EFFECT OF MEDIUM AND HIGH MOLECULAR WEIGHT POLYACRYLAMIDE ON PERFORMANCE OF SLUDGE ANAEROBIC DIGESTION

WANG Xu-dong; LI Xian-guo; ZHANG Hai-qing; PAN Kang-hong; ZHANG Da-hai

doi:10.13205/j.hjgc.202205012

Volume 40 Issue 5

Jul. 2022

Turn off MathJax

Article Contents

Article Navigation > ENVIRONMENTAL ENGINEERING > 2022 > 40(5): 82-87

WANG Xu-dong, LI Xian-guo, ZHANG Hai-qing, PAN Kang-hong, ZHANG Da-hai. EFFECT OF MEDIUM AND HIGH MOLECULAR WEIGHT POLYACRYLAMIDE ON PERFORMANCE OF SLUDGE ANAEROBIC DIGESTION[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(5): 82-87. doi: 10.13205/j.hjgc.202205012

Citation:

WANG Xu-dong, LI Xian-guo, ZHANG Hai-qing, PAN Kang-hong, ZHANG Da-hai. EFFECT OF MEDIUM AND HIGH MOLECULAR WEIGHT POLYACRYLAMIDE ON PERFORMANCE OF SLUDGE ANAEROBIC DIGESTION[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(5): 82-87. doi: 10.13205/j.hjgc.202205012

Citation:

WANG Xu-dong, LI Xian-guo, ZHANG Hai-qing, PAN Kang-hong, ZHANG Da-hai. EFFECT OF MEDIUM AND HIGH MOLECULAR WEIGHT POLYACRYLAMIDE ON PERFORMANCE OF SLUDGE ANAEROBIC DIGESTION[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(5): 82-87. doi: 10.13205/j.hjgc.202205012

PDF( 1473 KB)

EFFECT OF MEDIUM AND HIGH MOLECULAR WEIGHT POLYACRYLAMIDE ON PERFORMANCE OF SLUDGE ANAEROBIC DIGESTION

doi: 10.13205/j.hjgc.202205012

College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China

Received Date: 2021-08-25
Available Online: 2022-07-02

Abstract

Abstract

Dehydration and successive anaerobic digestion are widely used for the reduction and resource utilization of the excess sludge from municipal wastewater treatment plants. Cationic polyacrylamide(cPAM) is a commonly used flocculant in the dehydration process, and its influence on the performance of subsequent anaerobic digestion is still not well understood. This study found that cPAM with medium and high molecular weight could inhibit the solubilization and hydrolysis of organic matter, and the efficiency of the subsequent acidogenesis and methanogenesis during anaerobic digestion. In addition, the inhibition effect of medium molecular weight cPAM was stronger. Compared with the control, the maximum yields of soluble protein, polysaccharide, and short-chain fatty acids(SCFAs) decreased by 22.3%, 28.4% and 38.6%, respectively, for the digestion of sludge after the addition of medium molecular weight cPAM; while they declined by 7.4%, 19.4% and 25.9% respectively for high molecular weight cPAM. The 30-day cumulative methane production for sludge digestion with medium and high molecular weight cPAM were(40.4±1.4) mL CH₄/g VSS and(49.8±1.3) mL CH₄/g VSS, respectively, which were 33.7% and 18.3% lower than that of the control. The results suggested that the effect of cPAM, including the amount and molecular weight of cPAM, on the performance of subsequent anaerobic digestion should be integrated into consideration in the process of excess sludge dewatering to achieve the best overall benefit.
- excess sludge,
- anaerobic digestion,
- methanogenesis,
- medium & high molecular,
- polyacrylamide

FullText(HTML)

References(30)

