Performances of coffee husk biochar addition in a lab-scale SBR system for treating low carbon/nitrogen ratio wastewater

2021 ◽  
Author(s):  
Ngoc-Thuy Vu ◽  
Thi-Ha Ngo ◽  
Thu-Trang Nguyen ◽  
Khac-Uan Do
Keyword(s):  
Low Carbon ◽  
Coffee Husk ◽  
Carbon Nitrogen Ratio ◽  
Nitrogen Ratio

scholarly journals The contributions and mechanisms of iron-microbes-biochar in constructed wetlands for nitrate removal from low carbon/nitrogen ratio wastewater

RSC Advances ◽  
2020 ◽  
Vol 10 (39) ◽  
pp. 23212-23220
Author(s):  
Jian Xu ◽  
Xiawei Liu ◽  
Jiaolong Huang ◽  
Manqi Huang ◽  
Tao Wang ◽  
...  
Keyword(s):  
Constructed Wetlands ◽  
Nitrate Removal ◽  
Schematic Diagram ◽  
Low Carbon ◽  
Carbon Nitrogen Ratio ◽  
Nitrogen Ratio

Schematic diagram of RDCWs system and proposed mechanisms for nitrate removal.

An iron-carbon-activated carbon and zeolite composite filter, anaerobic-aerobic integrated denitrification device for nitrogen removal in low C/N ratio sewage

2019 ◽  
Vol 80 (2) ◽  
pp. 223-231
Author(s):  
Yixuan Xie ◽  
Ajun Wan ◽  
Xingmin Wang ◽  
Hengjie Dong ◽  
Yunpeng Wu
Keyword(s):  
Activated Carbon ◽  
Nitrogen Removal ◽  
High Efficiency ◽  
Strong Shock ◽  
Autotrophic Denitrification ◽  
Low Carbon ◽  
Carbon Nitrogen Ratio ◽  
Nitrogen Ratio ◽  
Composite Filter ◽  
Zeolite Composite

Abstract In this study, we use an anaerobic-aerobic integrated denitrification (Fe/C-ZACID) device with an iron-carbon-activated carbon and zeolite composite filter to remove nitrogen from simulated low carbon-nitrogen ratio (C/N) sewage. The impacts of dissolved oxygen (DO) level, hydraulic retention time (HRT), C/N and nitrate recirculation ratio on denitrification performance were studied. The results show that when HRT was 6 h, DO was 3 ± 0.1 mg/L, influent C/N was 3, and nitrate recirculation ratio was 100%, and removal rates of 95% for ammonia and 85% for total nitrogen (TN) were achieved. A beaker comparison test demonstrated that this synergistic denitrification system included heterotrophic denitrification, physicochemical denitrification, iron autotrophic denitrification and hydrogen autotrophic denitrification, etc. The Fe/C-ZACID device has a high-efficiency nitrogen removal effect for low C/N ratio sewage and strong shock resistance, which provides technical support and a theoretical basis for advanced denitrification of rural domestic sewage.

Aerobic Denitrification Characteristics Research of Pseudomonas Strains HFX08

2012 ◽  
Vol 253-255 ◽  
pp. 903-907
Author(s):  
Xiu Lan Ma ◽  
Yu Xun Shan ◽  
Fang Yuan Zhang ◽  
Ji Hong Wang
Keyword(s):  
Sodium Acetate ◽  
Potassium Nitrate ◽  
Nitrifying Bacteria ◽  
Aerobic Denitrification ◽  
Low Carbon ◽  
Optimum Growth Temperature ◽  
Carbon Nitrogen Ratio ◽  
Nitrogen Ratio ◽  
Northern City ◽  
Growth Temperature Range

In this report, a strains of nitrifying bacteria HFX08 with low temperature and low carbon nitrogen ratio is separated from the activated sludge which is domesticated of the northern city sewage plant in winter. The optimum carbon source for the growth of the strain is sodium acetate, the source of nitrogen is potassium nitrate and the optimum growth temperature range is 10-20°C correspondingly.

scholarly journals An aerobic granular sludge process for treating low carbon/nitrogen ratio sewage

2018 ◽  
Vol 24 (2) ◽  
pp. 238-245 ◽  
Author(s):  
JaeBin Yae ◽  
JaeHoon Ryu ◽  
Nguyen Van Tuyen ◽  
HyunGu Kim ◽  
SeongWan Hong ◽  
...  
Keyword(s):  
Granular Sludge ◽  
Aerobic Granular Sludge ◽  
Low Carbon ◽  
Carbon Nitrogen Ratio ◽  
Nitrogen Ratio

scholarly journals Evaluation of the fertilizer and contamination potential of different broiler litter types subjected to various use cycles

2015 ◽  
Vol 68 (2) ◽  
pp. 7637-7646 ◽  
Author(s):  
Olga Lucía Zapata Marín ◽  
Ilda De Fátima Ferreira Tinôco ◽  
Jairo Alexander Osorio Saraz ◽  
Cecilia De Fátima Souza ◽  
María De Fatima Araujo Vieira
Keyword(s):  
Present Experiment ◽  
Ammonia Emission ◽  
Broiler Litter ◽  
Coffee Husk ◽  
Wood Shavings ◽  
Wood Shaving ◽  
Carbon Nitrogen Ratio ◽  
Nitrogen Ratio

The aim of this study was to evaluate two types of poultry bedding litter (wood shavings and coffee husks) with increasing use cycles, the best time to proceed with composting based on the carbon/nitrogen ratio and the ability to generate ammonia. The results obtained with the present experiment conditions indicated that the litter with wood shavings in the first cycle and the litter with coffee husks in the first and second cycles presented the best behavior in terms of the C/N ratio needed for later use as compost. In regards to the contamination potential, it was found that increasing the number of reutilizations for both the wood-shaving and coffee-husk litters resulted in a greater ammonia emission.

Industrial composting of low carbon/nitrogen ratio mixtures of agri-food waste and impact on compost quality

2020 ◽  
Vol 316 ◽  
pp. 123946 ◽  
Author(s):  
Ana B. Siles-Castellano ◽  
María J. López ◽  
Macarena M. Jurado ◽  
Francisca Suárez-Estrella ◽  
Juan A. López-González ◽  
...  
Keyword(s):  
Food Waste ◽  
Low Carbon ◽  
Compost Quality ◽  
Carbon Nitrogen Ratio ◽  
Nitrogen Ratio ◽  
Industrial Composting
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