A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Role of Micronutrients on Dyeing Wastewater Treatment in Activated Sludge Process
Adequate individual supplements of Zn, Co and Mo increased chemical oxygen demand (COD) removal and specific oxygen uptake rates during activated sludge treatment of dyeing wastewater, while overdoses of micronutrients can decrease metabolic rates. The effects of combing Zn, Co, and Mo at different doses were investigated using response surface methodology, with a second order polynomial equation: Y = 78.19+ 0.17X1 + 37.33 X2 + 20.20X3 – 5.58X1X2 − 63.05 X2X3, where Y means COD removal rate (%), X1 means Co concentration, X2 means Zn concentration, X3 means Mo concentration. The maximum COD removal efficiency of 89.41% was achieved with doses of 0.02 mg/L Co, 0.24 mg/L Zn and 0.45 mg/L Mo. Both the combinations of Zn‐Co and Zn‐Mo acted antagonistically for COD removal efficiency, and the combination of Co‐Mo was negligible to COD removal efficiency. Doses of micronutrients, particularly Zn, Co and Mo, were beneficial for microbial shift towards Planctomyces and Bacteroidetes.
Role of Micronutrients on Dyeing Wastewater Treatment in Activated Sludge Process
Adequate individual supplements of Zn, Co and Mo increased chemical oxygen demand (COD) removal and specific oxygen uptake rates during activated sludge treatment of dyeing wastewater, while overdoses of micronutrients can decrease metabolic rates. The effects of combing Zn, Co, and Mo at different doses were investigated using response surface methodology, with a second order polynomial equation: Y = 78.19+ 0.17X1 + 37.33 X2 + 20.20X3 – 5.58X1X2 − 63.05 X2X3, where Y means COD removal rate (%), X1 means Co concentration, X2 means Zn concentration, X3 means Mo concentration. The maximum COD removal efficiency of 89.41% was achieved with doses of 0.02 mg/L Co, 0.24 mg/L Zn and 0.45 mg/L Mo. Both the combinations of Zn‐Co and Zn‐Mo acted antagonistically for COD removal efficiency, and the combination of Co‐Mo was negligible to COD removal efficiency. Doses of micronutrients, particularly Zn, Co and Mo, were beneficial for microbial shift towards Planctomyces and Bacteroidetes.
Role of Micronutrients on Dyeing Wastewater Treatment in Activated Sludge Process
Zhou, Lu (author) / Peng, Biao (author) / Xiao, Keke (author)
Water Environment Research ; 89 ; 221-227
2017-03-01
7 pages
Article (Journal)
Electronic Resource
English
Dyeing wastewater treatment by activated sludge process with a polyurethane fluidized bed biofilm
| British Library Conference Proceedings | 1996
Dyeing wastewater treatment by activated sludge process with a polyurethane fluidized bed biofilm
| British Library Conference Proceedings | 1996
Activated-sludge process for wastewater treatment
Elsevier | 1986
4961854 Activated sludge wastewater treatment process
Elsevier | 1991
4537682 Activated sludge wastewater treating process
Elsevier | 1987