Comprehensive assessment of the microalgae-nitrifying bacteria competition in microalgae-based wastewater treatment systems: Relevant factors, evaluation methods and control strategies

2021 ◽  
pp. 102563
Author(s):  
J. González-Camejo ◽  
S. Aparicio ◽  
M. Pachés ◽  
L. Borrás ◽  
A. Seco
Keyword(s):  
Wastewater Treatment ◽  
Control Strategies ◽  
Evaluation Methods ◽  
Comprehensive Assessment ◽  
Nitrifying Bacteria ◽  
And Control ◽  
Wastewater Treatment Systems ◽  
Relevant Factors

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.

scholarly journals Fouling Issues in Membrane Bioreactors (MBRs) for Wastewater Treatment: Major Mechanisms, Prevention and Control Strategies

Processes ◽  
2014 ◽  
Vol 2 (4) ◽  
pp. 795-866 ◽  
Author(s):  
Petros Gkotsis ◽  
Dimitra Banti ◽  
Efrosini Peleka ◽  
Anastasios Zouboulis ◽  
Petros Samaras
Keyword(s):  
Wastewater Treatment ◽  
Prevention And Control ◽  
Control Strategies ◽  
Membrane Bioreactors ◽  
And Control

Study of heterotrophic nitrifying bacteria from wastewater treatment systems treating acrylonitrile, butadiene and styrene resin wastewater

2000 ◽  
Vol 42 (3-4) ◽  
pp. 315-321 ◽  
Author(s):  
T.-L. Hu ◽  
K.T. Kung
Keyword(s):  
Wastewater Treatment ◽  
Nitrogen Sources ◽  
Nitrifying Bacteria ◽  
Nitrification Rate ◽  
Biological Wastewater Treatment ◽  
Abs Resin ◽  
Acinetobacter Sp ◽  
Heterotrophic Nitrifying Bacteria ◽  
Corynebacterium Sp ◽  
Wastewater Treatment Systems

In this study we investigated the population of heterotrophic nitrifying bacteria in three biological wastewater treatment systems treating acrylonitrile, butadiene and styrene (ABS) resin wastewater. In addition to isolating and identifying these bacteria, we examined the physiological properties of the isolates, particularly utilization of acrylonitrile and its derivatives. An enrichment process was employed to isolate heterotrophic nitrifying bacteria from sludge samples taken from three biological wastewater treatment systems. Thirteen isolates were obtained and four strains were identified as Alcaligenes sp., Acinetobacter sp., Xanthomonas sp. and Corynebacterium sp. Alcaligenes sp. and Corynebacterium sp. have already been reported as heterotrophic nitrifiers. To our knowledge, this is the first time Acinetobacter sp. and Xanthomonas sp. have been reported as heterotrophic nitrifiers. The heterotrophic nitrifying isolates used acrylonitrile and acrylamide as the sole carbon and nitrogen sources. Moreover, adding an extra carbon source enhanced the nitrification rate.

In situ structure/function studies in wastewater treatment systems

1998 ◽  
Vol 37 (4-5) ◽  
pp. 413-416 ◽  
Author(s):  
Andreas Schramm ◽  
Dirk De Beer ◽  
Han van den Heuvel ◽  
Simon Ottengraf ◽  
Rudolf Amann
Keyword(s):  
Wastewater Treatment ◽  
16S Rrna ◽  
Structure Function ◽  
In Situ Hybridisation ◽  
Nitrifying Bacteria ◽  
Fluidised Bed ◽  
Fluidised Bed Reactor ◽  
Microelectrode Measurements ◽  
Wastewater Treatment Systems

As an example of the importance and the potential of in situ structure/function studies, nitrifying aggregates from different zones of a lab-scale fluidised bed reactor were analysed by microelectrode measurements of O2, NH4+, NO2−, and NO3− and in situ hybridisation targeting the 16S rRNA of the nitrifying bacteria. A shift from an ammonia oxidising to a nitrite oxidising community is present along the reactor. In the single aggregates an active nitrifying shell of about 100 μm could be related to the maximum abundance of nitrifiers in this zone. Interestingly, the main actors in this system are not representatives of the well-described genera Nitrosomonas and Nitrobacter but some other ammonia oxidisers from the beta subclass of Proteobacteria and a thus far unknown nitrite oxidising population.

Wastewater Treatment Systems: Modelling, Diagnosis and Control

2015 ◽  
Vol 4 (0) ◽  
pp. 9781780402864-9781780402864 ◽  
Author(s):  
G. Olsson ◽  
B. Newell
Keyword(s):  
Wastewater Treatment ◽  
Systems Modelling ◽  
And Control ◽  
Wastewater Treatment Systems
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