Packed cage rotating biological contactor for mustard tuber wastewater treatment: Performance and microbiome along the axial direction

2021 ◽  
Vol 44 ◽  
pp. 102384
Author(s):  
Yang Dong ◽  
Jinsong Guo ◽  
Zhen Zhong ◽  
Jianhui Wang ◽  
Youpeng Chen
Keyword(s):  
Wastewater Treatment ◽  
Axial Direction ◽  
Rotating Biological Contactor ◽  
Treatment Performance

Water and Wastewater Treatment for a Small Island Resort

1989 ◽  
Vol 21 (2) ◽  
pp. 189-193 ◽  
Author(s):  
B. Rigden
Keyword(s):  
Wastewater Treatment ◽  
Reverse Osmosis ◽  
Small Island ◽  
Rotating Biological Contactor ◽  
Water And Wastewater Treatment ◽  
Water And Wastewater ◽  
Operational Data ◽  
Reverse Osmosis Desalination

The design of a reverse osmosis desalination unit and a rotating biological contactor for water and wastewater treatment for a small island resort is described. Some operational data are presented and recommendations for design flows and loadings are made.

Evaluating the treatment performance of a full scale Activated Sludge Plant in Islamabad, Pakistan

2012 ◽  
Vol 7 (1) ◽  
Author(s):  
S. S. Fatima ◽  
S. Jamal Khan
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Wastewater Treatment Plant ◽  
Suspended Solids ◽  
Treatment Plant ◽  
Oxygen Demand ◽  
Full Scale ◽  
Operational Parameter ◽  
Mixed Liquor ◽  
Treatment Performance

In this study, the performance of wastewater treatment plant located at sector I-9 Islamabad, Pakistan, was evaluated. This full scale domestic wastewater treatment plant is based on conventional activated sludge process. The parameters which were monitored regularly included total suspended solids (TSS), mixed liquor suspended solids (MLSS), mixed liquor volatile suspended solids (MLVSS), biological oxygen demand (BOD), and chemical oxygen demand (COD). It was found that the biological degradation efficiency of the plant was below the desired levels in terms of COD and BOD. Also the plant operators were not maintaining consistent sludge retention time (SRT). Abrupt discharge of MLSS through the Surplus Activated sludge (SAS) pump was the main reason for the low MLSS in the aeration tank and consequently low treatment performance. In this study the SRT was optimized based on desired MLSS concentration between 3,000–3,500 mg/L and required performance in terms of BOD, COD and TSS. This study revealed that SRT is a very important operational parameter and its knowledge and correct implementation by the plant operators should be mandatory.

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