship between enhanced dewaterability and structural properties of hydrothermal sludge after hydrothermal treatment of excess sludge[J]. Water Research,2017,112: 72-82.
[8]	ZHEN G Y, LU X Q, WANG B Y, et al. Enhanced dewatering characteristics of waste activated sludge with Fenton pretreatment: effectiveness and statistical optimization[J].Frontiers of Environmental Science & Engineering,2014,8(2): 267-276.
[9]	ZHEN G Y, LU X Q, WANG B Y, et al. Synergetic pretreatment of waste activated sludge by Fe(Ⅱ)-activated persulfate oxidation under mild temperature for enhanced dewaterability[J].Bioresource Technology,2012,124: 29-36.
[10]	OH S Y, KANG S G, KIM D W, et al. Degradation of 2,4-dinitrotoluene by persulfate activated with iron sulfides[J]. Chemical Engineering Journal,2011,172(2/3):641-646.
[11]	WANG J H, TAN Y J, PAN Y, et al. Altering extracellular biopolymers and water distribution of waste activated sludge by Fe(Ⅱ) persulfate oxidation with natural zeolite and polyelectrolyte as skeleton builders for positive feedbacks to dewaterability[J]. ACS Sustainable Chemistry & Engineering,2019,7:16549-16559.
[12]	LIU H, YANG J K, ZHU N R, et al. A comprehensive insight into the combined effects of Fenton’s reagent and skeleton builders on sludge deep dewatering performance[J]. Journal of Hazardous Materials, 2013,258/259: 144-150.