Lifecycle Comparison of Mainstream Anaerobic Baffled Reactor and Conventional Activated Sludge Systems for Domestic Wastewater Treatment

2018 ◽  
Vol 52 (18) ◽  
pp. 10500-10510 ◽  
Author(s):  
Andrew R. Pfluger ◽  
Jennie L. Callahan ◽  
Jennifer Stokes-Draut ◽  
Dotti F. Ramey ◽  
Sonja Gagen ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Domestic Wastewater ◽  
Anaerobic Baffled Reactor ◽  
Conventional Activated Sludge ◽  
Domestic Wastewater Treatment ◽  
Activated Sludge Systems

Effect of blending landfill leachate with activated sludge on the domestic wastewater treatment process

2019 ◽  
Vol 5 (2) ◽  
pp. 268-276 ◽  
Author(s):  
Min Zheng ◽  
Siqi Li ◽  
Qian Dong ◽  
Xia Huang ◽  
Yanchen Liu
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Landfill Leachate ◽  
Treatment Process ◽  
Domestic Wastewater ◽  
Free Ammonia ◽  
Wastewater Treatment Process ◽  
Domestic Wastewater Treatment ◽  
High Level ◽  
Ammonia Exposure

A sludge contact is proposed to form high-level free ammonia exposure for co-treatment of landfill leachate with domestic wastewater.

Proliferation of glycogen accumulating organisms induced by Fe(III) dosing in a domestic wastewater treatment plant

2006 ◽  
Vol 54 (1) ◽  
pp. 101-109 ◽  
Author(s):  
A. Jobbágy ◽  
B. Literáthy ◽  
M.-T. Wong ◽  
G. Tardy ◽  
W.-T. Liu
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Wastewater Treatment Plant ◽  
Phosphorus Deficiency ◽  
Treatment Plant ◽  
Domestic Wastewater ◽  
Chemical Precipitation ◽  
Microbiological Analysis ◽  
Domestic Wastewater Treatment ◽  
Polyphosphate Accumulating Organisms

To meet the effluent requirements given for the sensitive receiving body, the Southpest Wastewater Treatment Plant of Budapest, Hungary uses a combined activated sludge-biofilter system with chemical precipitation for P removal. Causes of the proliferation of glycogen accumulating organisms (GAOs) observed in the unaerated/oxic activated sludge unit of this system were investigated both in full-scale and in lab-scale experiments combined with a detailed analysis of the microbial communities. Concentration profile measurements throughout the 8-stage activated sludge unit indicated anaerobic conditions in the first two unaerated reactors and low orthophosphate level (<1 mg l−1) in all of the stages that could not be attributed to the influent quality, but to Fe (III)-dosing to the returned activated sludge. Microbiological analysis revealed the presence of GAOs from the GB group in the Gammaproteobacteria and occasionally tetrad-forming organisms from Actinobacteria, and the absence of Rhodocyclus-related polyphosphate accumulating organisms (PAOs) in the activated sludge samples. Comparative lab-scale studies carried out in two identically arranged UCT-systems with staged anoxic reactors also confirmed that Fe (III)-dosing may result in phosphorus deficiency of the microbial niche, leading to the suppression of growth and EBPR activity of PAOs and to the proliferation of GAOs.

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