Packed-bed biofilm photobioreactor combined with ultrafiltration membrane was investigated for intensifying the process for secondary wastewater effluent treatment. Cylindrical glass carriers were used as supporting material for the microalgal-bacterial biofilm, which developed from indigenous microbial consortium. Glass carriers allowed adequate growth of the biofilm with limited suspended biomass. Stable operation was achieved after a start-up period of 1000 h, where supernatant biopolymer clusters were minimized and complete nitrification was observed. After that time, biomass productivity was 54 ± 18 mg·L·day. Green microalgae Tetradesmus obliquus and several strains of heterotrophic nitrification-aerobic denitrification bacteria and fungi were identified. Combined process exhibited COD, nitrogen and phosphorus removal rates of 56 ± 5%, 12 ± 2% and 20 ± 6%, respectively. Membrane fouling was mainly caused by biofilm formation, which was not effectively mitigated by air-scouring aided backwashing.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10239383 | PMC |
| http://dx.doi.org/10.1007/s11356-023-27309-2 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Application of central composite design for commercial laundry wastewater treatment by packed bed electrocoagulation using sacrificial iron electrodes.
Chemosphere
November 2024
BOSK-Bioproducts, 100-399 rue jacquard, Quebec, QC, G1N4J6, Canada; Research Centre for Eco-Environmental Engineering, Dongguan University of Technology, China.
This research paper deals with a novel method utilizing packed bed electrocoagulation (PBEC) comprising of sacrificial iron electrodes and coupled with extracellular polymeric substances (EPS) used as flocculent agents for the treatment of commercial laundry wastewater (LWW). The study employs stainless steel cathodes, graphite anodes, and scrap iron pieces as sacrificial electrodes, ensuring efficient treatment in dynamic batch mode operation with enhanced contact time facilitated by serpentine flow. The initial characteristics of LWW were COD 579 ± 30 mg/L, TSS of 60 ± 10 mg/L, TS of 622 ± 20 mg/L, turbidity of 110 ± 5 NTU, pH of 9 ± 0.
View Article and Find Full Text PDFCorrigendum to "Response of sulfur-metabolizing biofilm to external sulfide in element sulfur-based denitrification packed-bed reactor" [Environ. Res. 231 (2023) 116061].
Environ Res
December 2024
Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China; State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China; State Key Laboratory of Urban Water Resources and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, PR China. Electronic address:
Hybrid packed bed bioreactor using combined biodegradation and ozonation to enhance nitrogen and micropollutants removal from landfill leachate.
Bioresour Technol
November 2024
LIWET, Laboratory for Industrial Water and EcoTechnology, Faculty of Bioscience Engineering, Ghent University, Campus Kortrijk, Sint-Martens- Latemlaan 2B, B-8500 Kortrijk, Belgium.
Article Synopsis
- Landfill leachate, the liquid that comes from garbage, has harmful substances like ammonium and micropollutants (tiny pollutants).
- Researchers created a special system called an expanded clay aggregates packed biofilm column (EBC) that helps break down these harmful substances using a combination of natural processes and ozone treatment.
- After just over two months, they found that this method was super effective, achieving 85% nitrogen removal and completely getting rid of a specific micropollutant called carbamazepine.
Performance of a pilot-scale microbial electrolysis cell coupled with biofilm-based reactor for household wastewater treatment: simultaneous pollutant removal and hydrogen production.
Bioprocess Biosyst Eng
November 2024
Consejo Nacional de Humanidades, Ciencias y Tecnologías, Instituto Mexicano de Tecnología del Agua, Paseo Cuauhnáhuac 8532, Progreso, Jiutepec, Morelos, C.P. 62550, México.
The septic tank is the most commonly used decentralized wastewater treatment systems for household wastewater treatment in on-site applications. The removal rate of various pollutants is lower in different septic tank configurations. The integration of a microbial electrolysis cells (MEC) into septic tank or biofilm-based reactors can be a green and sustainable technology for household wastewater treatment and energy production.
View Article and Find Full Text PDFWater flush boosts performance of elemental sulfur-based denitrification packed-bed systems: Optimization and mechanisms.
Bioresour Technol
September 2024
State Key Laboratory of Urban Water Resources and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, China. Electronic address:
Article Synopsis
- ESDeN packed-bed systems show promise for denitrification but face challenges like biofilm growth and gas trapping, affecting performance.
- Water flush (WF) techniques can enhance denitrification rates, but their effects were not thoroughly studied until now.
- Results indicate that strategically controlling WF can significantly improve denitrification rates, with high-frequency and high-intensity flushing showing the best performance by optimizing retention time and reducing biofilm thickness.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!