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| Effect of thermal hydrolysis pretreatment on mesophilic anaerobic digestion of excess sludge |
| GUO Si-yu, PENG Yong-zhen, LI Xi-yao, HE Yue-lan, GAO Yao-yuan, LI Lu-kai |
| National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing 100124, China |
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Abstract The waste activated sludge produced by the treatment of actual domestic sewage was subjected to thermal pretreatment at different time (0~100min) at 70℃, and the effects of different pretreatment time and different solid residence times (20d and 30d) were studied by batch test on the anaerobic digestion of waste activated sludge at 35℃. The results showed that after anaerobic digestion, the average removal rate of total chemical oxygen demand was 55.76% under the conditions that SRT was 20d and pretreatment time was 100min.when the pretreatment time was 100min,the average capillary suction time decreased by 26%(20d) and 37%(30d) comparing with the control group. And the average yield of methane was 10.83mL/d under the condition that SRT was 20d and pretreatment time was 60min. Economic analysis showed that the anaerobic digestion of waste activated sludge can reduce the cost of 50.9~499.5yuan/ton dry sludge after 70℃ pretreatment. Therefore, the best SRT was 20d and the best pretreatment time was 60min for the thermal pretreatment.
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Received: 04 November 2016
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| [1] |
Abe N, Tang Y, Iwamura M, et al. Pretreatment followed by anaerobic digestion of secondary sludge for reduction of sewage sludge volume[J]. Water Science and Technology, 2013,67(11):2527-2533.
|
| [2] |
Donosobravo A, Perezelvira S, Aymerich E, et al. Assessment of the influence of thermal pre-treatment time on the macromolecular composition and anaerobic biodegradability of sewage sludge[J]. BioresourceTechnology, 2011,102(2):660-666.
|
| [3] |
Tiehm A, Nickel K, Zellhorn M, et al. Ultrasonic waste activated sludge disintegration for improving anaerobic stabilization[J]. Water Research, 2001,35(8):2003-2009.
|
| [4] |
林云琴,王德汉,吴少全,等.预处理对造纸污泥厌氧消化产甲烷性能的影响研究[J]. 中国环境科学, 2010,30(5):650-657.
|
| [5] |
徐慧敏,何国富,戴晓虎,等.超声联合低温热水解促进剩余污泥破解和厌氧消化的研究[J]. 中国环境科学, 2016,36(9):2703-2708.
|
| [6] |
Mueller J A. Prospects and problems of sludge pre-treatment processes[J]. Water Science and Technology, 2001,44(10):121-128.
|
| [7] |
刘金凤,盛广宏,王诗生.水热处理对污泥性质的影响[J]. 环境污染与防治, 2013,35(11):71-76.
|
| [8] |
荀锐,王伟,乔玮.水热改性污泥的水分布特征与脱水性能研究[J]. 环境科学, 2009,30(3):851-856.
|
| [9] |
王治军,王伟,李芬芳.污泥热水解技术的发展及应用[J]. 中国给水排水, 2003,19(10):25-27.
|
| [10] |
Duan N, Dong B, Wu B, et al. High-solid anaerobic digestion of sewage sludge under mesophilic conditions:Feasibility study[J]. Bioresource Technology, 2012,104:150-156.
|
| [11] |
Neyens E, Baeyens J. A review of thermal sludge pre-treatment processes to improve dewaterability[J]. Journal Of Hazardous Materials, 2003,98(3):51-67.
|
| [12] |
Appels L, Degreve J, Van der Bruggen B, et al. Influence of low temperature thermal pre-treatment on sludge solubilisation, heavy metal release and anaerobic digestion[J]. Bioresource Technology, 2010,101(15):5743-5748.
|
| [13] |
Liao X, Li H, Zhang Y, et al. Accelerated high-solids anaerobic digestion of sewage sludge using low-temperature thermal pretreatment[J]. International Biodeterioration & Biodegradation, 2016,106:141-149.
|
| [14] |
Ferrer I, Ponsa S, Vazquez F, et al. Increasing biogas production by thermal (70℃) sludge pre-treatment prior to thermophilic anaerobic digestion[J]. Biochemical Engineering Journal, 2008, 42(2):186-192.
|
| [15] |
Zupancic G D, Ros M. Heat and energy requirements in thermophilic anaerobic sludge digestion[J]. Renewable Energy, 2003,28(14):2255-2267.
|
| [16] |
Dhar B R, Nakhla G, Ray M B. Techno-economic evaluation of ultrasound and thermal pretreatments for enhanced anaerobic digestion of municipal waste activated sludge[J]. Waste Management, 2012,32(3):542-549.
|
| [17] |
Elbeshbishy E, Nakevski A, Hafez H, et al. Simulation of the impact of SRT on anaerobic digestability of ultrasonicated hog manure[J]. Energies, 2010,3(5):974-988.
|
| [18] |
王治军,王伟.剩余污泥的热水解试验[J]. 中国环境科学, 2005,25(S1):56-60.
|
| [19] |
Valo A, Carrere H, Delgenes J P. Thermal, chemical and thermo-chemical pre-treatment of waste activated sludge for anaerobic digestion[J]. Journal of Chemical Technology and Biotechnology, 2004,79(11):1197-1203.
|
| [20] |
袁悦,彭永臻,金宝丹,等.氢氧化镁对剩余污泥碱性发酵及脱水性能的影响[J]. 中国环境科学, 2014,34(7):1790-1796.
|
| [21] |
李方,杨波,田晴,等.水解酸化应用于剩余污泥减量的试验研究[J]. 环境工程学报, 2008,2(9):1247-1250.
|
| [22] |
Appels L, Baeyens J, Degreve 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.
|
| [23] |
Xue Y, Liu H, Chen S, et al. Effects of thermal hydrolysis on organic matter solubilization and anaerobic digestion of high solid sludge[J]. Chemical Engineering Journal, 2015,264:174-180.
|
| [24] |
Vlyssides A G, Karlis P K. Thermal-alkaline solubilization of waste activated sludge as a pre-treatment stage for anaerobic digestion[J]. BioresourceTechnology, 2004,91(2):201-206.
|
| [25] |
Odegaard H. Sludge minimization technologies-an overview[J]. Water Science and Technology, 2004,49(10):31-40.
|
|
|
|