References

[1]	戴晓虎.我国污泥处理处置现状及发展趋势[J].科学,2020,72(6):30-34.
[2]	APPELS L,BAEYENS J,DEGRÈVE J,et al.Principles and potential of the anaerobic digestion of waste-activated sludge[J].Progress in Energy and Combustion Science,2008,34(6):755-781.
[3]	熊焕嘉,刘峙嵘.絮凝剂的开发及其应用进展[J].油气田环境保护,2011,21(2):30-33.
[4]	施正华,李秀芬,宋小莉,等.采用阳离子聚丙烯酰胺改善污泥水解液的脱水性能[J].2017,11(10):5615-5620.
[5]	CHU C P,LEE D J,CHANG BEA-VEN,et al. "Weak" ultrasonic pre-treatment on anaerobic digestion of flocculated activated biosolids[J].Water Research,2002,36(11):2681-2688.
[6]	何旭,俞志敏,卫新来.聚丙烯酰胺对生活污泥脱水的实验研究[J].环境科学导刊,2015,34(1):61-66.
[7]	WANG D B,LIU X R,ZENG G M,et al.Understanding the impact of cationic polyacrylamide on anaerobic digestion of waste activated sludge[J].Water Research,2018,130(Mar.1):281-290.
[8]	刘建平,王雪芳,杨小敏.高分子量聚丙烯酰胺的合成与应用进展[J].化学工程师,2010(8):26-28.
[9]	FEDERATION W E,APH A.Standard methods for the examination of water and wastewater[J].American Public Health Association:Washington,DC,USA,2005.
[10]	LIU H B,WANG Y Y,WANG L,et al.Stepwise hydrolysis to improve carbon releasing efficiency from sludge[J].Water Research,2017,119:225-233.
[11]	ZHAO J W,WANG D B,LI X M,et al.Free nitrous acid serving as a pretreatment method for alkaline fermentation to enhance short-chain fatty acid production from waste activated sludge[J].Water Research,2015,78:111-120.
[12]	ELEFSINIOTIS P,OLDHAM W.Effect of HRT on acidogenic digestion of primary sludge[J].Journal of Environmental Engineering,1994,120(3):645-660.
[13]	LIU Y D,ZHU Y D,JIA H H,et al.Effects of different biofilm carriers on biogas production during anaerobic digestion of corn straw[J].Bioresource Technology,2017,244(Pt 1):445-451.
[14]	YUAN Y Y,HU X Y,CHEN H B,et al.Advances in enhanced volatile fatty acid production from anaerobic fermentation of waste activated sludge[J].Science of the Total Environment,2019,694:133741.
[15]	卢怡清,许颖,董滨,等.去除城市生活污泥中有机络合态金属强化其厌氧生物制气[J].环境科学,2018,39(1):284-291.
[16]	LU K X,PING Q,LI Y M.Understanding the abiotic interaction between phosphate and macromolecular organic compounds in waste activated sludge during anaerobic treatment[J].Science of the Total Environment,2021,782:146864.
[17]	BASUVARAJ M,FEIN J,LISS S N.Protein and polysaccharide content of tightly and loosely bound extracellular polymeric substances and the development of a granular activated sludge floc[J].Water Research,2015,82:104-117.
[18]	LIANG J L,LUO L W,LI D Y,et al.Promoting anaerobic co-digestion of sewage sludge and food waste with different types of conductive materials:performance,stability,and underlying mechanism[J].Bioresource Technology,2021,337:125384.
[19]	GIANFREDA L,RAO M A.Potential of extra cellular enzymes in remediation of polluted soils:a review[J].Enzyme and Microbial Technology,2004,35(4):339-354.
[20]	LUO Y L,YANG Z H,XU Z Y,et al.Effect of trace amounts of polyacrylamide (PAM) on long-term performance of activated sludge[J].Journal of Hazardous Materials,2011,189(1/2):69-75.
[21]	CHU C P,LEE D J,CHANG B V,et al.Anaerobic digestion of polyelectrolyte flocculated waste activated sludge[J].Chemosphere,2003,53(7):757-764.
[22]	XIONG B Y,LOSS R D,SHIELDS D,et al.Polyacrylamide degradation and its implications in environmental systems[J].npj Clean Water,2018,1(1):17-19.
[23]	DAI X H,LUO F,YI J,et al.Biodegradation of polyacrylamide by anaerobic digestion under mesophilic condition and its performance in actual dewatered sludge system[J].Bioresource Technology,2014,153:55-61.
[24]	DAI X H,XU Y,DONG B.Effect of the micron-sized silica particles (MSSP) on biogas conversion of sewage sludge[J].Water Research,2017,115:220-228.
[25]	GUO H X,WANG Y F,TIAN L X,et al.Insight into the enhancing short-chain fatty acids (SCFAs) production from waste activated sludge via polyoxometalates pretreatment:mechanisms and implications[J].Science of the Total Environment,2021,800:149392.
[26]	PANG H L,LI L L,HE J G,et al.New insight into enhanced production of short-chain fatty acids from waste activated sludge by cation exchange resin-induced hydrolysis[J].Chemical Engineering Journal,2020,388:124235.
[27]	LIU X R,XU Q X,WANG D B,et al.Unveiling the mechanisms of how cationic polyacrylamide affects short-chain fatty acids accumulation during long-term anaerobic fermentation of waste activated sludge[J].Water Research,2019,155:142-151.
[28]	WU Y Q,SONG K.Effect of thermal activated peroxydisulfate pretreatment on short-chain fatty acids production from waste activated sludge anaerobic fermentation[J].Bioresource Technology,2019,292:121977.
[29]	ZHAO J W,GUI L,WANG Q L,et al.Aged refuse enhances anaerobic digestion of waste activated sludge[J].Water Research,2017,123:724-733.
[30]	KHADEM A F,AZMAN S,PLUGGE C M,et al.Effect of humic acids on the activity of pure and mixed methanogenic cultures[J].Biomass and Bioenergy,2017,99:21-30.