The characteristics of microbial ecosystem response with the changes of hydrolic retention time on an aerobic fixed-biofilm biological nutrient removal system

2004 ◽  
Vol 21 (3) ◽  
pp. 635-639 ◽  
Author(s):  
Hai-Uk Nam ◽  
Tae-Ho Lee ◽  
Young -O. Kim ◽  
Seung-Han Park ◽  
Tae-Joo Park
Keyword(s):  
Retention Time ◽  
Nutrient Removal ◽  
Biological Nutrient Removal ◽  
Ecosystem Response ◽  
Microbial Ecosystem ◽  
Removal System ◽  
Fixed Biofilm

The invisible BNR plant provides high quality effluent and recreational area for densely populated urban area

2009 ◽  
Vol 4 (1) ◽  
Author(s):  
E. Choi ◽  
Z. Yun ◽  
K.S. Min
Keyword(s):  
Nutrient Removal ◽  
Operating Temperature ◽  
Treatment Plant ◽  
Ground Level ◽  
Biological Nutrient Removal ◽  
High Quality ◽  
Sand Filter ◽  
Sport Facilities ◽  
Final Effluent ◽  
Removal System

In a densely populated area, a large wastewater treatment plant (WWTP) has been constructed in the underground. The plant is practically “invisible” to visitors and neighbours, and the ground level is used as a park and sport facilities in order to avoid the “not in my backyard” phenomenon. The WWTP has a 5-stage biological nutrient removal system utilizing the denitrifying PAO (dPAO) with a step feed in order to treat the weak sewage with higher nutrient removal requirement. Although the underground installation could be expected to increase plant operating temperature, the temperature increase was only 1°C. The polished final effluent from a sand filter produced average TN and TP concentrations of 5.11 mg/L and 0.91 mg/L, respectively with SS concentrations of 0.61 mg/L, indicating that the dPAO system combined with sand filter effectively produced a high quality effluent.

Metagenomic and metabolomic analysis reveals the effects of chemical phosphorus recovery on biological nutrient removal system

2017 ◽  
Vol 328 ◽  
pp. 1087-1097 ◽  
Author(s):  
Hongliang Dai ◽  
Zheqin Dai ◽  
Lihong Peng ◽  
Yifeng Wu ◽  
Haiming Zou ◽  
...  
Keyword(s):  
Nutrient Removal ◽  
Phosphorus Recovery ◽  
Biological Nutrient Removal ◽  
Metabolomic Analysis ◽  
Removal System

PRACTICAL CONSIDERATIONS FOR DESIGN OF A STEP-FEED BIOLOGICAL NUTRIENT REMOVAL SYSTEM

2000 ◽  
Vol 2000 (11) ◽  
pp. 803-823 ◽  
Author(s):  
Luis Carrio ◽  
Fred Streett ◽  
Kieth Mahoney ◽  
Christine deBarbadillo ◽  
James Anderson ◽  
...  
Keyword(s):  
Nutrient Removal ◽  
Biological Nutrient Removal ◽  
Removal System

Preliminary Investigation of Primary Sludge Hydrolysis

2017 ◽  
Author(s):  
Regimantas Dauknys ◽  
Aušra Mažeikienė ◽  
Anna Haluza ◽  
Illia Halauniou ◽  
Victor Yushchenko
Keyword(s):  
Organic Matter ◽  
Retention Time ◽  
Nutrient Removal ◽  
Preliminary Investigation ◽  
Biological Nutrient Removal ◽  
Primary Sludge ◽  
Sludge Retention Time ◽  
Hydrolysis Process ◽  
Sludge Hydrolysis ◽  
Hydrolysis Of

One of reasons of non-effective biological nutrient removal from wastewater is lack of readily biodegradable organic matter. This problem could be solved by application of sludge hydrolysis process. The conditions for hydrolysis of primary sludge could be created performing the recirculation of the primary sludge and ensuring the required sludge retention time. In the period of preliminary investigation, the following conditions were created in the primary sedimen-tation tank of Vitebsk WWTP: average sludge recirculation was 4.8 % of the inlet flowrate to the sedimentation tank and average SRT was 5 days. Obtained results showed that hydrolysis process allowed improving the ratio between organic matter and nutrients in wastewater.

Nutrient release, recovery and removal from waste sludge of a biological nutrient removal system

2014 ◽  
Vol 35 (21) ◽  
pp. 2734-2742 ◽  
Author(s):  
Yi Wang ◽  
Shu-Jian Zheng ◽  
Li-Ying Pei ◽  
Li Ke ◽  
Dang-cong Peng ◽  
...  
Keyword(s):  
Nutrient Removal ◽  
Nutrient Release ◽  
Biological Nutrient Removal ◽  
Waste Sludge ◽  
Removal System
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