Strict anaerobic side-stream reactor: effect of the sludge interchange ratio on sludge reduction in a biological nutrient removal process

2017 ◽  
Vol 25 (2) ◽  
pp. 1243-1256 ◽  
Author(s):  
Roberta Ferrentino ◽  
Michela Langone ◽  
Roberta Villa ◽  
Gianni Andreottola
Keyword(s):  
Nutrient Removal ◽  
Biological Nutrient Removal ◽  
Sludge Reduction ◽  
Removal Process ◽  
Side Stream

Enhancement of Phosphorus and Nitrogen Removal with a Side Stream Biological Nutrient Removal Process

1993 ◽  
Vol 28 (7) ◽  
pp. 89-96
Author(s):  
Sang Eun Lee ◽  
Kwang Soo Kim ◽  
Kap Soo Kim ◽  
Chang Whoe Kim
Keyword(s):  
Removal Efficiency ◽  
Total Nitrogen ◽  
Nitrogen Removal ◽  
Nutrient Removal ◽  
Phosphorus Content ◽  
Phosphorus Uptake ◽  
Biological Nutrient Removal ◽  
Removal Process ◽  
Side Stream ◽  
Total Nitrogen Removal

Bench scale experiments and pilot plant studies (20 m3/day) on a side stream biological nutrient removal process (P/L process) were conducted for 3 years using primary effluent of two different sewage treatment plants as influent. The phosphorus removal efficiency was always higher than 90% resulting in an effluent T-P concentration lower than 0.5 mg/l while total nitrogen removal efficiency of the P/L process was less than 50%. However, total nitrogen removal efficiency could be improved to 88% with some modification of the process. The presence of nitrate nitrogen higher than 2 mg/l in the phosphorus stripping tank significantly reduced the phosphorus release in the stripping tank. Phosphorus content of the sludge in the aeration basin was about 30% higher than that of the phosphorus stripping tank, however, phosphorus content in the aeration basin could become higher by recycling portions of the phosphorus rich supernatant to the aeration basin to utilize the phosphorus uptake capacity of the sludge in aerobic conditions more efficiently and also to reduce the alum requirement.

scholarly journals New Biological Nutrient Removal Process Using Denitrifying Phosphate-Accumulating Organisms.

2002 ◽  
Vol 25 (12) ◽  
pp. 751-755 ◽  
Author(s):  
Satoshi TSUNEDA ◽  
Johwan AHN ◽  
Tomotaka DAIDOU ◽  
Takashi OHNO ◽  
Akira HIRATA
Keyword(s):  
Nutrient Removal ◽  
Biological Nutrient Removal ◽  
Removal Process
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