Effects of high temperature thermal hydrolysis process on changes of phosphorus forms in high-solid sewage sludge
ZHOU Si-qi, DAI Xiao-hu, DAI Ling-ling, PENG Xing-zi, LIU Zhi-gang
State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
Orthogonal experiment, single factor experiment (i.e. temperature), and standards, measurements, and testing (SMT) were used to explore changes of phosphorus forms in high-solid sewage sludge after high temperature thermal hydrolysis process (HTTHP). The experimental results showed that more than 14.80% of organic phosphorus (OP) was transformed into inorganic phosphorus (IP) in high-solid sewage sludge by the HTTHP at 120℃~160℃, and the order of influencing factors on IP/total phosphorus (TP) was as follows:temperature of HTTHP > time of HTTHP > oxidant content > pH. With the increase of temperature, IP/TP in high-solid sewage sludge increased from 79.13% to 95.87%. Further study indicated that under 160℃ and 40min of HTTHP conditions, the IP and the IP/TP increased respectively from 18.30mg/g to 20.49mg/g and 80.83% to 96.97%. These findings, however, established foundation to realize the phosphorus recovery, and also provided an important reference for the optimization of high-solid anaerobic digestion of sewage sludge with HTTHP pretreatment.
周思琦, 戴晓虎, 戴翎翎, 彭信子, 刘志刚. 高温热水解对高含固污泥中磷的形态转化影响[J]. 中国环境科学, 2018, 38(4): 1391-1396.
ZHOU Si-qi, DAI Xiao-hu, DAI Ling-ling, PENG Xing-zi, LIU Zhi-gang. Effects of high temperature thermal hydrolysis process on changes of phosphorus forms in high-solid sewage sludge. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(4): 1391-1396.
Asimov I. Life's bottleneck[J]. The Magazine of Fantasy and Science Fiction, 1959,16(4):31-40.
[3]
Fischer F, Bastian C, Happe M, et al. Microbial fuel cell enables phosphate recovery from digested sewage sludge as struvite[J]. Bioresource Technology, 2011,102(10):5824-5830.
[4]
Lin Y M, Liu Y, Tay J H. Development and characteristics of phosphorus-accumulating microbial granules in sequencing batch reactors[J]. Applied Microbiology and Biotechnology, 2003,62(4):430-435.
[5]
Berg U, Donnert D, Weidler P G, et al. Phosphate elimination and recovery from wastewater by active filtration using crushed gas concrete[J]. Environmental Technology, 2005,26(2):219-229.
Liu C, Zeng P, Song Y H, et al. Phosphorus Releasing from Surplus Activated Sludge by Ultrasonic Pretreatment[J]. Advanced Materials Research, 2014,878:702-707.
[14]
Qian T, Jiang H. Migration of Phosphorus in Sewage Sludge during Different Thermal Treatment Processes[J]. Acs Sustainable Chemistry and Engineering, 2014,2(6):1411-1419.
[15]
Kuroda A, Takiguchi N, Gotanda T, et al. A simple method to release polyphosphate from activated sludge for phosphorus reuse and recycling[J]. Biotechnology and Bioengineering, 2002,78(3):333-338.
[16]
Anjum M, Al-Makishah N H, Barakat M A. Wastewater sludge stabilization using pre-treatment methods[J]. Process Safety and Environmental Protection, 2016,102:615-632.
Climent M, Ferrer I, Del Mar Baeza M, et al. Effects of thermal and mechanical pretreatments of secondary sludge on biogas production under thermophilic conditions[J]. Chemical Engineering Journal, 2007,133(1-3):335-342.
[20]
Gavala H N, Yenal U, Skiadas I V, et al. Mesophilic and thermophilic anaerobic digestion of primary and secondary sludge. Effect of pre-treatment at elevated temperature[J]. Water Research, 2003,37(19):4561-4572.
Ahmad A A, Idris A. Release and recovery of phosphorus from wastewater treatment sludge via struvite precipitation[J]. Desalination and Water Treatment, 2014,52(28-30):5696-5703.
[23]
Serrano A, Siles J A, Carmen Gutierrez M, et al. Improvement of the biomethanization of sewage sludge by thermal pre-treatment and co-digestion with strawberry extrudate[J]. Journal of Cleaner Production, 2015,90:25-33.
Federation W E A A. Standard methods for the examination of water and wastewater[S].
[27]
Ruban V, Lopez-Sanchez J F, Pardo P, et al. Selection and evaluation of sequential extraction procedures for the determination of phosphorus forms in lake sediment[J]. Journal of Environmental Monitoring, 1999,1(1):51-56.
[28]
Medeiros J, Cid B P, Gomez E F. Analytical phosphorus fractionation in sewage sludge and sediment samples[J]. Analytical and Bioanalytical Chemistry, 2005,381(4):873-878.
[29]
Feng G, Guo Y, Tan W. Effects of thermal hydrolysis temperature on physical characteristics of municipal sludge[J]. Water Science and Technology A Journal of the International Association on Water Pollution Research, 2015,72(11):2018-2026.
[30]
Morgansagastume F, Pratt S, Karlsson A, et al. Production of volatile fatty acids by fermentation of waste activated sludge pre-treated in full-scale thermal hydrolysis plants[J]. Bioresource Technology, 2011,102(3):3089-3097.
[31]
Ingall E D, Schroeder P A, Berner R A. The nature of organic phosphorus in marine sediments:new insights from 31P-NMR[J]. Geochimica Et Cosmochimica Acta, 1990,54(9):2617-2620.
[32]
Mckelvie I D, Turner B L, Frossard E, et al. Organic phosphorus in the environment[M]. New York:CABI, 2005:1-20.
Pilli S, Yan S, Tyagi R D, et al. Thermal Pretreatment of Sewage Sludge to Enhance Anaerobic Digestion:A Review[J]. Critical Reviews in Environmental Science and Technology, 2015,45(6):669-702.
Bougrier C, Delgenes J P, Carrere H. Effects of thermal treatments on five different waste activated sludge samples solubilisation, physical properties and anaerobic digestion[J]. Chemical Engineering Journal, 2008,139(2):236-244.
