Technology developments of sewage sludge pyrolysis by microwave

doi:10.16085/j.issn.1000-6613.2015.09.036

Abstract

Abstract: The amount of excess sludge production rapidly increases with fast development of wastewater treatment,resulting in the challenge of sewage sludge treatment and disposal for municipal wastewater treatment plants. This paper reviewed and summarized the recent technology developments on sludge pyrolysis and microwave-assisted pyrolysis,and discussed the critical parameters of the microwave-assisted pyrolysis process and its advantages & disadvantages,including temperature, ramp time of temperature,microwave absorbent,catalyst and carrier gas. It is emphasized that microwave-assisted pyrolysis technology is cost-effective to reduce the pyrolysis reaction time and improve the quality of value-added products. In addition,the future trends of microwave pyrolysis process and key points in sewage sludge treatment were discussed.

Key words: sewage sludge, microwave, pyrolysis, optimization

摘要： 剩余污泥的产量大,处理处置费用高,已成为困扰污水处理厂的难题。在惰性条件下热解剩余污泥生成生物油、生物气以及污泥生物炭等产物,可实现能量和资源的同步回收,应用前景极为广阔。本文总结了目前对于污泥特性、热解温度、升温速率、微波吸收剂、化学添加剂、载气对剩余污泥微波热解的影响的研究,并探讨了污泥热解机制,为微波热解剩余污泥提供了关键技术的参数,利于提高污泥热解效率,优化热解产物品质,为促进污泥微波热解系统化、产业化提供技术支持。同时指出了污泥微波热解受限于微波热解设备,致使其处理投资成本高及处理量小,为污泥微波热解工业化提出了巨大的挑战。最后展望了污泥微波热解的发展趋势及应注重攻克的关键问题。

关键词: 剩余污泥, 微波, 热解, 优化

CLC Number:

X705

GUI Chengmin, LI Ping, WANG Yawei, WEI Yuansong. Technology developments of sewage sludge pyrolysis by microwave[J]. Chemical Industry and Engineering Progree, 2015, 34(09): 3435-3443,3475.

桂成民, 李萍, 王亚炜, 魏源送. 剩余污泥微波热解技术研究进展[J]. 化工进展, 2015, 34(09): 3435-3443,3475.

References

[1] 戴晓虎. 我国城镇污泥处理处置现状及思考[M]. 给水排水,2012,38(2):1-5.

[2] 王建华. 城市污泥处置新技术发展及研究[J]. 中国市政工程,2013(4):41-44.

[3] 国务院办公厅“十二五”全国城镇污水处理及再生利用设施建设规划[J]. 中国环保产业,2012(6):4-13.

[4] 崔筝. 近年来违法倾倒污泥事件盘点[EB/OL]. 财新网. http://special.caixin.com/2013-07-23/100559337.html. 2013-7-23/2014-5-16.

[5] Breulmann M,van Afferden M,Fuehner C. Biochar:Bring on the sewage[J]. Nature,2015,518(7540):483-483.

[6] 罗万江,兰新哲,宋永辉. 油页岩微波热解气态产物析出特性[J]. 化工进展,2015,34(3):689-694.

[7] Macquarrie D J,Clark J H,Fitzpatrick E. The microwave pyrolysis of biomass[J]. Biofuels Bioproducts & Biorefining Biofpr,2012,6(5):549-560.

[8] Lin Q H,Chen G Y,Liu Y K. Scale-up of microwave heating process for the production of bio-oil from sewage sludge[J]. Journal of Analytical and Applied Pyrolysis,2012,94:114-119.

[9] 左薇,田禹. 微波高温热解污水污泥制备生物质燃气[J]. 哈尔滨工业大学学报,2011,43(6):25-28.

[10] Tian Y,Zuo W,Ren Z Y,et al. Estimation of a novel method to produce bio-oil from sewage sludge by microwave pyrolysis with the consideration of efficiency and safety[J]. Bioresource Technology,2011,102(2):2053-2061.

[11] Trung Ngoc T,Jensen P A,Dam-Johansen K,et al. Influence of the pyrolysis temperature on sewage sludge product distribution,bio-oil,and char properties[J]. Energy & Fuels,2013,27(3):1419-1427

[12] Tsai W T,Lee M K,Chang J H,et al. Characterization of bio-oil from induction-heating pyrolysis of food processing sewage sludges using chromatographic analysis[J]. Bioresource Technology,2009,100(9):2650-2654.

[13] Fonts I,Juan A,Gea G,et al. Sewage sludge pyrolysis in fluidized bed,1:Influence of operational conditions on the product distribution[J]. Industrial&Engineering Chemistry Research,2008,47(15):5376-5385.

