scholarly journals Kinetics of Nutrient Removal in an Integrated Suspended Growth Reactor

2019 ◽  
Vol 11 (2) ◽  
Author(s):  
Najib Mohammed Yahya Almahbashi ◽  
◽  
Shamsul Rahman Mohamed Kutty ◽  
Yee Ching Chua ◽  
Abdulkadir Taofeeq Sholagberu ◽  
...  
Keyword(s):  
Nutrient Removal ◽  
Suspended Growth ◽  
Kinetics Of

scholarly journals Resuscitation of starved suspended- and attached-growth anaerobic ammonium oxidizing bacteria with and without acetate

2016 ◽  
Vol 75 (1) ◽  
pp. 115-127 ◽  
Author(s):  
Supaporn Phanwilai ◽  
Chalermraj Wantawin ◽  
Akihiko Terada ◽  
Pongsak (Lek) Noophan ◽  
Junko Munakata-Marr
Keyword(s):  
Nutrient Removal ◽  
Short Term ◽  
Attached Growth ◽  
Copy Numbers ◽  
Anammox Activity ◽  
Suspended Growth

Anammox application for nutrient removal from wastewater is increasing, though questions remain about anammox resilience to fluctuating conditions. Resuscitation of anammox suspended- and attached-growth cultures after 3 months of starvation was studied with and without acetate dosing. Without acetate, the attached-growth culture recovered more quickly than the suspended-growth culture. Suspended-growth cultures recovered more quickly (within 60 days) with weekly and daily acetate dosing than without, but anammox activity and copy numbers decreased with continued acetate addition. All attached-growth cultures recovered within 60 days, but after that activity with acetate dosing was consistently at least 20% lower than that without acetate addition. Ca. Jettenia caeni, Ca. Anammoxoglobus sp., Ca. Brocadia fulgida, Ca. Brocadia anammoxidans, Ca. Brocadia fulgida and Ca. Jettenia asiatica were identified. Acetate addition can significantly accelerate short-term resuscitation of enriched anammox suspended-growth cultures after starvation but may reduce anammox activity over the longer term in suspended- and attached-growth cultures.

Kinetic start-up performance of two large treatment plants for nutrient removal

2001 ◽  
Vol 43 (11) ◽  
pp. 153-160
Author(s):  
A. Haarbo ◽  
P. Harremoës ◽  
C. Thirsing
Keyword(s):  
Nutrient Removal ◽  
Wastewater Treatment Plants ◽  
Action Plan ◽  
Great Accuracy ◽  
Full Scale ◽  
Point Of View ◽  
Start Up ◽  
Main Emphasis ◽  
Optimum Solution ◽  
Kinetics Of

In 1987 an action plan was passed in the Danish Parliament demanding a considerable reduction of the discharge of nutrients to the aquatic environment in Denmark. Consequently, the two largest wastewater treatment plants in the Copenhagen area had to be upgraded to include nutrient removal. For more than 8 years an extensive effort has been made to determine an optimum solution for this upgrading from a technical and financial point of view. The work included six years of comprehensive pilot plant investigations with the aim of thoroughly studying and interpreting the kinetics of the processes involved. The investigations revealed valuable information particularly concerning limitations of the nitrification process. Consequently, the investigations contributed to an expectation of no unforeseen problems during the implementation of the upgraded plants. This paper presents the results of the start-up of the two full-scale plants with the main emphasis laid on the kinetic performance in relation to the information achieved from the pilot tests. The results showed that the start-up of the full scale plants proceeded with great accuracy as expected from the investigations. Accordingly, the implementation of the plants was carried out successfully, ending an era of more than 10 years in total.

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