Synthesis and performance of iron oxide-based porous ceramsite in a biological aerated filter for the simultaneous removal of nitrogen and phosphorus from domestic wastewater

2016 ◽  
Vol 167 ◽  
pp. 154-162 ◽  
Author(s):  
Teng Bao ◽  
Tianhu Chen ◽  
Juan Tan ◽  
Marie-Luise Wille ◽  
Dan Zhu ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Domestic Wastewater ◽  
Simultaneous Removal ◽  
Biological Aerated Filter ◽  
Nitrogen And Phosphorus ◽  
And Performance ◽  
Aerated Filter

Performance and characterization of a non-sintered zeolite porous filter for the simultaneous removal of nitrogen and phosphorus in a biological aerated filter (BAF)

RSC Advances ◽  
2016 ◽  
Vol 6 (55) ◽  
pp. 50217-50227 ◽  
Author(s):  
Teng Bao ◽  
Tianhu Chen ◽  
Marie-Luise Wille ◽  
Dong Chen ◽  
Wentao Wu ◽  
...  
Keyword(s):  
Simultaneous Removal ◽  
Biological Aerated Filter ◽  
Nitrogen And Phosphorus ◽  
Porous Filter ◽  
Aerated Filter

A novel non-sintered zeolite porous filter (ZPF) and commercially available ceramsite (CAC) are used to investigate the simultaneous removal of nitrogen and phosphorus from city wastewater treated by biological aerated filter (BAF) reactors.

Simultaneous nutrients and carbon removal from low-strength domestic wastewater with an immobilised-microorganism biological aerated filter

2011 ◽  
Vol 63 (5) ◽  
pp. 885-890 ◽  
Author(s):  
Q. Chen ◽  
L. Qu ◽  
G. Tong ◽  
J. Ni
Keyword(s):  
Phosphorus Removal ◽  
Domestic Wastewater ◽  
Cost Effective ◽  
Biological Aerated Filter ◽  
Intermittent Aeration ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
Domestic Wastewater Treatment ◽  
Low Strength ◽  
Aerated Filter

To improve the efficiency of low-strength domestic wastewater treatment, an immobilised-microorganism biological aerated filter (I-BAF) was established for simultaneous carbon, nitrogen and phosphorus removal. The I-BAF performance was systematically evaluated under continuous and intermittent aeration modes. At the optimal condition with an intermittent aeration control schedule of 2 h on/1 h off, the maximum removal rates of COD, NH4+-N, TN and P were 82.54%, 94.83%, 51.85% and 61.49%, respectively, and the corresponding averaged effluents could meet the first class standards of China. Further analysis of PCR-DGGE profile revealed that members of the gamma and alpha proteobacterium bacterial groups were probably responsible for the nitrogen and phosphorus removal. The I-BAF system showed excellent performance in carbon and nutrients removal, which provided a cost-effective solution for the treatment of low-strength domestic wastewater.

Recent advances on the treatment of domestic wastewater by biological aerated filter

2022 ◽  
pp. 155-170
Author(s):  
Hui Xu ◽  
Bo Yang ◽  
Yanbiao Liu ◽  
Xinshan Song ◽  
Wolfgang Sand
Keyword(s):  
Domestic Wastewater ◽  
Biological Aerated Filter ◽  
Recent Advances ◽  
Aerated Filter

Membrane fouling and performance evaluation of conventional membrane bioreactor (MBR), moving biofilm MBR and oxic/anoxic MBR

2014 ◽  
Vol 69 (7) ◽  
pp. 1403-1409 ◽  
Author(s):  
Sher Jamal Khan ◽  
Aman Ahmad ◽  
Muhammad Saqib Nawaz ◽  
Nicholas P. Hankins
Keyword(s):  
Membrane Fouling ◽  
Extracellular Polymeric Substances ◽  
Water Flux ◽  
Oxygen Demand ◽  
Domestic Wastewater ◽  
Membrane Bioreactors ◽  
Nitrogen And Phosphorus ◽  
Biofilm Carrier ◽  
Cake Layer ◽  
And Performance

In this study, three laboratory scale submerged membrane bioreactors (MBRs) comprising a conventional MBR (C-MBR), moving bed MBR (MB-MBR) and anoxic-oxic MBR (A/O-MBR) were continuously operated with synthesized domestic wastewater (chemical oxygen demand, COD = 500 mg/L) for 150 days under similar operational and environmental conditions. Kaldnes® plastic media with 20% dry volume was used as a biofilm carrier in the MB-MBR and A/O-MBR. The treatment performance and fouling propensity of the MBRs were evaluated. The effect of cake layer formation in all three MBRs was almost the same. However, pore blocking caused a major difference in the resultant water flux. The A/O-MBR showed the highest total nitrogen and phosphorus (PO4-P) removal efficiencies of 83.2 and 69.7%, respectively. Due to the high removal of nitrogen, fewer protein contents were found in the soluble and bound extracellular polymeric substances (EPS) of the A/O-MBR. Fouling trends of the MBRs showed 12, 14 and 20 days filtration cycles for C-MBR, MB-MBR and A/O-MBR, respectively. A 25% reduction of the soluble EPS and a 37% reduction of the bound EPS concentrations in A/O-MBR compared with C-MBR was a major contributing factor for fouling retardation and the enhanced filtration capacity of the A/O-MBR.

