Advanced sewage treatment process with excess sludge reduction and phosphorus recovery

2005 ◽  
Vol 39 (5) ◽  
pp. 902-910 ◽  
Author(s):  
W. Saktaywin ◽  
H. Tsuno ◽  
H. Nagare ◽  
T. Soyama ◽  
J. Weerapakkaroon
Keyword(s):  
Treatment Process ◽  
Sewage Treatment ◽  
Phosphorus Recovery ◽  
Sludge Reduction ◽  
Excess Sludge ◽  
Excess Sludge Reduction

Operation of a new sewage treatment process with technologies of excess sludge reduction and phosphorus recovery

2006 ◽  
Vol 53 (12) ◽  
pp. 217-227 ◽  
Author(s):  
W. Saktaywin ◽  
H. Tsuno ◽  
H. Nagare ◽  
T. Soyama
Keyword(s):  
Phosphorus Removal ◽  
Treatment Process ◽  
Sewage Treatment ◽  
Biomass Concentration ◽  
Phosphorus Recovery ◽  
Sludge Reduction ◽  
Excess Sludge ◽  
New Process ◽  
Crystallisation Process ◽  
Excess Sludge Reduction

This paper shows the potential application of a new sewage treatment process with technologies of excess sludge reduction and phosphorus recovery. The process incorporated ozonation for excess sludge reduction and crystallisation process for phosphorus recovery to a conventional anaerobic/oxic (A/O) phosphorus removal process. A lab-scale continuous operation experiment was conducted with the ratio of sludge flow rate to ozonation tank of 1.1% of sewage inflow under 30 to 40 mgO3/gSS of ozone consumption and with sludge wasting ratio of 0.34% (one-fifth of a conventional A/O process). Throughout the operational experiment, a 60% reduction of excess sludge production was achieved in the new process. A biomass concentration of 2,300 mg/L was maintained, and the accumulation of inactive biomass was not observed. The new process was estimated to give a phosphorus recovery degree of more than 70% as an advantage of excess sludge reduction. The slight increase in effluent COD was observed, but the process performance was maintained at a satisfactory level. These facts demonstrate an effectiveness of the new process for excess sludge reduction as well as for phosphorus recovery.

Advanced Sewage Treatment with Ozone Under Excess Sludge Reduction, Disinfection and Removal of EDCs

2008 ◽  
Vol 30 (3) ◽  
pp. 238-245 ◽  
Author(s):  
Hiroshi Tsuno ◽  
Kiyomi Arakawa ◽  
Yasuhiro Kato ◽  
Hideaki Nagare
Keyword(s):  
Sewage Treatment ◽  
Sludge Reduction ◽  
Excess Sludge ◽  
Excess Sludge Reduction

Investigation into cyclic utilization of carbon source in an advanced sludge reduction, inorganic solids separation, phosphorus recovery, and enhanced nutrient removal (SIPER) wastewater treatment process

2015 ◽  
Vol 72 (9) ◽  
pp. 1628-1634
Author(s):  
Peng Yan ◽  
Fang-Ying Ji ◽  
Jing Wang ◽  
You-Peng Chen ◽  
Yu Shen ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Nutrient Removal ◽  
Treatment Process ◽  
Phosphorus Recovery ◽  
Sludge Reduction ◽  
Excess Sludge ◽  
Wastewater Treatment Process ◽  
Inorganic Solids ◽  
Cyclic Utilization ◽  
Solids Separation

An advanced wastewater treatment process (SIPER) was developed to simultaneously reduce sludge production, prevent the accumulation of inorganic solids, recover phosphorus, and enhance nutrient removal. The ability to recover organic substance from excess sludge to enhance nutrient removal (especially nitrogen) and its performance as a C-source were evaluated in this study. The chemical oxygen demand/total nitrogen (COD/TN) and volatile fatty acids/total phosphorus (VFA/TP) ratios for the supernatant of the alkaline-treated sludge were 3.1 times and 2.7 times those of the influent, respectively. The biodegradability of the supernatant was much better than that of the influent. The system COD was increased by 91 mg/L, and nitrogen removal was improved by 19.6% (the removal rate for TN reached 80.4%) after the return of the alkaline-treated sludge as an internal C-source. The C-source recovered from the excess sludge was successfully used to enhance nitrogen removal. The internal C-source contributed 24.1% of the total C-source, and the cyclic utilization of the system C-source was achieved by recirculation of alkaline-treated sludge in the sludge reduction, inorganic solids separation, phosphorus recovery (SIPER) process.

scholarly journals Excess Sludge Reduction and Biomass Characteristics in Swim-Bed Wastewater Treatment Process

2007 ◽  
Vol 43 (2) ◽  
pp. 73-82
Author(s):  
YINGJUN CHENG ◽  
DAISUKE YAZAKI ◽  
SEN QIAO ◽  
YUSUKE WATANABE ◽  
TOICHIRO KOYAMA ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Treatment Process ◽  
Sludge Reduction ◽  
Excess Sludge ◽  
Wastewater Treatment Process ◽  
Excess Sludge Reduction
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