Evaluation of sludge reduction and carbon source recovery from excess sludge by the advanced Sludge reduction, Inorganic solids separation, Phosphorus recovery, and Enhanced nutrient Removal (SIPER) wastewater treatment process

2013 ◽  
Vol 150 ◽  
pp. 344-351 ◽  
Author(s):  
Peng Yan ◽  
Fangying Ji ◽  
Jing Wang ◽  
Jianping Fan ◽  
Wei Guan ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Carbon Source ◽  
Nutrient Removal ◽  
Treatment Process ◽  
Phosphorus Recovery ◽  
Sludge Reduction ◽  
Excess Sludge ◽  
Wastewater Treatment Process ◽  
Inorganic Solids ◽  
Solids Separation

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

scholarly journals Simultaneous Denitrification and Bio-Methanol Production for Sustainable Operation of Biogas Plants

2019 ◽  
Vol 11 (23) ◽  
pp. 6658 ◽  
Author(s):  
I-Tae Kim
Keyword(s):  
Wastewater Treatment ◽  
Carbon Source ◽  
Food Waste ◽  
Treatment Process ◽  
Wastewater Treatment Plants ◽  
Treatment Efficiency ◽  
Wastewater Treatment Process ◽  
Methanol Production ◽  
Sustainable Operation ◽  
Biogas Plants

This study was conducted to secure the sustainability of biogas plants for generating resources from food waste (FW) leachates, which are prohibited from marine dumping and have been obligated to be completely treated on land since 2013 in South Korea. The aim of this study is to reduce the nitrogen load of the treatment process while producing bio-methanol using digested FW leachate diverted into wastewater treatment plants. By using biogas in conditions where methylobacter (M. marinus 88.2%) with strong tolerance to highly chlorinated FW leachate dominated, 3.82 mM of methanol production and 56.1% of total nitrogen (TN) removal were possible. Therefore, the proposed method can contribute to improving the treatment efficiency by accommodating twice the current carried-in FW leachate amount based on TN or by significantly reducing the nitrogen load in the subsequent wastewater treatment process. Moreover, the produced methanol can be an effective alternative for carbon source supply for denitrification in the subsequent process.

Biological wastewater treatment by a bioreactor with repeated coupling of aerobes and anaerobes aiming at on-site reduction of excess sludge

2006 ◽  
Vol 53 (9) ◽  
pp. 71-77 ◽  
Author(s):  
Anfeng Yu ◽  
Quan Feng ◽  
Zehua Liu ◽  
Yunan Zhou ◽  
Xin-Hui Xing
Keyword(s):  
Wastewater Treatment ◽  
Treatment Process ◽  
Removal Rate ◽  
Settling Tank ◽  
Technological Innovations ◽  
Biological Wastewater Treatment ◽  
Excess Sludge ◽  
Wastewater Treatment Process ◽  
Complex Microbial Community ◽  
Continuous Running

Activated sludge has been widely used in wastewater treatment throughout the world. However, the biggest disadvantage of this method is the by-production of excess sludge in a large amount, resulting in difficulties in operation and high costs for wastewater treatment. Technological innovations for wastewater treatment capable of reducing excess sludge have thus become research topics of interest in recent years. In our present research, we developed a new biological wastewater treatment process by repeated coupling of aerobes and anaerobes (rCAA) to reduce the excess sludge during the treatment of wastewater. During 460-day continuous running, COD (300–700 mg/L) and TOC (100–350 mg/L) were effectively removed, of which the removal rate was above 80 and 90%, respectively. SS in the effluent was 13 mg/L on average in the rCAA bioreactor without a settling tank. The on-site reduction of the excess sludge in the rCAA might be contributed by several mechanisms. The degradation of the grown aerobes after moving into the anaerobic regions was considered to be one of the most important factors. Besides, the repeatedly coupling of aerobes and anaerobes could also result in a complex microbial community with more metazoans and decoupling of the microbial anabolism and catabolism.

A strategy in wastewater treatment process for significant reduction of excess sludge production

2002 ◽  
Vol 45 (12) ◽  
pp. 127-134 ◽  
Author(s):  
N. Shiota ◽  
A. Akashi ◽  
S. Hasegawa
Keyword(s):  
Wastewater Treatment ◽  
Treatment Process ◽  
Pilot Scale ◽  
Aeration Tank ◽  
Excess Sludge ◽  
Wastewater Treatment Process ◽  
Conventional Activated Sludge ◽  
New Process ◽  
Treatment Step ◽  
Sludge Production

A novel wastewater treatment process (S-TE PROCESS®) with significantly reduced production of excess sludge has been developed. The process consists of two different stages, one for a biological wastewater treatment and the other for a thermophilic aerobic digestion of the resulting sludge. A portion of return sludge from the wastewater treatment step is injected into a thermophilic aerobic sludge digester (TASD), in which the injected sludge is solubilized by the action of thermophilic aerobic bacteria. The solubilized sludge is returned to the aeration tank in the wastewater treatment step for its further degradation. Pilot-scale facilities of the S-TE process and the conventional activated sludge process as a control, both treating the same industrial wastewater, were comparatively operated for totally 270 days. As a result, 93% reduction in overall excess sludge production was achieved in the S-TE operation. The SS solubilization rate in TASD was stable at around 30%. Only a slight increase in the effluent SS and TOC concentrations was observed compared with those of the control facility. Otherwise the removal efficiency of TOC was approximately 95% for both plants. A full-scale plant treating domestic sewage was operated for three years, showing 75% reduction of overall excess sludge production. It was concluded that the new process was feasible.

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