پیوندهای مفید
آمار
| تعداد نشریات | 8 |
| تعداد شمارهها | 438 |
| تعداد مقالات | 5,650 |
| تعداد مشاهده مقاله | 7,683,255 |
| تعداد دریافت فایل اصل مقاله | 6,339,731 |
بررسی کارایی سیستم دیسکهای زیستی چرخان در تصفیه فاضلاب خانگی | ||
| نشریه مهندسی عمران امیرکبیر | ||
| دوره 54، شماره 3، خرداد 1401، صفحه 1165-1174 اصل مقاله (1.43 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22060/ceej.2021.19294.7128 | ||
| نویسندگان | ||
| محمدحسین ربیعی گسک؛ محمدرضا دوستی* ؛ محمدجواد ذوقی | ||
| دانشکده مهندسی، دانشگاه بیرجند، بیرجند، ایران. | ||
| چکیده | ||
| با توجه به بحران کمبود آب، اهمیت تصفیه فاضلاب و استفاده مجدد از فاضلاب، امروزه کاربرد روشهای پیشرفته تصفیه فاضلاب مورد توجه قرار گرفته است. لذا در پژوهش حاضر از سیستم دیسکهای زیستی چرخان جهت تصفیه فاضلاب شهری استفاده شده است. جهت انجام تحقیق، یک واحد راکتور در مقیاس آزمایشگاهی با جنس پلکسی گلاس و تعداد 35 عدد دیسک استفاده شده و در ابتدا سیستم از مخزنی 20 لیتری به صورت کاملا بیهوازی به منظور افزایش راندمان راکتور استفاده شده است. لجن هوازی تصفیهخانه فاضلاب (روش لجن فعال) کشتارگاه به منظور تلقیح اولیه راکتور و شکر، اوره و کود پتاس برای تغذیه راکتور مورد استفاده قرار گرفته است. تحقیق در سه دوره به مدت 96 روز به طول انجامید. در طی انجام تحقیق میزان COD از مقدارmg/l.d 575 تاmg/l.d 1250 افزایش یافته است. دمای راکتور در طی دو دوره در محدوده دمایی مزوفیلیک و سایکروفیلیک قرار دارد. نتایج نشان داد که میزان ضخامت بیوفیلم روی سطح دیسکها 2 میلیمتر و تغییرات pH در محدوده 9 تا 7 است. راندمان حذف COD طی دوره دوم بین 48-13/19 درصد و طی دوره سوم بین 92-50 درصد است. طی بررسی فاکتور زمان ماند هیدرولیکی و تغییر سرعت چرخش دیسک به ترتیب بیشترین راندمان در زمان 24 ساعت برابر 93 درصد و در سرعت 12 دور در دقیقه به میزان 92 درصد حاصل شده است. با آزمایش بر روی فاضلاب واقعی راندمان 80 درصد حاصل شده که نسبت به راندمان فاضلاب آزمایشگاهی 12 درصد اختلاف دارد. | ||
| کلیدواژهها | ||
| تصفیه زیستی؛ سیستم دیسکهای زیستی چرخان؛ فاضلاب خانگی؛ فاضلاب واقعی | ||
| موضوعات | ||
| آلودگی آب ، فاضلاب؛ مهندسی محیط زیست | ||
| عنوان مقاله [English] | ||
| Evaluation of the efficiency of rotating bio-disk system in domestic wastewater treatment | ||
| نویسندگان [English] | ||
| mohammad hoseyn rabee gasak؛ mohammad reza doosti؛ mohammad javad zoqi | ||
| Department of Civil Engineering-Environment-Faculty of Engineering-Birjand University-Birjand-Iran | ||
| چکیده [English] | ||
| Due to the crisis of water shortage, the importance of wastewater treatment and the reuse of wastewater, today, the application of advanced methods of wastewater treatment has been considered. Therefore, in the present study, a rotating bio-disk system has been used to treat municipal wastewater. To conduct the research, a laboratory-scale reactor unit made of Plexiglas with 35 discs was used, and initially the system used a 20-liter tank in a completely anaerobic manner to increase the reactor efficiency. The aerobic sludge of the wastewater treatment plant of the slaughterhouse has been used for the initial inoculation of the reactor and sugar, urea and potash fertilizer have been used to feed the reactor. The study lasted 96 days in three periods. During the study, the COD level increased from 575 mg/l.d to 1250 mg/l.d. The reactor temperature is in the mesophilic and psychrophilic temperature range for two periods. The results showed that the thickness of the biofilm on the surface of the disks is 2 mm and the pH changes are in the range of 9 to 7. COD removal efficiency during the second period is between 19.13-48% and during the third period is between 50-92%. During the study of the hydraulic retention time factor and the change in the rotation speed of the disk, the highest efficiency was obtained at 93% in 24 hours and 92% at 12 rpm, respectively. Experiment with real wastewater has an efficiency of 80%, which is 12% different from the efficiency of laboratory wastewater. | ||
