Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Investigation of influent COD/TAN ratio and loading rate effects on carbon and nitrogen removal via aerobic granules
Download
index.pdf
Date
2014
Author
Kocatürk, İrem
Metadata
Show full item record
Item Usage Stats
311
views
87
downloads
Cite This
Aerobic granulation serves as a promising treatment technology over the conventional systems due to its advantages such as high biomass retention capacity, high settleability, ease of separation from the effluent, toxicity resistance, capacity to handle high organic loading rates and suitability for high chemical oxygen demand (COD) wastewaters. The scope of the thesis is to investigate the influent COD/total ammonifiable nitrogen (TAN = NH4-N + NH3-N) ratio and loading rate effects for the removal of carbon and nitrogen from wastewaters by aerobic granular SBR operation. Firstly, the effects of influent COD/TAN ratios (1 to 30) were investigated. The optimum influent COD/TAN ratio leading to both the highest COD (75%) and TAN (90%) removal efficiencies and maintenance of granular stability under the studied conditions was determined as 7.5. It was speculated that the influent COD/TAN ratio affected the aerobic granular composition via enrichment of heterotrophic bacteria at higher ratios (10-20-30) and nitrifiers at lower ratios (5-3.5-2-1). Secondly, the effects of increasing organic loading rates from 0.75-12 g COD/Lday, and nitrogen loading rates from 0.1-1.6 g TAN/Lday were investigated at vi a constant influent COD/TAN ratio of 7.5. The optimum loading rates were determined as 1.5 g COD/Lday and 0.2 g TAN/Lday, regarding the provision of the highest COD (85±1%), TAN (87±2%) and total nitrogen (TN) (49±17%) removal efficiencies, as well as formation of granules with high stability. The utilization of aerobic granular systems for sugar beet processing wastewater treatment, and the effect of this wastewater on aerobic granules were also investigated. It was found that the raw sugar beet processing wastewater with high solids content (2255±250 mg/L total suspended solids, i.e TSS) could be treated successfully via aerobic granular sludge with removal efficiencies of 65±5% total chemical oxygen demand (tCOD), 87±1% soluble chemical oxygen demand (sCOD), 58±10% TSS and 61±4%TAN. Results of this study are expected to be used for the determination of the suitable influent COD/TAN ratio and the loading rates that provide high carbon and nitrogen treatment efficiencies and maintenance of granular stability in the upcoming studies employing aerobic granular systems.
Subject Keywords
Nitrification.
,
Denitrification.
,
Aerobic granulation.
,
Sewage
URI
http://etd.lib.metu.edu.tr/upload/12617991/index.pdf
https://hdl.handle.net/11511/24035
Collections
Graduate School of Natural and Applied Sciences, Thesis
Suggestions
OpenMETU
Core
Investigation of activated sludge bioflocculation : influence of magnesium ions
Turtin, İpek; Sanin, Faika Dilek; Department of Environmental Engineering (2005)
Activated sludge systems are the most widely used biological wastewater treatment processes all over the world. The main working principles of an activated sludge system are the oxidation of biologically degradable wastes by microorganisms and the subsequent separation of the newly formed biomass from the treated effluent. Separation by settling is the most troublesome stage of an activated sludge process. A decrease in the efficiency of the separation of microbial biomass from the treated effluent causes a...
Treatment and valorization of anaerobic digestate
Ülgüdür, Nilüfer; Bayramoğlu, Tuba Hande; Demirer, Göksel Niyazi; Department of Environmental Engineering (2019)
Anaerobic digestion is a widely applied process for the stabilization and treatment of high-strength wastes. The process has two outputs, biogas and digestate. Even though biogas produced during the treatment is a renewable energy source and has positive impacts on improving the economics of the plant, the treatment and disposal of the digestates present a challenge. The treatment methods offered so far are either costly or low yielded which drives off these uneconomic and non-viable treatment processes fro...
Investigation of the use of aerobic granules for the treatment of sugar beet processing wastewater
KOCATURK, İREM; Bayramoğlu, Tuba Hande (2015-10-18)
The treatment of sugar beet processing wastewater in aerobic granular sequencing batch reactor (SBR) was examined in terms of chemical oxygen demand (COD) and nitrogen removal efficiency. The effect of sugar beet processing wastewater of high solid content, namely 2255 +/- 250mg/L total suspended solids (TSS), on granular sludge was also investigated. Aerobic granular SBR initially operated with the effluent of anaerobic digester treating sugar beet processing wastewater (Part I) achieved average removal ef...
Determination of the optimum loading strategies for monochloro-, trichloro-, and 2,4-dichlorophenoxyacetic acids to anaerobic cultures
GÜVEN, ENGİN; Bayramoğlu, Tuba Hande; Demirer, Göksel Niyazi (2000-01-01)
With respect to their adverse health and environmental effects, halogenated organic compounds (HOCs) are among the most important priority pollutants. HOCs cannot be easily biodegraded. However. if suitable microbial cultures are acclimated to these compounds properly, and the optimum operating conditions are achieved, HOCs can be removed with biological methods. Recently, great interest has focused on reductive anaerobic dehalogenation for the removal of these compounds. This process yields lower halogenat...
Investigation of the Therapeutic Effects of Palbociclib Conjugated Magnetic Nanoparticles on Different Types of Breast Cancer Cell Lines
Parsian, Maryam; MUTLU, PELİN; Taghavi Pourianazar, Negar; Yalcin Azarkan, Serap; Gündüz, Ufuk (2023-01-01)
Introduction: Drug targeting and controlled drug release systems in cancer treatment have many advantages over conventional chemotherapy in terms of limiting systemic toxicity, side effects, and overcoming drug resistance. Methods and Results: In this paper, fabricating nanoscale delivery system composed of magnetic nanoparticles (MNPs) covered with poly-amidoamine (PAMAM) dendrimers and using its advantages were fully used to help the chemotherapeutic drug, Palbociclib, effectively reach tumors, specifical...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
İ. Kocatürk, “Investigation of influent COD/TAN ratio and loading rate effects on carbon and nitrogen removal via aerobic granules,” M.S. - Master of Science, Middle East Technical University, 2014.
