Operational issues and proposed solutions in wastewater treatment plants in the Western Black Sea basin of Turkey
Yükleniyor...
Dosyalar
Tarih
2022
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The operational issues that are frequently encountered in municipal wastewater treatment plants with a capacity of over 10,000 m3/day in the Western Black Sea Basin of Turkey were investigated. The plants covered in the study consist of pre-treatment units and biological treatment (activated sludge system) units. The operational problems that may occur in each of these units are discussed and solution proposals are presented based on the characteristics of the basin. Sand accumulation problems originated due to the sewage system in bar screens and grit chambers which was affected by seasonal conditions. Besides, the difficulty of the sludge collecting mechanism was identified as the most dominant operational issue with a contribution value of 37 % in the primary settling tank. The insufficient dissolved oxygen concentration was determined as the most abundant issue with a contribution value of 30 % in the aeration tank. Floating flocks and spilling over the weirs were found to contribute the highest with a value of 34 %, these were followed by pinpoint and straggler flocs (26 %), deflocculation (22 %), and rising sludge (18 %) in the secondary settling tank. The issues of primary and final settling tanks were found to be related to the monitoring of sludge level and sludge collecting mechanism. Moreover, the major issues in the aeration tank can be eliminated by arranging the unit according to seasonal conditions. Operation selection and design of the plants must be configured consistent with the geographical, meteorological, climatic, economic, and sewage system specifications of the region. This study would be useful for resolving activated sludge settling and/or operating problems in existing systems and for designing new or upgraded plants. © 2023 Elsevier Ltd. All rights reserved.
Açıklama
Anahtar Kelimeler
Operational issues, Wastewater treatment plant, Western black sea basin, Activated sludge process, Dissolved oxygen, Effluents, Grit chambers, Reclamation, Settling tanks, Sewage pumping plants, Specifications, Water treatment plants, Aeration tanks, Black sea, Condition, Contribution values, Municipal wastewater treatment plants, Operational issues, Pre-treatments, Sewage system, Waste water treatment plants, Western black sea basin, Wastewater treatment
Kaynak
Materials Today: Proceedings
WoS Q Değeri
Scopus Q Değeri
Q2
