Removal of color and COD from dyeing process wastewater using electric arc furnace dust as adsorbent
2
Issued Date
2003
Copyright Date
2003
Resource Type
Language
eng
File Type
application/pdf
No. of Pages/File Size
x, 132 leaves : ill.
ISBN
9740432328
9789740432326
9789740432326
Access Rights
open access
Rights
ผลงานนี้เป็นลิขสิทธิ์ของมหาวิทยาลัยมหิดล ขอสงวนไว้สำหรับเพื่อการศึกษาเท่านั้น ต้องอ้างอิงแหล่งที่มา ห้ามดัดแปลงเนื้อหา และห้ามนำไปใช้เพื่อการค้า
Rights Holder(s)
Mahidol University
Bibliographic Citation
Thesis (M.Sc. (Environmental Technology))--Mahidol University, 2003
Suggested Citation
Wachira Chaiyabut Removal of color and COD from dyeing process wastewater using electric arc furnace dust as adsorbent. Thesis (M.Sc. (Environmental Technology))--Mahidol University, 2003. Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/104596
Title
Removal of color and COD from dyeing process wastewater using electric arc furnace dust as adsorbent
Alternative Title(s)
การกำจัดสีและซีโอดีในน้ำเสียจากกระบวนการย้อมในอุตสาหกรรมสิ่งทอโดยใช้ฝุ่นจากเตาอาร์กไฟฟ้าในอุตสาหกรรมหลอมเหล็กเป็นตัวดูดซับ
Author(s)
Abstract
The main objective of this research was to study the removal efficiency of color and COD from dyeing wastewater in the textile industry using Electric Arc Furnace (EAF) dust. A laboratory scale with a continuous model was used to determine the optimum treatment condition by varying contact time, settling time and EAF dust dosages. The contact time was set at 10, 20 and 30 minutes, the settling time at 60, 90 and 120 minutes, and the EAF dust dosages at 200, 250 and 300 g/L. Results indicated that the contact time, settling time and EAF dust dosages were the important operating factors influencing the treatment efficiency of the textile wastewater treatment process. The study showed that when the contact time increased, the color and COD removal efficiencies were significantly increased (P < 0.05), and the concentrations of suspended solids significantly decreased (P < 0.05). However, at 90 minutes settling time, color removal efficiency was significantly greater than at 120 and 60 minutes (P < 0.05). For COD removal efficiency, it was not different at the settling times of 90 and 120 minutes. In addition, it was observed that the concentrations of suspended solids in the effluent decreased as the settling time increased. For the effects of EAF dust, the color and COD removal efficiency significantly increased when EAF dust dosages increased from 200 to 250 g/L, but remained the same at the EAF dust dosage of 300 g/L. The concentrations of suspended solids in the effluent also increased significantly (P < 0.05) when the dosages of EAF dust increased from 250 to 300 g/L. The optimum treatment condition was at the contact time of 20 minutes, 90 minutes settling time and 250 g/L of EAF dust dosages which yielded Color and COD removal efficiencies of 87.35 % and 66.86 %, respectively. Under the optimum condition, the color, COD, SS and Zinc in the effluent all met the required effluent standards stipulated by the Ministry of Industry of Thailand.
Description
Environmental Technology (Mahidol University 2003)
Degree Name
Master of Science
Degree Level
Master's degree
Degree Department
Faculty of Public Health
Degree Discipline
Environmental Technology
Degree Grantor(s)
Mahidol University