| کلیدواژهها [English] | ||
| Bioremediation, Rotating bio-disk system, Domestic wastewater, Real wastewater | ||
| مراجع | ||
|
[1] A.H. Javid, A.H. Hasani, S. Gahvarband, Evaluation of quality and quantity of food industry wastewater and its effect on the performance of wastewater treatment system, Environmental Science and Technology, 17(1) (2015) 47-38. [2] R. Ardakanian, Overview of water management in Iran. In Water Conservation, Reuse, and Recycling, Proceeding of an Iranian American Workshop, ( 2015) 153-172. [3] s. rahmani, e. alamatian, Management of wastewater and its application in combating the effects of drought, 1 ed., Green Ryan Gostar, tehran, 2017. [4] W. Perera, N. Bandara, M. Jayaweera, Treatment of Landfill Leachate using Sequencing Batch Reactor, Tropical Forestry and Environ, 4 (2104) 82-90. [5] A. AghayiTelikani, M. Nosrati, The role of biofilm in rotating biological disks for wastewater treatment, in: National Conference on Science and Technology, 2016. [6] P. Mathure, A.W. Patwardhan, Comparision of mass transfer effeciensy in horizontal rotating beds and rotating biological contactors, j.Chem Technol biotechnical, 80 (2015) 413-419. [7] E. Sahinkaya, Biodegradation of 4-CP and 2, 4-DCP Mixture in a Rotating Biological Contactor, Biochemical Engineering journal, 31 (2016) 141-147. [8] R.C. Brenner, J.A. Heidam, E.J. Opateker, Design Information on rotating Biological Contactors, Municipal environmental Research Laboratory, Cincinnati, 1985. [9] J.R. Grady, G.T. Diagger, H.C. Lim, Rotating biological contactor Mareel dekker, new York, 2011. [10] S.H. MousaviAliani, B. Ayati, H. GanjiDoost, Study of the efficiency of rotating biological disk systems in the removal of aniline, Journal of Water and Wastewater, 4 (2015). [11] D. Kulikowska, T. Jozwiak, P. Kowal, S. Ciesielski, Municipal landfill leachate nitrification in RBC biofilm - Process efficiency and molecular analysis of microbial structure, Bioresource Technology, 101(10) (2014) 3400-3405. [12] S.H. MirKhalili, S.H.M. Sooh, Treatment of wastewater contaminated with petroleum products using a rotating biological contact system (RBC reactor), in: the second national conference on health, environment and sustainable development, 2016. [13] T. Yun-lu, L. Dong-fang, M. Xian-rong, Y. Jie, W. Jin, L. Yu-xing, L. Ke-xun, J. Lander, Performance of a modified RBC system in simulated municipal wastewater treatment, Water Sci Technol, 66(9) (2018). [14] K. Malachova, Z. Rybkova, H. Sezimova, J. Cerven, C. Novotnya, Biodegradation and detoxification potential of rotating biological contactor (RBC) with Irpex lacteus for remediation of dye-containing wastewater, Water Research, 47(19) (2015) 7143-7148. [15] A.F. Duque, V.S. Bessa, P.M.I. Castro, Bacterial community dynamics in a rotating biological contactor treating 2-fluorophenol-containing wastewater, Journal of Industrial Microbiology & Biotechnology, 41(1) (2016) 97-104. [16] B. Mehravaran, H. Ansari, Study on increasing the environmental efficiency of the sanitary wastewater treatment biodisk system for irrigation (Case study of Khayyam power plant), in: National Congress of Irrigation and Drainage of Iran, 2016. [17] R. Su, G. Zhang, P. Wang, S. Li, R.M. Ravenelle, J.C. Crittenden, Treatment