[14] Lu H,Zhang W,Wang S,et al. Characterization of sewage sludge-derived biochars from different feedstocks and pyrolysis temperatures[J]. Journal of Analytical and Applied Pyrolysis,2013,102:137-143.

[15] Sanchez M E,Lindao E,Margaleff D,et al. Bio-fuels and bio-char production from pyrolysis of sewage sludge[J]. Journal of Residuals Science & Technology,2009,6(1):35-41.

[16] Amari T,Tanaka M,Koga Y,et al. Biomass solid fuel from sewage sludge with pyrolysis and co-firing in coal power plant[C]//Proceedings of the Japan Society of Mechanical Engineers,2006 Symposium on Environmental Engineering,2006:151-153.

[17] Deng W,Wang X,Yu W,et al. Progress in Environmental Science and Engineering,Pts 1-4:Hydrogen-rich gas production from microwave pyrolysis of sewage sludge at high temperature[M]. Xu Q J,Ju Y H,USA,Ge H H. USA,2013:2302-2306.

[18] Dominguez A,Menendez J A,Inguanzo M,et al. Production of bio-fuels by high temperature pyrolysis of sewage sludge using conventional and microwave heating[J]. Bioresource Technology,2006,97(10):1185-1193.

[19] Sanchez M E,Lindao E,Margaleff D,et al. Pyrolysis of agricultural residues from rape and sunflowers:Production and characterization of bio-fuels and biochar soil management[J]. Journal of Analytical and Applied Pyrolysis,2009,85(1-2):142-144.

[20] Khan S,Chao C,Waqas M,et al. Sewage sludge biochar influence upon rice (Oryza sativa L) yield,metal bioaccumulation and greenhouse gas emissions from acidic paddy soil[J]. Environmental Science & Technology,2013,47(15):8624-8632.

[21] Dai Q,Jiang X,Jiang Y,et al. Temperature influence and distribution in three phases of PAHs in wet sewage sludge pyrolysis using conventional and microwave heating[J]. Energy & Fuels,2014,28(5):3317-3325.

[22] Tian Y,Lin F,Huang J. Effect of microwave radiation on immobilization of heavy metals in sediment sludge[J]. Soil & Sediment Contamination,2007,16(6):605-615.

[23] 张辉,胡勤海,吴祖成,等. 城市污泥能源化利用研究进展[J]. 化工进展,2013,32(5):1145-1151.

[24] Yin C G. Microwave-assisted pyrolysis of biomass for liquid biofuels production[J]. Bioresource Technology,2012,120:273-284.

[25] 胡艳军,郑小艳,宁方勇. 污水污泥热解过程的能量平衡与反应热分析[J]. 动力工程学报,2013,33(5):399-404.

[26] 胡艳军,宁方勇. 污水污泥低温热解技术工艺与能量平衡分析[J]. 环境科学与技术,2013,36(4):119-124.

[27] 丁慧. 含油污泥微波热解工艺条件优化现场实验研究[J]. 环境污染与防治,2013,35(4):81-85.

[28] Motasemi F,Afzal M T. A review on the microwave-assisted pyrolysis technique[J]. Renewable and Sustainable Energy Reviews,2013,28:317-330.

[29] Zhang J,Tian Y,Cui Y,et al. Key intermediates in nitrogen transformation during microwave pyrolysis of sewage sludge:A protein model compound study[J]. Bioresource Technology,2013,132:57-63.

[30] Wang Z,Chen D,Song X,et al. Study on the combined sewage sludge pyrolysis and gasification process:Mass and energy balance[J]. Environmental Technology,2012,33(22):2481-2488.

[31] Zielińska A,Oleszczuk P,Charmas B,et al. Effect of sewage sludge properties on the biochar characteristic[J]. Journal of Analytical and Applied Pyrolysis,2015,112:201-213.

[32] Han R,Liu J,Zhang Y,et al. Dewatering and granulation of sewage sludge by biophysical drying and thermo-degradation performance of prepared sludge particles during succedent fast pyrolysis[J]. Bioresource Technology,2012,107:429-436.

[33] Menendez J A,Dominguez A,Inguanzo M,et al. Microwave pyrolysis of sewage sludge:Analysis of the gas fraction[J]. Journal of Analytical and Applied Pyrolysis,2004,71(2):657-667.

[34] Dominguez A,Menedez J A,Inguanzo M,et al. Investigations into the characteristics of oils produced from microwave pyrolysis of sewage sludge[J]. Fuel Processing Technology,2005,86(9):1007-1020.

[35] Zuo W,Tian Y,Ren N Q. The important role of microwave receptors in bio-fuel production by microwave-induced pyrolysis of sewage sludge[J]. Waste Management,2011,31(6):1321-1326.

