Occurrence and dissipation of veterinary antibiotics in two typical swine wastewater treatment systems in east China

2011 ◽  
Vol 184 (4) ◽  
pp. 2205-2217 ◽  
Author(s):  
Yongshan Chen ◽  
Haibo Zhang ◽  
Yongming Luo ◽  
Jing Song
Keyword(s):  
Wastewater Treatment ◽  
Swine Wastewater ◽  
East China ◽  
Veterinary Antibiotics ◽  
Wastewater Treatment Systems

scholarly journals Comparative analysis of the composition of bacterial communities from two constructed wetlands for municipal and swine wastewater treatment

2009 ◽  
Vol 8 (1) ◽  
pp. 147-157 ◽  
Author(s):  
Paula Arroyo ◽  
Gemma Ansola ◽  
Ivan Blanco ◽  
Patricia Molleda ◽  
Estanislao de Luis Calabuig ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Community Structure ◽  
Bacterial Community ◽  
Bacterial Communities ◽  
Bacterial Community Structure ◽  
Typha Latifolia ◽  
Treatment System ◽  
Swine Wastewater ◽  
Wastewater Treatment System ◽  
Wastewater Treatment Systems

This work provides information about bacterial community structure in natural wastewater treatment systems treating different types of wastewater. The diversity and composition of bacterial communities associated with the rhizosphere of Typha latifolia and Salix atrocinerea were studied and compared among two different natural wastewater treatment systems, using the direct sequencing of the 16S ribosomal RNA codifying genes. Phylogenetic affiliations of the bacteria detected allowed us to define the main groups present in these particular ecosystems. Moreover, bacterial community structure was studied through two diversity indices. Ten identified and five non-identified phyla were found in the samples; the phylum Proteobacteria was the predominant group in the four ecosystems. The results showed a bacterial community dominated by beta-proteobacteria and a lower diversity value in the swine wastewater treatment system. The municipal wastewater treatment system presented a high diverse community in both macrophytes (Typha latifolia and Salix atrocinerea), with gamma-proteobacteria and alpha-proteobacteria, respectively, as the most abundant groups.

Occurrence, fate and mass loadings of antibiotics in two swine wastewater treatment systems

2018 ◽  
Vol 639 ◽  
pp. 1421-1431 ◽  
Author(s):  
Min Zhang ◽  
You-Sheng Liu ◽  
Jian-Liang Zhao ◽  
Wang-Rong Liu ◽  
Liang-Ying He ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Swine Wastewater ◽  
Wastewater Treatment Systems

Optimization and Control Petroleum Refinery Wastewater Treatment Systems — Status, Trends and Needs

1989 ◽  
Vol 24 (3) ◽  
pp. 463-477
Author(s):  
Stephen G. Nutt
Keyword(s):  
Wastewater Treatment ◽  
Process Control ◽  
Petroleum Refinery ◽  
Control Strategies ◽  
Refinery Wastewater ◽  
Statistical Process ◽  
Petroleum Refinery Wastewater ◽  
Optimization And Control ◽  
And Control ◽  
Wastewater Treatment Systems

Abstract Based on discussions in workshop sessions, several recurring themes became evident with respect to the optimization and control of petroleum refinery wastewater treatment systems to achieve effective removal of toxic contaminants. It was apparent that statistical process control (SPC) techniques are finding more widespread use and have been found to be effective. However, the implementation of real-time process control strategies in petroleum refinery wastewater treatment systems is in its infancy. Considerable effort will need to be expended to demonstrate the practicality of on-line sensors, and the utility of automated process control in petroleum refinery wastewater treatment systems. This paper provides a summary of the discussions held at the workshop.

The influence of currents on circular secondary clarifier performance and design

1996 ◽  
Vol 34 (3-4) ◽  
pp. 405-412 ◽  
Author(s):  
Andrea Deininger ◽  
Frank W. Günthert ◽  
Peter A. Wilderer
Keyword(s):  
Wastewater Treatment ◽  
Density Currents ◽  
Clear Water ◽  
Performance Measurements ◽  
Design Procedures ◽  
Secondary Clarifier ◽  
Current Design ◽  
Hydraulic Load ◽  
Novel Design ◽  
Wastewater Treatment Systems

Density currents in the deeper zones of clarifiers and currents in the clear water zone have a significant influence on clarifier performance. Measurements of flow velocity profiles were conducted in full-scale horizontally flown circular secondary clarifiers. Relations between the hydraulic load and the development of density currents could be detected. Those patterns are not taken into account in current design procedures. Stationary design approaches are mainly based on the overflow rate. Novel design methods based on the dynamic behavior of flow and density distribution in clarifiers are needed in order to improve the efficacy of wastewater treatment systems.

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