of Antibiotic Pharmaceutical Wastewater Using a Rotating Biological Contactor, Journal of Chemistry, 8 (2016). [18] R. Karimi, R. AsghariFard, M. KhalesiDoust, Study of the performance of the rotating biological disk system (RBC) in wastewater treatment of fixed and field hospitals, in: 4th National Conference on Defense Science and Engineering in the IRGC, 2015. [19] J. Li, X. Lu, Performance and Microbial Diversity in a Low-Energy ANF-WDSRBC System for the Post-Treatment of Decentralized Domestic Wastewater, Water Research, 9(330) (2017). [20] S. Talwar, V. Kumar, S. AnoopVerma, Feasibility of using combined TiO2 photocatalysis and RBC process for the treatment of real pharmaceutical wastewater, Journal of Photochemistry and Photobiology A: Chemistry, 353(15) (2018) 263-270. [21] M. Jafarzadeh, N. Mehrdadi, S.J.A. Hashemian, A.A. Azimi, Launching a hybrid anaerobic reactor (filter / UASB) for wastewater treatment in the petrochemical industry, Ecology 39 (2016) 58-49. [22] P. Boonsawang, S. Laeh, N. Intrasungkha, Enhancement of sludge granulation in anaerobic treatment of concentrated latex wastewater, Songklanakarin J. Sci. Technol, 30 (2018) 111-119. [23] APHA, Standard Methods for the Examination of Water and Wastewater, in, Am Pub Health Associat, Washington, 2005. [24] M. Rezaei, Medical Equipment Office, Fars University of Medical Sciences and Health Services, , 2017. [25] P.A. Kadu, A.A. Badge, Y.R.M. Rao, Treatment of Municipal Wastewater by using Rotating Biological Contractors (Rbc’s), American Journal of Engineering Research (AJER), 2(4) (2017) 127-132. [26] R.J. Su, Study on treatment of canteen wastewater using rotatingbiologicalcontactor, AdvancedMaterialsResearch, 113(116) (2014) 1597-1600. [27] S. Murugesan, Performance study on Rotating Biological Contactor, (2017). [28] S. Tyrrel, T. Stephenson, E. Cartmell, B. Jefferson, Rotating biological contactors for wastewater treatment - a review, Francis Hassard, Jeremy Biddle, Safety and Environmental Protection, 94 (2015) 285-306. [29] T. Yun-lu, L.D.-f. L, M. Xian-rong, Y. Jie, W. Jin, L. Yu-xing, L. Ke-xun, J. Lander, Performance of a modified RBC system in simulated municipal wastewater treatment, Water Sci Technol, (2012). [30] A. Akhbari, A.A.L. Zinatizadeh, P. Mohammadi, M. Irandoust, Y. Mansouri, Process modeling and analysis of biological nutrients removal in an integrated RBC-AS system using response surface methodology, Chemical Engineering Journal 168 (2017). [31] S.H. MousaviAliani, B. Ayati, H. Ganjidoust, Study of RBC Efficiency in Aniline Removal by Increasing Contactor Specific Surface, water and wastewater, (2012). [32] C. Sirtori, A. Zapata, I. Oller, W. Gernjak, A. Aguera, S. Malato, Decontamination industrial pharmaceutical wastewater by combining solarphoto-Fentonand biological treatment, Water Research, 43(3) (2013) 661-668. [33] H. Shi, H.J. Zheng, D.H. Zhao, Z.I. Wu, Treatment of nisin production wastewater by biochemical method, Chinese JournalofEnvironmentEngineering, 2(10) (2018) 1369-1372. [34] G. Najafpour, H.A. Yieng, H. Younesi, A. Zinatizadeh, Effect ofor ganicloading on performance ofrotating biological contac torsusing Palm Oil Mille ffluents, ProcessBiochemistry, 40(8) (2015) 2879-2884. [35] N. Vidal, R. Banares, I. Alcantara, R. Rodrıguez, M. Poch, Design of wastewater treatment plants using a conceptualdesignmethodology, Industrialand Engineering Chemistry Research, 41(20) (2012) 4993-5005. | ||
|
آمار تعداد مشاهده مقاله: 1,128 تعداد دریافت فایل اصل مقاله: 1,128 |
||