Phosphorus Removal in Biological Aerated Filters by Chemically Enhanced

2011 ◽  
Vol 243-249 ◽  
pp. 4821-4826 ◽  
Author(s):  
Ying Ying Ma ◽  
Xin Li ◽  
Wen Yi Dong
Keyword(s):  
Ferric Chloride ◽  
Aluminum Chloride ◽  
Phosphorus Removal ◽  
Removal Rate ◽  
Domestic Wastewater ◽  
Metal Salts ◽  
Biological Aerated Filter ◽  
Mass Ratio ◽  
Aeration Intensity ◽  
Aerated Filter

Phosphorus removal by biological aerated filter(BAF) is ineffective, its effluent TP is much more than 0.5mg/L, so chemically enhanced phosphorus removal is neccessary. To solve this problem, domestic wastewater through BAF by adding metal salts in the aerobic tank was studied. The ferric chloride and aluminum chloride were chosen as the metal salts. The results showed that: the removal rate of TP rose with the Me/P (Me=Fe, Al)mass ratio increased, the influence on other performance of BAF by chemically enhanced synchronously was not severe, with TP in the effluent below the standard of 0.5mg/L; to ensure the concentration of effluent TP was less than 0.5mg/L, the optimum mass ratios of dosing were Fe/P=3, Al/P=2.5; proper aeration intensity could maintain the proper micro-flocculation state in BAF, which was helpful to TP removal.

Start-Up Characteristics of Biological Aerated Filter with Composite Steel Slag Media for Nitrogen and Phosphorus Removal

2014 ◽  
Vol 675-677 ◽  
pp. 939-942 ◽  
Author(s):  
Zhi Liu ◽  
Li Ping Qiu ◽  
Li Xin Zhang
Keyword(s):  
Phosphorus Removal ◽  
Steel Slag ◽  
Future Application ◽  
Biological Aerated Filter ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
Start Up ◽  
Aerated Filter ◽  
Biofilm Development ◽  
Composite Steel

The treatment performance and biofilm development of the start-up stage in an up-flow Biological Aerated Filter (BAF) with composite steel slag media is investigated, while the operating conditions is HRT 2h, temperature 23-27°C, DO 3-5mg/L. The results showed that the composite steel slag media BAF could be secussfuly operated in a short time, while the phosphorus could be removed 90% in 8 days as well as the ammonia nitrogen and COD could be removed 80% in 25 days after the beginning of reactor start-up. At the same time, the biofilm on the carrier could be observed and a lot of protozoa population, such as Rotifera, Vorticellidae and Parameciidae, could be characteristiced with optical microscope in the BAF system. It is conclued that the operation of the composite steel slag media BAF for nitrogen and phosphorus removal could be carried out quickly and conveniently, and provided a unique advantage for the future application.

Biological phosphorus and nitrogen removal with biological aerated filter using denitrifying phosphorus accumulating organism

2005 ◽  
Vol 52 (10-11) ◽  
pp. 569-578 ◽  
Author(s):  
J. Lee ◽  
J. Kim ◽  
C. Lee ◽  
Z. Yun ◽  
E. Choi
Keyword(s):  
P Uptake ◽  
Biological Nutrient Removal ◽  
Biological Aerated Filter ◽  
Biological Phosphorus Removal ◽  
Nitrogen And Phosphorus ◽  
Suspended Growth ◽  
Oxic Zone ◽  
Aerated Filter ◽  
Biological Phosphorus ◽  
P Removal

In order to accomplish the biological nutrient removal with a weak sewage at low temperature, a hybrid process consisted of anoxic denitrifying phosphorus accumulating organism (dPAO) and nitrifying biological aerated filter (BAF) was studied in both lab and field pilot plants with weak sewage. The biofilm BAF was used as a post-nitrification process that provided sufficient nitrate to suspended growth dPAO. The anoxic/BAF configuration could remove nitrogen and phosphorus appreciably compared to other BNR systems. The enhanced biological phosphorus removal (EBPR) was mainly occurred in anoxic zone of suspended growth reactor. It has been found that P removal efficiency of dPAO was enhanced with an addition of a short oxic zone in suspended reactors compared to that of without oxic zone. However, the degree of aerobic P uptake in oxic zone was far lower than anoxic P uptake. The operating results of field plant indicated that dPAO/BAF configuration successfully reduced the adverse temperature effects at lower than 15°C.

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