[36] Lu T,Yuan Hao R,Zhou Shun G,et al. Advances in Environmental Science and Engineering,Pts 1-6:On the Pyrolysis of Sewage Sludge:The Influence of Pyrolysis Temperature on Biochar,Liquid and Gas Fractions[M]. Iranpour R,Zhao J,Wang A,et al. USA,2012:3412-3420.

[37] Agrafioti E,Bouras G,Kalderis D,et al. Biochar production by sewage sludge pyrolysis[J]. Journal of Analytical and Applied Pyrolysis,2013,101:72-78.

[38] Méndez A,Terradillos M,Gascó G. Physicochemical and agronomic properties of biochar from sewage sludge pyrolysed at different temperatures[J]. Journal of Analytical and Applied Pyrolysis,2013,102:124-130.

[39] Chen T,Zhang Y,Wang H,et al. Influence of pyrolysis temperature on characteristics and heavy metal adsorptive performance of biochar derived from municipal sewage sludge[J]. Bioresource Technology,2014,164:47-54.

[40] Mendez A,Gomez A,Paz-Ferreiro J,et al. Effects of sewage sludge biochar on plant metal availability after application to a Mediterranean soil[J]. Chemosphere,2012,89(11):1354-1359.

[41] 管志超,胡艳军,钟英杰. 不同升温速率下城市污水污泥热解特性及动力学研究[J]. 环境污染与防治,2012,34(3):35-39.

[42] Menendez J A,Arenillas A,Fidalgo B,et al. Microwave heating processes involving carbon materials[J]. Fuel Processing Technology,2010,91(1):1-8.

[43] 方琳,赵绪新,田禹,等. 微波循环热解对污泥固态产物特性的影响研究[J]. 环境科学与管理,2009(8):22-24.

[44] Menendez J A,Inguanzo M,Pis J J. Microwave-induced pyrolysis of sewage sludge[J]. Water Research,2002,36(13):3261-3264.

[45] Lillo-Rodenas M A,Ros A,Fuente E,et al. Further insights into the activation process of sewage sludge-based precursors by alkaline hydroxides[J]. Chemical Engineering Journal,2008,142(2):168-174.

[46] Zhang F S,Nriagu J O,Itoh H. Mercury removal from water using activated carbons derived from organic sewage sludge[J]. Water Research,2005,39(2-3):389-395.

[47] Ros A,Lillo-Rodenas M A,Fuente E,et al. High surface area materials prepared from sewage sludge-based precursors[J]. Chemosphere,2006,65(1):132-140.

[48] Sevilla M,Mokaya R. Energy storage applications of activated carbons:Supercapacitors and hydrogen storage[J]. Energy & Environmental Science,2014,7(4):1250-1280.

[49] Jindarom C,Meeyoo V,Rirksomboon T,et al. Production of bio-oil by oxidative pyrolysis of sewage sludge in rotating fixed bed reactor[J]. Asian J. Energy Environ,2006,7(4):401-409.

[50] Zhai Y,Peng W,Zeng G,et al. Pyrolysis characteristics and kinetics of sewage sludge for different sizes and heating rates[J]. Journal of Thermal Analysis and Calorimetry,2012,107(3):1015-1022.

[51] Khiari B,Marias F,Zagrouba F,et al. Analytical study of the pyrolysis process in a wastewater treatment pilot station[J]. Desalination,2004,167(1-3):39-47.

[52] 田禹,赵博研,左薇. 传统热源与微波热源热解污泥特性的TG-FTIR分析[J]. 哈尔滨工业大学学报,2010(6):919-924.

[53] Zhang B,Xiong S,Xiao B,et al. Mechanism of wet sewage sludge pyrolysis in a tubular furnace[J]. International Journal of Hydrogen Energy,2011,36(1):355-363.

[54] Matsuoka K,Shinbori T,Kuramoto K,et al. Mechanism of woody biomass pyrolysis and gasification in a fluidized bed of porous alumina particles[J]. Energy & Fuels,2006,20(3):1315-1320.

[55] Shao J,Yan R,Chen H,et al. Pyrolysis characteristics and kinetics of sewage sludge by thermogravimetry Fourier transform infrared analysis[J]. Energy & Fuels,2008,22(1):38-45.

[56] Mendez A,Tarquis A M,Saa-Requejo A,et al. Influence of pyrolysis temperature on composted sewage sludge biochar priming effect in a loamy soil[J]. Chemosphere,2013,93(4):668-676.

[57] 蔡炳良,辛玲玲. 污泥热解技术特性分析[J]. 中国环保产业,2011(8):51-54.

[58] Zhang J,Tian Y,Zhu J,et al. Characterization of nitrogen transformation during microwave-induced pyrolysis of sewage sludge[J]. Journal of Analytical and Applied Pyrolysis,2014,105:335-341.